* [U-Boot] [PATCH 1/3] Monahan/PXA3xx: integrate Linux NAND controller driver
2009-12-24 3:29 [U-Boot] [PATCH 0/3] Monahan/PXA3xx: integrate Linux NAND controller driver Marcel Ziswiler
@ 2009-12-24 3:33 ` Marcel Ziswiler
2010-01-07 19:44 ` Scott Wood
2009-12-24 3:36 ` [U-Boot] [PATCH 2/3] delta: use new generic " Marcel Ziswiler
2009-12-24 3:38 ` [U-Boot] [PATCH 3/3] zylonite: " Marcel Ziswiler
2 siblings, 1 reply; 7+ messages in thread
From: Marcel Ziswiler @ 2009-12-24 3:33 UTC (permalink / raw)
To: u-boot
This patch integrates the PXA3xx Linux NAND controller driver.
Signed-off-by: Marcel Ziswiler <marcel.ziswiler@noser.com>
---
drivers/mtd/nand/Makefile | 1 +
drivers/mtd/nand/pxa3xx_nand.c | 1860 ++++++++++++++++++++++++++++++++
include/asm-arm/arch-pxa/pxa-regs.h | 95 +--
include/asm-arm/arch-pxa/pxa3xx_nand.h | 67 ++
4 files changed, 1931 insertions(+), 92 deletions(-)
create mode 100644 drivers/mtd/nand/pxa3xx_nand.c
create mode 100644 include/asm-arm/arch-pxa/pxa3xx_nand.h
diff --git a/drivers/mtd/nand/Makefile b/drivers/mtd/nand/Makefile
index 02449ee..63568ee 100644
--- a/drivers/mtd/nand/Makefile
+++ b/drivers/mtd/nand/Makefile
@@ -49,6 +49,7 @@ COBJS-$(CONFIG_NAND_S3C2410) += s3c2410_nand.o
COBJS-$(CONFIG_NAND_S3C64XX) += s3c64xx.o
COBJS-$(CONFIG_NAND_OMAP_GPMC) += omap_gpmc.o
COBJS-$(CONFIG_NAND_PLAT) += nand_plat.o
+COBJS-$(CONFIG_NAND_PXA3xx) += pxa3xx_nand.o
endif
COBJS := $(COBJS-y)
diff --git a/drivers/mtd/nand/pxa3xx_nand.c b/drivers/mtd/nand/pxa3xx_nand.c
new file mode 100644
index 0000000..03709f7
--- /dev/null
+++ b/drivers/mtd/nand/pxa3xx_nand.c
@@ -0,0 +1,1860 @@
+/*
+ * drivers/mtd/nand/pxa3xx_nand.c
+ *
+ * Copyright ? 2005 Intel Corporation
+ * Copyright ? 2006 Marvell International Ltd.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+/* XXX U-BOOT XXX */
+#define __U_BOOT__
+
+#ifndef __U_BOOT__
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/interrupt.h>
+#include <linux/platform_device.h>
+#include <linux/dma-mapping.h>
+#include <linux/delay.h>
+#include <linux/clk.h>
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/nand.h>
+#include <linux/mtd/partitions.h>
+#include <linux/io.h>
+#include <linux/irq.h>
+
+#include <mach/dma.h>
+#include <plat/pxa3xx_nand.h>
+#else /* __U_BOOT__ */
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/nand.h>
+
+#include <asm/arch/pxa-regs.h>
+#include <asm/arch/pxa3xx_nand.h>
+
+#include <common.h>
+#include <asm/errno.h>
+#include <asm/io.h>
+
+#ifdef CONFIG_NAND_SPL
+#define printf(fmt, args...)
+#endif /* CONFIG_NAND_SPL */
+
+#undef DEBUG
+#ifdef DEBUG
+#define DEBUGF(fmt, args...) printf(fmt, ##args)
+#else /* DEBUG */
+#define DEBUGF(x...)
+#endif /* DEBUG */
+
+#define CONFIG_MTD_NAND_PXA3xx_BUILTIN
+#define CONFIG_MTD_NAND_PXA3xx_POLLING
+
+static unsigned char static_data_buff[2112];
+static struct pxa3xx_nand_info static_info;
+
+#ifdef CONFIG_NAND_SPL
+/**
+ * memset - Fill a region of memory with the given value
+ * @s: Pointer to the start of the area.
+ * @c: The byte to fill the area with
+ * @count: The size of the area.
+ *
+ * Do not use memset() to access IO space, use memset_io() instead.
+ */
+void *memset(void *s, int c, size_t count)
+{
+ char *xs = (char *) s;
+
+ while (count--)
+ *xs++ = c;
+
+ return s;
+}
+
+/**
+ * memcpy - Copy one area of memory to another
+ * @dest: Where to copy to
+ * @src: Where to copy from
+ * @count: The size of the area.
+ *
+ * You should not use this function to access IO space, use memcpy_toio()
+ * or memcpy_fromio() instead.
+ */
+void *memcpy(void *dest, const void *src, size_t count)
+{
+ char *tmp = (char *) dest, *s = (char *) src;
+
+ while (count--)
+ *tmp++ = *s++;
+
+ return dest;
+}
+#endif /* CONFIG_NAND_SPL */
+
+void msleep(int count)
+{
+ int i;
+
+ for (i = 0; i < count; i++)
+ udelay(1000);
+}
+#endif /* __U_BOOT__ */
+
+#ifndef CONFIG_MTD_NAND_PXA3xx_POLLING
+#define CHIP_DELAY_TIMEOUT (2 * HZ/10)
+#endif /* CONFIG_MTD_NAND_PXA3xx_POLLING */
+
+/* registers and bit definitions */
+#define NDCR (0x00) /* Control register */
+#define NDTR0CS0 (0x04) /* Timing Parameter 0 for CS0 */
+#define NDTR1CS0 (0x0C) /* Timing Parameter 1 for CS0 */
+#define NDSR (0x14) /* Status Register */
+#define NDPCR (0x18) /* Page Count Register */
+#define NDBDR0 (0x1C) /* Bad Block Register 0 */
+#define NDBDR1 (0x20) /* Bad Block Register 1 */
+#define NDDB (0x40) /* Data Buffer */
+#define NDCB0 (0x48) /* Command Buffer0 */
+#define NDCB1 (0x4C) /* Command Buffer1 */
+#define NDCB2 (0x50) /* Command Buffer2 */
+
+#define NDCR_SPARE_EN (0x1 << 31)
+#define NDCR_ECC_EN (0x1 << 30)
+#define NDCR_DMA_EN (0x1 << 29)
+#define NDCR_ND_RUN (0x1 << 28)
+#define NDCR_DWIDTH_C (0x1 << 27)
+#define NDCR_DWIDTH_M (0x1 << 26)
+#define NDCR_PAGE_SZ (0x1 << 24)
+#define NDCR_NCSX (0x1 << 23)
+#define NDCR_ND_MODE (0x3 << 21)
+#define NDCR_NAND_MODE (0x0)
+#define NDCR_CLR_PG_CNT (0x1 << 20)
+#define NDCR_CLR_ECC (0x1 << 19)
+#define NDCR_RD_ID_CNT_MASK (0x7 << 16)
+#define NDCR_RD_ID_CNT(x) (((x) << 16) & NDCR_RD_ID_CNT_MASK)
+
+#define NDCR_RA_START (0x1 << 15)
+#define NDCR_PG_PER_BLK (0x1 << 14)
+#define NDCR_ND_ARB_EN (0x1 << 12)
+
+#define NDSR_MASK (0xfff)
+#define NDSR_RDY (0x1 << 11)
+#define NDSR_CS0_PAGED (0x1 << 10)
+#define NDSR_CS1_PAGED (0x1 << 9)
+#define NDSR_CS0_CMDD (0x1 << 8)
+#define NDSR_CS1_CMDD (0x1 << 7)
+#define NDSR_CS0_BBD (0x1 << 6)
+#define NDSR_CS1_BBD (0x1 << 5)
+#define NDSR_DBERR (0x1 << 4)
+#define NDSR_SBERR (0x1 << 3)
+#define NDSR_WRDREQ (0x1 << 2)
+#define NDSR_RDDREQ (0x1 << 1)
+#define NDSR_WRCMDREQ (0x1)
+
+#define NDCB0_AUTO_RS (0x1 << 25)
+#define NDCB0_CSEL (0x1 << 24)
+#define NDCB0_CMD_TYPE_MASK (0x7 << 21)
+#define NDCB0_CMD_TYPE(x) (((x) << 21) & NDCB0_CMD_TYPE_MASK)
+#define NDCB0_NC (0x1 << 20)
+#define NDCB0_DBC (0x1 << 19)
+#define NDCB0_ADDR_CYC_MASK (0x7 << 16)
+#define NDCB0_ADDR_CYC(x) (((x) << 16) & NDCB0_ADDR_CYC_MASK)
+#define NDCB0_CMD2_MASK (0xff << 8)
+#define NDCB0_CMD1_MASK (0xff)
+#define NDCB0_ADDR_CYC_SHIFT (16)
+
+/* macros for registers read/write */
+#ifdef __U_BOOT__
+#define nand_writel(info, off, val) \
+ ((*(volatile u32 *) ((info)->mmio_base + (off))) = (val))
+
+static void nand_writesl(volatile u32 *dest, u8 *src, int size)
+{
+ int i;
+ u32 *source = (u32 *)src;
+
+ for (i = 0; i < size; i++)
+ *dest = *(source++);
+}
+
+#define nand_readl(info, off) \
+ (*(volatile u32 *)((info)->mmio_base + (off)))
+
+static void nand_readsl(volatile u32 *source, u8 *dst, int size)
+{
+ u32 *dest = (u32 *)dst;
+ int i;
+
+ for (i = 0; i < size; i++)
+ *(dest++) = *source;
+}
+#else /* __U_BOOT__ */
+#define nand_writel(info, off, val) \
+ __raw_writel((val), (info)->mmio_base + (off))
+
+#define nand_readl(info, off) \
+ __raw_readl((info)->mmio_base + (off))
+#endif /* __U_BOOT__ */
+
+/* error code and state */
+enum {
+ ERR_NONE = 0,
+ ERR_DMABUSERR = -1,
+ ERR_SENDCMD = -2,
+ ERR_DBERR = -3,
+ ERR_BBERR = -4,
+ ERR_SBERR = -5,
+};
+
+enum {
+ STATE_READY = 0,
+ STATE_CMD_HANDLE,
+ STATE_DMA_READING,
+ STATE_DMA_WRITING,
+ STATE_DMA_DONE,
+ STATE_PIO_READING,
+ STATE_PIO_WRITING,
+};
+
+struct pxa3xx_nand_info {
+ struct platform_device *pdev;
+ const struct pxa3xx_nand_flash *flash_info;
+
+ struct clk *clk;
+ void __iomem *mmio_base;
+#ifndef CONFIG_MTD_NAND_PXA3xx_POLLING
+ unsigned long mmio_phys;
+#endif /* CONFIG_MTD_NAND_PXA3xx_POLLING */
+
+ unsigned int buf_start;
+ unsigned int buf_count;
+
+ /* DMA information */
+ int drcmr_dat;
+ int drcmr_cmd;
+
+ unsigned char *data_buff;
+ dma_addr_t data_buff_phys;
+ size_t data_buff_size;
+ int data_dma_ch;
+ struct pxa_dma_desc *data_desc;
+ dma_addr_t data_desc_addr;
+
+ uint32_t reg_ndcr;
+
+ /* saved column/page_addr during CMD_SEQIN */
+ int seqin_column;
+ int seqin_page_addr;
+
+ /* relate to the command */
+ unsigned int state;
+
+ int use_ecc; /* use HW ECC ? */
+ int use_dma; /* use DMA ? */
+
+ size_t data_size; /* data size in FIFO */
+ int retcode;
+#ifndef CONFIG_MTD_NAND_PXA3xx_POLLING
+ struct completion cmd_complete;
+#endif /* CONFIG_MTD_NAND_PXA3xx_POLLING */
+
+ /* generated NDCBx register values */
+ uint32_t ndcb0;
+ uint32_t ndcb1;
+ uint32_t ndcb2;
+
+ /* calculated from pxa3xx_nand_flash data */
+ size_t oob_size;
+ size_t read_id_bytes;
+
+ unsigned int col_addr_cycles;
+ unsigned int row_addr_cycles;
+};
+
+#ifdef CONFIG_MTD_NAND_PXA3xx_POLLING
+static int use_dma = 0;
+#else /* CONFIG_MTD_NAND_PXA3xx_POLLING */
+static int use_dma = 1;
+#endif /* CONFIG_MTD_NAND_PXA3xx_POLLING */
+#ifndef __U_BOOT__
+module_param(use_dma, bool, 0444);
+MODULE_PARM_DESC(use_dma, "enable DMA for data transfering to/from NAND HW");
+
+/*
+ * Default NAND flash controller configuration setup by the
+ * bootloader. This configuration is used only when pdata->keep_config is set
+ */
+static struct pxa3xx_nand_timing default_timing;
+static struct pxa3xx_nand_flash default_flash;
+#endif /* __U_BOOT__ */
+
+/* small page NAND command codes (2nd cycle, 1st cycle) */
+static struct pxa3xx_nand_cmdset smallpage_cmdset = {
+ .read1 = 0x0000, /* Read */
+ .read2 = 0x0050, /* Read2 unused, current DFC doesn't
+ support */
+ .program = 0x1080, /* Write, two cycle command */
+ .read_status = 0x0070, /* Read status */
+ .read_id = 0x0090, /* Read ID */
+ .erase = 0xD060, /* Block erase, two cycle command */
+ .reset = 0x00FF, /* Reset */
+ .lock = 0x002A, /* Lock whole flash */
+ .unlock = 0x2423, /* Unlock block range */
+ .lock_status = 0x007A, /* Read block lock status */
+};
+
+/* large page NAND command codes (2nd cycle, 1st cycle) */
+static struct pxa3xx_nand_cmdset largepage_cmdset = {
+ .read1 = 0x3000, /* Read */
+ .read2 = 0x0050, /* Read2 unused, current DFC doesn't
+ support */
+ .program = 0x1080, /* Write, two cycle command */
+ .read_status = 0x0070, /* Read status */
+ .read_id = 0x0090, /* Read ID */
+ .erase = 0xD060, /* Block erase, two cycle command */
+ .reset = 0x00FF, /* Reset */
+ .lock = 0x002A, /* Lock whole flash */
+ .unlock = 0x2423, /* Unlock block range */
+ .lock_status = 0x007A, /* Read block lock status */
+};
+
+#ifdef CONFIG_MTD_NAND_PXA3xx_BUILTIN
+/* Samsung K9K8G08U0A and K9K8G08U0B on Toradex Colibri XScale PXA320 V1.2d,
+ V1.2e, Colibri XScale PXA320 IT V1.2b, Limestone PDA V1.2b and V2.0c */
+static struct pxa3xx_nand_timing samsung8GbX8_timing = {
+ .tCH = 5, /* tCH, Enable signal hold time */
+ .tCS = 20, /* tCS, Enable signal setup time */
+ .tWH = 10, /* tWH, ND_nWE high duration */
+ .tWP = 12, /* tWP, ND_nWE pulse time */
+ .tRH = 100, /* tRHZ, ND_nRE high duration */
+ .tRP = 12, /* tRP, ND_nRE pulse width */
+ .tR = 20000, /* tR, ND_nWE high to ND_nRE low for read */
+ .tWHR = 60, /* tWHR, ND_nWE high to ND_nRE low delay for
+ status read */
+ .tAR = 10, /* tAR, ND_ALE low to ND_nRE low delay */
+};
+
+static struct pxa3xx_nand_flash samsung8GbX8 = {
+ .timing = &samsung8GbX8_timing,
+ .cmdset = &largepage_cmdset,
+ .page_per_block = 64, /* Pages per block */
+ .page_size = 2048, /* Page size in bytes */
+ .flash_width = 8, /* Width of Flash memory */
+ .dfc_width = 8, /* Width of flash controller */
+ .num_blocks = 8192, /* Number of physical blocks in
+ Flash */
+ .chip_id = 0xd3ec, /* chip ID, vendor ID */
+};
+
+/* Samsung K9F4G08U0A on Toradex Colibri XScale PXA310 V1.2a and V1.3a */
+static struct pxa3xx_nand_timing samsung4GbX8_timing = {
+ .tCH = 5, /* tCH, Enable signal hold time */
+ .tCS = 20, /* tCS, Enable signal setup time */
+ .tWH = 10, /* tWH, ND_nWE high duration */
+ .tWP = 12, /* tWP, ND_nWE pulse time */
+ .tRH = 100, /* tRHZ, ND_nRE high duration */
+ .tRP = 12, /* tRP, ND_nRE pulse width */
+ .tR = 25000, /* tR, ND_nWE high to ND_nRE low for read */
+ .tWHR = 60, /* tWHR, ND_nWE high to ND_nRE low delay for
+ status read */
+ .tAR = 10, /* tAR, ND_ALE low to ND_nRE low delay */
+};
+
+static struct pxa3xx_nand_flash samsung4GbX8 = {
+ .timing = &samsung4GbX8_timing,
+ .cmdset = &largepage_cmdset,
+ .page_per_block = 64, /* Pages per block */
+ .page_size = 2048, /* Page size in bytes */
+ .flash_width = 8, /* Width of Flash memory */
+ .dfc_width = 8, /* Width of flash controller */
+ .num_blocks = 4096, /* Number of physical blocks in
+ Flash */
+ .chip_id = 0xdcec, /* chip ID, vendor ID */
+};
+
+/* Samsung K9F1G08U0A on Toradex Colibri XScale PXA300 V1.1a and V1.1b */
+static struct pxa3xx_nand_timing samsung1GbX8_timing = {
+ .tCH = 5, /* tCH, Enable signal hold time */
+ .tCS = 20, /* tCS, Enable signal setup time */
+ .tWH = 10, /* tWH, ND_nWE high duration */
+ .tWP = 15, /* tWP, ND_nWE pulse time */
+ .tRH = 30, /* tRHZ, ND_nRE high duration */
+ .tRP = 15, /* tRP, ND_nRE pulse width */
+ .tR = 25000, /* tR, ND_nWE high to ND_nRE low for read */
+ .tWHR = 60, /* tWHR, ND_nWE high to ND_nRE low delay for
+ status read */
+ .tAR = 10, /* tAR, ND_ALE low to ND_nRE low delay */
+};
+
+static struct pxa3xx_nand_flash samsung1GbX8 = {
+ .timing = &samsung1GbX8_timing,
+ .cmdset = &largepage_cmdset,
+ .page_per_block = 64,
+ .page_size = 2048,
+ .flash_width = 8,
+ .dfc_width = 8,
+ .num_blocks = 1024,
+ .chip_id = 0xf1ec,
+};
+
+/* Hynix HY27UG088G5M on Toradex Colibri XScale PXA320 V1.2b and V1.2c */
+static struct pxa3xx_nand_timing hynix_timing = {
+ .tCH = 5, /* tCH, Enable signal hold time */
+ .tCS = 25, /* tCS, Enable signal setup time */
+ .tWH = 10, /* tWH, ND_nWE high duration */
+ .tWP = 15, /* tWP, ND_nWE pulse time */
+ .tRH = 10, /* tREH, ND_nRE high duration */
+ .tRP = 15, /* tRP, ND_nRE pulse width */
+ .tR = 25000, /* tR, ND_nWE high to ND_nRE low for read */
+ .tWHR = 60, /* tWHR, ND_nWE high to ND_nRE low delay */
+ .tAR = 15, /* tAR, ND_ALE low to ND_nRE low delay */
+};
+
+static struct pxa3xx_nand_flash hynix8GbX8 = {
+ .timing = &hynix_timing,
+ .cmdset = &largepage_cmdset,
+ .page_per_block = 64, /* Pages per block */
+ .page_size = 2048, /* Page size in bytes */
+ .flash_width = 8, /* Width of Flash memory */
+ .dfc_width = 8, /* Width of flash controller */
+ .num_blocks = 8192, /* Number of physical blocks in
+ Flash */
+ .chip_id = 0xdcad, /* chip ID, vendor ID */
+};
+
+/* Samsung K9F1208U0B on Toradex Colibri XScale PXA290 V1.0a, V1.0c and
+ V1.0d */
+static struct pxa3xx_nand_timing samsung512MbX8_timing = {
+ .tCH = 10, /* tCH, Enable signal hold time */
+ .tCS = 10, /* tCS, Enable signal setup time */
+ .tWH = 15, /* tWH, ND_nWE high duration */
+ .tWP = 25, /* tWP, ND_nWE pulse time */
+ .tRH = 15, /* tRHZ, ND_nRE high duration */
+ .tRP = 25, /* tRP, ND_nRE pulse width */
+ .tR = 15000, /* tR, ND_nWE high to ND_nRE low for read */
+ .tWHR = 60, /* tWHR, ND_nWE high to ND_nRE low delay for
+ status read */
+ .tAR = 10, /* tAR, ND_ALE low to ND_nRE low delay */
+};
+
+static struct pxa3xx_nand_flash samsung512MbX8 = {
+ .timing = &samsung512MbX8_timing,
+ .cmdset = &smallpage_cmdset,
+ .page_per_block = 32,
+ .page_size = 512,
+ .flash_width = 8,
+ .dfc_width = 8,
+ .num_blocks = 4096,
+ .chip_id = 0x76ec,
+};
+
+/* BenQ Delta and Marvell Zylonite */
+static struct pxa3xx_nand_timing samsung512MbX16_timing = {
+ .tCH = 10,
+ .tCS = 0,
+ .tWH = 20,
+ .tWP = 40,
+ .tRH = 30,
+ .tRP = 40,
+ .tR = 11123,
+ .tWHR = 110,
+ .tAR = 10,
+};
+
+static struct pxa3xx_nand_flash samsung512MbX16 = {
+ .timing = &samsung512MbX16_timing,
+ .cmdset = &smallpage_cmdset,
+ .page_per_block = 32,
+ .page_size = 512,
+ .flash_width = 16,
+ .dfc_width = 16,
+ .num_blocks = 4096,
+ .chip_id = 0x46ec,
+};
+
+static struct pxa3xx_nand_flash samsung2GbX8 = {
+ .timing = &samsung512MbX16_timing,
+ .cmdset = &smallpage_cmdset,
+ .page_per_block = 64,
+ .page_size = 2048,
+ .flash_width = 8,
+ .dfc_width = 8,
+ .num_blocks = 2048,
+ .chip_id = 0xdaec,
+};
+
+static struct pxa3xx_nand_flash samsung32GbX8 = {
+ .timing = &samsung512MbX16_timing,
+ .cmdset = &smallpage_cmdset,
+ .page_per_block = 128,
+ .page_size = 4096,
+ .flash_width = 8,
+ .dfc_width = 8,
+ .num_blocks = 8192,
+ .chip_id = 0xd7ec,
+};
+
+static struct pxa3xx_nand_timing micron_timing = {
+ .tCH = 10,
+ .tCS = 25,
+ .tWH = 15,
+ .tWP = 25,
+ .tRH = 15,
+ .tRP = 30,
+ .tR = 25000,
+ .tWHR = 60,
+ .tAR = 10,
+};
+
+static struct pxa3xx_nand_flash micron1GbX8 = {
+ .timing = µn_timing,
+ .cmdset = &largepage_cmdset,
+ .page_per_block = 64,
+ .page_size = 2048,
+ .flash_width = 8,
+ .dfc_width = 8,
+ .num_blocks = 1024,
+ .chip_id = 0xa12c,
+};
+
+static struct pxa3xx_nand_flash micron1GbX16 = {
+ .timing = µn_timing,
+ .cmdset = &largepage_cmdset,
+ .page_per_block = 64,
+ .page_size = 2048,
+ .flash_width = 16,
+ .dfc_width = 16,
+ .num_blocks = 1024,
+ .chip_id = 0xb12c,
+};
+
+static struct pxa3xx_nand_flash micron4GbX8 = {
+ .timing = µn_timing,
+ .cmdset = &largepage_cmdset,
+ .page_per_block = 64,
+ .page_size = 2048,
+ .flash_width = 8,
+ .dfc_width = 8,
+ .num_blocks = 4096,
+ .chip_id = 0xdc2c,
+};
+
+static struct pxa3xx_nand_flash micron4GbX16 = {
+ .timing = µn_timing,
+ .cmdset = &largepage_cmdset,
+ .page_per_block = 64,
+ .page_size = 2048,
+ .flash_width = 16,
+ .dfc_width = 16,
+ .num_blocks = 4096,
+ .chip_id = 0xcc2c,
+};
+
+static struct pxa3xx_nand_timing stm2GbX16_timing = {
+ .tCH = 10,
+ .tCS = 35,
+ .tWH = 15,
+ .tWP = 25,
+ .tRH = 15,
+ .tRP = 25,
+ .tR = 25000,
+ .tWHR = 60,
+ .tAR = 10,
+};
+
+static struct pxa3xx_nand_flash stm2GbX16 = {
+ .timing = &stm2GbX16_timing,
+ .cmdset = &largepage_cmdset,
+ .page_per_block = 64,
+ .page_size = 2048,
+ .flash_width = 16,
+ .dfc_width = 16,
+ .num_blocks = 2048,
+ .chip_id = 0xba20,
+};
+
+static struct pxa3xx_nand_flash *builtin_flash_types[] = {
+ &samsung8GbX8,
+ &samsung4GbX8,
+ &samsung1GbX8,
+ &hynix8GbX8,
+ &samsung512MbX8,
+ &samsung512MbX16,
+ &samsung2GbX8,
+ &samsung32GbX8,
+ µn1GbX8,
+ µn1GbX16,
+ µn4GbX8,
+ µn4GbX16,
+ &stm2GbX16,
+};
+#endif /* CONFIG_MTD_NAND_PXA3xx_BUILTIN */
+
+#define NDTR0_tCH(c) (min((c), 7) << 19)
+#define NDTR0_tCS(c) (min((c), 7) << 16)
+#define NDTR0_tWH(c) (min((c), 7) << 11)
+#define NDTR0_tWP(c) (min((c), 7) << 8)
+#define NDTR0_tRH(c) (min((c), 7) << 3)
+#define NDTR0_tRP(c) (min((c), 7) << 0)
+
+#define NDTR1_tR(c) (min((c), 65535) << 16)
+#define NDTR1_tWHR(c) (min((c), 15) << 4)
+#define NDTR1_tAR(c) (min((c), 15) << 0)
+
+#define tCH_NDTR0(r) (((r) >> 19) & 0x7)
+#define tCS_NDTR0(r) (((r) >> 16) & 0x7)
+#define tWH_NDTR0(r) (((r) >> 11) & 0x7)
+#define tWP_NDTR0(r) (((r) >> 8) & 0x7)
+#define tRH_NDTR0(r) (((r) >> 3) & 0x7)
+#define tRP_NDTR0(r) (((r) >> 0) & 0x7)
+
+#define tR_NDTR1(r) (((r) >> 16) & 0xffff)
+#define tWHR_NDTR1(r) (((r) >> 4) & 0xf)
+#define tAR_NDTR1(r) (((r) >> 0) & 0xf)
+
+/* convert nano-seconds to nand flash controller clock cycles */
+#define ns2cycle(ns, clk) (int)(((ns) * (clk / 1000000) / 1000) + 1)
+
+/* convert nand flash controller clock cycles to nano-seconds */
+#define cycle2ns(c, clk) ((((c) + 1) * 1000000 + clk / 500) / \
+ (clk / 1000))
+
+static void pxa3xx_nand_set_timing(struct pxa3xx_nand_info *info,
+ const struct pxa3xx_nand_timing *t)
+{
+#ifndef __U_BOOT__
+ unsigned long nand_clk = clk_get_rate(info->clk);
+#else /* __U_BOOT__ */
+ unsigned long nand_clk = CONFIG_NAND_PXA3xx_CLK;
+#endif /* __U_BOOT__ */
+ uint32_t ndtr0, ndtr1;
+
+ ndtr0 = NDTR0_tCH(ns2cycle(t->tCH, nand_clk)) |
+ NDTR0_tCS(ns2cycle(t->tCS, nand_clk)) |
+ NDTR0_tWH(ns2cycle(t->tWH, nand_clk)) |
+ NDTR0_tWP(ns2cycle(t->tWP, nand_clk)) |
+ NDTR0_tRH(ns2cycle(t->tRH, nand_clk)) |
+ NDTR0_tRP(ns2cycle(t->tRP, nand_clk));
+
+ ndtr1 = NDTR1_tR(ns2cycle(t->tR, nand_clk)) |
+ NDTR1_tWHR(ns2cycle(t->tWHR, nand_clk)) |
+ NDTR1_tAR(ns2cycle(t->tAR, nand_clk));
+
+ nand_writel(info, NDTR0CS0, ndtr0);
+ nand_writel(info, NDTR1CS0, ndtr1);
+}
+
+#ifdef CONFIG_MTD_NAND_PXA3xx_POLLING
+/* Note: erase needs that long! */
+#define WAIT_EVENT_TIMEOUT 200
+#else /* CONFIG_MTD_NAND_PXA3xx_POLLING */
+#define WAIT_EVENT_TIMEOUT 10
+#endif /* CONFIG_MTD_NAND_PXA3xx_POLLING */
+
+static int wait_for_event(struct pxa3xx_nand_info *info, uint32_t event)
+{
+ int timeout = WAIT_EVENT_TIMEOUT;
+ uint32_t ndsr;
+
+ DEBUGF("wait_for_event(");
+
+#ifdef DEBUG
+ if (event & (NDSR_RDDREQ | NDSR_DBERR | NDSR_SBERR))
+ DEBUGF("event = NDSR_RDDREQ | NDSR_DBERR | NDSR_SBERR)\n");
+ else if (event & NDSR_WRDREQ)
+ DEBUGF("event = NDSR_WRDREQ)\n");
+ else if (event & (NDSR_CS0_BBD | NDSR_CS0_CMDD))
+ DEBUGF("event = NDSR_CS0_BBD | NDSR_CS0_CMDD)\n");
+#endif /* DEBUG */
+
+#ifdef CONFIG_MTD_NAND_PXA3xx_POLLING
+ if (event & (NDSR_RDDREQ | NDSR_DBERR | NDSR_SBERR))
+ info->state = STATE_PIO_READING;
+ else if (event & NDSR_WRDREQ)
+ info->state = STATE_PIO_WRITING;
+#endif /* CONFIG_MTD_NAND_PXA3xx_POLLING */
+
+ while (timeout--) {
+ ndsr = nand_readl(info, NDSR) & NDSR_MASK;
+
+#ifdef DEBUG
+ if (ndsr & (NDSR_RDDREQ | NDSR_DBERR | NDSR_SBERR))
+ DEBUGF("NDSR_RDDREQ | NDSR_DBERR | NDSR_SBERR\n");
+ else if (ndsr & NDSR_WRDREQ)
+ DEBUGF("NDSR_WRDREQ\n");
+ else if (ndsr & (NDSR_CS0_BBD | NDSR_CS0_CMDD))
+ DEBUGF("NDSR_CS0_BBD | NDSR_CS0_CMDD\n");
+#endif /* DEBUG */
+
+ if (ndsr & event) {
+ nand_writel(info, NDSR, ndsr);
+ return 0;
+ }
+ udelay(10);
+ }
+
+ return -ETIMEDOUT;
+}
+
+static int prepare_read_prog_cmd(struct pxa3xx_nand_info *info,
+ uint16_t cmd, int column, int page_addr)
+{
+ const struct pxa3xx_nand_flash *f = info->flash_info;
+ const struct pxa3xx_nand_cmdset *cmdset = f->cmdset;
+
+ /* calculate data size */
+ switch (f->page_size) {
+ case 2048:
+ info->data_size = (info->use_ecc) ? 2088 : 2112;
+ break;
+ case 512:
+ info->data_size = (info->use_ecc) ? 520 : 528;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ /* generate values for NDCBx registers */
+ info->ndcb0 = cmd | ((cmd & 0xff00) ? NDCB0_DBC : 0);
+ info->ndcb1 = 0;
+ info->ndcb2 = 0;
+ info->ndcb0 |= NDCB0_ADDR_CYC(info->row_addr_cycles +
+ info->col_addr_cycles);
+
+ if (info->col_addr_cycles == 2) {
+ /* large block, 2 cycles for column address
+ * row address starts from 3rd cycle
+ */
+ info->ndcb1 |= page_addr << 16;
+ if (info->row_addr_cycles == 3)
+ info->ndcb2 = (page_addr >> 16) & 0xff;
+ } else
+ /* small block, 1 cycles for column address
+ * row address starts from 2nd cycle
+ */
+ info->ndcb1 = page_addr << 8;
+
+ if (cmd == cmdset->program)
+ info->ndcb0 |= NDCB0_CMD_TYPE(1) | NDCB0_AUTO_RS;
+
+ return 0;
+}
+
+static int prepare_erase_cmd(struct pxa3xx_nand_info *info,
+ uint16_t cmd, int page_addr)
+{
+ info->ndcb0 = cmd | ((cmd & 0xff00) ? NDCB0_DBC : 0);
+ info->ndcb0 |= NDCB0_CMD_TYPE(2) | NDCB0_AUTO_RS | NDCB0_ADDR_CYC(3);
+ info->ndcb1 = page_addr;
+ info->ndcb2 = 0;
+
+/* TODO: When programming an erase command the contents of ADDR1 must be
+ replicated in ADDR5 in order to save the full address during a bad block
+ detect since only fields ADDR2 through ADDR5 are saved. */
+
+ return 0;
+}
+
+static int prepare_other_cmd(struct pxa3xx_nand_info *info, uint16_t cmd)
+{
+ const struct pxa3xx_nand_cmdset *cmdset = info->flash_info->cmdset;
+
+ DEBUGF("prepare_other_cmd(");
+
+ info->ndcb0 = cmd | ((cmd & 0xff00) ? NDCB0_DBC : 0);
+ info->ndcb1 = 0;
+ info->ndcb2 = 0;
+
+ if (cmd == cmdset->read_id) {
+ DEBUGF("cmd = read_id)\n");
+ /* 1 dummy address cycle */
+ info->ndcb0 |= NDCB0_CMD_TYPE(3);
+ info->data_size = 8;
+ } else if (cmd == cmdset->read_status) {
+ DEBUGF("cmd = read_status)\n");
+ info->ndcb0 |= NDCB0_CMD_TYPE(4);
+ info->data_size = 8;
+ } else if (cmd == cmdset->reset || cmd == cmdset->lock ||
+ cmd == cmdset->unlock) {
+ DEBUGF("cmd = reset | lock | unlock)\n");
+ info->ndcb0 |= NDCB0_CMD_TYPE(5);
+ } else {
+ DEBUGF("cmd = invalid)\n");
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+#ifndef CONFIG_MTD_NAND_PXA3xx_POLLING
+static void enable_int(struct pxa3xx_nand_info *info, uint32_t int_mask)
+{
+ uint32_t ndcr;
+
+ ndcr = nand_readl(info, NDCR);
+ nand_writel(info, NDCR, ndcr & ~int_mask);
+}
+
+static void disable_int(struct pxa3xx_nand_info *info, uint32_t int_mask)
+{
+ uint32_t ndcr;
+
+ ndcr = nand_readl(info, NDCR);
+ nand_writel(info, NDCR, ndcr | int_mask);
+}
+#endif /* CONFIG_MTD_NAND_PXA3xx_POLLING */
+
+/* NOTE: it is a must to set ND_RUN firstly, then write command buffer
+ * otherwise, it does not work
+ */
+static int write_cmd(struct pxa3xx_nand_info *info)
+{
+ uint32_t ndcr;
+
+ DEBUGF("write_cmd\n");
+
+ /* clear status bits and run */
+ nand_writel(info, NDSR, NDSR_MASK);
+
+ ndcr = info->reg_ndcr;
+
+ ndcr |= info->use_ecc ? NDCR_ECC_EN : 0;
+ ndcr |= info->use_dma ? NDCR_DMA_EN : 0;
+ ndcr |= NDCR_ND_RUN;
+
+ nand_writel(info, NDCR, ndcr);
+
+ if (wait_for_event(info, NDSR_WRCMDREQ)) {
+ printk(KERN_ERR "timed out writing command\n");
+ return -ETIMEDOUT;
+ }
+
+ nand_writel(info, NDCB0, info->ndcb0);
+ nand_writel(info, NDCB0, info->ndcb1);
+ nand_writel(info, NDCB0, info->ndcb2);
+ return 0;
+}
+
+static int handle_data_pio(struct pxa3xx_nand_info *info)
+{
+ int ret;
+#ifndef CONFIG_MTD_NAND_PXA3xx_POLLING
+ int timeout = CHIP_DELAY_TIMEOUT;
+#endif /* CONFIG_MTD_NAND_PXA3xx_POLLING */
+
+ DEBUGF("handle_data_pio\n");
+
+ switch (info->state) {
+ case STATE_PIO_WRITING:
+ nand_writesl(info->mmio_base + NDDB, info->data_buff,
+ DIV_ROUND_UP(info->data_size, 4));
+
+#ifdef CONFIG_MTD_NAND_PXA3xx_POLLING
+ ret = wait_for_event(info, NDSR_CS0_BBD | NDSR_CS0_CMDD);
+ if (ret) {
+#else /* CONFIG_MTD_NAND_PXA3xx_POLLING */
+ enable_int(info, NDSR_CS0_BBD | NDSR_CS0_CMDD);
+
+ ret = wait_for_completion_timeout(&info->cmd_complete, timeout);
+ if (!ret) {
+#endif /* CONFIG_MTD_NAND_PXA3xx_POLLING */
+ printk(KERN_ERR "program command time out\n");
+ return -1;
+ }
+ break;
+ case STATE_PIO_READING:
+ nand_readsl(info->mmio_base + NDDB, info->data_buff,
+ DIV_ROUND_UP(info->data_size, 4));
+ break;
+ default:
+ printk(KERN_ERR "%s: invalid state %d\n", __func__,
+ info->state);
+ return -EINVAL;
+ }
+
+ info->state = STATE_READY;
+ return 0;
+}
+
+#ifndef CONFIG_MTD_NAND_PXA3xx_POLLING
+static void start_data_dma(struct pxa3xx_nand_info *info, int dir_out)
+{
+ struct pxa_dma_desc *desc = info->data_desc;
+ int dma_len = ALIGN(info->data_size, 32);
+
+ desc->ddadr = DDADR_STOP;
+ desc->dcmd = DCMD_ENDIRQEN | DCMD_WIDTH4 | DCMD_BURST32 | dma_len;
+
+ if (dir_out) {
+ desc->dsadr = info->data_buff_phys;
+ desc->dtadr = info->mmio_phys + NDDB;
+ desc->dcmd |= DCMD_INCSRCADDR | DCMD_FLOWTRG;
+ } else {
+ desc->dtadr = info->data_buff_phys;
+ desc->dsadr = info->mmio_phys + NDDB;
+ desc->dcmd |= DCMD_INCTRGADDR | DCMD_FLOWSRC;
+ }
+
+ DRCMR(info->drcmr_dat) = DRCMR_MAPVLD | info->data_dma_ch;
+ DDADR(info->data_dma_ch) = info->data_desc_addr;
+ DCSR(info->data_dma_ch) |= DCSR_RUN;
+}
+
+static void pxa3xx_nand_data_dma_irq(int channel, void *data)
+{
+ struct pxa3xx_nand_info *info = data;
+ uint32_t dcsr;
+
+ dcsr = DCSR(channel);
+ DCSR(channel) = dcsr;
+
+ if (dcsr & DCSR_BUSERR) {
+ info->retcode = ERR_DMABUSERR;
+ complete(&info->cmd_complete);
+ }
+
+ if (info->state == STATE_DMA_WRITING) {
+ info->state = STATE_DMA_DONE;
+ enable_int(info, NDSR_CS0_BBD | NDSR_CS0_CMDD);
+ } else {
+ info->state = STATE_READY;
+ complete(&info->cmd_complete);
+ }
+}
+
+static irqreturn_t pxa3xx_nand_irq(int irq, void *devid)
+{
+ struct pxa3xx_nand_info *info = devid;
+ unsigned int status;
+
+ DEBUGF("pxa3xx_nand_irq\n");
+
+ status = nand_readl(info, NDSR);
+
+ if (status & (NDSR_RDDREQ | NDSR_DBERR | NDSR_SBERR)) {
+ if (status & NDSR_DBERR)
+ info->retcode = ERR_DBERR;
+ else if (status & NDSR_SBERR)
+ info->retcode = ERR_SBERR;
+
+ disable_int(info, NDSR_RDDREQ | NDSR_DBERR | NDSR_SBERR);
+
+ if (info->use_dma) {
+ info->state = STATE_DMA_READING;
+ start_data_dma(info, 0);
+ } else {
+ info->state = STATE_PIO_READING;
+ complete(&info->cmd_complete);
+ }
+ } else if (status & NDSR_WRDREQ) {
+ disable_int(info, NDSR_WRDREQ);
+ if (info->use_dma) {
+ info->state = STATE_DMA_WRITING;
+ start_data_dma(info, 1);
+ } else {
+ info->state = STATE_PIO_WRITING;
+ complete(&info->cmd_complete);
+ }
+ } else if (status & (NDSR_CS0_BBD | NDSR_CS0_CMDD)) {
+ if (status & NDSR_CS0_BBD)
+ info->retcode = ERR_BBERR;
+
+ disable_int(info, NDSR_CS0_BBD | NDSR_CS0_CMDD);
+ info->state = STATE_READY;
+ complete(&info->cmd_complete);
+ }
+ nand_writel(info, NDSR, status);
+ return IRQ_HANDLED;
+}
+#endif /* CONFIG_MTD_NAND_PXA3xx_POLLING */
+
+static int pxa3xx_nand_do_cmd(struct pxa3xx_nand_info *info, uint32_t event)
+{
+ uint32_t ndcr;
+ int ret;
+#ifndef CONFIG_MTD_NAND_PXA3xx_POLLING
+ int timeout = CHIP_DELAY_TIMEOUT;
+#endif /* CONFIG_MTD_NAND_PXA3xx_POLLING */
+
+ DEBUGF("pxa3xx_nand_do_cmd\n");
+
+ if (write_cmd(info)) {
+ info->retcode = ERR_SENDCMD;
+ goto fail_stop;
+ }
+
+ info->state = STATE_CMD_HANDLE;
+
+#ifdef CONFIG_MTD_NAND_PXA3xx_POLLING
+ ret = wait_for_event(info, event);
+ if (ret) {
+#else /* CONFIG_MTD_NAND_PXA3xx_POLLING */
+ enable_int(info, event);
+
+ ret = wait_for_completion_timeout(&info->cmd_complete, timeout);
+ if (!ret) {
+#endif /* CONFIG_MTD_NAND_PXA3xx_POLLING */
+ printk(KERN_ERR "command execution timed out\n");
+ info->retcode = ERR_SENDCMD;
+ goto fail_stop;
+ }
+
+ if (info->use_dma == 0 && info->data_size > 0)
+ if (handle_data_pio(info))
+ goto fail_stop;
+
+ return 0;
+
+fail_stop:
+ ndcr = nand_readl(info, NDCR);
+ nand_writel(info, NDCR, ndcr & ~NDCR_ND_RUN);
+ udelay(10);
+ return -ETIMEDOUT;
+}
+
+static int pxa3xx_nand_dev_ready(struct mtd_info *mtd)
+{
+ struct nand_chip *chip = mtd->priv;
+ struct pxa3xx_nand_info *info = chip->priv;
+ return (nand_readl(info, NDSR) & NDSR_RDY) ? 1 : 0;
+}
+
+static inline int is_buf_blank(uint8_t *buf, size_t len)
+{
+ for (; len > 0; len--)
+ if (*buf++ != 0xff)
+ return 0;
+ return 1;
+}
+
+static void pxa3xx_nand_cmdfunc(struct mtd_info *mtd, unsigned command,
+ int column, int page_addr)
+{
+ struct nand_chip *chip = mtd->priv;
+ struct pxa3xx_nand_info *info = chip->priv;
+ const struct pxa3xx_nand_flash *flash_info = info->flash_info;
+ const struct pxa3xx_nand_cmdset *cmdset = flash_info->cmdset;
+ int ret;
+
+ DEBUGF("pxa3xx_nand_cmdfunc(");
+
+ info->use_dma = (use_dma) ? 1 : 0;
+ info->use_ecc = 0;
+ info->data_size = 0;
+ info->state = STATE_READY;
+
+#ifndef CONFIG_MTD_NAND_PXA3xx_POLLING
+ init_completion(&info->cmd_complete);
+#endif /* CONFIG_MTD_NAND_PXA3xx_POLLING */
+
+ switch (command) {
+ case NAND_CMD_READOOB:
+ DEBUGF("command = NAND_CMD_READOOB)\n");
+ /* disable HW ECC to get all the OOB data */
+ info->buf_count = mtd->writesize + mtd->oobsize;
+ info->buf_start = mtd->writesize + column;
+ memset(info->data_buff, 0xFF, info->buf_count);
+
+ if (prepare_read_prog_cmd(info, cmdset->read1, column,
+ page_addr))
+ break;
+
+ pxa3xx_nand_do_cmd(info, NDSR_RDDREQ | NDSR_DBERR | NDSR_SBERR);
+
+ /* We only are OOB, so if the data has error, does not matter */
+ if (info->retcode == ERR_DBERR)
+ info->retcode = ERR_NONE;
+ break;
+
+ case NAND_CMD_READ0:
+ DEBUGF("command = NAND_CMD_READ0)\n");
+ info->use_ecc = 1;
+ info->retcode = ERR_NONE;
+ info->buf_start = column;
+ info->buf_count = mtd->writesize + mtd->oobsize;
+ memset(info->data_buff, 0xFF, info->buf_count);
+
+ if (prepare_read_prog_cmd(info, cmdset->read1, column,
+ page_addr))
+ break;
+
+ pxa3xx_nand_do_cmd(info, NDSR_RDDREQ | NDSR_DBERR | NDSR_SBERR);
+
+ if (info->retcode == ERR_DBERR) {
+ /* for blank page (all 0xff), HW will calculate its ECC
+ * as 0, which is different from the ECC information
+ * within OOB, ignore such double bit errors
+ */
+ if (is_buf_blank(info->data_buff, mtd->writesize))
+ info->retcode = ERR_NONE;
+ }
+ break;
+ case NAND_CMD_SEQIN:
+ DEBUGF("command = NAND_CMD_SEQIN)\n");
+ info->buf_start = column;
+ info->buf_count = mtd->writesize + mtd->oobsize;
+ memset(info->data_buff, 0xff, info->buf_count);
+
+ /* save column/page_addr for next CMD_PAGEPROG */
+ info->seqin_column = column;
+ info->seqin_page_addr = page_addr;
+ break;
+ case NAND_CMD_PAGEPROG:
+ DEBUGF("command = NAND_CMD_PAGEPROG)\n");
+ info->use_ecc = (info->seqin_column >= mtd->writesize) ? 0 : 1;
+
+ if (prepare_read_prog_cmd(info, cmdset->program,
+ info->seqin_column, info->seqin_page_addr))
+ break;
+
+ pxa3xx_nand_do_cmd(info, NDSR_WRDREQ);
+ break;
+ case NAND_CMD_ERASE1:
+ DEBUGF("command = NAND_CMD_ERASE1)\n");
+ if (prepare_erase_cmd(info, cmdset->erase, page_addr))
+ break;
+
+ pxa3xx_nand_do_cmd(info, NDSR_CS0_BBD | NDSR_CS0_CMDD);
+ break;
+ case NAND_CMD_ERASE2:
+ DEBUGF("command = NAND_CMD_ERASE2)\n");
+ break;
+ case NAND_CMD_READID:
+ DEBUGF("command = NAND_CMD_READID)\n");
+ case NAND_CMD_STATUS:
+ if (command == NAND_CMD_STATUS)
+ DEBUGF("command = NAND_CMD_STATUS)\n");
+ info->use_dma = 0; /* force PIO read */
+ info->buf_start = 0;
+ info->buf_count = (command == NAND_CMD_READID) ?
+ info->read_id_bytes : 1;
+
+ if (prepare_other_cmd(info, (command == NAND_CMD_READID) ?
+ cmdset->read_id : cmdset->read_status))
+ break;
+
+ pxa3xx_nand_do_cmd(info, NDSR_RDDREQ);
+ break;
+ case NAND_CMD_RESET:
+ DEBUGF("command = NAND_CMD_RESET)\n");
+ if (prepare_other_cmd(info, cmdset->reset))
+ break;
+
+ ret = pxa3xx_nand_do_cmd(info, NDSR_CS0_CMDD);
+ if (ret == 0) {
+ int timeout = 2;
+ uint32_t ndcr;
+
+ while (timeout--) {
+ if (nand_readl(info, NDSR) & NDSR_RDY)
+ break;
+ msleep(10);
+ }
+
+ ndcr = nand_readl(info, NDCR);
+ nand_writel(info, NDCR, ndcr & ~NDCR_ND_RUN);
+ }
+ break;
+ default:
+ printk(KERN_ERR "non-supported command.\n");
+ break;
+ }
+
+ if (info->retcode == ERR_DBERR) {
+ printk(KERN_ERR "double bit error @ page %08x\n", page_addr);
+ info->retcode = ERR_NONE;
+ }
+}
+
+static uint8_t pxa3xx_nand_read_byte(struct mtd_info *mtd)
+{
+ struct nand_chip *chip = mtd->priv;
+ struct pxa3xx_nand_info *info = chip->priv;
+ char retval = 0xFF;
+
+ if (info->buf_start < info->buf_count)
+ /* Has just send a new command? */
+ retval = info->data_buff[info->buf_start++];
+
+ return retval;
+}
+
+static u16 pxa3xx_nand_read_word(struct mtd_info *mtd)
+{
+ struct nand_chip *chip = mtd->priv;
+ struct pxa3xx_nand_info *info = chip->priv;
+ u16 retval = 0xFFFF;
+
+ if (!(info->buf_start & 0x01) && info->buf_start < info->buf_count) {
+ retval = *((u16 *)(info->data_buff+info->buf_start));
+ info->buf_start += 2;
+ }
+ return retval;
+}
+
+static void pxa3xx_nand_read_buf(struct mtd_info *mtd, uint8_t *buf, int len)
+{
+ struct nand_chip *chip = mtd->priv;
+ struct pxa3xx_nand_info *info = chip->priv;
+ int real_len = min_t(size_t, len, info->buf_count - info->buf_start);
+
+ memcpy(buf, info->data_buff + info->buf_start, real_len);
+ info->buf_start += real_len;
+}
+
+static void pxa3xx_nand_write_buf(struct mtd_info *mtd,
+ const uint8_t *buf, int len)
+{
+ struct nand_chip *chip = mtd->priv;
+ struct pxa3xx_nand_info *info = chip->priv;
+ int real_len = min_t(size_t, len, info->buf_count - info->buf_start);
+
+ memcpy(info->data_buff + info->buf_start, buf, real_len);
+ info->buf_start += real_len;
+}
+
+static int pxa3xx_nand_verify_buf(struct mtd_info *mtd,
+ const uint8_t *buf, int len)
+{
+ return 0;
+}
+
+static void pxa3xx_nand_select_chip(struct mtd_info *mtd, int chip)
+{
+ return;
+}
+
+static int pxa3xx_nand_waitfunc(struct mtd_info *mtd, struct nand_chip *this)
+{
+ struct pxa3xx_nand_info *info = this->priv;
+
+ /* pxa3xx_nand_send_command has waited for command complete */
+ if (this->state == FL_WRITING || this->state == FL_ERASING) {
+ if (info->retcode == ERR_NONE)
+ return 0;
+ else {
+ /*
+ * any error make it return 0x01 which will tell
+ * the caller the erase and write fail
+ */
+ return 0x01;
+ }
+ }
+
+ return 0;
+}
+
+static void pxa3xx_nand_ecc_hwctl(struct mtd_info *mtd, int mode)
+{
+ return;
+}
+
+static int pxa3xx_nand_ecc_calculate(struct mtd_info *mtd,
+ const uint8_t *dat, uint8_t *ecc_code)
+{
+ return 0;
+}
+
+static int pxa3xx_nand_ecc_correct(struct mtd_info *mtd,
+ uint8_t *dat, uint8_t *read_ecc, uint8_t *calc_ecc)
+{
+ struct nand_chip *chip = mtd->priv;
+ struct pxa3xx_nand_info *info = chip->priv;
+ /*
+ * Any error include ERR_SEND_CMD, ERR_DBERR, ERR_BUSERR, we
+ * consider it as a ecc error which will tell the caller the
+ * read fail We have distinguish all the errors, but the
+ * nand_read_ecc only check this function return value
+ *
+ * Corrected (single-bit) errors must also be noted.
+ */
+ if (info->retcode == ERR_SBERR)
+ return 1;
+ else if (info->retcode != ERR_NONE)
+ return -1;
+
+ return 0;
+}
+
+static int __readid(struct pxa3xx_nand_info *info, uint32_t *id)
+{
+ const struct pxa3xx_nand_flash *f = info->flash_info;
+ const struct pxa3xx_nand_cmdset *cmdset = f->cmdset;
+ uint32_t ndcr;
+ uint8_t id_buff[8];
+
+ DEBUGF("__readid\n");
+
+ if (prepare_other_cmd(info, cmdset->read_id)) {
+ printk(KERN_ERR "failed to prepare command\n");
+ return -EINVAL;
+ }
+
+ /* Send command */
+ if (write_cmd(info))
+ goto fail_timeout;
+
+ /* Wait for CMDDM(command done successfully) */
+ if (wait_for_event(info, NDSR_RDDREQ))
+ goto fail_timeout;
+
+ nand_readsl(info->mmio_base + NDDB, id_buff, 2);
+ *id = id_buff[0] | (id_buff[1] << 8);
+ return 0;
+
+fail_timeout:
+ ndcr = nand_readl(info, NDCR);
+ nand_writel(info, NDCR, ndcr & ~NDCR_ND_RUN);
+ udelay(10);
+ return -ETIMEDOUT;
+}
+
+static int pxa3xx_nand_config_flash(struct pxa3xx_nand_info *info,
+ const struct pxa3xx_nand_flash *f)
+{
+#ifndef __U_BOOT__
+ struct platform_device *pdev = info->pdev;
+ struct pxa3xx_nand_platform_data *pdata = pdev->dev.platform_data;
+#endif /* __U_BOOT__ */
+ uint32_t ndcr = 0x00000FFF; /* disable all interrupts */
+
+ if (f->page_size != 2048 && f->page_size != 512)
+ return -EINVAL;
+
+ if (f->flash_width != 16 && f->flash_width != 8)
+ return -EINVAL;
+
+ /* calculate flash information */
+ info->oob_size = (f->page_size == 2048) ? 64 : 16;
+/* TODO: what about 5 id byte or ONFI flash? */
+ info->read_id_bytes = (f->page_size == 2048) ? 4 : 2;
+
+ /* calculate addressing information */
+ info->col_addr_cycles = (f->page_size == 2048) ? 2 : 1;
+
+ if (f->num_blocks * f->page_per_block > 65536)
+ info->row_addr_cycles = 3;
+ else
+ info->row_addr_cycles = 2;
+
+#ifdef __U_BOOT__
+ ndcr |= NDCR_ND_ARB_EN;
+#else /* __U_BOOT__ */
+ ndcr |= (pdata->enable_arbiter) ? NDCR_ND_ARB_EN : 0;
+#endif /* __U_BOOT__ */
+ ndcr |= (info->col_addr_cycles == 2) ? NDCR_RA_START : 0;
+ ndcr |= (f->page_per_block == 64) ? NDCR_PG_PER_BLK : 0;
+ ndcr |= (f->page_size == 2048) ? NDCR_PAGE_SZ : 0;
+ ndcr |= (f->flash_width == 16) ? NDCR_DWIDTH_M : 0;
+ ndcr |= (f->dfc_width == 16) ? NDCR_DWIDTH_C : 0;
+
+ ndcr |= NDCR_RD_ID_CNT(info->read_id_bytes);
+ ndcr |= NDCR_SPARE_EN; /* enable spare by default */
+
+ info->reg_ndcr = ndcr;
+
+ pxa3xx_nand_set_timing(info, f->timing);
+ info->flash_info = f;
+ return 0;
+}
+
+#ifndef __U_BOOT__
+static void pxa3xx_nand_detect_timing(struct pxa3xx_nand_info *info,
+ struct pxa3xx_nand_timing *t)
+{
+ unsigned long nand_clk = clk_get_rate(info->clk);
+ uint32_t ndtr0 = nand_readl(info, NDTR0CS0);
+ uint32_t ndtr1 = nand_readl(info, NDTR1CS0);
+
+ t->tCH = cycle2ns(tCH_NDTR0(ndtr0), nand_clk);
+ t->tCS = cycle2ns(tCS_NDTR0(ndtr0), nand_clk);
+ t->tWH = cycle2ns(tWH_NDTR0(ndtr0), nand_clk);
+ t->tWP = cycle2ns(tWP_NDTR0(ndtr0), nand_clk);
+ t->tRH = cycle2ns(tRH_NDTR0(ndtr0), nand_clk);
+ t->tRP = cycle2ns(tRP_NDTR0(ndtr0), nand_clk);
+
+ t->tR = cycle2ns(tR_NDTR1(ndtr1), nand_clk);
+ t->tWHR = cycle2ns(tWHR_NDTR1(ndtr1), nand_clk);
+ t->tAR = cycle2ns(tAR_NDTR1(ndtr1), nand_clk);
+}
+
+static int pxa3xx_nand_detect_config(struct pxa3xx_nand_info *info)
+{
+ uint32_t ndcr = nand_readl(info, NDCR);
+ struct nand_flash_dev *type = NULL;
+ uint32_t id = -1;
+ int i;
+
+ default_flash.page_per_block = ndcr & NDCR_PG_PER_BLK ? 64 : 32;
+ default_flash.page_size = ndcr & NDCR_PAGE_SZ ? 2048 : 512;
+ default_flash.flash_width = ndcr & NDCR_DWIDTH_M ? 16 : 8;
+ default_flash.dfc_width = ndcr & NDCR_DWIDTH_C ? 16 : 8;
+
+ if (default_flash.page_size == 2048)
+ default_flash.cmdset = &largepage_cmdset;
+ else
+ default_flash.cmdset = &smallpage_cmdset;
+
+ /* set info fields needed to __readid */
+ info->flash_info = &default_flash;
+ info->read_id_bytes = (default_flash.page_size == 2048) ? 4 : 2;
+ info->reg_ndcr = ndcr;
+
+ if (__readid(info, &id))
+ return -ENODEV;
+
+ /* Lookup the flash id */
+ id = (id >> 8) & 0xff; /* device id is byte 2 */
+ for (i = 0; nand_flash_ids[i].name != NULL; i++) {
+ if (id == nand_flash_ids[i].id) {
+ type = &nand_flash_ids[i];
+ break;
+ }
+ }
+
+ if (!type)
+ return -ENODEV;
+
+ /* fill the missing flash information */
+ i = __ffs(default_flash.page_per_block * default_flash.page_size);
+ default_flash.num_blocks = type->chipsize << (20 - i);
+
+ info->oob_size = (default_flash.page_size == 2048) ? 64 : 16;
+
+ /* calculate addressing information */
+ info->col_addr_cycles = (default_flash.page_size == 2048) ? 2 : 1;
+
+ if (default_flash.num_blocks * default_flash.page_per_block > 65536)
+ info->row_addr_cycles = 3;
+ else
+ info->row_addr_cycles = 2;
+
+ pxa3xx_nand_detect_timing(info, &default_timing);
+ default_flash.timing = &default_timing;
+
+ return 0;
+}
+
+static int pxa3xx_nand_detect_flash(struct pxa3xx_nand_info *info, const struct
+ pxa3xx_nand_platform_data *pdata)
+#else /* __U_BOOT__ */
+static int pxa3xx_nand_detect_flash(struct pxa3xx_nand_info *info)
+#endif /* __U_BOOT__ */
+{
+ const struct pxa3xx_nand_flash *f;
+ uint32_t id = -1;
+ int i;
+
+#ifndef __U_BOOT__
+ if (pdata->keep_config)
+ if (pxa3xx_nand_detect_config(info) == 0)
+ return 0;
+
+ for (i = 0; i < pdata->num_flash; ++i) {
+ f = pdata->flash + i;
+
+ if (pxa3xx_nand_config_flash(info, f))
+ continue;
+
+ if (__readid(info, &id))
+ continue;
+
+ if (id == f->chip_id)
+ return 0;
+ }
+#endif /* __U_BOOT__ */
+
+#ifdef CONFIG_MTD_NAND_PXA3xx_BUILTIN
+ for (i = 0; i < ARRAY_SIZE(builtin_flash_types); i++) {
+
+ f = builtin_flash_types[i];
+
+ if (pxa3xx_nand_config_flash(info, f))
+ continue;
+
+ if (__readid(info, &id))
+ continue;
+
+ if (id == f->chip_id)
+ return 0;
+ }
+#endif
+
+#ifdef __U_BOOT__
+ printk(KERN_WARNING
+#else /* __U_BOOT__ */
+ dev_warn(&info->pdev->dev,
+#endif /* __U_BOOT__ */
+ "failed to detect configured NAND flash; found id %04x\n",
+ id);
+ return -ENODEV;
+}
+
+/* the maximum possible buffer size for large page with OOB data
+ * is: 2048 + 64 = 2112 bytes, allocate a page here for both the
+ * data buffer and the DMA descriptor
+ */
+#define MAX_BUFF_SIZE PAGE_SIZE
+
+static int pxa3xx_nand_init_buff(struct pxa3xx_nand_info *info)
+{
+#ifdef __U_BOOT__
+ info->data_buff = &static_data_buff[0];
+#else /* __U_BOOT__ */
+#ifndef CONFIG_MTD_NAND_PXA3xx_POLLING
+ struct platform_device *pdev = info->pdev;
+ int data_desc_offset = MAX_BUFF_SIZE - sizeof(struct pxa_dma_desc);
+#endif /* CONFIG_MTD_NAND_PXA3xx_POLLING */
+
+ if (use_dma == 0) {
+ info->data_buff = kmalloc(MAX_BUFF_SIZE, GFP_KERNEL);
+ if (info->data_buff == NULL)
+ return -ENOMEM;
+ return 0;
+ }
+
+#ifndef CONFIG_MTD_NAND_PXA3xx_POLLING
+ info->data_buff = dma_alloc_coherent(&pdev->dev, MAX_BUFF_SIZE,
+ &info->data_buff_phys, GFP_KERNEL);
+ if (info->data_buff == NULL) {
+ dev_err(&pdev->dev, "failed to allocate dma buffer\n");
+ return -ENOMEM;
+ }
+
+ info->data_buff_size = MAX_BUFF_SIZE;
+ info->data_desc = (void *)info->data_buff + data_desc_offset;
+ info->data_desc_addr = info->data_buff_phys + data_desc_offset;
+
+ info->data_dma_ch = pxa_request_dma("nand-data", DMA_PRIO_LOW,
+ pxa3xx_nand_data_dma_irq, info);
+ if (info->data_dma_ch < 0) {
+ dev_err(&pdev->dev, "failed to request data dma\n");
+ dma_free_coherent(&pdev->dev, info->data_buff_size,
+ info->data_buff, info->data_buff_phys);
+ return info->data_dma_ch;
+ }
+#endif /* CONFIG_MTD_NAND_PXA3xx_POLLING */
+#endif /* __U_BOOT__ */
+
+ return 0;
+}
+
+static struct nand_ecclayout hw_smallpage_ecclayout = {
+ .eccbytes = 6,
+ .eccpos = {8, 9, 10, 11, 12, 13 },
+ .oobfree = { {2, 6} }
+};
+
+static struct nand_ecclayout hw_largepage_ecclayout = {
+ .eccbytes = 24,
+ .eccpos = {
+ 40, 41, 42, 43, 44, 45, 46, 47,
+ 48, 49, 50, 51, 52, 53, 54, 55,
+ 56, 57, 58, 59, 60, 61, 62, 63},
+ .oobfree = { {2, 38} }
+};
+
+static void pxa3xx_nand_init_mtd(struct mtd_info *mtd)
+{
+ struct nand_chip *this = mtd->priv;
+ struct pxa3xx_nand_info *info = this->priv;
+ const struct pxa3xx_nand_flash *f = info->flash_info;
+
+ this->options = NAND_USE_FLASH_BBT |
+ ((f->flash_width == 16) ? NAND_BUSWIDTH_16 : 0);
+
+ this->waitfunc = pxa3xx_nand_waitfunc;
+ this->select_chip = pxa3xx_nand_select_chip;
+ this->dev_ready = pxa3xx_nand_dev_ready;
+ this->cmdfunc = pxa3xx_nand_cmdfunc;
+ this->read_word = pxa3xx_nand_read_word;
+ this->read_byte = pxa3xx_nand_read_byte;
+ this->read_buf = pxa3xx_nand_read_buf;
+ this->write_buf = pxa3xx_nand_write_buf;
+ this->verify_buf = pxa3xx_nand_verify_buf;
+
+ this->ecc.mode = NAND_ECC_HW;
+ this->ecc.hwctl = pxa3xx_nand_ecc_hwctl;
+ this->ecc.calculate = pxa3xx_nand_ecc_calculate;
+ this->ecc.correct = pxa3xx_nand_ecc_correct;
+ this->ecc.size = f->page_size;
+
+ if (f->page_size == 2048)
+ this->ecc.layout = &hw_largepage_ecclayout;
+ else
+ this->ecc.layout = &hw_smallpage_ecclayout;
+
+ this->chip_delay = 25;
+}
+
+#ifdef __U_BOOT__
+/* To be called from board-specific NAND initialization board_nand_init()
+ after having set up DFC GPIOs. */
+int pxa3xx_nand_probe(struct nand_chip *chip)
+{
+ struct pxa3xx_nand_info *info = &static_info;
+ struct mtd_info temp_mtd;
+ struct mtd_info *mtd = &temp_mtd;
+#else /* __U_BOOT__ */
+static int pxa3xx_nand_probe(struct platform_device *pdev)
+{
+ struct pxa3xx_nand_platform_data *pdata;
+ struct pxa3xx_nand_info *info;
+ struct nand_chip *this;
+ struct mtd_info *mtd;
+ struct resource *r;
+ int irq;
+#endif /* __U_BOOT__ */
+ int ret = 0;
+
+#ifndef __U_BOOT__
+ pdata = pdev->dev.platform_data;
+
+ if (!pdata) {
+ dev_err(&pdev->dev, "no platform data defined\n");
+ return -ENODEV;
+ }
+
+ mtd = kzalloc(sizeof(struct mtd_info) + sizeof(struct pxa3xx_nand_info),
+ GFP_KERNEL);
+ if (!mtd) {
+ dev_err(&pdev->dev, "failed to allocate memory\n");
+ return -ENOMEM;
+ }
+
+ info = (struct pxa3xx_nand_info *)(&mtd[1]);
+ info->pdev = pdev;
+
+ this = &info->nand_chip;
+ mtd->priv = info;
+ mtd->owner = THIS_MODULE;
+
+ info->clk = clk_get(&pdev->dev, NULL);
+ if (IS_ERR(info->clk)) {
+ dev_err(&pdev->dev, "failed to get nand clock\n");
+ ret = PTR_ERR(info->clk);
+ goto fail_free_mtd;
+ }
+ clk_enable(info->clk);
+#else /* __U_BOOT__ */
+ mtd->priv = chip;
+ chip->priv = info;
+
+ /* turn on the NAND controller clock */
+ CKENA |= (CKENA_4_NAND | CKENA_9_SMC);
+#endif /* __U_BOOT__ */
+
+#ifndef __U_BOOT__
+ r = platform_get_resource(pdev, IORESOURCE_DMA, 0);
+ if (r == NULL) {
+ dev_err(&pdev->dev, "no resource defined for data DMA\n");
+ ret = -ENXIO;
+ goto fail_put_clk;
+ }
+ info->drcmr_dat = r->start;
+
+ r = platform_get_resource(pdev, IORESOURCE_DMA, 1);
+ if (r == NULL) {
+ dev_err(&pdev->dev, "no resource defined for command DMA\n");
+ ret = -ENXIO;
+ goto fail_put_clk;
+ }
+ info->drcmr_cmd = r->start;
+
+ irq = platform_get_irq(pdev, 0);
+ if (irq < 0) {
+ dev_err(&pdev->dev, "no IRQ resource defined\n");
+ ret = -ENXIO;
+ goto fail_put_clk;
+ }
+
+ r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (r == NULL) {
+ dev_err(&pdev->dev, "no IO memory resource defined\n");
+ ret = -ENODEV;
+ goto fail_put_clk;
+ }
+
+ r = request_mem_region(r->start, resource_size(r), pdev->name);
+ if (r == NULL) {
+ dev_err(&pdev->dev, "failed to request memory resource\n");
+ ret = -EBUSY;
+ goto fail_put_clk;
+ }
+
+ info->mmio_base = ioremap(r->start, resource_size(r));
+ if (info->mmio_base == NULL) {
+ dev_err(&pdev->dev, "ioremap() failed\n");
+ ret = -ENODEV;
+ goto fail_free_res;
+ }
+#ifndef CONFIG_MTD_NAND_PXA3xx_POLLING
+ info->mmio_phys = r->start;
+#endif /* CONFIG_MTD_NAND_PXA3xx_POLLING */
+#else /* __U_BOOT__ */
+ info->mmio_base = (void __iomem *)0x43100000;
+#endif /* __U_BOOT__ */
+
+ ret = pxa3xx_nand_init_buff(info);
+ if (ret)
+ goto fail_free_io;
+
+#ifndef CONFIG_MTD_NAND_PXA3xx_POLLING
+ ret = request_irq(irq, pxa3xx_nand_irq, IRQF_DISABLED,
+ pdev->name, info);
+ if (ret < 0) {
+ dev_err(&pdev->dev, "failed to request IRQ\n");
+ goto fail_free_buf;
+ }
+#endif /* CONFIG_MTD_NAND_PXA3xx_POLLING */
+
+#ifdef __U_BOOT__
+ ret = pxa3xx_nand_detect_flash(info);
+ if (ret) {
+ printk(KERN_ERR "failed to detect flash\n");
+#else /* __U_BOOT__ */
+ ret = pxa3xx_nand_detect_flash(info, pdata);
+ if (ret) {
+ dev_err(&pdev->dev, "failed to detect flash\n");
+#endif /* __U_BOOT__ */
+ ret = -ENODEV;
+ goto fail_free_irq;
+ }
+
+ pxa3xx_nand_init_mtd(mtd);
+
+#ifndef __U_BOOT__
+ platform_set_drvdata(pdev, mtd);
+
+ if (nand_scan(mtd, 1)) {
+ dev_err(&pdev->dev, "failed to scan nand\n");
+ ret = -ENXIO;
+ goto fail_free_irq;
+ }
+
+#ifdef CONFIG_MTD_PARTITIONS
+ ret = add_mtd_partitions(mtd, pdata->parts, pdata->nr_parts);
+#endif
+#endif /* __U_BOOT__ */
+ return ret;
+
+fail_free_irq:
+#ifndef __U_BOOT__
+ free_irq(IRQ_NAND, info);
+#endif /* __U_BOOT__ */
+#ifndef CONFIG_MTD_NAND_PXA3xx_POLLING
+fail_free_buf:
+ if (use_dma) {
+ pxa_free_dma(info->data_dma_ch);
+ dma_free_coherent(&pdev->dev, info->data_buff_size,
+ info->data_buff, info->data_buff_phys);
+ } else
+ kfree(info->data_buff);
+#endif /* CONFIG_MTD_NAND_PXA3xx_POLLING */
+fail_free_io:
+#ifndef __U_BOOT__
+ iounmap(info->mmio_base);
+fail_free_res:
+ release_mem_region(r->start, resource_size(r));
+fail_put_clk:
+ clk_disable(info->clk);
+ clk_put(info->clk);
+fail_free_mtd:
+ kfree(mtd);
+#endif /* __U_BOOT__ */
+ return ret;
+}
+
+#ifndef __U_BOOT__
+static int pxa3xx_nand_remove(struct platform_device *pdev)
+{
+ struct mtd_info *mtd = platform_get_drvdata(pdev);
+ struct pxa3xx_nand_info *info = mtd->priv;
+ struct resource *r;
+ int irq;
+
+ platform_set_drvdata(pdev, NULL);
+
+ del_mtd_device(mtd);
+#ifdef CONFIG_MTD_PARTITIONS
+ del_mtd_partitions(mtd);
+#endif
+#ifndef CONFIG_MTD_NAND_PXA3xx_POLLING
+ irq = platform_get_irq(pdev, 0);
+ if (irq >= 0)
+ free_irq(irq, info);
+#endif /* CONFIG_MTD_NAND_PXA3xx_POLLING */
+ if (use_dma) {
+ pxa_free_dma(info->data_dma_ch);
+ dma_free_writecombine(&pdev->dev, info->data_buff_size,
+ info->data_buff, info->data_buff_phys);
+ } else
+ kfree(info->data_buff);
+
+ iounmap(info->mmio_base);
+ r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ release_mem_region(r->start, resource_size(r));
+
+ clk_disable(info->clk);
+ clk_put(info->clk);
+
+ kfree(mtd);
+ return 0;
+}
+
+#ifdef CONFIG_PM
+static int pxa3xx_nand_suspend(struct platform_device *pdev, pm_message_t state)
+{
+ struct mtd_info *mtd = (struct mtd_info *)platform_get_drvdata(pdev);
+ struct pxa3xx_nand_info *info = mtd->priv;
+
+ if (info->state != STATE_READY) {
+ dev_err(&pdev->dev, "driver busy, state = %d\n", info->state);
+ return -EAGAIN;
+ }
+
+ return 0;
+}
+
+static int pxa3xx_nand_resume(struct platform_device *pdev)
+{
+ struct mtd_info *mtd = (struct mtd_info *)platform_get_drvdata(pdev);
+ struct pxa3xx_nand_info *info = mtd->priv;
+
+ clk_enable(info->clk);
+
+ return pxa3xx_nand_config_flash(info, info->flash_info);
+}
+#else /* CONFIG_PM */
+#define pxa3xx_nand_suspend NULL
+#define pxa3xx_nand_resume NULL
+#endif /* CONFIG_PM */
+
+static struct platform_driver pxa3xx_nand_driver = {
+ .driver = {
+ .name = "pxa3xx-nand",
+ },
+ .probe = pxa3xx_nand_probe,
+ .remove = pxa3xx_nand_remove,
+ .suspend = pxa3xx_nand_suspend,
+ .resume = pxa3xx_nand_resume,
+};
+
+static int __init pxa3xx_nand_init(void)
+{
+ return platform_driver_register(&pxa3xx_nand_driver);
+}
+module_init(pxa3xx_nand_init);
+
+static void __exit pxa3xx_nand_exit(void)
+{
+ platform_driver_unregister(&pxa3xx_nand_driver);
+}
+module_exit(pxa3xx_nand_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("PXA3xx NAND controller driver");
+#endif /* __U_BOOT__ */
diff --git a/include/asm-arm/arch-pxa/pxa-regs.h b/include/asm-arm/arch-pxa/pxa-regs.h
index a25d4c5..1a00acb 100644
--- a/include/asm-arm/arch-pxa/pxa-regs.h
+++ b/include/asm-arm/arch-pxa/pxa-regs.h
@@ -1230,13 +1230,13 @@ typedef void (*ExcpHndlr) (void) ;
#define GPIO4 __REG(0x40e10134)
#define nXCVREN __REG(0x40e10138)
-#define DF_CLE_NOE __REG(0x40e10204)
-#define DF_ALE_WE1 __REG(0x40e10208)
+#define DF_CLE_nOE __REG(0x40e10204)
+#define DF_ALE_nWE1 __REG(0x40e10208)
#define DF_SCLK_E __REG(0x40e10210)
#define nBE0 __REG(0x40e10214)
#define nBE1 __REG(0x40e10218)
-#define DF_ALE_WE2 __REG(0x40e1021c)
+#define DF_ALE_nWE2 __REG(0x40e1021c)
#define DF_INT_RnB __REG(0x40e10220)
#define DF_nCS0 __REG(0x40e10224)
#define DF_nCS1 __REG(0x40e10228)
@@ -2273,95 +2273,6 @@ typedef void (*ExcpHndlr) (void) ;
#define MDCNFG_DCSE1 0x2 /* SDRAM CS 1 Enable */
#define MDCNFG_DCSE0 0x1 /* SDRAM CS 0 Enable */
-
-/* Data Flash Controller Registers */
-
-#define NDCR __REG(0x43100000) /* Data Flash Control register */
-#define NDTR0CS0 __REG(0x43100004) /* Data Controller Timing Parameter 0 Register for ND_nCS0 */
-/* #define NDTR0CS1 __REG(0x43100008) /\* Data Controller Timing Parameter 0 Register for ND_nCS1 *\/ */
-#define NDTR1CS0 __REG(0x4310000C) /* Data Controller Timing Parameter 1 Register for ND_nCS0 */
-/* #define NDTR1CS1 __REG(0x43100010) /\* Data Controller Timing Parameter 1 Register for ND_nCS1 *\/ */
-#define NDSR __REG(0x43100014) /* Data Controller Status Register */
-#define NDPCR __REG(0x43100018) /* Data Controller Page Count Register */
-#define NDBDR0 __REG(0x4310001C) /* Data Controller Bad Block Register 0 */
-#define NDBDR1 __REG(0x43100020) /* Data Controller Bad Block Register 1 */
-#define NDDB __REG(0x43100040) /* Data Controller Data Buffer */
-#define NDCB0 __REG(0x43100048) /* Data Controller Command Buffer0 */
-#define NDCB1 __REG(0x4310004C) /* Data Controller Command Buffer1 */
-#define NDCB2 __REG(0x43100050) /* Data Controller Command Buffer2 */
-
-#define NDCR_SPARE_EN (0x1<<31)
-#define NDCR_ECC_EN (0x1<<30)
-#define NDCR_DMA_EN (0x1<<29)
-#define NDCR_ND_RUN (0x1<<28)
-#define NDCR_DWIDTH_C (0x1<<27)
-#define NDCR_DWIDTH_M (0x1<<26)
-#define NDCR_PAGE_SZ (0x3<<24)
-#define NDCR_NCSX (0x1<<23)
-#define NDCR_ND_STOP (0x1<<22)
-/* reserved:
- * #define NDCR_ND_MODE (0x3<<21)
- * #define NDCR_NAND_MODE 0x0 */
-#define NDCR_CLR_PG_CNT (0x1<<20)
-#define NDCR_CLR_ECC (0x1<<19)
-#define NDCR_RD_ID_CNT (0x7<<16)
-#define NDCR_RA_START (0x1<<15)
-#define NDCR_PG_PER_BLK (0x1<<14)
-#define NDCR_ND_ARB_EN (0x1<<12)
-#define NDCR_RDYM (0x1<<11)
-#define NDCR_CS0_PAGEDM (0x1<<10)
-#define NDCR_CS1_PAGEDM (0x1<<9)
-#define NDCR_CS0_CMDDM (0x1<<8)
-#define NDCR_CS1_CMDDM (0x1<<7)
-#define NDCR_CS0_BBDM (0x1<<6)
-#define NDCR_CS1_BBDM (0x1<<5)
-#define NDCR_DBERRM (0x1<<4)
-#define NDCR_SBERRM (0x1<<3)
-#define NDCR_WRDREQM (0x1<<2)
-#define NDCR_RDDREQM (0x1<<1)
-#define NDCR_WRCMDREQM (0x1)
-
-#define NDSR_RDY (0x1<<11)
-#define NDSR_CS0_PAGED (0x1<<10)
-#define NDSR_CS1_PAGED (0x1<<9)
-#define NDSR_CS0_CMDD (0x1<<8)
-#define NDSR_CS1_CMDD (0x1<<7)
-#define NDSR_CS0_BBD (0x1<<6)
-#define NDSR_CS1_BBD (0x1<<5)
-#define NDSR_DBERR (0x1<<4)
-#define NDSR_SBERR (0x1<<3)
-#define NDSR_WRDREQ (0x1<<2)
-#define NDSR_RDDREQ (0x1<<1)
-#define NDSR_WRCMDREQ (0x1)
-
-#define NDCB0_AUTO_RS (0x1<<25)
-#define NDCB0_CSEL (0x1<<24)
-#define NDCB0_CMD_TYPE (0x7<<21)
-#define NDCB0_NC (0x1<<20)
-#define NDCB0_DBC (0x1<<19)
-#define NDCB0_ADDR_CYC (0x7<<16)
-#define NDCB0_CMD2 (0xff<<8)
-#define NDCB0_CMD1 (0xff)
-#define MCMEM(s) MCMEM0
-#define MCATT(s) MCATT0
-#define MCIO(s) MCIO0
-#define MECR_CIT (1 << 1)/* Card Is There: 0 -> no card, 1 -> card inserted */
-
-/* Maximum values for NAND Interface Timing Registers in DFC clock
- * periods */
-#define DFC_MAX_tCH 7
-#define DFC_MAX_tCS 7
-#define DFC_MAX_tWH 7
-#define DFC_MAX_tWP 7
-#define DFC_MAX_tRH 7
-#define DFC_MAX_tRP 15
-#define DFC_MAX_tR 65535
-#define DFC_MAX_tWHR 15
-#define DFC_MAX_tAR 15
-
-#define DFC_CLOCK 104 /* DFC Clock is 104 MHz */
-#define DFC_CLK_PER_US DFC_CLOCK/1000 /* clock period in ns */
-
#else /* CONFIG_CPU_MONAHANS */
#define MEMC_BASE __REG(0x48000000) /* Base of Memory Controller */
diff --git a/include/asm-arm/arch-pxa/pxa3xx_nand.h b/include/asm-arm/arch-pxa/pxa3xx_nand.h
new file mode 100644
index 0000000..078dd02
--- /dev/null
+++ b/include/asm-arm/arch-pxa/pxa3xx_nand.h
@@ -0,0 +1,67 @@
+#ifndef __ASM_ARCH_PXA3XX_NAND_H
+#define __ASM_ARCH_PXA3XX_NAND_H
+
+#include <linux/mtd/mtd.h>
+#ifndef __U_BOOT__
+#include <linux/mtd/partitions.h>
+#endif /* __U_BOOT__ */
+
+struct pxa3xx_nand_timing {
+ unsigned int tCH; /* Enable signal hold time */
+ unsigned int tCS; /* Enable signal setup time */
+ unsigned int tWH; /* ND_nWE high duration */
+ unsigned int tWP; /* ND_nWE pulse time */
+ unsigned int tRH; /* ND_nRE high duration */
+ unsigned int tRP; /* ND_nRE pulse width */
+ unsigned int tR; /* ND_nWE high to ND_nRE low for read */
+ unsigned int tWHR; /* ND_nWE high to ND_nRE low for status read */
+ unsigned int tAR; /* ND_ALE low to ND_nRE low delay */
+};
+
+struct pxa3xx_nand_cmdset {
+ uint16_t read1;
+ uint16_t read2;
+ uint16_t program;
+ uint16_t read_status;
+ uint16_t read_id;
+ uint16_t erase;
+ uint16_t reset;
+ uint16_t lock;
+ uint16_t unlock;
+ uint16_t lock_status;
+};
+
+struct pxa3xx_nand_flash {
+ const struct pxa3xx_nand_timing *timing; /* NAND Flash timing */
+ const struct pxa3xx_nand_cmdset *cmdset;
+
+ uint32_t page_per_block;/* Pages per block (PG_PER_BLK) */
+ uint32_t page_size; /* Page size in bytes (PAGE_SZ) */
+ uint32_t flash_width; /* Width of Flash memory (DWIDTH_M) */
+ uint32_t dfc_width; /* Width of flash controller(DWIDTH_C) */
+ uint32_t num_blocks; /* Number of physical blocks in Flash */
+ uint32_t chip_id;
+};
+
+#ifndef __U_BOOT__
+struct pxa3xx_nand_platform_data {
+
+ /* the data flash bus is shared between the Static Memory
+ * Controller and the Data Flash Controller, the arbiter
+ * controls the ownership of the bus
+ */
+ int enable_arbiter;
+
+ /* allow platform code to keep OBM/bootloader defined NFC config */
+ int keep_config;
+
+ const struct mtd_partition *parts;
+ unsigned int nr_parts;
+
+ const struct pxa3xx_nand_flash * flash;
+ size_t num_flash;
+};
+
+extern void pxa3xx_set_nand_info(struct pxa3xx_nand_platform_data *info);
+#endif /* __U_BOOT__ */
+#endif /* __ASM_ARCH_PXA3XX_NAND_H */
--
1.6.0.4
^ permalink raw reply related [flat|nested] 7+ messages in thread* [U-Boot] [PATCH 2/3] delta: use new generic NAND controller driver
2009-12-24 3:29 [U-Boot] [PATCH 0/3] Monahan/PXA3xx: integrate Linux NAND controller driver Marcel Ziswiler
2009-12-24 3:33 ` [U-Boot] [PATCH 1/3] " Marcel Ziswiler
@ 2009-12-24 3:36 ` Marcel Ziswiler
2009-12-24 3:38 ` [U-Boot] [PATCH 3/3] zylonite: " Marcel Ziswiler
2 siblings, 0 replies; 7+ messages in thread
From: Marcel Ziswiler @ 2009-12-24 3:36 UTC (permalink / raw)
To: u-boot
This patch adapts the Monahan/PXA3xx board delta to use the new generic NAND
controller driver.
Signed-off-by: Marcel Ziswiler <marcel.ziswiler@noser.com>
---
board/delta/Makefile | 2 +-
board/delta/delta.c | 50 +++++
board/delta/nand.c | 554 -----------------------------------------------
include/configs/delta.h | 32 +--
4 files changed, 59 insertions(+), 579 deletions(-)
delete mode 100644 board/delta/nand.c
diff --git a/board/delta/Makefile b/board/delta/Makefile
index 648e00c..9b5545d 100644
--- a/board/delta/Makefile
+++ b/board/delta/Makefile
@@ -26,7 +26,7 @@ include $(TOPDIR)/config.mk
LIB = $(obj)lib$(BOARD).a
-COBJS := delta.o nand.o
+COBJS := delta.o
SOBJS := lowlevel_init.o
SRCS := $(SOBJS:.o=.S) $(COBJS:.o=.c)
diff --git a/board/delta/delta.c b/board/delta/delta.c
index a294213..680f846 100644
--- a/board/delta/delta.c
+++ b/board/delta/delta.c
@@ -28,9 +28,12 @@
#include <malloc.h>
#include <command.h>
#include <asm/arch/pxa-regs.h>
+#include <nand.h>
DECLARE_GLOBAL_DATA_PTR;
+extern int pxa3xx_nand_probe(struct nand_chip *chip);
+
/* ------------------------------------------------------------------------- */
static void init_DA9030(void);
@@ -96,6 +99,53 @@ int board_late_init(void)
}
/*
+ * Board-specific NAND initialization.
+ */
+int board_nand_init(struct nand_chip *chip)
+{
+ /* no idea what is done here, see zylonite.c */
+ GPIO4 = 0x1;
+
+ /* Setting up DFC GPIOs. */
+
+ /* ND_IO<15:0> alternate function 1 */
+ DF_IO0 = 0x00000001;
+ DF_IO1 = 0x00000001;
+ DF_IO2 = 0x00000001;
+ DF_IO3 = 0x00000001;
+ DF_IO4 = 0x00000001;
+ DF_IO5 = 0x00000001;
+ DF_IO6 = 0x00000001;
+ DF_IO7 = 0x00000001;
+ DF_IO8 = 0x00000001;
+ DF_IO9 = 0x00000001;
+ DF_IO10 = 0x00000001;
+ DF_IO11 = 0x00000001;
+ DF_IO12 = 0x00000001;
+ DF_IO13 = 0x00000001;
+ DF_IO14 = 0x00000001;
+ DF_IO15 = 0x00000001;
+ /* ND_nCS0 and ND_nCS1 alternate function 1 */
+ DF_nCS0 = 0x00000001;
+ DF_nCS1 = 0x00000001;
+ /* ND_nWE and ND_nRE alternate function 1, data on pad sent during
+ D1-D3 low power mode, slow 10 mA drive */
+ DF_nWE = 0x00001901;
+ DF_nRE = 0x00001901;
+ /* ND_CLE alternate function 0 */
+ DF_CLE_nOE = 0x00001900;
+ /* ND_ALE alternate function 1, data on pad sent during
+ D1-D3 low power mode, slow 10 mA drive */
+ DF_ALE_nWE1 = 0x00001901;
+ DF_ALE_nWE2 = 0x00001901;
+ /* ND_RnB alternate function 0, data on pad sent during
+ D1-D3 low power mode, slow 10 mA drive */
+ DF_INT_RnB = 0x00001900;
+
+ return pxa3xx_nand_probe(chip);
+}
+
+/*
* Magic Key Handling, mainly copied from board/lwmon/lwmon.c
*/
#ifdef DELTA_CHECK_KEYBD
diff --git a/board/delta/nand.c b/board/delta/nand.c
deleted file mode 100644
index 85a6ba2..0000000
--- a/board/delta/nand.c
+++ /dev/null
@@ -1,554 +0,0 @@
-/*
- * (C) Copyright 2006 DENX Software Engineering
- *
- * See file CREDITS for list of people who contributed to this
- * project.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
- * MA 02111-1307 USA
- */
-
-#include <common.h>
-
-#if defined(CONFIG_CMD_NAND)
-
-#include <nand.h>
-#include <asm/arch/pxa-regs.h>
-
-#ifdef CONFIG_SYS_DFC_DEBUG1
-# define DFC_DEBUG1(fmt, args...) printf(fmt, ##args)
-#else
-# define DFC_DEBUG1(fmt, args...)
-#endif
-
-#ifdef CONFIG_SYS_DFC_DEBUG2
-# define DFC_DEBUG2(fmt, args...) printf(fmt, ##args)
-#else
-# define DFC_DEBUG2(fmt, args...)
-#endif
-
-#ifdef CONFIG_SYS_DFC_DEBUG3
-# define DFC_DEBUG3(fmt, args...) printf(fmt, ##args)
-#else
-# define DFC_DEBUG3(fmt, args...)
-#endif
-
-/* These really don't belong here, as they are specific to the NAND Model */
-static uint8_t scan_ff_pattern[] = { 0xff, 0xff };
-
-static struct nand_bbt_descr delta_bbt_descr = {
- .options = 0,
- .offs = 0,
- .len = 2,
- .pattern = scan_ff_pattern
-};
-
-static struct nand_ecclayout delta_oob = {
- .eccbytes = 6,
- .eccpos = {2, 3, 4, 5, 6, 7},
- .oobfree = { {8, 2}, {12, 4} }
-};
-
-/*
- * not required for Monahans DFC
- */
-static void dfc_hwcontrol(struct mtd_info *mtd, int cmd, unsigned int ctrl)
-{
- return;
-}
-
-#if 0
-/* read device ready pin */
-static int dfc_device_ready(struct mtd_info *mtdinfo)
-{
- if(NDSR & NDSR_RDY)
- return 1;
- else
- return 0;
- return 0;
-}
-#endif
-
-/*
- * Write buf to the DFC Controller Data Buffer
- */
-static void dfc_write_buf(struct mtd_info *mtd, const u_char *buf, int len)
-{
- unsigned long bytes_multi = len & 0xfffffffc;
- unsigned long rest = len & 0x3;
- unsigned long *long_buf;
- int i;
-
- DFC_DEBUG2("dfc_write_buf: writing %d bytes starting with 0x%x.\n", len, *((unsigned long*) buf));
- if(bytes_multi) {
- for(i=0; i<bytes_multi; i+=4) {
- long_buf = (unsigned long*) &buf[i];
- NDDB = *long_buf;
- }
- }
- if(rest) {
- printf("dfc_write_buf: ERROR, writing non 4-byte aligned data.\n");
- }
- return;
-}
-
-
-static void dfc_read_buf(struct mtd_info *mtd, u_char* const buf, int len)
-{
- int i=0, j;
-
- /* we have to be carefull not to overflow the buffer if len is
- * not a multiple of 4 */
- unsigned long bytes_multi = len & 0xfffffffc;
- unsigned long rest = len & 0x3;
- unsigned long *long_buf;
-
- DFC_DEBUG3("dfc_read_buf: reading %d bytes.\n", len);
- /* if there are any, first copy multiple of 4 bytes */
- if(bytes_multi) {
- for(i=0; i<bytes_multi; i+=4) {
- long_buf = (unsigned long*) &buf[i];
- *long_buf = NDDB;
- }
- }
-
- /* ...then the rest */
- if(rest) {
- unsigned long rest_data = NDDB;
- for(j=0;j<rest; j++)
- buf[i+j] = (u_char) ((rest_data>>j) & 0xff);
- }
-
- return;
-}
-
-/*
- * read a word. Not implemented as not used in NAND code.
- */
-static u16 dfc_read_word(struct mtd_info *mtd)
-{
- printf("dfc_read_word: UNIMPLEMENTED.\n");
- return 0;
-}
-
-/* global var, too bad: mk at tbd: move to ->priv pointer */
-static unsigned long read_buf = 0;
-static int bytes_read = -1;
-
-/*
- * read a byte from NDDB Because we can only read 4 bytes from NDDB at
- * a time, we buffer the remaining bytes. The buffer is reset when a
- * new command is sent to the chip.
- *
- * WARNING:
- * This function is currently only used to read status and id
- * bytes. For these commands always 8 bytes need to be read from
- * NDDB. So we read and discard these bytes right now. In case this
- * function is used for anything else in the future, we must check
- * what was the last command issued and read the appropriate amount of
- * bytes respectively.
- */
-static u_char dfc_read_byte(struct mtd_info *mtd)
-{
- unsigned char byte;
- unsigned long dummy;
-
- if(bytes_read < 0) {
- read_buf = NDDB;
- dummy = NDDB;
- bytes_read = 0;
- }
- byte = (unsigned char) (read_buf>>(8 * bytes_read++));
- if(bytes_read >= 4)
- bytes_read = -1;
-
- DFC_DEBUG2("dfc_read_byte: byte %u: 0x%x of (0x%x).\n", bytes_read - 1, byte, read_buf);
- return byte;
-}
-
-/* calculate delta between OSCR values start and now */
-static unsigned long get_delta(unsigned long start)
-{
- unsigned long cur = OSCR;
-
- if(cur < start) /* OSCR overflowed */
- return (cur + (start^0xffffffff));
- else
- return (cur - start);
-}
-
-/* delay function, this doesn't belong here */
-static void wait_us(unsigned long us)
-{
- unsigned long start = OSCR;
- us = DIV_ROUND_UP(us * OSCR_CLK_FREQ, 1000);
-
- while (get_delta(start) < us) {
- /* do nothing */
- }
-}
-
-static void dfc_clear_nddb(void)
-{
- NDCR &= ~NDCR_ND_RUN;
- wait_us(CONFIG_SYS_NAND_OTHER_TO);
-}
-
-/* wait_event with timeout */
-static unsigned long dfc_wait_event(unsigned long event)
-{
- unsigned long ndsr, timeout, start = OSCR;
-
- if(!event)
- return 0xff000000;
- else if(event & (NDSR_CS0_CMDD | NDSR_CS0_BBD))
- timeout = DIV_ROUND_UP(CONFIG_SYS_NAND_PROG_ERASE_TO
- * OSCR_CLK_FREQ, 1000);
- else
- timeout = DIV_ROUND_UP(CONFIG_SYS_NAND_OTHER_TO
- * OSCR_CLK_FREQ, 1000);
-
- while(1) {
- ndsr = NDSR;
- if(ndsr & event) {
- NDSR |= event;
- break;
- }
- if(get_delta(start) > timeout) {
- DFC_DEBUG1("dfc_wait_event: TIMEOUT waiting for event: 0x%lx.\n", event);
- return 0xff000000;
- }
-
- }
- return ndsr;
-}
-
-/* we don't always wan't to do this */
-static void dfc_new_cmd(void)
-{
- int retry = 0;
- unsigned long status;
-
- while(retry++ <= CONFIG_SYS_NAND_SENDCMD_RETRY) {
- /* Clear NDSR */
- NDSR = 0xFFF;
-
- /* set NDCR[NDRUN] */
- if(!(NDCR & NDCR_ND_RUN))
- NDCR |= NDCR_ND_RUN;
-
- status = dfc_wait_event(NDSR_WRCMDREQ);
-
- if(status & NDSR_WRCMDREQ)
- return;
-
- DFC_DEBUG2("dfc_new_cmd: FAILED to get WRITECMDREQ, retry: %d.\n", retry);
- dfc_clear_nddb();
- }
- DFC_DEBUG1("dfc_new_cmd: giving up after %d retries.\n", retry);
-}
-
-/* this function is called after Programm and Erase Operations to
- * check for success or failure */
-static int dfc_wait(struct mtd_info *mtd, struct nand_chip *this)
-{
- unsigned long ndsr=0, event=0;
- int state = this->state;
-
- if(state == FL_WRITING) {
- event = NDSR_CS0_CMDD | NDSR_CS0_BBD;
- } else if(state == FL_ERASING) {
- event = NDSR_CS0_CMDD | NDSR_CS0_BBD;
- }
-
- ndsr = dfc_wait_event(event);
-
- if((ndsr & NDSR_CS0_BBD) || (ndsr & 0xff000000))
- return(0x1); /* Status Read error */
- return 0;
-}
-
-/* cmdfunc send commands to the DFC */
-static void dfc_cmdfunc(struct mtd_info *mtd, unsigned command,
- int column, int page_addr)
-{
- /* register struct nand_chip *this = mtd->priv; */
- unsigned long ndcb0=0, ndcb1=0, ndcb2=0, event=0;
-
- /* clear the ugly byte read buffer */
- bytes_read = -1;
- read_buf = 0;
-
- switch (command) {
- case NAND_CMD_READ0:
- DFC_DEBUG3("dfc_cmdfunc: NAND_CMD_READ0, page_addr: 0x%x, column: 0x%x.\n", page_addr, (column>>1));
- dfc_new_cmd();
- ndcb0 = (NAND_CMD_READ0 | (4<<16));
- column >>= 1; /* adjust for 16 bit bus */
- ndcb1 = (((column>>1) & 0xff) |
- ((page_addr<<8) & 0xff00) |
- ((page_addr<<8) & 0xff0000) |
- ((page_addr<<8) & 0xff000000)); /* make this 0x01000000 ? */
- event = NDSR_RDDREQ;
- goto write_cmd;
- case NAND_CMD_READ1:
- DFC_DEBUG2("dfc_cmdfunc: NAND_CMD_READ1 unimplemented!\n");
- goto end;
- case NAND_CMD_READOOB:
- DFC_DEBUG1("dfc_cmdfunc: NAND_CMD_READOOB unimplemented!\n");
- goto end;
- case NAND_CMD_READID:
- dfc_new_cmd();
- DFC_DEBUG2("dfc_cmdfunc: NAND_CMD_READID.\n");
- ndcb0 = (NAND_CMD_READID | (3 << 21) | (1 << 16)); /* addr cycles*/
- event = NDSR_RDDREQ;
- goto write_cmd;
- case NAND_CMD_PAGEPROG:
- /* sent as a multicommand in NAND_CMD_SEQIN */
- DFC_DEBUG2("dfc_cmdfunc: NAND_CMD_PAGEPROG empty due to multicmd.\n");
- goto end;
- case NAND_CMD_ERASE1:
- DFC_DEBUG2("dfc_cmdfunc: NAND_CMD_ERASE1, page_addr: 0x%x, column: 0x%x.\n", page_addr, (column>>1));
- dfc_new_cmd();
- ndcb0 = (0xd060 | (1<<25) | (2<<21) | (1<<19) | (3<<16));
- ndcb1 = (page_addr & 0x00ffffff);
- goto write_cmd;
- case NAND_CMD_ERASE2:
- DFC_DEBUG2("dfc_cmdfunc: NAND_CMD_ERASE2 empty due to multicmd.\n");
- goto end;
- case NAND_CMD_SEQIN:
- /* send PAGE_PROG command(0x1080) */
- dfc_new_cmd();
- DFC_DEBUG2("dfc_cmdfunc: NAND_CMD_SEQIN/PAGE_PROG, page_addr: 0x%x, column: 0x%x.\n", page_addr, (column>>1));
- ndcb0 = (0x1080 | (1<<25) | (1<<21) | (1<<19) | (4<<16));
- column >>= 1; /* adjust for 16 bit bus */
- ndcb1 = (((column>>1) & 0xff) |
- ((page_addr<<8) & 0xff00) |
- ((page_addr<<8) & 0xff0000) |
- ((page_addr<<8) & 0xff000000)); /* make this 0x01000000 ? */
- event = NDSR_WRDREQ;
- goto write_cmd;
- case NAND_CMD_STATUS:
- DFC_DEBUG2("dfc_cmdfunc: NAND_CMD_STATUS.\n");
- dfc_new_cmd();
- ndcb0 = NAND_CMD_STATUS | (4<<21);
- event = NDSR_RDDREQ;
- goto write_cmd;
- case NAND_CMD_RESET:
- DFC_DEBUG2("dfc_cmdfunc: NAND_CMD_RESET.\n");
- ndcb0 = NAND_CMD_RESET | (5<<21);
- event = NDSR_CS0_CMDD;
- goto write_cmd;
- default:
- printk("dfc_cmdfunc: error, unsupported command.\n");
- goto end;
- }
-
- write_cmd:
- NDCB0 = ndcb0;
- NDCB0 = ndcb1;
- NDCB0 = ndcb2;
-
- /* wait_event: */
- dfc_wait_event(event);
- end:
- return;
-}
-
-static void dfc_gpio_init(void)
-{
- DFC_DEBUG2("Setting up DFC GPIO's.\n");
-
- /* no idea what is done here, see zylonite.c */
- GPIO4 = 0x1;
-
- DF_ALE_WE1 = 0x00000001;
- DF_ALE_WE2 = 0x00000001;
- DF_nCS0 = 0x00000001;
- DF_nCS1 = 0x00000001;
- DF_nWE = 0x00000001;
- DF_nRE = 0x00000001;
- DF_IO0 = 0x00000001;
- DF_IO8 = 0x00000001;
- DF_IO1 = 0x00000001;
- DF_IO9 = 0x00000001;
- DF_IO2 = 0x00000001;
- DF_IO10 = 0x00000001;
- DF_IO3 = 0x00000001;
- DF_IO11 = 0x00000001;
- DF_IO4 = 0x00000001;
- DF_IO12 = 0x00000001;
- DF_IO5 = 0x00000001;
- DF_IO13 = 0x00000001;
- DF_IO6 = 0x00000001;
- DF_IO14 = 0x00000001;
- DF_IO7 = 0x00000001;
- DF_IO15 = 0x00000001;
-
- DF_nWE = 0x1901;
- DF_nRE = 0x1901;
- DF_CLE_NOE = 0x1900;
- DF_ALE_WE1 = 0x1901;
- DF_INT_RnB = 0x1900;
-}
-
-/*
- * Board-specific NAND initialization. The following members of the
- * argument are board-specific (per include/linux/mtd/nand_new.h):
- * - IO_ADDR_R?: address to read the 8 I/O lines of the flash device
- * - IO_ADDR_W?: address to write the 8 I/O lines of the flash device
- * - hwcontrol: hardwarespecific function for accesing control-lines
- * - dev_ready: hardwarespecific function for accesing device ready/busy line
- * - enable_hwecc?: function to enable (reset) hardware ecc generator. Must
- * only be provided if a hardware ECC is available
- * - ecc.mode: mode of ecc, see defines
- * - chip_delay: chip dependent delay for transfering data from array to
- * read regs (tR)
- * - options: various chip options. They can partly be set to inform
- * nand_scan about special functionality. See the defines for further
- * explanation
- * Members with a "?" were not set in the merged testing-NAND branch,
- * so they are not set here either.
- */
-int board_nand_init(struct nand_chip *nand)
-{
- unsigned long tCH, tCS, tWH, tWP, tRH, tRP, tRP_high, tR, tWHR, tAR;
-
- /* set up GPIO Control Registers */
- dfc_gpio_init();
-
- /* turn on the NAND Controller Clock (104 MHz @ D0) */
- CKENA |= (CKENA_4_NAND | CKENA_9_SMC);
-
-#undef CONFIG_SYS_TIMING_TIGHT
-#ifndef CONFIG_SYS_TIMING_TIGHT
- tCH = MIN(((unsigned long) (NAND_TIMING_tCH * DFC_CLK_PER_US) + 1),
- DFC_MAX_tCH);
- tCS = MIN(((unsigned long) (NAND_TIMING_tCS * DFC_CLK_PER_US) + 1),
- DFC_MAX_tCS);
- tWH = MIN(((unsigned long) (NAND_TIMING_tWH * DFC_CLK_PER_US) + 1),
- DFC_MAX_tWH);
- tWP = MIN(((unsigned long) (NAND_TIMING_tWP * DFC_CLK_PER_US) + 1),
- DFC_MAX_tWP);
- tRH = MIN(((unsigned long) (NAND_TIMING_tRH * DFC_CLK_PER_US) + 1),
- DFC_MAX_tRH);
- tRP = MIN(((unsigned long) (NAND_TIMING_tRP * DFC_CLK_PER_US) + 1),
- DFC_MAX_tRP);
- tR = MIN(((unsigned long) (NAND_TIMING_tR * DFC_CLK_PER_US) + 1),
- DFC_MAX_tR);
- tWHR = MIN(((unsigned long) (NAND_TIMING_tWHR * DFC_CLK_PER_US) + 1),
- DFC_MAX_tWHR);
- tAR = MIN(((unsigned long) (NAND_TIMING_tAR * DFC_CLK_PER_US) + 1),
- DFC_MAX_tAR);
-#else /* this is the tight timing */
-
- tCH = MIN(((unsigned long) (NAND_TIMING_tCH * DFC_CLK_PER_US)),
- DFC_MAX_tCH);
- tCS = MIN(((unsigned long) (NAND_TIMING_tCS * DFC_CLK_PER_US)),
- DFC_MAX_tCS);
- tWH = MIN(((unsigned long) (NAND_TIMING_tWH * DFC_CLK_PER_US)),
- DFC_MAX_tWH);
- tWP = MIN(((unsigned long) (NAND_TIMING_tWP * DFC_CLK_PER_US)),
- DFC_MAX_tWP);
- tRH = MIN(((unsigned long) (NAND_TIMING_tRH * DFC_CLK_PER_US)),
- DFC_MAX_tRH);
- tRP = MIN(((unsigned long) (NAND_TIMING_tRP * DFC_CLK_PER_US)),
- DFC_MAX_tRP);
- tR = MIN(((unsigned long) (NAND_TIMING_tR * DFC_CLK_PER_US) - tCH - 2),
- DFC_MAX_tR);
- tWHR = MIN(((unsigned long) (NAND_TIMING_tWHR * DFC_CLK_PER_US) - tCH - 2),
- DFC_MAX_tWHR);
- tAR = MIN(((unsigned long) (NAND_TIMING_tAR * DFC_CLK_PER_US) - 2),
- DFC_MAX_tAR);
-#endif /* CONFIG_SYS_TIMING_TIGHT */
-
-
- DFC_DEBUG2("tCH=%u, tCS=%u, tWH=%u, tWP=%u, tRH=%u, tRP=%u, tR=%u, tWHR=%u, tAR=%u.\n", tCH, tCS, tWH, tWP, tRH, tRP, tR, tWHR, tAR);
-
- /* tRP value is split in the register */
- if(tRP & (1 << 4)) {
- tRP_high = 1;
- tRP &= ~(1 << 4);
- } else {
- tRP_high = 0;
- }
-
- NDTR0CS0 = (tCH << 19) |
- (tCS << 16) |
- (tWH << 11) |
- (tWP << 8) |
- (tRP_high << 6) |
- (tRH << 3) |
- (tRP << 0);
-
- NDTR1CS0 = (tR << 16) |
- (tWHR << 4) |
- (tAR << 0);
-
- /* If it doesn't work (unlikely) think about:
- * - ecc enable
- * - chip select don't care
- * - read id byte count
- *
- * Intentionally enabled by not setting bits:
- * - dma (DMA_EN)
- * - page size = 512
- * - cs don't care, see if we can enable later!
- * - row address start position (after second cycle)
- * - pages per block = 32
- * - ND_RDY : clears command buffer
- */
- /* NDCR_NCSX | /\* Chip select busy don't care *\/ */
-
- NDCR = (NDCR_SPARE_EN | /* use the spare area */
- NDCR_DWIDTH_C | /* 16bit DFC data bus width */
- NDCR_DWIDTH_M | /* 16 bit Flash device data bus width */
- (2 << 16) | /* read id count = 7 ???? mk@tbd */
- NDCR_ND_ARB_EN | /* enable bus arbiter */
- NDCR_RDYM | /* flash device ready ir masked */
- NDCR_CS0_PAGEDM | /* ND_nCSx page done ir masked */
- NDCR_CS1_PAGEDM |
- NDCR_CS0_CMDDM | /* ND_CSx command done ir masked */
- NDCR_CS1_CMDDM |
- NDCR_CS0_BBDM | /* ND_CSx bad block detect ir masked */
- NDCR_CS1_BBDM |
- NDCR_DBERRM | /* double bit error ir masked */
- NDCR_SBERRM | /* single bit error ir masked */
- NDCR_WRDREQM | /* write data request ir masked */
- NDCR_RDDREQM | /* read data request ir masked */
- NDCR_WRCMDREQM); /* write command request ir masked */
-
-
- /* wait 10 us due to cmd buffer clear reset */
- /* wait(10); */
-
-
- nand->cmd_ctrl = dfc_hwcontrol;
-/* nand->dev_ready = dfc_device_ready; */
- nand->ecc.mode = NAND_ECC_SOFT;
- nand->ecc.layout = &delta_oob;
- nand->options = NAND_BUSWIDTH_16;
- nand->waitfunc = dfc_wait;
- nand->read_byte = dfc_read_byte;
- nand->read_word = dfc_read_word;
- nand->read_buf = dfc_read_buf;
- nand->write_buf = dfc_write_buf;
-
- nand->cmdfunc = dfc_cmdfunc;
- nand->badblock_pattern = &delta_bbt_descr;
- return 0;
-}
-
-#endif
diff --git a/include/configs/delta.h b/include/configs/delta.h
index 9c46c5b..cea41b5 100644
--- a/include/configs/delta.h
+++ b/include/configs/delta.h
@@ -178,7 +178,6 @@
#define CONFIG_SYS_MONAHANS_RUN_MODE_OSC_RATIO 16 /* valid values: 8, 16, 24, 31 */
#define CONFIG_SYS_MONAHANS_TURBO_RUN_MODE_RATIO 1 /* valid values: 1, 2 */
-
/* valid baudrates */
#define CONFIG_SYS_BAUDRATE_TABLE { 9600, 19200, 38400, 57600, 115200 }
@@ -220,10 +219,13 @@
/*
* NAND Flash
*/
-#define CONFIG_SYS_NAND0_BASE 0x0 /* 0x43100040 */ /* 0x10000000 */
-#undef CONFIG_SYS_NAND1_BASE
+#define CONFIG_NAND_PXA3xx
+#define CONFIG_NAND_PXA3xx_CLK 104000000UL
+#define CONFIG_NEW_NAND_CODE
+#define CONFIG_SYS_NAND_HW_ECC
+
+#define CONFIG_SYS_NAND_BASE 0x0
-#define CONFIG_SYS_NAND_BASE_LIST { CONFIG_SYS_NAND0_BASE }
#define CONFIG_SYS_MAX_NAND_DEVICE 1 /* Max number of NAND devices */
/* nand timeout values */
@@ -232,32 +234,14 @@
#define CONFIG_SYS_NAND_SENDCMD_RETRY 3
#undef NAND_ALLOW_ERASE_ALL /* Allow erasing bad blocks - don't use */
-/* NAND Timing Parameters (in ns) */
-#define NAND_TIMING_tCH 10
-#define NAND_TIMING_tCS 0
-#define NAND_TIMING_tWH 20
-#define NAND_TIMING_tWP 40
-
-#define NAND_TIMING_tRH 20
-#define NAND_TIMING_tRP 40
-
-#define NAND_TIMING_tR 11123
-#define NAND_TIMING_tWHR 100
-#define NAND_TIMING_tAR 10
-
-/* NAND debugging */
-#define CONFIG_SYS_DFC_DEBUG1 /* usefull */
-#undef CONFIG_SYS_DFC_DEBUG2 /* noisy */
-#undef CONFIG_SYS_DFC_DEBUG3 /* extremly noisy */
-
#define CONFIG_MTD_DEBUG
#define CONFIG_MTD_DEBUG_VERBOSE 1
#define CONFIG_SYS_NO_FLASH 1
-#define CONFIG_ENV_IS_IN_NAND 1
+#define CONFIG_ENV_IS_IN_NAND 1
#define CONFIG_ENV_OFFSET 0x40000
#define CONFIG_ENV_OFFSET_REDUND 0x44000
-#define CONFIG_ENV_SIZE 0x4000
+#define CONFIG_ENV_SIZE 0x4000
#endif /* __CONFIG_H */
--
1.6.0.4
^ permalink raw reply related [flat|nested] 7+ messages in thread* [U-Boot] [PATCH 3/3] zylonite: use new generic NAND controller driver
2009-12-24 3:29 [U-Boot] [PATCH 0/3] Monahan/PXA3xx: integrate Linux NAND controller driver Marcel Ziswiler
2009-12-24 3:33 ` [U-Boot] [PATCH 1/3] " Marcel Ziswiler
2009-12-24 3:36 ` [U-Boot] [PATCH 2/3] delta: use new generic " Marcel Ziswiler
@ 2009-12-24 3:38 ` Marcel Ziswiler
2 siblings, 0 replies; 7+ messages in thread
From: Marcel Ziswiler @ 2009-12-24 3:38 UTC (permalink / raw)
To: u-boot
This patch adapts the Monahan/PXA3xx board zylonite to use the new generic NAND
controller driver.
Signed-off-by: Marcel Ziswiler <marcel.ziswiler@noser.com>
---
board/zylonite/Makefile | 2 +-
board/zylonite/nand.c | 558 --------------------------------------------
board/zylonite/zylonite.c | 50 ++++
include/configs/zylonite.h | 34 +--
4 files changed, 59 insertions(+), 585 deletions(-)
delete mode 100644 board/zylonite/nand.c
diff --git a/board/zylonite/Makefile b/board/zylonite/Makefile
index 8954235..8a803f9 100644
--- a/board/zylonite/Makefile
+++ b/board/zylonite/Makefile
@@ -25,7 +25,7 @@ include $(TOPDIR)/config.mk
LIB = $(obj)lib$(BOARD).a
-COBJS := zylonite.o nand.o
+COBJS := zylonite.o
SOBJS := lowlevel_init.o
SRCS := $(SOBJS:.o=.S) $(COBJS:.o=.c)
diff --git a/board/zylonite/nand.c b/board/zylonite/nand.c
deleted file mode 100644
index 7cad1ac..0000000
--- a/board/zylonite/nand.c
+++ /dev/null
@@ -1,558 +0,0 @@
-/*
- * (C) Copyright 2006 DENX Software Engineering
- *
- * See file CREDITS for list of people who contributed to this
- * project.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
- * MA 02111-1307 USA
- */
-
-#include <common.h>
-
-#if defined(CONFIG_CMD_NAND)
-
-#include <nand.h>
-#include <asm/arch/pxa-regs.h>
-
-#ifdef CONFIG_SYS_DFC_DEBUG1
-# define DFC_DEBUG1(fmt, args...) printf(fmt, ##args)
-#else
-# define DFC_DEBUG1(fmt, args...)
-#endif
-
-#ifdef CONFIG_SYS_DFC_DEBUG2
-# define DFC_DEBUG2(fmt, args...) printf(fmt, ##args)
-#else
-# define DFC_DEBUG2(fmt, args...)
-#endif
-
-#ifdef CONFIG_SYS_DFC_DEBUG3
-# define DFC_DEBUG3(fmt, args...) printf(fmt, ##args)
-#else
-# define DFC_DEBUG3(fmt, args...)
-#endif
-
-/* These really don't belong here, as they are specific to the NAND Model */
-static uint8_t scan_ff_pattern[] = { 0xff, 0xff };
-
-static struct nand_bbt_descr delta_bbt_descr = {
- .options = 0,
- .offs = 0,
- .len = 2,
- .pattern = scan_ff_pattern
-};
-
-static struct nand_ecclayout delta_oob = {
- .eccbytes = 6,
- .eccpos = {2, 3, 4, 5, 6, 7},
- .oobfree = { {8, 2}, {12, 4} }
-};
-
-/*
- * not required for Monahans DFC
- */
-static void dfc_hwcontrol(struct mtd_info *mtd, int cmd, unsigned int ctrl)
-{
- return;
-}
-
-#if 0
-/* read device ready pin */
-static int dfc_device_ready(struct mtd_info *mtdinfo)
-{
- if(NDSR & NDSR_RDY)
- return 1;
- else
- return 0;
- return 0;
-}
-#endif
-
-/*
- * Write buf to the DFC Controller Data Buffer
- */
-static void dfc_write_buf(struct mtd_info *mtd, const u_char *buf, int len)
-{
- unsigned long bytes_multi = len & 0xfffffffc;
- unsigned long rest = len & 0x3;
- unsigned long *long_buf;
- int i;
-
- DFC_DEBUG2("dfc_write_buf: writing %d bytes starting with 0x%x.\n", len, *((unsigned long*) buf));
- if(bytes_multi) {
- for(i=0; i<bytes_multi; i+=4) {
- long_buf = (unsigned long*) &buf[i];
- NDDB = *long_buf;
- }
- }
- if(rest) {
- printf("dfc_write_buf: ERROR, writing non 4-byte aligned data.\n");
- }
- return;
-}
-
-
-/* The original:
- * static void dfc_read_buf(struct mtd_info *mtd, const u_char *buf, int len)
- *
- * Shouldn't this be "u_char * const buf" ?
- */
-static void dfc_read_buf(struct mtd_info *mtd, u_char* const buf, int len)
-{
- int i=0, j;
-
- /* we have to be carefull not to overflow the buffer if len is
- * not a multiple of 4 */
- unsigned long bytes_multi = len & 0xfffffffc;
- unsigned long rest = len & 0x3;
- unsigned long *long_buf;
-
- DFC_DEBUG3("dfc_read_buf: reading %d bytes.\n", len);
- /* if there are any, first copy multiple of 4 bytes */
- if(bytes_multi) {
- for(i=0; i<bytes_multi; i+=4) {
- long_buf = (unsigned long*) &buf[i];
- *long_buf = NDDB;
- }
- }
-
- /* ...then the rest */
- if(rest) {
- unsigned long rest_data = NDDB;
- for(j=0;j<rest; j++)
- buf[i+j] = (u_char) ((rest_data>>j) & 0xff);
- }
-
- return;
-}
-
-/*
- * read a word. Not implemented as not used in NAND code.
- */
-static u16 dfc_read_word(struct mtd_info *mtd)
-{
- printf("dfc_read_word: UNIMPLEMENTED.\n");
- return 0;
-}
-
-/* global var, too bad: mk at tbd: move to ->priv pointer */
-static unsigned long read_buf = 0;
-static int bytes_read = -1;
-
-/*
- * read a byte from NDDB Because we can only read 4 bytes from NDDB at
- * a time, we buffer the remaining bytes. The buffer is reset when a
- * new command is sent to the chip.
- *
- * WARNING:
- * This function is currently only used to read status and id
- * bytes. For these commands always 8 bytes need to be read from
- * NDDB. So we read and discard these bytes right now. In case this
- * function is used for anything else in the future, we must check
- * what was the last command issued and read the appropriate amount of
- * bytes respectively.
- */
-static u_char dfc_read_byte(struct mtd_info *mtd)
-{
- unsigned char byte;
- unsigned long dummy;
-
- if(bytes_read < 0) {
- read_buf = NDDB;
- dummy = NDDB;
- bytes_read = 0;
- }
- byte = (unsigned char) (read_buf>>(8 * bytes_read++));
- if(bytes_read >= 4)
- bytes_read = -1;
-
- DFC_DEBUG2("dfc_read_byte: byte %u: 0x%x of (0x%x).\n", bytes_read - 1, byte, read_buf);
- return byte;
-}
-
-/* calculate delta between OSCR values start and now */
-static unsigned long get_delta(unsigned long start)
-{
- unsigned long cur = OSCR;
-
- if(cur < start) /* OSCR overflowed */
- return (cur + (start^0xffffffff));
- else
- return (cur - start);
-}
-
-/* delay function, this doesn't belong here */
-static void wait_us(unsigned long us)
-{
- unsigned long start = OSCR;
- us = DIV_ROUND_UP(us * OSCR_CLK_FREQ, 1000);
-
- while (get_delta(start) < us) {
- /* do nothing */
- }
-}
-
-static void dfc_clear_nddb(void)
-{
- NDCR &= ~NDCR_ND_RUN;
- wait_us(CONFIG_SYS_NAND_OTHER_TO);
-}
-
-/* wait_event with timeout */
-static unsigned long dfc_wait_event(unsigned long event)
-{
- unsigned long ndsr, timeout, start = OSCR;
-
- if(!event)
- return 0xff000000;
- else if(event & (NDSR_CS0_CMDD | NDSR_CS0_BBD))
- timeout = DIV_ROUND_UP(CONFIG_SYS_NAND_PROG_ERASE_TO
- * OSCR_CLK_FREQ, 1000);
- else
- timeout = DIV_ROUND_UP(CONFIG_SYS_NAND_OTHER_TO
- * OSCR_CLK_FREQ, 1000);
-
- while(1) {
- ndsr = NDSR;
- if(ndsr & event) {
- NDSR |= event;
- break;
- }
- if(get_delta(start) > timeout) {
- DFC_DEBUG1("dfc_wait_event: TIMEOUT waiting for event: 0x%lx.\n", event);
- return 0xff000000;
- }
-
- }
- return ndsr;
-}
-
-/* we don't always wan't to do this */
-static void dfc_new_cmd(void)
-{
- int retry = 0;
- unsigned long status;
-
- while(retry++ <= CONFIG_SYS_NAND_SENDCMD_RETRY) {
- /* Clear NDSR */
- NDSR = 0xFFF;
-
- /* set NDCR[NDRUN] */
- if(!(NDCR & NDCR_ND_RUN))
- NDCR |= NDCR_ND_RUN;
-
- status = dfc_wait_event(NDSR_WRCMDREQ);
-
- if(status & NDSR_WRCMDREQ)
- return;
-
- DFC_DEBUG2("dfc_new_cmd: FAILED to get WRITECMDREQ, retry: %d.\n", retry);
- dfc_clear_nddb();
- }
- DFC_DEBUG1("dfc_new_cmd: giving up after %d retries.\n", retry);
-}
-
-/* this function is called after Programm and Erase Operations to
- * check for success or failure */
-static int dfc_wait(struct mtd_info *mtd, struct nand_chip *this)
-{
- unsigned long ndsr=0, event=0;
- int state = this->state;
-
- if(state == FL_WRITING) {
- event = NDSR_CS0_CMDD | NDSR_CS0_BBD;
- } else if(state == FL_ERASING) {
- event = NDSR_CS0_CMDD | NDSR_CS0_BBD;
- }
-
- ndsr = dfc_wait_event(event);
-
- if((ndsr & NDSR_CS0_BBD) || (ndsr & 0xff000000))
- return(0x1); /* Status Read error */
- return 0;
-}
-
-/* cmdfunc send commands to the DFC */
-static void dfc_cmdfunc(struct mtd_info *mtd, unsigned command,
- int column, int page_addr)
-{
- /* register struct nand_chip *this = mtd->priv; */
- unsigned long ndcb0=0, ndcb1=0, ndcb2=0, event=0;
-
- /* clear the ugly byte read buffer */
- bytes_read = -1;
- read_buf = 0;
-
- switch (command) {
- case NAND_CMD_READ0:
- DFC_DEBUG3("dfc_cmdfunc: NAND_CMD_READ0, page_addr: 0x%x, column: 0x%x.\n", page_addr, (column>>1));
- dfc_new_cmd();
- ndcb0 = (NAND_CMD_READ0 | (4<<16));
- column >>= 1; /* adjust for 16 bit bus */
- ndcb1 = (((column>>1) & 0xff) |
- ((page_addr<<8) & 0xff00) |
- ((page_addr<<8) & 0xff0000) |
- ((page_addr<<8) & 0xff000000)); /* make this 0x01000000 ? */
- event = NDSR_RDDREQ;
- goto write_cmd;
- case NAND_CMD_READ1:
- DFC_DEBUG2("dfc_cmdfunc: NAND_CMD_READ1 unimplemented!\n");
- goto end;
- case NAND_CMD_READOOB:
- DFC_DEBUG1("dfc_cmdfunc: NAND_CMD_READOOB unimplemented!\n");
- goto end;
- case NAND_CMD_READID:
- dfc_new_cmd();
- DFC_DEBUG2("dfc_cmdfunc: NAND_CMD_READID.\n");
- ndcb0 = (NAND_CMD_READID | (3 << 21) | (1 << 16)); /* addr cycles*/
- event = NDSR_RDDREQ;
- goto write_cmd;
- case NAND_CMD_PAGEPROG:
- /* sent as a multicommand in NAND_CMD_SEQIN */
- DFC_DEBUG2("dfc_cmdfunc: NAND_CMD_PAGEPROG empty due to multicmd.\n");
- goto end;
- case NAND_CMD_ERASE1:
- DFC_DEBUG2("dfc_cmdfunc: NAND_CMD_ERASE1, page_addr: 0x%x, column: 0x%x.\n", page_addr, (column>>1));
- dfc_new_cmd();
- ndcb0 = (0xd060 | (1<<25) | (2<<21) | (1<<19) | (3<<16));
- ndcb1 = (page_addr & 0x00ffffff);
- goto write_cmd;
- case NAND_CMD_ERASE2:
- DFC_DEBUG2("dfc_cmdfunc: NAND_CMD_ERASE2 empty due to multicmd.\n");
- goto end;
- case NAND_CMD_SEQIN:
- /* send PAGE_PROG command(0x1080) */
- dfc_new_cmd();
- DFC_DEBUG2("dfc_cmdfunc: NAND_CMD_SEQIN/PAGE_PROG, page_addr: 0x%x, column: 0x%x.\n", page_addr, (column>>1));
- ndcb0 = (0x1080 | (1<<25) | (1<<21) | (1<<19) | (4<<16));
- column >>= 1; /* adjust for 16 bit bus */
- ndcb1 = (((column>>1) & 0xff) |
- ((page_addr<<8) & 0xff00) |
- ((page_addr<<8) & 0xff0000) |
- ((page_addr<<8) & 0xff000000)); /* make this 0x01000000 ? */
- event = NDSR_WRDREQ;
- goto write_cmd;
- case NAND_CMD_STATUS:
- DFC_DEBUG2("dfc_cmdfunc: NAND_CMD_STATUS.\n");
- dfc_new_cmd();
- ndcb0 = NAND_CMD_STATUS | (4<<21);
- event = NDSR_RDDREQ;
- goto write_cmd;
- case NAND_CMD_RESET:
- DFC_DEBUG2("dfc_cmdfunc: NAND_CMD_RESET.\n");
- ndcb0 = NAND_CMD_RESET | (5<<21);
- event = NDSR_CS0_CMDD;
- goto write_cmd;
- default:
- printk("dfc_cmdfunc: error, unsupported command.\n");
- goto end;
- }
-
- write_cmd:
- NDCB0 = ndcb0;
- NDCB0 = ndcb1;
- NDCB0 = ndcb2;
-
- /* wait_event: */
- dfc_wait_event(event);
- end:
- return;
-}
-
-static void dfc_gpio_init(void)
-{
- DFC_DEBUG2("Setting up DFC GPIO's.\n");
-
- /* no idea what is done here, see zylonite.c */
- GPIO4 = 0x1;
-
- DF_ALE_WE1 = 0x00000001;
- DF_ALE_WE2 = 0x00000001;
- DF_nCS0 = 0x00000001;
- DF_nCS1 = 0x00000001;
- DF_nWE = 0x00000001;
- DF_nRE = 0x00000001;
- DF_IO0 = 0x00000001;
- DF_IO8 = 0x00000001;
- DF_IO1 = 0x00000001;
- DF_IO9 = 0x00000001;
- DF_IO2 = 0x00000001;
- DF_IO10 = 0x00000001;
- DF_IO3 = 0x00000001;
- DF_IO11 = 0x00000001;
- DF_IO4 = 0x00000001;
- DF_IO12 = 0x00000001;
- DF_IO5 = 0x00000001;
- DF_IO13 = 0x00000001;
- DF_IO6 = 0x00000001;
- DF_IO14 = 0x00000001;
- DF_IO7 = 0x00000001;
- DF_IO15 = 0x00000001;
-
- DF_nWE = 0x1901;
- DF_nRE = 0x1901;
- DF_CLE_NOE = 0x1900;
- DF_ALE_WE1 = 0x1901;
- DF_INT_RnB = 0x1900;
-}
-
-/*
- * Board-specific NAND initialization. The following members of the
- * argument are board-specific (per include/linux/mtd/nand_new.h):
- * - IO_ADDR_R?: address to read the 8 I/O lines of the flash device
- * - IO_ADDR_W?: address to write the 8 I/O lines of the flash device
- * - cmd_ctrl: hardwarespecific function for accesing control-lines
- * - dev_ready: hardwarespecific function for accesing device ready/busy line
- * - enable_hwecc?: function to enable (reset) hardware ecc generator. Must
- * only be provided if a hardware ECC is available
- * - ecc.mode: mode of ecc, see defines
- * - chip_delay: chip dependent delay for transfering data from array to
- * read regs (tR)
- * - options: various chip options. They can partly be set to inform
- * nand_scan about special functionality. See the defines for further
- * explanation
- * Members with a "?" were not set in the merged testing-NAND branch,
- * so they are not set here either.
- */
-int board_nand_init(struct nand_chip *nand)
-{
- unsigned long tCH, tCS, tWH, tWP, tRH, tRP, tRP_high, tR, tWHR, tAR;
-
- /* set up GPIO Control Registers */
- dfc_gpio_init();
-
- /* turn on the NAND Controller Clock (104 MHz @ D0) */
- CKENA |= (CKENA_4_NAND | CKENA_9_SMC);
-
-#undef CONFIG_SYS_TIMING_TIGHT
-#ifndef CONFIG_SYS_TIMING_TIGHT
- tCH = MIN(((unsigned long) (NAND_TIMING_tCH * DFC_CLK_PER_US) + 1),
- DFC_MAX_tCH);
- tCS = MIN(((unsigned long) (NAND_TIMING_tCS * DFC_CLK_PER_US) + 1),
- DFC_MAX_tCS);
- tWH = MIN(((unsigned long) (NAND_TIMING_tWH * DFC_CLK_PER_US) + 1),
- DFC_MAX_tWH);
- tWP = MIN(((unsigned long) (NAND_TIMING_tWP * DFC_CLK_PER_US) + 1),
- DFC_MAX_tWP);
- tRH = MIN(((unsigned long) (NAND_TIMING_tRH * DFC_CLK_PER_US) + 1),
- DFC_MAX_tRH);
- tRP = MIN(((unsigned long) (NAND_TIMING_tRP * DFC_CLK_PER_US) + 1),
- DFC_MAX_tRP);
- tR = MIN(((unsigned long) (NAND_TIMING_tR * DFC_CLK_PER_US) + 1),
- DFC_MAX_tR);
- tWHR = MIN(((unsigned long) (NAND_TIMING_tWHR * DFC_CLK_PER_US) + 1),
- DFC_MAX_tWHR);
- tAR = MIN(((unsigned long) (NAND_TIMING_tAR * DFC_CLK_PER_US) + 1),
- DFC_MAX_tAR);
-#else /* this is the tight timing */
-
- tCH = MIN(((unsigned long) (NAND_TIMING_tCH * DFC_CLK_PER_US)),
- DFC_MAX_tCH);
- tCS = MIN(((unsigned long) (NAND_TIMING_tCS * DFC_CLK_PER_US)),
- DFC_MAX_tCS);
- tWH = MIN(((unsigned long) (NAND_TIMING_tWH * DFC_CLK_PER_US)),
- DFC_MAX_tWH);
- tWP = MIN(((unsigned long) (NAND_TIMING_tWP * DFC_CLK_PER_US)),
- DFC_MAX_tWP);
- tRH = MIN(((unsigned long) (NAND_TIMING_tRH * DFC_CLK_PER_US)),
- DFC_MAX_tRH);
- tRP = MIN(((unsigned long) (NAND_TIMING_tRP * DFC_CLK_PER_US)),
- DFC_MAX_tRP);
- tR = MIN(((unsigned long) (NAND_TIMING_tR * DFC_CLK_PER_US) - tCH - 2),
- DFC_MAX_tR);
- tWHR = MIN(((unsigned long) (NAND_TIMING_tWHR * DFC_CLK_PER_US) - tCH - 2),
- DFC_MAX_tWHR);
- tAR = MIN(((unsigned long) (NAND_TIMING_tAR * DFC_CLK_PER_US) - 2),
- DFC_MAX_tAR);
-#endif /* CONFIG_SYS_TIMING_TIGHT */
-
-
- DFC_DEBUG2("tCH=%u, tCS=%u, tWH=%u, tWP=%u, tRH=%u, tRP=%u, tR=%u, tWHR=%u, tAR=%u.\n", tCH, tCS, tWH, tWP, tRH, tRP, tR, tWHR, tAR);
-
- /* tRP value is split in the register */
- if(tRP & (1 << 4)) {
- tRP_high = 1;
- tRP &= ~(1 << 4);
- } else {
- tRP_high = 0;
- }
-
- NDTR0CS0 = (tCH << 19) |
- (tCS << 16) |
- (tWH << 11) |
- (tWP << 8) |
- (tRP_high << 6) |
- (tRH << 3) |
- (tRP << 0);
-
- NDTR1CS0 = (tR << 16) |
- (tWHR << 4) |
- (tAR << 0);
-
- /* If it doesn't work (unlikely) think about:
- * - ecc enable
- * - chip select don't care
- * - read id byte count
- *
- * Intentionally enabled by not setting bits:
- * - dma (DMA_EN)
- * - page size = 512
- * - cs don't care, see if we can enable later!
- * - row address start position (after second cycle)
- * - pages per block = 32
- * - ND_RDY : clears command buffer
- */
- /* NDCR_NCSX | /\* Chip select busy don't care *\/ */
-
- NDCR = (NDCR_SPARE_EN | /* use the spare area */
- NDCR_DWIDTH_C | /* 16bit DFC data bus width */
- NDCR_DWIDTH_M | /* 16 bit Flash device data bus width */
- (2 << 16) | /* read id count = 7 ???? mk@tbd */
- NDCR_ND_ARB_EN | /* enable bus arbiter */
- NDCR_RDYM | /* flash device ready ir masked */
- NDCR_CS0_PAGEDM | /* ND_nCSx page done ir masked */
- NDCR_CS1_PAGEDM |
- NDCR_CS0_CMDDM | /* ND_CSx command done ir masked */
- NDCR_CS1_CMDDM |
- NDCR_CS0_BBDM | /* ND_CSx bad block detect ir masked */
- NDCR_CS1_BBDM |
- NDCR_DBERRM | /* double bit error ir masked */
- NDCR_SBERRM | /* single bit error ir masked */
- NDCR_WRDREQM | /* write data request ir masked */
- NDCR_RDDREQM | /* read data request ir masked */
- NDCR_WRCMDREQM); /* write command request ir masked */
-
-
- /* wait 10 us due to cmd buffer clear reset */
- /* wait(10); */
-
- nand->cmd_ctrl = dfc_hwcontrol;
-/* nand->dev_ready = dfc_device_ready; */
- nand->ecc.mode = NAND_ECC_SOFT;
- nand->ecc.layout = &delta_oob;
- nand->options = NAND_BUSWIDTH_16;
- nand->waitfunc = dfc_wait;
- nand->read_byte = dfc_read_byte;
- nand->read_word = dfc_read_word;
- nand->read_buf = dfc_read_buf;
- nand->write_buf = dfc_write_buf;
-
- nand->cmdfunc = dfc_cmdfunc;
- nand->badblock_pattern = &delta_bbt_descr;
- return 0;
-}
-
-#endif
diff --git a/board/zylonite/zylonite.c b/board/zylonite/zylonite.c
index 749a40f..8243dc9 100644
--- a/board/zylonite/zylonite.c
+++ b/board/zylonite/zylonite.c
@@ -27,9 +27,13 @@
#include <common.h>
#include <netdev.h>
+#include <asm/arch/pxa-regs.h>
+#include <nand.h>
DECLARE_GLOBAL_DATA_PTR;
+extern int pxa3xx_nand_probe(struct nand_chip *chip);
+
/*
* Miscelaneous platform dependent initialisations
*/
@@ -55,6 +59,52 @@ int board_late_init(void)
return 0;
}
+/*
+ * Board-specific NAND initialization.
+ */
+int board_nand_init(struct nand_chip *chip)
+{
+ /* no idea what is done here, see zylonite.c */
+ GPIO4 = 0x1;
+
+ /* Setting up DFC GPIOs. */
+
+ /* ND_IO<15:0> alternate function 1 */
+ DF_IO0 = 0x00000001;
+ DF_IO1 = 0x00000001;
+ DF_IO2 = 0x00000001;
+ DF_IO3 = 0x00000001;
+ DF_IO4 = 0x00000001;
+ DF_IO5 = 0x00000001;
+ DF_IO6 = 0x00000001;
+ DF_IO7 = 0x00000001;
+ DF_IO8 = 0x00000001;
+ DF_IO9 = 0x00000001;
+ DF_IO10 = 0x00000001;
+ DF_IO11 = 0x00000001;
+ DF_IO12 = 0x00000001;
+ DF_IO13 = 0x00000001;
+ DF_IO14 = 0x00000001;
+ DF_IO15 = 0x00000001;
+ /* ND_nCS0 and ND_nCS1 alternate function 1 */
+ DF_nCS0 = 0x00000001;
+ DF_nCS1 = 0x00000001;
+ /* ND_nWE and ND_nRE alternate function 1, data on pad sent during
+ D1-D3 low power mode, slow 10 mA drive */
+ DF_nWE = 0x00001901;
+ DF_nRE = 0x00001901;
+ /* ND_CLE alternate function 0 */
+ DF_CLE_nOE = 0x00001900;
+ /* ND_ALE alternate function 1, data on pad sent during
+ D1-D3 low power mode, slow 10 mA drive */
+ DF_ALE_nWE1 = 0x00001901;
+ DF_ALE_nWE2 = 0x00001901;
+ /* ND_RnB alternate function 0, data on pad sent during
+ D1-D3 low power mode, slow 10 mA drive */
+ DF_INT_RnB = 0x00001900;
+
+ return pxa3xx_nand_probe(chip);
+}
int dram_init (void)
{
diff --git a/include/configs/zylonite.h b/include/configs/zylonite.h
index d0fc138..42b0d4a 100644
--- a/include/configs/zylonite.h
+++ b/include/configs/zylonite.h
@@ -59,7 +59,6 @@
/*
* Hardware drivers
*/
-
#undef TURN_ON_ETHERNET
#ifdef TURN_ON_ETHERNET
# define CONFIG_SMC91111 1
@@ -189,14 +188,16 @@
#undef CONFIG_SYS_SKIP_DRAM_SCRUB
-
/*
* NAND Flash
*/
-#define CONFIG_SYS_NAND0_BASE 0x0
-#undef CONFIG_SYS_NAND1_BASE
+#define CONFIG_NAND_PXA3xx
+#define CONFIG_NAND_PXA3xx_CLK 104000000UL
+#define CONFIG_NEW_NAND_CODE
+#define CONFIG_SYS_NAND_HW_ECC
+
+#define CONFIG_SYS_NAND_BASE 0x0
-#define CONFIG_SYS_NAND_BASE_LIST { CONFIG_SYS_NAND0_BASE }
#define CONFIG_SYS_MAX_NAND_DEVICE 1 /* Max number of NAND devices */
/* nand timeout values */
@@ -205,33 +206,14 @@
#define CONFIG_SYS_NAND_SENDCMD_RETRY 3
#undef NAND_ALLOW_ERASE_ALL /* Allow erasing bad blocks - don't use */
-/* NAND Timing Parameters (in ns) */
-#define NAND_TIMING_tCH 10
-#define NAND_TIMING_tCS 0
-#define NAND_TIMING_tWH 20
-#define NAND_TIMING_tWP 40
-
-#define NAND_TIMING_tRH 20
-#define NAND_TIMING_tRP 40
-
-#define NAND_TIMING_tR 11123
-#define NAND_TIMING_tWHR 100
-#define NAND_TIMING_tAR 10
-
-/* NAND debugging */
-#define CONFIG_SYS_DFC_DEBUG1 /* usefull */
-#undef CONFIG_SYS_DFC_DEBUG2 /* noisy */
-#undef CONFIG_SYS_DFC_DEBUG3 /* extremly noisy */
-
#define CONFIG_MTD_DEBUG
#define CONFIG_MTD_DEBUG_VERBOSE 1
#define CONFIG_SYS_NO_FLASH 1
-#define CONFIG_ENV_IS_IN_NAND 1
+#define CONFIG_ENV_IS_IN_NAND 1
#define CONFIG_ENV_OFFSET 0x40000
#define CONFIG_ENV_OFFSET_REDUND 0x44000
-#define CONFIG_ENV_SIZE 0x4000
-
+#define CONFIG_ENV_SIZE 0x4000
#endif /* __CONFIG_H */
--
1.6.0.4
^ permalink raw reply related [flat|nested] 7+ messages in thread