[U-Boot] [PATCH] at91: Add support for taskit AT91SAM9G20 boards.

Markus Hubig
2012-07-30T18:01:31Z

This adds support for the AT91SAM9G20 boards by taskit GmbH.
Both boards, Stamp9G20 and PortuxG20, are integrated in one
file. PortuxG20 is basically a SBC built around the Stamp9G20.

Signed-off-by: Markus Hubig <mhubig@imko.de>
Cc: Andreas Bie?mann <andreas.devel@googlemail.com>
---
board/taskit/stamp9g20/Makefile | 52 ++++++++
board/taskit/stamp9g20/stamp9g20.c | 199 +++++++++++++++++++++++++++++++
boards.cfg | 2 +
include/configs/stamp9g20.h | 225 ++++++++++++++++++++++++++++++++++++
4 files changed, 478 insertions(+), 0 deletions(-)
create mode 100644 board/taskit/stamp9g20/Makefile
create mode 100644 board/taskit/stamp9g20/stamp9g20.c
create mode 100644 include/configs/stamp9g20.h

diff --git a/board/taskit/stamp9g20/Makefile b/board/taskit/stamp9g20/Makefile
new file mode 100644
index 0000000..e99bfaa
--- /dev/null
+++ b/board/taskit/stamp9g20/Makefile
@@ -0,0 +1,52 @@
+#
+# (C) Copyright 2003-2008
+# Wolfgang Denk, DENX Software Engineering, wd at denx.de.
+#
+# (C) Copyright 2008
+# Stelian Pop <stelian@popies.net>
+# Lead Tech Design <www.leadtechdesign.com>
+#
+# (C) Copyright 2012
+# Markus Hubig <mhubig@imko.de>
+# IMKO GmbH <www.imko.de>
+#
+# 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 $(TOPDIR)/config.mk
+
+LIB = $(obj)lib$(BOARD).o
+
+COBJS-y += stamp9g20.o
+
+SRCS := $(SOBJS:.o=.S) $(COBJS-y:.o=.c)
+OBJS := $(addprefix $(obj),$(COBJS-y))
+SOBJS := $(addprefix $(obj),$(SOBJS))
+
+$(LIB): $(obj).depend $(OBJS) $(SOBJS)
+ $(call cmd_link_o_target, $(OBJS) $(SOBJS))
+
+#########################################################################
+
+# defines $(obj).depend target
+include $(SRCTREE)/rules.mk
+
+sinclude $(obj).depend
+
+#########################################################################
diff --git a/board/taskit/stamp9g20/stamp9g20.c b/board/taskit/stamp9g20/stamp9g20.c
new file mode 100644
index 0000000..b87de51
--- /dev/null
+++ b/board/taskit/stamp9g20/stamp9g20.c
@@ -0,0 +1,199 @@
+/*
+ * (C) Copyright 2007-2008
+ * Stelian Pop <stelian@popies.net>
+ * Lead Tech Design <www.leadtechdesign.com>
+ *
+ * Achim Ehrlich <aehrlich@taskit.de>
+ * taskit GmbH <www.taskit.de>
+ *
+ * (C) Copyright 2012-
+ * Markus Hubig <mhubig@imko.de>
+ * IMKO GmbH <www.imko.de>
+ *
+ * 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>
+#include <asm/io.h>
+#include <asm/arch/at91sam9260_matrix.h>
+#include <asm/arch/at91sam9_smc.h>
+#include <asm/arch/at91_common.h>
+#include <asm/arch/at91_pmc.h>
+#include <asm/arch/at91_rstc.h>
+#include <asm/arch/gpio.h>
+
+#ifdef CONFIG_MACB
+# include <net.h>
+# include <netdev.h>
+#endif /* CONFIG_MACB */
+
+DECLARE_GLOBAL_DATA_PTR;
+
+static void stamp9G20_nand_hw_init(void)
+{
+ struct at91_smc *smc = (struct at91_smc *)ATMEL_BASE_SMC;
+ struct at91_matrix *matrix = (struct at91_matrix *)ATMEL_BASE_MATRIX;
+ unsigned long csa;
+
+ /* Assign CS3 to NAND/SmartMedia Interface */
+ csa = readl(&matrix->ebicsa);
+ csa |= AT91_MATRIX_CS3A_SMC_SMARTMEDIA;
+ writel(csa, &matrix->ebicsa);
+
+ /* Configure SMC CS3 for NAND/SmartMedia */
+ writel(AT91_SMC_SETUP_NWE(1) | AT91_SMC_SETUP_NCS_WR(0) |
+ AT91_SMC_SETUP_NRD(1) | AT91_SMC_SETUP_NCS_RD(0),
+ &smc->cs[3].setup);
+ writel(AT91_SMC_PULSE_NWE(3) | AT91_SMC_PULSE_NCS_WR(3) |
+ AT91_SMC_PULSE_NRD(3) | AT91_SMC_PULSE_NCS_RD(3),
+ &smc->cs[3].pulse);
+ writel(AT91_SMC_CYCLE_NWE(5) | AT91_SMC_CYCLE_NRD(5),
+ &smc->cs[3].cycle);
+ writel(AT91_SMC_MODE_RM_NRD | AT91_SMC_MODE_WM_NWE |
+ AT91_SMC_MODE_EXNW_DISABLE |
+ AT91_SMC_MODE_DBW_8 |
+ AT91_SMC_MODE_TDF_CYCLE(2),
+ &smc->cs[3].mode);
+
+ /* Configure RDY/BSY */
+ at91_set_gpio_input(CONFIG_SYS_NAND_READY_PIN, 1);
+
+ /* Enable NandFlash */
+ at91_set_gpio_output(CONFIG_SYS_NAND_ENABLE_PIN, 1);
+}
+
+#ifdef CONFIG_MACB
+static void stamp9G20_macb_hw_init(void)
+{
+ struct at91_pmc *pmc = (struct at91_pmc *)ATMEL_BASE_PMC;
+ struct at91_port *pioa = (struct at91_port *)ATMEL_BASE_PIOA;
+ struct at91_rstc *rstc = (struct at91_rstc *)ATMEL_BASE_RSTC;
+ unsigned long erstl;
+
+ /* Enable MACB Chip, this is the enable PIN on Stamp Adaptor*/
+ at91_set_gpio_output(AT91_PIN_PA26, 0);
+
+ /* Enable EMAC clock */
+ writel(1 << ATMEL_ID_EMAC0, &pmc->pcer);
+
+ /*
+ * Disable pull-up on:
+ * RXDV (PA17) => PHY normal mode (not Test mode)
+ * ERX0 (PA14) => PHY ADDR0
+ * ERX1 (PA15) => PHY ADDR1
+ * ERX2 (PA25) => PHY ADDR2
+ * ERX3 (PA26) => PHY ADDR3
+ * ECRS (PA28) => PHY ADDR4 => PHYADDR = 0x0
+ *
+ * PHY has internal pull-down
+ */
+ writel(pin_to_mask(AT91_PIN_PA14) |
+ pin_to_mask(AT91_PIN_PA15) |
+ pin_to_mask(AT91_PIN_PA17) |
+ pin_to_mask(AT91_PIN_PA18) |
+ pin_to_mask(AT91_PIN_PA28),
+ &pioa->pudr);
+
+ erstl = readl(&rstc->mr) & AT91_RSTC_MR_ERSTL_MASK;
+
+ /* Need to reset PHY -> 500ms reset */
+ writel(AT91_RSTC_KEY | AT91_RSTC_MR_ERSTL(13) |
+ AT91_RSTC_MR_URSTEN, &rstc->mr);
+
+ writel(AT91_RSTC_KEY | AT91_RSTC_CR_EXTRST, &rstc->cr);
+
+ /* Wait for end hardware reset */
+ while (!(readl(&rstc->sr) & AT91_RSTC_SR_NRSTL))
+ ;
+
+ /* Restore NRST value */
+ writel(AT91_RSTC_KEY | erstl | AT91_RSTC_MR_URSTEN,
+ &rstc->mr);
+
+ /* Re-enable pull-up */
+ writel(pin_to_mask(AT91_PIN_PA14) |
+ pin_to_mask(AT91_PIN_PA15) |
+ pin_to_mask(AT91_PIN_PA17) |
+ pin_to_mask(AT91_PIN_PA18) |
+ pin_to_mask(AT91_PIN_PA28),
+ &pioa->puer);
+
+ /* Initialize EMAC=MACB hardware */
+ at91_macb_hw_init();
+}
+#endif /* CONFIG_MACB */
+
+int board_early_init_f(void)
+{
+ struct at91_pmc *pmc = (struct at91_pmc *)ATMEL_BASE_PMC;
+
+ /* Enable clocks for all PIOs */
+ writel((1 << ATMEL_ID_PIOA) | (1 << ATMEL_ID_PIOB) |
+ (1 << ATMEL_ID_PIOC), &pmc->pcer);
+
+ return 0;
+}
+
+int board_init(void)
+{
+#ifdef CONFIG_PORTUXG20
+ gd->bd->bi_arch_number = MACH_TYPE_PORTUXG20;
+#else
+ gd->bd->bi_arch_number = MACH_TYPE_STAMP9G20;
+#endif
+ /* adress of boot parameters */
+ gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE + 0x100;
+
+ at91_set_gpio_output(AT91_PIN_PC9, 1);
+ at91_set_gpio_output(AT91_PIN_PC5, 1);
+
+ at91_seriald_hw_init();
+ stamp9G20_nand_hw_init();
+#ifdef CONFIG_MACB
+ stamp9G20_macb_hw_init();
+#endif
+
+ return 0;
+}
+
+int dram_init(void)
+{
+ gd->ram_size = get_ram_size(
+ (void *)CONFIG_SYS_SDRAM_BASE,
+ CONFIG_SYS_SDRAM_SIZE);
+ return 0;
+}
+
+#ifdef CONFIG_MACB
+void reset_phy(void)
+{
+ /*
+ * Initialize ethernet HW addr prior to starting Linux,
+ * needed for nfsroot
+ */
+ eth_init(gd->bd);
+}
+
+int board_eth_init(bd_t *bis)
+{
+ int rc = 0;
+ rc = macb_eth_initialize(0, (void *)ATMEL_BASE_EMAC0, 0x00);
+ return rc;
+}
+#endif /* CONFIG_MACB */
diff --git a/boards.cfg b/boards.cfg
index 2d36d83..9c5ba09 100644
--- a/boards.cfg
+++ b/boards.cfg
@@ -120,6 +120,8 @@ cpu9G20_nand_128M arm arm926ejs cpu9260 eukrea
pm9261 arm arm926ejs pm9261 ronetix at91 pm9261:AT91SAM9261
pm9263 arm arm926ejs pm9263 ronetix at91 pm9263:AT91SAM9263
pm9g45 arm arm926ejs pm9g45 ronetix at91 pm9g45:AT91SAM9G45
+portuxg20 arm arm926ejs stamp9g20 taskit at91 stamp9g20:AT91SAM9G20,CONFIG_PORTUXG20
+stamp9g20 arm arm926ejs stamp9g20 taskit at91 stamp9g20:AT91SAM9G20
cam_enc_4xx arm arm926ejs cam_enc_4xx ait davinci cam_enc_4xx
da830evm arm arm926ejs da8xxevm davinci davinci
da850_am18xxevm arm arm926ejs da8xxevm davinci davinci da850evm:DA850_AM18X_EVM,MAC_ADDR_IN_EEPROM,SYS_I2C_EEPROM_ADDR_LEN=2,SYS_I2C_EEPROM_ADDR=0x50
diff --git a/include/configs/stamp9g20.h b/include/configs/stamp9g20.h
new file mode 100644
index 0000000..7783a2f
--- /dev/null
+++ b/include/configs/stamp9g20.h
@@ -0,0 +1,225 @@
+/*
+ * (C) Copyright 2007-2008
+ * Stelian Pop <stelian@popies.net>
+ * Lead Tech Design <www.leadtechdesign.com>
+ *
+ * (C) Copyright 2010
+ * Achim Ehrlich <aehrlich@taskit.de>
+ * taskit GmbH <www.taskit.de>
+ *
+ * (C) Copyright 2012
+ * Markus Hubig <mhubig@imko.de>
+ * IMKO GmbH <www.imko.de>
+ *
+ * Configuation settings for the stamp9g20 CPU module.
+ *
+ * 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
+ */
+
+#ifndef __CONFIG_H
+#define __CONFIG_H
+
+/*
+ * SoC must be defined first, before hardware.h is included.
+ * In this case SoC is defined in boards.cfg.
+ */
+#include <asm/hardware.h>
+
+/*
+ * Warning: changing CONFIG_SYS_TEXT_BASE requires adapting the initial boot
+ * program. Since the linker has to swallow that define, we must use a pure
+ * hex number here!
+ */
+#define CONFIG_SYS_TEXT_BASE 0x23f00000
+
+/* ARM asynchronous clock */
+#define CONFIG_SYS_AT91_SLOW_CLOCK 32768 /* slow clock xtal */
+#define CONFIG_SYS_AT91_MAIN_CLOCK 18432000 /* 18.432MHz crystal */
+#define CONFIG_SYS_HZ 1000 /* 1ms resolution */
+
+/* Misc CPU related settings */
+#define CONFIG_ARCH_CPU_INIT /* call arch_cpu_init() */
+#undef CONFIG_USE_IRQ /* we don't need IRQ stuff */
+#define CONFIG_CMDLINE_TAG /* pass commandline to Kernel */
+#define CONFIG_SETUP_MEMORY_TAGS /* pass memory defs to kernel */
+#define CONFIG_INITRD_TAG /* pass initrd param to kernel */
+#define CONFIG_SKIP_LOWLEVEL_INIT /* U-Boot is loaded by a bootloader */
+#define CONFIG_BOARD_EARLY_INIT_f /* call board_early_init_f() */
+#define CONFIG_DISPLAY_CPUINFO /* display CPU Info at startup */
+
+/*
+ * SDRAM: 1 bank, 64 MB, base address 0x20000000
+ * Already initialized before u-boot gets started.
+ */
+#define CONFIG_NR_DRAM_BANKS 1
+#define CONFIG_SYS_SDRAM_BASE ATMEL_BASE_CS1
+#define CONFIG_SYS_SDRAM_SIZE (64 * (1024 << 10))
+
+/*
+ * Perform a SDRAM Memtest from the start of SDRAM
+ * till the beginning of the U-Boot position in RAM.
+ */
+#define CONFIG_SYS_MEMTEST_START CONFIG_SYS_SDRAM_BASE
+#define CONFIG_SYS_MEMTEST_END (CONFIG_SYS_TEXT_BASE - 0x100000)
+
+/* Size of malloc() pool */
+#define CONFIG_SYS_MALLOC_LEN \
+ ROUND(3 * CONFIG_ENV_SIZE + 128 * 1024, 0x1000)
+
+/*
+ * Initial stack pointer: 4k - GENERATED_GBL_DATA_SIZE in internal SRAM,
+ * leaving the correct space for initial global data structure above that
+ * address while providing maximum stack area below.
+ */
+#define CONFIG_STACKSIZE (32 * 1024) /* 32k regular stack size */
+#define CONFIG_SYS_INIT_SP_ADDR \
+ (ATMEL_BASE_SRAM1 + 0x1000 - GENERATED_GBL_DATA_SIZE)
+
+/* NAND flash settings */
+#define CONFIG_NAND_ATMEL
+#define CONFIG_SYS_NO_FLASH
+#define CONFIG_SYS_MAX_NAND_DEVICE 1
+#define CONFIG_SYS_NAND_BASE ATMEL_BASE_CS3
+#define CONFIG_SYS_NAND_DBW_8
+#define CONFIG_SYS_NAND_MASK_ALE (1 << 21)
+#define CONFIG_SYS_NAND_MASK_CLE (1 << 22)
+#define CONFIG_SYS_NAND_ENABLE_PIN AT91_PIN_PC14
+#define CONFIG_SYS_NAND_READY_PIN AT91_PIN_PC13
+
+/* general purpose I/O */
+#define CONFIG_ATMEL_LEGACY /* required until (g)pio is fixed */
+#define CONFIG_AT91_GPIO /* enable the GPIO features */
+#define CONFIG_AT91_GPIO_PULLUP 1 /* keep pullups on peripheral pins */
+
+/* serial console */
+#define CONFIG_ATMEL_USART
+#define CONFIG_USART_BASE ATMEL_BASE_DBGU
+#define CONFIG_USART_ID ATMEL_ID_SYS
+#define CONFIG_BAUDRATE 115200
+#define CONFIG_SYS_BAUDRATE_TABLE {115200, 19200, 38400, 57600, 9600}
+#define CONFIG_USART3 /* USART 3 is used as DBGU */
+
+/* Ethernet configuration */
+#define CONFIG_MACB /* initialize the ethernet port */
+
+#ifdef CONFIG_MACB
+# define CONFIG_RMII /* use reduced MII inteface */
+# define CONFIG_RESET_PHY_R /* call reset_phy() after reloc. */
+# define CONFIG_NET_RETRY_COUNT 20 /* # of DHCP/BOOTP retries */
+#endif /* CONFIG_MACB */
+
+/* USB configuration */
+#define CONFIG_USB_ATMEL
+#define CONFIG_USB_OHCI_NEW
+#define CONFIG_USB_STORAGE
+#define CONFIG_DOS_PARTITION
+#define CONFIG_SYS_USB_OHCI_CPU_INIT
+#define CONFIG_SYS_USB_OHCI_REGS_BASE ATMEL_UHP_BASE
+#define CONFIG_SYS_USB_OHCI_SLOT_NAME "at91sam9260"
+#define CONFIG_SYS_USB_OHCI_MAX_ROOT_PORTS 2
+
+/* BOOTP options */
+#ifdef CONFIG_MACB
+# define CONFIG_BOOTP_BOOTFILESIZE
+# define CONFIG_BOOTP_BOOTPATH
+# define CONFIG_BOOTP_GATEWAY
+# define CONFIG_BOOTP_HOSTNAME
+#endif /* CONFIG_MACB */
+
+/* General Boot Parameter */
+#define CONFIG_BOOTDELAY 3
+#define CONFIG_BOOTCOMMAND "run flashboot"
+#define CONFIG_SYS_PROMPT "U-Boot> "
+#define CONFIG_SYS_CBSIZE 256
+#define CONFIG_SYS_MAXARGS 16
+#define CONFIG_SYS_PBSIZE \
+ (CONFIG_SYS_CBSIZE + sizeof(CONFIG_SYS_PROMPT) + 16)
+#define CONFIG_SYS_LONGHELP
+#define CONFIG_CMDLINE_EDITING
+
+/*
+ * RAM Memory address where to put the
+ * Linux Kernel bevor starting.
+ */
+#define CONFIG_SYS_LOAD_ADDR 0x22000000
+
+/*
+ * The NAND Flash partitions:
+ * ==========================================
+ * 0x0000000-0x001ffff -> 128k, bootstrap
+ * 0x0020000-0x005ffff -> 256k, u-boot
+ * 0x0060000-0x007ffff -> 128k, env1
+ * 0x0080000-0x009ffff -> 128k, env2 (backup)
+ * 0x0100000-0x03fffff -> 2M, kernel
+ * 0x0400000-0x8000000 -> 124M, RootFS
+ */
+#define CONFIG_ENV_IS_IN_NAND
+#define CONFIG_ENV_OFFSET (128 + 256 << 10)
+#define CONFIG_ENV_OFFSET_REDUND (128 + 256 + 128 << 10)
+#define CONFIG_ENV_SIZE (128 << 10)
+
+/*
+ * Predefined environment variables.
+ * Usefull to define some easy to use boot commands.
+ */
+#define CONFIG_EXTRA_ENV_SETTINGS \
+ \
+ "basicargs=console=ttyS0,115200 mem=64M\0" \
+ \
+ "mtdparts=mtdparts=atmel_nand:128k(bootstrap)ro," \
+ "256k(uboot)ro,128k(env1)ro," \
+ "128k(env2)ro,2M(linux),-(root)rw\0" \
+ \
+ "sdboot=setenv bootargs ${basicargs} ${mtdparts} " \
+ "root=/dev/mmcblk0p1 rootdelay=1; " \
+ "nand read 0x22000000 0xA0000 0x200000; " \
+ "bootm 22000000\0" \
+ \
+ "flashboot=setenv bootargs ${basicargs} ${mtdparts} " \
+ "root=/dev/mtdblock5 rootfstype=jffs2; " \
+ "nand read 0x22000000 0xA0000 0x200000; " \
+ "bootm 22000000\0" \
+ \
+ "nfsboot=setenv bootargs ${basicargs} ${mtdparts} " \
+ "root=/dev/nfs ip=dhcp " \
+ "nfsroot=${serverip}:/srv/nfs/rootfs; dhcp; " \
+ "bootm\0"
+
+/* Command line & features configuration */
+#include <config_cmd_default.h>
+#undef CONFIG_CMD_FPGA
+#undef CONFIG_CMD_IMI
+#undef CONFIG_CMD_IMLS
+#undef CONFIG_CMD_LOADS
+#undef CONFIG_CMD_SOURCE
+
+#define CONFIG_CMD_NAND
+#define CONFIG_CMD_USB
+#define CONFIG_CMD_FAT
+
+#ifdef CONFIG_MACB
+# define CONFIG_CMD_PING
+# define CONFIG_CMD_DHCP
+#endif /* CONFIG_MACB */
+
+#ifdef CONFIG_USE_IRQ
+# error CONFIG_USE_IRQ not supported
+#endif
+
+#endif
--
1.7.7