[U-Boot] [PATCH v3 3/6] i.MX31: Add basic support for Freescale's i.MX31 PDK board.

Magnus Lilja
2008-08-29T08:36:19Z

Add support for the Freescale i.MX31 PDK (a.k.a 3DS) board. Ethernet and
MC13873 RTC support is enabled by this patch.

Booting from NAND is not supported yet so U-boot relies on some other
initial boot loader to set up SDRAM and clocks and copying U-boot to SDRAM.

Signed-off-by: Magnus Lilja <lilja.magnus@gmail.com>
---
MAKEALL | 1 +
Makefile | 3 +
board/freescale/mx31pdk/Makefile | 53 ++++++++++
board/freescale/mx31pdk/config.mk | 1 +
board/freescale/mx31pdk/lowlevel_init.S | 30 ++++++
board/freescale/mx31pdk/mx31pdk.c | 76 +++++++++++++++
board/freescale/mx31pdk/u-boot.lds | 59 ++++++++++++
include/configs/mx31pdk.h | 159 +++++++++++++++++++++++++++++++
8 files changed, 382 insertions(+), 0 deletions(-)

diff --git a/MAKEALL b/MAKEALL
index e382947..c47cd09 100755
--- a/MAKEALL
+++ b/MAKEALL
@@ -519,6 +519,7 @@ LIST_ARM11=" \
imx31_litekit \
imx31_phycore \
mx31ads \
+ mx31pdk \
"

#########################################################################
diff --git a/Makefile b/Makefile
index 0f82e71..fe7e811 100644
--- a/Makefile
+++ b/Makefile
@@ -2755,6 +2755,9 @@ imx31_phycore_config : unconfig
mx31ads_config : unconfig
@$(MKCONFIG) $(@:_config=) arm arm1136 mx31ads freescale mx31

+mx31pdk_config : unconfig
+ @$(MKCONFIG) $(@:_config=) arm arm1136 mx31pdk freescale mx31
+
omap2420h4_config : unconfig
@$(MKCONFIG) $(@:_config=) arm arm1136 omap2420h4 NULL omap24xx

diff --git a/board/freescale/mx31pdk/Makefile b/board/freescale/mx31pdk/Makefile
new file mode 100644
index 0000000..6ae34ea
--- /dev/null
+++ b/board/freescale/mx31pdk/Makefile
@@ -0,0 +1,53 @@
+#
+# (C) Copyright 2008 Magnus Lilja <lilja.magnus@gmail.com>
+#
+# (C) Copyright 2000-2006
+# Wolfgang Denk, DENX Software Engineering, wd at denx.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).a
+
+COBJS := mx31pdk.o
+SOBJS := lowlevel_init.o
+
+SRCS := $(SOBJS:.o=.S) $(COBJS:.o=.c)
+OBJS := $(addprefix $(obj),$(COBJS))
+SOBJS := $(addprefix $(obj),$(SOBJS))
+
+$(LIB): $(obj).depend $(OBJS) $(SOBJS)
+ $(AR) $(ARFLAGS) $@ $(OBJS) $(SOBJS)
+
+clean:
+ rm -f $(SOBJS) $(OBJS)
+
+distclean: clean
+ rm -f $(LIB) core *.bak .depend
+
+#########################################################################
+
+# defines $(obj).depend target
+include $(SRCTREE)/rules.mk
+
+sinclude $(obj).depend
+
+#########################################################################
diff --git a/board/freescale/mx31pdk/config.mk b/board/freescale/mx31pdk/config.mk
new file mode 100644
index 0000000..d34dc02
--- /dev/null
+++ b/board/freescale/mx31pdk/config.mk
@@ -0,0 +1 @@
+TEXT_BASE = 0x87f00000
diff --git a/board/freescale/mx31pdk/lowlevel_init.S b/board/freescale/mx31pdk/lowlevel_init.S
new file mode 100644
index 0000000..a94ea7f
--- /dev/null
+++ b/board/freescale/mx31pdk/lowlevel_init.S
@@ -0,0 +1,30 @@
+/*
+ * (C) Copyright 2008 Magnus Lilja <lilja.magnus@gmail.com>
+ *
+ * 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
+ */
+
+/*
+ * This is just to keep the linker happy.
+ */
+
+.globl lowlevel_init
+lowlevel_init:
+ mov pc, lr
+
diff --git a/board/freescale/mx31pdk/mx31pdk.c b/board/freescale/mx31pdk/mx31pdk.c
new file mode 100644
index 0000000..9eed979
--- /dev/null
+++ b/board/freescale/mx31pdk/mx31pdk.c
@@ -0,0 +1,76 @@
+/*
+ *
+ * (C) Copyright 2008 Magnus Lilja <lilja.magnus@gmail.com>
+ *
+ * (c) 2007 Pengutronix, Sascha Hauer <s.hauer@pengutronix.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/arch/mx31.h>
+#include <asm/arch/mx31-regs.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+int dram_init(void)
+{
+ gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
+ gd->bd->bi_dram[0].size = PHYS_SDRAM_1_SIZE;
+
+ return 0;
+}
+
+int board_init(void)
+{
+ /* CS5: CPLD incl. network controller */
+ __REG(CSCR_U(5)) = 0x0000d843;
+ __REG(CSCR_L(5)) = 0x22252521;
+ __REG(CSCR_A(5)) = 0x22220a00;
+
+ /* setup pins for UART1 */
+ mx31_gpio_mux(MUX_RXD1__UART1_RXD_MUX);
+ mx31_gpio_mux(MUX_TXD1__UART1_TXD_MUX);
+ mx31_gpio_mux(MUX_RTS1__UART1_RTS_B);
+ mx31_gpio_mux(MUX_CTS1__UART1_CTS_B);
+
+ /* SPI2 */
+ mx31_gpio_mux(MUX_CSPI2_SS2__CSPI2_SS2_B);
+ mx31_gpio_mux(MUX_CSPI2_SCLK__CSPI2_CLK);
+ mx31_gpio_mux(MUX_CSPI2_SPI_RDY__CSPI2_DATAREADY_B);
+ mx31_gpio_mux(MUX_CSPI2_MOSI__CSPI2_MOSI);
+ mx31_gpio_mux(MUX_CSPI2_MISO__CSPI2_MISO);
+ mx31_gpio_mux(MUX_CSPI2_SS0__CSPI2_SS0_B);
+ mx31_gpio_mux(MUX_CSPI2_SS1__CSPI2_SS1_B);
+
+ /* start SPI2 clock */
+ __REG(CCM_CGR2) = __REG(CCM_CGR2) | (3 << 4);
+
+ gd->bd->bi_arch_number = MACH_TYPE_MX31_3DS; /* board id for linux */
+ gd->bd->bi_boot_params = 0x80000100; /* adress of boot parameters */
+
+ return 0;
+}
+
+int checkboard(void)
+{
+ printf("Board: i.MX31 MAX PDK (3DS)\n");
+ return 0;
+}
diff --git a/board/freescale/mx31pdk/u-boot.lds b/board/freescale/mx31pdk/u-boot.lds
new file mode 100644
index 0000000..1460adc
--- /dev/null
+++ b/board/freescale/mx31pdk/u-boot.lds
@@ -0,0 +1,59 @@
+/*
+ * January 2004 - Changed to support H4 device
+ * Copyright (c) 2004 Texas Instruments
+ *
+ * (C) Copyright 2002
+ * Gary Jennejohn, DENX Software Engineering, <gj@denx.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
+ */
+
+OUTPUT_FORMAT("elf32-littlearm", "elf32-littlearm", "elf32-littlearm")
+OUTPUT_ARCH(arm)
+ENTRY(_start)
+SECTIONS
+{
+ . = 0x00000000;
+
+ . = ALIGN(4);
+ .text :
+ {
+ cpu/arm1136/start.o (.text)
+ *(.text)
+ }
+
+ . = ALIGN(4);
+ .rodata : { *(.rodata) }
+
+ . = ALIGN(4);
+ .data : { *(.data) }
+
+ . = ALIGN(4);
+ .got : { *(.got) }
+
+ . = .;
+ __u_boot_cmd_start = .;
+ .u_boot_cmd : { *(.u_boot_cmd) }
+ __u_boot_cmd_end = .;
+
+ . = ALIGN(4);
+ __bss_start = .;
+ .bss : { *(.bss) }
+ _end = .;
+}
diff --git a/include/configs/mx31pdk.h b/include/configs/mx31pdk.h
new file mode 100644
index 0000000..6df1a00
--- /dev/null
+++ b/include/configs/mx31pdk.h
@@ -0,0 +1,159 @@
+/*
+ * (C) Copyright 2008 Magnus Lilja <lilja.magnus@gmail.com>
+ *
+ * (C) Copyright 2004
+ * Texas Instruments.
+ * Richard Woodruff <r-woodruff2@ti.com>
+ * Kshitij Gupta <kshitij@ti.com>
+ *
+ * Configuration settings for the Freescale i.MX31 PDK board.
+ *
+ * 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
+
+#include <asm/arch/mx31-regs.h>
+
+/* High Level Configuration Options */
+#define CONFIG_ARM1136 1 /* This is an arm1136 CPU core */
+#define CONFIG_MX31 1 /* in a mx31 */
+#define CONFIG_MX31_HCLK_FREQ 26000000
+#define CONFIG_MX31_CLK32 32768
+
+#define CONFIG_DISPLAY_CPUINFO
+#define CONFIG_DISPLAY_BOARDINFO
+
+#define CONFIG_CMDLINE_TAG 1 /* enable passing of ATAGs */
+#define CONFIG_SETUP_MEMORY_TAGS 1
+#define CONFIG_INITRD_TAG 1
+
+/* No support for NAND boot for i.MX31 PDK yet, so we rely on some other
+ * program to initialize the SDRAM.
+ */
+#define CONFIG_SKIP_LOWLEVEL_INIT
+
+/*
+ * Size of malloc() pool
+ */
+#define CFG_MALLOC_LEN (CFG_ENV_SIZE + 128 * 1024)
+#define CFG_GBL_DATA_SIZE 128 /* bytes reserved for initial data */
+
+/*
+ * Hardware drivers
+ */
+
+#define CONFIG_MX31_UART 1
+#define CFG_MX31_UART1 1
+
+#define CONFIG_HARD_SPI 1
+#define CONFIG_MXC_SPI 1
+#define CONFIG_MXC_SPI_IFACE 1
+#define CONFIG_DEFAULT_SPI_BUS 1
+#define CONFIG_DEFAULT_SPI_MODE (SPI_MODE_2 | SPI_CS_HIGH)
+
+#define CONFIG_RTC_MC13783 1
+
+/* MC13783 connected to CSPI2 and SS2 */
+#define CONFIG_MC13783_SPI_BUS 1
+#define CONFIG_MC13783_SPI_CS 2
+
+/* allow to overwrite serial and ethaddr */
+#define CONFIG_ENV_OVERWRITE
+#define CONFIG_CONS_INDEX 1
+#define CONFIG_BAUDRATE 115200
+#define CFG_BAUDRATE_TABLE {9600, 19200, 38400, 57600, 115200}
+
+/***********************************************************
+ * Command definition
+ ***********************************************************/
+
+#include <config_cmd_default.h>
+
+#define CONFIG_CMD_MII
+#define CONFIG_CMD_PING
+#define CONFIG_CMD_SPI
+#define CONFIG_CMD_DATE
+
+/* Disabled due to compilation errors in cmd_bootm.c (IMLS seems to require
+ * that CFG_NO_FLASH is undefined).
+ */
+#undef CONFIG_CMD_IMLS
+
+#define CONFIG_BOOTDELAY 3
+
+#define CONFIG_EXTRA_ENV_SETTINGS \
+ "bootargs_base=setenv bootargs console=ttymxc0,115200\0" \
+ "bootargs_nfs=setenv bootargs $(bootargs) root=/dev/nfs " \
+ "ip=dhcp nfsroot=$(serverip):$(nfsrootfs),v3,tcp\0" \
+ "bootcmd=run bootcmd_net\0" \
+ "bootcmd_net=run bootargs_base bootargs_mtd bootargs_nfs; " \
+ "tftpboot 0x81000000 uImage-mx31; bootm\0"
+
+#define CONFIG_DRIVER_SMC911X 1
+#define CONFIG_DRIVER_SMC911X_BASE CS5_BASE
+#define CONFIG_DRIVER_SMC911X_32_BIT 1
+
+/*
+ * Miscellaneous configurable options
+ */
+#define CFG_LONGHELP /* undef to save memory */
+#define CFG_PROMPT "uboot> "
+#define CFG_CBSIZE 256 /* Console I/O Buffer Size */
+/* Print Buffer Size */
+#define CFG_PBSIZE (CFG_CBSIZE+sizeof(CFG_PROMPT)+16)
+#define CFG_MAXARGS 16 /* max number of command args */
+#define CFG_BARGSIZE CFG_CBSIZE /* Boot Argument Buffer Size */
+
+#define CFG_MEMTEST_START PHYS_SDRAM_1 /* memtest works on */
+#define CFG_MEMTEST_END 0x10000
+
+#define CFG_LOAD_ADDR 0x81000000 /* default load address */
+
+#define CFG_HZ CONFIG_MX31_CLK32
+
+#define CONFIG_CMDLINE_EDITING 1
+
+/*-----------------------------------------------------------------------
+ * Stack sizes
+ *
+ * The stack sizes are set up in start.S using the settings below
+ */
+#define CONFIG_STACKSIZE (128 * 1024) /* regular stack */
+
+/*-----------------------------------------------------------------------
+ * Physical Memory Map
+ */
+#define CONFIG_NR_DRAM_BANKS 1
+#define PHYS_SDRAM_1 CSD0_BASE
+#define PHYS_SDRAM_1_SIZE (128 * 1024 * 1024)
+
+/*-----------------------------------------------------------------------
+ * FLASH and environment organization
+ */
+/* No NOR flash present */
+#define CFG_NO_FLASH 1
+
+#define CFG_ENV_IS_NOWHERE 1
+
+#define CFG_ENV_SIZE (128 * 1024)
+
+#endif /* __CONFIG_H */
+
--
1.5.2.4