[U-Boot] [RFC 4/5] MX31: Add basic support for Freescale i.MX31 PDK board.

Magnus Lilja lilja.magnus at gmail.com
Fri Apr 3 23:28:03 CEST 2009


Add support for Freescale's i.MX31 PDK board (a.k.a. 3 stack board).

This patch assumes that some other program performs the actual
NAND boot.
---
 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/asm-arm/arch-mx31/mx31-regs.h   |    2 +
 include/configs/mx31pdk.h               |  162 +++++++++++++++++++++++++++++++
 9 files changed, 387 insertions(+), 0 deletions(-)
 create mode 100644 board/freescale/mx31pdk/Makefile
 create mode 100644 board/freescale/mx31pdk/config.mk
 create mode 100644 board/freescale/mx31pdk/lowlevel_init.S
 create mode 100644 board/freescale/mx31pdk/mx31pdk.c
 create mode 100644 board/freescale/mx31pdk/u-boot.lds
 create mode 100644 include/configs/mx31pdk.h

diff --git a/MAKEALL b/MAKEALL
index 94ad389..b581608 100755
--- a/MAKEALL
+++ b/MAKEALL
@@ -549,6 +549,7 @@ LIST_ARM11="			\
 	imx31_phycore_eet	\
  	imx31_phycore_nand	\
 	mx31ads			\
+ 	mx31pdk			\
 	qong			\
 	smdk6400		\
 "
diff --git a/Makefile b/Makefile
index f0981ce..40f3465 100644
--- a/Makefile
+++ b/Makefile
@@ -3081,6 +3081,9 @@ imx31_phycore_nand_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..b64cec8
--- /dev/null
+++ b/board/freescale/mx31pdk/Makefile
@@ -0,0 +1,53 @@
+#
+# (C) Copyright 2008 Magnus Lilja <lilja.magnus at 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 $(obj).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..ec5eedb
--- /dev/null
+++ b/board/freescale/mx31pdk/lowlevel_init.S
@@ -0,0 +1,30 @@
+/*
+ * (C) Copyright 2008 Magnus Lilja <lilja.magnus at 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 at gmail.com>
+ *
+ * (c) 2007 Pengutronix, Sascha Hauer <s.hauer at 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..e96509a
--- /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 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
+ */
+
+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/asm-arm/arch-mx31/mx31-regs.h b/include/asm-arm/arch-mx31/mx31-regs.h
index 45f2ae3..34da648 100644
--- a/include/asm-arm/arch-mx31/mx31-regs.h
+++ b/include/asm-arm/arch-mx31/mx31-regs.h
@@ -84,6 +84,8 @@
 #define IPU_CONF_IC_EN		(1<<1)
 #define IPU_CONF_SCI_EN		(1<<0)
 
+#define ARM_PPMRR		0x40000015
+
 #define WDOG_BASE		0x53FDC000
 
 /*
diff --git a/include/configs/mx31pdk.h b/include/configs/mx31pdk.h
new file mode 100644
index 0000000..deda70d
--- /dev/null
+++ b/include/configs/mx31pdk.h
@@ -0,0 +1,162 @@
+/*
+ * (C) Copyright 2008 Magnus Lilja <lilja.magnus at gmail.com>
+ *
+ * (C) Copyright 2004
+ * Texas Instruments.
+ * Richard Woodruff <r-woodruff2 at ti.com>
+ * Kshitij Gupta <kshitij at 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 CONFIG_SYS_MALLOC_LEN		(CONFIG_ENV_SIZE + 128 * 1024)
+/* Bytes reserved for initial data */
+#define CONFIG_SYS_GBL_DATA_SIZE	128
+
+/*
+ * Hardware drivers
+ */
+
+#define CONFIG_MX31_UART	1
+#define CONFIG_SYS_MX31_UART1	1
+
+#define CONFIG_HARD_SPI		1
+#define CONFIG_MXC_SPI		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 CONFIG_SYS_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 CONFIG_SYS_LONGHELP	/* undef to save memory */
+#define CONFIG_SYS_PROMPT	"uboot> "
+#define CONFIG_SYS_CBSIZE	256  /* Console I/O Buffer Size */
+/* Print Buffer Size */
+#define CONFIG_SYS_PBSIZE	(CONFIG_SYS_CBSIZE + \
+				sizeof(CONFIG_SYS_PROMPT)+16)
+/* max number of command args */
+#define CONFIG_SYS_MAXARGS	16
+/* Boot Argument Buffer Size */
+#define CONFIG_SYS_BARGSIZE	CONFIG_SYS_CBSIZE
+
+#define CONFIG_SYS_MEMTEST_START	PHYS_SDRAM_1  /* memtest works on */
+#define CONFIG_SYS_MEMTEST_END		0x10000
+
+#define CONFIG_SYS_LOAD_ADDR		0x81000000 /* default load address */
+
+#define CONFIG_SYS_HZ			1000
+
+#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 CONFIG_SYS_NO_FLASH	1
+
+#define CONFIG_ENV_IS_NOWHERE 	1
+
+#define CONFIG_ENV_SIZE		(128 * 1024)
+
+#endif /* __CONFIG_H */
+
-- 
1.5.6



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