[U-Boot-Users] [PATCH 7/7] Support for the MX31ADS evaluation board from Freescale

Guennadi Liakhovetski lg at denx.de
Wed Mar 26 15:01:16 CET 2008


This patch adds support for the MX31ADS evaluation board from Freescale, 
initialization code is copied from RedBoot sources, also provided by 
Freescale.

Signed-off-by: Guennadi Liakhovetski <lg at denx.de>

---

 MAKEALL                                     |    1 +
 Makefile                                    |    3 +
 board/mx31ads/Makefile                      |   47 +++++
 board/{imx31_litekit => mx31ads}/config.mk  |    0 
 board/mx31ads/lowlevel_init.S               |  281 +++++++++++++++++++++++++++
 board/mx31ads/mx31ads.c                     |   95 +++++++++
 board/{imx31_litekit => mx31ads}/u-boot.lds |    0 
 include/asm-arm/arch-mx31/mx31-regs.h       |   14 ++
 include/configs/mx31ads.h                   |  157 +++++++++++++++
 9 files changed, 598 insertions(+), 0 deletions(-)
 create mode 100644 board/mx31ads/Makefile
 copy board/{imx31_litekit => mx31ads}/config.mk (100%)
 create mode 100644 board/mx31ads/lowlevel_init.S
 create mode 100644 board/mx31ads/mx31ads.c
 copy board/{imx31_litekit => mx31ads}/u-boot.lds (100%)
 create mode 100644 include/configs/mx31ads.h

diff --git a/MAKEALL b/MAKEALL
index 0ca866f..d192ed2 100755
--- a/MAKEALL
+++ b/MAKEALL
@@ -504,6 +504,7 @@ LIST_ARM11="		\
 	apollon		\
 	imx31_litekit	\
 	imx31_phycore	\
+	mx31ads		\
 "
 
 #########################################################################
diff --git a/Makefile b/Makefile
index b3cbb20..207f5bc 100644
--- a/Makefile
+++ b/Makefile
@@ -2601,6 +2601,9 @@ imx31_litekit_config	: unconfig
 imx31_phycore_config	: unconfig
 	@$(MKCONFIG) $(@:_config=) arm arm1136 imx31_phycore NULL mx31
 
+mx31ads_config		: unconfig
+	@$(MKCONFIG) $(@:_config=) arm arm1136 mx31ads NULL mx31
+
 #========================================================================
 # i386
 #========================================================================
diff --git a/board/mx31ads/Makefile b/board/mx31ads/Makefile
new file mode 100644
index 0000000..dfadd96
--- /dev/null
+++ b/board/mx31ads/Makefile
@@ -0,0 +1,47 @@
+#
+# Copyright (C) 2008, Guennadi Liakhovetski <lg at denx.de>
+#
+# 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	:= mx31ads.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/imx31_litekit/config.mk b/board/mx31ads/config.mk
similarity index 100%
copy from board/imx31_litekit/config.mk
copy to board/mx31ads/config.mk
diff --git a/board/mx31ads/lowlevel_init.S b/board/mx31ads/lowlevel_init.S
new file mode 100644
index 0000000..099a7ca
--- /dev/null
+++ b/board/mx31ads/lowlevel_init.S
@@ -0,0 +1,281 @@
+/*
+ * Copyright (C) 2008, Guennadi Liakhovetski <lg at denx.de>
+ *
+ * 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 <asm/arch/mx31-regs.h>
+
+.macro REG reg, val
+	ldr r2, =\reg
+	ldr r3, =\val
+	str r3, [r2]
+.endm
+
+.macro REG8 reg, val
+	ldr r2, =\reg
+	ldr r3, =\val
+	strb r3, [r2]
+.endm
+
+.macro DELAY loops
+	ldr r2, =\loops
+1:
+	subs	r2, r2, #1
+	nop
+	bcs 1b
+.endm
+
+/* RedBoot: AIPS setup - Only setup MPROTx registers.
+ * The PACR default values are good.*/
+.macro init_aips
+	/*
+	 * Set all MPROTx to be non-bufferable, trusted for R/W,
+	 * not forced to user-mode.
+	 */
+	ldr r0, =0x43F00000
+	ldr r1, =0x77777777
+	str r1, [r0, #0x00]
+	str r1, [r0, #0x04]
+	ldr r0, =0x53F00000
+	str r1, [r0, #0x00]
+	str r1, [r0, #0x04]
+
+	/*
+	 * Clear the on and off peripheral modules Supervisor Protect bit
+	 * for SDMA to access them. Did not change the AIPS control registers
+	 * (offset 0x20) access type
+	 */
+	ldr r0, =0x43F00000
+	ldr r1, =0x0
+	str r1, [r0, #0x40]
+	str r1, [r0, #0x44]
+	str r1, [r0, #0x48]
+	str r1, [r0, #0x4C]
+	ldr r1, [r0, #0x50]
+	and r1, r1, #0x00FFFFFF
+	str r1, [r0, #0x50]
+
+	ldr r0, =0x53F00000
+	ldr r1, =0x0
+	str r1, [r0, #0x40]
+	str r1, [r0, #0x44]
+	str r1, [r0, #0x48]
+	str r1, [r0, #0x4C]
+	ldr r1, [r0, #0x50]
+	and r1, r1, #0x00FFFFFF
+	str r1, [r0, #0x50]
+.endm /* init_aips */
+
+/* RedBoot: MAX (Multi-Layer AHB Crossbar Switch) setup */
+.macro init_max
+	ldr r0, =0x43F04000
+	/* MPR - priority is M4 > M2 > M3 > M5 > M0 > M1 */
+	ldr r1, =0x00302154
+	str r1, [r0, #0x000]        /* for S0 */
+	str r1, [r0, #0x100]        /* for S1 */
+	str r1, [r0, #0x200]        /* for S2 */
+	str r1, [r0, #0x300]        /* for S3 */
+	str r1, [r0, #0x400]        /* for S4 */
+	/* SGPCR - always park on last master */
+	ldr r1, =0x10
+	str r1, [r0, #0x010]        /* for S0 */
+	str r1, [r0, #0x110]        /* for S1 */
+	str r1, [r0, #0x210]        /* for S2 */
+	str r1, [r0, #0x310]        /* for S3 */
+	str r1, [r0, #0x410]        /* for S4 */
+	/* MGPCR - restore default values */
+	ldr r1, =0x0
+	str r1, [r0, #0x800]        /* for M0 */
+	str r1, [r0, #0x900]        /* for M1 */
+	str r1, [r0, #0xA00]        /* for M2 */
+	str r1, [r0, #0xB00]        /* for M3 */
+	str r1, [r0, #0xC00]        /* for M4 */
+	str r1, [r0, #0xD00]        /* for M5 */
+.endm /* init_max */
+
+/* RedBoot: M3IF setup */
+.macro init_m3if
+	/* Configure M3IF registers */
+	ldr r1, =0xB8003000
+	/*
+	* M3IF Control Register (M3IFCTL)
+	* MRRP[0] = L2CC0 not on priority list (0 << 0)	= 0x00000000
+	* MRRP[1] = L2CC1 not on priority list (0 << 0)	= 0x00000000
+	* MRRP[2] = MBX not on priority list (0 << 0)	= 0x00000000
+	* MRRP[3] = MAX1 not on priority list (0 << 0)	= 0x00000000
+	* MRRP[4] = SDMA not on priority list (0 << 0)	= 0x00000000
+	* MRRP[5] = MPEG4 not on priority list (0 << 0)	= 0x00000000
+	* MRRP[6] = IPU1 on priority list (1 << 6)	= 0x00000040
+	* MRRP[7] = IPU2 not on priority list (0 << 0)	= 0x00000000
+	*						------------
+	*						  0x00000040
+	*/
+	ldr r0, =0x00000040
+	str r0, [r1]  /* M3IF control reg */
+.endm /* init_m3if */
+
+/* RedBoot: To support 133MHz DDR */
+.macro  init_drive_strength
+	/*
+	 * Disable maximum drive strength SDRAM/DDR lines by clearing DSE1 bits
+	 * in SW_PAD_CTL registers
+	 */
+
+	/* SDCLK */
+	ldr r1, =0x43FAC200
+	ldr r0, [r1, #0x6C]
+	bic r0, r0, #(1 << 12)
+	str r0, [r1, #0x6C]
+
+	/* CAS */
+	ldr r0, [r1, #0x70]
+	bic r0, r0, #(1 << 22)
+	str r0, [r1, #0x70]
+
+	/* RAS */
+	ldr r0, [r1, #0x74]
+	bic r0, r0, #(1 << 2)
+	str r0, [r1, #0x74]
+
+	/* CS2 (CSD0) */
+	ldr r0, [r1, #0x7C]
+	bic r0, r0, #(1 << 22)
+	str r0, [r1, #0x7C]
+
+	/* DQM3 */
+	ldr r0, [r1, #0x84]
+	bic r0, r0, #(1 << 22)
+	str r0, [r1, #0x84]
+
+	/* DQM2, DQM1, DQM0, SD31-SD0, A25-A0, MA10 (0x288..0x2DC) */
+	ldr r2, =22	/* (0x2E0 - 0x288) / 4 = 22 */
+pad_loop:
+	ldr r0, [r1, #0x88]
+	bic r0, r0, #(1 << 22)
+	bic r0, r0, #(1 << 12)
+	bic r0, r0, #(1 << 2)
+	str r0, [r1, #0x88]
+	add r1, r1, #4
+	subs r2, r2, #0x1
+	bne pad_loop
+.endm /* init_drive_strength */
+
+/* CPLD on CS4 setup */
+.macro init_cs4
+	ldr r0, =WEIM_BASE
+	ldr r1, =0x0000D843
+	str r1, [r0, #0x40]
+	ldr r1, =0x22252521
+	str r1, [r0, #0x44]
+	ldr r1, =0x22220A00
+	str r1, [r0, #0x48]
+.endm /* init_cs4 */
+
+.globl lowlevel_init
+lowlevel_init:
+
+	/* Redboot initializes very early AIPS, what for?
+	 * Then it also initializes Multi-Layer AHB Crossbar Switch,
+	 * M3IF */
+	/* Also setup the Peripheral Port Remap register inside the core */
+	ldr r0, =0x40000015        /* start from AIPS 2GB region */
+	mcr p15, 0, r0, c15, c2, 4
+
+	init_aips
+
+	init_max
+
+	init_m3if
+
+	init_drive_strength
+
+	init_cs4
+
+	/* Image Processing Unit: */
+	/* Too early to switch display on? */
+	REG	IPU_CONF, IPU_CONF_DI_EN	/* Switch on Display Interface */
+	/* Clock Control Module: */
+	REG	CCM_CCMR, 0x074B0BF5		/* Use CKIH, MCU PLL off */
+
+	DELAY 0x40000
+
+	REG	CCM_CCMR, 0x074B0BF5 | CCMR_MPE			/* MCU PLL on */
+	REG	CCM_CCMR, (0x074B0BF5 | CCMR_MPE) & ~CCMR_MDS	/* Switch to MCU PLL */
+
+	/* PBC CPLD on CS4 */
+	mov	r1, #CS4_BASE
+	ldrh	r1, [r1, #0x2]
+	/* Is 27MHz switch set? */
+	ands	r1, r1, #0x16
+
+	/* 532-133-66.5 */
+	ldr	r0, =CCM_BASE
+	ldr	r1, =0xFF871D58
+	/* PDR0 */
+	str	r1, [r0, #0x4]
+	ldreq	r1, MPCTL_PARAM_532
+	ldrne	r1, MPCTL_PARAM_532_27
+	/* MPCTL */
+	str	r1, [r0, #0x10]
+
+	/* Set UPLL=240MHz, USB=60MHz */
+	ldr	r1, =0x49FCFE7F
+	/* PDR1 */
+	str	r1, [r0, #0x8]
+	ldreq	r1, UPCTL_PARAM_240
+	ldrne	r1, UPCTL_PARAM_240_27
+	/* UPCTL */
+	str	r1, [r0, #0x14]
+	/* default CLKO to 1/8 of the ARM core */
+	mov	r1, #0x000002C0
+	add	r1, r1, #0x00000006
+	/* COSR */
+	str	r1, [r0, #0x1c]
+
+	/* RedBoot sets 0x1ff, 7, 3, 5, 1, 3, 0 */
+/*	REG	CCM_PDR0, PDR0_CSI_PODF(0x1ff) | PDR0_PER_PODF(7) | PDR0_HSP_PODF(2) | PDR0_NFC_PODF(6) | PDR0_IPG_PODF(1) | PDR0_MAX_PODF(2) | PDR0_MCU_PODF(0)*/
+
+	/* Redboot: 0, 51, 10, 12 / 0, 14, 9, 13 */
+/*	REG	CCM_MPCTL, PLL_PD(0) | PLL_MFD(0x33) | PLL_MFI(7) | PLL_MFN(0x23)*/
+	/* Default: 1, 4, 12, 1 */
+	REG	CCM_SPCTL, PLL_PD(1) | PLL_MFD(4) | PLL_MFI(12) | PLL_MFN(1)
+
+	/* B8xxxxxx - NAND, 8xxxxxxx - CSD0 RAM */
+	REG	0xB8001010, 0x00000004
+	REG	0xB8001004, 0x006ac73a
+	REG	0xB8001000, 0x92100000
+	REG	0x80000f00, 0x12344321
+	REG	0xB8001000, 0xa2100000
+	REG	0x80000000, 0x12344321
+	REG	0x80000000, 0x12344321
+	REG	0xB8001000, 0xb2100000
+	REG8	0x80000033, 0xda
+	REG8	0x81000000, 0xff
+	REG	0xB8001000, 0x82226080
+	REG	0x80000000, 0xDEADBEEF
+	REG	0xB8001010, 0x0000000c
+
+	mov	pc, lr
+
+MPCTL_PARAM_532:
+	.word (((1-1) << 26) + ((52-1) << 16) + (10 << 10) + (12 << 0))
+MPCTL_PARAM_532_27:
+	.word (((1-1) << 26) + ((15-1) << 16) + (9  << 10) + (13 << 0))
+UPCTL_PARAM_240:
+	.word (((2-1) << 26) + ((13-1) << 16) + (9  << 10) + (3  << 0))
+UPCTL_PARAM_240_27:
+	.word (((2-1) << 26) + ((9 -1) << 16) + (8  << 10) + (8  << 0))
diff --git a/board/mx31ads/mx31ads.c b/board/mx31ads/mx31ads.c
new file mode 100644
index 0000000..a92adb7
--- /dev/null
+++ b/board/mx31ads/mx31ads.c
@@ -0,0 +1,95 @@
+/*
+ * Copyright (C) 2008, Guennadi Liakhovetski <lg 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 <common.h>
+#include <asm/io.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)
+{
+	int i;
+#if 0
+	/* CS0: Nor Flash */
+	/*
+	 * These are values from the RedBoot sources by Freescale. However,
+	 * under U-Boot with this configuration 32-bit accesses don't work,
+	 * lower 16 bits of data are read twice for each 32-bit read.
+	 */
+	__REG(CSCR_U(0)) = 0x23524E80;
+	__REG(CSCR_L(0)) = 0x10000D03; /* WRAP bit (1) is suspicious here, but
+					* disabling it doesn't help either */
+	__REG(CSCR_A(0)) = 0x00720900;
+#endif
+
+	/* 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_RTS1__UART1_CTS_B);
+
+	/* PBC setup */
+	/* Enable UART transceivers also reset the Ethernet/external UART */
+	readw(CS4_BASE + 4);
+
+	writew(0x8023, CS4_BASE + 4);
+
+	/* RedBoot also has an empty loop with 100000 iterations here -
+	 * clock doesn't run yet */
+	for (i = 0; i < 100000; i++)
+		;
+
+	/* Clear the reset, toggle the LEDs */
+	writew(0xDF, CS4_BASE + 6);
+
+	/* clock still doesn't run */
+	for (i = 0; i < 100000; i++)
+		;
+
+	/* See 1.5.4 in IMX31ADSE_PERI_BUS_CNTRL_CPLD_RM.pdf */
+	readb(CS4_BASE + 8);
+	readb(CS4_BASE + 7);
+	readb(CS4_BASE + 8);
+	readb(CS4_BASE + 7);
+
+	gd->bd->bi_arch_number = 447;		/* board id for linux */
+	gd->bd->bi_boot_params = 0x80000100;	/* adress of boot parameters */
+
+	return 0;
+}
+
+int checkboard (void)
+{
+	printf("Board: MX31ADS\n");
+	return 0;
+}
+
diff --git a/board/imx31_litekit/u-boot.lds b/board/mx31ads/u-boot.lds
similarity index 100%
copy from board/imx31_litekit/u-boot.lds
copy to board/mx31ads/u-boot.lds
diff --git a/include/asm-arm/arch-mx31/mx31-regs.h b/include/asm-arm/arch-mx31/mx31-regs.h
index c004478..e9c7671 100644
--- a/include/asm-arm/arch-mx31/mx31-regs.h
+++ b/include/asm-arm/arch-mx31/mx31-regs.h
@@ -133,6 +133,20 @@
 #define MUX_CSPI2_MOSI__I2C2_SCL ((MUX_CTL_ALT1 << 8) | MUX_CTL_CSPI2_MOSI)
 #define MUX_CSPI2_MISO__I2C2_SCL ((MUX_CTL_ALT1 << 8) | MUX_CTL_CSPI2_MISO)
 
+/*
+ * Memory regions and CS
+ */
+#define IPU_MEM_BASE	0x70000000
+#define CSD0_BASE	0x80000000
+#define CSD1_BASE	0x90000000
+#define CS0_BASE	0xA0000000
+#define CS1_BASE	0xA8000000
+#define CS2_BASE	0xB0000000
+#define CS3_BASE	0xB2000000
+#define CS4_BASE	0xB4000000
+#define CS4_PSRAM_BASE	0xB5000000
+#define CS5_BASE	0xB6000000
+#define PCMCIA_MEM_BASE	0xC0000000
 
 #endif /* __ASM_ARCH_MX31_REGS_H */
 
diff --git a/include/configs/mx31ads.h b/include/configs/mx31ads.h
new file mode 100644
index 0000000..49e733b
--- /dev/null
+++ b/include/configs/mx31ads.h
@@ -0,0 +1,157 @@
+/*
+ * Copyright (C) 2008, Guennadi Liakhovetski <lg at denx.de>
+ *
+ * Configuration settings for the MX31ADS Freescale board.
+ *
+ * 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	/* RedBoot says 26MHz */
+#define CONFIG_MX31_CLK32	32000
+
+#define CONFIG_DISPLAY_CPUINFO
+#define CONFIG_DISPLAY_BOARDINFO
+
+#define CONFIG_FIT			1
+#define CONFIG_FIT_VERBOSE		1
+
+#define CONFIG_CMDLINE_TAG		1	/* enable passing of ATAGs */
+#define CONFIG_SETUP_MEMORY_TAGS	1
+#define CONFIG_INITRD_TAG		1
+
+/*
+ * Size of malloc() pool
+ */
+#define CFG_MALLOC_LEN		(CFG_ENV_SIZE + 128 * 1024)
+#define CFG_GBL_DATA_SIZE	128  /* size in bytes reserved for initial data */
+
+/*
+ * Hardware drivers
+ */
+
+#define CONFIG_MX31_UART	1
+#define CFG_MX31_UART1		1
+
+/* 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_BOOTDELAY	3
+
+#define CONFIG_NETMASK		255.255.255.0
+#define CONFIG_IPADDR		192.168.23.168
+#define CONFIG_SERVERIP		192.168.23.2
+
+#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 0x80000000 uImage-mx31; bootm\0"		\
+	"prg_uboot=tftpboot 0x80000000 u-boot-mx31ads.bin; protect off 0xa0000000 0xa001ffff; erase 0xa0000000 0xa001ffff; cp.b 0x80000000 0xa0000000 $(filesize)\0"
+
+
+#define CONFIG_DRIVER_CS8900	1
+#define CS8900_BASE		0xb4020300
+#define CS8900_BUS16		1	/* the Linux driver does accesses as shorts */
+
+/*
+ * Miscellaneous configurable options
+ */
+#define CFG_LONGHELP		/* undef to save memory */
+#define CFG_PROMPT		"=> "
+#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	0		/* memtest works on */
+#define CFG_MEMTEST_END		0x10000
+
+#undef	CFG_CLKS_IN_HZ		/* everything, incl board info, in Hz */
+
+#define CFG_LOAD_ADDR		CSD0_BASE	/* default load address */
+
+#define CFG_HZ			32000
+
+#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
+ */
+#define CFG_FLASH_BASE		CS0_BASE
+#define CFG_MAX_FLASH_BANKS	1		/* max number of memory banks */
+#define CFG_MAX_FLASH_SECT	262		/* max number of sectors on one chip */
+#define CFG_MONITOR_BASE	CFG_FLASH_BASE	/* Monitor at beginning of flash */
+#define CFG_MONITOR_LEN		(128 * 1024)	/* Reserve 128KiB */
+
+#define	CFG_ENV_IS_IN_FLASH	1
+#define CFG_ENV_SECT_SIZE	(32 * 1024)
+#define CFG_ENV_SIZE		CFG_ENV_SECT_SIZE
+/* S29WS256N NOR flash has 4 32KiB small sectors at the beginning and at the end.
+ * The rest of 32MiB is in 128KiB big sectors. U-Boot occupies the low 4 sectors,
+ * if we put environment next to it, we will have to occupy 128KiB for it.
+ * Putting it at the top of flash we use only 32KiB. */
+#define CFG_ENV_ADDR		(CFG_MONITOR_BASE + 32 * 1024 * 1024 - CFG_ENV_SIZE)
+
+/*-----------------------------------------------------------------------
+ * CFI FLASH driver setup
+ */
+#define CFG_FLASH_CFI			1 /* Flash memory is CFI compliant */
+#define CFG_FLASH_CFI_DRIVER		1 /* Use drivers/cfi_flash.c */
+//#define CFG_FLASH_USE_BUFFER_WRITE	1 /* Use buffered writes (~10x faster) */
+#define CFG_FLASH_PROTECTION		1 /* Use hardware sector protection */
+
+/*
+ * JFFS2 partitions
+ */
+#undef CONFIG_JFFS2_CMDLINE
+#define CONFIG_JFFS2_DEV	"nor0"
+
+#endif /* __CONFIG_H */
-- 
1.5.4





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