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Support for the MX31ADS evaluation board from Freescale

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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@denx.de>
This commit is contained in:
Guennadi Liakhovetski 2008-04-14 10:53:12 +02:00 committed by Wolfgang Denk
parent 5e3dca577b
commit b5dc9b304d
9 changed files with 666 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
MAKEALL
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@ -510,6 +510,7 @@ LIST_ARM11=" \
apollon \
imx31_litekit \
imx31_phycore \
mx31ads \
"
#########################################################################

3
Makefile
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@ -2636,6 +2636,9 @@ 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
#========================================================================

47
board/mx31ads/Makefile Normal file
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@ -0,0 +1,47 @@
#
# Copyright (C) 2008, Guennadi Liakhovetski <lg@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
#########################################################################

1
board/mx31ads/config.mk Normal file
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@ -0,0 +1 @@
TEXT_BASE = 0x87f00000

281
board/mx31ads/lowlevel_init.S Normal file
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@ -0,0 +1,281 @@
/*
* Copyright (C) 2008, Guennadi Liakhovetski <lg@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))

94
board/mx31ads/mx31ads.c Normal file
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@ -0,0 +1,94 @@
/*
* Copyright (C) 2008, Guennadi Liakhovetski <lg@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;
}

59
board/mx31ads/u-boot.lds Normal file
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@ -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 = .;
}

14
include/asm-arm/arch-mx31/mx31-regs.h
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@ -138,5 +138,19 @@
#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 */

166
include/configs/mx31ads.h Normal file
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@ -0,0 +1,166 @@
/*
* Copyright (C) 2008, Guennadi Liakhovetski <lg@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
/*
* Disabled for now due to build problems under Debian and a significant increase
* in the final file size: 144260 vs. 109536 Bytes.
*/
#if 0
#define CONFIG_OF_LIBFDT 1
#define CONFIG_FIT 1
#define CONFIG_FIT_VERBOSE 1
#endif
#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 */
#if 0 /* Doesn't work yet, work in progress */
#define CFG_FLASH_USE_BUFFER_WRITE 1 /* Use buffered writes (~10x faster) */
#endif
#define CFG_FLASH_PROTECTION 1 /* Use hardware sector protection */
/*
* JFFS2 partitions
*/
#undef CONFIG_JFFS2_CMDLINE
#define CONFIG_JFFS2_DEV "nor0"
#endif /* __CONFIG_H */