Commit f54ebdfa authored by wdenk's avatar wdenk
Browse files

Add auto-update code for TRAB board using USB memory sticks

parent 34b3049a
......@@ -2,6 +2,8 @@
Changes for U-Boot 1.0.0:
======================================================================
* Add auto-update code for TRAB board using USB memory sticks
* disable MPC5200 bus pipelining as workaround for bus contention
* Modify XLB arbiter priorities on MPC5200 so all devices use same
......
......@@ -796,7 +796,7 @@ shannon_config : unconfig
## ARM92xT Systems
#########################################################################
xtract_trab = $(subst _big_flash,,$(subst _config,,$1))
xtract_trab = $(subst _old,,$(subst _config,,$1))
omap1510inn_config : unconfig
@./mkconfig $(@:_config=) arm arm925t omap1510inn
......@@ -811,11 +811,11 @@ smdk2410_config : unconfig
@./mkconfig $(@:_config=) arm arm920t smdk2410
trab_config \
trab_big_flash_config: unconfig
trab_old_config: unconfig
@ >include/config.h
@[ -z "$(findstring _big_flash,$@)" ] || \
{ echo "#define CONFIG_BIG_FLASH" >>include/config.h ; \
echo "... with big flash support" ; \
@[ -z "$(findstring _old,$@)" ] || \
{ echo "#define CONFIG_OLD_VERSION" >>include/config.h ; \
echo "... with small memory configuration" ; \
}
@./mkconfig -a $(call xtract_trab,$@) arm arm920t trab
......
......@@ -25,7 +25,7 @@ include $(TOPDIR)/config.mk
LIB = lib$(BOARD).a
OBJS := trab.o flash.o vfd.o cmd_trab.o memory.o tsc2000.o
OBJS := trab.o flash.o vfd.o cmd_trab.o memory.o tsc2000.o auto_update.o
SOBJS := memsetup.o
gcclibdir := $(shell dirname `$(CC) -print-libgcc-file-name`)
......
/*
* (C) Copyright 2003
* 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
*/
#include <common.h>
#include <command.h>
#include <malloc.h>
#include <image.h>
#include <asm/byteorder.h>
#include <usb.h>
#ifdef CFG_HUSH_PARSER
#include <hush.h>
#endif
#ifdef CONFIG_AUTO_UPDATE
#ifndef CONFIG_USB_OHCI
#error "must define CONFIG_USB_OHCI"
#endif
#ifndef CONFIG_USB_STORAGE
#error "must define CONFIG_USB_STORAGE"
#endif
#ifndef CFG_HUSH_PARSER
#error "must define CFG_HUSH_PARSER"
#endif
#if !(CONFIG_COMMANDS & CFG_CMD_FAT)
#error "must define CFG_CMD_FAT"
#endif
/*
* Check whether a USB memory stick is plugged in.
* If one is found:
* 1) try to do an MSDOS ls
* 2) if preinst.img is found and is not 0 length, load it into
* memory and run it (how to check beforehand if it's a
* valid HUSH command file?)
* 3)
* 4)
* 5)
* 6)
* 7)
* 8)
* 9)
* 10)
* 11)
* 12)
*/
#undef AU_DEBUG
#undef debug
#ifdef AU_DEBUG
#define debug(fmt,args...) printf (fmt ,##args)
#else
#define debug(fmt,args...)
#endif /* AU_DEBUG */
/* possible names of files on the USB stick. */
#define AU_PREPARE "prepare.img"
#define AU_PREINST "preinst.img"
#define AU_FIRMWARE "firmware.img"
#define AU_KERNEL "kernel.img"
#define AU_APP "app.img"
#define AU_DISK "disk.img"
#define AU_POSTINST "postinst.img"
/* layout of the FLASH. ST = start address, ND = end address. */
#ifndef CONFIG_OLD_VERSION /* 16 MB Flash, 32 MB RAM */
#define AU_FL_FIRMWARE_ST 0x00000000
#define AU_FL_FIRMWARE_ND 0x0009FFFF
#define AU_FL_VFD_ST 0x000A0000
#define AU_FL_VFD_ND 0x000BFFFF
#define AU_FL_KERNEL_ST 0x000C0000
#define AU_FL_KERNEL_ND 0x001BFFFF
#define AU_FL_APP_ST 0x001C0000
#define AU_FL_APP_ND 0x005BFFFF
#define AU_FL_DISK_ST 0x005C0000
#define AU_FL_DISK_ND 0x00FFFFFF
#else /* 8 MB Flash, 16 MB RAM */
#define AU_FL_FIRMWARE_ST 0x00000000
#define AU_FL_FIRMWARE_ND 0x0003FFFF
#define AU_FL_KERNEL_ST 0x00040000
#define AU_FL_KERNEL_ND 0x0011FFFF
#define AU_FL_APP_ST 0x00120000
#define AU_FL_APP_ND 0x003FFFFF
#define AU_FL_DISK_ST 0x00400000
#define AU_FL_DISK_ND 0x007DFFFF
#define AU_FL_VFD_ST 0x007E0000
#define AU_FL_VFD_ND 0x007FFFFF
#endif /* CONFIG_OLD_VERSION */
/* a structure with the offsets to values in the EEPROM */
struct eeprom_layout
{
unsigned int time;
unsigned int size;
unsigned int dcrc;
};
/* layout of the EEPROM - offset from the start. All entries are 32 bit. */
#define AU_EEPROM_TIME_PREINST 64
#define AU_EEPROM_SIZE_PREINST 68
#define AU_EEPROM_DCRC_PREINST 72
#define AU_EEPROM_TIME_FIRMWARE 76
#define AU_EEPROM_SIZE_FIRMWARE 80
#define AU_EEPROM_DCRC_FIRMWARE 84
#define AU_EEPROM_TIME_KERNEL 88
#define AU_EEPROM_SIZE_KERNEL 92
#define AU_EEPROM_DCRC_KERNEL 96
#define AU_EEPROM_TIME_APP 100
#define AU_EEPROM_SIZE_APP 104
#define AU_EEPROM_DCRC_APP 108
#define AU_EEPROM_TIME_DISK 112
#define AU_EEPROM_SIZE_DISK 116
#define AU_EEPROM_DCRC_DISK 120
#define AU_EEPROM_TIME_POSTINST 124
#define AU_EEPROM_SIZE_POSTINST 128
#define AU_EEPROM_DCRC_POSTINST 132
static int au_usb_stor_curr_dev; /* current device */
/* max. number of files which could interest us */
#define AU_MAXFILES 7
/* pointers to file names */
char *aufile[AU_MAXFILES];
/* sizes of flash areas for each file */
long ausize[AU_MAXFILES];
/* offsets into the EEEPROM */
struct eeprom_layout auee_off[AU_MAXFILES] = { \
{0}, \
{AU_EEPROM_TIME_PREINST, AU_EEPROM_SIZE_PREINST, AU_EEPROM_DCRC_PREINST,}, \
{AU_EEPROM_TIME_FIRMWARE, AU_EEPROM_SIZE_FIRMWARE, AU_EEPROM_DCRC_FIRMWARE,}, \
{AU_EEPROM_TIME_KERNEL, AU_EEPROM_SIZE_KERNEL, AU_EEPROM_DCRC_KERNEL,}, \
{AU_EEPROM_TIME_APP, AU_EEPROM_SIZE_APP, AU_EEPROM_DCRC_APP,}, \
{AU_EEPROM_TIME_DISK, AU_EEPROM_SIZE_DISK, AU_EEPROM_DCRC_DISK,}, \
{AU_EEPROM_TIME_POSTINST, AU_EEPROM_SIZE_POSTINST, AU_EEPROM_DCRC_POSTINST,} \
};
/* index of each file in the above array */
#define IDX_PREPARE 0
#define IDX_PREINST 1
#define IDX_FIRMWARE 2
#define IDX_KERNEL 3
#define IDX_APP 4
#define IDX_DISK 5
#define IDX_POSTINST 6
/* where to load files into memory */
#define LOAD_ADDR ((unsigned char *)0x0c100000)
/* the disk is the largest image */
#define MAX_LOADSZ ausize[IDX_DISK]
/* externals */
extern int fat_register_device(block_dev_desc_t *, int);
extern int file_fat_detectfs(void);
extern long file_fat_read(const char *, void *, unsigned long);
extern int i2c_read (unsigned char, unsigned int, int , unsigned char* , int);
extern int i2c_write (uchar, uint, int , uchar* , int);
#ifdef CONFIG_VFD
extern int trab_vfd (ulong);
extern int transfer_pic(unsigned char, unsigned char *, int, int);
#endif
extern int i2c_write_multiple (uchar, uint, int, uchar *, int);
extern int i2c_read_multiple (uchar, uint, int, uchar *, int);
int
au_check_valid(int idx, long nbytes)
{
image_header_t *hdr;
unsigned long checksum;
unsigned char buf[4];
hdr = (image_header_t *)LOAD_ADDR;
/* check the easy ones first */
#ifdef CHECK_VALID_DEBUG
printf("magic %#x %#x ", ntohl(hdr->ih_magic), IH_MAGIC);
printf("arch %#x %#x ", hdr->ih_arch, IH_CPU_ARM);
printf("size %#x %#lx ", ntohl(hdr->ih_size), nbytes);
printf("type %#x %#x ", hdr->ih_type, IH_TYPE_KERNEL);
#endif
if (ntohl(hdr->ih_magic) != IH_MAGIC ||
hdr->ih_arch != IH_CPU_ARM ||
nbytes < ntohl(hdr->ih_size)) {
printf ("Image %s Bad MAGIC or ARCH or SIZE\n", aufile[idx]);
return -1;
}
/* check the hdr CRC */
checksum = ntohl(hdr->ih_hcrc);
hdr->ih_hcrc = 0;
if (crc32 (0, (char *)hdr, sizeof(*hdr)) != checksum) {
printf ("Image %s Bad Header Checksum\n", aufile[idx]);
return -1;
}
/* check the data CRC */
checksum = ntohl(hdr->ih_dcrc);
if (crc32 (0, (char *)(LOAD_ADDR + sizeof(*hdr)), ntohl(hdr->ih_size))
!= checksum)
{
printf ("Image %s Bad Data Checksum\n", aufile[idx]);
return -1;
}
/* check the type - could do this all in one gigantic if() */
if ((idx == IDX_FIRMWARE) && (hdr->ih_type != IH_TYPE_FIRMWARE)) {
printf ("Image %s Wrong Type\n", aufile[idx]);
return -1;
}
if ((idx == IDX_KERNEL) && (hdr->ih_type != IH_TYPE_KERNEL)) {
printf ("Image %s Wrong Type\n", aufile[idx]);
return -1;
}
if ((idx == IDX_DISK || idx == IDX_APP)
&& (hdr->ih_type != IH_TYPE_RAMDISK))
{
printf ("Image %s Wrong Type\n", aufile[idx]);
return -1;
}
if ((idx == IDX_PREPARE || idx == IDX_PREINST || idx == IDX_POSTINST)
&& (hdr->ih_type != IH_TYPE_SCRIPT))
{
printf ("Image %s Wrong Type\n", aufile[idx]);
return -1;
}
/* special case for prepare.img */
if (idx == IDX_PREPARE)
return 0;
/* check the size does not exceed space in flash */
if ((ausize[idx] != 0) && (ausize[idx] < ntohl(hdr->ih_size))) {
printf ("Image %s is bigger than FLASH\n", aufile[idx]);
return -1;
}
/* check the time stamp from the EEPROM */
/* read it in */
i2c_read_multiple(0x54, auee_off[idx].time, 1, buf, sizeof(buf));
#ifdef CHECK_VALID_DEBUG
printf("buf[0] %#x buf[1] %#x buf[2] %#x buf[3] %#x as int %#x time %#x\n",
buf[0], buf[1], buf[2], buf[3], *((unsigned int *)buf), ntohl(hdr->ih_time));
#endif
/* check it */
if (*((unsigned int *)buf) >= ntohl(hdr->ih_time)) {
printf ("Image %s is too old\n", aufile[idx]);
return -1;
}
return 0;
}
/* power control defines */
#define CPLD_VFD_BK ((volatile char *)0x04038002)
#define POWER_OFF (1 << 1)
int
au_do_update(int idx)
{
image_header_t *hdr;
char *addr;
hdr = (image_header_t *)LOAD_ADDR;
/* disable the power switch */
*CPLD_VFD_BK |= POWER_OFF;
/* execute a script */
if (hdr->ih_type == IH_TYPE_SCRIPT) {
addr = (char *)((char *)hdr + sizeof(*hdr) + 8);
parse_string_outer(addr,
FLAG_PARSE_SEMICOLON | FLAG_EXIT_FROM_LOOP);
return 0;
}
return 0;
}
int
au_update_eeprom(int idx)
{
image_header_t *hdr;
hdr = (image_header_t *)LOAD_ADDR;
/* enable the power switch */
*CPLD_VFD_BK &= ~POWER_OFF;
return 0;
}
/*
* this is called from board_init() after the hardware has been set up
* and is usable. That seems like a good time to do this.
* Right now the return value is ignored.
*/
int
do_auto_update(void)
{
block_dev_desc_t *stor_dev;
long sz;
int i, res, bitmap_first;
char *env;
#ifdef ERASE_EEPROM
int arr[18];
memset(arr, 0, sizeof(arr));
i2c_write_multiple(0x54, 64, 1, arr, sizeof(arr));
#endif
au_usb_stor_curr_dev = -1;
/* start USB */
if (usb_stop() < 0) {
debug ("usb_stop failed\n");
return -1;
}
if (usb_init() < 0) {
debug ("usb_init failed\n");
return -1;
}
/*
* check whether a storage device is attached (assume that it's
* a USB memory stick, since nothing else should be attached).
*/
au_usb_stor_curr_dev = usb_stor_scan(1);
if (au_usb_stor_curr_dev == -1) {
debug ("No device found. Not initialized?\n");
return -1;
}
/* check whether it has a partition table */
stor_dev = usb_stor_get_dev(au_usb_stor_curr_dev);
if (stor_dev->type == DEV_TYPE_UNKNOWN) {
debug ("uknown device type\n");
return -1;
}
if (fat_register_device(stor_dev, 1) != 0) {
debug ("Unable to use USB %d:%d for fatls\n",
au_usb_stor_curr_dev, 1);
return -1;
}
if (file_fat_detectfs() != 0) {
debug ("file_fat_detectfs failed\n");
}
/* initialize the array of file names */
memset(aufile, 0, sizeof(aufile));
aufile[IDX_PREPARE] = AU_PREPARE;
aufile[IDX_PREINST] = AU_PREINST;
aufile[IDX_FIRMWARE] = AU_FIRMWARE;
aufile[IDX_KERNEL] = AU_KERNEL;
aufile[IDX_APP] = AU_APP;
aufile[IDX_DISK] = AU_DISK;
aufile[IDX_POSTINST] = AU_POSTINST;
/* initialize the array of flash sizes */
memset(ausize, 0, sizeof(ausize));
ausize[IDX_FIRMWARE] = (AU_FL_FIRMWARE_ND + 1) - AU_FL_FIRMWARE_ST;
ausize[IDX_KERNEL] = (AU_FL_KERNEL_ND + 1) - AU_FL_KERNEL_ST;
ausize[IDX_APP] = (AU_FL_APP_ND + 1) - AU_FL_APP_ST;
ausize[IDX_DISK] = (AU_FL_DISK_ND + 1) - AU_FL_DISK_ST;
bitmap_first = 0;
/* just loop thru all the possible files */
for (i = 0; i < AU_MAXFILES; i++) {
sz = file_fat_read(aufile[i], LOAD_ADDR, MAX_LOADSZ);
debug ("read %s sz %ld hdr %d\n",
aufile[i], sz, sizeof(image_header_t));
if (sz <= 0 || sz <= sizeof(image_header_t)) {
debug ("%s not found\n", aufile[i]);
continue;
}
if (au_check_valid(i, sz) < 0) {
debug ("%s not valid\n", aufile[i]);
continue;
}
#ifdef CONFIG_VFD
/* now that we have a valid file we can display the */
/* bitmap. */
if (bitmap_first == 0) {
env = getenv("bitmap2");
if (env == NULL) {
trab_vfd(0);
} else {
/* not so simple - bitmap2 is supposed to */
/* contain the address of the bitmap */
env = (char *)simple_strtoul(env, NULL, 16);
/* NOTE: these are taken from vfd_logo.h. If that file changes then */
/* these defines MUST also be updated! These may be wrong for bitmap2. */
#define VFD_LOGO_WIDTH 112
#define VFD_LOGO_HEIGHT 72
/* must call transfer_pic directly */
transfer_pic(3, env, VFD_LOGO_HEIGHT, VFD_LOGO_WIDTH);
}
bitmap_first = 1;
}
#endif
/* this is really not a good idea, but it's what the */
/* customer wants. */
do {
res = au_do_update(i);
} while (res < 0);
au_update_eeprom(i);
}
return 0;
}
#endif /* CONFIG_AUTO_UPDATE */
......@@ -111,6 +111,10 @@ int do_vcc5v (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]);
int do_burn_in (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]);
int do_contact_temp (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]);
int do_burn_in_status (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]);
int i2c_write_multiple (uchar chip, uint addr, int alen,
uchar *buffer, int len);
int i2c_read_multiple (uchar chip, uint addr, int alen,
uchar *buffer, int len);
/* helper functions */
static void adc_init (void);
......@@ -123,10 +127,6 @@ static int test_rotary_switch (void);
static int test_sram (void);
static int test_eeprom (void);
static int test_contact_temp (void);
static int i2c_write_multiple (uchar chip, uint addr, int alen,
uchar *buffer, int len);
static int i2c_read_multiple (uchar chip, uint addr, int alen,
uchar *buffer, int len);
static void led_set (unsigned int);
static void led_blink (void);
static void led_init (void);
......@@ -579,8 +579,8 @@ static int test_contact_temp (void)
}
static int i2c_write_multiple (uchar chip, uint addr, int alen,
uchar *buffer, int len)
int i2c_write_multiple (uchar chip, uint addr, int alen,
uchar *buffer, int len)
{
int i;
......@@ -608,8 +608,8 @@ static int i2c_write_multiple (uchar chip, uint addr, int alen,
}
static int i2c_read_multiple (uchar chip, uint addr, int alen,
uchar *buffer, int len)
int i2c_read_multiple ( uchar chip, uint addr, int alen,
uchar *buffer, int len)
{
int i;
......
......@@ -169,6 +169,12 @@ int misc_init_r (void)
uchar *str;
int i;
#ifdef CONFIG_AUTO_UPDATE
extern int do_auto_update(void);
/* this has priority over all else */
do_auto_update();
#endif
for (i = 0; i < KEYBD_KEY_NUM; ++i) {
keybd_env[i] = '0' + ((kbd_data >> i) & 1);
}
......
......@@ -188,7 +188,7 @@ int usb_stor_scan(int mode)
memset(usb_stor_buf, 0, sizeof(usb_stor_buf));
if(mode==1) {
printf("scanning bus for storage devices...\n");
printf(" scanning bus for storage devices...\n");
}
usb_disable_asynch(1); /* asynch transfer not allowed */
......
......@@ -30,7 +30,7 @@
#elif CONFIG_SERIAL2
# if defined(CONFIG_TRAB)
# #error "TRAB supports only CONFIG_SERIAL1"
# error "TRAB supports only CONFIG_SERIAL1"
# endif
#define UART_NR S3C24X0_UART1
......
......@@ -71,6 +71,7 @@
#define CONFIG_NET_MULTI 1
#define CONFIG_EEPRO100 1
#define CFG_RX_ETH_BUFFER 8 /* use 8 rx buffer on eepro100 */
#define CONFIG_NS8382X 1
#define ADD_PCI_CMD CFG_CMD_PCI
......
......@@ -42,6 +42,9 @@
#undef CONFIG_TRAB_50MHZ /* run the CPU at 50 MHz */
#define LITTLEENDIAN 1 /* used by usb_ohci.c */
/* automatic software updates (see board/trab/auto_update.c) */
#define CONFIG_AUTO_UPDATE 1
/* input clock of PLL */
#define CONFIG_SYS_CLK_FREQ 12000000 /* TRAB has 12 MHz input clock */
......@@ -176,7 +179,7 @@
#define CONFIG_SERVERIP 192.168.3.1
#define CONFIG_BOOTCOMMAND "run flash_nfs"
#ifndef CONFIG_BIG_FLASH
#ifndef CONFIG_OLD_VERSION /* current config: 16 MB flash, 32 MB RAM */
#ifdef CFG_HUSH_PARSER
#define CONFIG_EXTRA_ENV_SETTINGS \
"nfs_args=setenv bootargs root=/dev/nfs rw " \
......@@ -186,14 +189,15 @@
"add_net=setenv bootargs $bootargs ethaddr=$ethaddr " \
"ip=$ipaddr:$serverip:$gatewayip:$netmask:$hostname::off\0" \
"add_misc=setenv bootargs $bootargs console=ttyS0 panic=1\0" \
"load=tftp 0xC100000 /tftpboot/TRAB/u-boot.bin\0" \
"update=protect off 1:0-8;era 1:0-8;cp.b 0xc100000 0 $filesize;" \
"setenv filesize;saveenv\0" \
"u-boot=/tftpboot/TRAB/u-boot.bin\0" \
"load=tftp C100000 ${u-boot}\0" \
"update=protect off 0 5FFFF;era 0 5FFFF;" \
"cp.b C100000 0 $filesize\0" \
"loadfile=/tftpboot/TRAB/uImage\0" \
"loadaddr=c400000\0" \
"net_load=tftpboot $loadaddr $loadfile\0" \
"net_nfs=run net_load nfs_args add_net add_misc;bootm\0" \
"kernel_addr=00040000\0" \
"kernel_addr=000C0000\0" \
"flash_nfs=run nfs_args add_net add_misc;bootm $kernel_addr\0" \
"mdm_init1=ATZ\0" \
"mdm_init2=ATS0=1\0" \
......@@ -207,20 +211,21 @@
"add_net=setenv bootargs $(bootargs) ethaddr=$(ethaddr) " \
"ip=$(ipaddr):$(serverip):$(gatewayip):$(netmask):$(hostname)::off\0" \
"add_misc=setenv bootargs $(bootargs) console=ttyS0 panic=1\0" \
"load=tftp 0xC100000 /tftpboot/TRAB/u-boot.bin\0" \
"update=protect off 1:0-8;era 1:0-8;cp.b 0xc100000 0 $(filesize);" \
"setenv filesize;saveenv\0" \
"u-boot=/tftpboot/TRAB/u-boot.bin\0" \
"load=tftp C100000 $(u-boot)\0" \
"update=protect off 0 5FFFF;era 0 5FFFF;" \
"cp.b C100000 0 $(filesize)\0" \
"loadfile=/tftpboot/TRAB/uImage\0" \
"loadaddr=c400000\0" \
"net_load=tftpboot $(loadaddr) $(loadfile)\0" \
"net_nfs=run net_load nfs_args add_net add_misc;bootm\0" \
"kernel_addr=00040000\0" \
"kernel_addr=000C0000\0" \
"flash_nfs=run nfs_args add_net add_misc;bootm $(kernel_addr)\0" \
"mdm_init1=ATZ\0" \
"mdm_init2=ATS0=1\0" \
"mdm_flow_control=rts/cts\0"
#endif /* CFG_HUSH_PARSER */
#else /* CONFIG_BIG_FLASH */
#endif /* CFG_HUSH_PARSER */
#else /* CONFIG_OLD_VERSION => 8 MB flash, 16 MB RAM */
#ifdef CFG_HUSH_PARSER
#define CONFIG_EXTRA_ENV_SETTINGS \
"nfs_args=setenv bootargs root=/dev/nfs rw " \
......@@ -230,13 +235,16 @@
"add_net=setenv bootargs $bootargs ethaddr=$ethaddr " \
"ip=$ipaddr:$serverip:$gatewayip:$netmask:$hostname::off\0" \
"add_misc=setenv bootargs $bootargs console=ttyS0 panic=1\0" \
"load=tftp 0xC100000 /tftpboot/TRAB/u-boot.bin\0" \
"update=protect off 1:0;era 1:0;cp.b 0xc100000 0 $filesize\0" \
"u-boot=/tftpboot/TRAB/u-boot.bin-old\0" \
"load=tftp C100000 ${u-boot}\0" \
"update=protect off 0 3FFFF;era 0 3FFFF;" \
"cp.b C100000 0 $filesize;" \
"setenv filesize;saveenv\0" \
"loadfile=/tftpboot/TRAB/uImage\0" \
"loadaddr=c400000\0" \
"loadaddr=C400000\0" \
"net_load=tftpboot $loadaddr $loadfile\0" \
"net_nfs=run net_load nfs_args add_net add_misc;bootm\0" \
"kernel_addr=00040000\0" \
"kernel_addr=000C0000\0" \
"flash_nfs=run nfs_args add_net add_misc;bootm $kernel_addr\0" \