u-boot/board/mcc200/auto_update.c

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/*
* (C) Copyright 2006
* Wolfgang Denk, DENX Software Engineering, wd@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 <common.h>
#include <command.h>
#include <malloc.h>
#include <image.h>
#include <asm/byteorder.h>
#include <usb.h>
#include <part.h>
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#ifdef CONFIG_SYS_HUSH_PARSER
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#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 CONFIG_SYS_HUSH_PARSER
#error "must define CONFIG_SYS_HUSH_PARSER"
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#endif
#if !defined(CONFIG_CMD_FAT)
#error "must define CONFIG_CMD_FAT"
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#endif
#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_FIRMWARE "u-boot.img"
#define AU_KERNEL "kernel.img"
#define AU_ROOTFS "rootfs.img"
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struct flash_layout {
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long start;
long end;
};
/* layout of the FLASH. ST = start address, ND = end address. */
#define AU_FL_FIRMWARE_ST 0xfC000000
#define AU_FL_FIRMWARE_ND 0xfC03FFFF
#define AU_FL_KERNEL_ST 0xfC0C0000
#define AU_FL_KERNEL_ND 0xfC1BFFFF
#define AU_FL_ROOTFS_ST 0xFC1C0000
#define AU_FL_ROOTFS_ND 0xFCFBFFFF
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static int au_usb_stor_curr_dev; /* current device */
/* index of each file in the following arrays */
#define IDX_FIRMWARE 0
#define IDX_KERNEL 1
#define IDX_ROOTFS 2
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/* max. number of files which could interest us */
#define AU_MAXFILES 3
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/* pointers to file names */
char *aufile[AU_MAXFILES] = {
AU_FIRMWARE,
AU_KERNEL,
AU_ROOTFS
};
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/* sizes of flash areas for each file */
long ausize[AU_MAXFILES] = {
(AU_FL_FIRMWARE_ND + 1) - AU_FL_FIRMWARE_ST,
(AU_FL_KERNEL_ND + 1) - AU_FL_KERNEL_ST,
(AU_FL_ROOTFS_ND + 1) - AU_FL_ROOTFS_ST,
};
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/* array of flash areas start and end addresses */
struct flash_layout aufl_layout[AU_MAXFILES] = {
{ AU_FL_FIRMWARE_ST, AU_FL_FIRMWARE_ND, },
{ AU_FL_KERNEL_ST, AU_FL_KERNEL_ND, },
{ AU_FL_ROOTFS_ST, AU_FL_ROOTFS_ND, },
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};
ulong totsize;
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/* where to load files into memory */
#define LOAD_ADDR ((unsigned char *)0x00200000)
/* the root file system is the largest image */
#define MAX_LOADSZ ausize[IDX_ROOTFS]
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/*i2c address of the keypad status*/
#define I2C_PSOC_KEYPAD_ADDR 0x53
/* keypad mask */
#define KEYPAD_ROW 2
#define KEYPAD_COL 2
#define KEYPAD_MASK_LO ((1<<(KEYPAD_COL-1+(KEYPAD_ROW*3-3)))&0xFF)
#define KEYPAD_MASK_HI ((1<<(KEYPAD_COL-1+(KEYPAD_ROW*3-3)))>>8)
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/* 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 flash_sect_erase(ulong, ulong);
extern int flash_sect_protect (int, ulong, ulong);
extern int flash_write (char *, ulong, ulong);
extern int u_boot_hush_start(void);
#ifdef CONFIG_PROGRESSBAR
extern void show_progress(int, int);
extern void lcd_puts (char *);
extern void lcd_enable(void);
#endif
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int au_check_cksum_valid(int idx, long nbytes)
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{
image_header_t *hdr;
hdr = (image_header_t *)LOAD_ADDR;
#if defined(CONFIG_FIT)
if (genimg_get_format ((void *)hdr) != IMAGE_FORMAT_LEGACY) {
puts ("Non legacy image format not supported\n");
return -1;
}
#endif
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if (nbytes != image_get_image_size (hdr)) {
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printf ("Image %s bad total SIZE\n", aufile[idx]);
return -1;
}
/* check the data CRC */
if (!image_check_dcrc (hdr)) {
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printf ("Image %s bad data checksum\n", aufile[idx]);
return -1;
}
return 0;
}
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int au_check_header_valid(int idx, long nbytes)
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{
image_header_t *hdr;
unsigned long checksum, fsize;
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hdr = (image_header_t *)LOAD_ADDR;
#if defined(CONFIG_FIT)
if (genimg_get_format ((void *)hdr) != IMAGE_FORMAT_LEGACY) {
puts ("Non legacy image format not supported\n");
return -1;
}
#endif
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/* check the easy ones first */
#undef CHECK_VALID_DEBUG
#ifdef CHECK_VALID_DEBUG
printf("magic %#x %#x ", image_get_magic (hdr), IH_MAGIC);
printf("arch %#x %#x ", image_get_arch (hdr), IH_ARCH_ARM);
printf("size %#x %#lx ", image_get_data_size (hdr), nbytes);
printf("type %#x %#x ", image_get_type (hdr), IH_TYPE_KERNEL);
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#endif
if (nbytes < image_get_header_size ()) {
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printf ("Image %s bad header SIZE\n", aufile[idx]);
ausize[idx] = 0;
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return -1;
}
if (!image_check_magic (hdr) || !image_check_arch (hdr, IH_ARCH_PPC)) {
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printf ("Image %s bad MAGIC or ARCH\n", aufile[idx]);
ausize[idx] = 0;
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return -1;
}
/* check the hdr CRC */
if (!image_check_hcrc (hdr)) {
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printf ("Image %s bad header checksum\n", aufile[idx]);
ausize[idx] = 0;
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return -1;
}
/* check the type - could do this all in one gigantic if() */
if ((idx == IDX_FIRMWARE) && !image_check_type (hdr, IH_TYPE_FIRMWARE)) {
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printf ("Image %s wrong type\n", aufile[idx]);
ausize[idx] = 0;
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return -1;
}
if ((idx == IDX_KERNEL) && !image_check_type (hdr, IH_TYPE_KERNEL)) {
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printf ("Image %s wrong type\n", aufile[idx]);
ausize[idx] = 0;
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return -1;
}
if ((idx == IDX_ROOTFS) &&
(!image_check_type (hdr, IH_TYPE_RAMDISK) &&
!image_check_type (hdr, IH_TYPE_FILESYSTEM))) {
printf ("Image %s wrong type\n", aufile[idx]);
ausize[idx] = 0;
return -1;
}
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/* recycle checksum */
checksum = image_get_data_size (hdr);
fsize = checksum + image_get_header_size ();
/* for kernel and ramdisk the image header must also fit into flash */
if (idx == IDX_KERNEL || image_check_type (hdr, IH_TYPE_RAMDISK))
checksum += image_get_header_size ();
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/* check the size does not exceed space in flash. HUSH scripts */
if ((ausize[idx] != 0) && (ausize[idx] < checksum)) {
printf ("Image %s is bigger than FLASH\n", aufile[idx]);
ausize[idx] = 0;
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return -1;
}
/* Update with the real filesize */
ausize[idx] = fsize;
return checksum; /* return size to be written to flash */
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}
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int au_do_update(int idx, long sz)
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{
image_header_t *hdr;
char *addr;
long start, end;
int off, rc;
uint nbytes;
hdr = (image_header_t *)LOAD_ADDR;
#if defined(CONFIG_FIT)
if (genimg_get_format ((void *)hdr) != IMAGE_FORMAT_LEGACY) {
puts ("Non legacy image format not supported\n");
return -1;
}
#endif
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/* execute a script */
if (image_check_type (hdr, IH_TYPE_SCRIPT)) {
addr = (char *)((char *)hdr + image_get_header_size ());
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/* stick a NULL at the end of the script, otherwise */
/* parse_string_outer() runs off the end. */
addr[image_get_data_size (hdr)] = 0;
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addr += 8;
parse_string_outer(addr, FLAG_PARSE_SEMICOLON);
return 0;
}
start = aufl_layout[idx].start;
end = aufl_layout[idx].end;
/* unprotect the address range */
/* this assumes that ONLY the firmware is protected! */
if (idx == IDX_FIRMWARE) {
#undef AU_UPDATE_TEST
#ifdef AU_UPDATE_TEST
/* erase it where Linux goes */
start = aufl_layout[1].start;
end = aufl_layout[1].end;
#endif
flash_sect_protect(0, start, end);
}
/*
* erase the address range.
*/
debug ("flash_sect_erase(%lx, %lx);\n", start, end);
flash_sect_erase(start, end);
wait_ms(100);
#ifdef CONFIG_PROGRESSBAR
show_progress(end - start, totsize);
#endif
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/* strip the header - except for the kernel and ramdisk */
if (image_check_type (hdr, IH_TYPE_KERNEL) ||
image_check_type (hdr, IH_TYPE_RAMDISK)) {
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addr = (char *)hdr;
off = image_get_header_size ();
nbytes = image_get_image_size (hdr);
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} else {
addr = (char *)((char *)hdr + image_get_header_size ());
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#ifdef AU_UPDATE_TEST
/* copy it to where Linux goes */
if (idx == IDX_FIRMWARE)
start = aufl_layout[1].start;
#endif
off = 0;
nbytes = image_get_data_size (hdr);
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}
/* copy the data from RAM to FLASH */
debug ("flash_write(%p, %lx %x)\n", addr, start, nbytes);
rc = flash_write(addr, start, nbytes);
if (rc != 0) {
printf("Flashing failed due to error %d\n", rc);
return -1;
}
#ifdef CONFIG_PROGRESSBAR
show_progress(nbytes, totsize);
#endif
/* check the data CRC of the copy */
if (crc32 (0, (uchar *)(start + off), image_get_data_size (hdr)) !=
image_get_dcrc (hdr)) {
printf ("Image %s Bad Data Checksum after COPY\n", aufile[idx]);
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return -1;
}
/* protect the address range */
/* this assumes that ONLY the firmware is protected! */
if (idx == IDX_FIRMWARE)
flash_sect_protect(1, start, end);
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.
*/
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int do_auto_update(void)
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{
block_dev_desc_t *stor_dev;
long sz;
int i, res = 0, cnt, old_ctrlc;
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char *env;
long start, end;
#if 0 /* disable key-press detection to speed up boot-up time */
uchar keypad_status1[2] = {0,0}, keypad_status2[2] = {0,0};
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/*
* Read keypad status
*/
i2c_read(I2C_PSOC_KEYPAD_ADDR, 0, 0, keypad_status1, 2);
wait_ms(500);
i2c_read(I2C_PSOC_KEYPAD_ADDR, 0, 0, keypad_status2, 2);
/*
* Check keypad
*/
if ( !(keypad_status1[1] & KEYPAD_MASK_LO) ||
(keypad_status1[1] != keypad_status2[1])) {
return 0;
}
#endif
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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(0);
if (au_usb_stor_curr_dev == -1) {
debug ("No device found. Not initialized?\n");
res = -1;
goto xit;
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}
/* check whether it has a partition table */
stor_dev = get_dev("usb", 0);
if (stor_dev == NULL) {
debug ("uknown device type\n");
res = -1;
goto xit;
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}
if (fat_register_device(stor_dev, 1) != 0) {
debug ("Unable to use USB %d:%d for fatls\n",
au_usb_stor_curr_dev, 1);
res = -1;
goto xit;
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}
if (file_fat_detectfs() != 0) {
debug ("file_fat_detectfs failed\n");
}
/*
* now check whether start and end are defined using environment
* variables.
*/
start = -1;
end = 0;
env = getenv("firmware_st");
if (env != NULL)
start = simple_strtoul(env, NULL, 16);
env = getenv("firmware_nd");
if (env != NULL)
end = simple_strtoul(env, NULL, 16);
if (start >= 0 && end && end > start) {
ausize[IDX_FIRMWARE] = (end + 1) - start;
aufl_layout[IDX_FIRMWARE].start = start;
aufl_layout[IDX_FIRMWARE].end = end;
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}
start = -1;
end = 0;
env = getenv("kernel_st");
if (env != NULL)
start = simple_strtoul(env, NULL, 16);
env = getenv("kernel_nd");
if (env != NULL)
end = simple_strtoul(env, NULL, 16);
if (start >= 0 && end && end > start) {
ausize[IDX_KERNEL] = (end + 1) - start;
aufl_layout[IDX_KERNEL].start = start;
aufl_layout[IDX_KERNEL].end = end;
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}
start = -1;
end = 0;
env = getenv("rootfs_st");
if (env != NULL)
start = simple_strtoul(env, NULL, 16);
env = getenv("rootfs_nd");
if (env != NULL)
end = simple_strtoul(env, NULL, 16);
if (start >= 0 && end && end > start) {
ausize[IDX_ROOTFS] = (end + 1) - start;
aufl_layout[IDX_ROOTFS].start = start;
aufl_layout[IDX_ROOTFS].end = end;
}
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/* make certain that HUSH is runnable */
u_boot_hush_start();
/* make sure that we see CTRL-C and save the old state */
old_ctrlc = disable_ctrlc(0);
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/* validate the images first */
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for (i = 0; i < AU_MAXFILES; i++) {
ulong imsize;
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/* just read the header */
sz = file_fat_read(aufile[i], LOAD_ADDR, image_get_header_size ());
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debug ("read %s sz %ld hdr %d\n",
aufile[i], sz, image_get_header_size ());
if (sz <= 0 || sz < image_get_header_size ()) {
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debug ("%s not found\n", aufile[i]);
ausize[i] = 0;
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continue;
}
/* au_check_header_valid() updates ausize[] */
if ((imsize = au_check_header_valid(i, sz)) < 0) {
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debug ("%s header not valid\n", aufile[i]);
continue;
}
/* totsize accounts for image size and flash erase size */
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totsize += (imsize + (aufl_layout[i].end - aufl_layout[i].start));
}
#ifdef CONFIG_PROGRESSBAR
if (totsize) {
lcd_puts(" Update in progress\n");
lcd_enable();
}
#endif
/* just loop thru all the possible files */
for (i = 0; i < AU_MAXFILES && totsize; i++) {
if (!ausize[i]) {
continue;
}
sz = file_fat_read(aufile[i], LOAD_ADDR, ausize[i]);
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debug ("read %s sz %ld hdr %d\n",
aufile[i], sz, image_get_header_size ());
if (sz != ausize[i]) {
printf ("%s: size %ld read %ld?\n", aufile[i], ausize[i], sz);
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continue;
}
if (sz <= 0 || sz <= image_get_header_size ()) {
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debug ("%s not found\n", aufile[i]);
continue;
}
if (au_check_cksum_valid(i, sz) < 0) {
debug ("%s checksum not valid\n", aufile[i]);
continue;
}
/* this is really not a good idea, but it's what the */
/* customer wants. */
cnt = 0;
do {
res = au_do_update(i, sz);
/* let the user break out of the loop */
if (ctrlc() || had_ctrlc()) {
clear_ctrlc();
break;
}
cnt++;
#ifdef AU_TEST_ONLY
} while (res < 0 && cnt < (AU_MAXFILES + 1));
if (cnt < (AU_MAXFILES + 1))
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#else
} while (res < 0);
#endif
}
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/* restore the old state */
disable_ctrlc(old_ctrlc);
#ifdef CONFIG_PROGRESSBAR
if (totsize) {
if (!res) {
lcd_puts("\n Update completed\n");
} else {
lcd_puts("\n Update error\n");
}
lcd_enable();
}
#endif
xit:
usb_stop();
return res;
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}
#endif /* CONFIG_AUTO_UPDATE */