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>
#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) if prepare.img ist found load it into memory. If it is
* valid then run it.
* 2) if preinst.img is found load it into memory. If it is
* valid then run it. Update the EEPROM.
* 3) if firmw_01.img is found load it into memory. If it is valid,
* burn it into FLASH and update the EEPROM.
* 4) if kernl_01.img is found load it into memory. If it is valid,
* burn it into FLASH and update the EEPROM.
* 5) if app.img is found load it into memory. If it is valid,
* burn it into FLASH and update the EEPROM.
* 6) if disk.img is found load it into memory. If it is valid,
* burn it into FLASH and update the EEPROM.
* 7) if postinst.img is found load it into memory. If it is
* valid then run it. Update the EEPROM.
*/
#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"
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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
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
/* max. number of files which could interest us */
#define AU_MAXFILES 2
/* pointers to file names */
char *aufile[AU_MAXFILES];
/* sizes of flash areas for each file */
long ausize[AU_MAXFILES];
/* 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,}, \
};
/* where to load files into memory */
#define LOAD_ADDR ((unsigned char *)0x00200000)
/* the app is the largest image */
#define MAX_LOADSZ ausize[IDX_KERNEL]
/*i2c address of the keypad status*/
#define I2C_PSOC_KEYPAD_ADDR 0x53
/* keypad mask */
#define KEYPAD_ROW 3
#define KEYPAD_COL 3
#define KEYPAD_MASK_LO ((1<<(KEYPAD_COL-1+(KEYPAD_ROW*4-4)))&0xFF)
#define KEYPAD_MASK_HI ((1<<(KEYPAD_COL-1+(KEYPAD_ROW*4-4)))>>8)
/* 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);
/* change char* to void* to shutup the compiler */
extern block_dev_desc_t *get_dev (char*, int);
extern int u_boot_hush_start(void);
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int au_check_cksum_valid(int idx, long nbytes)
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{
image_header_t *hdr;
unsigned long checksum;
hdr = (image_header_t *)LOAD_ADDR;
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if (nbytes != (sizeof(*hdr) + ntohl(hdr->ih_size))) {
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printf ("Image %s bad total SIZE\n", aufile[idx]);
return -1;
}
/* check the data CRC */
checksum = ntohl(hdr->ih_dcrc);
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if (crc32 (0, (uchar *)(LOAD_ADDR + sizeof(*hdr)), ntohl(hdr->ih_size)) != checksum) {
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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;
unsigned char buf[4];
hdr = (image_header_t *)LOAD_ADDR;
/* check the easy ones first */
#undef CHECK_VALID_DEBUG
#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
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if (nbytes < sizeof(*hdr)) {
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printf ("Image %s bad header SIZE\n", aufile[idx]);
return -1;
}
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if (ntohl(hdr->ih_magic) != IH_MAGIC || hdr->ih_arch != IH_CPU_PPC) {
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printf ("Image %s bad MAGIC or ARCH\n", aufile[idx]);
return -1;
}
/* check the hdr CRC */
checksum = ntohl(hdr->ih_hcrc);
hdr->ih_hcrc = 0;
if (crc32 (0, (uchar *)hdr, sizeof(*hdr)) != checksum) {
printf ("Image %s bad header checksum\n", aufile[idx]);
return -1;
}
hdr->ih_hcrc = htonl(checksum);
/* 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;
}
/* recycle checksum */
checksum = ntohl(hdr->ih_size);
/* for kernel and app the image header must also fit into flash */
if (idx != IDX_FIRMWARE)
checksum += sizeof(*hdr);
/* check the size does not exceed space in flash. HUSH scripts */
/* all have ausize[] set to 0 */
if ((ausize[idx] != 0) && (ausize[idx] < checksum)) {
printf ("Image %s is bigger than FLASH\n", aufile[idx]);
return -1;
}
return 0;
}
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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;
/* execute a script */
if (hdr->ih_type == IH_TYPE_SCRIPT) {
addr = (char *)((char *)hdr + sizeof(*hdr));
/* stick a NULL at the end of the script, otherwise */
/* parse_string_outer() runs off the end. */
addr[ntohl(hdr->ih_size)] = 0;
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);
/* strip the header - except for the kernel and ramdisk */
if (hdr->ih_type == IH_TYPE_KERNEL) {
addr = (char *)hdr;
off = sizeof(*hdr);
nbytes = sizeof(*hdr) + ntohl(hdr->ih_size);
} else {
addr = (char *)((char *)hdr + sizeof(*hdr));
#ifdef AU_UPDATE_TEST
/* copy it to where Linux goes */
if (idx == IDX_FIRMWARE)
start = aufl_layout[1].start;
#endif
off = 0;
nbytes = ntohl(hdr->ih_size);
}
/* 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;
}
/* check the dcrc of the copy */
if (crc32 (0, (uchar *)(start + off), ntohl(hdr->ih_size)) != ntohl(hdr->ih_dcrc)) {
printf ("Image %s Bad Data Checksum After COPY\n", aufile[idx]);
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, bitmap_first, cnt, old_ctrlc, got_ctrlc;
char *env;
long start, end;
char keypad_status1[2] = {0,0}, keypad_status2[2] = {0,0};
/*
* 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[0] & KEYPAD_MASK_HI) ||
(keypad_status1[0] != keypad_status2[0])) {
return 0;
}
if ( !(keypad_status1[1] & KEYPAD_MASK_LO) ||
(keypad_status1[1] != keypad_status2[1])) {
return 0;
}
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");
return -1;
}
/* check whether it has a partition table */
stor_dev = get_dev("usb", 0);
if (stor_dev == NULL) {
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_FIRMWARE] = AU_FIRMWARE;
aufile[IDX_KERNEL] = AU_KERNEL;
/* 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;
/*
* 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[0].start = start;
aufl_layout[0].end = end;
}
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[1].start = start;
aufl_layout[1].end = end;
}
/* 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);
bitmap_first = 0;
/* just loop thru all the possible files */
for (i = 0; i < AU_MAXFILES; i++) {
/* just read the header */
sz = file_fat_read(aufile[i], LOAD_ADDR, sizeof(image_header_t));
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_header_valid(i, sz) < 0) {
debug ("%s header not valid\n", aufile[i]);
continue;
}
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_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;
got_ctrlc = 0;
do {
res = au_do_update(i, sz);
/* let the user break out of the loop */
if (ctrlc() || had_ctrlc()) {
clear_ctrlc();
if (res < 0)
got_ctrlc = 1;
break;
}
cnt++;
#ifdef AU_TEST_ONLY
} while (res < 0 && cnt < 3);
if (cnt < 3)
#else
} while (res < 0);
#endif
}
usb_stop();
/* restore the old state */
disable_ctrlc(old_ctrlc);
return 0;
}
#endif /* CONFIG_AUTO_UPDATE */