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/*
* (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 !defined(CONFIG_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_PREPARE "prepare.img"
#define AU_PREINST "preinst.img"
#define AU_FIRMWARE "firmw_01.img"
#define AU_KERNEL "kernl_01.img"
#define AU_APP "app.img"
#define AU_DISK "disk.img"
#define AU_POSTINST "postinst.img"
struct flash_layout
{
long start;
long end;
};
/* layout of the FLASH. ST = start address, ND = end address. */
#ifndef CONFIG_FLASH_8MB /* 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, 32 MB RAM */
#define AU_FL_FIRMWARE_ST 0x00000000
#define AU_FL_FIRMWARE_ND 0x0005FFFF
#define AU_FL_KERNEL_ST 0x00060000
#define AU_FL_KERNEL_ND 0x0013FFFF
#define AU_FL_APP_ST 0x00140000
#define AU_FL_APP_ND 0x0067FFFF
#define AU_FL_DISK_ST 0x00680000
#define AU_FL_DISK_ND 0x007DFFFF
#define AU_FL_VFD_ST 0x007E0000
#define AU_FL_VFD_ND 0x007FFFFF
#endif /* CONFIG_FLASH_8MB */
/* a structure with the offsets to values in the EEPROM */
struct eeprom_layout
{
int time;
int size;
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 */
/* index of each file in the following arrays */
#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
/* 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,} \
};
/* array of flash areas start and end addresses */
struct flash_layout aufl_layout[AU_MAXFILES - 3] = { \
{AU_FL_FIRMWARE_ST, AU_FL_FIRMWARE_ND,}, \
{AU_FL_KERNEL_ST, AU_FL_KERNEL_ND,}, \
{AU_FL_APP_ST, AU_FL_APP_ND,}, \
{AU_FL_DISK_ST, AU_FL_DISK_ND,}, \
};
/* convert the index into aufile[] to an index into aufl_layout[] */
#define FIDX_TO_LIDX(idx) ((idx) - 2)
/* where to load files into memory */
#define LOAD_ADDR ((unsigned char *)0x0C100000)
/* the app is the largest image */
#define MAX_LOADSZ ausize[IDX_APP]
/* 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 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 int i2c_write_multiple (uchar, uint, int, void *, int);
extern int i2c_read_multiple (uchar, uint, int, void *, int);
extern int u_boot_hush_start(void);
int
au_check_cksum_valid(int idx, long nbytes)
{
image_header_t *hdr;
unsigned long checksum;
hdr = (image_header_t *)LOAD_ADDR;
if (nbytes != (sizeof(*hdr) + ntohl(hdr->ih_size)))
{
printf ("Image %s bad total SIZE\n", aufile[idx]);
return -1;
}
/* check the data CRC */
checksum = ntohl(hdr->ih_dcrc);
if (crc32 (0, (uchar *)(LOAD_ADDR + sizeof(*hdr)), ntohl(hdr->ih_size))
!= checksum)
{
printf ("Image %s bad data checksum\n", aufile[idx]);
return -1;
}
return 0;
}
int
au_check_header_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 */
#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
if (nbytes < sizeof(*hdr))
{
printf ("Image %s bad header SIZE\n", aufile[idx]);
return -1;
}
if (ntohl(hdr->ih_magic) != IH_MAGIC || hdr->ih_arch != IH_CPU_ARM)
{
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;
}
if ((idx == IDX_DISK) && (hdr->ih_type != IH_TYPE_FILESYSTEM)) {
printf ("Image %s wrong type\n", aufile[idx]);
return -1;
}
if ((idx == IDX_APP) && (hdr->ih_type != IH_TYPE_RAMDISK)
&& (hdr->ih_type != IH_TYPE_FILESYSTEM)) {
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;
/* recycle checksum */
checksum = ntohl(hdr->ih_size);
/* for kernel and app the image header must also fit into flash */
if ((idx != IDX_DISK) && (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;
}
/* 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, long sz)
{
image_header_t *hdr;
char *addr;
long start, end;
int off, rc;
uint nbytes;
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));
/* 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[FIDX_TO_LIDX(idx)].start;
end = aufl_layout[FIDX_TO_LIDX(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 || hdr->ih_type == IH_TYPE_RAMDISK) {
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;
}
int
au_update_eeprom(int idx)
{
image_header_t *hdr;
int off;
uint32_t val;
/* special case for prepare.img */
if (idx == IDX_PREPARE) {
/* enable the power switch */
*CPLD_VFD_BK &= ~POWER_OFF;
return 0;
}
hdr = (image_header_t *)LOAD_ADDR;
/* write the time field into EEPROM */
off = auee_off[idx].time;
val = ntohl(hdr->ih_time);
i2c_write_multiple(0x54, off, 1, &val, sizeof(val));
/* write the size field into EEPROM */
off = auee_off[idx].size;
val = ntohl(hdr->ih_size);
i2c_write_multiple(0x54, off, 1, &val, sizeof(val));
/* write the dcrc field into EEPROM */
off = auee_off[idx].dcrc;
val = ntohl(hdr->ih_dcrc);
i2c_write_multiple(0x54, off, 1, &val, sizeof(val));
/* 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, cnt, old_ctrlc, got_ctrlc;
char *env;
long start, end;
#undef ERASE_EEPROM
#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(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_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;
/*
* 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;
}
start = -1;
end = 0;
env = getenv("app_st");
if (env != NULL)
start = simple_strtoul(env, NULL, 16);
env = getenv("app_nd");
if (env != NULL)
end = simple_strtoul(env, NULL, 16);
if (start >= 0 && end && end > start) {
ausize[IDX_APP] = (end + 1) - start;
aufl_layout[2].start = start;
aufl_layout[2].end = end;
}
start = -1;
end = 0;
env = getenv("disk_st");
if (env != NULL)
start = simple_strtoul(env, NULL, 16);
env = getenv("disk_nd");
if (env != NULL)
end = simple_strtoul(env, NULL, 16);
if (start >= 0 && end && end > start) {
ausize[IDX_DISK] = (end + 1) - start;
aufl_layout[3].start = start;
aufl_layout[3].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;
}
#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, (unsigned char *)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. */
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
/*
* it doesn't make sense to update the EEPROM if the
* update was interrupted by the user due to errors.
*/
if (got_ctrlc == 0)
au_update_eeprom(i);
else
/* enable the power switch */
*CPLD_VFD_BK &= ~POWER_OFF;
}
usb_stop();
/* restore the old state */
disable_ctrlc(old_ctrlc);
return 0;
}
#endif /* CONFIG_AUTO_UPDATE */