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![Suriyan Ramasami](/assets/img/avatar_default.png)
Change the internal FAT functions to use loff_t for offsets. Signed-off-by: Suriyan Ramasami <suriyan.r@gmail.com> Acked-by: Simon Glass <sjg@chromium.org> [trini: Fix fs/fat/fat.c for min3 updates] Signed-off-by: Tom Rini <trini@ti.com>
479 lines
10 KiB
C
479 lines
10 KiB
C
/*
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* (C) Copyright 2003-2004
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* Gary Jennejohn, DENX Software Engineering, garyj@denx.de.
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* Stefan Roese, esd gmbh germany, stefan.roese@esd-electronics.com
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <common.h>
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#include <command.h>
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#include <image.h>
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#include <asm/byteorder.h>
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#include <fat.h>
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#include <flash.h>
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#include <part.h>
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#include "auto_update.h"
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#ifdef CONFIG_AUTO_UPDATE
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#if !defined(CONFIG_CMD_FAT)
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#error "must define CONFIG_CMD_FAT"
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#endif
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extern au_image_t au_image[];
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extern int N_AU_IMAGES;
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/* where to load files into memory */
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#define LOAD_ADDR ((unsigned char *)0x100000)
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#define MAX_LOADSZ 0x1c00000
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/* externals */
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long do_fat_read (const char *filename, void *buffer,
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unsigned long maxsize, int dols);
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extern block_dev_desc_t ide_dev_desc[CONFIG_SYS_IDE_MAXDEVICE];
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int au_check_cksum_valid(int i, long nbytes)
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{
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image_header_t *hdr;
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hdr = (image_header_t *)LOAD_ADDR;
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#if defined(CONFIG_FIT)
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if (genimg_get_format ((void *)hdr) != IMAGE_FORMAT_LEGACY) {
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puts ("Non legacy image format not supported\n");
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return -1;
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}
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#endif
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if ((au_image[i].type == AU_FIRMWARE) &&
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(au_image[i].size != image_get_data_size (hdr))) {
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printf ("Image %s has wrong size\n", au_image[i].name);
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return -1;
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}
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if (nbytes != (image_get_image_size (hdr))) {
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printf ("Image %s bad total SIZE\n", au_image[i].name);
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return -1;
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}
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/* check the data CRC */
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if (!image_check_dcrc (hdr)) {
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printf ("Image %s bad data checksum\n", au_image[i].name);
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return -1;
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}
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return 0;
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}
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int au_check_header_valid(int i, long nbytes)
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{
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image_header_t *hdr;
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hdr = (image_header_t *)LOAD_ADDR;
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#if defined(CONFIG_FIT)
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if (genimg_get_format ((void *)hdr) != IMAGE_FORMAT_LEGACY) {
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puts ("Non legacy image format not supported\n");
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return -1;
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}
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#endif
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/* check the easy ones first */
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if (nbytes < image_get_header_size ()) {
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printf ("Image %s bad header SIZE\n", au_image[i].name);
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return -1;
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}
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if (!image_check_magic (hdr) || !image_check_arch (hdr, IH_ARCH_PPC)) {
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printf ("Image %s bad MAGIC or ARCH\n", au_image[i].name);
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return -1;
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}
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if (!image_check_hcrc (hdr)) {
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printf ("Image %s bad header checksum\n", au_image[i].name);
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return -1;
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}
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/* check the type - could do this all in one gigantic if() */
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if (((au_image[i].type & AU_TYPEMASK) == AU_FIRMWARE) &&
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!image_check_type (hdr, IH_TYPE_FIRMWARE)) {
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printf ("Image %s wrong type\n", au_image[i].name);
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return -1;
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}
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if (((au_image[i].type & AU_TYPEMASK) == AU_SCRIPT) &&
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!image_check_type (hdr, IH_TYPE_SCRIPT)) {
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printf ("Image %s wrong type\n", au_image[i].name);
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return -1;
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}
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return 0;
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}
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int au_do_update(int i, long sz)
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{
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image_header_t *hdr;
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char *addr;
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long start, end;
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int off, rc;
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uint nbytes;
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int k;
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hdr = (image_header_t *)LOAD_ADDR;
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#if defined(CONFIG_FIT)
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if (genimg_get_format ((void *)hdr) != IMAGE_FORMAT_LEGACY) {
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puts ("Non legacy image format not supported\n");
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return -1;
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}
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#endif
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switch (au_image[i].type & AU_TYPEMASK) {
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case AU_SCRIPT:
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printf("Executing script %s\n", au_image[i].name);
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/* execute a script */
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if (image_check_type (hdr, IH_TYPE_SCRIPT)) {
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addr = (char *)((char *)hdr + image_get_header_size ());
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/* stick a NULL at the end of the script, otherwise */
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/* parse_string_outer() runs off the end. */
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addr[image_get_data_size (hdr)] = 0;
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addr += 8;
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/*
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* Replace cr/lf with ;
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*/
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k = 0;
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while (addr[k] != 0) {
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if ((addr[k] == 10) || (addr[k] == 13)) {
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addr[k] = ';';
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}
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k++;
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}
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run_command(addr, 0);
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return 0;
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}
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break;
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case AU_FIRMWARE:
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case AU_NOR:
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case AU_NAND:
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start = au_image[i].start;
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end = au_image[i].start + au_image[i].size - 1;
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/*
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* do not update firmware when image is already in flash.
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*/
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if (au_image[i].type == AU_FIRMWARE) {
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char *orig = (char*)start;
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char *new = (char *)((char *)hdr +
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image_get_header_size ());
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nbytes = image_get_data_size (hdr);
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while (--nbytes) {
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if (*orig++ != *new++) {
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break;
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}
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}
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if (!nbytes) {
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printf ("Skipping firmware update - "
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"images are identical\n");
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break;
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}
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}
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/* unprotect the address range */
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if (((au_image[i].type & AU_FLAGMASK) == AU_PROTECT) ||
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(au_image[i].type == AU_FIRMWARE)) {
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flash_sect_protect (0, start, end);
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}
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/*
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* erase the address range.
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*/
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if (au_image[i].type != AU_NAND) {
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printf ("Updating NOR FLASH with image %s\n",
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au_image[i].name);
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debug ("flash_sect_erase(%lx, %lx);\n", start, end);
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flash_sect_erase (start, end);
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}
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udelay(10000);
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/* strip the header - except for the kernel and ramdisk */
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if (au_image[i].type != AU_FIRMWARE) {
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addr = (char *)hdr;
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off = image_get_header_size ();
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nbytes = image_get_image_size (hdr);
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} else {
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addr = (char *)((char *)hdr + image_get_header_size ());
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off = 0;
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nbytes = image_get_data_size (hdr);
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}
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/*
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* copy the data from RAM to FLASH
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*/
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if (au_image[i].type != AU_NAND) {
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debug ("flash_write(%p, %lx, %x)\n",
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addr, start, nbytes);
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rc = flash_write ((char *)addr, start,
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(nbytes + 1) & ~1);
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} else {
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rc = -1;
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}
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if (rc != 0) {
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printf ("Flashing failed due to error %d\n", rc);
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return -1;
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}
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/*
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* check the dcrc of the copy
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*/
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if (au_image[i].type != AU_NAND) {
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rc = crc32 (0, (uchar *)(start + off),
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image_get_data_size (hdr));
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}
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if (rc != image_get_dcrc (hdr)) {
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printf ("Image %s Bad Data Checksum After COPY\n",
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au_image[i].name);
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return -1;
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}
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/* protect the address range */
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/* this assumes that ONLY the firmware is protected! */
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if (((au_image[i].type & AU_FLAGMASK) == AU_PROTECT) ||
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(au_image[i].type == AU_FIRMWARE)) {
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flash_sect_protect (1, start, end);
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}
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break;
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default:
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printf("Wrong image type selected!\n");
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}
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return 0;
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}
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static void process_macros (const char *input, char *output)
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{
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char c, prev;
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const char *varname_start = NULL;
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int inputcnt = strlen (input);
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int outputcnt = CONFIG_SYS_CBSIZE;
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int state = 0; /* 0 = waiting for '$' */
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/* 1 = waiting for '(' or '{' */
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/* 2 = waiting for ')' or '}' */
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/* 3 = waiting for ''' */
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#ifdef DEBUG_PARSER
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char *output_start = output;
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printf ("[PROCESS_MACROS] INPUT len %d: \"%s\"\n",
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strlen(input), input);
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#endif
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prev = '\0'; /* previous character */
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while (inputcnt && outputcnt) {
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c = *input++;
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inputcnt--;
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if (state != 3) {
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/* remove one level of escape characters */
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if ((c == '\\') && (prev != '\\')) {
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if (inputcnt-- == 0)
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break;
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prev = c;
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c = *input++;
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}
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}
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switch (state) {
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case 0: /* Waiting for (unescaped) $ */
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if ((c == '\'') && (prev != '\\')) {
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state = 3;
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break;
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}
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if ((c == '$') && (prev != '\\')) {
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state++;
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} else {
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*(output++) = c;
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outputcnt--;
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}
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break;
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case 1: /* Waiting for ( */
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if (c == '(' || c == '{') {
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state++;
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varname_start = input;
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} else {
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state = 0;
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*(output++) = '$';
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outputcnt--;
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if (outputcnt) {
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*(output++) = c;
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outputcnt--;
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}
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}
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break;
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case 2: /* Waiting for ) */
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if (c == ')' || c == '}') {
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int i;
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char envname[CONFIG_SYS_CBSIZE], *envval;
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/* Varname # of chars */
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int envcnt = input - varname_start - 1;
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/* Get the varname */
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for (i = 0; i < envcnt; i++) {
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envname[i] = varname_start[i];
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}
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envname[i] = 0;
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/* Get its value */
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envval = getenv (envname);
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/* Copy into the line if it exists */
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if (envval != NULL)
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while ((*envval) && outputcnt) {
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*(output++) = *(envval++);
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outputcnt--;
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}
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/* Look for another '$' */
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state = 0;
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}
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break;
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case 3: /* Waiting for ' */
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if ((c == '\'') && (prev != '\\')) {
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state = 0;
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} else {
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*(output++) = c;
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outputcnt--;
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}
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break;
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}
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prev = c;
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}
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if (outputcnt)
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*output = 0;
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#ifdef DEBUG_PARSER
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printf ("[PROCESS_MACROS] OUTPUT len %d: \"%s\"\n",
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strlen (output_start), output_start);
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#endif
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}
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/*
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* this is called from board_init() after the hardware has been set up
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* and is usable. That seems like a good time to do this.
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* Right now the return value is ignored.
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*/
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int do_auto_update(void)
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{
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block_dev_desc_t *stor_dev = NULL;
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long sz;
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int i, res, old_ctrlc;
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char buffer[32];
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char str[80];
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int n;
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if (ide_dev_desc[0].type != DEV_TYPE_UNKNOWN) {
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stor_dev = get_dev ("ide", 0);
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if (stor_dev == NULL) {
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debug ("ide: unknown device\n");
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return -1;
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}
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}
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if (fat_register_device (stor_dev, 1) != 0) {
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debug ("Unable to register ide disk 0:1\n");
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return -1;
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}
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/*
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* Check if magic file is present
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*/
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if ((n = do_fat_read (AU_MAGIC_FILE, buffer,
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sizeof(buffer), LS_NO)) <= 0) {
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debug ("No auto_update magic file (n=%d)\n", n);
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return -1;
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}
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#ifdef CONFIG_AUTO_UPDATE_SHOW
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board_auto_update_show (1);
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#endif
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puts("\nAutoUpdate Disk detected! Trying to update system...\n");
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/* make sure that we see CTRL-C and save the old state */
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old_ctrlc = disable_ctrlc (0);
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/* just loop thru all the possible files */
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for (i = 0; i < N_AU_IMAGES; i++) {
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/*
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* Try to expand the environment var in the fname
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*/
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process_macros (au_image[i].name, str);
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strcpy (au_image[i].name, str);
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printf("Reading %s ...", au_image[i].name);
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/* just read the header */
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sz = do_fat_read (au_image[i].name, LOAD_ADDR,
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image_get_header_size (), LS_NO);
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debug ("read %s sz %ld hdr %d\n",
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au_image[i].name, sz, image_get_header_size ());
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if (sz <= 0 || sz < image_get_header_size ()) {
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puts(" not found\n");
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continue;
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}
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if (au_check_header_valid (i, sz) < 0) {
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puts(" header not valid\n");
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continue;
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}
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sz = do_fat_read (au_image[i].name, LOAD_ADDR,
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MAX_LOADSZ, LS_NO);
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debug ("read %s sz %ld hdr %d\n",
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au_image[i].name, sz, image_get_header_size ());
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if (sz <= 0 || sz <= image_get_header_size ()) {
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puts(" not found\n");
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continue;
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}
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if (au_check_cksum_valid (i, sz) < 0) {
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puts(" checksum not valid\n");
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continue;
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}
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puts(" done\n");
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do {
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res = au_do_update (i, sz);
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/* let the user break out of the loop */
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if (ctrlc() || had_ctrlc ()) {
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clear_ctrlc ();
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break;
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}
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} while (res < 0);
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}
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/* restore the old state */
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disable_ctrlc (old_ctrlc);
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puts("AutoUpdate finished\n\n");
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#ifdef CONFIG_AUTO_UPDATE_SHOW
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board_auto_update_show (0);
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#endif
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return 0;
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}
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int auto_update(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
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{
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do_auto_update();
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return 0;
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}
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U_BOOT_CMD(
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autoupd, 1, 1, auto_update,
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"Automatically update images",
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""
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);
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#endif /* CONFIG_AUTO_UPDATE */
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