66a6472382
Up till now it was impossible to use code from update.c when system was not equipped with raw FLASH memory. Such behavior prevented DFU from reusing this code. Signed-off-by: Lukasz Majewski <l.majewski@majess.pl> Acked-by: Joe Hershberger <joe.hershberger@ni.com> Reviewed-by: Simon Glass <sjg@chromium.org>
308 lines
7.2 KiB
C
308 lines
7.2 KiB
C
/*
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* (C) Copyright 2008 Semihalf
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*
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* Written by: Rafal Czubak <rcz@semihalf.com>
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* Bartlomiej Sieka <tur@semihalf.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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#if !(defined(CONFIG_FIT) && defined(CONFIG_OF_LIBFDT))
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#error "CONFIG_FIT and CONFIG_OF_LIBFDT are required for auto-update feature"
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#endif
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#include <command.h>
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#include <flash.h>
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#include <net.h>
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#include <net/tftp.h>
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#include <malloc.h>
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/* env variable holding the location of the update file */
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#define UPDATE_FILE_ENV "updatefile"
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/* set configuration defaults if needed */
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#ifndef CONFIG_UPDATE_LOAD_ADDR
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#define CONFIG_UPDATE_LOAD_ADDR 0x100000
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#endif
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#ifndef CONFIG_UPDATE_TFTP_MSEC_MAX
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#define CONFIG_UPDATE_TFTP_MSEC_MAX 100
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#endif
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#ifndef CONFIG_UPDATE_TFTP_CNT_MAX
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#define CONFIG_UPDATE_TFTP_CNT_MAX 0
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#endif
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extern ulong tftp_timeout_ms;
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extern int tftp_timeout_count_max;
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extern ulong load_addr;
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#ifndef CONFIG_SYS_NO_FLASH
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extern flash_info_t flash_info[];
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static uchar *saved_prot_info;
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#endif
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static int update_load(char *filename, ulong msec_max, int cnt_max, ulong addr)
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{
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int size, rv;
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ulong saved_timeout_msecs;
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int saved_timeout_count;
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char *saved_netretry, *saved_bootfile;
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rv = 0;
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/* save used globals and env variable */
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saved_timeout_msecs = tftp_timeout_ms;
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saved_timeout_count = tftp_timeout_count_max;
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saved_netretry = strdup(getenv("netretry"));
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saved_bootfile = strdup(net_boot_file_name);
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/* set timeouts for auto-update */
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tftp_timeout_ms = msec_max;
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tftp_timeout_count_max = cnt_max;
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/* we don't want to retry the connection if errors occur */
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setenv("netretry", "no");
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/* download the update file */
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load_addr = addr;
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copy_filename(net_boot_file_name, filename, sizeof(net_boot_file_name));
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size = net_loop(TFTPGET);
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if (size < 0)
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rv = 1;
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else if (size > 0)
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flush_cache(addr, size);
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/* restore changed globals and env variable */
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tftp_timeout_ms = saved_timeout_msecs;
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tftp_timeout_count_max = saved_timeout_count;
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setenv("netretry", saved_netretry);
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if (saved_netretry != NULL)
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free(saved_netretry);
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if (saved_bootfile != NULL) {
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copy_filename(net_boot_file_name, saved_bootfile,
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sizeof(net_boot_file_name));
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free(saved_bootfile);
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}
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return rv;
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}
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#ifndef CONFIG_SYS_NO_FLASH
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static int update_flash_protect(int prot, ulong addr_first, ulong addr_last)
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{
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uchar *sp_info_ptr;
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ulong s;
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int i, bank, cnt;
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flash_info_t *info;
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sp_info_ptr = NULL;
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if (prot == 0) {
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saved_prot_info =
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calloc(CONFIG_SYS_MAX_FLASH_BANKS * CONFIG_SYS_MAX_FLASH_SECT, 1);
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if (!saved_prot_info)
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return 1;
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}
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for (bank = 0; bank < CONFIG_SYS_MAX_FLASH_BANKS; ++bank) {
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cnt = 0;
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info = &flash_info[bank];
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/* Nothing to do if the bank doesn't exist */
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if (info->sector_count == 0)
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return 0;
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/* Point to current bank protection information */
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sp_info_ptr = saved_prot_info + (bank * CONFIG_SYS_MAX_FLASH_SECT);
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/*
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* Adjust addr_first or addr_last if we are on bank boundary.
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* Address space between banks must be continuous for other
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* flash functions (like flash_sect_erase or flash_write) to
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* succeed. Banks must also be numbered in correct order,
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* according to increasing addresses.
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*/
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if (addr_last > info->start[0] + info->size - 1)
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addr_last = info->start[0] + info->size - 1;
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if (addr_first < info->start[0])
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addr_first = info->start[0];
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for (i = 0; i < info->sector_count; i++) {
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/* Save current information about protected sectors */
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if (prot == 0) {
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s = info->start[i];
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if ((s >= addr_first) && (s <= addr_last))
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sp_info_ptr[i] = info->protect[i];
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}
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/* Protect/unprotect sectors */
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if (sp_info_ptr[i] == 1) {
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#if defined(CONFIG_SYS_FLASH_PROTECTION)
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if (flash_real_protect(info, i, prot))
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return 1;
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#else
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info->protect[i] = prot;
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#endif
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cnt++;
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}
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}
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if (cnt) {
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printf("%sProtected %d sectors\n",
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prot ? "": "Un-", cnt);
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}
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}
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if((prot == 1) && saved_prot_info)
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free(saved_prot_info);
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return 0;
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}
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#endif
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static int update_flash(ulong addr_source, ulong addr_first, ulong size)
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{
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#ifndef CONFIG_SYS_NO_FLASH
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ulong addr_last = addr_first + size - 1;
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/* round last address to the sector boundary */
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if (flash_sect_roundb(&addr_last) > 0)
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return 1;
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if (addr_first >= addr_last) {
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printf("Error: end address exceeds addressing space\n");
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return 1;
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}
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/* remove protection on processed sectors */
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if (update_flash_protect(0, addr_first, addr_last) > 0) {
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printf("Error: could not unprotect flash sectors\n");
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return 1;
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}
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printf("Erasing 0x%08lx - 0x%08lx", addr_first, addr_last);
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if (flash_sect_erase(addr_first, addr_last) > 0) {
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printf("Error: could not erase flash\n");
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return 1;
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}
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printf("Copying to flash...");
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if (flash_write((char *)addr_source, addr_first, size) > 0) {
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printf("Error: could not copy to flash\n");
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return 1;
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}
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printf("done\n");
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/* enable protection on processed sectors */
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if (update_flash_protect(1, addr_first, addr_last) > 0) {
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printf("Error: could not protect flash sectors\n");
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return 1;
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}
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#endif
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return 0;
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}
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static int update_fit_getparams(const void *fit, int noffset, ulong *addr,
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ulong *fladdr, ulong *size)
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{
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const void *data;
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if (fit_image_get_data(fit, noffset, &data, (size_t *)size))
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return 1;
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if (fit_image_get_load(fit, noffset, (ulong *)fladdr))
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return 1;
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*addr = (ulong)data;
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return 0;
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}
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int update_tftp(ulong addr)
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{
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char *filename, *env_addr;
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int images_noffset, ndepth, noffset;
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ulong update_addr, update_fladdr, update_size;
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void *fit;
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int ret = 0;
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/* use already present image */
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if (addr)
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goto got_update_file;
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printf("Auto-update from TFTP: ");
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/* get the file name of the update file */
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filename = getenv(UPDATE_FILE_ENV);
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if (filename == NULL) {
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printf("failed, env. variable '%s' not found\n",
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UPDATE_FILE_ENV);
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return 1;
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}
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printf("trying update file '%s'\n", filename);
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/* get load address of downloaded update file */
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if ((env_addr = getenv("loadaddr")) != NULL)
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addr = simple_strtoul(env_addr, NULL, 16);
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else
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addr = CONFIG_UPDATE_LOAD_ADDR;
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if (update_load(filename, CONFIG_UPDATE_TFTP_MSEC_MAX,
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CONFIG_UPDATE_TFTP_CNT_MAX, addr)) {
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printf("Can't load update file, aborting auto-update\n");
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return 1;
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}
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got_update_file:
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fit = (void *)addr;
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if (!fit_check_format((void *)fit)) {
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printf("Bad FIT format of the update file, aborting "
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"auto-update\n");
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return 1;
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}
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/* process updates */
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images_noffset = fdt_path_offset(fit, FIT_IMAGES_PATH);
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ndepth = 0;
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noffset = fdt_next_node(fit, images_noffset, &ndepth);
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while (noffset >= 0 && ndepth > 0) {
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if (ndepth != 1)
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goto next_node;
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printf("Processing update '%s' :",
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fit_get_name(fit, noffset, NULL));
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if (!fit_image_verify(fit, noffset)) {
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printf("Error: invalid update hash, aborting\n");
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ret = 1;
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goto next_node;
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}
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printf("\n");
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if (update_fit_getparams(fit, noffset, &update_addr,
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&update_fladdr, &update_size)) {
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printf("Error: can't get update parameteres, "
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"aborting\n");
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ret = 1;
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goto next_node;
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}
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if (update_flash(update_addr, update_fladdr, update_size)) {
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printf("Error: can't flash update, aborting\n");
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ret = 1;
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goto next_node;
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}
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next_node:
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noffset = fdt_next_node(fit, noffset, &ndepth);
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}
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return ret;
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}
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