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util: Update update.bin if old

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This commit is contained in:
CTCaer 2019-12-12 00:07:18 +02:00
parent c6e92311f9
commit 87d376654b
1 changed files with 29 additions and 9 deletions
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34
bootloader/main.c
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@ -252,18 +252,38 @@ void reloc_patcher(u32 payload_dst, u32 payload_src, u32 payload_size)
}
}
bool is_ipl_updated(void *buf)
bool is_ipl_updated(void *buf, char *path, bool force)
{
ipl_ver_meta_t *update_ft = (ipl_ver_meta_t *)(buf + PATCHED_RELOC_SZ + sizeof(boot_cfg_t));
if (update_ft->magic == ipl_ver.magic)
{
if (byte_swap_32(update_ft->version) <= byte_swap_32(ipl_ver.version))
return true;
// Check if newer version.
if (!force && (update_ft->magic == ipl_ver.magic))
if (byte_swap_32(update_ft->version) > byte_swap_32(ipl_ver.version))
return false;
// Update if old or broken.
if ((force && (update_ft->magic != ipl_ver.magic)) ||
(byte_swap_32(update_ft->version) < byte_swap_32(ipl_ver.version)))
{
FIL fp;
volatile reloc_meta_t *reloc = (reloc_meta_t *)(IPL_LOAD_ADDR + RELOC_META_OFF);
boot_cfg_t *tmp_cfg = malloc(sizeof(boot_cfg_t));
memset(tmp_cfg, 0, sizeof(boot_cfg_t));
f_open(&fp, path, FA_WRITE | FA_CREATE_ALWAYS);
f_write(&fp, (u8 *)reloc->start, reloc->end - reloc->start, NULL);
// Write needed tag in case injected ipl uses old versioning.
f_write(&fp, "ICTC49", 6, NULL);
// Reset boot storage configuration.
f_lseek(&fp, PATCHED_RELOC_SZ);
f_write(&fp, tmp_cfg, sizeof(boot_cfg_t), NULL);
f_close(&fp);
free(tmp_cfg);
}
else
return true;
}
@ -301,7 +321,7 @@ int launch_payload(char *path, bool update)
f_close(&fp);
if (update && is_ipl_updated(buf))
if (update && is_ipl_updated(buf, path, false))
goto out;
sd_unmount();