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[Versioning] Better and smarter for update and sept

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- Still compatible with old hekate.
- Allows for hotfix control
- Sept is now copied from actual running payload, negating the need to check update.bin
- If a foreign payload is found in sept then it is renamed and hekate copies itself. After sept run, it renames it back and continues with boot.
This commit is contained in:
Kostas Missos
2019-03-07 23:53:58 +02:00
parent ca68818efe
commit 2e9a89aa20
5 changed files with 92 additions and 96 deletions
Download Patch File Download Diff File Expand all files Collapse all files

63
bootloader/hos/sept.c
View File

@@ -35,6 +35,7 @@ extern gfx_con_t gfx_con;
#define EPRINTF(text) gfx_printf(&gfx_con, "%k"text"%k\n", 0xFFFF0000, 0xFFCCCCCC)
#define EPRINTFARGS(text, args...) gfx_printf(&gfx_con, "%k"text"%k\n", 0xFFFF0000, args, 0xFFCCCCCC)
#define RELOC_META_OFF 0x7C
#define PATCHED_RELOC_SZ 0x94
#define WB_RST_ADDR 0x40010ED0
@@ -55,7 +56,6 @@ u8 warmboot_reboot[] = {
#define SEPT_PRI_ADDR 0x4003F000
#define SEPT_PK1T_ADDR 0xC0400000
#define SEPT_PK1T_STACK 0x40008000
#define SEPT_TCSZ_ADDR (SEPT_PK1T_ADDR - 0x4)
#define SEPT_STG1_ADDR (SEPT_PK1T_ADDR + 0x2E100)
#define SEPT_STG2_ADDR (SEPT_PK1T_ADDR + 0x60E0)
@@ -63,13 +63,24 @@ u8 warmboot_reboot[] = {
extern boot_cfg_t b_cfg;
extern hekate_config h_cfg;
extern const volatile ipl_ver_meta_t ipl_ver;
extern void *sd_file_read(char *path);
extern void sd_mount();
extern void sd_unmount();
extern bool is_ipl_updated(void *buf);
extern void reloc_patcher(u32 payload_dst, u32 payload_src, u32 payload_size);
void check_sept()
{
// Check if non-hekate payload is used for sept and restore it.
if (h_cfg.sept_run && !f_stat("sept/payload.bak", NULL))
{
f_unlink("sept/payload.bin");
f_rename("sept/payload.bak", "sept/payload.bin");
return;
}
u8 *pkg1 = (u8 *)calloc(1, 0x40000);
sdmmc_storage_t storage;
@@ -133,25 +144,41 @@ int reboot_to_sept(const u8 *tsec_fw)
}
f_close(&fp);
// Save auto boot config to payload, if any.
boot_cfg_t *tmp_cfg = malloc(sizeof(boot_cfg_t));
memcpy(tmp_cfg, &b_cfg, sizeof(boot_cfg_t));
b_cfg.boot_cfg |= (BOOT_CFG_AUTOBOOT_EN | BOOT_CFG_SEPT_RUN);
tmp_cfg->boot_cfg |= (BOOT_CFG_AUTOBOOT_EN | BOOT_CFG_SEPT_RUN);
if (f_open(&fp, "sept/payload.bin", FA_READ | FA_WRITE))
goto error;
u32 magic;
f_lseek(&fp, f_size(&fp) - 6);
f_read(&fp, &magic, 4, NULL);
if (magic == 0x43544349)
bool update_sept_payload = true;
if (!f_open(&fp, "sept/payload.bin", FA_READ | FA_WRITE))
{
f_lseek(&fp, PATCHED_RELOC_SZ);
f_write(&fp, tmp_cfg, sizeof(boot_cfg_t), NULL);
ipl_ver_meta_t tmp_ver;
f_lseek(&fp, PATCHED_RELOC_SZ + sizeof(boot_cfg_t));
f_read(&fp, &tmp_ver, sizeof(ipl_ver_meta_t), NULL);
if (tmp_ver.magic == ipl_ver.magic)
{
if (tmp_ver.version == ipl_ver.version)
{
// Save auto boot config to sept payload, if any.
boot_cfg_t *tmp_cfg = malloc(sizeof(boot_cfg_t));
memcpy(tmp_cfg, &b_cfg, sizeof(boot_cfg_t));
f_lseek(&fp, PATCHED_RELOC_SZ);
f_write(&fp, tmp_cfg, sizeof(boot_cfg_t), NULL);
f_close(&fp);
update_sept_payload = false;
}
}
else
f_rename("sept/payload.bin", "sept/payload.bak"); // Backup foreign payload.
f_close(&fp);
}
if (update_sept_payload)
{
volatile reloc_meta_t *reloc = (reloc_meta_t *)(IPL_LOAD_ADDR + RELOC_META_OFF);
f_open(&fp, "sept/payload.bin", FA_WRITE | FA_CREATE_ALWAYS);
f_write(&fp, (u8 *)reloc->start, reloc->end - reloc->start, NULL);
f_close(&fp);
}
f_close(&fp);
sd_unmount();
@@ -172,8 +199,6 @@ int reboot_to_sept(const u8 *tsec_fw)
(*sept)();
return 1;
error:
EPRINTF("Failed to run sept\n");
display_backlight_brightness(h_cfg.backlight, 1000);