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nyx: Add emuMMC partition backup

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For now it will automatically dump the first found and the size will be based on its GPT.
This commit is contained in:
CTCaer 2020-04-30 15:11:18 +03:00
parent 448cc49cff
commit 5f6bf332d3
1 changed files with 73 additions and 35 deletions
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106
nyx/nyx_gui/frontend/fe_emmc_tools.c
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@ -47,7 +47,7 @@ extern nyx_config n_cfg;
extern void emmcsn_path_impl(char *path, char *sub_dir, char *filename, sdmmc_storage_t *storage);
static void get_valid_partition(u32 *sector_start, u32 *sector_size, u32 *part_idx, bool backup)
static void _get_valid_partition(u32 *sector_start, u32 *sector_size, u32 *part_idx, bool backup)
{
sd_mount();
mbr_t *mbr = (mbr_t *)calloc(sizeof(mbr_t), 1);
@ -62,8 +62,29 @@ static void get_valid_partition(u32 *sector_start, u32 *sector_size, u32 *part_i
*sector_start = mbr->partitions[i].start_sct;
u8 type = mbr->partitions[i].type;
if ((curr_part_size >= *sector_size) && *sector_start && type != 0x83 && (!backup || type == 0xE0))
{
if (backup)
{
u8 gpt_check[512] = { 0 };
sdmmc_storage_read(&sd_storage, *sector_start + 0xC001, 1, gpt_check);
if (!memcmp(gpt_check, "EFI PART", 8))
{
*sector_size = curr_part_size;
*sector_start = *sector_start + 0x8000;
break;
}
sdmmc_storage_read(&sd_storage, *sector_start + 0x4001, 1, gpt_check);
if (!memcmp(gpt_check, "EFI PART", 8))
{
*sector_size = curr_part_size;
break;
}
}
else
break;
}
}
if (i < 4)
*part_idx = i;
else
@ -71,34 +92,24 @@ static void get_valid_partition(u32 *sector_start, u32 *sector_size, u32 *part_i
*sector_start = 0;
*sector_size = 0;
*part_idx = 0;
goto out;
}
if (!backup)
*sector_start = *sector_start + 0x8000;
else
{
*sector_size = curr_part_size;
sdmmc_storage_read(&sd_storage, *sector_start + 0xC001, 1, mbr);
if (!memcmp(mbr, "EFI PART", 8))
{
*sector_start = *sector_start + 0x8000;
goto out;
}
sdmmc_storage_read(&sd_storage, *sector_start + 0x4001, 1, mbr);
if (!memcmp(mbr, "EFI PART", 8))
goto out;
sdmmc_storage_read(&sd_storage, *sector_start + 0x4003, 1, mbr);
if (!memcmp(mbr, "EFI PART", 8))
{
*sector_start = *sector_start + 2;
goto out;
}
}
out:
free(mbr);
if (backup && *part_idx && *sector_size)
{
gpt_t *gpt = (gpt_t *)calloc(sizeof(gpt_t), 1);
sdmmc_storage_read(&sd_storage, *sector_start + 0x4001, 1, gpt);
u32 new_size = gpt->header.alt_lba + 1;
if (*sector_size > new_size)
*sector_size = new_size;
else
*sector_size = 0;
free(gpt);
}
else if (!backup && *part_idx)
*sector_start = *sector_start + 0x8000;
}
static lv_obj_t *create_mbox_text(char *text, bool button_ok)
@ -333,7 +344,7 @@ static int _dump_emmc_verify(emmc_tool_gui_t *gui, sdmmc_storage_t *storage, u32
bool partial_sd_full_unmount = false;
static int _dump_emmc_part(emmc_tool_gui_t *gui, char *sd_path, sdmmc_storage_t *storage, emmc_part_t *part)
static int _dump_emmc_part(emmc_tool_gui_t *gui, char *sd_path, int active_part, sdmmc_storage_t *storage, emmc_part_t *part)
{
const u32 FAT32_FILESIZE_LIMIT = 0xFFFFFFFF;
const u32 SECTORS_TO_MIB_COEFF = 11;
@ -351,10 +362,30 @@ static int _dump_emmc_part(emmc_tool_gui_t *gui, char *sd_path, sdmmc_storage_t
char *outFilename = sd_path;
u32 sdPathLen = strlen(sd_path);
u32 sector_start = 0, part_idx = 0;
u32 sector_size = totalSectors;
u32 sd_sector_off = 0;
FIL partialIdxFp;
char partialIdxFilename[12];
strcpy(partialIdxFilename, "partial.idx");
if (gui->raw_emummc)
{
_get_valid_partition(&sector_start, &sector_size, &part_idx, true);
if (!part_idx || !sector_size)
{
s_printf(gui->txt_buf, "#FFDD00 Failed to find a partition...#\n");
lv_label_ins_text(gui->label_log, LV_LABEL_POS_LAST, gui->txt_buf);
manual_system_maintenance(true);
return 0;
}
sd_sector_off = sector_start + (0x2000 * active_part);
if (active_part == 2)
totalSectors = sector_size;
}
s_printf(gui->txt_buf, "#96FF00 SD Card free space:# %d MiB\n#96FF00 Total backup size:# %d MiB\n\n",
sd_fs.free_clst * sd_fs.csize >> SECTORS_TO_MIB_COEFF,
totalSectors >> SECTORS_TO_MIB_COEFF);
@ -505,7 +536,7 @@ static int _dump_emmc_part(emmc_tool_gui_t *gui, char *sd_path, sdmmc_storage_t
memset(&fp, 0, sizeof(fp));
currPartIdx++;
if (n_cfg.verification)
if (n_cfg.verification && !gui->raw_emummc)
{
// Verify part.
if (_dump_emmc_verify(gui, storage, lbaStartPart, outFilename, part))
@ -583,7 +614,14 @@ static int _dump_emmc_part(emmc_tool_gui_t *gui, char *sd_path, sdmmc_storage_t
retryCount = 0;
num = MIN(totalSectors, NUM_SECTORS_PER_ITER);
while (!sdmmc_storage_read(storage, lba_curr, num, buf))
int res_read;
if (!gui->raw_emummc)
res_read = !sdmmc_storage_read(storage, lba_curr, num, buf);
else
res_read = !sdmmc_storage_read(&sd_storage, lba_curr + sd_sector_off, num, buf);
while (res_read)
{
s_printf(gui->txt_buf,
"\n#FFDD00 Error reading %d blocks @ LBA %08X,#\n"
@ -677,7 +715,7 @@ static int _dump_emmc_part(emmc_tool_gui_t *gui, char *sd_path, sdmmc_storage_t
f_close(&fp);
free(clmt);
if (n_cfg.verification)
if (n_cfg.verification && !gui->raw_emummc)
{
// Verify last part or single file backup.
if (_dump_emmc_verify(gui, storage, lbaStartPart, outFilename, part))
@ -773,7 +811,7 @@ void dump_emmc_selected(emmcPartType_t dumpType, emmc_tool_gui_t *gui)
sdmmc_storage_set_mmc_partition(&storage, i + 1);
emmcsn_path_impl(sdPath, "", bootPart.name, &storage);
res = _dump_emmc_part(gui, sdPath, &storage, &bootPart);
res = _dump_emmc_part(gui, sdPath, i, &storage, &bootPart);
if (!res)
s_printf(txt_buf, "#FFDD00 Failed!#\n");
@ -813,7 +851,7 @@ void dump_emmc_selected(emmcPartType_t dumpType, emmc_tool_gui_t *gui)
i++;
emmcsn_path_impl(sdPath, "/partitions", part->name, &storage);
res = _dump_emmc_part(gui, sdPath, &storage, part);
res = _dump_emmc_part(gui, sdPath, 0, &storage, part);
// If a part failed, don't continue.
if (!res)
{
@ -851,7 +889,7 @@ void dump_emmc_selected(emmcPartType_t dumpType, emmc_tool_gui_t *gui)
i++;
emmcsn_path_impl(sdPath, "", rawPart.name, &storage);
res = _dump_emmc_part(gui, sdPath, &storage, &rawPart);
res = _dump_emmc_part(gui, sdPath, 2, &storage, &rawPart);
if (!res)
s_printf(txt_buf, "#FFDD00 Failed!#\n");
@ -867,7 +905,7 @@ void dump_emmc_selected(emmcPartType_t dumpType, emmc_tool_gui_t *gui)
timer = get_tmr_s() - timer;
sdmmc_storage_end(&storage);
if (res && n_cfg.verification)
if (res && n_cfg.verification && !gui->raw_emummc)
s_printf(txt_buf, "Time taken: %dm %ds.\n#96FF00 Finished and verified!#", timer / 60, timer % 60);
else if (res)
s_printf(txt_buf, "Time taken: %dm %ds.\nFinished!", timer / 60, timer % 60);