/**
* alloc_read_gpt_entries(): reads partition entries from disk
* @dev_desc
* @gpt - GPT header
*
* Description: Returns ptes on success, NULL on error.
* Allocates space for PTEs based on information found in @gpt.
* Notes: remember to free pte when you're done!
*/
static gpt_entry *alloc_read_gpt_entries(block_dev_desc_t * dev_desc,
gpt_header * pgpt_head)
{
size_t count = 0, blk_cnt;
gpt_entry *pte = NULL;
if (!dev_desc || !pgpt_head) {
printf("%s: Invalid Argument(s)\n", __func__);
return NULL;
}
count = le32_to_cpu(pgpt_head->num_partition_entries) *
le32_to_cpu(pgpt_head->sizeof_partition_entry);
debug("%s: count = %u * %u = %zu\n", __func__,
(u32) le32_to_cpu(pgpt_head->num_partition_entries),
(u32) le32_to_cpu(pgpt_head->sizeof_partition_entry), count);
/* Allocate memory for PTE, remember to FREE */
if (count != 0) {
pte = memalign(ARCH_DMA_MINALIGN,
PAD_TO_BLOCKSIZE(count, dev_desc));
}
if (count == 0 || pte == NULL) {
printf("%s: ERROR: Can't allocate 0x%zX "
"bytes for GPT Entries\n",
__func__, count);
return NULL;
}
/* Read GPT Entries from device */
blk_cnt = BLOCK_CNT(count, dev_desc);
if (dev_desc->block_read (dev_desc->dev,
le64_to_cpu(pgpt_head->partition_entry_lba),
(lbaint_t) (blk_cnt), pte)
!= blk_cnt) {
printf("*** ERROR: Can't read GPT Entries ***\n");
free(pte);
return NULL;
}
return pte;
}
void fb_mmc_flash_write(const char *cmd, void *download_buffer,
unsigned int download_bytes, char *response)
{
int ret;
int expected;
int pte_blk_cnt;
block_dev_desc_t *dev_desc;
disk_partition_t info;
/* initialize the response buffer */
response_str = response;
legacy_mbr *mbr;
gpt_header *primary_gpt_h;
gpt_entry *second_gpt_e;
dev_desc = get_dev("mmc", CONFIG_FASTBOOT_FLASH_MMC_DEV);
if (!dev_desc || dev_desc->type == DEV_TYPE_UNKNOWN) {
error("invalid mmc device\n");
fastboot_fail("invalid mmc device");
return;
}
#if 0
char cmd_buf[64] = {0};
ulong mmc_part;
ulong mmc_flash_start;
if (!strncmp("to:", cmd, strlen("to:"))) {
strsep(&cmd, ":");
if (!cmd) {
error("missing variable\n");
fastboot_fail("missing var");
return;
}
mmc_part = simple_strtoul(cmd, NULL, 10);
if(mmc_part > 16){
error("Part # is too large\n");
fastboot_fail("Part # is too large");
return;
}
strsep(&cmd, ":");
if (!cmd) {
error("missing variable\n");
fastboot_fail("missing var");
return;
}
mmc_flash_start = simple_strtoul(cmd, NULL, 16);
if(mmc_flash_start != PAD_TO_BLOCKSIZE(mmc_flash_start, dev_desc)){
error("Offset must start from block size boudry\n");
fastboot_fail("Offset must start from block size boudry");
return;
}
sprintf(cmd_buf, "mmc dev %d %d", CONFIG_FASTBOOT_FLASH_MMC_DEV, mmc_part);
run_command(cmd_buf, 0);
if(dev_desc->lba != 0){
if (dev_desc->block_write(dev_desc->dev, mmc_flash_start/dev_desc->blksz, BLOCK_CNT(download_bytes, dev_desc), download_buffer) != BLOCK_CNT(download_bytes, dev_desc)){
error("flash data failed:\n");
fastboot_fail("flash data failed:");
}else{
fastboot_okay("");
}
}else{
error("Invalid mmc part\n");
fastboot_fail("Invalid mmc part");
}
/* switch back to main part */
sprintf(cmd_buf, "mmc dev %d 0", CONFIG_FASTBOOT_FLASH_MMC_DEV);
run_command(cmd_buf, 0);
}else
#endif
if (!strncmp("partition", cmd, strlen("partition"))) {
/*do sanity check of the downloader data */
expected = sizeof(legacy_mbr) + 2 * ((PAD_TO_BLOCKSIZE(sizeof(gpt_header), dev_desc) + PAD_TO_BLOCKSIZE(GPT_ENTRY_NUMBERS
* sizeof(gpt_entry), dev_desc)));
if(expected != download_bytes){
error("wrong size for download data, expected: %d\n", expected);
fastboot_fail("wrong size for download data");
return;
}
mbr = download_buffer;
primary_gpt_h = (void *)mbr + sizeof(legacy_mbr);
pte_blk_cnt = BLOCK_CNT((primary_gpt_h->num_partition_entries * sizeof(gpt_entry)), dev_desc);
second_gpt_e = primary_gpt_h + PAD_TO_BLOCKSIZE(sizeof(gpt_header), dev_desc)
+ PAD_TO_BLOCKSIZE(GPT_ENTRY_NUMBERS * sizeof(gpt_entry), dev_desc);
/* Check the MBR signature */
if (le16_to_cpu(mbr->signature) != MSDOS_MBR_SIGNATURE){
error("MBR signature is wrong:"
"0x%X != 0x%X\n",
le16_to_cpu(mbr->signature),
MSDOS_MBR_SIGNATURE);
fastboot_fail("wrong data");
return;
}
/* Check the GPT header signature */
if (le64_to_cpu(primary_gpt_h->signature) != GPT_HEADER_SIGNATURE) {
error("GUID Partition Table Header signature is wrong:"
"0x%llX != 0x%llX\n",
le64_to_cpu(primary_gpt_h->signature),
GPT_HEADER_SIGNATURE);
fastboot_fail("wrong data");
return;
}
/* Write the Legacy MBR */
if (dev_desc->block_write(dev_desc->dev, 0, 1, mbr) != 1){
printf("Write mbr failed!\n");
goto err;
}
/* Write the First GPT to the block right after the Legacy MBR */
if (dev_desc->block_write(dev_desc->dev, 1, pte_blk_cnt + 1, primary_gpt_h) != pte_blk_cnt + 1){
printf("Write primary gpt failed!\n");
goto err;
}
/*Write the Second GPT at the end of the block*/
lbaint_t second_gpt_offset = le32_to_cpu(primary_gpt_h->last_usable_lba + 1);
if(dev_desc->block_write(dev_desc->dev, second_gpt_offset,
pte_blk_cnt + 1, second_gpt_e) != pte_blk_cnt + 1){
printf("write second gpt failed!\n");
goto err;
}
#if 0
/* do sanity check of the download data */
expected = sizeof(legacy_mbr)+ 1 * (PAD_TO_BLOCKSIZE(sizeof(gpt_header), dev_desc)+PAD_TO_BLOCKSIZE(GPT_ENTRY_NUMBERS
* sizeof(gpt_entry), dev_desc));
/*if(expected != download_bytes){
error("wrong size for download data, expected: %d\n", expected);
fastboot_fail("wrong size for download data");
return;
}*/
printf("legacy_mbr is %d, gpt_header is %d, gpt_entry is %d\n",sizeof(legacy_mbr),PAD_TO_BLOCKSIZE(sizeof(gpt_header),
dev_desc),PAD_TO_BLOCKSIZE(GPT_ENTRY_NUMBERS * sizeof(gpt_entry), dev_desc));
mbr = download_buffer;
gpt_h = (void *)mbr + sizeof(legacy_mbr);
gpt_e = (void *)gpt_h+PAD_TO_BLOCKSIZE(sizeof(gpt_header), dev_desc);
/* Check the MBR signature */
if (le16_to_cpu(mbr->signature) != MSDOS_MBR_SIGNATURE){
error("MBR signature is wrong:"
"0x%X != 0x%X\n",
le16_to_cpu(mbr->signature),
MSDOS_MBR_SIGNATURE);
fastboot_fail("wrong data");
return;
}
/* Check the GPT header signature */
if (le64_to_cpu(gpt_h->signature) != GPT_HEADER_SIGNATURE) {
error("GUID Partition Table Header signature is wrong:"
"0x%llX != 0x%llX\n",
le64_to_cpu(gpt_h->signature),
GPT_HEADER_SIGNATURE);
fastboot_fail("wrong data");
return;
}
const int pte_blk_cnt = BLOCK_CNT((gpt_h->num_partition_entries
* sizeof(gpt_entry)), dev_desc);
u32 calc_crc32;
u64 val;
printf("max lba: %x\n", (u32) dev_desc->lba);
printf("last_usable_lba is %d, my_lba is %d, pte_blk_cnt is %d\n",le32_to_cpu(gpt_h->last_usable_lba + 1),le32_to_cpu(gpt_h->my_lba),
pte_blk_cnt);
/* Write the Legacy MBR */
if (dev_desc->block_write(dev_desc->dev, 0, 1, mbr) != 1){
printf("Write mbr failed!\n");
goto err;
}
printf("last_usable_lba is %d, my_lba is %d, pte_blk_cnt is %d\n",le32_to_cpu(gpt_h->last_usable_lba + 1),le32_to_cpu(gpt_h->my_lba),
pte_blk_cnt);
/* Write the First GPT to the block right after the Legacy MBR */
if (dev_desc->block_write(dev_desc->dev, 1, 1, gpt_h) != 1){
printf("Write gpt header failed!\n");
goto err;
}
printf("last_usable_lba is %d, my_lba is %d, pte_blk_cnt is %d\n",le32_to_cpu(gpt_h->last_usable_lba + 1),le32_to_cpu(gpt_h->my_lba),
pte_blk_cnt);
if (dev_desc->block_write(dev_desc->dev, 2, pte_blk_cnt, gpt_e)
!= pte_blk_cnt){
printf("Write gpt_e failed!\n");
goto err;
}
printf("last_usable_lba is %d, my_lba is %d, pte_blk_cnt is %d\n",le32_to_cpu(gpt_h->last_usable_lba + 1),le32_to_cpu(gpt_h->my_lba),
pte_blk_cnt);
/* recalculate the values for the Second GPT Header */
printf("last_usable_lba is %d, my_lba is %d, pte_blk_cnt is %d\n",le32_to_cpu(gpt_h->last_usable_lba + 1),le32_to_cpu(gpt_h->my_lba),
pte_blk_cnt);
val = le64_to_cpu(gpt_h->my_lba);
gpt_h->my_lba = gpt_h->alternate_lba;
gpt_h->alternate_lba = cpu_to_le64(val);
gpt_h->header_crc32 = 0;
calc_crc32 = crc32(0, (const unsigned char *)gpt_h,
le32_to_cpu(gpt_h->header_size));
gpt_h->header_crc32 = cpu_to_le32(calc_crc32);
printf("last_usable_lba is %d, my_lba is %d, pte_blk_cnt is %d\n",le32_to_cpu(gpt_h->last_usable_lba + 1),le32_to_cpu(gpt_h->my_lba),
pte_blk_cnt);
if (dev_desc->block_write(dev_desc->dev,
le32_to_cpu(gpt_h->last_usable_lba + 1),
pte_blk_cnt, gpt_e) != pte_blk_cnt){
printf("Write second gpt_e failed!\n");
goto err;
}
if (dev_desc->block_write(dev_desc->dev,
le32_to_cpu(gpt_h->my_lba), 1, gpt_h) != 1){
printf("Write second gpt_h failed!\n");
goto err;
}
#endif
printf("GPT successfully written to block device!\n");
fastboot_okay("");
return;
err:
error("flash partition data failed: '%s'\n", cmd);
fastboot_fail("cannot flash partition");
return;
}else{
ret = get_partition_info_efi_by_name(dev_desc, cmd, &info);
if (ret) {
error("cannot find partition: '%s'\n", cmd);
fastboot_fail("cannot find partition");
return;
}
if (is_sparse_image(download_buffer))
write_sparse_image(dev_desc, &info, cmd, download_buffer,
download_bytes);
else
write_raw_image(dev_desc, &info, cmd, download_buffer,
download_bytes);
}
}
