struct sd_card *
mmchs_card_initialize(struct sd_slot *slot)
{
// mmchs_init(1);
struct sd_card *card;
card = &slot->card;
memset(card, 0, sizeof(struct sd_card));
card->slot = slot;
if (card_goto_idle_state()) {
mmc_log_warn(&log, "Failed to go idle state\n");
return NULL;
}
if (card_identification()) {
mmc_log_warn(&log, "Failed to do card_identification\n");
return NULL;
}
if (card_query_voltage_and_type(&slot->card.regs)) {
mmc_log_warn(&log,
"Failed to do card_query_voltage_and_type\n");
return NULL;
}
if (card_identify(&slot->card.regs)) {
mmc_log_warn(&log, "Failed to identify card\n");
return NULL;
}
/* We have now initialized the hardware identified the card */
if (card_csd(&slot->card.regs)) {
mmc_log_warn(&log,
"failed to read csd (card specific data)\n");
return NULL;
}
if (select_card(&slot->card.regs)) {
mmc_log_warn(&log, "Failed to select card\n");
return NULL;
}
if (SD_CSD_READ_BL_LEN(slot->card.regs.csd) != 0x09) {
/* for CSD version 2.0 the value is fixed to 0x09 and means a
* block size of 512 */
mmc_log_warn(&log, "Block size expect to be 512\n");
return NULL;
}
slot->card.blk_size = 512; /* HARDCODED value */
slot->card.blk_count = SD_CSD_V2_CAPACITY(slot->card.regs.csd);
slot->card.state = SD_MODE_DATA_TRANSFER_MODE;
memset(slot->card.part, 0, sizeof(slot->card.part));
memset(slot->card.subpart, 0, sizeof(slot->card.subpart));
slot->card.part[0].dv_base = 0;
slot->card.part[0].dv_size =
(unsigned long long) SD_CSD_V2_CAPACITY(slot->card.regs.csd) * 512;
return &slot->card;
}
int main(void)
{
struct sd_card card;
int i;
unsigned char buf[1024];
memset(buf, 0, 1024);
if (mmchs_init(1)) {
printf("Failed to initialize the host controller\n");
return 1;
}
if (card_goto_idle_state()) {
printf("Failed to go into idle state\n");
return 1;
}
if (card_identification()) {
printf("Failed to go card_identification\n");
return 1;
}
if (card_query_voltage_and_type(&card)) {
printf("Failed to go card_query_voltage_and_type\n");
return 1;
}
if (card_identify(&card)) {
printf("Failed to identify card\n");
return 1;
}
/* We have now initialized the hardware identified the card */
if (card_csd(&card)) {
printf("failed to read csd (card specific data)\n");
return 1;
}
if (select_card(&card)) {
printf("Failed to select card\n");
return 1;
}
if (read_single_block(&card, 0, buf)) {
printf("Failed to read a single block\n");
return 1;
}
/* check signature */
if (!(buf[0x01fe] == 0x55 && buf[0x01ff] == 0xaa)) {
printf("Failed to find MBR signature\n");
return 1;
}
for (i = 0; i < 512; i++) {
buf[i] = i % 256;
}
if (read_single_block(&card, 0, buf)) {
printf("Failed to read a single block\n");
return 1;
}
/* check signature */
if (!(buf[0x01fe] == 0x55 && buf[0x01ff] == 0xaa)) {
printf("Failed to find MBR signature\n");
return 1;
}
/* DESCUCTIVE... */
for (i = 0; i < 512; i++) {
buf[i] = i % 256;
}
if (write_single_block(&card, 0xfffff, buf)) {
printf("Failed to write a single block\n");
return 1;
}
for (i = 0; i < 512; i++) {
buf[i] = 0;
}
if (read_single_block(&card, 0xfffff, buf)) {
printf("Failed to write a single block (check)\n");
return 1;
}
for (i = 0; i < 512; i++) {
if (!buf[i] == i % 256) {
printf("Failed to write a single block and read it again \n");
return 1;
}
}
printf("Finished\n");
return 0;
}
