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hekate/ipl/sdmmc.c
Kostas Missos 884ad1f6e6 Add support for SD cards that report wrong info 
Some vendors, *I'm looking at you Samsung*, report support for 1.8 voltage, even though the card does not support it.

So, disable low voltage support for now until the behavior is changed to act more like what Linux does. (re-initializing the SD card and disables the low voltage switch).

Fix the switch to high speed mode for high voltages also.

Additionally, correct the IF COND reply. 0xAA is the important part.
2018-05-06 10:53:35 +03:00

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/*
* Copyright (c) 2018 naehrwert
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <string.h>
#include "sdmmc.h"
#include "mmc.h"
#include "sd.h"
#include "util.h"
#include "heap.h"
/*#include "gfx.h"
extern gfx_ctxt_t gfx_ctxt;
extern gfx_con_t gfx_con;
#define DPRINTF(...) gfx_printf(&gfx_con, __VA_ARGS__)*/
#define DPRINTF(...)
static inline u32 unstuff_bits(u32 *resp, u32 start, u32 size)
{
const u32 mask = (size < 32 ? 1 << size : 0) - 1;
const u32 off = 3 - ((start) / 32);
const u32 shft = (start) & 31;
u32 res = resp[off] >> shft;
if (size + shft > 32)
res |= resp[off - 1] << ((32 - shft) % 32);
return res & mask;
}
/*
* Common functions for SD and MMC.
*/
static int _sdmmc_storage_check_result(u32 res)
{
//Error mask:
//R1_OUT_OF_RANGE, R1_ADDRESS_ERROR, R1_BLOCK_LEN_ERROR,
//R1_ERASE_SEQ_ERROR, R1_ERASE_PARAM, R1_WP_VIOLATION,
//R1_LOCK_UNLOCK_FAILED, R1_COM_CRC_ERROR, R1_ILLEGAL_COMMAND,
//R1_CARD_ECC_FAILED, R1_CC_ERROR, R1_ERROR, R1_CID_CSD_OVERWRITE,
//R1_WP_ERASE_SKIP, R1_ERASE_RESET, R1_SWITCH_ERROR
if (!(res & 0xFDF9A080))
return 1;
//TODO: R1_SWITCH_ERROR we can skip for certain card types.
return 0;
}
static int _sdmmc_storage_execute_cmd_type1_ex(sdmmc_storage_t *storage, u32 *resp, u32 cmd, u32 arg, u32 check_busy, u32 expected_state, u32 mask)
{
sdmmc_cmd_t cmdbuf;
sdmmc_init_cmd(&cmdbuf, cmd, arg, SDMMC_RSP_TYPE_1, check_busy);
if (!sdmmc_execute_cmd(storage->sdmmc, &cmdbuf, 0, 0))
return 0;
sdmmc_get_rsp(storage->sdmmc, resp, 4, SDMMC_RSP_TYPE_1);
if (mask)
*resp &= ~mask;
if (_sdmmc_storage_check_result(*resp))
if (expected_state == 0x10 || R1_CURRENT_STATE(*resp) == expected_state)
return 1;
return 0;
}
static int _sdmmc_storage_execute_cmd_type1(sdmmc_storage_t *storage, u32 cmd, u32 arg, u32 check_busy, u32 expected_state)
{
u32 tmp;
return _sdmmc_storage_execute_cmd_type1_ex(storage, &tmp, cmd, arg, check_busy, expected_state, 0);
}
static int _sdmmc_storage_go_idle_state(sdmmc_storage_t *storage)
{
sdmmc_cmd_t cmd;
sdmmc_init_cmd(&cmd, MMC_GO_IDLE_STATE, 0, SDMMC_RSP_TYPE_0, 0);
return sdmmc_execute_cmd(storage->sdmmc, &cmd, 0, 0);
}
static int _sdmmc_storage_get_cid(sdmmc_storage_t *storage, void *buf)
{
sdmmc_cmd_t cmd;
sdmmc_init_cmd(&cmd, MMC_ALL_SEND_CID, 0, SDMMC_RSP_TYPE_2, 0);
if (!sdmmc_execute_cmd(storage->sdmmc, &cmd, 0, 0))
return 0;
sdmmc_get_rsp(storage->sdmmc, buf, 0x10, SDMMC_RSP_TYPE_2);
return 1;
}
static int _sdmmc_storage_select_card(sdmmc_storage_t *storage)
{
return _sdmmc_storage_execute_cmd_type1(storage, MMC_SELECT_CARD, storage->rca << 16, 1, 0x10);
}
static int _sdmmc_storage_get_csd(sdmmc_storage_t *storage, void *buf)
{
sdmmc_cmd_t cmdbuf;
sdmmc_init_cmd(&cmdbuf, MMC_SEND_CSD, storage->rca << 16, SDMMC_RSP_TYPE_2, 0);
if (!sdmmc_execute_cmd(storage->sdmmc, &cmdbuf, 0, 0))
return 0;
sdmmc_get_rsp(storage->sdmmc, buf, 0x10, SDMMC_RSP_TYPE_2);
return 1;
}
static int _sdmmc_storage_set_blocklen(sdmmc_storage_t *storage, u32 blocklen)
{
return _sdmmc_storage_execute_cmd_type1(storage, MMC_SET_BLOCKLEN, blocklen, 0, R1_STATE_TRAN);
}
static int _sdmmc_storage_get_status(sdmmc_storage_t *storage, u32 *resp, u32 mask)
{
return _sdmmc_storage_execute_cmd_type1_ex(storage, resp, MMC_SEND_STATUS, storage->rca << 16, 0, R1_STATE_TRAN, mask);
}
static int _sdmmc_storage_check_status(sdmmc_storage_t *storage)
{
u32 tmp;
return _sdmmc_storage_get_status(storage, &tmp, 0);
}
static int _sdmmc_storage_readwrite_ex(sdmmc_storage_t *storage, u32 *blkcnt_out, u32 sector, u32 num_sectors, void *buf, u32 is_write)
{
sdmmc_cmd_t cmdbuf;
sdmmc_init_cmd(&cmdbuf, is_write ? MMC_WRITE_MULTIPLE_BLOCK : MMC_READ_MULTIPLE_BLOCK, sector, SDMMC_RSP_TYPE_1, 0);
sdmmc_req_t reqbuf;
reqbuf.buf = buf;
reqbuf.num_sectors = num_sectors;
reqbuf.blksize = 512;
reqbuf.is_write = is_write;
reqbuf.is_multi_block = 1;
reqbuf.is_auto_cmd12 = 1;
if (!sdmmc_execute_cmd(storage->sdmmc, &cmdbuf, &reqbuf, blkcnt_out))
{
u32 tmp = 0;
sdmmc_stop_transmission(storage->sdmmc, &tmp);
_sdmmc_storage_get_status(storage, &tmp, 0);
return 0;
}
return 1;
}
int sdmmc_storage_end(sdmmc_storage_t *storage)
{
if (!_sdmmc_storage_go_idle_state(storage))
return 0;
sdmmc_end(storage->sdmmc);
return 1;
}
static int _sdmmc_storage_readwrite(sdmmc_storage_t *storage, u32 sector, u32 num_sectors, void *buf, u32 is_write)
{
u8 *bbuf = (u8 *)buf;
while (num_sectors)
{
u32 blkcnt = 0;
//Retry once on error.
if (!_sdmmc_storage_readwrite_ex(storage, &blkcnt, sector, MIN(num_sectors, 0xFFFF), bbuf, is_write))
if (!_sdmmc_storage_readwrite_ex(storage, &blkcnt, sector, MIN(num_sectors, 0xFFFF), bbuf, is_write))
return 0;
DPRINTF("readwrite: %08X\n", blkcnt);
sector += blkcnt;
num_sectors -= blkcnt;
bbuf += 512 * blkcnt;
}
}
int sdmmc_storage_read(sdmmc_storage_t *storage, u32 sector, u32 num_sectors, void *buf)
{
return _sdmmc_storage_readwrite(storage, sector, num_sectors, buf, 0);
}
int sdmmc_storage_write(sdmmc_storage_t *storage, u32 sector, u32 num_sectors, void *buf)
{
return _sdmmc_storage_readwrite(storage, sector, num_sectors, buf, 1);
}
/*
* MMC specific functions.
*/
static int _mmc_storage_get_op_cond_inner(sdmmc_storage_t *storage, u32 *pout, u32 power)
{
sdmmc_cmd_t cmd;
u32 arg = 0;
switch (power)
{
case SDMMC_POWER_1_8:
arg = 0x40000080; //Sector access, voltage.
break;
case SDMMC_POWER_3_3:
arg = 0x403F8000; //Sector access, voltage.
break;
default:
return 0;
}
sdmmc_init_cmd(&cmd, MMC_SEND_OP_COND, arg, SDMMC_RSP_TYPE_3, 0);
if (!sdmmc_execute_cmd(storage->sdmmc, &cmd, 0, 0))
return 0;
return sdmmc_get_rsp(storage->sdmmc, pout, 4, SDMMC_RSP_TYPE_3);
}
static int _mmc_storage_get_op_cond(sdmmc_storage_t *storage, u32 power)
{
u32 timeout = get_tmr() + 1500000;
while (1)
{
u32 cond = 0;
if (!_mmc_storage_get_op_cond_inner(storage, &cond, power))
break;
if (cond & 0x80000000)
{
if (cond & 0x40000000)
storage->has_sector_access = 1;
return 1;
}
if (get_tmr() > timeout)
break;
sleep(1000);
}
return 0;
}
static int _mmc_storage_set_relative_addr(sdmmc_storage_t *storage)
{
return _sdmmc_storage_execute_cmd_type1(storage, MMC_SET_RELATIVE_ADDR, storage->rca << 16, 0, 0x10);
}
static int _mmc_storage_get_ext_csd(sdmmc_storage_t *storage, void *buf)
{
sdmmc_cmd_t cmdbuf;
sdmmc_init_cmd(&cmdbuf, MMC_SEND_EXT_CSD, 0, SDMMC_RSP_TYPE_1, 0);
sdmmc_req_t reqbuf;
reqbuf.buf = buf;
reqbuf.blksize = 512;
reqbuf.num_sectors = 1;
reqbuf.is_write = 0;
reqbuf.is_multi_block = 0;
reqbuf.is_auto_cmd12 = 0;
if (!sdmmc_execute_cmd(storage->sdmmc, &cmdbuf, &reqbuf, 0))
return 0;
u32 tmp = 0;
sdmmc_get_rsp(storage->sdmmc, &tmp, 4, SDMMC_RSP_TYPE_1);
return _sdmmc_storage_check_result(tmp);
}
static int _mmc_storage_switch(sdmmc_storage_t *storage, u32 arg)
{
return _sdmmc_storage_execute_cmd_type1(storage, MMC_SWITCH, arg, 1, 0x10);
}
static int _mmc_storage_switch_buswidth(sdmmc_storage_t *storage, u32 bus_width)
{
if (bus_width == SDMMC_BUS_WIDTH_1)
return 1;
u32 arg = 0;
switch (bus_width)
{
case SDMMC_BUS_WIDTH_4:
arg = SDMMC_SWITCH(MMC_SWITCH_MODE_WRITE_BYTE, EXT_CSD_BUS_WIDTH, EXT_CSD_BUS_WIDTH_4);
break;
case SDMMC_BUS_WIDTH_8:
arg = SDMMC_SWITCH(MMC_SWITCH_MODE_WRITE_BYTE, EXT_CSD_BUS_WIDTH, EXT_CSD_BUS_WIDTH_8);
break;
}
if (_mmc_storage_switch(storage, arg))
if (_sdmmc_storage_check_status(storage))
{
sdmmc_set_bus_width(storage->sdmmc, bus_width);
return 1;
}
return 0;
}
static int _mmc_storage_enable_HS(sdmmc_storage_t *storage, int check)
{
if (!_mmc_storage_switch(storage, SDMMC_SWITCH(MMC_SWITCH_MODE_WRITE_BYTE, EXT_CSD_HS_TIMING, EXT_CSD_TIMING_HS)))
return 0;
if (check && !_sdmmc_storage_check_status(storage))
return 0;
if (!sdmmc_setup_clock(storage->sdmmc, 2))
return 0;
DPRINTF("[mmc] switched to HS\n");
if (check || _sdmmc_storage_check_status(storage))
return 1;
return 0;
}
static int _mmc_storage_enable_HS200(sdmmc_storage_t *storage)
{
if (!_mmc_storage_switch(storage, SDMMC_SWITCH(MMC_SWITCH_MODE_WRITE_BYTE, EXT_CSD_HS_TIMING, EXT_CSD_TIMING_HS200)))
return 0;
if (!sdmmc_setup_clock(storage->sdmmc, 3))
return 0;
if (!sdmmc_config_tuning(storage->sdmmc, 3, MMC_SEND_TUNING_BLOCK_HS200))
return 0;
DPRINTF("[mmc] switched to HS200\n");
return _sdmmc_storage_check_status(storage);
}
static int _mmc_storage_enable_HS400(sdmmc_storage_t *storage)
{
if (!_mmc_storage_enable_HS200(storage))
return 0;
sdmmc_get_venclkctl(storage->sdmmc);
if (!_mmc_storage_enable_HS(storage, 0))
return 0;
if (!_mmc_storage_switch(storage, SDMMC_SWITCH(MMC_SWITCH_MODE_WRITE_BYTE, EXT_CSD_BUS_WIDTH, EXT_CSD_DDR_BUS_WIDTH_8)))
return 0;
if (!_mmc_storage_switch(storage, SDMMC_SWITCH(MMC_SWITCH_MODE_WRITE_BYTE, EXT_CSD_HS_TIMING, EXT_CSD_TIMING_HS400)))
return 0;
if (!sdmmc_setup_clock(storage->sdmmc, 4))
return 0;
DPRINTF("[mmc] switched to HS400\n");
return _sdmmc_storage_check_status(storage);
}
static int _mmc_storage_enable_highspeed(sdmmc_storage_t *storage, u32 card_type, u32 type)
{
//TODO: this should be a config item.
//---v
if (!1 || sdmmc_get_voltage(storage->sdmmc) != SDMMC_POWER_1_8)
goto out;
if (sdmmc_get_bus_width(storage->sdmmc) == SDMMC_BUS_WIDTH_8 &&
card_type & EXT_CSD_CARD_TYPE_HS400_1_8V &&
type == 4)
return _mmc_storage_enable_HS400(storage);
if (sdmmc_get_bus_width(storage->sdmmc) == SDMMC_BUS_WIDTH_8 ||
sdmmc_get_bus_width(storage->sdmmc) == SDMMC_BUS_WIDTH_4
&& card_type & EXT_CSD_CARD_TYPE_HS200_1_8V
&& (type == 4 || type == 3))
return _mmc_storage_enable_HS200(storage);
out:;
if (card_type & EXT_CSD_CARD_TYPE_HS_52)
return _mmc_storage_enable_HS(storage, 1);
return 1;
}
static int _mmc_storage_enable_bkops(sdmmc_storage_t *storage)
{
if (!_mmc_storage_switch(storage, SDMMC_SWITCH(MMC_SWITCH_MODE_SET_BITS, EXT_CSD_BKOPS_EN, EXT_CSD_BKOPS_LEVEL_2)))
return 0;
return _sdmmc_storage_check_status(storage);
}
int sdmmc_storage_init_mmc(sdmmc_storage_t *storage, sdmmc_t *sdmmc, u32 id, u32 bus_width, u32 type)
{
memset(storage, 0, sizeof(sdmmc_storage_t));
storage->sdmmc = sdmmc;
storage->rca = 2; //TODO: this could be a config item.
if (!sdmmc_init(sdmmc, id, SDMMC_POWER_1_8, SDMMC_BUS_WIDTH_1, 0, 0))
return 0;
DPRINTF("[mmc] after init\n");
sleep(1000 + (74000 + sdmmc->divisor - 1) / sdmmc->divisor);
if (!_sdmmc_storage_go_idle_state(storage))
return 0;
DPRINTF("[mmc] went to idle state\n");
if (!_mmc_storage_get_op_cond(storage, SDMMC_POWER_1_8))
return 0;
DPRINTF("[mmc] got op cond\n");
if (!_sdmmc_storage_get_cid(storage, storage->cid))
return 0;
DPRINTF("[mmc] got cid\n");
if (!_mmc_storage_set_relative_addr(storage))
return 0;
DPRINTF("[mmc] set relative addr\n");
if (!_sdmmc_storage_get_csd(storage, storage->csd))
return 0;
DPRINTF("[mmc] got csd\n");
if (!sdmmc_setup_clock(storage->sdmmc, 1))
return 0;
DPRINTF("[mmc] after setup clock\n");
if (!_sdmmc_storage_select_card(storage))
return 0;
DPRINTF("[mmc] card selected\n");
if (!_sdmmc_storage_set_blocklen(storage, 512))
return 0;
DPRINTF("[mmc] set blocklen to 512\n");
u32 *csd = (u32 *)storage->csd;
//Check system specification version, only version 4.0 and later support below features.
if (unstuff_bits(csd, 122, 4) < CSD_SPEC_VER_4)
{
storage->sec_cnt = (1 + unstuff_bits(csd, 62, 12)) << (unstuff_bits(csd, 47, 3) + 2);
return 1;
}
if (!_mmc_storage_switch_buswidth(storage, bus_width))
return 0;
DPRINTF("[mmc] switched buswidth\n");
u8 *ext_csd = (u8 *)malloc(512);
if (!_mmc_storage_get_ext_csd(storage, ext_csd))
{
free(ext_csd);
return 0;
}
//gfx_hexdump(&gfx_con, 0, ext_csd, 512);
storage->sec_cnt = *(u32 *)&ext_csd[EXT_CSD_SEC_CNT];
if (storage->cid[0xE] == 0x11 && ext_csd[EXT_CSD_BKOPS_EN] & EXT_CSD_BKOPS_LEVEL_2)
_mmc_storage_enable_bkops(storage);
if (!_mmc_storage_enable_highspeed(storage, ext_csd[EXT_CSD_CARD_TYPE], type))
{
free(ext_csd);
return 0;
}
DPRINTF("[mmc] switched to possible highspeed mode\n");
sdmmc_sd_clock_ctrl(storage->sdmmc, 1);
free(ext_csd);
return 1;
}
int sdmmc_storage_set_mmc_partition(sdmmc_storage_t *storage, u32 partition)
{
if (!_mmc_storage_switch(storage, SDMMC_SWITCH(MMC_SWITCH_MODE_WRITE_BYTE, EXT_CSD_PART_CONFIG, partition)))
return 0;
if (!_sdmmc_storage_check_status(storage))
return 0;
storage->partition = partition;
return 1;
}
/*
* SD specific functions.
*/
static int _sd_storage_execute_app_cmd(sdmmc_storage_t *storage, u32 expected_state, u32 mask, sdmmc_cmd_t *cmd, sdmmc_req_t *req, u32 *blkcnt_out)
{
u32 tmp;
if (!_sdmmc_storage_execute_cmd_type1_ex(storage, &tmp, MMC_APP_CMD, storage->rca << 16, 0, expected_state, mask))
return 0;
return sdmmc_execute_cmd(storage->sdmmc, cmd, req, blkcnt_out);
}
static int _sd_storage_execute_app_cmd_type1(sdmmc_storage_t *storage, u32 *resp, u32 cmd, u32 arg, u32 check_busy, u32 expected_state)
{
if (!_sdmmc_storage_execute_cmd_type1(storage, MMC_APP_CMD, storage->rca << 16, 0, R1_STATE_TRAN))
return 0;
return _sdmmc_storage_execute_cmd_type1_ex(storage, resp, cmd, arg, check_busy, expected_state, 0);
}
static int _sd_storage_send_if_cond(sdmmc_storage_t *storage)
{
sdmmc_cmd_t cmdbuf;
sdmmc_init_cmd(&cmdbuf, SD_SEND_IF_COND, 0x1AA, SDMMC_RSP_TYPE_5, 0);
if (!sdmmc_execute_cmd(storage->sdmmc, &cmdbuf, 0, 0))
return 0;
//TODO: we may have received a timeout error in the above request, which indicates a version 1 card.
u32 resp = 0;
if (!sdmmc_get_rsp(storage->sdmmc, &resp, 4, SDMMC_RSP_TYPE_5))
return 0;
return (resp & 0xFF) == 0xAA ? 1 : 0;
}
static int _sd_storage_get_op_cond_once(sdmmc_storage_t *storage, u32 *cond, int is_version_1, int supports_low_voltage)
{
sdmmc_cmd_t cmdbuf;
u32 arg = (((~is_version_1 & 1) << 28) & 0xBFFFFFFF | ((~is_version_1 & 1) << 30)) & 0xFEFFFFFF | ((supports_low_voltage & ~is_version_1 & 1) << 24) | 0x100000;
sdmmc_init_cmd(&cmdbuf, SD_APP_OP_COND, arg, SDMMC_RSP_TYPE_3, 0);
if (!_sd_storage_execute_app_cmd(storage, 0x10, is_version_1 ? 0x400000 : 0, &cmdbuf, 0, 0))
return 0;
return sdmmc_get_rsp(storage->sdmmc, cond, 4, SDMMC_RSP_TYPE_3);
}
static int _sd_storage_get_op_cond(sdmmc_storage_t *storage, int is_version_1, int supports_low_voltage)
{
u32 timeout = get_tmr() + 1500000;
while (1)
{
u32 cond = 0;
if (!_sd_storage_get_op_cond_once(storage, &cond, is_version_1, supports_low_voltage))
break;
if (cond & 0x80000000)
{
if (cond & 0x40000000)
storage->has_sector_access = 1;
// TODO: Some SD Card incorrectly report low voltage support
// Disable it for now
if (cond & 0x1000000 && supports_low_voltage && 0)
{
//The low voltage regulator configuration is valid for SDMMC1 only.
if (storage->sdmmc->id == SDMMC_1 &&
_sdmmc_storage_execute_cmd_type1(storage, SD_SWITCH_VOLTAGE, 0, 0, R1_STATE_READY))
{
if (!sdmmc_enable_low_voltage(storage->sdmmc))
return 0;
storage->is_low_voltage = 1;
DPRINTF("-> switched to low voltage\n");
}
}
return 1;
}
if (get_tmr() > timeout)
break;
sleep(10000); // Needs to be at least 10ms for some SD Cards
}
return 0;
}
static int _sd_storage_get_rca(sdmmc_storage_t *storage)
{
sdmmc_cmd_t cmdbuf;
sdmmc_init_cmd(&cmdbuf, SD_SEND_RELATIVE_ADDR, 0, SDMMC_RSP_TYPE_4, 0);
u32 timeout = get_tmr() + 1500000;
while (1)
{
if (!sdmmc_execute_cmd(storage->sdmmc, &cmdbuf, 0, 0))
break;
u32 resp = 0;
if (!sdmmc_get_rsp(storage->sdmmc, &resp, 4, SDMMC_RSP_TYPE_4))
break;
if (resp >> 16)
{
storage->rca = resp >> 16;
return 1;
}
if (get_tmr() > timeout)
break;
sleep(1000);
}
return 0;
}
int _sd_storage_get_scr(sdmmc_storage_t *storage, void *buf)
{
sdmmc_cmd_t cmdbuf;
sdmmc_init_cmd(&cmdbuf, SD_APP_SEND_SCR, 0, SDMMC_RSP_TYPE_1, 0);
sdmmc_req_t reqbuf;
reqbuf.buf = buf;
reqbuf.blksize = 8;
reqbuf.num_sectors = 1;
reqbuf.is_write = 0;
reqbuf.is_multi_block = 0;
reqbuf.is_auto_cmd12 = 0;
if (!_sd_storage_execute_app_cmd(storage, R1_STATE_TRAN, 0, &cmdbuf, &reqbuf, 0))
return 0;
u32 tmp = 0;
sdmmc_get_rsp(storage->sdmmc, &tmp, 4, SDMMC_RSP_TYPE_1);
return _sdmmc_storage_check_result(tmp);
}
int _sd_storage_switch_get(sdmmc_storage_t *storage, void *buf)
{
sdmmc_cmd_t cmdbuf;
sdmmc_init_cmd(&cmdbuf, SD_SWITCH, 0xFFFFFF, SDMMC_RSP_TYPE_1, 0);
sdmmc_req_t reqbuf;
reqbuf.buf = buf;
reqbuf.blksize = 64;
reqbuf.num_sectors = 1;
reqbuf.is_write = 0;
reqbuf.is_multi_block = 0;
reqbuf.is_auto_cmd12 = 0;
if (!sdmmc_execute_cmd(storage->sdmmc, &cmdbuf, &reqbuf, 0))
return 0;
u32 tmp = 0;
sdmmc_get_rsp(storage->sdmmc, &tmp, 4, SDMMC_RSP_TYPE_1);
return _sdmmc_storage_check_result(tmp);
}
int _sd_storage_switch(sdmmc_storage_t *storage, void *buf, int flag, u32 arg)
{
sdmmc_cmd_t cmdbuf;
sdmmc_init_cmd(&cmdbuf, SD_SWITCH, arg | (flag << 31) | 0xFFFFF0, SDMMC_RSP_TYPE_1, 0);
sdmmc_req_t reqbuf;
reqbuf.buf = buf;
reqbuf.blksize = 64;
reqbuf.num_sectors = 1;
reqbuf.is_write = 0;
reqbuf.is_multi_block = 0;
reqbuf.is_auto_cmd12 = 0;
if (!sdmmc_execute_cmd(storage->sdmmc, &cmdbuf, &reqbuf, 0))
return 0;
u32 tmp = 0;
sdmmc_get_rsp(storage->sdmmc, &tmp, 4, SDMMC_RSP_TYPE_1);
return _sdmmc_storage_check_result(tmp);
}
int _sd_storage_enable_highspeed(sdmmc_storage_t *storage, u32 hs_type, u8 *buf)
{
if (!_sd_storage_switch(storage, buf, 0, hs_type))
return 0;
u32 type_out = buf[16] & 0xF;
if (type_out != hs_type)
return 0;
if (((u16)buf[0] << 8) | buf[1] < 0x320)
{
if (!_sd_storage_switch(storage, buf, 1, hs_type))
return 0;
if (type_out != buf[16] & 0xF)
return 0;
}
return 1;
}
int _sd_storage_enable_highspeed_low_volt(sdmmc_storage_t *storage, u32 type, u8 *buf)
{
if (sdmmc_get_bus_width(storage->sdmmc) != SDMMC_BUS_WIDTH_4)
return 0;
if (!_sd_storage_switch_get(storage, buf))
return 0;
u32 hs_type = 0;
switch (type)
{
case 11:
if (buf[13] & 8)
{
type = 11;
hs_type = 3;
break;
}
//Fall through.
case 10:
if (!(buf[13] & 4))
return 0;
type = 10;
hs_type = 2;
break;
default:
return 0;
break;
}
if (!_sd_storage_enable_highspeed(storage, hs_type, buf))
return 0;
if (!sdmmc_setup_clock(storage->sdmmc, type))
return 0;
if (!sdmmc_config_tuning(storage->sdmmc, type, MMC_SEND_TUNING_BLOCK))
return 0;
return _sdmmc_storage_check_status(storage);
}
int _sd_storage_enable_highspeed_high_volt(sdmmc_storage_t *storage, u8 *buf)
{
if (!_sd_storage_switch_get(storage, buf))
return 0;
if (!(buf[13] & 2))
return 1;
if (!_sd_storage_enable_highspeed(storage, 1, buf))
return 0;
if (!_sdmmc_storage_check_status(storage))
return 0;
return sdmmc_setup_clock(storage->sdmmc, 7);
}
int sdmmc_storage_init_sd(sdmmc_storage_t *storage, sdmmc_t *sdmmc, u32 id, u32 bus_width, u32 type)
{
memset(storage, 0, sizeof(sdmmc_storage_t));
storage->sdmmc = sdmmc;
if (!sdmmc_init(sdmmc, id, SDMMC_POWER_3_3, SDMMC_BUS_WIDTH_1, 5, 0))
return 0;
DPRINTF("[sd] after init\n");
sleep(1000 + (74000 + sdmmc->divisor - 1) / sdmmc->divisor);
if (!_sdmmc_storage_go_idle_state(storage))
return 0;
DPRINTF("[sd] went to idle state\n");
if (!_sd_storage_send_if_cond(storage))
return 0;
DPRINTF("[sd] after send if cond\n");
//TODO: use correct version here -----v
if (!_sd_storage_get_op_cond(storage, 0, bus_width == SDMMC_BUS_WIDTH_4 && (type | 1) == 11))
return 0;
DPRINTF("[sd] got op cond\n");
if (!_sdmmc_storage_get_cid(storage, storage->cid))
return 0;
DPRINTF("[sd] got cid\n");
if (!_sd_storage_get_rca(storage))
return 0;
DPRINTF("[sd] got rca (= %04X)\n", storage->rca);
if (!_sdmmc_storage_get_csd(storage, storage->csd))
return 0;
DPRINTF("[sd] got csd\n");
//Parse CSD.
u32 *csd = (u32 *)storage->csd;
u32 csd_struct = unstuff_bits(csd, 126, 2);
switch (csd_struct)
{
case 0:
storage->sec_cnt = (1 + unstuff_bits(csd, 62, 12)) << (unstuff_bits(csd, 47, 3) + 2);
break;
case 1:
storage->sec_cnt = (1 + unstuff_bits(csd, 48, 22)) << 10;
break;
default:
DPRINTF("[sd] Unknown CSD structure %d\n", csd_struct);
//TODO: I've encountered this with one of my SD cards, but
// according to the spec only version 0 and 1 are
// supposed to be in use (mine was version 2).
//return 0;
break;
}
if (!storage->is_low_voltage)
{
if (!sdmmc_setup_clock(storage->sdmmc, 6))
return 0;
DPRINTF("[sd] after setup clock\n");
}
if (!_sdmmc_storage_select_card(storage))
return 0;
DPRINTF("[sd] card selected\n");
if (!_sdmmc_storage_set_blocklen(storage, 512))
return 0;
DPRINTF("[sd] set blocklen to 512\n");
u32 tmp = 0;
if (!_sd_storage_execute_app_cmd_type1(storage, &tmp, SD_APP_SET_CLR_CARD_DETECT, 0, 0, R1_STATE_TRAN))
return 0;
DPRINTF("[sd] cleared card detect\n");
u8 *buf = (u8 *)malloc(512);
if (!_sd_storage_get_scr(storage, buf))
return 0;
memcpy(storage->scr, buf, 8);
DPRINTF("[sd] got scr\n");
if (bus_width == SDMMC_BUS_WIDTH_4 && storage->scr[1] & 4)
{
if (!_sd_storage_execute_app_cmd_type1(storage, &tmp, SD_APP_SET_BUS_WIDTH, SD_BUS_WIDTH_4, 0, R1_STATE_TRAN))
{
free(buf);
return 0;
}
sdmmc_set_bus_width(storage->sdmmc, SDMMC_BUS_WIDTH_4);
DPRINTF("[sd] switched to wide bus width\n");
}
else
DPRINTF("[sd] SD does not support wide bus width\n");
if (storage->is_low_voltage)
{
if (!_sd_storage_enable_highspeed_low_volt(storage, type, buf))
{
free(buf);
return 0;
}
DPRINTF("[sd] enabled highspeed (low voltage)\n");
}
else if (type != 6 && (storage->scr[0] & 0xF) != 0)
{
if (!_sd_storage_enable_highspeed_high_volt(storage, buf))
{
free(buf);
return 0;
}
DPRINTF("[sd] enabled highspeed (high voltage)\n");
}
sdmmc_sd_clock_ctrl(sdmmc, 1);
free(buf);
return 1;
}
/*
* Gamecard specific functions.
*/
int _gc_storage_custom_cmd(sdmmc_storage_t *storage, void *buf)
{
u32 resp;
sdmmc_cmd_t cmdbuf;
sdmmc_init_cmd(&cmdbuf, 60, 0, SDMMC_RSP_TYPE_1, 1);
sdmmc_req_t reqbuf;
reqbuf.buf = buf;
reqbuf.blksize = 0x40;
reqbuf.num_sectors = 1;
reqbuf.is_write = 1;
reqbuf.is_multi_block = 0;
reqbuf.is_auto_cmd12 = 0;
if (!sdmmc_execute_cmd(storage->sdmmc, &cmdbuf, &reqbuf, 0))
{
sdmmc_stop_transmission(storage->sdmmc, &resp);
return 0;
}
if (!sdmmc_get_rsp(storage->sdmmc, &resp, 4, SDMMC_RSP_TYPE_1))
return 0;
if (!_sdmmc_storage_check_result(resp))
return 0;
return _sdmmc_storage_check_status(storage);
}
int sdmmc_storage_init_gc(sdmmc_storage_t *storage, sdmmc_t *sdmmc)
{
memset(storage, 0, sizeof(sdmmc_storage_t));
storage->sdmmc = sdmmc;
if (!sdmmc_init(sdmmc, SDMMC_2, SDMMC_POWER_1_8, SDMMC_BUS_WIDTH_8, 14, 0))
return 0;
DPRINTF("[gc] after init\n");
sleep(1000 + (10000 + sdmmc->divisor - 1) / sdmmc->divisor);
if (!sdmmc_config_tuning(storage->sdmmc, 14, MMC_SEND_TUNING_BLOCK_HS200))
return 0;
DPRINTF("[gc] after tuning\n");
sdmmc_sd_clock_ctrl(sdmmc, 1);
return 1;
}
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