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/*
* Copyright (c) 2015-2020, Renesas Electronics Corporation. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#include <common/debug.h>
#include "emmc_config.h"
#include "emmc_def.h"
#include "emmc_hal.h"
#include "emmc_registers.h"
#include "emmc_std.h"
static const uint32_t cmd_reg_hw[EMMC_CMD_MAX + 1] = {
0x00000000, /* CMD0 */
0x00000701, /* CMD1 */
0x00000002, /* CMD2 */
0x00000003, /* CMD3 */
0x00000004, /* CMD4 */
0x00000505, /* CMD5 */
0x00000406, /* CMD6 */
0x00000007, /* CMD7 */
0x00001C08, /* CMD8 */
0x00000009, /* CMD9 */
0x0000000A, /* CMD10 */
0x00000000, /* reserved */
0x0000000C, /* CMD12 */
0x0000000D, /* CMD13 */
0x00001C0E, /* CMD14 */
0x0000000F, /* CMD15 */
0x00000010, /* CMD16 */
0x00000011, /* CMD17 */
0x00007C12, /* CMD18 */
0x00000C13, /* CMD19 */
0x00000000,
0x00001C15, /* CMD21 */
0x00000000,
0x00000017, /* CMD23 */
0x00000018, /* CMD24 */
0x00006C19, /* CMD25 */
0x00000C1A, /* CMD26 */
0x0000001B, /* CMD27 */
0x0000001C, /* CMD28 */
0x0000001D, /* CMD29 */
0x0000001E, /* CMD30 */
0x00001C1F, /* CMD31 */
0x00000000,
0x00000000,
0x00000000,
0x00000423, /* CMD35 */
0x00000424, /* CMD36 */
0x00000000,
0x00000026, /* CMD38 */
0x00000427, /* CMD39 */
0x00000428, /* CMD40(send cmd) */
0x00000000,
0x0000002A, /* CMD42 */
0x00000000,
0x00000000,
0x00000000,
0x00000000,
0x00000000,
0x00000000,
0x00000C31,
0x00000000,
0x00000000,
0x00000000,
0x00007C35,
0x00006C36,
0x00000037, /* CMD55 */
0x00000038, /* CMD56(Read) */
0x00000000,
0x00000000,
0x00000000,
0x00000000
};
uint32_t emmc_bit_field(uint8_t *data, uint32_t top, uint32_t bottom)
{
uint32_t value;
uint32_t index_top = (uint32_t) (15 - (top >> 3));
uint32_t index_bottom = (uint32_t) (15 - (bottom >> 3));
if (index_top == index_bottom) {
value = data[index_top];
} else if ((index_top + 1) == index_bottom) {
value =
(uint32_t) ((data[index_top] << 8) | data[index_bottom]);
} else if ((index_top + 2) == index_bottom) {
value =
(uint32_t) ((data[index_top] << 16) |
(data[index_top + 1] << 8) | data[index_top +
2]);
} else {
value =
(uint32_t) ((data[index_top] << 24) |
(data[index_top + 1] << 16) |
(data[index_top + 2] << 8) |
data[index_top + 3]);
}
value = ((value >> (bottom & 0x07)) & ((1 << (top - bottom + 1)) - 1));
return value;
}
void emmc_write_error_info(uint16_t func_no, EMMC_ERROR_CODE error_code)
{
mmc_drv_obj.error_info.num = func_no;
mmc_drv_obj.error_info.code = (uint16_t) error_code;
ERROR("BL2: emmc err:func_no=0x%x code=0x%x\n", func_no, error_code);
}
void emmc_write_error_info_func_no(uint16_t func_no)
{
mmc_drv_obj.error_info.num = func_no;
ERROR("BL2: emmc err:func_no=0x%x\n", func_no);
}
void emmc_make_nontrans_cmd(HAL_MEMCARD_COMMAND cmd, uint32_t arg)
{
/* command information */
mmc_drv_obj.cmd_info.cmd = cmd;
mmc_drv_obj.cmd_info.arg = arg;
mmc_drv_obj.cmd_info.dir = HAL_MEMCARD_READ;
mmc_drv_obj.cmd_info.hw =
cmd_reg_hw[cmd & HAL_MEMCARD_COMMAND_INDEX_MASK];
/* clear data transfer information */
mmc_drv_obj.trans_size = 0;
mmc_drv_obj.remain_size = 0;
mmc_drv_obj.buff_address_virtual = NULL;
mmc_drv_obj.buff_address_physical = NULL;
/* response information */
mmc_drv_obj.response_length = 6;
switch (mmc_drv_obj.cmd_info.cmd & HAL_MEMCARD_RESPONSE_TYPE_MASK) {
case HAL_MEMCARD_RESPONSE_NONE:
mmc_drv_obj.response = (uint32_t *) mmc_drv_obj.response_data;
mmc_drv_obj.response_length = 0;
break;
case HAL_MEMCARD_RESPONSE_R1:
mmc_drv_obj.response = &mmc_drv_obj.r1_card_status;
break;
case HAL_MEMCARD_RESPONSE_R1b:
mmc_drv_obj.cmd_info.hw |= BIT10; /* bit10 = R1 busy bit */
mmc_drv_obj.response = &mmc_drv_obj.r1_card_status;
break;
case HAL_MEMCARD_RESPONSE_R2:
mmc_drv_obj.response = (uint32_t *) mmc_drv_obj.response_data;
mmc_drv_obj.response_length = 17;
break;
case HAL_MEMCARD_RESPONSE_R3:
mmc_drv_obj.response = &mmc_drv_obj.r3_ocr;
break;
case HAL_MEMCARD_RESPONSE_R4:
mmc_drv_obj.response = &mmc_drv_obj.r4_resp;
break;
case HAL_MEMCARD_RESPONSE_R5:
mmc_drv_obj.response = &mmc_drv_obj.r5_resp;
break;
default:
mmc_drv_obj.response = (uint32_t *) mmc_drv_obj.response_data;
break;
}
}
void emmc_make_trans_cmd(HAL_MEMCARD_COMMAND cmd, uint32_t arg,
uint32_t *buff_address_virtual,
uint32_t len,
HAL_MEMCARD_OPERATION dir,
HAL_MEMCARD_DATA_TRANSFER_MODE transfer_mode)
{
emmc_make_nontrans_cmd(cmd, arg); /* update common information */
/* for data transfer command */
mmc_drv_obj.cmd_info.dir = dir;
mmc_drv_obj.buff_address_virtual = buff_address_virtual;
mmc_drv_obj.buff_address_physical = buff_address_virtual;
mmc_drv_obj.trans_size = len;
mmc_drv_obj.remain_size = len;
mmc_drv_obj.transfer_mode = transfer_mode;
}
EMMC_ERROR_CODE emmc_send_idle_cmd(uint32_t arg)
{
EMMC_ERROR_CODE result;
uint32_t freq;
/* initialize state */
mmc_drv_obj.mount = FALSE;
mmc_drv_obj.selected = FALSE;
mmc_drv_obj.during_transfer = FALSE;
mmc_drv_obj.during_cmd_processing = FALSE;
mmc_drv_obj.during_dma_transfer = FALSE;
mmc_drv_obj.dma_error_flag = FALSE;
mmc_drv_obj.force_terminate = FALSE;
mmc_drv_obj.state_machine_blocking = FALSE;
mmc_drv_obj.bus_width = HAL_MEMCARD_DATA_WIDTH_1_BIT;
mmc_drv_obj.max_freq = MMC_20MHZ; /* 20MHz */
mmc_drv_obj.current_state = EMMC_R1_STATE_IDLE;
/* CMD0 (MMC clock is current frequency. if Data transfer mode, 20MHz or higher.) */
emmc_make_nontrans_cmd(CMD0_GO_IDLE_STATE, arg); /* CMD0 */
result = emmc_exec_cmd(EMMC_R1_ERROR_MASK, mmc_drv_obj.response);
if (result != EMMC_SUCCESS) {
return result;
}
/* change MMC clock(400KHz) */
freq = MMC_400KHZ;
result = emmc_set_request_mmc_clock(&freq);
if (result != EMMC_SUCCESS) {
return result;
}
return EMMC_SUCCESS;
}
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