rcar_gen3: drivers: emmc
Signed-off-by: ldts <jramirez@baylibre.com>
diff --git a/drivers/renesas/rcar/emmc/emmc_utility.c b/drivers/renesas/rcar/emmc/emmc_utility.c
new file mode 100644
index 0000000..e64947d
--- /dev/null
+++ b/drivers/renesas/rcar/emmc/emmc_utility.c
@@ -0,0 +1,225 @@
+/*
+ * Copyright (c) 2015-2017, Renesas Electronics Corporation. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <debug.h>
+#include "emmc_config.h"
+#include "emmc_hal.h"
+#include "emmc_std.h"
+#include "emmc_registers.h"
+#include "emmc_def.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;
+}