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https://github.com/brain-hackers/u-boot-brain
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33ace362fd
Some eMMC chips may need the RST_n_FUNCTION bit set to a non-zero value in order for warm reset of the system to work. Details on this being required will be part of the eMMC datasheet. Also add using this command to the dra7xx README. * Whitespace fix by panto Signed-off-by: Tom Rini <trini@ti.com> Acked-by: Pantelis Antoniou <panto@antoniou-consulting.com>
381 lines
12 KiB
C
381 lines
12 KiB
C
/*
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* Copyright 2008,2010 Freescale Semiconductor, Inc
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* Andy Fleming
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*
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* Based (loosely) on the Linux code
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#ifndef _MMC_H_
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#define _MMC_H_
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#include <linux/list.h>
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#include <linux/compiler.h>
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#define SD_VERSION_SD 0x20000
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#define SD_VERSION_3 (SD_VERSION_SD | 0x300)
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#define SD_VERSION_2 (SD_VERSION_SD | 0x200)
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#define SD_VERSION_1_0 (SD_VERSION_SD | 0x100)
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#define SD_VERSION_1_10 (SD_VERSION_SD | 0x10a)
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#define MMC_VERSION_MMC 0x10000
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#define MMC_VERSION_UNKNOWN (MMC_VERSION_MMC)
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#define MMC_VERSION_1_2 (MMC_VERSION_MMC | 0x102)
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#define MMC_VERSION_1_4 (MMC_VERSION_MMC | 0x104)
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#define MMC_VERSION_2_2 (MMC_VERSION_MMC | 0x202)
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#define MMC_VERSION_3 (MMC_VERSION_MMC | 0x300)
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#define MMC_VERSION_4 (MMC_VERSION_MMC | 0x400)
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#define MMC_VERSION_4_1 (MMC_VERSION_MMC | 0x401)
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#define MMC_VERSION_4_2 (MMC_VERSION_MMC | 0x402)
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#define MMC_VERSION_4_3 (MMC_VERSION_MMC | 0x403)
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#define MMC_VERSION_4_41 (MMC_VERSION_MMC | 0x429)
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#define MMC_VERSION_4_5 (MMC_VERSION_MMC | 0x405)
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#define MMC_MODE_HS 0x001
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#define MMC_MODE_HS_52MHz 0x010
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#define MMC_MODE_4BIT 0x100
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#define MMC_MODE_8BIT 0x200
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#define MMC_MODE_SPI 0x400
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#define MMC_MODE_HC 0x800
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#define MMC_MODE_MASK_WIDTH_BITS (MMC_MODE_4BIT | MMC_MODE_8BIT)
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#define MMC_MODE_WIDTH_BITS_SHIFT 8
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#define SD_DATA_4BIT 0x00040000
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#define IS_SD(x) (x->version & SD_VERSION_SD)
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#define MMC_DATA_READ 1
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#define MMC_DATA_WRITE 2
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#define NO_CARD_ERR -16 /* No SD/MMC card inserted */
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#define UNUSABLE_ERR -17 /* Unusable Card */
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#define COMM_ERR -18 /* Communications Error */
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#define TIMEOUT -19
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#define IN_PROGRESS -20 /* operation is in progress */
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#define MMC_CMD_GO_IDLE_STATE 0
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#define MMC_CMD_SEND_OP_COND 1
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#define MMC_CMD_ALL_SEND_CID 2
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#define MMC_CMD_SET_RELATIVE_ADDR 3
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#define MMC_CMD_SET_DSR 4
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#define MMC_CMD_SWITCH 6
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#define MMC_CMD_SELECT_CARD 7
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#define MMC_CMD_SEND_EXT_CSD 8
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#define MMC_CMD_SEND_CSD 9
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#define MMC_CMD_SEND_CID 10
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#define MMC_CMD_STOP_TRANSMISSION 12
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#define MMC_CMD_SEND_STATUS 13
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#define MMC_CMD_SET_BLOCKLEN 16
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#define MMC_CMD_READ_SINGLE_BLOCK 17
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#define MMC_CMD_READ_MULTIPLE_BLOCK 18
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#define MMC_CMD_WRITE_SINGLE_BLOCK 24
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#define MMC_CMD_WRITE_MULTIPLE_BLOCK 25
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#define MMC_CMD_ERASE_GROUP_START 35
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#define MMC_CMD_ERASE_GROUP_END 36
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#define MMC_CMD_ERASE 38
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#define MMC_CMD_APP_CMD 55
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#define MMC_CMD_SPI_READ_OCR 58
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#define MMC_CMD_SPI_CRC_ON_OFF 59
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#define MMC_CMD_RES_MAN 62
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#define MMC_CMD62_ARG1 0xefac62ec
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#define MMC_CMD62_ARG2 0xcbaea7
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#define SD_CMD_SEND_RELATIVE_ADDR 3
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#define SD_CMD_SWITCH_FUNC 6
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#define SD_CMD_SEND_IF_COND 8
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#define SD_CMD_APP_SET_BUS_WIDTH 6
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#define SD_CMD_ERASE_WR_BLK_START 32
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#define SD_CMD_ERASE_WR_BLK_END 33
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#define SD_CMD_APP_SEND_OP_COND 41
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#define SD_CMD_APP_SEND_SCR 51
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/* SCR definitions in different words */
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#define SD_HIGHSPEED_BUSY 0x00020000
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#define SD_HIGHSPEED_SUPPORTED 0x00020000
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#define MMC_HS_TIMING 0x00000100
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#define MMC_HS_52MHZ 0x2
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#define OCR_BUSY 0x80000000
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#define OCR_HCS 0x40000000
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#define OCR_VOLTAGE_MASK 0x007FFF80
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#define OCR_ACCESS_MODE 0x60000000
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#define SECURE_ERASE 0x80000000
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#define MMC_STATUS_MASK (~0x0206BF7F)
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#define MMC_STATUS_RDY_FOR_DATA (1 << 8)
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#define MMC_STATUS_CURR_STATE (0xf << 9)
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#define MMC_STATUS_ERROR (1 << 19)
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#define MMC_STATE_PRG (7 << 9)
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#define MMC_VDD_165_195 0x00000080 /* VDD voltage 1.65 - 1.95 */
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#define MMC_VDD_20_21 0x00000100 /* VDD voltage 2.0 ~ 2.1 */
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#define MMC_VDD_21_22 0x00000200 /* VDD voltage 2.1 ~ 2.2 */
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#define MMC_VDD_22_23 0x00000400 /* VDD voltage 2.2 ~ 2.3 */
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#define MMC_VDD_23_24 0x00000800 /* VDD voltage 2.3 ~ 2.4 */
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#define MMC_VDD_24_25 0x00001000 /* VDD voltage 2.4 ~ 2.5 */
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#define MMC_VDD_25_26 0x00002000 /* VDD voltage 2.5 ~ 2.6 */
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#define MMC_VDD_26_27 0x00004000 /* VDD voltage 2.6 ~ 2.7 */
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#define MMC_VDD_27_28 0x00008000 /* VDD voltage 2.7 ~ 2.8 */
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#define MMC_VDD_28_29 0x00010000 /* VDD voltage 2.8 ~ 2.9 */
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#define MMC_VDD_29_30 0x00020000 /* VDD voltage 2.9 ~ 3.0 */
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#define MMC_VDD_30_31 0x00040000 /* VDD voltage 3.0 ~ 3.1 */
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#define MMC_VDD_31_32 0x00080000 /* VDD voltage 3.1 ~ 3.2 */
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#define MMC_VDD_32_33 0x00100000 /* VDD voltage 3.2 ~ 3.3 */
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#define MMC_VDD_33_34 0x00200000 /* VDD voltage 3.3 ~ 3.4 */
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#define MMC_VDD_34_35 0x00400000 /* VDD voltage 3.4 ~ 3.5 */
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#define MMC_VDD_35_36 0x00800000 /* VDD voltage 3.5 ~ 3.6 */
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#define MMC_SWITCH_MODE_CMD_SET 0x00 /* Change the command set */
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#define MMC_SWITCH_MODE_SET_BITS 0x01 /* Set bits in EXT_CSD byte
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addressed by index which are
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1 in value field */
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#define MMC_SWITCH_MODE_CLEAR_BITS 0x02 /* Clear bits in EXT_CSD byte
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addressed by index, which are
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1 in value field */
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#define MMC_SWITCH_MODE_WRITE_BYTE 0x03 /* Set target byte to value */
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#define SD_SWITCH_CHECK 0
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#define SD_SWITCH_SWITCH 1
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/*
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* EXT_CSD fields
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*/
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#define EXT_CSD_GP_SIZE_MULT 143 /* R/W */
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#define EXT_CSD_PARTITIONS_ATTRIBUTE 156 /* R/W */
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#define EXT_CSD_PARTITIONING_SUPPORT 160 /* RO */
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#define EXT_CSD_RST_N_FUNCTION 162 /* R/W */
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#define EXT_CSD_RPMB_MULT 168 /* RO */
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#define EXT_CSD_ERASE_GROUP_DEF 175 /* R/W */
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#define EXT_CSD_BOOT_BUS_WIDTH 177
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#define EXT_CSD_PART_CONF 179 /* R/W */
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#define EXT_CSD_BUS_WIDTH 183 /* R/W */
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#define EXT_CSD_HS_TIMING 185 /* R/W */
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#define EXT_CSD_REV 192 /* RO */
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#define EXT_CSD_CARD_TYPE 196 /* RO */
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#define EXT_CSD_SEC_CNT 212 /* RO, 4 bytes */
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#define EXT_CSD_HC_WP_GRP_SIZE 221 /* RO */
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#define EXT_CSD_HC_ERASE_GRP_SIZE 224 /* RO */
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#define EXT_CSD_BOOT_MULT 226 /* RO */
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/*
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* EXT_CSD field definitions
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*/
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#define EXT_CSD_CMD_SET_NORMAL (1 << 0)
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#define EXT_CSD_CMD_SET_SECURE (1 << 1)
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#define EXT_CSD_CMD_SET_CPSECURE (1 << 2)
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#define EXT_CSD_CARD_TYPE_26 (1 << 0) /* Card can run at 26MHz */
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#define EXT_CSD_CARD_TYPE_52 (1 << 1) /* Card can run at 52MHz */
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#define EXT_CSD_BUS_WIDTH_1 0 /* Card is in 1 bit mode */
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#define EXT_CSD_BUS_WIDTH_4 1 /* Card is in 4 bit mode */
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#define EXT_CSD_BUS_WIDTH_8 2 /* Card is in 8 bit mode */
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#define EXT_CSD_BOOT_ACK_ENABLE (1 << 6)
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#define EXT_CSD_BOOT_PARTITION_ENABLE (1 << 3)
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#define EXT_CSD_PARTITION_ACCESS_ENABLE (1 << 0)
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#define EXT_CSD_PARTITION_ACCESS_DISABLE (0 << 0)
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#define EXT_CSD_BOOT_ACK(x) (x << 6)
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#define EXT_CSD_BOOT_PART_NUM(x) (x << 3)
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#define EXT_CSD_PARTITION_ACCESS(x) (x << 0)
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#define EXT_CSD_BOOT_BUS_WIDTH_MODE(x) (x << 3)
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#define EXT_CSD_BOOT_BUS_WIDTH_RESET(x) (x << 2)
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#define EXT_CSD_BOOT_BUS_WIDTH_WIDTH(x) (x)
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#define R1_ILLEGAL_COMMAND (1 << 22)
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#define R1_APP_CMD (1 << 5)
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#define MMC_RSP_PRESENT (1 << 0)
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#define MMC_RSP_136 (1 << 1) /* 136 bit response */
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#define MMC_RSP_CRC (1 << 2) /* expect valid crc */
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#define MMC_RSP_BUSY (1 << 3) /* card may send busy */
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#define MMC_RSP_OPCODE (1 << 4) /* response contains opcode */
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#define MMC_RSP_NONE (0)
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#define MMC_RSP_R1 (MMC_RSP_PRESENT|MMC_RSP_CRC|MMC_RSP_OPCODE)
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#define MMC_RSP_R1b (MMC_RSP_PRESENT|MMC_RSP_CRC|MMC_RSP_OPCODE| \
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MMC_RSP_BUSY)
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#define MMC_RSP_R2 (MMC_RSP_PRESENT|MMC_RSP_136|MMC_RSP_CRC)
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#define MMC_RSP_R3 (MMC_RSP_PRESENT)
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#define MMC_RSP_R4 (MMC_RSP_PRESENT)
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#define MMC_RSP_R5 (MMC_RSP_PRESENT|MMC_RSP_CRC|MMC_RSP_OPCODE)
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#define MMC_RSP_R6 (MMC_RSP_PRESENT|MMC_RSP_CRC|MMC_RSP_OPCODE)
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#define MMC_RSP_R7 (MMC_RSP_PRESENT|MMC_RSP_CRC|MMC_RSP_OPCODE)
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#define MMCPART_NOAVAILABLE (0xff)
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#define PART_ACCESS_MASK (0x7)
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#define PART_SUPPORT (0x1)
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#define PART_ENH_ATTRIB (0x1f)
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/* Maximum block size for MMC */
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#define MMC_MAX_BLOCK_LEN 512
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/* The number of MMC physical partitions. These consist of:
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* boot partitions (2), general purpose partitions (4) in MMC v4.4.
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*/
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#define MMC_NUM_BOOT_PARTITION 2
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struct mmc_cid {
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unsigned long psn;
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unsigned short oid;
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unsigned char mid;
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unsigned char prv;
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unsigned char mdt;
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char pnm[7];
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};
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struct mmc_cmd {
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ushort cmdidx;
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uint resp_type;
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uint cmdarg;
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uint response[4];
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};
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struct mmc_data {
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union {
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char *dest;
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const char *src; /* src buffers don't get written to */
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};
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uint flags;
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uint blocks;
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uint blocksize;
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};
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/* forward decl. */
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struct mmc;
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struct mmc_ops {
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int (*send_cmd)(struct mmc *mmc,
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struct mmc_cmd *cmd, struct mmc_data *data);
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void (*set_ios)(struct mmc *mmc);
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int (*init)(struct mmc *mmc);
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int (*getcd)(struct mmc *mmc);
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int (*getwp)(struct mmc *mmc);
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};
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struct mmc_config {
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const char *name;
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const struct mmc_ops *ops;
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uint host_caps;
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uint voltages;
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uint f_min;
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uint f_max;
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uint b_max;
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unsigned char part_type;
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};
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/* TODO struct mmc should be in mmc_private but it's hard to fix right now */
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struct mmc {
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struct list_head link;
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const struct mmc_config *cfg; /* provided configuration */
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uint version;
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void *priv;
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uint has_init;
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int high_capacity;
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uint bus_width;
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uint clock;
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uint card_caps;
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uint ocr;
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uint dsr;
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uint dsr_imp;
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uint scr[2];
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uint csd[4];
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uint cid[4];
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ushort rca;
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char part_config;
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char part_num;
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uint tran_speed;
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uint read_bl_len;
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uint write_bl_len;
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uint erase_grp_size;
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u64 capacity;
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u64 capacity_user;
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u64 capacity_boot;
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u64 capacity_rpmb;
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u64 capacity_gp[4];
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block_dev_desc_t block_dev;
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char op_cond_pending; /* 1 if we are waiting on an op_cond command */
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char init_in_progress; /* 1 if we have done mmc_start_init() */
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char preinit; /* start init as early as possible */
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uint op_cond_response; /* the response byte from the last op_cond */
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};
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int mmc_register(struct mmc *mmc);
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struct mmc *mmc_create(const struct mmc_config *cfg, void *priv);
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void mmc_destroy(struct mmc *mmc);
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int mmc_initialize(bd_t *bis);
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int mmc_init(struct mmc *mmc);
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int mmc_read(struct mmc *mmc, u64 src, uchar *dst, int size);
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void mmc_set_clock(struct mmc *mmc, uint clock);
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struct mmc *find_mmc_device(int dev_num);
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int mmc_set_dev(int dev_num);
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void print_mmc_devices(char separator);
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int get_mmc_num(void);
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int board_mmc_getcd(struct mmc *mmc);
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int mmc_switch_part(int dev_num, unsigned int part_num);
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int mmc_getcd(struct mmc *mmc);
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int mmc_getwp(struct mmc *mmc);
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int mmc_set_dsr(struct mmc *mmc, u16 val);
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/* Function to change the size of boot partition and rpmb partitions */
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int mmc_boot_partition_size_change(struct mmc *mmc, unsigned long bootsize,
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unsigned long rpmbsize);
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/* Function to modify the PARTITION_CONFIG field of EXT_CSD */
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int mmc_set_part_conf(struct mmc *mmc, u8 ack, u8 part_num, u8 access);
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/* Function to modify the BOOT_BUS_WIDTH field of EXT_CSD */
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int mmc_set_boot_bus_width(struct mmc *mmc, u8 width, u8 reset, u8 mode);
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/* Function to modify the RST_n_FUNCTION field of EXT_CSD */
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int mmc_set_rst_n_function(struct mmc *mmc, u8 enable);
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/**
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* Start device initialization and return immediately; it does not block on
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* polling OCR (operation condition register) status. Then you should call
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* mmc_init, which would block on polling OCR status and complete the device
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* initializatin.
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*
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* @param mmc Pointer to a MMC device struct
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* @return 0 on success, IN_PROGRESS on waiting for OCR status, <0 on error.
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*/
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int mmc_start_init(struct mmc *mmc);
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/**
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* Set preinit flag of mmc device.
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*
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* This will cause the device to be pre-inited during mmc_initialize(),
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* which may save boot time if the device is not accessed until later.
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* Some eMMC devices take 200-300ms to init, but unfortunately they
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* must be sent a series of commands to even get them to start preparing
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* for operation.
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*
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* @param mmc Pointer to a MMC device struct
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* @param preinit preinit flag value
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*/
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void mmc_set_preinit(struct mmc *mmc, int preinit);
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#ifdef CONFIG_GENERIC_MMC
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#ifdef CONFIG_MMC_SPI
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#define mmc_host_is_spi(mmc) ((mmc)->cfg->host_caps & MMC_MODE_SPI)
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#else
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#define mmc_host_is_spi(mmc) 0
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#endif
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struct mmc *mmc_spi_init(uint bus, uint cs, uint speed, uint mode);
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#else
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int mmc_legacy_init(int verbose);
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#endif
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/* Set block count limit because of 16 bit register limit on some hardware*/
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#ifndef CONFIG_SYS_MMC_MAX_BLK_COUNT
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#define CONFIG_SYS_MMC_MAX_BLK_COUNT 65535
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#endif
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#endif /* _MMC_H_ */
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