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Commit 41583c57 authored by Haojian Zhuang's avatar Haojian Zhuang
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drivers/emmc: remove emmc framework 



Replace emmc framework by mmc framework.
Signed-off-by: default avatarHaojian Zhuang <haojian.zhuang@linaro.org>
parent eba1b6b3
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drivers/emmc/emmc.c deleted 100644 → 0
View file @ eba1b6b3
/*
* Copyright (c) 2016-2018, ARM Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*
* Defines a simple and generic interface to access eMMC device.
*/
#include <arch_helpers.h>
#include <assert.h>
#include <debug.h>
#include <emmc.h>
#include <errno.h>
#include <string.h>
#include <utils.h>
static const emmc_ops_t *ops;
static unsigned int emmc_ocr_value;
static emmc_csd_t emmc_csd;
static unsigned int emmc_flags;
static int is_cmd23_enabled(void)
{
return (!!(emmc_flags & EMMC_FLAG_CMD23));
}
static int emmc_device_state(void)
{
emmc_cmd_t cmd;
int ret;
do {
zeromem(&cmd, sizeof(emmc_cmd_t));
cmd.cmd_idx = EMMC_CMD13;
cmd.cmd_arg = EMMC_FIX_RCA << RCA_SHIFT_OFFSET;
cmd.resp_type = EMMC_RESPONSE_R1;
ret = ops->send_cmd(&cmd);
assert(ret == 0);
assert((cmd.resp_data[0] & STATUS_SWITCH_ERROR) == 0);
/* Ignore improbable errors in release builds */
(void)ret;
} while ((cmd.resp_data[0] & STATUS_READY_FOR_DATA) == 0);
return EMMC_GET_STATE(cmd.resp_data[0]);
}
static void emmc_set_ext_csd(unsigned int ext_cmd, unsigned int value)
{
emmc_cmd_t cmd;
int ret, state;
zeromem(&cmd, sizeof(emmc_cmd_t));
cmd.cmd_idx = EMMC_CMD6;
cmd.cmd_arg = EXTCSD_WRITE_BYTES | EXTCSD_CMD(ext_cmd) |
EXTCSD_VALUE(value) | 1;
ret = ops->send_cmd(&cmd);
assert(ret == 0);
/* wait to exit PRG state */
do {
state = emmc_device_state();
} while (state == EMMC_STATE_PRG);
/* Ignore improbable errors in release builds */
(void)ret;
}
static void emmc_set_ios(int clk, int bus_width)
{
int ret;
/* set IO speed & IO bus width */
if (emmc_csd.spec_vers == 4)
emmc_set_ext_csd(CMD_EXTCSD_BUS_WIDTH, bus_width);
ret = ops->set_ios(clk, bus_width);
assert(ret == 0);
/* Ignore improbable errors in release builds */
(void)ret;
}
static int emmc_enumerate(int clk, int bus_width)
{
emmc_cmd_t cmd;
int ret, state;
ops->init();
/* CMD0: reset to IDLE */
zeromem(&cmd, sizeof(emmc_cmd_t));
cmd.cmd_idx = EMMC_CMD0;
ret = ops->send_cmd(&cmd);
assert(ret == 0);
while (1) {
/* CMD1: get OCR register */
zeromem(&cmd, sizeof(emmc_cmd_t));
cmd.cmd_idx = EMMC_CMD1;
cmd.cmd_arg = OCR_SECTOR_MODE | OCR_VDD_MIN_2V7 |
OCR_VDD_MIN_1V7;
cmd.resp_type = EMMC_RESPONSE_R3;
ret = ops->send_cmd(&cmd);
assert(ret == 0);
emmc_ocr_value = cmd.resp_data[0];
if (emmc_ocr_value & OCR_POWERUP)
break;
}
/* CMD2: Card Identification */
zeromem(&cmd, sizeof(emmc_cmd_t));
cmd.cmd_idx = EMMC_CMD2;
cmd.resp_type = EMMC_RESPONSE_R2;
ret = ops->send_cmd(&cmd);
assert(ret == 0);
/* CMD3: Set Relative Address */
zeromem(&cmd, sizeof(emmc_cmd_t));
cmd.cmd_idx = EMMC_CMD3;
cmd.cmd_arg = EMMC_FIX_RCA << RCA_SHIFT_OFFSET;
cmd.resp_type = EMMC_RESPONSE_R1;
ret = ops->send_cmd(&cmd);
assert(ret == 0);
/* CMD9: CSD Register */
zeromem(&cmd, sizeof(emmc_cmd_t));
cmd.cmd_idx = EMMC_CMD9;
cmd.cmd_arg = EMMC_FIX_RCA << RCA_SHIFT_OFFSET;
cmd.resp_type = EMMC_RESPONSE_R2;
ret = ops->send_cmd(&cmd);
assert(ret == 0);
memcpy(&emmc_csd, &cmd.resp_data, sizeof(cmd.resp_data));
/* CMD7: Select Card */
zeromem(&cmd, sizeof(emmc_cmd_t));
cmd.cmd_idx = EMMC_CMD7;
cmd.cmd_arg = EMMC_FIX_RCA << RCA_SHIFT_OFFSET;
cmd.resp_type = EMMC_RESPONSE_R1;
ret = ops->send_cmd(&cmd);
assert(ret == 0);
/* wait to TRAN state */
do {
state = emmc_device_state();
} while (state != EMMC_STATE_TRAN);
emmc_set_ios(clk, bus_width);
return ret;
}
size_t emmc_read_blocks(int lba, uintptr_t buf, size_t size)
{
emmc_cmd_t cmd;
int ret;
assert((ops != 0) &&
(ops->read != 0) &&
((buf & EMMC_BLOCK_MASK) == 0) &&
((size & EMMC_BLOCK_MASK) == 0));
inv_dcache_range(buf, size);
ret = ops->prepare(lba, buf, size);
assert(ret == 0);
if (is_cmd23_enabled()) {
zeromem(&cmd, sizeof(emmc_cmd_t));
/* set block count */
cmd.cmd_idx = EMMC_CMD23;
cmd.cmd_arg = size / EMMC_BLOCK_SIZE;
cmd.resp_type = EMMC_RESPONSE_R1;
ret = ops->send_cmd(&cmd);
assert(ret == 0);
zeromem(&cmd, sizeof(emmc_cmd_t));
cmd.cmd_idx = EMMC_CMD18;
} else {
if (size > EMMC_BLOCK_SIZE)
cmd.cmd_idx = EMMC_CMD18;
else
cmd.cmd_idx = EMMC_CMD17;
}
if ((emmc_ocr_value & OCR_ACCESS_MODE_MASK) == OCR_BYTE_MODE)
cmd.cmd_arg = lba * EMMC_BLOCK_SIZE;
else
cmd.cmd_arg = lba;
cmd.resp_type = EMMC_RESPONSE_R1;
ret = ops->send_cmd(&cmd);
assert(ret == 0);
ret = ops->read(lba, buf, size);
assert(ret == 0);
/* wait buffer empty */
emmc_device_state();
if (is_cmd23_enabled() == 0) {
if (size > EMMC_BLOCK_SIZE) {
zeromem(&cmd, sizeof(emmc_cmd_t));
cmd.cmd_idx = EMMC_CMD12;
ret = ops->send_cmd(&cmd);
assert(ret == 0);
}
}
/* Ignore improbable errors in release builds */
(void)ret;
return size;
}
size_t emmc_write_blocks(int lba, const uintptr_t buf, size_t size)
{
emmc_cmd_t cmd;
int ret;
assert((ops != 0) &&
(ops->write != 0) &&
((buf & EMMC_BLOCK_MASK) == 0) &&
((size & EMMC_BLOCK_MASK) == 0));
clean_dcache_range(buf, size);
ret = ops->prepare(lba, buf, size);
assert(ret == 0);
if (is_cmd23_enabled()) {
/* set block count */
zeromem(&cmd, sizeof(emmc_cmd_t));
cmd.cmd_idx = EMMC_CMD23;
cmd.cmd_arg = size / EMMC_BLOCK_SIZE;
cmd.resp_type = EMMC_RESPONSE_R1;
ret = ops->send_cmd(&cmd);
assert(ret == 0);
zeromem(&cmd, sizeof(emmc_cmd_t));
cmd.cmd_idx = EMMC_CMD25;
} else {
zeromem(&cmd, sizeof(emmc_cmd_t));
if (size > EMMC_BLOCK_SIZE)
cmd.cmd_idx = EMMC_CMD25;
else
cmd.cmd_idx = EMMC_CMD24;
}
if ((emmc_ocr_value & OCR_ACCESS_MODE_MASK) == OCR_BYTE_MODE)
cmd.cmd_arg = lba * EMMC_BLOCK_SIZE;
else
cmd.cmd_arg = lba;
cmd.resp_type = EMMC_RESPONSE_R1;
ret = ops->send_cmd(&cmd);
assert(ret == 0);
ret = ops->write(lba, buf, size);
assert(ret == 0);
/* wait buffer empty */
emmc_device_state();
if (is_cmd23_enabled() == 0) {
if (size > EMMC_BLOCK_SIZE) {
zeromem(&cmd, sizeof(emmc_cmd_t));
cmd.cmd_idx = EMMC_CMD12;
ret = ops->send_cmd(&cmd);
assert(ret == 0);
}
}
/* Ignore improbable errors in release builds */
(void)ret;
return size;
}
size_t emmc_erase_blocks(int lba, size_t size)
{
emmc_cmd_t cmd;
int ret, state;
assert(ops != 0);
assert((size != 0) && ((size % EMMC_BLOCK_SIZE) == 0));
zeromem(&cmd, sizeof(emmc_cmd_t));
cmd.cmd_idx = EMMC_CMD35;
cmd.cmd_arg = lba;
cmd.resp_type = EMMC_RESPONSE_R1;
ret = ops->send_cmd(&cmd);
assert(ret == 0);
zeromem(&cmd, sizeof(emmc_cmd_t));
cmd.cmd_idx = EMMC_CMD36;
cmd.cmd_arg = lba + (size / EMMC_BLOCK_SIZE) - 1;
cmd.resp_type = EMMC_RESPONSE_R1;
ret = ops->send_cmd(&cmd);
assert(ret == 0);
zeromem(&cmd, sizeof(emmc_cmd_t));
cmd.cmd_idx = EMMC_CMD38;
cmd.resp_type = EMMC_RESPONSE_R1B;
ret = ops->send_cmd(&cmd);
assert(ret == 0);
/* wait to TRAN state */
do {
state = emmc_device_state();
} while (state != EMMC_STATE_TRAN);
/* Ignore improbable errors in release builds */
(void)ret;
return size;
}
static inline void emmc_rpmb_enable(void)
{
emmc_set_ext_csd(CMD_EXTCSD_PARTITION_CONFIG,
PART_CFG_BOOT_PARTITION1_ENABLE |
PART_CFG_PARTITION1_ACCESS);
}
static inline void emmc_rpmb_disable(void)
{
emmc_set_ext_csd(CMD_EXTCSD_PARTITION_CONFIG,
PART_CFG_BOOT_PARTITION1_ENABLE);
}
size_t emmc_rpmb_read_blocks(int lba, uintptr_t buf, size_t size)
{
size_t size_read;
emmc_rpmb_enable();
size_read = emmc_read_blocks(lba, buf, size);
emmc_rpmb_disable();
return size_read;
}
size_t emmc_rpmb_write_blocks(int lba, const uintptr_t buf, size_t size)
{
size_t size_written;
emmc_rpmb_enable();
size_written = emmc_write_blocks(lba, buf, size);
emmc_rpmb_disable();
return size_written;
}
size_t emmc_rpmb_erase_blocks(int lba, size_t size)
{
size_t size_erased;
emmc_rpmb_enable();
size_erased = emmc_erase_blocks(lba, size);
emmc_rpmb_disable();
return size_erased;
}
void emmc_init(const emmc_ops_t *ops_ptr, int clk, int width,
unsigned int flags)
{
assert((ops_ptr != 0) &&
(ops_ptr->init != 0) &&
(ops_ptr->send_cmd != 0) &&
(ops_ptr->set_ios != 0) &&
(ops_ptr->prepare != 0) &&
(ops_ptr->read != 0) &&
(ops_ptr->write != 0) &&
(clk != 0) &&
((width == EMMC_BUS_WIDTH_1) ||
(width == EMMC_BUS_WIDTH_4) ||
(width == EMMC_BUS_WIDTH_8) ||
(width == EMMC_BUS_WIDTH_DDR_4) ||
(width == EMMC_BUS_WIDTH_DDR_8)));
ops = ops_ptr;
emmc_flags = flags;
emmc_enumerate(clk, width);
}
include/drivers/emmc.h deleted 100644 → 0
View file @ eba1b6b3
/*
* Copyright (c) 2016-2018, ARM Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#ifndef __EMMC_H__
#define __EMMC_H__
#include <stdint.h>
#define EMMC_BLOCK_SIZE 512
#define EMMC_BLOCK_MASK (EMMC_BLOCK_SIZE - 1)
#define EMMC_BOOT_CLK_RATE (400 * 1000)
#define EMMC_CMD0 0
#define EMMC_CMD1 1
#define EMMC_CMD2 2
#define EMMC_CMD3 3
#define EMMC_CMD6 6
#define EMMC_CMD7 7
#define EMMC_CMD8 8
#define EMMC_CMD9 9
#define EMMC_CMD12 12
#define EMMC_CMD13 13
#define EMMC_CMD17 17
#define EMMC_CMD18 18
#define EMMC_CMD21 21
#define EMMC_CMD23 23
#define EMMC_CMD24 24
#define EMMC_CMD25 25
#define EMMC_CMD35 35
#define EMMC_CMD36 36
#define EMMC_CMD38 38
#define OCR_POWERUP (1 << 31)
#define OCR_BYTE_MODE (0 << 29)
#define OCR_SECTOR_MODE (2 << 29)
#define OCR_ACCESS_MODE_MASK (3 << 29)
#define OCR_VDD_MIN_2V7 (0x1ff << 15)
#define OCR_VDD_MIN_2V0 (0x7f << 8)
#define OCR_VDD_MIN_1V7 (1 << 7)
#define EMMC_RESPONSE_R1 1
#define EMMC_RESPONSE_R1B 1
#define EMMC_RESPONSE_R2 4
#define EMMC_RESPONSE_R3 1
#define EMMC_RESPONSE_R4 1
#define EMMC_RESPONSE_R5 1
#define EMMC_FIX_RCA 6 /* > 1 */
#define RCA_SHIFT_OFFSET 16
#define CMD_EXTCSD_PARTITION_CONFIG 179
#define CMD_EXTCSD_BUS_WIDTH 183
#define CMD_EXTCSD_HS_TIMING 185
#define PART_CFG_BOOT_PARTITION1_ENABLE (1 << 3)
#define PART_CFG_PARTITION1_ACCESS (1 << 0)
/* values in EXT CSD register */
#define EMMC_BUS_WIDTH_1 0
#define EMMC_BUS_WIDTH_4 1
#define EMMC_BUS_WIDTH_8 2
#define EMMC_BUS_WIDTH_DDR_4 5
#define EMMC_BUS_WIDTH_DDR_8 6
#define EMMC_BOOT_MODE_BACKWARD (0 << 3)
#define EMMC_BOOT_MODE_HS_TIMING (1 << 3)
#define EMMC_BOOT_MODE_DDR (2 << 3)
#define EXTCSD_SET_CMD (0 << 24)
#define EXTCSD_SET_BITS (1 << 24)
#define EXTCSD_CLR_BITS (2 << 24)
#define EXTCSD_WRITE_BYTES (3 << 24)
#define EXTCSD_CMD(x) (((x) & 0xff) << 16)
#define EXTCSD_VALUE(x) (((x) & 0xff) << 8)
#define STATUS_CURRENT_STATE(x) (((x) & 0xf) << 9)
#define STATUS_READY_FOR_DATA (1 << 8)
#define STATUS_SWITCH_ERROR (1 << 7)
#define EMMC_GET_STATE(x) (((x) >> 9) & 0xf)
#define EMMC_STATE_IDLE 0
#define EMMC_STATE_READY 1
#define EMMC_STATE_IDENT 2
#define EMMC_STATE_STBY 3
#define EMMC_STATE_TRAN 4
#define EMMC_STATE_DATA 5
#define EMMC_STATE_RCV 6
#define EMMC_STATE_PRG 7
#define EMMC_STATE_DIS 8
#define EMMC_STATE_BTST 9
#define EMMC_STATE_SLP 10
#define EMMC_FLAG_CMD23 (1 << 0)
typedef struct emmc_cmd {
unsigned int cmd_idx;
unsigned int cmd_arg;
unsigned int resp_type;
unsigned int resp_data[4];
} emmc_cmd_t;
typedef struct emmc_ops {
void (*init)(void);
int (*send_cmd)(emmc_cmd_t *cmd);
int (*set_ios)(int clk, int width);
int (*prepare)(int lba, uintptr_t buf, size_t size);
int (*read)(int lba, uintptr_t buf, size_t size);
int (*write)(int lba, const uintptr_t buf, size_t size);
} emmc_ops_t;
typedef struct emmc_csd {
unsigned int not_used: 1;
unsigned int crc: 7;
unsigned int ecc: 2;
unsigned int file_format: 2;
unsigned int tmp_write_protect: 1;
unsigned int perm_write_protect: 1;
unsigned int copy: 1;
unsigned int file_format_grp: 1;
unsigned int reserved_1: 5;
unsigned int write_bl_partial: 1;
unsigned int write_bl_len: 4;
unsigned int r2w_factor: 3;
unsigned int default_ecc: 2;
unsigned int wp_grp_enable: 1;
unsigned int wp_grp_size: 5;
unsigned int erase_grp_mult: 5;
unsigned int erase_grp_size: 5;
unsigned int c_size_mult: 3;
unsigned int vdd_w_curr_max: 3;
unsigned int vdd_w_curr_min: 3;
unsigned int vdd_r_curr_max: 3;
unsigned int vdd_r_curr_min: 3;
unsigned int c_size_low: 2;
unsigned int c_size_high: 10;
unsigned int reserved_2: 2;
unsigned int dsr_imp: 1;
unsigned int read_blk_misalign: 1;
unsigned int write_blk_misalign: 1;
unsigned int read_bl_partial: 1;
unsigned int read_bl_len: 4;
unsigned int ccc: 12;
unsigned int tran_speed: 8;
unsigned int nsac: 8;
unsigned int taac: 8;
unsigned int reserved_3: 2;
unsigned int spec_vers: 4;
unsigned int csd_structure: 2;
} emmc_csd_t;
size_t emmc_read_blocks(int lba, uintptr_t buf, size_t size);
size_t emmc_write_blocks(int lba, const uintptr_t buf, size_t size);
size_t emmc_erase_blocks(int lba, size_t size);
size_t emmc_rpmb_read_blocks(int lba, uintptr_t buf, size_t size);
size_t emmc_rpmb_write_blocks(int lba, const uintptr_t buf, size_t size);
size_t emmc_rpmb_erase_blocks(int lba, size_t size);
void emmc_init(const emmc_ops_t *ops, int clk, int bus_width,
unsigned int flags);
#endif /* __EMMC_H__ */
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