u-boot/common/cmd_mmc.c
Amar 2a91c91346 COMMON: MMC: Command to support EMMC booting and to resize EMMC boot partition
This patch adds commands to access(open/close) and resize boot partitions on EMMC.

Signed-off-by: Amar <amarendra.xt@samsung.com>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
2013-06-13 17:35:14 +09:00

443 lines
10 KiB
C

/*
* (C) Copyright 2003
* Kyle Harris, kharris@nexus-tech.net
*
* See file CREDITS for list of people who contributed to this
* project.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that 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, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
#include <common.h>
#include <command.h>
#include <mmc.h>
static int curr_device = -1;
#ifndef CONFIG_GENERIC_MMC
int do_mmc (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
int dev;
if (argc < 2)
return CMD_RET_USAGE;
if (strcmp(argv[1], "init") == 0) {
if (argc == 2) {
if (curr_device < 0)
dev = 1;
else
dev = curr_device;
} else if (argc == 3) {
dev = (int)simple_strtoul(argv[2], NULL, 10);
} else {
return CMD_RET_USAGE;
}
if (mmc_legacy_init(dev) != 0) {
puts("No MMC card found\n");
return 1;
}
curr_device = dev;
printf("mmc%d is available\n", curr_device);
} else if (strcmp(argv[1], "device") == 0) {
if (argc == 2) {
if (curr_device < 0) {
puts("No MMC device available\n");
return 1;
}
} else if (argc == 3) {
dev = (int)simple_strtoul(argv[2], NULL, 10);
#ifdef CONFIG_SYS_MMC_SET_DEV
if (mmc_set_dev(dev) != 0)
return 1;
#endif
curr_device = dev;
} else {
return CMD_RET_USAGE;
}
printf("mmc%d is current device\n", curr_device);
} else {
return CMD_RET_USAGE;
}
return 0;
}
U_BOOT_CMD(
mmc, 3, 1, do_mmc,
"MMC sub-system",
"init [dev] - init MMC sub system\n"
"mmc device [dev] - show or set current device"
);
#else /* !CONFIG_GENERIC_MMC */
enum mmc_state {
MMC_INVALID,
MMC_READ,
MMC_WRITE,
MMC_ERASE,
};
static void print_mmcinfo(struct mmc *mmc)
{
printf("Device: %s\n", mmc->name);
printf("Manufacturer ID: %x\n", mmc->cid[0] >> 24);
printf("OEM: %x\n", (mmc->cid[0] >> 8) & 0xffff);
printf("Name: %c%c%c%c%c \n", mmc->cid[0] & 0xff,
(mmc->cid[1] >> 24), (mmc->cid[1] >> 16) & 0xff,
(mmc->cid[1] >> 8) & 0xff, mmc->cid[1] & 0xff);
printf("Tran Speed: %d\n", mmc->tran_speed);
printf("Rd Block Len: %d\n", mmc->read_bl_len);
printf("%s version %d.%d\n", IS_SD(mmc) ? "SD" : "MMC",
(mmc->version >> 8) & 0xf, mmc->version & 0xff);
printf("High Capacity: %s\n", mmc->high_capacity ? "Yes" : "No");
puts("Capacity: ");
print_size(mmc->capacity, "\n");
printf("Bus Width: %d-bit\n", mmc->bus_width);
}
static int do_mmcinfo(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
struct mmc *mmc;
if (curr_device < 0) {
if (get_mmc_num() > 0)
curr_device = 0;
else {
puts("No MMC device available\n");
return 1;
}
}
mmc = find_mmc_device(curr_device);
if (mmc) {
mmc_init(mmc);
print_mmcinfo(mmc);
return 0;
} else {
printf("no mmc device at slot %x\n", curr_device);
return 1;
}
}
U_BOOT_CMD(
mmcinfo, 1, 0, do_mmcinfo,
"display MMC info",
"- display info of the current MMC device"
);
#ifdef CONFIG_SUPPORT_EMMC_BOOT
static int boot_part_access(struct mmc *mmc, u8 ack, u8 part_num, u8 access)
{
int err;
err = mmc_boot_part_access(mmc, ack, part_num, access);
if ((err == 0) && (access != 0)) {
printf("\t\t\t!!!Notice!!!\n");
printf("!You must close EMMC boot Partition");
printf("after all images are written\n");
printf("!EMMC boot partition has continuity");
printf("at image writing time.\n");
printf("!So, do not close the boot partition");
printf("before all images are written.\n");
return 0;
} else if ((err == 0) && (access == 0))
return 0;
else if ((err != 0) && (access != 0)) {
printf("EMMC boot partition-%d OPEN Failed.\n", part_num);
return 1;
} else {
printf("EMMC boot partition-%d CLOSE Failed.\n", part_num);
return 1;
}
}
#endif
static int do_mmcops(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
enum mmc_state state;
if (argc < 2)
return CMD_RET_USAGE;
if (curr_device < 0) {
if (get_mmc_num() > 0)
curr_device = 0;
else {
puts("No MMC device available\n");
return 1;
}
}
if (strcmp(argv[1], "rescan") == 0) {
struct mmc *mmc;
if (argc != 2)
return CMD_RET_USAGE;
mmc = find_mmc_device(curr_device);
if (!mmc) {
printf("no mmc device at slot %x\n", curr_device);
return 1;
}
mmc->has_init = 0;
if (mmc_init(mmc))
return 1;
else
return 0;
} else if (strncmp(argv[1], "part", 4) == 0) {
block_dev_desc_t *mmc_dev;
struct mmc *mmc;
if (argc != 2)
return CMD_RET_USAGE;
mmc = find_mmc_device(curr_device);
if (!mmc) {
printf("no mmc device at slot %x\n", curr_device);
return 1;
}
mmc_init(mmc);
mmc_dev = mmc_get_dev(curr_device);
if (mmc_dev != NULL &&
mmc_dev->type != DEV_TYPE_UNKNOWN) {
print_part(mmc_dev);
return 0;
}
puts("get mmc type error!\n");
return 1;
} else if (strcmp(argv[1], "list") == 0) {
if (argc != 2)
return CMD_RET_USAGE;
print_mmc_devices('\n');
return 0;
} else if (strcmp(argv[1], "dev") == 0) {
int dev, part = -1;
struct mmc *mmc;
if (argc == 2)
dev = curr_device;
else if (argc == 3)
dev = simple_strtoul(argv[2], NULL, 10);
else if (argc == 4) {
dev = (int)simple_strtoul(argv[2], NULL, 10);
part = (int)simple_strtoul(argv[3], NULL, 10);
if (part > PART_ACCESS_MASK) {
printf("#part_num shouldn't be larger"
" than %d\n", PART_ACCESS_MASK);
return 1;
}
} else
return CMD_RET_USAGE;
mmc = find_mmc_device(dev);
if (!mmc) {
printf("no mmc device at slot %x\n", dev);
return 1;
}
mmc_init(mmc);
if (part != -1) {
int ret;
if (mmc->part_config == MMCPART_NOAVAILABLE) {
printf("Card doesn't support part_switch\n");
return 1;
}
if (part != mmc->part_num) {
ret = mmc_switch_part(dev, part);
if (!ret)
mmc->part_num = part;
printf("switch to partions #%d, %s\n",
part, (!ret) ? "OK" : "ERROR");
}
}
curr_device = dev;
if (mmc->part_config == MMCPART_NOAVAILABLE)
printf("mmc%d is current device\n", curr_device);
else
printf("mmc%d(part %d) is current device\n",
curr_device, mmc->part_num);
return 0;
#ifdef CONFIG_SUPPORT_EMMC_BOOT
} else if ((strcmp(argv[1], "open") == 0) ||
(strcmp(argv[1], "close") == 0)) {
int dev;
struct mmc *mmc;
u8 part_num, access = 0;
if (argc == 4) {
dev = simple_strtoul(argv[2], NULL, 10);
part_num = simple_strtoul(argv[3], NULL, 10);
} else {
return CMD_RET_USAGE;
}
mmc = find_mmc_device(dev);
if (!mmc) {
printf("no mmc device at slot %x\n", dev);
return 1;
}
if (IS_SD(mmc)) {
printf("SD device cannot be opened/closed\n");
return 1;
}
if ((part_num <= 0) || (part_num > MMC_NUM_BOOT_PARTITION)) {
printf("Invalid boot partition number:\n");
printf("Boot partition number cannot be <= 0\n");
printf("EMMC44 supports only 2 boot partitions\n");
return 1;
}
if (strcmp(argv[1], "open") == 0)
access = part_num; /* enable R/W access to boot part*/
else
access = 0; /* No access to boot partition */
/* acknowledge to be sent during boot operation */
return boot_part_access(mmc, 1, part_num, access);
} else if (strcmp(argv[1], "bootpart") == 0) {
int dev;
dev = simple_strtoul(argv[2], NULL, 10);
u32 bootsize = simple_strtoul(argv[3], NULL, 10);
u32 rpmbsize = simple_strtoul(argv[4], NULL, 10);
struct mmc *mmc = find_mmc_device(dev);
if (!mmc) {
printf("no mmc device at slot %x\n", dev);
return 1;
}
if (IS_SD(mmc)) {
printf("It is not a EMMC device\n");
return 1;
}
if (0 == mmc_boot_partition_size_change(mmc,
bootsize, rpmbsize)) {
printf("EMMC boot partition Size %d MB\n", bootsize);
printf("EMMC RPMB partition Size %d MB\n", rpmbsize);
return 0;
} else {
printf("EMMC boot partition Size change Failed.\n");
return 1;
}
#endif /* CONFIG_SUPPORT_EMMC_BOOT */
}
state = MMC_INVALID;
if (argc == 5 && strcmp(argv[1], "read") == 0)
state = MMC_READ;
else if (argc == 5 && strcmp(argv[1], "write") == 0)
state = MMC_WRITE;
else if (argc == 4 && strcmp(argv[1], "erase") == 0)
state = MMC_ERASE;
if (state != MMC_INVALID) {
struct mmc *mmc = find_mmc_device(curr_device);
int idx = 2;
u32 blk, cnt, n;
void *addr;
if (state != MMC_ERASE) {
addr = (void *)simple_strtoul(argv[idx], NULL, 16);
++idx;
} else
addr = NULL;
blk = simple_strtoul(argv[idx], NULL, 16);
cnt = simple_strtoul(argv[idx + 1], NULL, 16);
if (!mmc) {
printf("no mmc device at slot %x\n", curr_device);
return 1;
}
printf("\nMMC %s: dev # %d, block # %d, count %d ... ",
argv[1], curr_device, blk, cnt);
mmc_init(mmc);
if ((state == MMC_WRITE || state == MMC_ERASE)) {
if (mmc_getwp(mmc) == 1) {
printf("Error: card is write protected!\n");
return 1;
}
}
switch (state) {
case MMC_READ:
n = mmc->block_dev.block_read(curr_device, blk,
cnt, addr);
/* flush cache after read */
flush_cache((ulong)addr, cnt * 512); /* FIXME */
break;
case MMC_WRITE:
n = mmc->block_dev.block_write(curr_device, blk,
cnt, addr);
break;
case MMC_ERASE:
n = mmc->block_dev.block_erase(curr_device, blk, cnt);
break;
default:
BUG();
}
printf("%d blocks %s: %s\n",
n, argv[1], (n == cnt) ? "OK" : "ERROR");
return (n == cnt) ? 0 : 1;
}
return CMD_RET_USAGE;
}
U_BOOT_CMD(
mmc, 6, 1, do_mmcops,
"MMC sub system",
"read addr blk# cnt\n"
"mmc write addr blk# cnt\n"
"mmc erase blk# cnt\n"
"mmc rescan\n"
"mmc part - lists available partition on current mmc device\n"
"mmc dev [dev] [part] - show or set current mmc device [partition]\n"
"mmc list - lists available devices\n"
#ifdef CONFIG_SUPPORT_EMMC_BOOT
"mmc open <dev> <boot_partition>\n"
" - Enable boot_part for booting and enable R/W access of boot_part\n"
"mmc close <dev> <boot_partition>\n"
" - Enable boot_part for booting and disable access to boot_part\n"
"mmc bootpart <device num> <boot part size MB> <RPMB part size MB>\n"
" - change sizes of boot and RPMB partions of specified device\n"
#endif
);
#endif /* !CONFIG_GENERIC_MMC */