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https://github.com/brain-hackers/u-boot-brain
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![Lei Wen](/assets/img/avatar_default.png)
For emmc, it may have up to 7 partitions: two boot partitions, one user partition, one RPMB partition and four general purpose partitions. (Refer to JESD84-A44.pdf/page 154) As bootloader may need to read out or reflashing images on those different partitions, it is better to enable the partition switch with console command support. Also for partition would be restore to user partition(part 0) when CMD0 is used, so change mmc_init routine to perform normal initialization only once for each slot, unless use the rescan command to force init again. Signed-off-by: Lei Wen <leiwen@marvell.com> Acked-by: Andy Fleming <afleming@freescale.com>
305 lines
7.1 KiB
C
305 lines
7.1 KiB
C
/*
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* (C) Copyright 2003
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* Kyle Harris, kharris@nexus-tech.net
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#include <common.h>
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#include <command.h>
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#include <mmc.h>
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static int curr_device = -1;
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#ifndef CONFIG_GENERIC_MMC
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int do_mmc (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
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{
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int dev;
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if (argc < 2)
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return cmd_usage(cmdtp);
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if (strcmp(argv[1], "init") == 0) {
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if (argc == 2) {
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if (curr_device < 0)
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dev = 1;
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else
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dev = curr_device;
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} else if (argc == 3) {
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dev = (int)simple_strtoul(argv[2], NULL, 10);
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} else {
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return cmd_usage(cmdtp);
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}
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if (mmc_legacy_init(dev) != 0) {
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puts("No MMC card found\n");
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return 1;
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}
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curr_device = dev;
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printf("mmc%d is available\n", curr_device);
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} else if (strcmp(argv[1], "device") == 0) {
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if (argc == 2) {
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if (curr_device < 0) {
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puts("No MMC device available\n");
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return 1;
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}
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} else if (argc == 3) {
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dev = (int)simple_strtoul(argv[2], NULL, 10);
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#ifdef CONFIG_SYS_MMC_SET_DEV
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if (mmc_set_dev(dev) != 0)
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return 1;
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#endif
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curr_device = dev;
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} else {
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return cmd_usage(cmdtp);
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}
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printf("mmc%d is current device\n", curr_device);
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} else {
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return cmd_usage(cmdtp);
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}
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return 0;
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}
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U_BOOT_CMD(
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mmc, 3, 1, do_mmc,
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"MMC sub-system",
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"init [dev] - init MMC sub system\n"
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"mmc device [dev] - show or set current device"
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);
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#else /* !CONFIG_GENERIC_MMC */
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static void print_mmcinfo(struct mmc *mmc)
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{
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printf("Device: %s\n", mmc->name);
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printf("Manufacturer ID: %x\n", mmc->cid[0] >> 24);
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printf("OEM: %x\n", (mmc->cid[0] >> 8) & 0xffff);
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printf("Name: %c%c%c%c%c \n", mmc->cid[0] & 0xff,
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(mmc->cid[1] >> 24), (mmc->cid[1] >> 16) & 0xff,
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(mmc->cid[1] >> 8) & 0xff, mmc->cid[1] & 0xff);
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printf("Tran Speed: %d\n", mmc->tran_speed);
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printf("Rd Block Len: %d\n", mmc->read_bl_len);
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printf("%s version %d.%d\n", IS_SD(mmc) ? "SD" : "MMC",
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(mmc->version >> 4) & 0xf, mmc->version & 0xf);
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printf("High Capacity: %s\n", mmc->high_capacity ? "Yes" : "No");
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puts("Capacity: ");
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print_size(mmc->capacity, "\n");
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printf("Bus Width: %d-bit\n", mmc->bus_width);
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}
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int do_mmcinfo (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
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{
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struct mmc *mmc;
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if (curr_device < 0) {
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if (get_mmc_num() > 0)
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curr_device = 0;
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else {
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puts("No MMC device available\n");
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return 1;
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}
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}
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mmc = find_mmc_device(curr_device);
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if (mmc) {
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mmc_init(mmc);
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print_mmcinfo(mmc);
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return 0;
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} else {
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printf("no mmc device at slot %x\n", curr_device);
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return 1;
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}
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}
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U_BOOT_CMD(
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mmcinfo, 1, 0, do_mmcinfo,
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"display MMC info",
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" - device number of the device to dislay info of\n"
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""
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);
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int do_mmcops(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
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{
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if (argc < 2)
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return cmd_usage(cmdtp);
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if (curr_device < 0) {
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if (get_mmc_num() > 0)
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curr_device = 0;
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else {
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puts("No MMC device available\n");
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return 1;
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}
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}
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if (strcmp(argv[1], "rescan") == 0) {
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struct mmc *mmc = find_mmc_device(curr_device);
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if (!mmc) {
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printf("no mmc device at slot %x\n", curr_device);
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return 1;
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}
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mmc->has_init = 0;
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mmc_init(mmc);
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return 0;
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} else if (strncmp(argv[1], "part", 4) == 0) {
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block_dev_desc_t *mmc_dev;
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struct mmc *mmc = find_mmc_device(curr_device);
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if (!mmc) {
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printf("no mmc device at slot %x\n", curr_device);
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return 1;
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}
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mmc_init(mmc);
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mmc_dev = mmc_get_dev(curr_device);
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if (mmc_dev != NULL &&
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mmc_dev->type != DEV_TYPE_UNKNOWN) {
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print_part(mmc_dev);
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return 0;
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}
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puts("get mmc type error!\n");
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return 1;
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} else if (strcmp(argv[1], "list") == 0) {
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print_mmc_devices('\n');
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return 0;
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} else if (strcmp(argv[1], "dev") == 0) {
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int dev, part = -1;
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struct mmc *mmc;
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if (argc == 2)
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dev = curr_device;
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else if (argc == 3)
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dev = simple_strtoul(argv[2], NULL, 10);
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else if (argc == 4) {
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dev = (int)simple_strtoul(argv[2], NULL, 10);
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part = (int)simple_strtoul(argv[3], NULL, 10);
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if (part > PART_ACCESS_MASK) {
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printf("#part_num shouldn't be larger"
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" than %d\n", PART_ACCESS_MASK);
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return 1;
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}
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} else
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return cmd_usage(cmdtp);
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mmc = find_mmc_device(dev);
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if (!mmc) {
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printf("no mmc device at slot %x\n", dev);
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return 1;
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}
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mmc_init(mmc);
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if (part != -1) {
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int ret;
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if (mmc->part_config == MMCPART_NOAVAILABLE) {
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printf("Card doesn't support part_switch\n");
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return 1;
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}
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if (part != mmc->part_num) {
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ret = mmc_switch_part(dev, part);
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if (!ret)
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mmc->part_num = part;
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printf("switch to partions #%d, %s\n",
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part, (!ret) ? "OK" : "ERROR");
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}
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}
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curr_device = dev;
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if (mmc->part_config == MMCPART_NOAVAILABLE)
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printf("mmc%d is current device\n", curr_device);
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else
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printf("mmc%d(part %d) is current device\n",
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curr_device, mmc->part_num);
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return 0;
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} else if (strcmp(argv[1], "read") == 0) {
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void *addr = (void *)simple_strtoul(argv[2], NULL, 16);
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u32 cnt = simple_strtoul(argv[4], NULL, 16);
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u32 n;
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u32 blk = simple_strtoul(argv[3], NULL, 16);
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struct mmc *mmc = find_mmc_device(curr_device);
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if (!mmc) {
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printf("no mmc device at slot %x\n", curr_device);
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return 1;
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}
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printf("\nMMC read: dev # %d, block # %d, count %d ... ",
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curr_device, blk, cnt);
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mmc_init(mmc);
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n = mmc->block_dev.block_read(curr_device, blk, cnt, addr);
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/* flush cache after read */
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flush_cache((ulong)addr, cnt * 512); /* FIXME */
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printf("%d blocks read: %s\n",
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n, (n==cnt) ? "OK" : "ERROR");
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return (n == cnt) ? 0 : 1;
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} else if (strcmp(argv[1], "write") == 0) {
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void *addr = (void *)simple_strtoul(argv[2], NULL, 16);
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u32 cnt = simple_strtoul(argv[4], NULL, 16);
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u32 n;
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struct mmc *mmc = find_mmc_device(curr_device);
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int blk = simple_strtoul(argv[3], NULL, 16);
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if (!mmc) {
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printf("no mmc device at slot %x\n", curr_device);
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return 1;
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}
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printf("\nMMC write: dev # %d, block # %d, count %d ... ",
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curr_device, blk, cnt);
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mmc_init(mmc);
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n = mmc->block_dev.block_write(curr_device, blk, cnt, addr);
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printf("%d blocks written: %s\n",
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n, (n == cnt) ? "OK" : "ERROR");
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return (n == cnt) ? 0 : 1;
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}
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return cmd_usage(cmdtp);
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}
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U_BOOT_CMD(
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mmc, 6, 1, do_mmcops,
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"MMC sub system",
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"read addr blk# cnt\n"
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"mmc write addr blk# cnt\n"
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"mmc rescan\n"
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"mmc part - lists available partition on current mmc device\n"
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"mmc dev [dev] [part] - show or set current mmc device [partition]\n"
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"mmc list - lists available devices");
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#endif
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