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cmd_mmc.c: Add 'partconf' command to mmc
Add a partconf sub-command to the mmc command to allow for setting the boot_ack, boot_partition and partition_access fields of PARTITION_CONFIG (formerly BOOT_CONFIG, EXT_CSD[179]). Part of this requires changing the check for 'part' from an strncmp to a strcmp, like the rest of the sub-commands. Cc: Andy Fleming <afleming@gmail.com> Cc: Pantelis Antoniou <panto@antoniou-consulting.com> Acked-by: Jaehoon Chung <jh80.chung@samsung.com> Signed-off-by: Tom Rini <trini@ti.com> Signed-off-by: Pantelis Antoniou <panto@antoniou-consulting.com>
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f1fd957e12
commit
792970b0a3
3 changed files with 52 additions and 1 deletions
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@ -195,7 +195,7 @@ static int do_mmcops(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
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return 1;
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else
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return 0;
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} else if (strncmp(argv[1], "part", 4) == 0) {
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} else if (strcmp(argv[1], "part") == 0) {
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block_dev_desc_t *mmc_dev;
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struct mmc *mmc;
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@ -311,7 +311,33 @@ static int do_mmcops(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
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/* acknowledge to be sent during boot operation */
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return boot_part_access(mmc, 1, part_num, access);
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} else if (strcmp(argv[1], "partconf") == 0) {
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int dev;
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struct mmc *mmc;
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u8 ack, part_num, access;
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if (argc == 6) {
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dev = simple_strtoul(argv[2], NULL, 10);
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ack = simple_strtoul(argv[3], NULL, 10);
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part_num = simple_strtoul(argv[4], NULL, 10);
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access = simple_strtoul(argv[5], NULL, 10);
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} else {
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return CMD_RET_USAGE;
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}
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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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if (IS_SD(mmc)) {
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puts("PARTITION_CONFIG only exists on eMMC\n");
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return 1;
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}
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/* acknowledge to be sent during boot operation */
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return mmc_set_part_conf(mmc, ack, part_num, access);
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} else if (strcmp(argv[1], "bootpart-resize") == 0) {
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int dev;
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struct mmc *mmc;
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@ -451,6 +477,8 @@ U_BOOT_CMD(
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" - Enable boot_part for booting and disable access to boot_part\n"
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"mmc bootpart-resize <dev> <boot part size MB> <RPMB part size MB>\n"
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" - Change sizes of boot and RPMB partitions of specified device\n"
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"mmc partconf dev boot_ack boot_partition partition_access\n"
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" - Change the bits of the PARTITION_CONFIG field of the specified device\n"
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#endif
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"mmc setdsr - set DSR register value\n"
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);
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@ -1505,4 +1505,25 @@ int mmc_boot_part_access(struct mmc *mmc, u8 ack, u8 part_num, u8 access)
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}
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return 0;
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}
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/*
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* Modify EXT_CSD[179] which is PARTITION_CONFIG (formerly BOOT_CONFIG)
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* based on the passed in values for BOOT_ACK, BOOT_PARTITION_ENABLE and
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* PARTITION_ACCESS.
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*
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* Returns 0 on success.
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*/
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int mmc_set_part_conf(struct mmc *mmc, u8 ack, u8 part_num, u8 access)
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{
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int err;
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err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_PART_CONF,
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EXT_CSD_BOOT_ACK(ack) |
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EXT_CSD_BOOT_PART_NUM(part_num) |
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EXT_CSD_PARTITION_ACCESS(access));
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if (err)
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return err;
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return 0;
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}
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#endif
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@ -312,6 +312,8 @@ 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 send commands to open/close the specified boot partition */
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int mmc_boot_part_access(struct mmc *mmc, u8 ack, u8 part_num, u8 access);
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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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/**
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* Start device initialization and return immediately; it does not block on
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