Dear Grygorii,
On 2/12/21 7:32 PM, grygorii tertychnyi wrote:
> This patch allows to determine active boot partition in boot script:
>
> if mmc partboot ${mmcdev} 2; then
> echo "booted from eMMC boot1 partition"
> fi
I don't know what purpose this patch has.
Best Regards,
Jaehoon Chung
>
> Signed-off-by: Grygorii Tertychnyi <grygorii.tertych...@leica-geosystems.com>
> ---
> cmd/mmc.c | 39 +++++++++++++++++++++++++++++++++++++++
> 1 file changed, 39 insertions(+)
>
> diff --git a/cmd/mmc.c b/cmd/mmc.c
> index 1529a3e05ddd..010d6ab9aa19 100644
> --- a/cmd/mmc.c
> +++ b/cmd/mmc.c
> @@ -771,6 +771,41 @@ static int do_mmc_boot_resize(struct cmd_tbl *cmdtp, int
> flag,
> return CMD_RET_SUCCESS;
> }
>
> +static int do_mmc_partboot(struct cmd_tbl *cmdtp, int flag,
> + int argc, char *const argv[])
> +{
> + int dev;
> + struct mmc *mmc;
> + u8 part_args, part_emmc;
> +
> + if (argc != 3)
> + return CMD_RET_USAGE;
> +
> + dev = simple_strtoul(argv[1], NULL, 10);
> +
> + mmc = init_mmc_device(dev, false);
> + if (!mmc)
> + return CMD_RET_FAILURE;
> +
> + if (IS_SD(mmc)) {
> + puts("PARTITION_CONFIG only exists on eMMC\n");
> + return CMD_RET_FAILURE;
> + }
> +
> + if (mmc->part_config == MMCPART_NOAVAILABLE) {
> + printf("No part_config info for ver. 0x%x\n", mmc->version);
> + return CMD_RET_FAILURE;
> + }
> +
> + part_emmc = EXT_CSD_EXTRACT_BOOT_PART(mmc->part_config);
> + part_args = simple_strtoul(argv[2], NULL, 10);
> +
> + if (part_emmc == part_args)
> + return CMD_RET_SUCCESS;
> + else
> + return CMD_RET_FAILURE;
> +}
> +
> static int mmc_partconf_print(struct mmc *mmc)
> {
> u8 ack, access, part;
> @@ -953,6 +988,7 @@ static struct cmd_tbl cmd_mmc[] = {
> #ifdef CONFIG_SUPPORT_EMMC_BOOT
> U_BOOT_CMD_MKENT(bootbus, 5, 0, do_mmc_bootbus, "", ""),
> U_BOOT_CMD_MKENT(bootpart-resize, 4, 0, do_mmc_boot_resize, "", ""),
> + U_BOOT_CMD_MKENT(partboot, 3, 0, do_mmc_partboot, "", ""),
> U_BOOT_CMD_MKENT(partconf, 5, 0, do_mmc_partconf, "", ""),
> U_BOOT_CMD_MKENT(rst-function, 3, 0, do_mmc_rst_func, "", ""),
> #endif
> @@ -1021,6 +1057,9 @@ U_BOOT_CMD(
> " - Set the BOOT_BUS_WIDTH field of the specified device\n"
> "mmc bootpart-resize <dev> <boot part size MB> <RPMB part size MB>\n"
> " - Change sizes of boot and RPMB partitions of specified device\n"
> + "mmc partboot dev boot_partition\n"
> + " - Return success if the given boot_partition value matches
> BOOT_PARTITION_ENABLE\n"
> + " bit field of the specified device\n"
> "mmc partconf dev [boot_ack boot_partition partition_access]\n"
> " - Show or change the bits of the PARTITION_CONFIG field of the
> specified device\n"
> "mmc rst-function dev value\n"
>
