cmd: mmc: add mmc partconf read capability
This patch allows to show the EXT_CSD[179] partition_config
register info, just by specifying the dev param:
U-Boot> mmc partconf 0
EXT_CSD[179], PARTITION_CONFIG:
BOOT_ACK: 0x0
BOOT_PARTITION_ENABLE: 0x0
PARTITION_ACCESS: 0x0
Signed-off-by: Angelo Dureghello <angelo@sysam.it>
Signed-off-by: Anatolij Gustschin <agust@denx.de>
diff --git a/cmd/mmc.c b/cmd/mmc.c
index f7b7568..00697fc 100644
--- a/cmd/mmc.c
+++ b/cmd/mmc.c
@@ -643,6 +643,28 @@
printf("EMMC RPMB partition Size %d MB\n", rpmbsize);
return CMD_RET_SUCCESS;
}
+
+static int mmc_partconf_print(struct mmc *mmc)
+{
+ u8 ack, access, part;
+
+ if (mmc->part_config == MMCPART_NOAVAILABLE) {
+ printf("No part_config info for ver. 0x%x\n", mmc->version);
+ return CMD_RET_FAILURE;
+ }
+
+ access = EXT_CSD_EXTRACT_PARTITION_ACCESS(mmc->part_config);
+ ack = EXT_CSD_EXTRACT_BOOT_ACK(mmc->part_config);
+ part = EXT_CSD_EXTRACT_BOOT_PART(mmc->part_config);
+
+ printf("EXT_CSD[179], PARTITION_CONFIG:\n"
+ "BOOT_ACK: 0x%x\n"
+ "BOOT_PARTITION_ENABLE: 0x%x\n"
+ "PARTITION_ACCESS: 0x%x\n", ack, part, access);
+
+ return CMD_RET_SUCCESS;
+}
+
static int do_mmc_partconf(cmd_tbl_t *cmdtp, int flag,
int argc, char * const argv[])
{
@@ -650,13 +672,10 @@
struct mmc *mmc;
u8 ack, part_num, access;
- if (argc != 5)
+ if (argc != 2 && argc != 5)
return CMD_RET_USAGE;
dev = simple_strtoul(argv[1], NULL, 10);
- ack = simple_strtoul(argv[2], NULL, 10);
- part_num = simple_strtoul(argv[3], NULL, 10);
- access = simple_strtoul(argv[4], NULL, 10);
mmc = init_mmc_device(dev, false);
if (!mmc)
@@ -667,6 +686,13 @@
return CMD_RET_FAILURE;
}
+ if (argc == 2)
+ return mmc_partconf_print(mmc);
+
+ ack = simple_strtoul(argv[2], NULL, 10);
+ part_num = simple_strtoul(argv[3], NULL, 10);
+ access = simple_strtoul(argv[4], NULL, 10);
+
/* acknowledge to be sent during boot operation */
return mmc_set_part_conf(mmc, ack, part_num, access);
}
@@ -832,8 +858,8 @@
" - 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 partconf dev boot_ack boot_partition partition_access\n"
- " - Change the bits of the PARTITION_CONFIG 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"
" - Change the RST_n_FUNCTION field of the specified device\n"
" WARNING: This is a write-once field and 0 / 1 / 2 are the only valid values.\n"
diff --git a/drivers/mmc/mmc_boot.c b/drivers/mmc/mmc_boot.c
index ac6f56f..6d77ce9 100644
--- a/drivers/mmc/mmc_boot.c
+++ b/drivers/mmc/mmc_boot.c
@@ -100,10 +100,19 @@
*/
int mmc_set_part_conf(struct mmc *mmc, u8 ack, u8 part_num, u8 access)
{
- return mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_PART_CONF,
- EXT_CSD_BOOT_ACK(ack) |
- EXT_CSD_BOOT_PART_NUM(part_num) |
- EXT_CSD_PARTITION_ACCESS(access));
+ int ret;
+ u8 part_conf;
+
+ part_conf = EXT_CSD_BOOT_ACK(ack) |
+ EXT_CSD_BOOT_PART_NUM(part_num) |
+ EXT_CSD_PARTITION_ACCESS(access);
+
+ ret = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_PART_CONF,
+ part_conf);
+ if (!ret)
+ mmc->part_config = part_conf;
+
+ return ret;
}
/*
diff --git a/include/mmc.h b/include/mmc.h
index 16a5c20..010ebe0 100644
--- a/include/mmc.h
+++ b/include/mmc.h
@@ -221,6 +221,10 @@
#define EXT_CSD_BOOT_PART_NUM(x) (x << 3)
#define EXT_CSD_PARTITION_ACCESS(x) (x << 0)
+#define EXT_CSD_EXTRACT_BOOT_ACK(x) (((x) >> 6) & 0x1)
+#define EXT_CSD_EXTRACT_BOOT_PART(x) (((x) >> 3) & 0x7)
+#define EXT_CSD_EXTRACT_PARTITION_ACCESS(x) ((x) & 0x7)
+
#define EXT_CSD_BOOT_BUS_WIDTH_MODE(x) (x << 3)
#define EXT_CSD_BOOT_BUS_WIDTH_RESET(x) (x << 2)
#define EXT_CSD_BOOT_BUS_WIDTH_WIDTH(x) (x)