Signed-off-by: Ben Gardiner <[email protected]>
---
mmc.h | 3 +++
mmc_cmds.c | 40 ++++++++++++++++++++++++++++++++++------
2 files changed, 37 insertions(+), 6 deletions(-)
diff --git a/mmc.h b/mmc.h
index bedde31..5385e0e 100644
--- a/mmc.h
+++ b/mmc.h
@@ -48,6 +48,9 @@
#define EXT_CSD_RST_N_FUNCTION 162 /* R/W */
#define EXT_CSD_PARTITIONING_SUPPORT 160 /* RO */
#define EXT_CSD_PARTITION_SETTING_COMPLETED 155 /* R/W */
+#define EXT_CSD_ENH_SIZE_MULT_2 142
+#define EXT_CSD_ENH_SIZE_MULT_1 141
+#define EXT_CSD_ENH_SIZE_MULT_0 140
#define EXT_CSD_ENH_START_ADDR_3 139
#define EXT_CSD_ENH_START_ADDR_2 138
#define EXT_CSD_ENH_START_ADDR_1 137
diff --git a/mmc_cmds.c b/mmc_cmds.c
index 149c904..37bb211 100644
--- a/mmc_cmds.c
+++ b/mmc_cmds.c
@@ -439,6 +439,16 @@ int is_blockaddresed(__u8 *ext_csd)
return (sectors > (2u * 1024 * 1024 * 1024) / 512);
}
+unsigned int get_hc_wp_grp_size(__u8 *ext_csd)
+{
+ return ext_csd[221];
+}
+
+unsigned int get_hc_erase_grp_size(__u8 *ext_csd)
+{
+ return ext_csd[224];
+}
+
int do_read_extcsd(int nargs, char **argv)
{
__u8 ext_csd[512], ext_csd_rev, reg;
@@ -593,14 +603,22 @@ int do_read_extcsd(int nargs, char **argv)
/* A441/A43: reserved [227] */
printf("Boot partition size [BOOT_SIZE_MULTI: 0x%02x]\n", ext_csd[226]);
printf("Access size [ACC_SIZE: 0x%02x]\n", ext_csd[225]);
+
+ reg = get_hc_erase_grp_size(ext_csd);
printf("High-capacity erase unit size [HC_ERASE_GRP_SIZE: 0x%02x]\n",
- ext_csd[224]);
+ reg);
+ printf(" i.e. %u KiB\n", 512 * reg);
+
printf("High-capacity erase timeout [ERASE_TIMEOUT_MULT: 0x%02x]\n",
ext_csd[223]);
printf("Reliable write sector count [REL_WR_SEC_C: 0x%02x]\n",
ext_csd[222]);
+
+ reg = get_hc_wp_grp_size(ext_csd);
printf("High-capacity W protect group size [HC_WP_GRP_SIZE: 0x%02x]\n",
- ext_csd[221]);
+ reg);
+ printf(" i.e. %lu KiB\n", 512l * get_hc_erase_grp_size(ext_csd) * reg);
+
printf("Sleep current (VCC) [S_C_VCC: 0x%02x]\n", ext_csd[220]);
printf("Sleep current (VCCQ) [S_C_VCCQ: 0x%02x]\n", ext_csd[219]);
/* A441/A43: reserved [218] */
@@ -749,9 +767,14 @@ int do_read_extcsd(int nargs, char **argv)
else
printf(" Device cannot have enhanced tech.\n");
+ reg = (ext_csd[159] << 16) | (ext_csd[158] << 8) |
+ ext_csd[157];
printf("Max Enhanced Area Size [MAX_ENH_SIZE_MULT]: 0x%06x\n",
- (ext_csd[159] << 16) | (ext_csd[158] << 8) |
- ext_csd[157]);
+ reg);
+ unsigned int wp_sz = get_hc_wp_grp_size(ext_csd);
+ unsigned int erase_sz = get_hc_erase_grp_size(ext_csd);
+ printf(" i.e. %lu KiB\n", 512l * reg * wp_sz * erase_sz);
+
printf("Partitions attribute [PARTITIONS_ATTRIBUTE]: 0x%02x\n",
ext_csd[156]);
reg = ext_csd[EXT_CSD_PARTITION_SETTING_COMPLETED];
@@ -773,9 +796,14 @@ int do_read_extcsd(int nargs, char **argv)
printf(" [GP_SIZE_MULT_1]: 0x%06x\n", (ext_csd[145] << 16) |
(ext_csd[144] << 8) | ext_csd[143]);
+ reg = (ext_csd[EXT_CSD_ENH_SIZE_MULT_2] << 16) |
+ (ext_csd[EXT_CSD_ENH_SIZE_MULT_1] << 8) |
+ ext_csd[EXT_CSD_ENH_SIZE_MULT_0];
printf("Enhanced User Data Area Size"
- " [ENH_SIZE_MULT]: 0x%06x\n", (ext_csd[142] << 16) |
- (ext_csd[141] << 8) | ext_csd[140]);
+ " [ENH_SIZE_MULT]: 0x%06x\n", reg);
+ printf(" i.e. %lu KiB\n", 512l * reg *
+ get_hc_erase_grp_size(ext_csd) *
+ get_hc_wp_grp_size(ext_csd));
reg = (ext_csd[EXT_CSD_ENH_START_ADDR_3] << 24) |
(ext_csd[EXT_CSD_ENH_START_ADDR_2] << 16) |
--
1.7.3.5
--
To unsubscribe from this list: send the line "unsubscribe linux-mmc" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
