[U-Boot] [PATCH v2 17/18] mmc: extend the mmc hwpartition sub-command to change write reliability
Diego Santa Cruz
Diego.SantaCruz at spinetix.com
Thu Dec 4 18:02:14 CET 2014
This change extends the mmc hwpartition sub-command to change the
per-partition write reliability settings. It also changes the
syntax used for the enhanced user data area slightly to better
accomodate the write reliability option.
---
common/cmd_mmc.c | 116 ++++++++++++++++++++++++++++++++++++++++++-----------
1 files changed, 92 insertions(+), 24 deletions(-)
diff --git a/common/cmd_mmc.c b/common/cmd_mmc.c
index c0a4a3e..e226598 100644
--- a/common/cmd_mmc.c
+++ b/common/cmd_mmc.c
@@ -482,13 +482,81 @@ static int do_mmc_list(cmd_tbl_t *cmdtp, int flag,
return CMD_RET_SUCCESS;
}
+static int parse_hwpart_user(struct mmc_hwpart_conf *pconf,
+ int argc, char * const argv[])
+{
+ int i = 0;
+
+ memset(&pconf->user, 0, sizeof(pconf->user));
+
+ while (i < argc) {
+ if (!strcmp(argv[i], "enh")) {
+ if (i + 2 >= argc)
+ return -1;
+ pconf->user.enh_start =
+ simple_strtoul(argv[i+1], NULL, 10);
+ pconf->user.enh_size =
+ simple_strtoul(argv[i+2], NULL, 10);
+ i += 3;
+ } else if (!strcmp(argv[i], "wrrel")) {
+ if (i + 1 >= argc)
+ return -1;
+ pconf->user.wr_rel_change = 1;
+ if (!strcmp(argv[i+1], "on"))
+ pconf->user.wr_rel_set = 1;
+ else if (!strcmp(argv[i+1], "off"))
+ pconf->user.wr_rel_set = 0;
+ else
+ return -1;
+ i += 2;
+ } else {
+ break;
+ }
+ }
+ return i;
+}
+
+static int parse_hwpart_gp(struct mmc_hwpart_conf *pconf, int pidx,
+ int argc, char * const argv[])
+{
+ int i;
+
+ memset(&pconf->gp_part[pidx], 0, sizeof(pconf->gp_part[pidx]));
+
+ if (1 >= argc)
+ return -1;
+ pconf->gp_part[pidx].size = simple_strtoul(argv[0], NULL, 10);
+
+ i = 1;
+ while (i < argc) {
+ if (!strcmp(argv[i], "enh")) {
+ pconf->gp_part[pidx].enhanced = 1;
+ i += 1;
+ } else if (!strcmp(argv[i], "wrrel")) {
+ if (i + 1 >= argc)
+ return -1;
+ pconf->gp_part[pidx].wr_rel_change = 1;
+ if (!strcmp(argv[i+1], "on"))
+ pconf->gp_part[pidx].wr_rel_set = 1;
+ else if (!strcmp(argv[i+1], "off"))
+ pconf->gp_part[pidx].wr_rel_set = 0;
+ else
+ return -1;
+ i += 2;
+ } else {
+ break;
+ }
+ }
+ return i;
+}
+
static int do_mmc_hwpartition(cmd_tbl_t *cmdtp, int flag,
int argc, char * const argv[])
{
struct mmc *mmc;
struct mmc_hwpart_conf pconf = { };
enum mmc_hwpart_conf_mode mode = MMC_HWPART_CONF_CHECK;
- int i, pidx;
+ int i, r, pidx;
mmc = init_mmc_device(curr_device, false);
if (!mmc)
@@ -498,30 +566,21 @@ static int do_mmc_hwpartition(cmd_tbl_t *cmdtp, int flag,
return CMD_RET_USAGE;
i = 1;
while (i < argc) {
- if (!strcmp(argv[i], "userenh")) {
- if (i + 2 >= argc)
+ if (!strcmp(argv[i], "user")) {
+ i++;
+ r = parse_hwpart_user(&pconf, argc-i, &argv[i]);
+ if (r < 0)
return CMD_RET_USAGE;
- memset(&pconf.user, 0, sizeof(pconf.user));
- pconf.user.enh_start =
- simple_strtoul(argv[i+1], NULL, 10);
- pconf.user.enh_size =
- simple_strtoul(argv[i+2], NULL, 10);
- i += 3;
+ i += r;
} else if (!strncmp(argv[i], "gp", 2) &&
strlen(argv[i]) == 3 &&
argv[i][2] >= '1' && argv[i][2] <= '4') {
- if (i + 1 >= argc)
- return CMD_RET_USAGE;
pidx = argv[i][2] - '1';
- memset(&pconf.gp_part[pidx], 0,
- sizeof(pconf.gp_part[pidx]));
- pconf.gp_part[pidx].size =
- simple_strtoul(argv[i+1], NULL, 10);
- i += 2;
- if (i < argc && !strcmp(argv[i], "enh")) {
- pconf.gp_part[pidx].enhanced = 1;
- i++;
- }
+ i++;
+ r = parse_hwpart_gp(&pconf, pidx, argc-i, &argv[i]);
+ if (r < 0)
+ return CMD_RET_USAGE;
+ i += r;
} else if (!strcmp(argv[i], "check")) {
mode = MMC_HWPART_CONF_CHECK;
i++;
@@ -545,6 +604,9 @@ static int do_mmc_hwpartition(cmd_tbl_t *cmdtp, int flag,
} else {
puts("\tNo enhanced user data area\n");
}
+ if (pconf.user.wr_rel_change)
+ printf("\tUser partition write reliability: %s\n",
+ pconf.user.wr_rel_set ? "on" : "off");
for (pidx = 0; pidx < 4; pidx++) {
if (pconf.gp_part[pidx].size) {
printf("\tGP%i Capacity: ", pidx+1);
@@ -554,6 +616,9 @@ static int do_mmc_hwpartition(cmd_tbl_t *cmdtp, int flag,
} else {
printf("\tNo GP%i partition\n", pidx+1);
}
+ if (pconf.gp_part[pidx].wr_rel_change)
+ printf("\tGP%i write reliability: %s\n", pidx+1,
+ pconf.gp_part[pidx].wr_rel_set ? "on" : "off");
}
if (!mmc_hwpart_config(mmc, &pconf, mode)) {
@@ -562,6 +627,7 @@ static int do_mmc_hwpartition(cmd_tbl_t *cmdtp, int flag,
"power-cycle to make effective\n");
return CMD_RET_SUCCESS;
} else {
+ puts("Failed!\n");
return CMD_RET_FAILURE;
}
}
@@ -723,7 +789,7 @@ static cmd_tbl_t cmd_mmc[] = {
U_BOOT_CMD_MKENT(part, 1, 1, do_mmc_part, "", ""),
U_BOOT_CMD_MKENT(dev, 3, 0, do_mmc_dev, "", ""),
U_BOOT_CMD_MKENT(list, 1, 1, do_mmc_list, "", ""),
- U_BOOT_CMD_MKENT(hwpartition, 17, 0, do_mmc_hwpartition, "", ""),
+ U_BOOT_CMD_MKENT(hwpartition, 28, 0, do_mmc_hwpartition, "", ""),
#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, "", ""),
@@ -763,7 +829,7 @@ static int do_mmcops(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
}
U_BOOT_CMD(
- mmc, 18, 1, do_mmcops,
+ mmc, 29, 1, do_mmcops,
"MMC sub system",
"info - display info of the current MMC device\n"
"mmc read addr blk# cnt\n"
@@ -775,9 +841,11 @@ U_BOOT_CMD(
"mmc list - lists available devices\n"
"mmc hwpartition [args...] - does hardware partitioning\n"
" arguments (sizes in 512-byte blocks):\n"
- " [userenh start cnt] - sets enhanced user data area\n"
- " [gp1|gp2|gp3|gp4 cnt [enh]] - general purpose partition\n"
+ " [user [enh start cnt] [wrrel {on|off}]] - sets user data area attributes\n"
+ " [gp1|gp2|gp3|gp4 cnt [enh] [wrrel {on|off}]] - general purpose partition\n"
" [check|set|complete] - mode, complete set partitioning completed\n"
+ " WARNING: Partitioning is a write-once setting once it is set to complete.\n"
+ " Power cycling is required to initialize partitions after set to complete.\n"
#ifdef CONFIG_SUPPORT_EMMC_BOOT
"mmc bootbus dev boot_bus_width reset_boot_bus_width boot_mode\n"
" - Set the BOOT_BUS_WIDTH field of the specified device\n"
--
1.7.1
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