[U-Boot] [PATCH v3 7/9] dfu:mmc: raw data write fix
Mateusz Zalega
m.zalega at samsung.com
Thu Jan 9 15:31:57 CET 2014
When user attempted to perform a raw write using DFU (vide
dfu_fill_entity_mmc) with MMC interface not initialized before,
get_mmc_blk_size() reported invalid (zero) block size - it wasn't
possible to write ie. a new u-boot image.
This commit fixes that by initializing device in get_mmc_blk_size() when
needed.
Tested on Samsung Goni.
v2 changes:
- code cleanup
- minor dfu_alt_info format change
v3 changes:
- moved invalid block length check to mmc core
- removed redundant 'has_init' check
Change-Id: Icb50bb9f805a9a78848acd19f682fad474cb9082
Signed-off-by: Mateusz Zalega <m.zalega at samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park at samsung.com>
Reviewed-by: Lukasz Majewski <l.majewski at samsung.com>
Cc: Minkyu Kang <mk7.kang at samsung.com>
---
drivers/dfu/dfu_mmc.c | 106 ++++++++++++++++++++++++++-----------------
drivers/mmc/mmc.c | 13 ++++--
include/configs/am335x_evm.h | 8 ++--
include/configs/trats.h | 2 +-
include/configs/trats2.h | 2 +-
include/dfu.h | 5 --
6 files changed, 80 insertions(+), 56 deletions(-)
diff --git a/drivers/dfu/dfu_mmc.c b/drivers/dfu/dfu_mmc.c
index f942758..075e4cd 100644
--- a/drivers/dfu/dfu_mmc.c
+++ b/drivers/dfu/dfu_mmc.c
@@ -168,66 +168,88 @@ int dfu_read_medium_mmc(struct dfu_entity *dfu, u64 offset, void *buf,
return ret;
}
+/*
+ * @param s Parameter string containing space-separated arguments:
+ * 1st:
+ * raw (raw read/write)
+ * fat (files)
+ * ext4 (^)
+ * part (partition image)
+ * 2nd and 3rd:
+ * lba_start and lba_size, for raw write
+ * mmc_dev and mmc_part, for filesystems and part
+ */
int dfu_fill_entity_mmc(struct dfu_entity *dfu, char *s)
{
- int dev, part;
- struct mmc *mmc;
- block_dev_desc_t *blk_dev;
- disk_partition_t partinfo;
- char *st;
-
- dfu->dev_type = DFU_DEV_MMC;
- st = strsep(&s, " ");
- if (!strcmp(st, "mmc")) {
- dfu->layout = DFU_RAW_ADDR;
- dfu->data.mmc.lba_start = simple_strtoul(s, &s, 16);
- dfu->data.mmc.lba_size = simple_strtoul(++s, &s, 16);
- dfu->data.mmc.lba_blk_size = get_mmc_blk_size(dfu->dev_num);
- } else if (!strcmp(st, "fat")) {
- dfu->layout = DFU_FS_FAT;
- } else if (!strcmp(st, "ext4")) {
- dfu->layout = DFU_FS_EXT4;
- } else if (!strcmp(st, "part")) {
+ const char *argv[3];
+ const char **parg = argv;
+ for (; parg < argv + sizeof(argv) / sizeof(*argv); ++parg) {
+ *parg = strsep(&s, " ");
+ if (*parg == NULL) {
+ error("Invalid number of arguments.\n");
+ return -ENODEV;
+ }
+ }
- dfu->layout = DFU_RAW_ADDR;
+ const char *entity_type = argv[0];
+ /*
+ * Base 0 means we'll accept (prefixed with 0x or 0) base 16, 8,
+ * with default 10.
+ */
+ size_t second_arg = simple_strtoul(argv[1], NULL, 0);
+ size_t third_arg = simple_strtoul(argv[2], NULL, 0);
- dev = simple_strtoul(s, &s, 10);
- s++;
- part = simple_strtoul(s, &s, 10);
+ struct mmc *mmc = find_mmc_device(dfu->dev_num);
+ if (mmc == NULL) {
+ error("Couldn't find MMC device no. %d.\n", dfu->dev_num);
+ return -ENODEV;
+ }
- mmc = find_mmc_device(dev);
- if (mmc == NULL || mmc_init(mmc)) {
- printf("%s: could not find mmc device #%d!\n",
- __func__, dev);
- return -ENODEV;
- }
+ if (mmc_init(mmc)) {
+ error("Couldn't init MMC device.\n");
+ return -ENODEV;
+ }
- blk_dev = &mmc->block_dev;
- if (get_partition_info(blk_dev, part, &partinfo) != 0) {
- printf("%s: could not find partition #%d on mmc device #%d!\n",
- __func__, part, dev);
+ if (!strcmp(entity_type, "raw")) {
+ dfu->layout = DFU_RAW_ADDR;
+ dfu->data.mmc.lba_start = second_arg;
+ dfu->data.mmc.lba_size = third_arg;
+ dfu->data.mmc.lba_blk_size = mmc->read_bl_len;
+ } else if (!strcmp(entity_type, "part")) {
+ disk_partition_t partinfo;
+ block_dev_desc_t *blk_dev = &mmc->block_dev;
+ int mmcdev = second_arg;
+ int mmcpart = third_arg;
+
+ if (get_partition_info(blk_dev, mmcpart, &partinfo) != 0) {
+ error("Couldn't find part #%d on mmc device #%d\n",
+ mmcpart, mmcdev);
return -ENODEV;
}
- dfu->data.mmc.lba_start = partinfo.start;
- dfu->data.mmc.lba_size = partinfo.size;
- dfu->data.mmc.lba_blk_size = partinfo.blksz;
-
+ dfu->layout = DFU_RAW_ADDR;
+ dfu->data.mmc.lba_start = partinfo.start;
+ dfu->data.mmc.lba_size = partinfo.size;
+ dfu->data.mmc.lba_blk_size = partinfo.blksz;
+ } else if (!strcmp(entity_type, "fat")) {
+ dfu->layout = DFU_FS_FAT;
+ } else if (!strcmp(entity_type, "ext4")) {
+ dfu->layout = DFU_FS_EXT4;
} else {
- printf("%s: Memory layout (%s) not supported!\n", __func__, st);
+ error("Memory layout (%s) not supported!\n", entity_type);
return -ENODEV;
}
- if (dfu->layout == DFU_FS_EXT4 || dfu->layout == DFU_FS_FAT) {
- dfu->data.mmc.dev = simple_strtoul(s, &s, 10);
- dfu->data.mmc.part = simple_strtoul(++s, &s, 10);
+ /* if it's NOT a raw write */
+ if (strcmp(entity_type, "raw")) {
+ dfu->data.mmc.dev = second_arg;
+ dfu->data.mmc.part = third_arg;
}
+ dfu->dev_type = DFU_DEV_MMC;
dfu->read_medium = dfu_read_medium_mmc;
dfu->write_medium = dfu_write_medium_mmc;
dfu->flush_medium = dfu_flush_medium_mmc;
-
- /* initial state */
dfu->inited = 0;
return 0;
diff --git a/drivers/mmc/mmc.c b/drivers/mmc/mmc.c
index e1461a9..f2fa230 100644
--- a/drivers/mmc/mmc.c
+++ b/drivers/mmc/mmc.c
@@ -15,6 +15,7 @@
#include <malloc.h>
#include <linux/list.h>
#include <div64.h>
+#include <errno.h>
#include "mmc_private.h"
/* Set block count limit because of 16 bit register limit on some hardware*/
@@ -1266,17 +1267,23 @@ static int mmc_complete_init(struct mmc *mmc)
int mmc_init(struct mmc *mmc)
{
+ if (mmc->has_init)
+ return 0;
+
int err = IN_PROGRESS;
unsigned start = get_timer(0);
- if (mmc->has_init)
- return 0;
if (!mmc->init_in_progress)
err = mmc_start_init(mmc);
-
if (!err || err == IN_PROGRESS)
err = mmc_complete_init(mmc);
+
debug("%s: %d, time %lu\n", __func__, err, get_timer(start));
+
+ if (!mmc->read_bl_len || !mmc->write_bl_len) {
+ error("invalid block length\n");
+ return -ENODEV;
+ }
return err;
}
diff --git a/include/configs/am335x_evm.h b/include/configs/am335x_evm.h
index 8af4d6a..d76962f 100644
--- a/include/configs/am335x_evm.h
+++ b/include/configs/am335x_evm.h
@@ -312,10 +312,10 @@
"boot part 0 1;" \
"rootfs part 0 2;" \
"MLO fat 0 1;" \
- "MLO.raw mmc 100 100;" \
- "u-boot.img.raw mmc 300 400;" \
- "spl-os-args.raw mmc 80 80;" \
- "spl-os-image.raw mmc 900 2000;" \
+ "MLO.raw mmc 0x100 0x100;" \
+ "u-boot.img.raw mmc 0x300 0x400;" \
+ "spl-os-args.raw mmc 0x80 0x80;" \
+ "spl-os-image.raw mmc 0x900 0x2000;" \
"spl-os-args fat 0 1;" \
"spl-os-image fat 0 1;" \
"u-boot.img fat 0 1;" \
diff --git a/include/configs/trats.h b/include/configs/trats.h
index 6cd15c2..ed3b278 100644
--- a/include/configs/trats.h
+++ b/include/configs/trats.h
@@ -140,7 +140,7 @@
"name="PARTS_UMS",size=-,uuid=${uuid_gpt_"PARTS_UMS"}\0" \
#define CONFIG_DFU_ALT \
- "u-boot mmc 80 400;" \
+ "u-boot raw 0x80 0x400;" \
"uImage ext4 0 2;" \
"exynos4210-trats.dtb ext4 0 2;" \
""PARTS_ROOT" part 0 5\0"
diff --git a/include/configs/trats2.h b/include/configs/trats2.h
index 5d86a3d..a22be63 100644
--- a/include/configs/trats2.h
+++ b/include/configs/trats2.h
@@ -169,7 +169,7 @@
"name="PARTS_UMS",size=-,uuid=${uuid_gpt_"PARTS_UMS"}\0" \
#define CONFIG_DFU_ALT \
- "u-boot mmc 80 800;" \
+ "u-boot mmc 0x80 0x800;" \
"uImage ext4 0 2;" \
"exynos4412-trats2.dtb ext4 0 2;" \
""PARTS_ROOT" part 0 5\0"
diff --git a/include/dfu.h b/include/dfu.h
index f973426..f2e83db 100644
--- a/include/dfu.h
+++ b/include/dfu.h
@@ -64,11 +64,6 @@ struct ram_internal_data {
unsigned int size;
};
-static inline unsigned int get_mmc_blk_size(int dev)
-{
- return find_mmc_device(dev)->read_bl_len;
-}
-
#define DFU_NAME_SIZE 32
#define DFU_CMD_BUF_SIZE 128
#ifndef CONFIG_SYS_DFU_DATA_BUF_SIZE
--
1.8.2.1
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