There should not be a 'nand' command, a 'sf' command and certainly not
a new 'spi-nand' command. Write a 'mtd' command instead to manage all
MTD devices/partitions at once. This should be the preferred way to
access any MTD device.
Signed-off-by: Miquel Raynal <miquel.ray...@bootlin.com>
Acked-by: Jagan Teki <ja...@openedev.com>
---
cmd/Kconfig | 10 +-
cmd/Makefile | 1 +
cmd/mtd.c | 517 +++++++++++++++++++++++++++++++++++++++++++
drivers/mtd/Makefile | 2 +-
include/mtd.h | 1 +
5 files changed, 528 insertions(+), 3 deletions(-)
create mode 100644 cmd/mtd.c
diff --git a/cmd/Kconfig b/cmd/Kconfig
index ef43ed8dda..0778d2ecff 100644
--- a/cmd/Kconfig
+++ b/cmd/Kconfig
@@ -847,6 +847,12 @@ config CMD_MMC_SWRITE
Enable support for the "mmc swrite" command to write Android sparse
images to eMMC.
> +config CMD_MTD
+ bool "mtd"
+ select MTD_PARTITIONS
+ help
+ MTD commands support.
+
config CMD_NAND
bool "nand"
default y if NAND_SUNXI
@@ -1671,14 +1677,14 @@ config CMD_MTDPARTS
> config MTDIDS_DEFAULT
string "Default MTD IDs"
- depends on CMD_MTDPARTS || CMD_NAND || CMD_FLASH
+ depends on CMD_MTD || CMD_MTDPARTS || CMD_NAND || CMD_FLASH
help
Defines a default MTD IDs list for use with MTD partitions in the
Linux MTD command line partitions format.
> config MTDPARTS_DEFAULT
string "Default MTD partition scheme"
- depends on CMD_MTDPARTS || CMD_NAND || CMD_FLASH
+ depends on CMD_MTD || CMD_MTDPARTS || CMD_NAND || CMD_FLASH
help
Defines a default MTD partitioning scheme in the Linux MTD command
line partitions format
diff --git a/cmd/Makefile b/cmd/Makefile
index 323f1fd2c7..32fd102189 100644
--- a/cmd/Makefile
+++ b/cmd/Makefile
@@ -90,6 +90,7 @@ obj-$(CONFIG_CMD_MISC) += misc.o
obj-$(CONFIG_CMD_MMC) += mmc.o
obj-$(CONFIG_CMD_MMC_SPI) += mmc_spi.o
obj-$(CONFIG_MP) += mp.o
+obj-$(CONFIG_CMD_MTD) += mtd.o
obj-$(CONFIG_CMD_MTDPARTS) += mtdparts.o
obj-$(CONFIG_CMD_NAND) += nand.o
obj-$(CONFIG_CMD_NET) += net.o
diff --git a/cmd/mtd.c b/cmd/mtd.c
new file mode 100644
index 0000000000..32295fe86c
--- /dev/null
+++ b/cmd/mtd.c
@@ -0,0 +1,517 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * mtd.c
+ *
+ * Generic command to handle basic operations on any memory device.
+ *
+ * Copyright: Bootlin, 2018
+ * Author: Miquèl Raynal <miquel.ray...@bootlin.com>
+ */
+
+#include <command.h>
+#include <common.h>
+#include <console.h>
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/partitions.h>
+#include <malloc.h>
+#include <mapmem.h>
+#include <mtd.h>
+#include <dm/device.h>
+#include <dm/uclass-internal.h>
+
+#define MTD_NAME_MAX_LEN 20
+
+static char *old_mtdparts;
+
+static void mtd_dump_buf(u8 *buf, uint len, uint offset)
+{
+ int i, j;
+
+ for (i = 0; i < len; ) {
+ printf("0x%08x:\t", offset + i);
+ for (j = 0; j < 8; j++)
+ printf("%02x ", buf[i + j]);
+ printf(" ");
+ i += 8;
+ for (j = 0; j < 8; j++)
+ printf("%02x ", buf[i + j]);
+ printf("\n");
+ i += 8;
+ }
+}
+
+static void mtd_show_parts(struct mtd_info *mtd, int level)
+{
+ struct mtd_info *part;
+ int i;
+
+ if (list_empty(&mtd->partitions))
+ return;
+
+ list_for_each_entry(part, &mtd->partitions, node) {
+ for (i = 0; i < level; i++)
+ printf("\t");
+ printf("* %s\n", part->name);
+ for (i = 0; i < level; i++)
+ printf("\t");
+ printf(" > Offset: 0x%llx bytes\n", part->offset);
+ for (i = 0; i < level; i++)
+ printf("\t");
+ printf(" > Size: 0x%llx bytes\n", part->size);
+
+ mtd_show_parts(part, level + 1);
+ }
+}
+
+static void mtd_show_device(struct mtd_info *mtd)
+{
+ /* Device */
+ printf("* %s", mtd->name);
+ if (mtd->dev)
+ printf(" [device: %s] [parent: %s] [driver: %s]",
+ mtd->dev->name, mtd->dev->parent->name,
+ mtd->dev->driver->name);
+ printf("\n");
+
+ /* MTD device information */
+ printf(" > type: ");
+ switch (mtd->type) {
+ case MTD_RAM:
+ printf("RAM\n");
+ break;
+ case MTD_ROM:
+ printf("ROM\n");
+ break;
+ case MTD_NORFLASH:
+ printf("NOR flash\n");
+ break;
+ case MTD_NANDFLASH:
+ printf("NAND flash\n");
+ break;
+ case MTD_DATAFLASH:
+ printf("Data flash\n");
+ break;
+ case MTD_UBIVOLUME:
+ printf("UBI volume\n");
+ break;
+ case MTD_MLCNANDFLASH:
+ printf("MLC NAND flash\n");
+ break;
+ case MTD_ABSENT:
+ default:
+ printf("Unknown\n");
+ break;
+ }
+
+ printf(" > Size: 0x%llx bytes\n", mtd->size);
+ printf(" > Block: 0x%x bytes\n", mtd->erasesize);
+ printf(" > Min I/O: 0x%x bytes\n", mtd->writesize);
+
+ if (mtd->oobsize) {
+ printf(" > OOB size: %u bytes\n", mtd->oobsize);
+ printf(" > OOB available: %u bytes\n", mtd->oobavail);
+ }
+
+ if (mtd->ecc_strength) {
+ printf(" > ECC strength: %u bits\n", mtd->ecc_strength);
+ printf(" > ECC step size: %u bytes\n", mtd->ecc_step_size);
+ printf(" > Bitflip threshold: %u bits\n",
+ mtd->bitflip_threshold);
+ }
+
+ /* MTD partitions, if any */
+ mtd_show_parts(mtd, 1);
+}
+
+#if IS_ENABLED(CONFIG_MTD)
+static void mtd_probe_uclass_mtd_devs(void)
+{
+ struct udevice *dev;
+ int idx = 0;
+
+ /* Probe devices with DM compliant drivers */
+ while (!uclass_find_device(UCLASS_MTD, idx, &dev) && dev) {
+ mtd_probe(dev);
+ idx++;
+ }
+}
+#else
+static void mtd_probe_uclass_mtd_devs(void) { }
+#endif
