From: Pantelis Antoniou <pa...@antoniou-consulting.com>
Support for NAND storage devices to work with the DFU framework.
Signed-off-by: Pantelis Antoniou <pa...@antoniou-consulting.com>
Signed-off-by: Tom Rini <tr...@ti.com>
---
Changes in v5:
- Document CONFIG_DFU_NAND in README
Changes in v4: None
Changes in v3:
- Rework logic in nand_block_op for nand_(read|write)_skip_bad
returning
just a size for actual used length.
- Remove unused externs from drivers/dfu/dfu_nand.c
Changes in v2:
- nand_block_op calls nand_(read|write)_skip_bad directly.
- Bugfix in dfu_nand to make sure we set dfu->skip_bad to 0 on each
iteration.
README | 3 +
drivers/dfu/Makefile | 1 +
drivers/dfu/dfu.c | 8 ++
drivers/dfu/dfu_nand.c | 195
++++++++++++++++++++++++++++++++++++++++++++++++
include/dfu.h | 23 ++++++
5 files changed, 230 insertions(+)
create mode 100644 drivers/dfu/dfu_nand.c
diff --git a/README b/README
index 154b82f..c70251e 100644
--- a/README
+++ b/README
@@ -1338,6 +1338,9 @@ The following options need to be configured:
CONFIG_DFU_MMC
This enables support for exposing (e)MMC devices via
DFU.
+ CONFIG_DFU_NAND
+ This enables support for exposing NAND devices via DFU.
+
CONFIG_SYS_DFU_MAX_FILE_SIZE
When updating files rather than the raw storage device,
we use a static buffer to copy the file into and then
write
diff --git a/drivers/dfu/Makefile b/drivers/dfu/Makefile
index 7b717bc..153095d 100644
--- a/drivers/dfu/Makefile
+++ b/drivers/dfu/Makefile
@@ -27,6 +27,7 @@ LIB = $(obj)libdfu.o
COBJS-$(CONFIG_DFU_FUNCTION) += dfu.o
COBJS-$(CONFIG_DFU_MMC) += dfu_mmc.o
+COBJS-$(CONFIG_DFU_NAND) += dfu_nand.o
SRCS := $(COBJS-y:.o=.c)
OBJS := $(addprefix $(obj),$(COBJS-y))
diff --git a/drivers/dfu/dfu.c b/drivers/dfu/dfu.c
index 2fecf77..84139bd 100644
--- a/drivers/dfu/dfu.c
+++ b/drivers/dfu/dfu.c
@@ -86,6 +86,7 @@ int dfu_write(struct dfu_entity *dfu, void *buf,
int size, int blk_seq_num)
/* initial state */
dfu->crc = 0;
dfu->offset = 0;
+ dfu->bad_skip = 0;
dfu->i_blk_seq_num = 0;
dfu->i_buf_start = dfu_buf;
dfu->i_buf_end = dfu_buf + sizeof(dfu_buf);
@@ -235,6 +236,8 @@ int dfu_read(struct dfu_entity *dfu, void *buf,
int size, int blk_seq_num)
dfu->i_buf = dfu->i_buf_start;
dfu->b_left = 0;
+ dfu->bad_skip = 0;
+
dfu->inited = 1;
}
@@ -264,6 +267,8 @@ int dfu_read(struct dfu_entity *dfu, void *buf,
int size, int blk_seq_num)
dfu->i_buf = dfu->i_buf_start;
dfu->b_left = 0;
+ dfu->bad_skip = 0;
+
dfu->inited = 0;
}
@@ -286,6 +291,9 @@ static int dfu_fill_entity(struct dfu_entity
*dfu, char *s, int alt,
if (strcmp(interface, "mmc") == 0) {
if (dfu_fill_entity_mmc(dfu, s))
return -1;
+ } else if (strcmp(interface, "nand") == 0) {
+ if (dfu_fill_entity_nand(dfu, s))
+ return -1;
} else {
printf("%s: Device %s not (yet) supported!\n",
__func__, interface);
diff --git a/drivers/dfu/dfu_nand.c b/drivers/dfu/dfu_nand.c
new file mode 100644
index 0000000..b7f60dd
--- /dev/null
+++ b/drivers/dfu/dfu_nand.c
@@ -0,0 +1,195 @@
+/*
+ * dfu_nand.c -- DFU for NAND routines.
+ *
+ * Copyright (C) 2012-2013 Texas Instruments, Inc.
+ *
+ * Based on dfu_mmc.c which is:
+ * Copyright (C) 2012 Samsung Electronics
+ * author: Lukasz Majewski <l.majew...@samsung.com>
+ *
+ * This program is free software; you can redistribute it and/or
modify
+ * it under the terms of the GNU General Public License as published
by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA
+ */
+
+#include <common.h>
+#include <malloc.h>
+#include <errno.h>
+#include <div64.h>
+#include <dfu.h>
+#include <linux/mtd/mtd.h>
+#include <jffs2/load_kernel.h>
+#include <nand.h>
+
+enum dfu_nand_op {
+ DFU_OP_READ = 1,
+ DFU_OP_WRITE,
+};
+
+static int nand_block_op(enum dfu_nand_op op, struct dfu_entity *dfu,
+ u64 offset, void *buf, long *len)
+{
+ loff_t start;
+ size_t count, actual;
+ int ret;
+ int dev;
+ nand_info_t *nand;
+
+ /* if buf == NULL return total size of the area */
+ if (buf == NULL) {
+ *len = dfu->data.nand.size;
+ return 0;
+ }
+
+ start = dfu->data.nand.start + offset + dfu->bad_skip;
+ count = *len;
+ if (start + count >
+ dfu->data.nand.start + dfu->data.nand.size) {
+ printf("%s: block_op out of bounds\n", __func__);
+ return -1;
+ }
+
+ dev = nand_curr_device;
+ if (dev < 0 || dev >= CONFIG_SYS_MAX_NAND_DEVICE ||
+ !nand_info[dev].name) {
+ printf("%s: invalid nand device\n", __func__);
+ return -1;
+ }
+
+ nand = &nand_info[dev];
+
+ if (op == DFU_OP_READ)
+ ret = nand_read_skip_bad(nand, start, &count, &actual,
+ nand->size, buf);
+ else
+ ret = nand_write_skip_bad(nand, start, &count, &actual,
+ nand->size, buf, 0);
