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cmd: introduce 'write' command

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It's almost no extra code to hook up a buddy to the 'read' command. In
fact, since the command is passed its own 'struct cmd_tbl', we can use
the exact same callback, and let it figure out for itself whether it
was invoked as "read" or "write".

Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Rasmus Villemoes <rasmus.villemoes@prevas.dk>
This commit is contained in:
Rasmus Villemoes 2023-03-02 09:12:22 +01:00 committed by Tom Rini
parent fca7db5b80
commit 8311ac5fe0
3 changed files with 28 additions and 7 deletions
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5
cmd/Kconfig
View File

@ -1562,6 +1562,11 @@ config CMD_WDT
help
This provides commands to control the watchdog timer devices.
config CMD_WRITE
bool "write - Write binary data to a partition"
help
Provides low-level write access to a partition.
config CMD_AXI
bool "axi"
depends on AXI

1
cmd/Makefile
View File

@ -140,6 +140,7 @@ obj-$(CONFIG_CMD_PXE) += pxe.o
obj-$(CONFIG_CMD_WOL) += wol.o
obj-$(CONFIG_CMD_QFW) += qfw.o
obj-$(CONFIG_CMD_READ) += read.o
obj-$(CONFIG_CMD_WRITE) += read.o
obj-$(CONFIG_CMD_REGINFO) += reginfo.o
obj-$(CONFIG_CMD_REISER) += reiser.o
obj-$(CONFIG_CMD_REMOTEPROC) += remoteproc.o

29
cmd/read.c
View File

@ -13,14 +13,14 @@
#include <mapmem.h>
#include <part.h>
int do_read(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
static int
do_rw(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
{
struct blk_desc *dev_desc = NULL;
struct disk_partition part_info;
ulong offset, limit;
uint blk, cnt, res;
void *addr;
uint blk;
uint cnt;
int part;
if (argc != 6) {
@ -47,20 +47,35 @@ int do_read(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
}
if (cnt + blk > limit) {
printf("Read out of range\n");
printf("%s out of range\n", cmdtp->name);
return 1;
}
if (blk_dread(dev_desc, offset + blk, cnt, addr) != cnt) {
printf("Error reading blocks\n");
if (IS_ENABLED(CONFIG_CMD_WRITE) && !strcmp(cmdtp->name, "write"))
res = blk_dwrite(dev_desc, offset + blk, cnt, addr);
else
res = blk_dread(dev_desc, offset + blk, cnt, addr);
if (res != cnt) {
printf("%s error\n", cmdtp->name);
return 1;
}
return 0;
}
#ifdef CONFIG_CMD_READ
U_BOOT_CMD(
read, 6, 0, do_read,
read, 6, 0, do_rw,
"Load binary data from a partition",
"<interface> <dev[:part|#partname]> addr blk# cnt"
);
#endif
#ifdef CONFIG_CMD_WRITE
U_BOOT_CMD(
write, 6, 0, do_rw,
"Store binary data to a partition",
"<interface> <dev[:part|#partname]> addr blk# cnt"
);
#endif