Le 22/12/2022 à 13:57, Alexey Romanov via groups.io a écrit :
Using this command user can print efuse memory:
$ sm efusedump 0 10 00000000: ff 00 31 00 00 ff 66 00 00 00 ..1...f...
Signed-off-by: Alexey Romanov avromanov@sberdevices.ru Reviewed-by: Mattijs Korpershoek mkorpershoek@baylibre.com
cmd/meson/sm.c | 36 +++++++++++++++++++++++++++++++++++- 1 file changed, 35 insertions(+), 1 deletion(-)
diff --git a/cmd/meson/sm.c b/cmd/meson/sm.c index c2b57707258..d5eb1d6c084 100644 --- a/cmd/meson/sm.c +++ b/cmd/meson/sm.c @@ -5,6 +5,7 @@
- Author: Beniamino Galvani b.galvani@gmail.com
- Author: Vyacheslav Bocharov adeep@lexina.in
- Author: Neil Armstrong narmstrong@baylibre.com
- Author: Alexey Romanov avromanov@sberdevices.ru
*/
#include <command.h>
@@ -119,11 +120,43 @@ static int do_efuse_write(struct cmd_tbl *cmdtp, int flag, int argc, return CMD_RET_SUCCESS; }
+static int do_efuse_dump(struct cmd_tbl *cmdtp, int flag, int argc,
char *const argv[])+{
- ulong offset, size;
- u8 *buffer;
- int ret;
- if (argc != 3)
return CMD_RET_USAGE;- offset = simple_strtoul(argv[1], NULL, 0);
- size = simple_strtoul(argv[2], NULL, 0);
- buffer = malloc(size);
- if (!buffer) {
pr_err("Failed to allocate %lu bytes\n", size);return CMD_RET_FAILURE;- }
- ret = meson_sm_read_efuse(offset, (void *)buffer, size);
- if (ret != size) {
ret = CMD_RET_FAILURE;goto free_buffer;- }
- print_buffer(0, buffer, 1, size, 0);
+free_buffer:
- free(buffer);
- return ret;
+}
static struct cmd_tbl cmd_sm_sub[] = { U_BOOT_CMD_MKENT(serial, 2, 1, do_sm_serial, "", ""), U_BOOT_CMD_MKENT(reboot_reason, 1, 1, do_sm_reboot_reason, "", ""), U_BOOT_CMD_MKENT(efuseread, 4, 1, do_efuse_read, "", ""), U_BOOT_CMD_MKENT(efusewrite, 4, 0, do_efuse_write, "", ""),
U_BOOT_CMD_MKENT(efusedump, 3, 1, do_efuse_dump, "", ""), };
static int do_sm(struct cmd_tbl *cmdtp, int flag, int argc,
@@ -152,5 +185,6 @@ U_BOOT_CMD( "serial <address> - read chip unique id to memory address\n" "sm reboot_reason [name] - get reboot reason and store to environment\n" "sm efuseread <offset> <size> <address> - read efuse to memory address\n"
- "sm efusewrite <offset> <size> <address> - write into efuse from memory address"
- "sm efusewrite <offset> <size> <address> - write into efuse from memory address\n"
- "sm efusedump <offset> <size> - dump efuse data range to console" );
Reviewed-by: Neil Armstrong neil.armstrong@linaro.org