Add a simple debug command to dump the content of the otp.
Signed-off-by: Jonas Karlman jonas@kwiboo.se Reviewed-by: Kever Yang kever.yang@rock-chips.com --- v2: - Print 4 bytes instead of one 32-bit word - Collect r-b tag
drivers/misc/rockchip-otp.c | 35 +++++++++++++++++++++++++++++++++++ 1 file changed, 35 insertions(+)
diff --git a/drivers/misc/rockchip-otp.c b/drivers/misc/rockchip-otp.c index 3da99e83179b..c19cd5ce625e 100644 --- a/drivers/misc/rockchip-otp.c +++ b/drivers/misc/rockchip-otp.c @@ -5,6 +5,8 @@
#include <common.h> #include <asm/io.h> +#include <command.h> +#include <display_options.h> #include <dm.h> #include <linux/bitops.h> #include <linux/delay.h> @@ -70,6 +72,39 @@ struct rockchip_otp_data { int block_size; };
+#if defined(DEBUG) +static int dump_otp(struct cmd_tbl *cmdtp, int flag, + int argc, char *const argv[]) +{ + struct udevice *dev; + u8 data[4]; + int ret, i; + + ret = uclass_get_device_by_driver(UCLASS_MISC, + DM_DRIVER_GET(rockchip_otp), &dev); + if (ret) { + printf("%s: no misc-device found\n", __func__); + return 0; + } + + for (i = 0; true; i += sizeof(data)) { + ret = misc_read(dev, i, &data, sizeof(data)); + if (ret < 0) + return 0; + + print_buffer(i, data, 1, sizeof(data), sizeof(data)); + } + + return 0; +} + +U_BOOT_CMD( + dump_otp, 1, 1, dump_otp, + "Dump the content of the otp", + "" +); +#endif + static int rockchip_otp_poll_timeout(struct rockchip_otp_plat *otp, u32 flag, u32 reg) {