[PATCH V2 15/26] misc: S400_API: Update S400 API for buffer dump
Peng Fan (OSS)
peng.fan at oss.nxp.com
Wed Apr 6 08:30:20 CEST 2022
From: Ye Li <ye.li at nxp.com>
Add ahab_dump_buffer API to dump AHAB buffer for debug purpose
Signed-off-by: Ye Li <ye.li at nxp.com>
Signed-off-by: Peng Fan <peng.fan at nxp.com>
---
arch/arm/include/asm/arch-imx8ulp/s400_api.h | 3 +-
drivers/misc/imx8ulp/s400_api.c | 34 ++++++++++++++++++++
2 files changed, 36 insertions(+), 1 deletion(-)
diff --git a/arch/arm/include/asm/arch-imx8ulp/s400_api.h b/arch/arm/include/asm/arch-imx8ulp/s400_api.h
index b788661b098..1856659877e 100644
--- a/arch/arm/include/asm/arch-imx8ulp/s400_api.h
+++ b/arch/arm/include/asm/arch-imx8ulp/s400_api.h
@@ -21,7 +21,7 @@
#define AHAB_WRITE_FUSE_REQ_CID 0xD6
#define AHAB_CAAM_RELEASE_CID 0xD7
-#define S400_MAX_MSG 8U
+#define S400_MAX_MSG 255U
struct imx8ulp_s400_msg {
u8 version;
@@ -39,5 +39,6 @@ int ahab_forward_lifecycle(u16 life_cycle, u32 *response);
int ahab_write_fuse(u16 fuse_id, u32 fuse_val, bool lock, u32 *response);
int ahab_read_common_fuse(u16 fuse_id, u32 *fuse_words, u32 fuse_num, u32 *response);
int ahab_release_caam(u32 core_did, u32 *response);
+int ahab_dump_buffer(u32 *buffer, u32 buffer_length);
#endif
diff --git a/drivers/misc/imx8ulp/s400_api.c b/drivers/misc/imx8ulp/s400_api.c
index dd5f9f25da5..3ffdeb2ad2a 100644
--- a/drivers/misc/imx8ulp/s400_api.c
+++ b/drivers/misc/imx8ulp/s400_api.c
@@ -271,3 +271,37 @@ int ahab_release_caam(u32 core_did, u32 *response)
return ret;
}
+
+int ahab_dump_buffer(u32 *buffer, u32 buffer_length)
+{
+ struct udevice *dev = gd->arch.s400_dev;
+ int size = sizeof(struct imx8ulp_s400_msg);
+ struct imx8ulp_s400_msg msg;
+ int ret, i = 0;
+
+ if (!dev) {
+ printf("s400 dev is not initialized\n");
+ return -ENODEV;
+ }
+
+ msg.version = AHAB_VERSION;
+ msg.tag = AHAB_CMD_TAG;
+ msg.size = 1;
+ msg.command = AHAB_LOG_CID;
+
+ ret = misc_call(dev, false, &msg, size, &msg, size);
+ if (ret) {
+ printf("Error: %s: ret %d, response 0x%x\n",
+ __func__, ret, msg.data[0]);
+
+ return ret;
+ }
+
+ if (buffer) {
+ buffer[i++] = *(u32 *)&msg; /* Need dump the response header */
+ for (; i < buffer_length && i < msg.size; i++)
+ buffer[i] = msg.data[i - 1];
+ }
+
+ return i;
+}
--
2.35.1
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