misc: S400_API: Update S400 API for buffer dump

Add ahab_dump_buffer API to dump AHAB buffer for debug purpose

Signed-off-by: Ye Li <ye.li@nxp.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>

diff --git a/arch/arm/include/asm/arch-imx8ulp/s400_api.h b/arch/arm/include/asm/arch-imx8ulp/s400_api.h
index b788661..1856659 100644 (file)
--- 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 dd5f9f2..3ffdeb2 100644 (file)
--- 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;
+}