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misc: S400_API: Update S400 API for buffer dump

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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>
This commit is contained in:
Ye Li 2022-04-06 14:30:20 +08:00 committed by Stefano Babic
parent a55ca506c9
commit 203412f66d
2 changed files with 36 additions and 1 deletions
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3
arch/arm/include/asm/arch-imx8ulp/s400_api.h
View File

@ -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

34
drivers/misc/imx8ulp/s400_api.c
View File

@ -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;
}