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soc/intel/apollolake: Add support to print ME version 

This change adds support to print ME version if UART_DEBUG is
enabled. Check for UART_DEBUG is necessary because talking to ME to
get the firmware version adds ~0.6 seconds to boot time.

TEST=Verified on octopus that ME version printed is correct.

Change-Id: I41217371558da1af694a2705e005429155d62838
Signed-off-by: Furquan Shaikh <furquan@google.com>
Reviewed-on: https://review.coreboot.org/c/29989
Reviewed-by: Justin TerAvest <teravest@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This commit is contained in:
Furquan Shaikh 2018-11-30 18:32:46 -08:00 committed by Patrick Georgi
parent 34fb497383
commit de60e5b84f
1 changed files with 73 additions and 11 deletions
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84
src/soc/intel/apollolake/cse.c
View File

@ -42,6 +42,9 @@
#define READ_FILE_FLAG_EMULATED (1 << 2)
#define READ_FILE_FLAG_HW (1 << 3)
#define MKHI_GROUP_ID_GEN 0xff
#define GET_FW_VERSION 0x02
#define MCA_MAX_FILE_PATH_SIZE 64
#define FUSE_LOCK_FILE "/fpf/intel/SocCfgLock"
@ -55,6 +58,17 @@ static enum fuse_flash_state {
#define FPF_STATUS_FMAP "FPF_STATUS"
union mkhi_header {
uint32_t data;
struct {
uint32_t group_id: 8;
uint32_t command: 7;
uint32_t is_response: 1;
uint32_t reserved: 8;
uint32_t result: 8;
} __packed fields;
};
/*
* Read file from CSE internal filesystem.
* size is maximum length of provided buffer buff, which is updated with actual
@ -67,17 +81,6 @@ static int read_cse_file(const char *path, void *buff, size_t *size,
int res;
size_t reply_size;
union mkhi_header {
uint32_t data;
struct {
uint32_t group_id: 8;
uint32_t command: 7;
uint32_t is_response: 1;
uint32_t reserved: 8;
uint32_t result: 8;
} __packed fields;
};
struct mca_command {
union mkhi_header mkhi_hdr;
char file_name[MCA_MAX_FILE_PATH_SIZE];
@ -192,6 +195,63 @@ static uint32_t dump_status(int index, int reg_addr)
return reg;
}
static void dump_cse_version(void)
{
int res;
size_t reply_size;
struct fw_version_cmd {
union mkhi_header mkhi_hdr;
} __packed msg;
struct version {
uint16_t minor;
uint16_t major;
uint16_t build;
uint16_t hotfix;
} __packed;
struct fw_version_response {
union mkhi_header mkhi_hdr;
struct version code;
struct version nftp;
struct version fitc;
} __packed rsp;
/*
* Print ME version only if UART debugging is enabled. Else, it takes
* ~0.6 second to talk to ME and get this information.
*/
if (!IS_ENABLED(CONFIG_UART_DEBUG))
return;
msg.mkhi_hdr.fields.group_id = MKHI_GROUP_ID_GEN;
msg.mkhi_hdr.fields.command = GET_FW_VERSION;
res = heci_send(&msg, sizeof(msg), BIOS_HOST_ADDR, HECI_MKHI_ADDR);
if (!res) {
printk(BIOS_ERR, "Failed to send HECI message.\n");
return;
}
reply_size = sizeof(rsp);
res = heci_receive(&rsp, &reply_size);
if (!res) {
printk(BIOS_ERR, "Failed to receive HECI reply.\n");
return;
}
if (rsp.mkhi_hdr.fields.result != 0) {
printk(BIOS_ERR, "Failed to get ME version.\n");
return;
}
printk(BIOS_DEBUG, "ME: Version: %d.%d.%d.%d\n", rsp.code.major,
rsp.code.minor, rsp.code.hotfix, rsp.code.build);
}
static void dump_cse_state(void)
{
uint32_t fwsts1;
@ -222,6 +282,8 @@ static void dump_cse_state(void)
printk(BIOS_DEBUG, "unknown");
}
printk(BIOS_DEBUG, "\n");
dump_cse_version();
}
#define PCR_PSFX_T0_SHDW_PCIEN 0x1C