diff options
Diffstat (limited to 'src/soc')
| -rw-r--r-- | src/soc/intel/common/block/cse/cse.c | 110 | ||||
| -rw-r--r-- | src/soc/intel/common/block/include/intelblocks/cse.h | 19 |
2 files changed, 129 insertions, 0 deletions
diff --git a/src/soc/intel/common/block/cse/cse.c b/src/soc/intel/common/block/cse/cse.c index 01b20501a7..debbf1fbf4 100644 --- a/src/soc/intel/common/block/cse/cse.c +++ b/src/soc/intel/common/block/cse/cse.c @@ -76,6 +76,16 @@ /* RST Origin */ #define GR_ORIGIN_BIOS_POST 2 +#define MKHI_HMRFPO_GROUP_ID 5 + +/* HMRFPO Command Ids */ +#define MKHI_HMRFPO_ENABLE 1 +#define MKHI_HMRFPO_GET_STATUS 3 + +#define ME_HFS_CWS_NORMAL 5 +#define ME_HFS_MODE_NORMAL 0 +#define ME_HFS_TEMP_DISABLE 3 + static struct cse_device { uintptr_t sec_bar; } g_cse; @@ -619,6 +629,106 @@ int send_heci_reset_req_message(uint8_t rst_type) return 0; } +/* Sends HMRFPO Enable command to CSE */ +int send_hmrfpo_enable_msg(void) +{ + struct hmrfpo_enable_msg { + struct mkhi_hdr hdr; + uint32_t nonce[2]; + } __packed; + + /* HMRFPO Enable message */ + struct hmrfpo_enable_msg msg = { + .hdr = { + .group_id = MKHI_HMRFPO_GROUP_ID, + .command = MKHI_HMRFPO_ENABLE, + }, + .nonce = {0}, + }; + + /* HMRFPO Enable response */ + struct hmrfpo_enable_resp { + struct mkhi_hdr hdr; + uint32_t fct_base; + uint32_t fct_limit; + uint8_t status; + uint8_t padding[3]; + } __packed; + + struct hmrfpo_enable_resp resp; + size_t resp_size = sizeof(struct hmrfpo_enable_resp); + union me_hfsts1 hfs1; + + printk(BIOS_DEBUG, "HECI: Send HMRFPO Enable Command\n"); + hfs1.data = me_read_config32(PCI_ME_HFSTS1); + /* + * This command can be run only if: + * - Working state is normal and + * - Operation mode is normal or temporary disable mode. + */ + if (hfs1.fields.working_state != ME_HFS_CWS_NORMAL || + (hfs1.fields.operation_mode != ME_HFS_MODE_NORMAL && + hfs1.fields.operation_mode != ME_HFS_TEMP_DISABLE)) { + printk(BIOS_ERR, "HECI: ME not in required Mode\n"); + goto failed; + } + + if (!heci_send_receive(&msg, sizeof(struct hmrfpo_enable_msg), + &resp, &resp_size)) + goto failed; + + if (resp.hdr.result) { + printk(BIOS_ERR, "HECI: Resp Failed:%d\n", resp.hdr.result); + goto failed; + } + return 1; + +failed: + return 0; +} + +/* + * Sends HMRFPO Get Status command to CSE to get the HMRFPO status. + * The status can be DISABLES/LOCKED/ENABLED + */ +int send_hmrfpo_get_status_msg(void) +{ + struct hmrfpo_get_status_msg { + struct mkhi_hdr hdr; + } __packed; + + struct hmrfpo_get_status_resp { + struct mkhi_hdr hdr; + uint8_t status; + uint8_t padding[3]; + } __packed; + + struct hmrfpo_get_status_msg msg = { + .hdr = { + .group_id = MKHI_HMRFPO_GROUP_ID, + .command = MKHI_HMRFPO_GET_STATUS, + }, + }; + struct hmrfpo_get_status_resp resp; + size_t resp_size = sizeof(struct hmrfpo_get_status_resp); + + printk(BIOS_INFO, "HECI: Sending Get HMRFPO Status Command\n"); + + if (!heci_send_receive(&msg, sizeof(struct hmrfpo_get_status_msg), + &resp, &resp_size)) { + printk(BIOS_ERR, "HECI: HMRFPO send/receive fail\n"); + return -1; + } + + if (resp.hdr.result) { + printk(BIOS_ERR, "HECI: HMRFPO Resp Failed:%d\n", + resp.hdr.result); + return -1; + } + + return resp.status; +} + #if ENV_RAMSTAGE static void update_sec_bar(struct device *dev) diff --git a/src/soc/intel/common/block/include/intelblocks/cse.h b/src/soc/intel/common/block/include/intelblocks/cse.h index 1b08b4d4ea..378f41713c 100644 --- a/src/soc/intel/common/block/include/intelblocks/cse.h +++ b/src/soc/intel/common/block/include/intelblocks/cse.h @@ -113,6 +113,20 @@ uint8_t wait_cse_sec_override_mode(void); */ int send_heci_reset_req_message(uint8_t rst_type); +/* + * Send HMRFPO_ENABLE command. + * returns 0 on failure and 1 on success. + */ +int send_hmrfpo_enable_msg(void); + +/* + * Send HMRFPO_GET_STATUS command. + * returns -1 on failure and 0 (DISABLED)/ 1 (LOCKED)/ 2 (ENABLED) + * on success. + */ +int send_hmrfpo_get_status_msg(void); + + #define BIOS_HOST_ADDR 0x00 #define HECI_MKHI_ADDR 0x07 @@ -121,4 +135,9 @@ int send_heci_reset_req_message(uint8_t rst_type); #define HOST_RESET_ONLY 2 #define CSE_RESET_ONLY 3 +/*HMRFPO Status types */ +#define MKHI_HMRFPO_DISABLED 0 +#define MKHI_HMRFPO_LOCKED 1 +#define MKHI_HMRFPO_ENABLED 2 + #endif // SOC_INTEL_COMMON_MSR_H |