diff options
Diffstat (limited to 'src/soc/intel/common/block/cse/cse.c')
| -rw-r--r-- | src/soc/intel/common/block/cse/cse.c | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/src/soc/intel/common/block/cse/cse.c b/src/soc/intel/common/block/cse/cse.c index 223eab5fb2..01b20501a7 100644 --- a/src/soc/intel/common/block/cse/cse.c +++ b/src/soc/intel/common/block/cse/cse.c @@ -69,10 +69,25 @@ #define HECI_OP_MODE_SEC_OVERRIDE 5 +/* Global Reset Command ID */ +#define MKHI_GLOBAL_RESET_REQ 0xb +#define MKHI_GROUP_ID_CBM 0 + +/* RST Origin */ +#define GR_ORIGIN_BIOS_POST 2 + static struct cse_device { uintptr_t sec_bar; } g_cse; +/* HECI Message Header */ +struct mkhi_hdr { + uint8_t group_id; + uint8_t command:7; + uint8_t is_resp:1; + uint8_t rsvd; + uint8_t result; +} __packed; /* * Initialize the device with provided temporary BAR. If BAR is 0 use a * default. This is intended for pre-mem usage only where BARs haven't been @@ -558,6 +573,52 @@ uint32_t me_read_config32(int offset) return pci_read_config32(PCH_DEV_CSE, offset); } +/* + * Sends GLOBAL_RESET_REQ cmd to CSE.The reset type can be GLOBAL_RESET/ + * HOST_RESET_ONLY/CSE_RESET_ONLY. + */ +int send_heci_reset_req_message(uint8_t rst_type) +{ + int status; + struct mkhi_hdr reply; + struct reset_message { + struct mkhi_hdr hdr; + uint8_t req_origin; + uint8_t reset_type; + } __packed; + struct reset_message msg = { + .hdr = { + .group_id = MKHI_GROUP_ID_CBM, + .command = MKHI_GLOBAL_RESET_REQ, + }, + .req_origin = GR_ORIGIN_BIOS_POST, + .reset_type = rst_type + }; + size_t reply_size; + + if (!((rst_type == GLOBAL_RESET) || + (rst_type == HOST_RESET_ONLY) || (rst_type == CSE_RESET_ONLY))) + return -1; + + heci_reset(); + + reply_size = sizeof(reply); + memset(&reply, 0, reply_size); + + printk(BIOS_DEBUG, "HECI: Global Reset(Type:%d) Command\n", rst_type); + if (rst_type == CSE_RESET_ONLY) + status = heci_send_receive(&msg, sizeof(msg), NULL, 0); + else + status = heci_send_receive(&msg, sizeof(msg), &reply, + &reply_size); + + if (status != 1) + return -1; + + printk(BIOS_DEBUG, "HECI: Global Reset success!\n"); + return 0; +} + #if ENV_RAMSTAGE static void update_sec_bar(struct device *dev) |