intel/skylake: Display ME firmware status before os boot

Display ME firmware status before os boot. Specifically this
patch reads out the ME hfsts1 and hfsts2 status registers that provide
information about overall ME health before device gets disabled.
This change reused most of the code from bdw me_status implementation.

BUG=chrome-os-partner:47384
BRANCH=glados
TEST=Builds and Boots on FAB4 SKU2/3. Can observe me status table

Change-Id: Ia511c4f336d33a6f3b49a344bfbaea6ed227ffeb
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: a9d0fb411c3921654f0fdcea2a3d4ee601987af2
Original-Change-Id: Ied7e2dcd9a1298a38dfe1eda9296b9ca8eccf6b1
Original-Credits-to: Duncan Laurie <dlaurie@chromium.org>
Original-Signed-off-by: Dhaval Sharma <dhaval.v.sharma@intel.com>
Original-Reviewed-on: https://chromium-review.googlesource.com/323260
Original-Commit-Ready: dhaval v sharma <dhaval.v.sharma@intel.com>
Original-Tested-by: dhaval v sharma <dhaval.v.sharma@intel.com>
Original-Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
Reviewed-on: https://review.coreboot.org/13573
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>

1 files changed, 170 insertions, 0 deletions

diff --git a/src/soc/intel/skylake/include/soc/me.h b/src/soc/intel/skylake/include/soc/me.h
new file mode 100644
index 0000000000..de8a42876a
--- /dev/null
+++ b/src/soc/intel/skylake/include/soc/me.h
@@ -0,0 +1,170 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2008-2009 coresystems GmbH
+ * Copyright (C) 2014 Google Inc.
+ * Copyright (C) 2016 Intel Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#ifndef _SKYLAKE_ME_H_
+#define _SKYLAKE_ME_H_
+
+/*
+ * Management Engine PCI registers
+ */
+#define PCI_ME_HFSTS1		0x40
+#define  ME_HFS_CWS_RESET	0
+#define  ME_HFS_CWS_INIT	1
+#define  ME_HFS_CWS_REC		2
+#define  ME_HFS_CWS_NORMAL	5
+#define  ME_HFS_CWS_WAIT	6
+#define  ME_HFS_CWS_TRANS	7
+#define  ME_HFS_CWS_INVALID	8
+#define  ME_HFS_STATE_PREBOOT	0
+#define  ME_HFS_STATE_M0_UMA	1
+#define  ME_HFS_STATE_M3	4
+#define  ME_HFS_STATE_M0	5
+#define  ME_HFS_STATE_BRINGUP	6
+#define  ME_HFS_STATE_ERROR	7
+#define  ME_HFS_ERROR_NONE	0
+#define  ME_HFS_ERROR_UNCAT	1
+#define  ME_HFS_ERROR_IMAGE	3
+#define  ME_HFS_ERROR_DEBUG	4
+#define  ME_HFS_MODE_NORMAL	0
+#define  ME_HFS_MODE_DEBUG	2
+#define  ME_HFS_MODE_DIS	3
+#define  ME_HFS_MODE_OVER_JMPR	4
+#define  ME_HFS_MODE_OVER_MEI	5
+#define  ME_HFS_BIOS_DRAM_ACK	1
+#define  ME_HFS_ACK_NO_DID	0
+#define  ME_HFS_ACK_RESET	1
+#define  ME_HFS_ACK_PWR_CYCLE	2
+#define  ME_HFS_ACK_S3		3
+#define  ME_HFS_ACK_S4		4
+#define  ME_HFS_ACK_S5		5
+#define  ME_HFS_ACK_GBL_RESET	6
+#define  ME_HFS_ACK_CONTINUE	7
+
+struct me_hfs {
+	u32 working_state: 4;
+	u32 mfg_mode: 1;
+	u32 fpt_bad: 1;
+	u32 operation_state: 3;
+	u32 fw_init_complete: 1;
+	u32 ft_bup_ld_flr: 1;
+	u32 update_in_progress: 1;
+	u32 error_code: 4;
+	u32 operation_mode: 4;
+	u32 reserved: 4;
+	u32 boot_options_present: 1;
+	u32 ack_data: 3;
+	u32 bios_msg_ack: 4;
+} __attribute__ ((packed));
+
+#define PCI_ME_HFSTS2		0x48
+/* Infrastructure Progress Values */
+#define  ME_HFS2_PHASE_ROM		0
+#define  ME_HFS2_PHASE_UKERNEL		2
+#define  ME_HFS2_PHASE_BUP		3
+#define  ME_HFS2_PHASE_HOST_COMM	6
+/* Current State - Based on Infra Progress values. */
+/* ROM State */
+#define  ME_HFS2_STATE_ROM_BEGIN 0
+#define  ME_HFS2_STATE_ROM_DISABLE 6
+/* BUP State */
+#define  ME_HFS2_STATE_BUP_INIT 0
+#define  ME_HFS2_STATE_BUP_DIS_HOST_WAKE 1
+#define  ME_HFS2_STATE_BUP_CG_ENABLE 2
+#define  ME_HFS2_STATE_BUP_PM_HND_EN 3
+#define  ME_HFS2_STATE_BUP_FLOW_DET 4
+#define  ME_HFS2_STATE_BUP_PMC_PATCHING 5
+#define  ME_HFS2_STATE_BUP_GET_FLASH_VSCC 6
+#define  ME_HFS2_STATE_BUP_SET_FLASH_VSCC 7
+#define  ME_HFS2_STATE_BUP_VSCC_ERR 8
+#define  ME_HFS2_STATE_BUP_EFSS_INIT 9
+#define  ME_HFS2_STATE_BUP_CHECK_STRAP 0xa
+#define  ME_HFS2_STATE_BUP_PWR_OK_TIMEOUT 0xb
+#define  ME_HFS2_STATE_BUP_STRAP_DIS 0xc
+#define  ME_HFS2_STATE_BUP_MANUF_OVRD_STRAP 0xd
+#define  ME_HFS2_STATE_BUP_M3 0x11
+#define  ME_HFS2_STATE_BUP_M0 0x12
+#define  ME_HFS2_STATE_BUP_FLOW_DET_ERR 0x13
+#define  ME_HFS2_STATE_BUP_M3_CLK_ERR 0x15
+#define  ME_HFS2_STATE_BUP_CPU_RESET_DID_TIMEOUT_MEM_MISSING 0x17
+#define  ME_HFS2_STATE_BUP_M3_KERN_LOAD 0x18
+#define  ME_HFS2_STATE_BUP_T32_MISSING 0x1c
+#define  ME_HFS2_STATE_BUP_WAIT_DID 0x1f
+#define  ME_HFS2_STATE_BUP_WAIT_DID_FAIL 0x20
+#define  ME_HFS2_STATE_BUP_DID_NO_FAIL 0x21
+#define  ME_HFS2_STATE_BUP_ENABLE_UMA 0x22
+#define  ME_HFS2_STATE_BUP_ENABLE_UMA_ERR 0x23
+#define  ME_HFS2_STATE_BUP_SEND_DID_ACK 0x24
+#define  ME_HFS2_STATE_BUP_SEND_DID_ACK_ERR 0x25
+#define  ME_HFS2_STATE_BUP_M0_CLK 0x26
+#define  ME_HFS2_STATE_BUP_M0_CLK_ERR 0x27
+#define  ME_HFS2_STATE_BUP_TEMP_DIS 0x28
+#define  ME_HFS2_STATE_BUP_M0_KERN_LOAD 0x32
+/* Policy Module State */
+#define  ME_HFS2_STATE_POLICY_ENTRY 0
+#define  ME_HFS2_STATE_POLICY_RCVD_S3 3
+#define  ME_HFS2_STATE_POLICY_RCVD_S4 4
+#define  ME_HFS2_STATE_POLICY_RCVD_S5 5
+#define  ME_HFS2_STATE_POLICY_RCVD_UPD 6
+#define  ME_HFS2_STATE_POLICY_RCVD_PCR 7
+#define  ME_HFS2_STATE_POLICY_RCVD_NPCR 8
+#define  ME_HFS2_STATE_POLICY_RCVD_HOST_WAKE 9
+#define  ME_HFS2_STATE_POLICY_RCVD_AC_DC 0xa
+#define  ME_HFS2_STATE_POLICY_RCVD_DID 0xb
+#define  ME_HFS2_STATE_POLICY_VSCC_NOT_FOUND 0xc
+#define  ME_HFS2_STATE_POLICY_VSCC_INVALID 0xd
+#define  ME_HFS2_STATE_POLICY_FPB_ERR 0xe
+#define  ME_HFS2_STATE_POLICY_DESCRIPTOR_ERR 0xf
+#define  ME_HFS2_STATE_POLICY_VSCC_NO_MATCH 0x10
+/* Current PM Event Values */
+#define  ME_HFS2_PMEVENT_CLEAN_MOFF_MX_WAKE 0
+#define  ME_HFS2_PMEVENT_MOFF_MX_WAKE_ERROR 1
+#define  ME_HFS2_PMEVENT_CLEAN_GLOBAL_RESET 2
+#define  ME_HFS2_PMEVENT_CLEAN_GLOBAL_RESET_ERROR 3
+#define  ME_HFS2_PMEVENT_CLEAN_ME_RESET 4
+#define  ME_HFS2_PMEVENT_ME_RESET_EXCEPTION 5
+#define  ME_HFS2_PMEVENT_PSEUDO_ME_RESET 6
+#define  ME_HFS2_PMEVENT_CM0_CM3 7
+#define  ME_HFS2_PMEVENT_CM3_CM0 8
+#define  ME_HFS2_PMEVENT_NON_PWR_CYCLE_RESET 9
+#define  ME_HFS2_PMEVENT_PWR_CYCLE_RESET_M3 0xa
+#define  ME_HFS2_PMEVENT_PWR_CYCLE_RESET_MOFF 0xb
+#define  ME_HFS2_PMEVENT_CMX_CMOFF 0xc
+#define  ME_HFS2_PMEVENT_CM0_CM0PG 0xd
+#define  ME_HFS2_PMEVENT_CM3_CM3PG 0xe
+#define  ME_HFS2_PMEVENT_CM0PG_CM0 0xf
+
+struct me_hfs2 {
+	u32 reserved1: 3;
+	u32 invoke_mebx: 1;
+	u32 cpu_replaced_sts: 1;
+	u32 reserved2: 1;
+	u32 mfs_failure: 1;
+	u32 warm_reset_request: 1;
+	u32 cpu_replaced_valid: 1;
+	u32 low_power_state: 1;
+	u32 power_gating_ind: 1;
+	u32 reserved3: 1;
+	u32 fw_upd_forced_sb: 1;
+	u32 reserved4: 3;
+	u32 current_state: 8;
+	u32 current_pmevent: 4;
+	u32 progress_code: 4;
+} __attribute__ ((packed));
+
+void intel_me_status(void);
+
+#endif