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/*
* This file is part of the coreboot project.
*
* Copyright (C) 2014 Google Inc.
*
* 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc.
*/
#include <arch/io.h>
#include <console/console.h>
#include <device/pci.h>
#include <device/pci_ids.h>
#include <stdlib.h>
#include <string.h>
#include <soc/pci_devs.h>
#include <soc/me.h>
#include <delay.h>
static inline void me_read_dword_ptr(void *ptr, int offset)
{
u32 dword = pci_read_config32(PCH_DEV_ME, offset);
memcpy(ptr, &dword, sizeof(dword));
}
#if (CONFIG_DEFAULT_CONSOLE_LOGLEVEL >= BIOS_DEBUG)
/* HFS1[3:0] Current Working State Values */
static const char *me_cws_values[] = {
[ME_HFS_CWS_RESET] = "Reset",
[ME_HFS_CWS_INIT] = "Initializing",
[ME_HFS_CWS_REC] = "Recovery",
[3] = "Unknown (3)",
[4] = "Unknown (4)",
[ME_HFS_CWS_NORMAL] = "Normal",
[ME_HFS_CWS_WAIT] = "Platform Disable Wait",
[ME_HFS_CWS_TRANS] = "OP State Transition",
[ME_HFS_CWS_INVALID] = "Invalid CPU Plugged In",
[9] = "Unknown (9)",
[10] = "Unknown (10)",
[11] = "Unknown (11)",
[12] = "Unknown (12)",
[13] = "Unknown (13)",
[14] = "Unknown (14)",
[15] = "Unknown (15)",
};
/* HFS1[8:6] Current Operation State Values */
static const char *me_opstate_values[] = {
[ME_HFS_STATE_PREBOOT] = "Preboot",
[ME_HFS_STATE_M0_UMA] = "M0 with UMA",
[ME_HFS_STATE_M3] = "M3 without UMA",
[ME_HFS_STATE_M0] = "M0 without UMA",
[ME_HFS_STATE_BRINGUP] = "Bring up",
[ME_HFS_STATE_ERROR] = "M0 without UMA but with error"
};
/* HFS[19:16] Current Operation Mode Values */
static const char *me_opmode_values[] = {
[ME_HFS_MODE_NORMAL] = "Normal",
[ME_HFS_MODE_DEBUG] = "Debug",
[ME_HFS_MODE_DIS] = "Soft Temporary Disable",
[ME_HFS_MODE_OVER_JMPR] = "Security Override via Jumper",
[ME_HFS_MODE_OVER_MEI] = "Security Override via MEI Message"
};
/* HFS[15:12] Error Code Values */
static const char *me_error_values[] = {
[ME_HFS_ERROR_NONE] = "No Error",
[ME_HFS_ERROR_UNCAT] = "Uncategorized Failure",
[ME_HFS_ERROR_IMAGE] = "Image Failure",
[ME_HFS_ERROR_DEBUG] = "Debug Failure"
};
/* HFS2[31:28] ME Progress Code */
static const char *me_progress_values[] = {
[ME_HFS2_PHASE_ROM] = "ROM Phase",
[ME_HFS2_PHASE_BUP] = "BUP Phase",
[ME_HFS2_PHASE_UKERNEL] = "uKernel Phase",
[ME_HFS2_PHASE_POLICY] = "Policy Module",
[ME_HFS2_PHASE_MODULE_LOAD] = "Module Loading",
[ME_HFS2_PHASE_UNKNOWN] = "Unknown",
[ME_HFS2_PHASE_HOST_COMM] = "Host Communication"
};
/* HFS2[27:24] Power Management Event */
static const char *me_pmevent_values[] = {
[ME_HFS2_PMEVENT_CLEAN_MOFF_MX_WAKE] =
"Clean Moff->Mx wake",
[ME_HFS2_PMEVENT_MOFF_MX_WAKE_ERROR] =
"Moff->Mx wake after an error",
[ME_HFS2_PMEVENT_CLEAN_GLOBAL_RESET] =
"Clean global reset",
[ME_HFS2_PMEVENT_CLEAN_GLOBAL_RESET_ERROR] =
"Global reset after an error",
[ME_HFS2_PMEVENT_CLEAN_ME_RESET] =
"Clean Intel ME reset",
[ME_HFS2_PMEVENT_ME_RESET_EXCEPTION] =
"Intel ME reset due to exception",
[ME_HFS2_PMEVENT_PSEUDO_ME_RESET] =
"Pseudo-global reset",
[ME_HFS2_PMEVENT_S0MO_SXM3] =
"S0/M0->Sx/M3",
[ME_HFS2_PMEVENT_SXM3_S0M0] =
"Sx/M3->S0/M0",
[ME_HFS2_PMEVENT_NON_PWR_CYCLE_RESET] =
"Non-power cycle reset",
[ME_HFS2_PMEVENT_PWR_CYCLE_RESET_M3] =
"Power cycle reset through M3",
[ME_HFS2_PMEVENT_PWR_CYCLE_RESET_MOFF] =
"Power cycle reset through Moff",
[ME_HFS2_PMEVENT_SXMX_SXMOFF] =
"Sx/Mx->Sx/Moff"
};
/* Progress Code 0 states */
static const char *me_progress_rom_values[] = {
[ME_HFS2_STATE_ROM_BEGIN] = "BEGIN",
[ME_HFS2_STATE_ROM_DISABLE] = "DISABLE"
};
/* Progress Code 1 states */
static const char *me_progress_bup_values[] = {
[ME_HFS2_STATE_BUP_INIT] =
"Initialization starts",
[ME_HFS2_STATE_BUP_DIS_HOST_WAKE] =
"Disable the host wake event",
[ME_HFS2_STATE_BUP_FLOW_DET] =
"Flow determination start process",
[ME_HFS2_STATE_BUP_VSCC_ERR] =
"Error reading/matching the VSCC table in the descriptor",
[ME_HFS2_STATE_BUP_CHECK_STRAP] =
"Check to see if straps say ME DISABLED",
[ME_HFS2_STATE_BUP_PWR_OK_TIMEOUT] =
"Timeout waiting for PWROK",
[ME_HFS2_STATE_BUP_MANUF_OVRD_STRAP] =
"Possibly handle BUP manufacturing override strap",
[ME_HFS2_STATE_BUP_M3] =
"Bringup in M3",
[ME_HFS2_STATE_BUP_M0] =
"Bringup in M0",
[ME_HFS2_STATE_BUP_FLOW_DET_ERR] =
"Flow detection error",
[ME_HFS2_STATE_BUP_M3_CLK_ERR] =
"M3 clock switching error",
[ME_HFS2_STATE_BUP_CPU_RESET_DID_TIMEOUT_MEM_MISSING] =
"Host error - CPU reset timeout, DID timeout, memory missing",
[ME_HFS2_STATE_BUP_M3_KERN_LOAD] =
"M3 kernel load",
[ME_HFS2_STATE_BUP_T32_MISSING] =
"T34 missing - cannot program ICC",
[ME_HFS2_STATE_BUP_WAIT_DID] =
"Waiting for DID BIOS message",
[ME_HFS2_STATE_BUP_WAIT_DID_FAIL] =
"Waiting for DID BIOS message failure",
[ME_HFS2_STATE_BUP_DID_NO_FAIL] =
"DID reported no error",
[ME_HFS2_STATE_BUP_ENABLE_UMA] =
"Enabling UMA",
[ME_HFS2_STATE_BUP_ENABLE_UMA_ERR] =
"Enabling UMA error",
[ME_HFS2_STATE_BUP_SEND_DID_ACK] =
"Sending DID Ack to BIOS",
[ME_HFS2_STATE_BUP_SEND_DID_ACK_ERR] =
"Sending DID Ack to BIOS error",
[ME_HFS2_STATE_BUP_M0_CLK] =
"Switching clocks in M0",
[ME_HFS2_STATE_BUP_M0_CLK_ERR] =
"Switching clocks in M0 error",
[ME_HFS2_STATE_BUP_TEMP_DIS] =
"ME in temp disable",
[ME_HFS2_STATE_BUP_M0_KERN_LOAD] =
"M0 kernel load",
};
/* Progress Code 3 states */
static const char *me_progress_policy_values[] = {
[ME_HFS2_STATE_POLICY_ENTRY] = "Entry into Policy Module",
[ME_HFS2_STATE_POLICY_RCVD_S3] = "Received S3 entry",
[ME_HFS2_STATE_POLICY_RCVD_S4] = "Received S4 entry",
[ME_HFS2_STATE_POLICY_RCVD_S5] = "Received S5 entry",
[ME_HFS2_STATE_POLICY_RCVD_UPD] = "Received UPD entry",
[ME_HFS2_STATE_POLICY_RCVD_PCR] = "Received PCR entry",
[ME_HFS2_STATE_POLICY_RCVD_NPCR] = "Received NPCR entry",
[ME_HFS2_STATE_POLICY_RCVD_HOST_WAKE] = "Received host wake",
[ME_HFS2_STATE_POLICY_RCVD_AC_DC] = "Received AC<>DC switch",
[ME_HFS2_STATE_POLICY_RCVD_DID] = "Received DRAM Init Done",
[ME_HFS2_STATE_POLICY_VSCC_NOT_FOUND] =
"VSCC Data not found for flash device",
[ME_HFS2_STATE_POLICY_VSCC_INVALID] =
"VSCC Table is not valid",
[ME_HFS2_STATE_POLICY_FPB_ERR] =
"Flash Partition Boundary is outside address space",
[ME_HFS2_STATE_POLICY_DESCRIPTOR_ERR] =
"ME cannot access the chipset descriptor region",
[ME_HFS2_STATE_POLICY_VSCC_NO_MATCH] =
"Required VSCC values for flash parts do not match",
};
void intel_me_status(void)
{
struct me_hfs _hfs, *hfs = &_hfs;
struct me_hfs2 _hfs2, *hfs2 = &_hfs2;
me_read_dword_ptr(hfs, PCI_ME_HFS);
me_read_dword_ptr(hfs2, PCI_ME_HFS2);
/* Check Current States */
printk(BIOS_DEBUG, "ME: FW Partition Table : %s\n",
hfs->fpt_bad ? "BAD" : "OK");
printk(BIOS_DEBUG, "ME: Bringup Loader Failure : %s\n",
hfs->ft_bup_ld_flr ? "YES" : "NO");
printk(BIOS_DEBUG, "ME: Firmware Init Complete : %s\n",
hfs->fw_init_complete ? "YES" : "NO");
printk(BIOS_DEBUG, "ME: Manufacturing Mode : %s\n",
hfs->mfg_mode ? "YES" : "NO");
printk(BIOS_DEBUG, "ME: Boot Options Present : %s\n",
hfs->boot_options_present ? "YES" : "NO");
printk(BIOS_DEBUG, "ME: Update In Progress : %s\n",
hfs->update_in_progress ? "YES" : "NO");
printk(BIOS_DEBUG, "ME: Current Working State : %s\n",
me_cws_values[hfs->working_state]);
printk(BIOS_DEBUG, "ME: Current Operation State : %s\n",
me_opstate_values[hfs->operation_state]);
printk(BIOS_DEBUG, "ME: Current Operation Mode : %s\n",
me_opmode_values[hfs->operation_mode]);
printk(BIOS_DEBUG, "ME: Error Code : %s\n",
me_error_values[hfs->error_code]);
printk(BIOS_DEBUG, "ME: Progress Phase : %s\n",
me_progress_values[hfs2->progress_code]);
printk(BIOS_DEBUG, "ME: Power Management Event : %s\n",
me_pmevent_values[hfs2->current_pmevent]);
printk(BIOS_DEBUG, "ME: Progress Phase State : ");
switch (hfs2->progress_code) {
case ME_HFS2_PHASE_ROM: /* ROM Phase */
printk(BIOS_DEBUG, "%s",
me_progress_rom_values[hfs2->current_state]);
break;
case ME_HFS2_PHASE_UKERNEL: /* uKernel Phase */
printk(BIOS_DEBUG, "0x%02x", hfs2->current_state);
break;
case ME_HFS2_PHASE_BUP: /* Bringup Phase */
if (hfs2->current_state < ARRAY_SIZE(me_progress_bup_values)
&& me_progress_bup_values[hfs2->current_state])
printk(BIOS_DEBUG, "%s",
me_progress_bup_values[hfs2->current_state]);
else
printk(BIOS_DEBUG, "0x%02x", hfs2->current_state);
break;
case ME_HFS2_PHASE_POLICY: /* Policy Module Phase */
if (hfs2->current_state < ARRAY_SIZE(me_progress_policy_values)
&& me_progress_policy_values[hfs2->current_state])
printk(BIOS_DEBUG, "%s",
me_progress_policy_values[hfs2->current_state]);
else
printk(BIOS_DEBUG, "0x%02x", hfs2->current_state);
break;
case ME_HFS2_PHASE_HOST_COMM: /* Host Communication Phase */
if (!hfs2->current_state)
printk(BIOS_DEBUG, "Host communication established");
else
printk(BIOS_DEBUG, "0x%02x", hfs2->current_state);
break;
default:
printk(BIOS_DEBUG, "Unknown phase: 0x%02x state: 0x%02x",
hfs2->progress_code, hfs2->current_state);
}
printk(BIOS_DEBUG, "\n");
}
#endif
void intel_me_hsio_version(uint16_t *version, uint16_t *checksum)
{
int count;
u32 hsiover;
struct me_hfs hfs;
/* Query for HSIO version, overloads H_GS and HFS */
pci_write_config32(PCH_DEV_ME, PCI_ME_H_GS,
ME_HSIO_MESSAGE | ME_HSIO_CMD_GETHSIOVER);
/* Must wait for ME acknowledgement */
for (count = ME_RETRY; count > 0; --count) {
me_read_dword_ptr(&hfs, PCI_ME_HFS);
if (hfs.bios_msg_ack)
break;
udelay(ME_DELAY);
}
if (!count) {
printk(BIOS_ERR, "ERROR: ME failed to respond\n");
return;
}
/* HSIO version should be in HFS_5 */
hsiover = pci_read_config32(PCH_DEV_ME, PCI_ME_HFS5);
*version = hsiover >> 16;
*checksum = hsiover & 0xffff;
printk(BIOS_DEBUG, "ME: HSIO Version : %d (CRC 0x%04x)\n",
*version, *checksum);
/* Reset registers to normal behavior */
pci_write_config32(PCH_DEV_ME, PCI_ME_H_GS,
ME_HSIO_MESSAGE | ME_HSIO_CMD_GETHSIOVER);
}
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