diff options
Diffstat (limited to 'resources/coreboot/haswell/patches/0004-haswell-lynxpoint-Add-native-early-ME-init.patch')
| -rw-r--r-- | resources/coreboot/haswell/patches/0004-haswell-lynxpoint-Add-native-early-ME-init.patch | 148 |
1 files changed, 148 insertions, 0 deletions
diff --git a/resources/coreboot/haswell/patches/0004-haswell-lynxpoint-Add-native-early-ME-init.patch b/resources/coreboot/haswell/patches/0004-haswell-lynxpoint-Add-native-early-ME-init.patch new file mode 100644 index 00000000..28dbc02a --- /dev/null +++ b/resources/coreboot/haswell/patches/0004-haswell-lynxpoint-Add-native-early-ME-init.patch @@ -0,0 +1,148 @@ +From 98142e01fc8ebb3b762974e9e4de75e7f5c073b4 Mon Sep 17 00:00:00 2001 +From: Angel Pons <th3fanbus@gmail.com> +Date: Fri, 6 May 2022 22:18:21 +0200 +Subject: [PATCH 04/26] haswell/lynxpoint: Add native early ME init + +Implement native early ME init for Lynx Point. This is only needed when +MRC.bin is not used. + +Change-Id: If416e2078f139f26b4742c564b70e018725bf003 +Signed-off-by: Angel Pons <th3fanbus@gmail.com> +--- + .../haswell/native_raminit/raminit_native.c | 17 ++++++++++- + src/southbridge/intel/lynxpoint/early_me.c | 30 ++++++++++++++++++- + src/southbridge/intel/lynxpoint/me.h | 7 +++-- + 3 files changed, 50 insertions(+), 4 deletions(-) + +diff --git a/src/northbridge/intel/haswell/native_raminit/raminit_native.c b/src/northbridge/intel/haswell/native_raminit/raminit_native.c +index 0938e026e3..6a002548c1 100644 +--- a/src/northbridge/intel/haswell/native_raminit/raminit_native.c ++++ b/src/northbridge/intel/haswell/native_raminit/raminit_native.c +@@ -1,18 +1,24 @@ + /* SPDX-License-Identifier: GPL-2.0-or-later */ + + #include <console/console.h> ++#include <delay.h> + #include <northbridge/intel/haswell/haswell.h> + #include <northbridge/intel/haswell/raminit.h> ++#include <southbridge/intel/lynxpoint/me.h> + #include <types.h> + + static bool early_init_native(int s3resume) + { + printk(BIOS_DEBUG, "Starting native platform initialisation\n"); + ++ intel_early_me_init(); ++ /** TODO: CPU replacement check must be skipped in warm boots and S3 resumes **/ ++ const bool cpu_replaced = !s3resume && intel_early_me_cpu_replacement_check(); ++ + if (!CONFIG(INTEL_LYNXPOINT_LP)) + dmi_early_init(); + +- return false; ++ return cpu_replaced; + } + + void perform_raminit(const int s3resume) +@@ -25,6 +31,15 @@ void perform_raminit(const int s3resume) + + (void)cpu_replaced; + ++ /** TODO: Move after raminit */ ++ if (intel_early_me_uma_size() > 0) { ++ /** TODO: Update status once raminit is implemented **/ ++ uint8_t me_status = ME_INIT_STATUS_ERROR; ++ intel_early_me_init_done(me_status); ++ } ++ ++ intel_early_me_status(); ++ + /** TODO: Implement the required magic **/ + die("NATIVE RAMINIT: More Magic (tm) required.\n"); + } +diff --git a/src/southbridge/intel/lynxpoint/early_me.c b/src/southbridge/intel/lynxpoint/early_me.c +index 947c570e16..07013c5539 100644 +--- a/src/southbridge/intel/lynxpoint/early_me.c ++++ b/src/southbridge/intel/lynxpoint/early_me.c +@@ -1,11 +1,12 @@ + /* SPDX-License-Identifier: GPL-2.0-only */ + + #include <arch/io.h> ++#include <cf9_reset.h> + #include <device/pci_ops.h> + #include <console/console.h> + #include <delay.h> + #include <halt.h> +- ++#include <timer.h> + #include "me.h" + #include "pch.h" + +@@ -60,6 +61,33 @@ int intel_early_me_init(void) + return 0; + } + ++bool intel_early_me_cpu_replacement_check(void) ++{ ++ printk(BIOS_DEBUG, "ME: Checking whether CPU was replaced... "); ++ ++ struct stopwatch timer; ++ stopwatch_init_msecs_expire(&timer, 50); ++ ++ union me_hfs2 hfs2; ++ do { ++ hfs2.raw = pci_read_config32(PCH_ME_DEV, PCI_ME_HFS2); ++ if (stopwatch_expired(&timer)) { ++ /* Assume CPU was replaced just in case */ ++ printk(BIOS_DEBUG, "timed out, assuming CPU was replaced\n"); ++ return true; ++ } ++ udelay(ME_DELAY); ++ } while (!hfs2.cpu_replaced_valid); ++ ++ if (hfs2.warm_reset_request) { ++ printk(BIOS_DEBUG, "warm reset needed for dynamic fusing\n"); ++ system_reset(); ++ } ++ ++ printk(BIOS_DEBUG, "%sreplaced\n", hfs2.cpu_replaced_sts ? "" : "not "); ++ return hfs2.cpu_replaced_sts; ++} ++ + int intel_early_me_uma_size(void) + { + union me_uma uma = { .raw = pci_read_config32(PCH_ME_DEV, PCI_ME_UMA) }; +diff --git a/src/southbridge/intel/lynxpoint/me.h b/src/southbridge/intel/lynxpoint/me.h +index fe8b0260c4..6990322651 100644 +--- a/src/southbridge/intel/lynxpoint/me.h ++++ b/src/southbridge/intel/lynxpoint/me.h +@@ -177,14 +177,16 @@ union me_did { + union me_hfs2 { + struct __packed { + u32 bist_in_progress: 1; +- u32 reserved1: 2; ++ u32 icc_prog_sts: 2; + u32 invoke_mebx: 1; + u32 cpu_replaced_sts: 1; + u32 mbp_rdy: 1; + u32 mfs_failure: 1; + u32 warm_reset_request: 1; + u32 cpu_replaced_valid: 1; +- u32 reserved2: 4; ++ u32 reserved: 2; ++ u32 fw_upd_ipu: 1; ++ u32 reserved2: 1; + u32 mbp_cleared: 1; + u32 reserved3: 2; + u32 current_state: 8; +@@ -338,6 +340,7 @@ void intel_me_status(union me_hfs hfs, union me_hfs2 hfs2); + + void intel_early_me_status(void); + int intel_early_me_init(void); ++bool intel_early_me_cpu_replacement_check(void); + int intel_early_me_uma_size(void); + int intel_early_me_init_done(u8 status); + +-- +2.39.2 + |