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-rw-r--r--config/coreboot/haswell/patches/0008-nb-intel-haswell-Add-native-raminit-scaffolding.patch407
1 files changed, 0 insertions, 407 deletions
diff --git a/config/coreboot/haswell/patches/0008-nb-intel-haswell-Add-native-raminit-scaffolding.patch b/config/coreboot/haswell/patches/0008-nb-intel-haswell-Add-native-raminit-scaffolding.patch
deleted file mode 100644
index 6df828eb..00000000
--- a/config/coreboot/haswell/patches/0008-nb-intel-haswell-Add-native-raminit-scaffolding.patch
+++ /dev/null
@@ -1,407 +0,0 @@
-From 46cdec8cbce15ca11ad9a49a3ee415a78f781997 Mon Sep 17 00:00:00 2001
-From: Angel Pons <th3fanbus@gmail.com>
-Date: Sat, 7 May 2022 00:26:10 +0200
-Subject: [PATCH 08/26] nb/intel/haswell: Add native raminit scaffolding
-
-Implement some scaffolding for Haswell native raminit, like bootmode
-selection, handling of MRC cache and CPU detection.
-
-Change-Id: Icd96649fa045ea7f0f32ae9bfe1e60498d93975b
-Signed-off-by: Angel Pons <th3fanbus@gmail.com>
----
- .../intel/haswell/native_raminit/Makefile.inc | 1 +
- .../haswell/native_raminit/raminit_main.c | 104 ++++++++++
- .../haswell/native_raminit/raminit_native.c | 189 +++++++++++++++++-
- .../haswell/native_raminit/raminit_native.h | 34 ++++
- 4 files changed, 322 insertions(+), 6 deletions(-)
- create mode 100644 src/northbridge/intel/haswell/native_raminit/raminit_main.c
- create mode 100644 src/northbridge/intel/haswell/native_raminit/raminit_native.h
-
-diff --git a/src/northbridge/intel/haswell/native_raminit/Makefile.inc b/src/northbridge/intel/haswell/native_raminit/Makefile.inc
-index 8cfb4fb33e..90af951c5a 100644
---- a/src/northbridge/intel/haswell/native_raminit/Makefile.inc
-+++ b/src/northbridge/intel/haswell/native_raminit/Makefile.inc
-@@ -1,3 +1,4 @@
- ## SPDX-License-Identifier: GPL-2.0-or-later
-
-+romstage-y += raminit_main.c
- romstage-y += raminit_native.c
-diff --git a/src/northbridge/intel/haswell/native_raminit/raminit_main.c b/src/northbridge/intel/haswell/native_raminit/raminit_main.c
-new file mode 100644
-index 0000000000..9b42c25b40
---- /dev/null
-+++ b/src/northbridge/intel/haswell/native_raminit/raminit_main.c
-@@ -0,0 +1,104 @@
-+/* SPDX-License-Identifier: GPL-2.0-or-later */
-+
-+#include <assert.h>
-+#include <console/console.h>
-+#include <cpu/intel/haswell/haswell.h>
-+#include <delay.h>
-+#include <device/pci_ops.h>
-+#include <northbridge/intel/haswell/chip.h>
-+#include <northbridge/intel/haswell/haswell.h>
-+#include <northbridge/intel/haswell/raminit.h>
-+#include <string.h>
-+#include <types.h>
-+
-+#include "raminit_native.h"
-+
-+struct task_entry {
-+ enum raminit_status (*task)(struct sysinfo *);
-+ bool is_enabled;
-+ const char *name;
-+};
-+
-+static const struct task_entry cold_boot[] = {
-+};
-+
-+/* Return a generic stepping value to make stepping checks simpler */
-+static enum generic_stepping get_stepping(const uint32_t cpuid)
-+{
-+ switch (cpuid) {
-+ case CPUID_HASWELL_A0:
-+ die("Haswell stepping A0 is not supported\n");
-+ case CPUID_HASWELL_B0:
-+ case CPUID_HASWELL_ULT_B0:
-+ case CPUID_CRYSTALWELL_B0:
-+ return STEPPING_B0;
-+ case CPUID_HASWELL_C0:
-+ case CPUID_HASWELL_ULT_C0:
-+ case CPUID_CRYSTALWELL_C0:
-+ return STEPPING_C0;
-+ default:
-+ /** TODO: Add Broadwell support someday **/
-+ die("Unknown CPUID 0x%x\n", cpuid);
-+ }
-+}
-+
-+static void initialize_ctrl(struct sysinfo *ctrl)
-+{
-+ const struct northbridge_intel_haswell_config *cfg = config_of_soc();
-+ const enum raminit_boot_mode bootmode = ctrl->bootmode;
-+
-+ memset(ctrl, 0, sizeof(*ctrl));
-+
-+ ctrl->cpu = cpu_get_cpuid();
-+ ctrl->stepping = get_stepping(ctrl->cpu);
-+ ctrl->dq_pins_interleaved = cfg->dq_pins_interleaved;
-+ ctrl->bootmode = bootmode;
-+}
-+
-+static enum raminit_status try_raminit(struct sysinfo *ctrl)
-+{
-+ const struct task_entry *const schedule = cold_boot;
-+ const size_t length = ARRAY_SIZE(cold_boot);
-+
-+ enum raminit_status status = RAMINIT_STATUS_UNSPECIFIED_ERROR;
-+
-+ for (size_t i = 0; i < length; i++) {
-+ const struct task_entry *const entry = &schedule[i];
-+ assert(entry);
-+ assert(entry->name);
-+ if (!entry->is_enabled)
-+ continue;
-+
-+ assert(entry->task);
-+ printk(RAM_DEBUG, "\nExecuting raminit task %s\n", entry->name);
-+ status = entry->task(ctrl);
-+ printk(RAM_DEBUG, "\n");
-+ if (status) {
-+ printk(BIOS_ERR, "raminit failed on step %s\n", entry->name);
-+ break;
-+ }
-+ }
-+
-+ return status;
-+}
-+
-+void raminit_main(const enum raminit_boot_mode bootmode)
-+{
-+ /*
-+ * The mighty_ctrl struct. Will happily nuke the pre-RAM stack
-+ * if left unattended. Make it static and pass pointers to it.
-+ */
-+ static struct sysinfo mighty_ctrl;
-+
-+ mighty_ctrl.bootmode = bootmode;
-+ initialize_ctrl(&mighty_ctrl);
-+
-+ /** TODO: Try more than once **/
-+ enum raminit_status status = try_raminit(&mighty_ctrl);
-+
-+ if (status != RAMINIT_STATUS_SUCCESS)
-+ die("Memory initialization was met with utmost failure and misery\n");
-+
-+ /** TODO: Implement the required magic **/
-+ die("NATIVE RAMINIT: More Magic (tm) required.\n");
-+}
-diff --git a/src/northbridge/intel/haswell/native_raminit/raminit_native.c b/src/northbridge/intel/haswell/native_raminit/raminit_native.c
-index b6efb6b40d..0869db3902 100644
---- a/src/northbridge/intel/haswell/native_raminit/raminit_native.c
-+++ b/src/northbridge/intel/haswell/native_raminit/raminit_native.c
-@@ -1,13 +1,45 @@
- /* SPDX-License-Identifier: GPL-2.0-or-later */
-
-+#include <arch/cpu.h>
-+#include <assert.h>
-+#include <cbmem.h>
-+#include <cf9_reset.h>
- #include <console/console.h>
-+#include <cpu/x86/msr.h>
- #include <delay.h>
-+#include <device/pci_ops.h>
-+#include <mrc_cache.h>
- #include <northbridge/intel/haswell/haswell.h>
- #include <northbridge/intel/haswell/raminit.h>
- #include <southbridge/intel/lynxpoint/me.h>
- #include <southbridge/intel/lynxpoint/pch.h>
- #include <types.h>
-
-+#include "raminit_native.h"
-+
-+static void wait_txt_clear(void)
-+{
-+ const struct cpuid_result cpuid = cpuid_ext(1, 0);
-+
-+ /* Check if TXT is supported */
-+ if (!(cpuid.ecx & BIT(6)))
-+ return;
-+
-+ /* Some TXT public bit */
-+ if (!(read32p(0xfed30010) & 1))
-+ return;
-+
-+ /* Wait for TXT clear */
-+ do {} while (!(read8p(0xfed40000) & (1 << 7)));
-+}
-+
-+static enum raminit_boot_mode get_boot_mode(void)
-+{
-+ const uint16_t pmcon_2 = pci_read_config16(PCH_LPC_DEV, GEN_PMCON_2);
-+ const uint16_t bitmask = GEN_PMCON_2_DISB | GEN_PMCON_2_MEM_SR;
-+ return (pmcon_2 & bitmask) == bitmask ? BOOTMODE_WARM : BOOTMODE_COLD;
-+}
-+
- static bool early_init_native(int s3resume)
- {
- printk(BIOS_DEBUG, "Starting native platform initialisation\n");
-@@ -24,6 +56,120 @@ static bool early_init_native(int s3resume)
- return cpu_replaced;
- }
-
-+#define MRC_CACHE_VERSION 1
-+
-+struct mrc_data {
-+ const void *buffer;
-+ size_t buffer_len;
-+};
-+
-+static void save_mrc_data(struct mrc_data *md)
-+{
-+ mrc_cache_stash_data(MRC_TRAINING_DATA, MRC_CACHE_VERSION, md->buffer, md->buffer_len);
-+}
-+
-+static struct mrc_data prepare_mrc_cache(void)
-+{
-+ struct mrc_data md = {0};
-+ md.buffer = mrc_cache_current_mmap_leak(MRC_TRAINING_DATA,
-+ MRC_CACHE_VERSION,
-+ &md.buffer_len);
-+ return md;
-+}
-+
-+static const char *const bm_names[] = {
-+ "BOOTMODE_COLD",
-+ "BOOTMODE_WARM",
-+ "BOOTMODE_S3",
-+ "BOOTMODE_FAST",
-+};
-+
-+static void clear_disb(void)
-+{
-+ pci_and_config16(PCH_LPC_DEV, GEN_PMCON_2, ~GEN_PMCON_2_DISB);
-+}
-+
-+static void raminit_reset(void)
-+{
-+ clear_disb();
-+ system_reset();
-+}
-+
-+static enum raminit_boot_mode do_actual_raminit(
-+ struct mrc_data *md,
-+ const bool s3resume,
-+ const bool cpu_replaced,
-+ const enum raminit_boot_mode orig_bootmode)
-+{
-+ enum raminit_boot_mode bootmode = orig_bootmode;
-+
-+ bool save_data_valid = md->buffer && md->buffer_len == USHRT_MAX; /** TODO: sizeof() **/
-+
-+ if (s3resume) {
-+ if (bootmode == BOOTMODE_COLD) {
-+ printk(BIOS_EMERG, "Memory may not be in self-refresh for S3 resume\n");
-+ printk(BIOS_EMERG, "S3 resume and cold boot are mutually exclusive\n");
-+ raminit_reset();
-+ }
-+ /* Only a true mad hatter would replace a CPU in S3 */
-+ if (cpu_replaced) {
-+ printk(BIOS_EMERG, "Oh no, CPU was replaced during S3\n");
-+ /*
-+ * No reason to continue, memory consistency is most likely lost
-+ * and ME will probably request a reset through DID response too.
-+ */
-+ /** TODO: Figure out why past self commented this out **/
-+ //raminit_reset();
-+ }
-+ bootmode = BOOTMODE_S3;
-+ if (!save_data_valid) {
-+ printk(BIOS_EMERG, "No training data, S3 resume is impossible\n");
-+ /* Failed S3 resume, reset to come up cleanly */
-+ raminit_reset();
-+ }
-+ }
-+ if (!s3resume && cpu_replaced) {
-+ printk(BIOS_NOTICE, "CPU was replaced, forcing a cold boot\n");
-+ /*
-+ * Looks like the ME will get angry if raminit takes too long.
-+ * It will report that the CPU has been replaced on next boot.
-+ * Try to continue anyway. This should not happen in most cases.
-+ */
-+ /** TODO: Figure out why past self commented this out **/
-+ //save_data_valid = false;
-+ }
-+ if (bootmode == BOOTMODE_COLD) {
-+ /* If possible, promote to a fast boot */
-+ if (save_data_valid)
-+ bootmode = BOOTMODE_FAST;
-+
-+ clear_disb();
-+ } else if (bootmode == BOOTMODE_WARM) {
-+ /* If a warm reset happened before raminit is done, force a cold boot */
-+ if (mchbar_read32(SSKPD) == 0 && mchbar_read32(SSKPD + 4) == 0) {
-+ printk(BIOS_NOTICE, "Warm reset occurred early in cold boot\n");
-+ save_data_valid = false;
-+ }
-+ if (!save_data_valid)
-+ bootmode = BOOTMODE_COLD;
-+ }
-+ assert(save_data_valid != (bootmode == BOOTMODE_COLD));
-+ if (save_data_valid) {
-+ printk(BIOS_INFO, "Using cached memory parameters\n");
-+ die("RAMINIT: Fast boot is not yet implemented\n");
-+ }
-+ printk(RAM_DEBUG, "Initial bootmode: %s\n", bm_names[orig_bootmode]);
-+ printk(RAM_DEBUG, "Current bootmode: %s\n", bm_names[bootmode]);
-+
-+ /*
-+ * And now, the actual memory initialization thing.
-+ */
-+ printk(RAM_DEBUG, "\nStarting native raminit\n");
-+ raminit_main(bootmode);
-+
-+ return bootmode;
-+}
-+
- void perform_raminit(const int s3resume)
- {
- /*
-@@ -32,17 +178,48 @@ void perform_raminit(const int s3resume)
- */
- const bool cpu_replaced = early_init_native(s3resume);
-
-- (void)cpu_replaced;
-+ wait_txt_clear();
-+ wrmsr(0x2e6, (msr_t) {.lo = 0, .hi = 0});
-+
-+ const enum raminit_boot_mode orig_bootmode = get_boot_mode();
-+
-+ struct mrc_data md = prepare_mrc_cache();
-+
-+ const enum raminit_boot_mode bootmode =
-+ do_actual_raminit(&md, s3resume, cpu_replaced, orig_bootmode);
-+
-+ /** TODO: report_memory_config **/
-
-- /** 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;
-+ /*
-+ * The 'other' success value is to report loss of memory
-+ * consistency to ME if warm boot was downgraded to cold.
-+ */
-+ uint8_t me_status;
-+ if (BOOTMODE_WARM == orig_bootmode && BOOTMODE_COLD == bootmode)
-+ me_status = ME_INIT_STATUS_SUCCESS_OTHER;
-+ else
-+ me_status = ME_INIT_STATUS_SUCCESS;
-+
-+ /** TODO: Remove this once raminit is implemented **/
-+ me_status = ME_INIT_STATUS_ERROR;
- intel_early_me_init_done(me_status);
- }
-
-+ post_code(0x3b);
-+
- intel_early_me_status();
-
-- /** TODO: Implement the required magic **/
-- die("NATIVE RAMINIT: More Magic (tm) required.\n");
-+ const bool cbmem_was_initted = !cbmem_recovery(s3resume);
-+ if (s3resume && !cbmem_was_initted) {
-+ /* Failed S3 resume, reset to come up cleanly */
-+ printk(BIOS_CRIT, "Failed to recover CBMEM in S3 resume.\n");
-+ system_reset();
-+ }
-+
-+ /* Save training data on non-S3 resumes */
-+ if (!s3resume)
-+ save_mrc_data(&md);
-+
-+ /** TODO: setup_sdram_meminfo **/
- }
-diff --git a/src/northbridge/intel/haswell/native_raminit/raminit_native.h b/src/northbridge/intel/haswell/native_raminit/raminit_native.h
-new file mode 100644
-index 0000000000..885f0184f4
---- /dev/null
-+++ b/src/northbridge/intel/haswell/native_raminit/raminit_native.h
-@@ -0,0 +1,34 @@
-+/* SPDX-License-Identifier: GPL-2.0-or-later */
-+
-+#ifndef HASWELL_RAMINIT_NATIVE_H
-+#define HASWELL_RAMINIT_NATIVE_H
-+
-+enum raminit_boot_mode {
-+ BOOTMODE_COLD,
-+ BOOTMODE_WARM,
-+ BOOTMODE_S3,
-+ BOOTMODE_FAST,
-+};
-+
-+enum raminit_status {
-+ RAMINIT_STATUS_SUCCESS = 0,
-+ RAMINIT_STATUS_UNSPECIFIED_ERROR, /** TODO: Deprecated in favor of specific values **/
-+};
-+
-+enum generic_stepping {
-+ STEPPING_A0 = 1,
-+ STEPPING_B0 = 2,
-+ STEPPING_C0 = 3,
-+};
-+
-+struct sysinfo {
-+ enum raminit_boot_mode bootmode;
-+ enum generic_stepping stepping;
-+ uint32_t cpu; /* CPUID value */
-+
-+ bool dq_pins_interleaved;
-+};
-+
-+void raminit_main(enum raminit_boot_mode bootmode);
-+
-+#endif
---
-2.39.2
-
generated by cgit v1.2.1 (git 2.18.0) at 2024-05-18 16:01:25 +0000