From e48dcb708c97923f39762ab60ad0423767e2b84c Mon Sep 17 00:00:00 2001
From: Arthur Heymans <arthur@aheymans.xyz>
Date: Tue, 31 May 2022 21:48:15 +0200
Subject: cpu/amd/smm: Move MP & SMM init in a common place

Change-Id: I7c457ab69581f8c29f2d79c054ca3bc7e58a896e
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/64870
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
---
 src/soc/amd/cezanne/cpu.c                        | 35 ++------------------
 src/soc/amd/common/block/cpu/smm/smm_relocate.c  | 28 ++++++++++++++--
 src/soc/amd/common/block/include/amdblocks/smm.h |  2 --
 src/soc/amd/mendocino/cpu.c                      | 34 ++------------------
 src/soc/amd/picasso/cpu.c                        | 38 ++--------------------
 src/soc/amd/stoneyridge/cpu.c                    | 41 +++---------------------
 6 files changed, 38 insertions(+), 140 deletions(-)

(limited to 'src')

diff --git a/src/soc/amd/cezanne/cpu.c b/src/soc/amd/cezanne/cpu.c
index 8b4e347331..8c15b55c40 100644
--- a/src/soc/amd/cezanne/cpu.c
+++ b/src/soc/amd/cezanne/cpu.c
@@ -1,57 +1,28 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
 
+#include <acpi/acpi.h>
 #include <amdblocks/cpu.h>
 #include <amdblocks/iomap.h>
 #include <amdblocks/mca.h>
-#include <amdblocks/reset.h>
-#include <amdblocks/smm.h>
 #include <assert.h>
 #include <console/console.h>
 #include <cpu/amd/microcode.h>
-#include <cpu/amd/mtrr.h>
 #include <cpu/cpu.h>
 #include <cpu/x86/mp.h>
 #include <cpu/x86/mtrr.h>
-#include <cpu/x86/smm.h>
-#include <acpi/acpi.h>
 #include <device/device.h>
 #include <soc/cpu.h>
 #include <soc/iomap.h>
-#include <types.h>
 
 _Static_assert(CONFIG_MAX_CPUS == 16, "Do not override MAX_CPUS. To reduce the number of "
 	"available cores, use the downcore_mode and disable_smt devicetree settings instead.");
 
 /* MP and SMM loading initialization */
 
-/*
- * Do essential initialization tasks before APs can be fired up -
- *
- *  1. Prevent race condition in MTRR solution. Enable MTRRs on the BSP. This
- *  creates the MTRR solution that the APs will use. Otherwise APs will try to
- *  apply the incomplete solution as the BSP is calculating it.
- */
-static void pre_mp_init(void)
-{
-	const msr_t syscfg = rdmsr(SYSCFG_MSR);
-	if (syscfg.lo & SYSCFG_MSR_TOM2WB)
-		x86_setup_mtrrs_with_detect_no_above_4gb();
-	else
-		x86_setup_mtrrs_with_detect();
-	x86_mtrr_check();
-}
-
-static const struct mp_ops mp_ops = {
-	.pre_mp_init = pre_mp_init,
-	.get_cpu_count = get_cpu_count,
-	.get_smm_info = get_smm_info,
-	.relocation_handler = smm_relocation_handler,
-	.post_mp_init = global_smi_enable,
-};
-
 void mp_init_cpus(struct bus *cpu_bus)
 {
-	if (mp_init_with_smm(cpu_bus, &mp_ops) != CB_SUCCESS)
+	extern const struct mp_ops amd_mp_ops_with_smm;
+	if (mp_init_with_smm(cpu_bus, &amd_mp_ops_with_smm) != CB_SUCCESS)
 		die_with_post_code(POST_HW_INIT_FAILURE,
 				"mp_init_with_smm failed. Halting.\n");
 
diff --git a/src/soc/amd/common/block/cpu/smm/smm_relocate.c b/src/soc/amd/common/block/cpu/smm/smm_relocate.c
index f3fcc79a86..e464cfca6d 100644
--- a/src/soc/amd/common/block/cpu/smm/smm_relocate.c
+++ b/src/soc/amd/common/block/cpu/smm/smm_relocate.c
@@ -1,15 +1,31 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
 
+#include <cpu/x86/mtrr.h>
+#include <cpu/x86/mp.h>
+#include <amdblocks/cpu.h>
 #include <amdblocks/smm.h>
 #include <console/console.h>
 #include <cpu/amd/amd64_save_state.h>
 #include <cpu/amd/msr.h>
+#include <cpu/amd/mtrr.h>
 #include <cpu/cpu.h>
 #include <cpu/x86/msr.h>
 #include <cpu/x86/smm.h>
 #include <types.h>
 
-void get_smm_info(uintptr_t *perm_smbase, size_t *perm_smsize, size_t *smm_save_state_size)
+/* AP MTRRs will be synced to the BSP in the SIPI vector so set them up before MP init. */
+static void pre_mp_init(void)
+{
+	const msr_t syscfg = rdmsr(SYSCFG_MSR);
+	if (syscfg.lo & SYSCFG_MSR_TOM2WB)
+		x86_setup_mtrrs_with_detect_no_above_4gb();
+	else
+		x86_setup_mtrrs_with_detect();
+	x86_mtrr_check();
+}
+
+static void get_smm_info(uintptr_t *perm_smbase, size_t *perm_smsize,
+			 size_t *smm_save_state_size)
 {
 	printk(BIOS_DEBUG, "Setting up SMI for CPU\n");
 
@@ -33,7 +49,7 @@ void get_smm_info(uintptr_t *perm_smbase, size_t *perm_smsize, size_t *smm_save_
 	*smm_save_state_size = sizeof(amd64_smm_state_save_area_t);
 }
 
-void smm_relocation_handler(int cpu, uintptr_t curr_smbase, uintptr_t staggered_smbase)
+static void smm_relocation_handler(int cpu, uintptr_t curr_smbase, uintptr_t staggered_smbase)
 {
 	amd64_smm_state_save_area_t *smm_state;
 
@@ -55,3 +71,11 @@ void smm_relocation_handler(int cpu, uintptr_t curr_smbase, uintptr_t staggered_
 	smm_state = (void *)(SMM_AMD64_SAVE_STATE_OFFSET + curr_smbase);
 	smm_state->smbase = staggered_smbase;
 }
+
+const struct mp_ops amd_mp_ops_with_smm = {
+	.pre_mp_init = pre_mp_init,
+	.get_cpu_count = get_cpu_count,
+	.get_smm_info = get_smm_info,
+	.relocation_handler = smm_relocation_handler,
+	.post_mp_init = global_smi_enable,
+};
diff --git a/src/soc/amd/common/block/include/amdblocks/smm.h b/src/soc/amd/common/block/include/amdblocks/smm.h
index 7fa8648ba6..f0a06bf015 100644
--- a/src/soc/amd/common/block/include/amdblocks/smm.h
+++ b/src/soc/amd/common/block/include/amdblocks/smm.h
@@ -6,8 +6,6 @@
 #include <cpu/x86/msr.h>
 #include <types.h>
 
-void get_smm_info(uintptr_t *perm_smbase, size_t *perm_smsize, size_t *smm_save_state_size);
-void smm_relocation_handler(int cpu, uintptr_t curr_smbase, uintptr_t staggered_smbase);
 void *get_smi_source_handler(int source);
 void handle_smi_gsmi(void);
 void handle_smi_store(void);
diff --git a/src/soc/amd/mendocino/cpu.c b/src/soc/amd/mendocino/cpu.c
index a0aa05ccbd..bee4207600 100644
--- a/src/soc/amd/mendocino/cpu.c
+++ b/src/soc/amd/mendocino/cpu.c
@@ -6,55 +6,25 @@
 #include <amdblocks/cpu.h>
 #include <amdblocks/iomap.h>
 #include <amdblocks/mca.h>
-#include <amdblocks/reset.h>
-#include <amdblocks/smm.h>
-#include <assert.h>
 #include <console/console.h>
 #include <cpu/amd/microcode.h>
-#include <cpu/amd/mtrr.h>
 #include <cpu/cpu.h>
 #include <cpu/x86/mp.h>
 #include <cpu/x86/mtrr.h>
-#include <cpu/x86/smm.h>
 #include <acpi/acpi.h>
 #include <device/device.h>
 #include <soc/cpu.h>
 #include <soc/iomap.h>
-#include <types.h>
 
 _Static_assert(CONFIG_MAX_CPUS == 8, "Do not override MAX_CPUS. To reduce the number of "
 	"available cores, use the downcore_mode and disable_smt devicetree settings instead.");
 
 /* MP and SMM loading initialization */
 
-/*
- * Do essential initialization tasks before APs can be fired up -
- *
- *  1. Prevent race condition in MTRR solution. Enable MTRRs on the BSP. This
- *  creates the MTRR solution that the APs will use. Otherwise APs will try to
- *  apply the incomplete solution as the BSP is calculating it.
- */
-static void pre_mp_init(void)
-{
-	const msr_t syscfg = rdmsr(SYSCFG_MSR);
-	if (syscfg.lo & SYSCFG_MSR_TOM2WB)
-		x86_setup_mtrrs_with_detect_no_above_4gb();
-	else
-		x86_setup_mtrrs_with_detect();
-	x86_mtrr_check();
-}
-
-static const struct mp_ops mp_ops = {
-	.pre_mp_init = pre_mp_init,
-	.get_cpu_count = get_cpu_count,
-	.get_smm_info = get_smm_info,
-	.relocation_handler = smm_relocation_handler,
-	.post_mp_init = global_smi_enable,
-};
-
 void mp_init_cpus(struct bus *cpu_bus)
 {
-	if (mp_init_with_smm(cpu_bus, &mp_ops) != CB_SUCCESS)
+	extern const struct mp_ops amd_mp_ops_with_smm;
+	if (mp_init_with_smm(cpu_bus, &amd_mp_ops_with_smm) != CB_SUCCESS)
 		die_with_post_code(POST_HW_INIT_FAILURE,
 				"mp_init_with_smm failed. Halting.\n");
 
diff --git a/src/soc/amd/picasso/cpu.c b/src/soc/amd/picasso/cpu.c
index 08447e9be3..47c71ab139 100644
--- a/src/soc/amd/picasso/cpu.c
+++ b/src/soc/amd/picasso/cpu.c
@@ -4,58 +4,24 @@
 #include <amdblocks/cpu.h>
 #include <amdblocks/iomap.h>
 #include <amdblocks/mca.h>
-#include <amdblocks/reset.h>
-#include <amdblocks/smm.h>
-#include <assert.h>
 #include <console/console.h>
 #include <cpu/amd/microcode.h>
-#include <cpu/amd/mtrr.h>
 #include <cpu/cpu.h>
 #include <cpu/x86/mp.h>
-#include <cpu/x86/msr.h>
 #include <cpu/x86/mtrr.h>
-#include <cpu/x86/smm.h>
 #include <device/device.h>
-#include <device/pci_ops.h>
 #include <soc/cpu.h>
 #include <soc/iomap.h>
-#include <soc/pci_devs.h>
-#include <soc/smi.h>
-#include <types.h>
 
 _Static_assert(CONFIG_MAX_CPUS == 8, "Do not override MAX_CPUS. To reduce the number of "
 	"available cores, use the downcore_mode and disable_smt devicetree settings instead.");
 
 /* MP and SMM loading initialization. */
 
-/*
- * Do essential initialization tasks before APs can be fired up -
- *
- *  1. Prevent race condition in MTRR solution. Enable MTRRs on the BSP. This
- *  creates the MTRR solution that the APs will use. Otherwise APs will try to
- *  apply the incomplete solution as the BSP is calculating it.
- */
-static void pre_mp_init(void)
-{
-	const msr_t syscfg = rdmsr(SYSCFG_MSR);
-	if (syscfg.lo & SYSCFG_MSR_TOM2WB)
-		x86_setup_mtrrs_with_detect_no_above_4gb();
-	else
-		x86_setup_mtrrs_with_detect();
-	x86_mtrr_check();
-}
-
-static const struct mp_ops mp_ops = {
-	.pre_mp_init = pre_mp_init,
-	.get_cpu_count = get_cpu_count,
-	.get_smm_info = get_smm_info,
-	.relocation_handler = smm_relocation_handler,
-	.post_mp_init = global_smi_enable,
-};
-
 void mp_init_cpus(struct bus *cpu_bus)
 {
-	if (mp_init_with_smm(cpu_bus, &mp_ops) != CB_SUCCESS)
+	extern const struct mp_ops amd_mp_ops_with_smm;
+	if (mp_init_with_smm(cpu_bus, &amd_mp_ops_with_smm) != CB_SUCCESS)
 		die_with_post_code(POST_HW_INIT_FAILURE,
 				"mp_init_with_smm failed. Halting.\n");
 
diff --git a/src/soc/amd/stoneyridge/cpu.c b/src/soc/amd/stoneyridge/cpu.c
index e8519f8eae..8e44ede39e 100644
--- a/src/soc/amd/stoneyridge/cpu.c
+++ b/src/soc/amd/stoneyridge/cpu.c
@@ -4,56 +4,25 @@
 #include <amdblocks/iomap.h>
 #include <amdblocks/mca.h>
 #include <amdblocks/reset.h>
-#include <amdblocks/smm.h>
-#include <console/console.h>
 #include <cpu/amd/msr.h>
-#include <cpu/amd/mtrr.h>
 #include <cpu/cpu.h>
 #include <cpu/x86/mp.h>
-#include <cpu/x86/msr.h>
 #include <cpu/x86/mtrr.h>
-#include <cpu/x86/smm.h>
+#include <cpu/x86/msr.h>
 #include <device/device.h>
 #include <device/pci_ops.h>
+#include <soc/pci_devs.h>
 #include <soc/cpu.h>
 #include <soc/iomap.h>
-#include <soc/northbridge.h>
-#include <soc/pci_devs.h>
-#include <soc/smi.h>
-#include <types.h>
+#include <console/console.h>
 
 /*
  * MP and SMM loading initialization.
  */
-
-/*
- * Do essential initialization tasks before APs can be fired up -
- *
- *  1. Prevent race condition in MTRR solution. Enable MTRRs on the BSP. This
- *  creates the MTRR solution that the APs will use. Otherwise APs will try to
- *  apply the incomplete solution as the BSP is calculating it.
- */
-static void pre_mp_init(void)
-{
-	const msr_t syscfg = rdmsr(SYSCFG_MSR);
-	if (syscfg.lo & SYSCFG_MSR_TOM2WB)
-		x86_setup_mtrrs_with_detect_no_above_4gb();
-	else
-		x86_setup_mtrrs_with_detect();
-	x86_mtrr_check();
-}
-
-static const struct mp_ops mp_ops = {
-	.pre_mp_init = pre_mp_init,
-	.get_cpu_count = get_cpu_count,
-	.get_smm_info = get_smm_info,
-	.relocation_handler = smm_relocation_handler,
-	.post_mp_init = global_smi_enable,
-};
-
 void mp_init_cpus(struct bus *cpu_bus)
 {
-	if (mp_init_with_smm(cpu_bus, &mp_ops) != CB_SUCCESS)
+	extern const struct mp_ops amd_mp_ops_with_smm;
+	if (mp_init_with_smm(cpu_bus, &amd_mp_ops_with_smm) != CB_SUCCESS)
 		die_with_post_code(POST_HW_INIT_FAILURE,
 				"mp_init_with_smm failed. Halting.\n");
 
-- 
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