commit e48dcb708c97923f39762ab60ad0423767e2b84c
author Arthur Heymans <arthur@aheymans.xyz> Tue May 31 21:48:15 2022 +0200
committer Felix Held <felix-coreboot@felixheld.de> Wed Sep 14 20:29:17 2022 +0000
tree cbbd63d0efdcc85104b34fc94028b600a569d6c1
parent 44807acaefc71cd4985779e742e6791cb9daf65d

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/common/block/cpu/smm/smm_relocate.c

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 f3fcc79..e464cfc 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 @@
 	*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 @@
 	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,
+};