cpu/x86/(sipi|smm): Pass on CR3 from ramstage

To allow for more flexibility like generating page tables at runtime or
page tables that are part of the ramstage, add a parameter to
sipi_vector.S and smm_stub.S so that APs use the same page tables as the
BSP during their initialization.

Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Change-Id: I1250ea6f63c65228178ee66e06d988dadfcc2a37
Reviewed-on: https://review.coreboot.org/c/coreboot/+/80335
Reviewed-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Jérémy Compostella <jeremy.compostella@intel.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/src/cpu/x86/mp_init.c b/src/cpu/x86/mp_init.c
index d3af6ecc8f..b336e9f2d1 100644
--- a/src/cpu/x86/mp_init.c
+++ b/src/cpu/x86/mp_init.c
@@ -98,6 +98,7 @@ struct sipi_params {
 	uint32_t msr_table_ptr;
 	uint32_t msr_count;
 	uint32_t c_handler;
+	uint32_t cr3;
 	atomic_t ap_count;
 } __packed;
 
@@ -361,6 +362,7 @@ static atomic_t *load_sipi_vector(struct mp_params *mp_params)
 	else
 		sp->microcode_lock = 0;
 	sp->c_handler = (uintptr_t)&ap_init;
+	sp->cr3 = read_cr3();
 	ap_count = &sp->ap_count;
 	atomic_set(ap_count, 0);
 
@@ -763,6 +765,7 @@ static enum cb_err install_relocation_handler(int num_cpus, size_t save_state_si
 		.cpu_save_state_size = save_state_size,
 		.num_concurrent_save_states = 1,
 		.handler = smm_do_relocation,
+		.cr3 = read_cr3(),
 	};
 
 	if (smm_setup_relocation_handler(&smm_params)) {
@@ -787,6 +790,7 @@ static enum cb_err install_permanent_handler(int num_cpus, uintptr_t smbase,
 		.num_cpus = num_cpus,
 		.cpu_save_state_size = save_state_size,
 		.num_concurrent_save_states = num_cpus,
+		.cr3 = read_cr3(),
 	};
 
 	printk(BIOS_DEBUG, "Installing permanent SMM handler to 0x%08lx\n", smbase);