summaryrefslogtreecommitdiff
path: root/src/soc/intel/baytrail/cpu.c
diff options
context:
space:
mode:
authorKyösti Mälkki <kyosti.malkki@gmail.com>2019-08-14 06:48:28 +0300
committerPatrick Georgi <pgeorgi@google.com>2019-08-27 16:14:48 +0000
commit568a42ab8c975e41ca322e74b92a186c00aff83d (patch)
tree82fda7a2976b0b32f6ec2a11fccf643fd454cf62 /src/soc/intel/baytrail/cpu.c
parent44449192abd612b39c894ef019cfed22e151609f (diff)
downloadcoreboot-568a42ab8c975e41ca322e74b92a186c00aff83d.tar.xz
intel/baytrail: Use smm_subregion()
Change-Id: Ic2677bcf9f2f79c4db725ebcf342a8575ee7bc38 Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/34739 Reviewed-by: Angel Pons <th3fanbus@gmail.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src/soc/intel/baytrail/cpu.c')
-rw-r--r--src/soc/intel/baytrail/cpu.c49
1 files changed, 28 insertions, 21 deletions
diff --git a/src/soc/intel/baytrail/cpu.c b/src/soc/intel/baytrail/cpu.c
index 4cb0a066e5..edc4e83da5 100644
--- a/src/soc/intel/baytrail/cpu.c
+++ b/src/soc/intel/baytrail/cpu.c
@@ -88,13 +88,12 @@ static const struct cpu_driver driver __cpu_driver = {
* MP and SMM loading initialization.
*/
-struct smm_relocation_attrs {
- uint32_t smbase;
- uint32_t smrr_base;
- uint32_t smrr_mask;
+struct smm_relocation_params {
+ msr_t smrr_base;
+ msr_t smrr_mask;
};
-static struct smm_relocation_attrs relo_attrs;
+static struct smm_relocation_params smm_reloc_params;
/* Package level MSRs */
static const struct reg_script package_msr_script[] = {
@@ -140,20 +139,32 @@ static int get_cpu_count(void)
return pattrs->num_cpus;
}
+static void fill_in_relocation_params(struct smm_relocation_params *params)
+{
+ uintptr_t tseg_base;
+ size_t tseg_size;
+
+ /* All range registers are aligned to 4KiB */
+ const u32 rmask = ~((1 << 12) - 1);
+
+ smm_region(&tseg_base, &tseg_size);
+
+ /* SMRR has 32-bits of valid address aligned to 4KiB. */
+ params->smrr_base.lo = (tseg_base & rmask) | MTRR_TYPE_WRBACK;
+ params->smrr_base.hi = 0;
+ params->smrr_mask.lo = (~(tseg_size - 1) & rmask) | MTRR_PHYS_MASK_VALID;
+ params->smrr_mask.hi = 0;
+}
+
static void get_smm_info(uintptr_t *perm_smbase, size_t *perm_smsize,
size_t *smm_save_state_size)
{
- /* All range registers are aligned to 4KiB */
- const uint32_t rmask = ~((1 << 12) - 1);
+ printk(BIOS_DEBUG, "Setting up SMI for CPU\n");
+
+ fill_in_relocation_params(&smm_reloc_params);
- /* Initialize global tracking state. */
- relo_attrs.smbase = (uint32_t)smm_region_start();
- relo_attrs.smrr_base = relo_attrs.smbase | MTRR_TYPE_WRBACK;
- relo_attrs.smrr_mask = ~(smm_region_size() - 1) & rmask;
- relo_attrs.smrr_mask |= MTRR_PHYS_MASK_VALID;
+ smm_subregion(SMM_SUBREGION_HANDLER, perm_smbase, perm_smsize);
- *perm_smbase = relo_attrs.smbase;
- *perm_smsize = smm_region_size() - CONFIG_SMM_RESERVED_SIZE;
*smm_save_state_size = sizeof(em64t100_smm_state_save_area_t);
}
@@ -179,16 +190,12 @@ static void per_cpu_smm_trigger(void)
static void relocation_handler(int cpu, uintptr_t curr_smbase,
uintptr_t staggered_smbase)
{
- msr_t smrr;
+ struct smm_relocation_params *relo_params = &smm_reloc_params;
em64t100_smm_state_save_area_t *smm_state;
/* Set up SMRR. */
- smrr.lo = relo_attrs.smrr_base;
- smrr.hi = 0;
- wrmsr(IA32_SMRR_PHYS_BASE, smrr);
- smrr.lo = relo_attrs.smrr_mask;
- smrr.hi = 0;
- wrmsr(IA32_SMRR_PHYS_MASK, smrr);
+ wrmsr(IA32_SMRR_PHYS_BASE, relo_params->smrr_base);
+ wrmsr(IA32_SMRR_PHYS_MASK, relo_params->smrr_mask);
smm_state = (void *)(SMM_EM64T100_SAVE_STATE_OFFSET + curr_smbase);
smm_state->smbase = staggered_smbase;