From d53fd704f252ffde35c8bf2f2b16260edce76e79 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Ky=C3=B6sti=20M=C3=A4lkki?= Date: Wed, 14 Aug 2019 06:25:55 +0300 Subject: intel/smm/gen1: Use smm_subregion() MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Change-Id: I371ed41f485b3143e47f091681198d6674928897 Signed-off-by: Kyösti Mälkki Reviewed-on: https://review.coreboot.org/c/coreboot/+/34740 Reviewed-by: Angel Pons Tested-by: build bot (Jenkins) --- src/cpu/intel/smm/gen1/smmrelocate.c | 71 +++++++++++++----------------------- 1 file changed, 25 insertions(+), 46 deletions(-) (limited to 'src/cpu/intel/smm/gen1') diff --git a/src/cpu/intel/smm/gen1/smmrelocate.c b/src/cpu/intel/smm/gen1/smmrelocate.c index 9b0175d82f..0a477bb6c6 100644 --- a/src/cpu/intel/smm/gen1/smmrelocate.c +++ b/src/cpu/intel/smm/gen1/smmrelocate.c @@ -43,10 +43,8 @@ struct smm_relocation_params { - u32 smram_base; - u32 smram_size; - u32 ied_base; - u32 ied_size; + uintptr_t ied_base; + size_t ied_size; msr_t smrr_base; msr_t smrr_mask; }; @@ -103,50 +101,31 @@ static void write_smrr(struct smm_relocation_params *relo_params) 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); - const u32 tsegmb = northbridge_get_tseg_base(); - /* TSEG base is usually aligned down (to 8MiB). So we can't - derive the TSEG size from the distance to GTT but use the - configuration value instead. */ - const u32 tseg_size = northbridge_get_tseg_size(); - - params->smram_base = tsegmb; - params->smram_size = tseg_size; - if (CONFIG_IED_REGION_SIZE != 0) { - ASSERT(params->smram_size > CONFIG_IED_REGION_SIZE); - params->smram_size -= CONFIG_IED_REGION_SIZE; - params->ied_base = tsegmb + tseg_size - CONFIG_IED_REGION_SIZE; - params->ied_size = CONFIG_IED_REGION_SIZE; - } + smm_region(&tseg_base, &tseg_size); - /* Adjust available SMM handler memory size. */ - if (CONFIG(TSEG_STAGE_CACHE)) { - ASSERT(params->smram_size > CONFIG_SMM_RESERVED_SIZE); - params->smram_size -= CONFIG_SMM_RESERVED_SIZE; - } - - if (IS_ALIGNED(tsegmb, tseg_size)) { - /* SMRR has 32-bits of valid address aligned to 4KiB. */ - struct cpuinfo_x86 c; - - /* On model_6fx and model_1067x bits [0:11] on smrr_base - are reserved */ - get_fms(&c, cpuid_eax(1)); - if (cpu_has_alternative_smrr()) - params->smrr_base.lo = (params->smram_base & rmask); - else - params->smrr_base.lo = (params->smram_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; - } else { + if (!IS_ALIGNED(tseg_base, tseg_size)) { printk(BIOS_WARNING, "TSEG base not aligned with TSEG SIZE! Not setting SMRR\n"); + return; } + + /* 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; + + /* On model_6fx and model_1067x bits [0:11] on smrr_base are reserved */ + if (cpu_has_alternative_smrr()) + params->smrr_base.lo &= ~rmask; + + smm_subregion(SMM_SUBREGION_CHIPSET, ¶ms->ied_base, ¶ms->ied_size); } static void setup_ied_area(struct smm_relocation_params *params) @@ -186,11 +165,11 @@ void smm_info(uintptr_t *perm_smbase, size_t *perm_smsize, fill_in_relocation_params(&smm_reloc_params); - if (CONFIG_IED_REGION_SIZE != 0) + smm_subregion(SMM_SUBREGION_HANDLER, perm_smbase, perm_smsize); + + if (smm_reloc_params.ied_size) setup_ied_area(&smm_reloc_params); - *perm_smbase = smm_reloc_params.smram_base; - *perm_smsize = smm_reloc_params.smram_size; *smm_save_state_size = sizeof(em64t101_smm_state_save_area_t); } @@ -221,7 +200,7 @@ void smm_relocation_handler(int cpu, uintptr_t curr_smbase, printk(BIOS_DEBUG, "In relocation handler: cpu %d\n", cpu); /* Make appropriate changes to the save state map. */ - if (CONFIG_IED_REGION_SIZE != 0) + if (relo_params->ied_size) printk(BIOS_DEBUG, "New SMBASE=0x%08x IEDBASE=0x%08x\n", smbase, iedbase); else @@ -235,7 +214,7 @@ void smm_relocation_handler(int cpu, uintptr_t curr_smbase, /* Write EMRR and SMRR MSRs based on indicated support. */ mtrr_cap = rdmsr(MTRR_CAP_MSR); - if (!(mtrr_cap.lo & SMRR_SUPPORTED && relo_params->smrr_mask.lo != 0)) + if (!(mtrr_cap.lo & SMRR_SUPPORTED)) return; if (cpu_has_alternative_smrr()) -- cgit v1.2.3