From 5bb15f1a4d18bafaf51b17fd9ea6d861f2b9ebd2 Mon Sep 17 00:00:00 2001 From: Arthur Heymans Date: Sat, 22 Dec 2018 16:02:25 +0100 Subject: soc/intel/broadwell: Use C_ENVIRONMENT_BOOTBLOCK This puts the cache-as-ram init in the bootblock. Before setting up cache as ram the microcode updates are applied. This removes the possibility for a normal/fallback setup although implementing this should be quite easy. Setting up LPC in the bootblock to output console on SuperIOs is not done in this patch, therefore BOOTBLOCK_CONSOLE is not yet selected. Change-Id: I44eb6d380dea5b82e3f009a46381a0f611bb7935 Signed-off-by: Arthur Heymans Signed-off-by: Matt DeVillier Reviewed-on: https://review.coreboot.org/c/coreboot/+/30383 Tested-by: build bot (Jenkins) Reviewed-by: Nico Huber --- src/soc/intel/broadwell/bootblock/cpu.c | 63 ++----------------------- src/soc/intel/broadwell/bootblock/pch.c | 3 +- src/soc/intel/broadwell/bootblock/systemagent.c | 3 +- 3 files changed, 8 insertions(+), 61 deletions(-) (limited to 'src/soc/intel/broadwell/bootblock') diff --git a/src/soc/intel/broadwell/bootblock/cpu.c b/src/soc/intel/broadwell/bootblock/cpu.c index 2f1ac51981..f3c35f3441 100644 --- a/src/soc/intel/broadwell/bootblock/cpu.c +++ b/src/soc/intel/broadwell/bootblock/cpu.c @@ -19,47 +19,10 @@ #include #include #include -#include #include #include - -static void set_var_mtrr(unsigned int reg, unsigned int base, unsigned int size, - unsigned int type) -{ - /* Bit Bit 32-35 of MTRRphysMask should be set to 1 */ - msr_t basem, maskm; - basem.lo = base | type; - basem.hi = 0; - wrmsr(MTRR_PHYS_BASE(reg), basem); - maskm.lo = ~(size - 1) | MTRR_PHYS_MASK_VALID; - maskm.hi = (1 << (CONFIG_CPU_ADDR_BITS - 32)) - 1; - wrmsr(MTRR_PHYS_MASK(reg), maskm); -} - -static void enable_rom_caching(void) -{ - msr_t msr; - - disable_cache(); - set_var_mtrr(1, CACHE_ROM_BASE, CACHE_ROM_SIZE, MTRR_TYPE_WRPROT); - enable_cache(); - - /* Enable Variable MTRRs */ - msr.hi = 0x00000000; - msr.lo = 0x00000800; - wrmsr(MTRR_DEF_TYPE_MSR, msr); -} - -static void bootblock_mdelay(int ms) -{ - u32 target = ms * 24 * 1000; - msr_t current; - msr_t start = rdmsr(MSR_COUNTER_24_MHZ); - - do { - current = rdmsr(MSR_COUNTER_24_MHZ); - } while ((current.lo - start.lo) < target); -} +#include +#include static void set_flex_ratio_to_tdp_nominal(void) { @@ -102,7 +65,7 @@ static void set_flex_ratio_to_tdp_nominal(void) RCBA32_OR(SOFT_RESET_CTRL, 1); /* Delay before reset to avoid potential TPM lockout */ - bootblock_mdelay(30); + mdelay(30); /* Issue warm reset, will be "CPU only" due to soft reset data */ outb(0x0, 0xcf9); @@ -110,26 +73,8 @@ static void set_flex_ratio_to_tdp_nominal(void) halt(); } -static void check_for_clean_reset(void) -{ - msr_t msr; - msr = rdmsr(MTRR_DEF_TYPE_MSR); - - /* Use the MTRR default type MSR as a proxy for detecting INIT#. - * Reset the system if any known bits are set in that MSR. That is - * an indication of the CPU not being properly reset. */ - if (msr.lo & (MTRR_DEF_TYPE_EN | MTRR_DEF_TYPE_FIX_EN)) { - outb(0x0, 0xcf9); - outb(0x6, 0xcf9); - halt(); - } -} - -static void bootblock_cpu_init(void) +void bootblock_early_cpu_init(void) { /* Set flex ratio and reset if needed */ set_flex_ratio_to_tdp_nominal(); - check_for_clean_reset(); - enable_rom_caching(); - intel_update_microcode_from_cbfs(); } diff --git a/src/soc/intel/broadwell/bootblock/pch.c b/src/soc/intel/broadwell/bootblock/pch.c index dc7f42a625..1301610947 100644 --- a/src/soc/intel/broadwell/bootblock/pch.c +++ b/src/soc/intel/broadwell/bootblock/pch.c @@ -19,6 +19,7 @@ #include #include #include +#include /* * Enable Prefetching and Caching. @@ -66,7 +67,7 @@ static void set_spi_speed(void) SPIBAR8(SPIBAR_SSFC + 2) = ssfc; } -static void bootblock_southbridge_init(void) +void bootblock_early_southbridge_init(void) { map_rcba(); enable_spi_prefetch(); diff --git a/src/soc/intel/broadwell/bootblock/systemagent.c b/src/soc/intel/broadwell/bootblock/systemagent.c index e618636eb2..7aaed789ac 100644 --- a/src/soc/intel/broadwell/bootblock/systemagent.c +++ b/src/soc/intel/broadwell/bootblock/systemagent.c @@ -16,8 +16,9 @@ #include #include #include +#include -static void bootblock_northbridge_init(void) +void bootblock_early_northbridge_init(void) { uint32_t reg; -- cgit v1.2.3