diff options
Diffstat (limited to 'src/soc/intel/quark')
| -rw-r--r-- | src/soc/intel/quark/bootblock/bootblock.c | 37 | ||||
| -rw-r--r-- | src/soc/intel/quark/include/soc/reg_access.h | 1 |
2 files changed, 38 insertions, 0 deletions
diff --git a/src/soc/intel/quark/bootblock/bootblock.c b/src/soc/intel/quark/bootblock/bootblock.c index 4aa774b259..959084d935 100644 --- a/src/soc/intel/quark/bootblock/bootblock.c +++ b/src/soc/intel/quark/bootblock/bootblock.c @@ -18,6 +18,7 @@ #include <device/pci_def.h> #include <program_loading.h> #include <soc/iomap.h> +#include <soc/intel/common/util.h> #include <soc/pci_devs.h> #include <soc/reg_access.h> @@ -47,8 +48,38 @@ static const struct reg_script hsuart_init[] = { REG_SCRIPT_END }; +static const struct reg_script mtrr_init[] = { + /* Use write-through caching, for FSP 2.0 the cache will be invalidated + * postchar (arch/x86/exit_car.S). + */ + + /* Enable the cache */ + REG_CPU_CR_AND(0, ~(CR0_CD | CR0_NW)), + + /* Cache the SPI flash */ + REG_MSR_WRITE(MTRR_PHYS_BASE(0), (uint32_t)((-CONFIG_ROM_SIZE) + | MTRR_TYPE_WRTHROUGH)), + REG_MSR_WRITE(MTRR_PHYS_MASK(0), (uint32_t)((-CONFIG_ROM_SIZE) + | MTRR_PHYS_MASK_VALID)), + + /* Cache ESRAM */ + REG_MSR_WRITE(MTRR_PHYS_BASE(1), (uint32_t)(0x80000000 + | MTRR_TYPE_WRTHROUGH)), + REG_MSR_WRITE(MTRR_PHYS_MASK(1), (uint32_t)((~0x7ffff) + | MTRR_PHYS_MASK_VALID)), + + /* Enable the variable MTRRs */ + REG_MSR_WRITE(MTRR_DEF_TYPE_MSR, MTRR_DEF_TYPE_EN + | MTRR_TYPE_UNCACHEABLE), + + REG_SCRIPT_END +}; + void bootblock_soc_early_init(void) { + /* Initialize the MTRRs */ + reg_script_run(mtrr_init); + /* Initialize the controllers */ reg_script_run_on_dev(I2CGPIO_BDF, i2c_gpio_controller_init); reg_script_run_on_dev(LPC_BDF, legacy_gpio_init); @@ -60,6 +91,12 @@ void bootblock_soc_early_init(void) reg_script_run_on_dev(HSUART1_BDF, hsuart_init); } +void bootblock_soc_init(void) +{ + /* Display the MTRRs */ + soc_display_mtrrs(); +} + void platform_prog_run(struct prog *prog) { /* Display the program entry point */ diff --git a/src/soc/intel/quark/include/soc/reg_access.h b/src/soc/intel/quark/include/soc/reg_access.h index a07bd22d9a..0e64917177 100644 --- a/src/soc/intel/quark/include/soc/reg_access.h +++ b/src/soc/intel/quark/include/soc/reg_access.h @@ -20,6 +20,7 @@ #include <arch/io.h> #include <cpu/x86/msr.h> +#include <cpu/x86/mtrr.h> #include <delay.h> #include <fsp/util.h> #include <reg_script.h> |