diff options
Diffstat (limited to 'src/soc/intel/apollolake/romstage.c')
| -rw-r--r-- | src/soc/intel/apollolake/romstage.c | 40 |
1 files changed, 35 insertions, 5 deletions
diff --git a/src/soc/intel/apollolake/romstage.c b/src/soc/intel/apollolake/romstage.c index d2ec6c1fa8..c20097e5d1 100644 --- a/src/soc/intel/apollolake/romstage.c +++ b/src/soc/intel/apollolake/romstage.c @@ -28,29 +28,30 @@ #include <console/console.h> #include <cpu/x86/mtrr.h> #include <cpu/x86/pae.h> +#include <delay.h> #include <device/pci_def.h> #include <device/resource.h> -#include <intelblocks/lpc_lib.h> #include <fsp/api.h> #include <fsp/memmap.h> #include <fsp/util.h> #include <intelblocks/cpulib.h> +#include <intelblocks/lpc_lib.h> +#include <intelblocks/msr.h> +#include <intelblocks/pmclib.h> #include <intelblocks/smm.h> #include <intelblocks/systemagent.h> -#include <intelblocks/pmclib.h> #include <mrc_cache.h> #include <soc/cpu.h> #include <soc/iomap.h> #include <soc/meminit.h> -#include <soc/systemagent.h> #include <soc/pci_devs.h> #include <soc/pm.h> #include <soc/romstage.h> +#include <soc/systemagent.h> #include <spi_flash.h> #include <string.h> -#include <timestamp.h> #include <timer.h> -#include <delay.h> +#include <timestamp.h> #include "chip.h" static const uint8_t hob_variable_guid[16] = { @@ -99,6 +100,32 @@ static void soc_early_romstage_init(void) lpc_io_setup_comm_a_b(); } +/* Thermal throttle activation offset */ +static void configure_thermal_target(void) +{ + const struct device *dev = dev_find_slot(0, SA_DEVFN_ROOT); + if (!dev) { + printk(BIOS_ERR, "Could not find SOC devicetree config\n"); + return; + } + const config_t *conf = dev->chip_info; + if (!dev->chip_info) { + printk(BIOS_ERR, "Could not find chip info\n"); + return; + } + msr_t msr; + + if (!conf->tcc_offset) + return; + + msr = rdmsr(MSR_TEMPERATURE_TARGET); + /* Bits 27:24 */ + msr.lo &= ~(TEMPERATURE_TCC_MASK << TEMPERATURE_TCC_SHIFT); + msr.lo |= (conf->tcc_offset & TEMPERATURE_TCC_MASK) + << TEMPERATURE_TCC_SHIFT; + wrmsr(MSR_TEMPERATURE_TARGET, msr); +} + /* * Punit Initialization code. This all isn't documented, but * this is the recipe. @@ -109,6 +136,9 @@ static bool punit_init(void) uint32_t data; struct stopwatch sw; + /* Thermal throttle activation offset */ + configure_thermal_target(); + /* * Software Core Disable Mask (P_CR_CORE_DISABLE_MASK_0_0_0_MCHBAR). * Enable all cores here. |