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cpu/intel/model_206ax: Allow PL1/PL2 configuration

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Tested on ThinkPad T420 with the i7-3940XM.

Change-Id: I064af25ec4805fae755eea52c4c9c6d4386c0aee
Signed-off-by: Anastasios Koutian <akoutian2@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/83269
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>
This commit is contained in:
Anastasios Koutian
2024-05-07 20:37:38 +01:00
committed by Felix Held
parent 048bffc365
commit 47a7fb3921
2 changed files with 19 additions and 4 deletions
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4
src/cpu/intel/model_206ax/chip.h
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@@ -42,6 +42,10 @@ struct cpu_intel_model_206ax_config {
enum cpu_acpi_level acpi_c3;
int tcc_offset; /* TCC Activation Offset */
unsigned int pl1_mw; /* Long-term power limit in milliwatts */
unsigned int pl2_mw; /* Short-term power limit in milliwatts */
int pp0_current_limit; /* Primary Plane Current Limit (Icc) in Amps */
int pp1_current_limit; /* Secondary Plane Current Limit (IAXG) in Amps */

19
src/cpu/intel/model_206ax/model_206ax_init.c
View File

@@ -96,6 +96,7 @@ int cpu_config_tdp_levels(void)
*/
void set_power_limits(u8 power_limit_1_time)
{
struct cpu_intel_model_206ax_config *conf = DEV_PTR(cpu_bus)->chip_info;
msr_t msr = rdmsr(MSR_PLATFORM_INFO);
msr_t limit;
unsigned int power_unit;
@@ -132,16 +133,26 @@ void set_power_limits(u8 power_limit_1_time)
power_limit_1_val = power_limit_time_sec_to_msr[power_limit_1_time];
/* Set long term power limit to TDP */
limit.lo = 0;
limit.lo |= tdp & PKG_POWER_LIMIT_MASK;
if (conf->pl1_mw) {
printk(BIOS_DEBUG, "Setting PL1 to %u milliwatts\n", conf->pl1_mw);
limit.lo |= ((conf->pl1_mw * power_unit) / 1000) & PKG_POWER_LIMIT_MASK;
} else {
/* Set long term power limit to TDP */
limit.lo |= tdp & PKG_POWER_LIMIT_MASK;
}
limit.lo |= PKG_POWER_LIMIT_EN;
limit.lo |= (power_limit_1_val & PKG_POWER_LIMIT_TIME_MASK) <<
PKG_POWER_LIMIT_TIME_SHIFT;
/* Set short term power limit to 1.25 * TDP */
limit.hi = 0;
limit.hi |= ((tdp * 125) / 100) & PKG_POWER_LIMIT_MASK;
if (conf->pl2_mw) {
printk(BIOS_DEBUG, "Setting PL2 to %u milliwatts\n", conf->pl2_mw);
limit.hi |= ((conf->pl2_mw * power_unit) / 1000) & PKG_POWER_LIMIT_MASK;
} else {
/* Set short term power limit to 1.25 * TDP */
limit.hi |= ((tdp * 125) / 100) & PKG_POWER_LIMIT_MASK;
}
limit.hi |= PKG_POWER_LIMIT_EN;
/* Power limit 2 time is only programmable on SNB EP/EX */