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/* SPDX-License-Identifier: GPL-2.0-only */
/* TODO: Check if this is still correct */
/* ACPI - create the Fixed ACPI Description Tables (FADT) */
#include <acpi/acpi.h>
#include <acpi/acpigen.h>
#include <amdblocks/acpi.h>
#include <amdblocks/cppc.h>
#include <amdblocks/cpu.h>
#include <amdblocks/acpimmio.h>
#include <amdblocks/ioapic.h>
#include <arch/ioapic.h>
#include <arch/smp/mpspec.h>
#include <console/console.h>
#include <cpu/amd/cpuid.h>
#include <cpu/amd/msr.h>
#include <cpu/x86/smm.h>
#include <soc/acpi.h>
#include <soc/iomap.h>
#include <soc/msr.h>
#include <types.h>
#include "chip.h"
unsigned long acpi_fill_madt(unsigned long current)
{
/* create all subtables for processors */
current = acpi_create_madt_lapics_with_nmis(current);
current += acpi_create_madt_ioapic_from_hw((acpi_madt_ioapic_t *)current, IO_APIC_ADDR);
current += acpi_create_madt_ioapic_from_hw((acpi_madt_ioapic_t *)current,
GNB_IO_APIC_ADDR);
/* PIT is connected to legacy IRQ 0, but IOAPIC GSI 2 */
current += acpi_create_madt_irqoverride((acpi_madt_irqoverride_t *)current,
MP_BUS_ISA, 0, 2,
MP_IRQ_TRIGGER_DEFAULT | MP_IRQ_POLARITY_DEFAULT);
/* SCI IRQ type override */
current += acpi_create_madt_irqoverride((acpi_madt_irqoverride_t *)current,
MP_BUS_ISA, ACPI_SCI_IRQ, ACPI_SCI_IRQ,
MP_IRQ_TRIGGER_LEVEL | MP_IRQ_POLARITY_LOW);
current = acpi_fill_madt_irqoverride(current);
return current;
}
/*
* Reference section 5.2.9 Fixed ACPI Description Table (FADT)
* in the ACPI 3.0b specification.
*/
void acpi_fill_fadt(acpi_fadt_t *fadt)
{
const struct soc_amd_mendocino_config *cfg = config_of_soc();
printk(BIOS_DEBUG, "pm_base: 0x%04x\n", ACPI_IO_BASE);
fadt->sci_int = ACPI_SCI_IRQ;
if (permanent_smi_handler()) {
fadt->smi_cmd = APM_CNT;
fadt->acpi_enable = APM_CNT_ACPI_ENABLE;
fadt->acpi_disable = APM_CNT_ACPI_DISABLE;
}
fadt->pm1a_evt_blk = ACPI_PM_EVT_BLK;
fadt->pm1a_cnt_blk = ACPI_PM1_CNT_BLK;
fadt->pm_tmr_blk = ACPI_PM_TMR_BLK;
fadt->gpe0_blk = ACPI_GPE0_BLK;
fadt->pm1_evt_len = 4; /* 32 bits */
fadt->pm1_cnt_len = 2; /* 16 bits */
fadt->pm_tmr_len = 4; /* 32 bits */
fadt->gpe0_blk_len = 8; /* 64 bits */
fill_fadt_extended_pm_regs(fadt);
/* p_lvl2_lat and p_lvl3_lat match what the AGESA code does, but those values are
overridden by the _CST packages in the processor devices. */
fadt->p_lvl2_lat = ACPI_FADT_C2_NOT_SUPPORTED;
fadt->p_lvl3_lat = ACPI_FADT_C3_NOT_SUPPORTED;
fadt->day_alrm = RTC_DATE_ALARM;
fadt->century = RTC_ALT_CENTURY;
fadt->iapc_boot_arch = cfg->common_config.fadt_boot_arch; /* legacy free default */
fadt->flags |= ACPI_FADT_WBINVD | /* See table 5-34 ACPI 6.3 spec */
ACPI_FADT_C1_SUPPORTED |
ACPI_FADT_S4_RTC_WAKE |
ACPI_FADT_32BIT_TIMER |
ACPI_FADT_PCI_EXPRESS_WAKE |
ACPI_FADT_PLATFORM_CLOCK |
ACPI_FADT_S4_RTC_VALID |
ACPI_FADT_REMOTE_POWER_ON;
if (cfg->s0ix_enable)
fadt->flags |= ACPI_FADT_LOW_PWR_IDLE_S0;
fadt->flags |= cfg->common_config.fadt_flags; /* additional board-specific flags */
}
uint32_t get_pstate_core_freq(union pstate_msr pstate_reg)
{
uint32_t core_freq, core_freq_mul, core_freq_div;
bool valid_freq_divisor;
/* Core frequency multiplier */
core_freq_mul = pstate_reg.cpu_fid_0_7;
/* Core frequency divisor ID */
core_freq_div = pstate_reg.cpu_dfs_id;
if (core_freq_div == 0) {
return 0;
} else if ((core_freq_div >= PSTATE_DEF_FREQ_DIV_MIN)
&& (core_freq_div <= PSTATE_DEF_EIGHTH_STEP_MAX)) {
/* Allow 1/8 integer steps for this range */
valid_freq_divisor = true;
} else if ((core_freq_div > PSTATE_DEF_EIGHTH_STEP_MAX)
&& (core_freq_div <= PSTATE_DEF_FREQ_DIV_MAX) && !(core_freq_div & 0x1)) {
/* Only allow 1/4 integer steps for this range */
valid_freq_divisor = true;
} else {
valid_freq_divisor = false;
}
if (valid_freq_divisor) {
/* 25 * core_freq_mul / (core_freq_div / 8) */
core_freq =
((PSTATE_DEF_CORE_FREQ_BASE * core_freq_mul * 8) / (core_freq_div));
} else {
printk(BIOS_WARNING, "Undefined core_freq_div %x used. Force to 1.\n",
core_freq_div);
core_freq = (PSTATE_DEF_CORE_FREQ_BASE * core_freq_mul);
}
return core_freq;
}
uint32_t get_pstate_core_power(union pstate_msr pstate_reg)
{
uint32_t voltage_in_uvolts, current_value_amps, current_divisor, power_in_mw;
/* Get Voltage from core voltage ID */
voltage_in_uvolts = get_pstate_core_uvolts(pstate_reg);
/* Current value in amps */
current_value_amps = pstate_reg.idd_value;
/* Current divisor */
current_divisor = pstate_reg.idd_div;
/* Power in mW */
power_in_mw = (voltage_in_uvolts) / 10 * current_value_amps;
switch (current_divisor) {
case 0:
power_in_mw = power_in_mw / 100L;
break;
case 1:
power_in_mw = power_in_mw / 1000L;
break;
case 2:
power_in_mw = power_in_mw / 10000L;
break;
case 3:
/* current_divisor is set to an undefined value.*/
printk(BIOS_WARNING, "Undefined current_divisor set for enabled P-state .\n");
power_in_mw = 0;
break;
}
return power_in_mw;
}
const acpi_cstate_t cstate_cfg_table[] = {
[0] = {
.ctype = 1,
.latency = 1,
.power = 0,
},
[1] = {
.ctype = 2,
.latency = 0x12,
.power = 0,
},
[2] = {
.ctype = 3,
.latency = 350,
.power = 0,
},
};
const acpi_cstate_t *get_cstate_config_data(size_t *size)
{
*size = ARRAY_SIZE(cstate_cfg_table);
return cstate_cfg_table;
}
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