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/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Helper functions for dealing with power management registers
* and the differences between PCH variants.
*/
#define __SIMPLE_DEVICE__
#include <console/console.h>
#include <device/pci.h>
#include <intelblocks/pmclib.h>
#include <intelblocks/rtc.h>
#include <soc/pci_devs.h>
#include <soc/pm.h>
#include <soc/pmc.h>
#include <types.h>
/*
* SMI
*/
const char *const *soc_smi_sts_array(size_t *smi_arr)
{
static const char *const smi_sts_bits[] = {
[2] = "BIOS",
[3] = "LEGACY_USB",
[4] = "SLP_SMI",
[5] = "APM",
[6] = "SWSMI_TMR",
[7] = "BIOS_RLS",
[8] = "PM1",
[9] = "GPE0",
[10] = "GPI",
[11] = "MCSMI",
[12] = "DEVMON",
[13] = "TCO",
[14] = "PERIODIC",
[20] = "PCI_EXP_SMI",
[23] = "IE_SMI",
[25] = "SCC_SMI",
[26] = "SPI",
[27] = "GPIO_UNLOCK",
[28] = "ESPI_SMI",
[29] = "SERIAL_I/O",
[30] = "ME_SMI",
[31] = "XHCI",
};
*smi_arr = ARRAY_SIZE(smi_sts_bits);
return smi_sts_bits;
}
/*
* TCO
*/
const char *const *soc_tco_sts_array(size_t *tco_arr)
{
static const char *const tco_sts_bits[] = {
[0] = "NMI2SMI",
[1] = "OS_TCO",
[2] = "TCO_INT",
[3] = "TIMEOUT",
[7] = "NEWCENTURY",
[8] = "BIOSWR",
[9] = "CPUSCI",
[10] = "CPUSMI",
[12] = "CPUSERR",
[13] = "SLVSEL",
[16] = "INTRD_DET",
[17] = "SECOND_TO",
[20] = "SMLINK_SLV"
};
*tco_arr = ARRAY_SIZE(tco_sts_bits);
return tco_sts_bits;
}
/*
* GPE0
*/
const char *const *soc_std_gpe_sts_array(size_t *gpe_arr)
{
static const char *const gpe_sts_bits[] = {
};
*gpe_arr = ARRAY_SIZE(gpe_sts_bits);
return gpe_sts_bits;
}
uint8_t *pmc_mmio_regs(void)
{
return (void *)(uintptr_t) pci_read_config32(PCH_DEV_PMC, PWRMBASE);
}
uintptr_t soc_read_pmc_base(void)
{
return (uintptr_t) (pmc_mmio_regs());
}
uint32_t *soc_pmc_etr_addr(void)
{
/*
* The pointer returned must not be cached, because the address depends on the
* MMCONF base address and the assigned PCI bus number, which both may change
* during the boot process!
*/
return pci_mmio_config32_addr(PCH_DEVFN_PMC << 12, ETR);
}
void soc_get_gpi_gpe_configs(uint8_t *dw0, uint8_t *dw1, uint8_t *dw2)
{
/* No functionality for this yet */
}
int soc_get_rtc_failed(void)
{
uint32_t pmcon_b = pci_s_read_config32(PCH_DEV_PMC, GEN_PMCON_B);
int rtc_fail = !!(pmcon_b & RTC_BATTERY_DEAD);
if (rtc_fail)
printk(BIOS_ERR, "%s: RTC battery dead or removed\n", __func__);
return rtc_fail;
}
/* Return 0, 3, or 5 to indicate the previous sleep state. */
int soc_prev_sleep_state(const struct chipset_power_state *ps, int prev_sleep_state)
{
/*
* Check for any power failure to determine if this a wake from
* S5 because the PCH does not set the WAK_STS bit when waking
* from a true G3 state.
*/
if (!(ps->pm1_sts & WAK_STS) &&
(ps->gen_pmcon_b & (PWR_FLR | SUS_PWR_FLR)))
prev_sleep_state = ACPI_S5;
return prev_sleep_state;
}
void soc_fill_power_state(struct chipset_power_state *ps)
{
uint8_t *pmc;
ps->gen_pmcon_a = pci_read_config32(PCH_DEV_PMC, GEN_PMCON_A);
ps->gen_pmcon_b = pci_read_config32(PCH_DEV_PMC, GEN_PMCON_B);
pmc = pmc_mmio_regs();
ps->gblrst_cause[0] = read32(pmc + GBLRST_CAUSE0);
ps->gblrst_cause[1] = read32(pmc + GBLRST_CAUSE1);
printk(BIOS_DEBUG, "GEN_PMCON: %08x %08x\n",
ps->gen_pmcon_a, ps->gen_pmcon_b);
printk(BIOS_DEBUG, "GBLRST_CAUSE: %08x %08x\n",
ps->gblrst_cause[0], ps->gblrst_cause[1]);
}
/* STM Support */
uint16_t get_pmbase(void)
{
return ACPI_BASE_ADDRESS;
}
/*
* Set which power state system will be after reapplying
* the power (from G3 State)
*/
void pmc_soc_set_afterg3_en(const bool on)
{
uint8_t reg8;
reg8 = pci_read_config8(PCH_DEV_PMC, GEN_PMCON_B);
if (on)
reg8 &= ~SLEEP_AFTER_POWER_FAIL;
else
reg8 |= SLEEP_AFTER_POWER_FAIL;
pci_write_config8(PCH_DEV_PMC, GEN_PMCON_B, reg8);
}
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