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/* SPDX-License-Identifier: GPL-2.0-only */
/*
* This file is created based on Intel Alder Lake Processor PCH Datasheet
* Document number: 621483
* Chapter number: 2, 3, 4, 27, 28
*/
#include <device/mmio.h>
#include <device/device.h>
#include <device/pci_ops.h>
#include <intelblocks/fast_spi.h>
#include <intelblocks/gspi.h>
#include <intelblocks/lpc_lib.h>
#include <intelblocks/p2sb.h>
#include <intelblocks/pcr.h>
#include <intelblocks/pmclib.h>
#include <intelblocks/rtc.h>
#include <soc/bootblock.h>
#include <soc/soc_chip.h>
#include <soc/espi.h>
#include <soc/iomap.h>
#include <soc/p2sb.h>
#include <soc/pci_devs.h>
#include <soc/pcr_ids.h>
#include <soc/pm.h>
#if CONFIG(SOC_INTEL_ALDERLAKE_PCH_N)
#define PCR_PSF3_TO_SHDW_PMC_REG_BASE 0x1080
#else
#define PCR_PSF3_TO_SHDW_PMC_REG_BASE 0x1100
#endif
#define PCR_PSFX_TO_SHDW_BAR0 0
#define PCR_PSFX_TO_SHDW_BAR1 0x4
#define PCR_PSFX_TO_SHDW_BAR2 0x8
#define PCR_PSFX_TO_SHDW_BAR3 0xC
#define PCR_PSFX_TO_SHDW_BAR4 0x10
#define PCR_PSFX_TO_SHDW_PCIEN_IOEN 0x01
#define PCR_PSFX_T0_SHDW_PCIEN 0x1C
static void soc_config_pwrmbase(void)
{
/*
* Assign Resources to PWRMBASE
* Clear BIT 1-2 Command Register
*/
pci_and_config16(PCH_DEV_PMC, PCI_COMMAND, ~(PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER));
/* Program PWRM Base */
pci_write_config32(PCH_DEV_PMC, PWRMBASE, PCH_PWRM_BASE_ADDRESS);
/* Enable Bus Master and MMIO Space */
pci_or_config16(PCH_DEV_PMC, PCI_COMMAND, (PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER));
/* Enable PWRM in PMC */
setbits32((void *)PCH_PWRM_BASE_ADDRESS + ACTL, PWRM_EN);
}
void bootblock_pch_early_init(void)
{
/*
* Perform P2SB configuration before any another controller initialization as the
* controller might want to perform PCR settings.
*/
p2sb_enable_bar();
p2sb_configure_hpet();
fast_spi_early_init(SPI_BASE_ADDRESS);
gspi_early_bar_init();
/*
* Enabling PWRM Base for accessing
* Global Reset Cause Register.
*/
soc_config_pwrmbase();
}
static void soc_config_acpibase(void)
{
uint32_t pmc_reg_value;
uint32_t pmc_base_reg = PCR_PSF3_TO_SHDW_PMC_REG_BASE;
pmc_reg_value = pcr_read32(PID_PSF3, pmc_base_reg + PCR_PSFX_TO_SHDW_BAR4);
if (pmc_reg_value != 0xffffffff) {
/* Disable Io Space before changing the address */
pcr_rmw32(PID_PSF3, pmc_base_reg + PCR_PSFX_T0_SHDW_PCIEN,
~PCR_PSFX_TO_SHDW_PCIEN_IOEN, 0);
/* Program ABASE in PSF3 PMC space BAR4*/
pcr_write32(PID_PSF3, pmc_base_reg + PCR_PSFX_TO_SHDW_BAR4,
ACPI_BASE_ADDRESS);
/* Enable IO Space */
pcr_rmw32(PID_PSF3, pmc_base_reg + PCR_PSFX_T0_SHDW_PCIEN,
~0, PCR_PSFX_TO_SHDW_PCIEN_IOEN);
}
}
void pch_early_iorange_init(void)
{
uint16_t io_enables = LPC_IOE_COMA_EN | LPC_IOE_COMB_EN |
LPC_IOE_LPT_EN | LPC_IOE_FDD_EN |
LPC_IOE_LGE_200 | LPC_IOE_HGE_208 |
LPC_IOE_KBC_60_64 | LPC_IOE_EC_62_66 |
LPC_IOE_SUPERIO_2E_2F | LPC_IOE_EC_4E_4F;
/* IO Decode Range */
if (CONFIG(DRIVERS_UART_8250IO))
lpc_io_setup_comm_a_b();
/* IO Decode Enable */
lpc_enable_fixed_io_ranges(io_enables);
/* Program generic IO Decode Range */
pch_enable_lpc();
}
void bootblock_pch_init(void)
{
/*
* Enabling ABASE for accessing PM1_STS, PM1_EN, PM1_CNT,
* GPE0_STS, GPE0_EN registers.
*/
soc_config_acpibase();
/* Set up GPE configuration */
pmc_gpe_init();
enable_rtc_upper_bank();
}
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