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/* SPDX-License-Identifier: GPL-2.0-only */
#include <console/console.h>
#include <device/mmio.h>
#include <device/device.h>
#include <device/pci_ops.h>
#include <gpio.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/iomap.h>
#include <soc/lpc.h>
#include <soc/p2sb.h>
#include <soc/pch.h>
#include <soc/pci_devs.h>
#include <soc/pcr_ids.h>
#include <soc/pm.h>
#define PCR_PSF3_TO_SHDW_PMC_REG_BASE_CNP_LP 0x1400
#define PCR_PSF3_TO_SHDW_PMC_REG_BASE_CNP_H 0x0980
#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 uint32_t get_pmc_reg_base(void)
{
if (CONFIG(SOC_INTEL_CANNONLAKE_PCH_H))
return PCR_PSF3_TO_SHDW_PMC_REG_BASE_CNP_H;
else
return PCR_PSF3_TO_SHDW_PMC_REG_BASE_CNP_LP;
}
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;
pmc_base_reg = get_pmc_reg_base();
if (!pmc_base_reg)
die_with_post_code(POSTCODE_HW_INIT_FAILURE,
"Invalid PMC base address\n");
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_EC_4E_4F | LPC_IOE_SUPERIO_2E_2F | LPC_IOE_KBC_60_64 |
LPC_IOE_EC_62_66 | LPC_IOE_LGE_200;
/* 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)
{
/*
* Clear the GPI interrupt status and enable registers. These
* registers do not get reset to default state when booting from S5.
*/
gpi_clear_int_cfg();
/*
* 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();
/* GPIO community PM configuration */
soc_gpio_pm_configuration();
}
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