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/* SPDX-License-Identifier: GPL-2.0-or-later */
#include <string.h>
#include <console/console.h>
#include <cbfs.h>
#include <device/device.h>
#include <device/mmio.h>
#include <acpi/acpi.h>
#include <amdblocks/amd_pci_util.h>
#include <amdblocks/gpio_banks.h>
#include <cbmem.h>
#include <baseboard/variants.h>
#include <boardid.h>
#include <gpio.h>
#include <smbios.h>
#include <soc/cpu.h>
#include <soc/gpio.h>
#include <soc/nvs.h>
#include <soc/pci_devs.h>
#include <soc/platform_descriptors.h>
#include <soc/southbridge.h>
#include <soc/smi.h>
#include <soc/soc_util.h>
#include <amdblocks/acpimmio.h>
#include <variant/ec.h>
#include <variant/thermal.h>
#include <vendorcode/google/chromeos/chromeos.h>
#include <commonlib/helpers.h>
#include <bootstate.h>
/***********************************************************
* These arrays set up the FCH PCI_INTR registers 0xC00/0xC01.
* This table is responsible for physically routing the PIC and
* IOAPIC IRQs to the different PCI devices on the system. It
* is read and written via registers 0xC00/0xC01 as an
* Index/Data pair. These values are chipset and mainboard
* dependent and should be updated accordingly.
*/
static uint8_t fch_pic_routing[0x80];
static uint8_t fch_apic_routing[0x80];
_Static_assert(sizeof(fch_pic_routing) == sizeof(fch_apic_routing),
"PIC and APIC FCH interrupt tables must be the same size");
/*
* This table doesn't actually perform any routing. It only populates the
* PCI_INTERRUPT_LINE register on the PCI device with the PIC value specified
* in fch_apic_routing. The linux kernel only looks at this field as a backup
* if ACPI routing fails to describe the PCI routing correctly. The linux kernel
* also uses the APIC by default, so the value coded into the registers will be
* wrong.
*
* This table is also confusing because PCI Interrupt routing happens at the
* device/slot level, not the function level.
*/
static const struct pirq_struct mainboard_pirq_data[] = {
{ PCIE_GPP_0_DEVFN, { PIRQ_A, PIRQ_B, PIRQ_C, PIRQ_D } },
{ PCIE_GPP_1_DEVFN, { PIRQ_A, PIRQ_B, PIRQ_C, PIRQ_D } }, // Bridge 1 - Wifi
{ PCIE_GPP_2_DEVFN, { PIRQ_A, PIRQ_B, PIRQ_C, PIRQ_D } }, // Bridge 2 - SD
{ PCIE_GPP_3_DEVFN, { PIRQ_A, PIRQ_B, PIRQ_C, PIRQ_D } },
{ PCIE_GPP_4_DEVFN, { PIRQ_A, PIRQ_B, PIRQ_C, PIRQ_D } },
{ PCIE_GPP_5_DEVFN, { PIRQ_A, PIRQ_B, PIRQ_C, PIRQ_D } },
{ PCIE_GPP_6_DEVFN, { PIRQ_A, PIRQ_B, PIRQ_C, PIRQ_D } }, // Bridge 6 - NVME
{ PCIE_GPP_A_DEVFN, { PIRQ_A, PIRQ_B, PIRQ_C, PIRQ_D } },
{ PCIE_GPP_B_DEVFN, { PIRQ_A, PIRQ_B, PIRQ_C, PIRQ_D } },
{ SMBUS_DEVFN, { PIRQ_SMBUS, PIRQ_NC, PIRQ_NC, PIRQ_NC } },
};
/*
* This controls the device -> IRQ routing.
* The PIC values are limited to 0,1, 3 - 12, 14, 15.
*/
static const struct fch_irq_routing {
uint8_t intr_index;
uint8_t pic_irq_num;
uint8_t apic_irq_num;
} fch_pirq[] = {
{ PIRQ_A, 6, 16 },
{ PIRQ_B, 6, 17 },
{ PIRQ_C, 14, 18 },
{ PIRQ_D, 15, 19 },
{ PIRQ_SCI, 9, 9 },
{ PIRQ_EMMC, 5, 5 },
{ PIRQ_GPIO, 7, 7 },
{ PIRQ_I2C2, 10, 10 },
{ PIRQ_I2C3, 11, 11 },
{ PIRQ_UART0, 4, 4 },
{ PIRQ_UART1, 3, 3 },
/* The MISC registers are not interrupt numbers */
{ PIRQ_MISC, 0xfa, 0x00 },
{ PIRQ_MISC0, 0xf1, 0x00 },
{ PIRQ_MISC1, 0x00, 0x00 },
{ PIRQ_MISC2, 0x00, 0x00 },
};
static void init_tables(void)
{
const struct fch_irq_routing *entry;
int i;
memset(fch_pic_routing, PIRQ_NC, sizeof(fch_pic_routing));
memset(fch_apic_routing, PIRQ_NC, sizeof(fch_apic_routing));
for (i = 0; i < ARRAY_SIZE(fch_pirq); i++) {
entry = fch_pirq + i;
fch_pic_routing[entry->intr_index] = entry->pic_irq_num;
fch_apic_routing[entry->intr_index] = entry->apic_irq_num;
}
}
/* PIRQ Setup */
static void pirq_setup(void)
{
init_tables();
pirq_data_ptr = mainboard_pirq_data;
pirq_data_size = ARRAY_SIZE(mainboard_pirq_data);
intr_data_ptr = fch_apic_routing;
picr_data_ptr = fch_pic_routing;
}
static void mainboard_configure_gpios(void)
{
size_t base_num_gpios, override_num_gpios;
const struct soc_amd_gpio *base_gpios, *override_gpios;
base_gpios = variant_base_gpio_table(&base_num_gpios);
override_gpios = variant_override_gpio_table(&override_num_gpios);
gpio_configure_pads_with_override(base_gpios, base_num_gpios, override_gpios,
override_num_gpios);
}
static void mainboard_init(void *chip_info)
{
const struct sci_source *gpes;
size_t num;
int boardid;
mainboard_ec_init();
boardid = board_id();
printk(BIOS_INFO, "Board ID: %d\n", boardid);
mainboard_configure_gpios();
/* Update DUT configuration */
variant_devtree_update();
/*
* Some platforms use SCI not generated by a GPIO pin (event above 23).
* For these boards, gpe_configure_sci() is still needed, but all GPIO
* generated events (23-0) must be removed from gpe_table[].
* For boards that only have GPIO generated events, table gpe_table[]
* must be removed, and get_gpe_table() should return NULL.
*/
gpes = get_gpe_table(&num);
if (gpes != NULL)
gpe_configure_sci(gpes, num);
}
void mainboard_get_pcie_ddi_descriptors(const fsp_pcie_descriptor **pcie_descs,
size_t *pcie_num,
const fsp_ddi_descriptor **ddi_descs,
size_t *ddi_num)
{
variant_get_pcie_ddi_descriptors(pcie_descs, pcie_num, ddi_descs, ddi_num);
}
/*************************************************
* Dedicated mainboard function
*************************************************/
static void zork_enable(struct device *dev)
{
printk(BIOS_INFO, "Mainboard " CONFIG_MAINBOARD_PART_NUMBER " Enable.\n");
/* Initialize the PIRQ data structures for consumption */
pirq_setup();
dev->ops->acpi_inject_dsdt = chromeos_dsdt_generator;
}
static const struct soc_amd_gpio gpio_set_bl[] = {
PAD_GPO(GPIO_85, LOW),
};
static void reset_backlight_gpio(void *unused)
{
printk(BIOS_DEBUG, "Reset backlight GPIO\n");
/* Re-Enable backlight - GPIO 85 active low */
/* TODO: Remove this after AGESA stops enabling the fan - b/155667589 */
program_gpios(gpio_set_bl, ARRAY_SIZE(gpio_set_bl)); /* APU_EDP_BL_DISABLE */
}
static void mainboard_final(void *chip_info)
{
struct global_nvs_t *gnvs;
gnvs = cbmem_find(CBMEM_ID_ACPI_GNVS);
reset_backlight_gpio(NULL);
if (gnvs) {
gnvs->tmps = CTL_TDP_SENSOR_ID;
gnvs->tcrt = CRITICAL_TEMPERATURE;
gnvs->tpsv = PASSIVE_TEMPERATURE;
}
}
struct chip_operations mainboard_ops = {
.init = mainboard_init,
.enable_dev = zork_enable,
.final = mainboard_final,
};
void __weak variant_devtree_update(void)
{
}
__weak const struct soc_amd_gpio *variant_override_gpio_table(size_t *size)
{
/* Default weak implementation - No overrides. */
*size = 0;
return NULL;
}
BOOT_STATE_INIT_ENTRY(BS_OS_RESUME, BS_ON_ENTRY, reset_backlight_gpio, NULL);
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