| /* 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 <acpi/acpi_gnvs.h> |
| #include <amdblocks/amd_pci_util.h> |
| #include <amdblocks/gpio_banks.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_devtree_update(void) |
| { |
| variant_audio_update(); |
| variant_bluetooth_update(); |
| variant_devtree_update(); |
| } |
| |
| 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 */ |
| mainboard_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 = variant_gpe_table(&num); |
| if (gpes != NULL) |
| gpe_configure_sci(gpes, num); |
| } |
| |
| void mainboard_get_dxio_ddi_descriptors(const fsp_dxio_descriptor **dxio_descs, |
| size_t *dxio_num, |
| const fsp_ddi_descriptor **ddi_descs, |
| size_t *ddi_num) |
| { |
| variant_get_dxio_ddi_descriptors(dxio_descs, dxio_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 *gnvs; |
| |
| gnvs = acpi_get_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); |