diff options
Diffstat (limited to 'src/mainboard/google/skyrim')
| -rw-r--r-- | src/mainboard/google/skyrim/mainboard.c | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/src/mainboard/google/skyrim/mainboard.c b/src/mainboard/google/skyrim/mainboard.c index 0558dbaf31..7c89f49b48 100644 --- a/src/mainboard/google/skyrim/mainboard.c +++ b/src/mainboard/google/skyrim/mainboard.c @@ -1,10 +1,91 @@ /* SPDX-License-Identifier: GPL-2.0-or-later */ +#include <amdblocks/amd_pci_util.h> #include <baseboard/variants.h> #include <console/console.h> #include <device/device.h> +#include <soc/acpi.h> #include <variant/ec.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 controls the device -> IRQ routing. + * + * Hardcoded IRQs: + * 0: timer < soc/amd/common/acpi/lpc.asl + * 1: i8042 - Keyboard + * 2: cascade + * 8: rtc0 <- soc/amd/common/acpi/lpc.asl + * 9: acpi <- soc/amd/common/acpi/lpc.asl + */ + +static const struct fch_irq_routing { + uint8_t intr_index; + uint8_t pic_irq_num; + uint8_t apic_irq_num; +} skyrim_fch[] = { + { PIRQ_A, 12, PIRQ_NC }, + { PIRQ_B, 14, PIRQ_NC }, + { PIRQ_C, 15, PIRQ_NC }, + { PIRQ_D, 12, PIRQ_NC }, + { PIRQ_E, 14, PIRQ_NC }, + { PIRQ_F, 15, PIRQ_NC }, + { PIRQ_G, 12, PIRQ_NC }, + { PIRQ_H, 14, PIRQ_NC }, + + { PIRQ_SCI, ACPI_SCI_IRQ, ACPI_SCI_IRQ }, + { PIRQ_SD, PIRQ_NC, PIRQ_NC }, + { PIRQ_SDIO, PIRQ_NC, PIRQ_NC }, + { PIRQ_EMMC, PIRQ_NC, PIRQ_NC }, + { PIRQ_GPIO, 11, 11 }, + { PIRQ_I2C0, 10, 10 }, + { PIRQ_I2C1, 7, 7 }, + { PIRQ_I2C2, 6, 6 }, + { PIRQ_I2C3, 5, 5 }, + { PIRQ_UART0, 4, 4 }, + { PIRQ_UART1, 3, 3 }, + + /* The MISC registers are not interrupt numbers */ + { PIRQ_MISC, 0xfa, 0x00 }, + { PIRQ_MISC0, 0x91, 0x00 }, + { PIRQ_HPET_L, 0x00, 0x00 }, + { PIRQ_HPET_H, 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(skyrim_fch); i++) { + entry = skyrim_fch + i; + fch_pic_routing[entry->intr_index] = entry->pic_irq_num; + fch_apic_routing[entry->intr_index] = entry->apic_irq_num; + } +} + +static void pirq_setup(void) +{ + 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; @@ -26,6 +107,10 @@ static void mainboard_init(void *chip_info) static void mainboard_enable(struct device *dev) { printk(BIOS_INFO, "Mainboard " CONFIG_MAINBOARD_PART_NUMBER " Enable.\n"); + + init_tables(); + /* Initialize the PIRQ data structures for consumption */ + pirq_setup(); } struct chip_operations mainboard_ops = { |