This patch mainly adds ACPI support to Minnowmax.
Signed-off-by: Saket Sinha saket.sinha89@gmail.com ---
board/intel/minnowmax/Makefile | 1 + board/intel/minnowmax/acpi.c | 234 +++++++++++++++++++++++++++++++++++++++++ 2 files changed, 235 insertions(+) create mode 100644 board/intel/minnowmax/acpi.c
diff --git a/board/intel/minnowmax/Makefile b/board/intel/minnowmax/Makefile index 1a61432..11f020a 100644 --- a/board/intel/minnowmax/Makefile +++ b/board/intel/minnowmax/Makefile @@ -5,3 +5,4 @@ #
obj-y += minnowmax.o start.o +obj-$(CONFIG_GENERATE_ACPI_TABLE) += acpi.o diff --git a/board/intel/minnowmax/acpi.c b/board/intel/minnowmax/acpi.c new file mode 100644 index 0000000..206af30 --- /dev/null +++ b/board/intel/minnowmax/acpi.c @@ -0,0 +1,234 @@ +/* + * Copyright (C) 2015, Saket Sinha saket.sinha89@gmail.com + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <asm/acpi_table.h> +#include <asm/ioapic.h> +#include <asm/tables.h> + +#define ILB_BASE_ADDRESS 0xfed08000 +/* These registers live behind the ILB_BASE_ADDRESS */ +#define ACTL 0x00 +#define SCIS_MASK 0x07 +#define SCIS_IRQ9 0x00 +#define SCIS_IRQ10 0x01 +#define SCIS_IRQ11 0x02 +#define SCIS_IRQ20 0x04 +#define SCIS_IRQ21 0x05 +#define SCIS_IRQ22 0x06 +#define SCIS_IRQ23 0x07 + +static inline uint32_t read_address(const void *addr) +{ + return *(volatile uint32_t *)addr; +} + +int acpi_sci_irq(void) +{ + u32 *actl = (u32 *)(ILB_BASE_ADDRESS + ACTL); + int scis; + static int sci_irq; + + if (sci_irq) + return sci_irq; + + /* Determine how SCI is routed. */ + scis = read_address(actl) & SCIS_MASK; + switch (scis) { + case SCIS_IRQ9: + case SCIS_IRQ10: + case SCIS_IRQ11: + sci_irq = scis - SCIS_IRQ9 + 9; + break; + case SCIS_IRQ20: + case SCIS_IRQ21: + case SCIS_IRQ22: + case SCIS_IRQ23: + sci_irq = scis - SCIS_IRQ20 + 20; + break; + default: + debug("Invalid SCI route! Defaulting to IRQ9.\n"); + sci_irq = 9; + break; + } + + debug("SCI is IRQ%d\n", sci_irq); + return sci_irq; +} + +unsigned long acpi_madt_irq_overrides(unsigned long current) +{ + int sci_irq = acpi_sci_irq(); + struct acpi_madt_irqoverride *irqovr; + uint16_t sci_flags = MP_IRQ_TRIGGER_LEVEL; + + /* INT_SRC_OVR */ + irqovr = (void *)current; + current += acpi_create_madt_irqoverride(irqovr, 0, 0, 2, 0); + + if (sci_irq >= 20) + sci_flags |= MP_IRQ_POLARITY_LOW; + else + sci_flags |= MP_IRQ_POLARITY_HIGH; + + irqovr = (void *)current; + current += acpi_create_madt_irqoverride(irqovr, 0, sci_irq, sci_irq, + sci_flags); + + return current; +} + +void acpi_create_fadt(struct acpi_fadt *fadt, struct acpi_facs *facs, + void *dsdt) +{ + acpi_header_t *header = &(fadt->header); + u16 pm, pmbase; + + pci_dev_t bdf = PCI_BDF(0, 0x1f, 0); + pci_read_config_word(bdf, 0x40, &pm); + pmbase = pm & 0xfffe; + memset((void *)fadt, 0, sizeof(struct acpi_fadt)); + memcpy(header->signature, "FACP", 4); + header->length = sizeof(struct acpi_fadt); + header->revision = 3; + memcpy(header->oem_id, OEM_ID, 6); + memcpy(header->oem_table_id, ACPI_TABLE_CREATOR, 8); + memcpy(header->asl_compiler_id, ASLC, 4); + header->asl_compiler_revision = 0; + + fadt->firmware_ctrl = (unsigned long) facs; + fadt->dsdt = (unsigned long) dsdt; + fadt->model = 0x00; + fadt->preferred_pm_profile = PM_MOBILE; + fadt->sci_int = 0x9; + fadt->smi_cmd = 0; + fadt->acpi_enable = 0; + fadt->acpi_disable = 0; + fadt->s4bios_req = 0x0; + fadt->pstate_cnt = 0; + fadt->pm1a_evt_blk = pmbase; + fadt->pm1b_evt_blk = 0x0; + fadt->pm1a_cnt_blk = pmbase + 0x4; + fadt->pm1b_cnt_blk = 0x0; + fadt->pm2_cnt_blk = pmbase + 0x50; + fadt->pm_tmr_blk = pmbase + 0x8; + fadt->gpe0_blk = pmbase + 0x20; + fadt->gpe1_blk = 0; + fadt->pm1_evt_len = 4; + fadt->pm1_cnt_len = 2; + fadt->pm2_cnt_len = 1; + fadt->pm_tmr_len = 4; + fadt->gpe0_blk_len = 16; + fadt->gpe1_blk_len = 0; + fadt->gpe1_base = 0; + fadt->cst_cnt = 0; + fadt->p_lvl3_lat = 87; + fadt->flush_size = 1024; + fadt->flush_stride = 16; + fadt->duty_offset = 1; + fadt->day_alrm = 0xd; + fadt->mon_alrm = 0x00; + fadt->century = 0x00; + fadt->iapc_boot_arch = ACPI_FADT_LEGACY_DEVICES | ACPI_FADT_8042; + + fadt->flags = ACPI_FADT_WBINVD | + ACPI_FADT_C1_SUPPORTED | + ACPI_FADT_SLEEP_BUTTON | + ACPI_FADT_RESET_REGISTER | + ACPI_FADT_SEALED_CASE | + ACPI_FADT_S4_RTC_WAKE | + ACPI_FADT_PLATFORM_CLOCK; + fadt->reset_reg.space_id = 1; + fadt->reset_reg.bit_width = 8; + fadt->reset_reg.bit_offset = 0; + fadt->reset_reg.access_size = ACPI_ACCESS_SIZE_BYTE_ACCESS; + fadt->reset_reg.addrl = 0xcf9; + fadt->reset_reg.addrh = 0; + fadt->reset_value = 6; + fadt->x_firmware_ctl_l = (unsigned long)facs; + fadt->x_firmware_ctl_h = 0; + fadt->x_dsdt_l = (unsigned long)dsdt; + fadt->x_dsdt_h = 0; + + fadt->x_pm1a_evt_blk.space_id = 1; + fadt->x_pm1a_evt_blk.bit_width = 32; + fadt->x_pm1a_evt_blk.bit_offset = 0; + fadt->x_pm1a_evt_blk.access_size = ACPI_ACCESS_SIZE_DWORD_ACCESS; + fadt->x_pm1a_evt_blk.addrl = pmbase; + fadt->x_pm1a_evt_blk.addrh = 0x0; + + fadt->x_pm1b_evt_blk.space_id = 1; + fadt->x_pm1b_evt_blk.bit_width = 0; + fadt->x_pm1b_evt_blk.bit_offset = 0; + fadt->x_pm1b_evt_blk.access_size = 0; + fadt->x_pm1b_evt_blk.addrl = 0x0; + fadt->x_pm1b_evt_blk.addrh = 0x0; + + fadt->x_pm1a_cnt_blk.space_id = 1; + fadt->x_pm1a_cnt_blk.bit_width = 16; + fadt->x_pm1a_cnt_blk.bit_offset = 0; + fadt->x_pm1a_cnt_blk.access_size = ACPI_ACCESS_SIZE_WORD_ACCESS; + fadt->x_pm1a_cnt_blk.addrl = pmbase + 0x4; + fadt->x_pm1a_cnt_blk.addrh = 0x0; + + fadt->x_pm1b_cnt_blk.space_id = 1; + fadt->x_pm1b_cnt_blk.bit_width = 0; + fadt->x_pm1b_cnt_blk.bit_offset = 0; + fadt->x_pm1b_cnt_blk.access_size = 0; + fadt->x_pm1b_cnt_blk.addrl = 0x0; + fadt->x_pm1b_cnt_blk.addrh = 0x0; + + fadt->x_pm2_cnt_blk.space_id = 1; + fadt->x_pm2_cnt_blk.bit_width = 8; + fadt->x_pm2_cnt_blk.bit_offset = 0; + fadt->x_pm2_cnt_blk.access_size = ACPI_ACCESS_SIZE_BYTE_ACCESS; + fadt->x_pm2_cnt_blk.addrl = pmbase + 0x50; + fadt->x_pm2_cnt_blk.addrh = 0x0; + + fadt->x_pm_tmr_blk.space_id = 1; + fadt->x_pm_tmr_blk.bit_width = 32; + fadt->x_pm_tmr_blk.bit_offset = 0; + fadt->x_pm_tmr_blk.access_size = ACPI_ACCESS_SIZE_DWORD_ACCESS; + fadt->x_pm_tmr_blk.addrl = pmbase + 0x8; + fadt->x_pm_tmr_blk.addrh = 0x0; + + fadt->x_gpe0_blk.space_id = 1; + fadt->x_gpe0_blk.bit_width = 128; + fadt->x_gpe0_blk.bit_offset = 0; + fadt->x_gpe0_blk.access_size = ACPI_ACCESS_SIZE_DWORD_ACCESS; + fadt->x_gpe0_blk.addrl = pmbase + 0x20; + fadt->x_gpe0_blk.addrh = 0x0; + + fadt->x_gpe1_blk.space_id = 1; + fadt->x_gpe1_blk.bit_width = 0; + fadt->x_gpe1_blk.bit_offset = 0; + fadt->x_gpe1_blk.access_size = 0; + fadt->x_gpe1_blk.addrl = 0x0; + fadt->x_gpe1_blk.addrh = 0x0; + + header->checksum = + table_compute_checksum((void *)fadt, header->length); +} + +unsigned long acpi_fill_madt(unsigned long current) +{ + /* create all subtables for processors */ + current = acpi_create_madt_lapics(current); + + /* IOAPIC */ + current += acpi_create_madt_ioapic((struct acpi_madt_ioapic *)current, + 2, IO_APIC_ADDR, 0); + + current = acpi_madt_irq_overrides(current); + + return current; +} + +unsigned long acpi_fill_mcfg(unsigned long current) +{ + return current; +} +