mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-07-05 18:56:15 +09:00
6aef68dc36
Per ACPI spec, during ACPI OS initialization, OSPM can determine that the ACPI hardware registers are owned by SMI (by way of the SCI_EN bit in the PM1_CNT register), in which case the ACPI OS issues the ACPI_ENABLE command to the SMI_CMD port. The SCI_EN bit effectively tracks the ownership of the ACPI hardware registers. However since U-Boot does not support SMI, we report all 3 fields in FADT (SMI_CMD, ACPI_ENABLE, ACPI_DISABLE) as zero, by following the spec who says: these fields are reserved and must be zero on system that does not support System Management mode. U-Boot seems to behave in a correct way that the ACPI spec allows, at least Linux does not complain, but apparently Windows does not think so. During Windows bring up debugging, it is observed that even these 3 fields are zero, Windows are still trying to issue SMI with hardcoded SMI port address and commands, and expecting SCI_EN to be changed by the firmware. Eventually Windows gives us a BSOD (Blue Screen of Death) saying ACPI_BIOS_ERROR and refuses to start. To fix this, turn on the SCI_EN bit by ourselves. With this patch, now U-Boot can install and boot Windows 8.1/10 successfully with the help of SeaBIOS using legacy interface (non-UEFI mode). Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org>
316 lines
9.1 KiB
C
316 lines
9.1 KiB
C
/*
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* Based on acpi.c from coreboot
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*
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* Copyright (C) 2015, Saket Sinha <saket.sinha89@gmail.com>
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* Copyright (C) 2016, Bin Meng <bmeng.cn@gmail.com>
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#define RSDP_SIG "RSD PTR " /* RSDP pointer signature */
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#define OEM_ID "U-BOOT" /* U-Boot */
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#define OEM_TABLE_ID "U-BOOTBL" /* U-Boot Table */
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#define ASLC_ID "INTL" /* Intel ASL Compiler */
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#define ACPI_RSDP_REV_ACPI_1_0 0
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#define ACPI_RSDP_REV_ACPI_2_0 2
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/*
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* RSDP (Root System Description Pointer)
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* Note: ACPI 1.0 didn't have length, xsdt_address, and ext_checksum
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*/
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struct acpi_rsdp {
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char signature[8]; /* RSDP signature */
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u8 checksum; /* Checksum of the first 20 bytes */
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char oem_id[6]; /* OEM ID */
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u8 revision; /* 0 for ACPI 1.0, others 2 */
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u32 rsdt_address; /* Physical address of RSDT (32 bits) */
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u32 length; /* Total RSDP length (incl. extended part) */
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u64 xsdt_address; /* Physical address of XSDT (64 bits) */
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u8 ext_checksum; /* Checksum of the whole table */
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u8 reserved[3];
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};
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/* Generic ACPI header, provided by (almost) all tables */
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struct acpi_table_header {
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char signature[4]; /* ACPI signature (4 ASCII characters) */
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u32 length; /* Table length in bytes (incl. header) */
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u8 revision; /* Table version (not ACPI version!) */
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volatile u8 checksum; /* To make sum of entire table == 0 */
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char oem_id[6]; /* OEM identification */
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char oem_table_id[8]; /* OEM table identification */
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u32 oem_revision; /* OEM revision number */
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char aslc_id[4]; /* ASL compiler vendor ID */
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u32 aslc_revision; /* ASL compiler revision number */
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};
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/* A maximum number of 32 ACPI tables ought to be enough for now */
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#define MAX_ACPI_TABLES 32
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/* RSDT (Root System Description Table) */
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struct acpi_rsdt {
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struct acpi_table_header header;
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u32 entry[MAX_ACPI_TABLES];
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};
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/* XSDT (Extended System Description Table) */
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struct acpi_xsdt {
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struct acpi_table_header header;
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u64 entry[MAX_ACPI_TABLES];
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};
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/* FADT Preferred Power Management Profile */
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enum acpi_pm_profile {
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ACPI_PM_UNSPECIFIED = 0,
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ACPI_PM_DESKTOP,
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ACPI_PM_MOBILE,
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ACPI_PM_WORKSTATION,
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ACPI_PM_ENTERPRISE_SERVER,
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ACPI_PM_SOHO_SERVER,
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ACPI_PM_APPLIANCE_PC,
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ACPI_PM_PERFORMANCE_SERVER,
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ACPI_PM_TABLET
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};
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/* FADT flags for p_lvl2_lat and p_lvl3_lat */
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#define ACPI_FADT_C2_NOT_SUPPORTED 101
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#define ACPI_FADT_C3_NOT_SUPPORTED 1001
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/* FADT Boot Architecture Flags */
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#define ACPI_FADT_LEGACY_FREE 0x00
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#define ACPI_FADT_LEGACY_DEVICES (1 << 0)
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#define ACPI_FADT_8042 (1 << 1)
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#define ACPI_FADT_VGA_NOT_PRESENT (1 << 2)
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#define ACPI_FADT_MSI_NOT_SUPPORTED (1 << 3)
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#define ACPI_FADT_NO_PCIE_ASPM_CONTROL (1 << 4)
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/* FADT Feature Flags */
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#define ACPI_FADT_WBINVD (1 << 0)
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#define ACPI_FADT_WBINVD_FLUSH (1 << 1)
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#define ACPI_FADT_C1_SUPPORTED (1 << 2)
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#define ACPI_FADT_C2_MP_SUPPORTED (1 << 3)
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#define ACPI_FADT_POWER_BUTTON (1 << 4)
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#define ACPI_FADT_SLEEP_BUTTON (1 << 5)
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#define ACPI_FADT_FIXED_RTC (1 << 6)
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#define ACPI_FADT_S4_RTC_WAKE (1 << 7)
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#define ACPI_FADT_32BIT_TIMER (1 << 8)
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#define ACPI_FADT_DOCKING_SUPPORTED (1 << 9)
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#define ACPI_FADT_RESET_REGISTER (1 << 10)
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#define ACPI_FADT_SEALED_CASE (1 << 11)
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#define ACPI_FADT_HEADLESS (1 << 12)
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#define ACPI_FADT_SLEEP_TYPE (1 << 13)
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#define ACPI_FADT_PCI_EXPRESS_WAKE (1 << 14)
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#define ACPI_FADT_PLATFORM_CLOCK (1 << 15)
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#define ACPI_FADT_S4_RTC_VALID (1 << 16)
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#define ACPI_FADT_REMOTE_POWER_ON (1 << 17)
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#define ACPI_FADT_APIC_CLUSTER (1 << 18)
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#define ACPI_FADT_APIC_PHYSICAL (1 << 19)
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#define ACPI_FADT_HW_REDUCED_ACPI (1 << 20)
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#define ACPI_FADT_LOW_PWR_IDLE_S0 (1 << 21)
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enum acpi_address_space_type {
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ACPI_ADDRESS_SPACE_MEMORY = 0, /* System memory */
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ACPI_ADDRESS_SPACE_IO, /* System I/O */
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ACPI_ADDRESS_SPACE_PCI, /* PCI config space */
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ACPI_ADDRESS_SPACE_EC, /* Embedded controller */
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ACPI_ADDRESS_SPACE_SMBUS, /* SMBus */
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ACPI_ADDRESS_SPACE_PCC = 0x0a, /* Platform Comm. Channel */
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ACPI_ADDRESS_SPACE_FIXED = 0x7f /* Functional fixed hardware */
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};
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enum acpi_address_space_size {
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ACPI_ACCESS_SIZE_UNDEFINED = 0,
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ACPI_ACCESS_SIZE_BYTE_ACCESS,
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ACPI_ACCESS_SIZE_WORD_ACCESS,
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ACPI_ACCESS_SIZE_DWORD_ACCESS,
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ACPI_ACCESS_SIZE_QWORD_ACCESS
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};
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struct acpi_gen_regaddr {
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u8 space_id; /* Address space ID */
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u8 bit_width; /* Register size in bits */
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u8 bit_offset; /* Register bit offset */
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u8 access_size; /* Access size */
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u32 addrl; /* Register address, low 32 bits */
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u32 addrh; /* Register address, high 32 bits */
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};
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/* FADT (Fixed ACPI Description Table) */
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struct __packed acpi_fadt {
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struct acpi_table_header header;
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u32 firmware_ctrl;
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u32 dsdt;
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u8 res1;
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u8 preferred_pm_profile;
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u16 sci_int;
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u32 smi_cmd;
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u8 acpi_enable;
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u8 acpi_disable;
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u8 s4bios_req;
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u8 pstate_cnt;
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u32 pm1a_evt_blk;
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u32 pm1b_evt_blk;
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u32 pm1a_cnt_blk;
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u32 pm1b_cnt_blk;
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u32 pm2_cnt_blk;
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u32 pm_tmr_blk;
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u32 gpe0_blk;
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u32 gpe1_blk;
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u8 pm1_evt_len;
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u8 pm1_cnt_len;
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u8 pm2_cnt_len;
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u8 pm_tmr_len;
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u8 gpe0_blk_len;
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u8 gpe1_blk_len;
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u8 gpe1_base;
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u8 cst_cnt;
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u16 p_lvl2_lat;
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u16 p_lvl3_lat;
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u16 flush_size;
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u16 flush_stride;
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u8 duty_offset;
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u8 duty_width;
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u8 day_alrm;
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u8 mon_alrm;
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u8 century;
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u16 iapc_boot_arch;
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u8 res2;
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u32 flags;
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struct acpi_gen_regaddr reset_reg;
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u8 reset_value;
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u8 res3;
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u8 res4;
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u8 res5;
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u32 x_firmware_ctl_l;
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u32 x_firmware_ctl_h;
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u32 x_dsdt_l;
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u32 x_dsdt_h;
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struct acpi_gen_regaddr x_pm1a_evt_blk;
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struct acpi_gen_regaddr x_pm1b_evt_blk;
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struct acpi_gen_regaddr x_pm1a_cnt_blk;
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struct acpi_gen_regaddr x_pm1b_cnt_blk;
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struct acpi_gen_regaddr x_pm2_cnt_blk;
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struct acpi_gen_regaddr x_pm_tmr_blk;
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struct acpi_gen_regaddr x_gpe0_blk;
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struct acpi_gen_regaddr x_gpe1_blk;
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};
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/* FACS flags */
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#define ACPI_FACS_S4BIOS_F (1 << 0)
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#define ACPI_FACS_64BIT_WAKE_F (1 << 1)
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/* FACS (Firmware ACPI Control Structure) */
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struct acpi_facs {
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char signature[4]; /* "FACS" */
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u32 length; /* Length in bytes (>= 64) */
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u32 hardware_signature; /* Hardware signature */
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u32 firmware_waking_vector; /* Firmware waking vector */
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u32 global_lock; /* Global lock */
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u32 flags; /* FACS flags */
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u32 x_firmware_waking_vector_l; /* X FW waking vector, low */
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u32 x_firmware_waking_vector_h; /* X FW waking vector, high */
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u8 version; /* Version 2 */
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u8 res1[3];
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u32 ospm_flags; /* OSPM enabled flags */
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u8 res2[24];
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};
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/* MADT flags */
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#define ACPI_MADT_PCAT_COMPAT (1 << 0)
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/* MADT (Multiple APIC Description Table) */
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struct acpi_madt {
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struct acpi_table_header header;
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u32 lapic_addr; /* Local APIC address */
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u32 flags; /* Multiple APIC flags */
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};
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/* MADT: APIC Structure Type*/
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enum acpi_apic_types {
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ACPI_APIC_LAPIC = 0, /* Processor local APIC */
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ACPI_APIC_IOAPIC, /* I/O APIC */
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ACPI_APIC_IRQ_SRC_OVERRIDE, /* Interrupt source override */
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ACPI_APIC_NMI_SRC, /* NMI source */
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ACPI_APIC_LAPIC_NMI, /* Local APIC NMI */
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ACPI_APIC_LAPIC_ADDR_OVERRIDE, /* Local APIC address override */
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ACPI_APIC_IOSAPIC, /* I/O SAPIC */
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ACPI_APIC_LSAPIC, /* Local SAPIC */
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ACPI_APIC_PLATFORM_IRQ_SRC, /* Platform interrupt sources */
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ACPI_APIC_LX2APIC, /* Processor local x2APIC */
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ACPI_APIC_LX2APIC_NMI, /* Local x2APIC NMI */
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};
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/* MADT: Processor Local APIC Structure */
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#define LOCAL_APIC_FLAG_ENABLED (1 << 0)
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struct acpi_madt_lapic {
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u8 type; /* Type (0) */
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u8 length; /* Length in bytes (8) */
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u8 processor_id; /* ACPI processor ID */
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u8 apic_id; /* Local APIC ID */
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u32 flags; /* Local APIC flags */
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};
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/* MADT: I/O APIC Structure */
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struct acpi_madt_ioapic {
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u8 type; /* Type (1) */
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u8 length; /* Length in bytes (12) */
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u8 ioapic_id; /* I/O APIC ID */
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u8 reserved;
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u32 ioapic_addr; /* I/O APIC address */
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u32 gsi_base; /* Global system interrupt base */
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};
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/* MADT: Interrupt Source Override Structure */
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struct __packed acpi_madt_irqoverride {
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u8 type; /* Type (2) */
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u8 length; /* Length in bytes (10) */
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u8 bus; /* ISA (0) */
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u8 source; /* Bus-relative int. source (IRQ) */
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u32 gsirq; /* Global system interrupt */
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u16 flags; /* MPS INTI flags */
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};
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/* MADT: Local APIC NMI Structure */
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struct __packed acpi_madt_lapic_nmi {
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u8 type; /* Type (4) */
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u8 length; /* Length in bytes (6) */
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u8 processor_id; /* ACPI processor ID */
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u16 flags; /* MPS INTI flags */
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u8 lint; /* Local APIC LINT# */
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};
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/* MCFG (PCI Express MMIO config space BAR description table) */
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struct acpi_mcfg {
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struct acpi_table_header header;
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u8 reserved[8];
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};
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struct acpi_mcfg_mmconfig {
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u32 base_address_l;
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u32 base_address_h;
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u16 pci_segment_group_number;
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u8 start_bus_number;
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u8 end_bus_number;
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u8 reserved[4];
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};
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/* PM1_CNT bit defines */
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#define PM1_CNT_SCI_EN (1 << 0)
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/* These can be used by the target port */
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void acpi_fill_header(struct acpi_table_header *header, char *signature);
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void acpi_create_fadt(struct acpi_fadt *fadt, struct acpi_facs *facs,
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void *dsdt);
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int acpi_create_madt_lapics(u32 current);
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int acpi_create_madt_ioapic(struct acpi_madt_ioapic *ioapic, u8 id,
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u32 addr, u32 gsi_base);
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int acpi_create_madt_irqoverride(struct acpi_madt_irqoverride *irqoverride,
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u8 bus, u8 source, u32 gsirq, u16 flags);
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int acpi_create_madt_lapic_nmi(struct acpi_madt_lapic_nmi *lapic_nmi,
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u8 cpu, u16 flags, u8 lint);
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u32 acpi_fill_madt(u32 current);
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u32 write_acpi_tables(u32 start);
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