[U-Boot] [U-BOOT PATCH v3 2/4] x86: Added support for ACPI table generation at the generic layer.
Saket Sinha
saket.sinha89 at gmail.com
Thu Aug 13 05:01:01 CEST 2015
Signed-off-by: Saket Sinha <saket.sinha89 at gmail.com>
---
arch/x86/include/asm/acpi_table.h | 387 +++++++++++++++++++++++++++++++++++
arch/x86/lib/Makefile | 1 +
arch/x86/lib/acpi_table.c | 413 ++++++++++++++++++++++++++++++++++++++
arch/x86/lib/tables.c | 5 +
scripts/Makefile.lib | 11 +
5 files changed, 817 insertions(+)
create mode 100644 arch/x86/include/asm/acpi_table.h
create mode 100644 arch/x86/lib/acpi_table.c
diff --git a/arch/x86/include/asm/acpi_table.h b/arch/x86/include/asm/acpi_table.h
new file mode 100644
index 0000000..7b52e7d
--- /dev/null
+++ b/arch/x86/include/asm/acpi_table.h
@@ -0,0 +1,387 @@
+#include <linux/string.h>
+#include <malloc.h>
+#include <common.h>
+#include <asm/post.h>
+
+#define RSDP_SIG "RSD PTR " /* RSDT pointer signature */
+#define ACPI_TABLE_CREATOR "UBOOT " /* Must be exactly 8 bytes long! */
+#define OEM_ID "UBOOT " /* Must be exactly 6 bytes long! */
+#define ASLC "UBOO" /* Must be exactly 4 bytes long! */
+
+#define APM_CNT 0xb2
+#define APM_CNT_CST_CONTROL 0x85
+#define APM_CNT_PST_CONTROL 0x80
+#define APM_CNT_ACPI_DISABLE 0x1e
+#define APM_CNT_ACPI_ENABLE 0xe1
+#define APM_CNT_MBI_UPDATE 0xeb
+#define APM_CNT_GNVS_UPDATE 0xea
+#define APM_CNT_FINALIZE 0xcb
+#define APM_CNT_LEGACY 0xcc
+#define APM_STS 0xb3
+
+
+#define MP_IRQ_POLARITY_DEFAULT 0x0
+#define MP_IRQ_POLARITY_HIGH 0x1
+#define MP_IRQ_POLARITY_LOW 0x3
+#define MP_IRQ_POLARITY_MASK 0x3
+#define MP_IRQ_TRIGGER_DEFAULT 0x0
+#define MP_IRQ_TRIGGER_EDGE 0x4
+#define MP_IRQ_TRIGGER_LEVEL 0xc
+#define MP_IRQ_TRIGGER_MASK 0xc
+
+#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
+
+#define ILB_BASE_ADDRESS 0xfed08000
+#define ILB_BASE_SIZE 0x400
+
+enum bus_type {
+ PIC = 0,
+ APIC = 2,
+ ETHIGH = 5
+};
+
+
+typedef struct acpi_gen_regaddr {
+ u8 space_id; /* Address space ID */
+ u8 bit_width; /* Register size in bits */
+ u8 bit_offset; /* Register bit offset */
+ union {
+ u8 resv; /* Reserved in ACPI 2.0 - 2.0b */
+ u8 access_size; /* Access size in ACPI 2.0c/3.0/4.0/5.0 */
+ };
+ u32 addrl; /* Register address, low 32 bits */
+ u32 addrh; /* Register address, high 32 bits */
+} __attribute__ ((packed)) acpi_addr_t;
+
+
+/* RSDP (Root System Description Pointer) */
+struct __packed acpi_rsdp {
+ char signature[8]; /* RSDP signature */
+ u8 checksum; /* Checksum of the first 20 bytes */
+ char oem_id[6]; /* OEM ID */
+ u8 revision; /* 0 for ACPI 1.0, 2 for ACPI 2.0/3.0/4.0 */
+ u32 rsdt_address; /* Physical address of RSDT (32 bits) */
+ u32 length; /* Total RSDP length (incl. extended part) */
+ u64 xsdt_address; /* Physical address of XSDT (64 bits) */
+ u8 ext_checksum; /* Checksum of the whole table */
+ u8 reserved[3];
+};
+/* Note: ACPI 1.0 didn't have length, xsdt_address, and ext_checksum. */
+
+enum acpi_address_space_type {
+ ACPI_ADDRESS_SPACE_MEMORY = 0, /* System memory */
+ ACPI_ADDRESS_SPACE_IO = 1, /* System I/O */
+ ACPI_ADDRESS_SPACE_PCI = 2, /* PCI config space */
+ ACPI_ADDRESS_SPACE_EC = 3, /* Embedded controller */
+ ACPI_ADDRESS_SPACE_SMBUS = 4, /* SMBus */
+ ACPI_ADDRESS_SPACE_PCC = 0x0A, /* Platform Comm. Channel */
+ ACPI_ADDRESS_SPACE_FIXED = 0x7f /* Functional fixed hardware */
+};
+
+#define ACPI_FFIXEDHW_VENDOR_INTEL 1 /* Intel */
+#define ACPI_FFIXEDHW_CLASS_HLT 0 /* C1 Halt */
+#define ACPI_FFIXEDHW_CLASS_IO_HLT 1 /* C1 I/O then Halt */
+#define ACPI_FFIXEDHW_CLASS_MWAIT 2 /* MWAIT Native C-state */
+#define ACPI_FFIXEDHW_FLAG_HW_COORD 1 /* Hardware Coordination bit */
+#define ACPI_FFIXEDHW_FLAG_BM_STS 2 /* BM_STS avoidance bit */
+/* 0x80-0xbf: Reserved */
+/* 0xc0-0xff: OEM defined */
+
+/* Access size definitions for Generic address structure */
+enum acpi_address_space_size {
+ ACPI_ACCESS_SIZE_UNDEFINED = 0, /* Undefined (legacy reasons) */
+ ACPI_ACCESS_SIZE_BYTE_ACCESS = 1,
+ ACPI_ACCESS_SIZE_WORD_ACCESS = 2,
+ ACPI_ACCESS_SIZE_DWORD_ACCESS = 3,
+ ACPI_ACCESS_SIZE_QWORD_ACCESS = 4
+};
+
+/* Generic ACPI header, provided by (almost) all tables */
+typedef struct acpi_table_header {
+ char signature[4]; /* ACPI signature (4 ASCII characters) */
+ u32 length; /* Table length in bytes (incl. header) */
+ u8 revision; /* Table version (not ACPI version!) */
+ u8 checksum; /* To make sum of entire table == 0 */
+ char oem_id[6]; /* OEM identification */
+ char oem_table_id[8]; /* OEM table identification */
+ u32 oem_revision; /* OEM revision number */
+ char asl_compiler_id[4]; /* ASL compiler vendor ID */
+ u32 asl_compiler_revision; /* ASL compiler revision number */
+} __attribute__ ((packed)) acpi_header_t;
+
+/* A maximum number of 32 ACPI tables ought to be enough for now. */
+#define MAX_ACPI_TABLES 32
+
+/* RSDT (Root System Description Table) */
+struct __packed acpi_rsdt {
+ struct acpi_table_header header;
+ u32 entry[MAX_ACPI_TABLES];
+};
+
+/* XSDT (Extended System Description Table) */
+struct __packed acpi_xsdt {
+ struct acpi_table_header header;
+ u64 entry[MAX_ACPI_TABLES];
+};
+
+/* MCFG (PCI Express MMIO config space BAR description table) */
+struct __packed acpi_mcfg {
+ struct acpi_table_header header;
+ u8 reserved[8];
+};
+
+struct __packed acpi_mcfg_mmconfig {
+ u32 base_address;
+ u32 base_reserved;
+ u16 pci_segment_group_number;
+ u8 start_bus_number;
+ u8 end_bus_number;
+ u8 reserved[4];
+};
+
+/* MADT (Multiple APIC Description Table) */
+struct __packed acpi_madt {
+ struct acpi_table_header header;
+ u32 lapic_addr; /* Local APIC address */
+ u32 flags; /* Multiple APIC flags */
+} __attribute__ ((packed)) acpi_madt_t;
+
+enum dev_scope_type {
+ SCOPE_PCI_ENDPOINT = 1,
+ SCOPE_PCI_SUB = 2,
+ SCOPE_IOAPIC = 3,
+ SCOPE_MSI_HPET = 4
+};
+
+typedef struct dev_scope {
+ u8 type;
+ u8 length;
+ u8 reserved[2];
+ u8 enumeration;
+ u8 start_bus;
+ struct {
+ u8 dev;
+ u8 fn;
+ } __attribute__((packed)) path[0];
+} __attribute__ ((packed)) dev_scope_t;
+
+/* MADT: APIC Structure Types */
+/* TODO: Convert to ALLCAPS. */
+enum acpi_apic_types {
+ LocalApic = 0, /* Processor local APIC */
+ IOApic = 1, /* I/O APIC */
+ IRQSourceOverride = 2, /* Interrupt source override */
+ NMIType = 3, /* NMI source */
+ LocalApicNMI = 4, /* Local APIC NMI */
+ LApicAddressOverride = 5, /* Local APIC address override */
+ IOSApic = 6, /* I/O SAPIC */
+ LocalSApic = 7, /* Local SAPIC */
+ PlatformIRQSources = 8, /* Platform interrupt sources */
+ Localx2Apic = 9, /* Processor local x2APIC */
+ Localx2ApicNMI = 10, /* Local x2APIC NMI */
+ /* 0x0b-0x7f: Reserved */
+ /* 0x80-0xff: Reserved for OEM use */
+};
+
+/* MADT: Processor Local APIC Structure */
+struct __packed acpi_madt_lapic {
+ u8 type; /* Type (0) */
+ u8 length; /* Length in bytes (8) */
+ u8 processor_id; /* ACPI processor ID */
+ u8 apic_id; /* Local APIC ID */
+ u32 flags; /* Local APIC flags */
+};
+
+/* MADT: Local APIC NMI Structure */
+struct __packed acpi_madt_lapic_nmi {
+ u8 type; /* Type (4) */
+ u8 length; /* Length in bytes (6) */
+ u8 processor_id; /* ACPI processor ID */
+ u16 flags; /* MPS INTI flags */
+ u8 lint; /* Local APIC LINT# */
+};
+
+/* MADT: I/O APIC Structure */
+struct __packed acpi_madt_ioapic {
+ u8 type; /* Type (1) */
+ u8 length; /* Length in bytes (12) */
+ u8 ioapic_id; /* I/O APIC ID */
+ u8 reserved;
+ u32 ioapic_addr; /* I/O APIC address */
+ u32 gsi_base; /* Global system interrupt base */
+};
+
+/* MADT: Interrupt Source Override Structure */
+struct __packed acpi_madt_irqoverride {
+ u8 type; /* Type (2) */
+ u8 length; /* Length in bytes (10) */
+ u8 bus; /* ISA (0) */
+ u8 source; /* Bus-relative int. source (IRQ) */
+ u32 gsirq; /* Global system interrupt */
+ u16 flags; /* MPS INTI flags */
+};
+
+/* FADT (Fixed ACPI Description Table) */
+struct __packed acpi_fadt {
+ struct acpi_table_header header;
+ u32 firmware_ctrl;
+ u32 dsdt;
+ u8 model;
+ u8 preferred_pm_profile;
+ u16 sci_int;
+ u32 smi_cmd;
+ u8 acpi_enable;
+ u8 acpi_disable;
+ u8 s4bios_req;
+ u8 pstate_cnt;
+ u32 pm1a_evt_blk;
+ u32 pm1b_evt_blk;
+ u32 pm1a_cnt_blk;
+ u32 pm1b_cnt_blk;
+ u32 pm2_cnt_blk;
+ u32 pm_tmr_blk;
+ u32 gpe0_blk;
+ u32 gpe1_blk;
+ u8 pm1_evt_len;
+ u8 pm1_cnt_len;
+ u8 pm2_cnt_len;
+ u8 pm_tmr_len;
+ u8 gpe0_blk_len;
+ u8 gpe1_blk_len;
+ u8 gpe1_base;
+ u8 cst_cnt;
+ u16 p_lvl2_lat;
+ u16 p_lvl3_lat;
+ u16 flush_size;
+ u16 flush_stride;
+ u8 duty_offset;
+ u8 duty_width;
+ u8 day_alrm;
+ u8 mon_alrm;
+ u8 century;
+ u16 iapc_boot_arch;
+ u8 res2;
+ u32 flags;
+ struct acpi_gen_regaddr reset_reg;
+ u8 reset_value;
+ u8 res3;
+ u8 res4;
+ u8 res5;
+ u32 x_firmware_ctl_l;
+ u32 x_firmware_ctl_h;
+ u32 x_dsdt_l;
+ u32 x_dsdt_h;
+ struct acpi_gen_regaddr x_pm1a_evt_blk;
+ struct acpi_gen_regaddr x_pm1b_evt_blk;
+ struct acpi_gen_regaddr x_pm1a_cnt_blk;
+ struct acpi_gen_regaddr x_pm1b_cnt_blk;
+ struct acpi_gen_regaddr x_pm2_cnt_blk;
+ struct acpi_gen_regaddr x_pm_tmr_blk;
+ struct acpi_gen_regaddr x_gpe0_blk;
+ struct acpi_gen_regaddr x_gpe1_blk;
+};
+
+/* FADT TABLE Revision values */
+#define ACPI_FADT_REV_ACPI_1_0 1
+#define ACPI_FADT_REV_ACPI_2_0 3
+#define ACPI_FADT_REV_ACPI_3_0 4
+#define ACPI_FADT_REV_ACPI_4_0 4
+#define ACPI_FADT_REV_ACPI_5_0 5
+
+/* Flags for p_lvl2_lat and p_lvl3_lat */
+#define ACPI_FADT_C2_NOT_SUPPORTED 101
+#define ACPI_FADT_C3_NOT_SUPPORTED 1001
+
+/* FADT Feature Flags */
+#define ACPI_FADT_WBINVD (1 << 0)
+#define ACPI_FADT_WBINVD_FLUSH (1 << 1)
+#define ACPI_FADT_C1_SUPPORTED (1 << 2)
+#define ACPI_FADT_C2_MP_SUPPORTED (1 << 3)
+#define ACPI_FADT_POWER_BUTTON (1 << 4)
+#define ACPI_FADT_SLEEP_BUTTON (1 << 5)
+#define ACPI_FADT_FIXED_RTC (1 << 6)
+#define ACPI_FADT_S4_RTC_WAKE (1 << 7)
+#define ACPI_FADT_32BIT_TIMER (1 << 8)
+#define ACPI_FADT_DOCKING_SUPPORTED (1 << 9)
+#define ACPI_FADT_RESET_REGISTER (1 << 10)
+#define ACPI_FADT_SEALED_CASE (1 << 11)
+#define ACPI_FADT_HEADLESS (1 << 12)
+#define ACPI_FADT_SLEEP_TYPE (1 << 13)
+#define ACPI_FADT_PCI_EXPRESS_WAKE (1 << 14)
+#define ACPI_FADT_PLATFORM_CLOCK (1 << 15)
+#define ACPI_FADT_S4_RTC_VALID (1 << 16)
+#define ACPI_FADT_REMOTE_POWER_ON (1 << 17)
+#define ACPI_FADT_APIC_CLUSTER (1 << 18)
+#define ACPI_FADT_APIC_PHYSICAL (1 << 19)
+/* Bits 20-31: reserved ACPI 3.0 & 4.0 */
+#define ACPI_FADT_HW_REDUCED_ACPI (1 << 20)
+#define ACPI_FADT_LOW_PWR_IDLE_S0 (1 << 21)
+/* bits 22-31: reserved ACPI 5.0 */
+
+/* FADT Boot Architecture Flags */
+enum acpi_fadt_boot_flags {
+ ACPI_FADT_LEGACY_DEVICES = (1 << 0),
+ ACPI_FADT_8042 = (1 << 1),
+ ACPI_FADT_VGA_NOT_PRESENT = (1 << 2),
+ ACPI_FADT_MSI_NOT_SUPPORTED = (1 << 3),
+ ACPI_FADT_NO_PCIE_ASPM_CONTROL = (1 << 4),
+ ACPI_FADT_LEGACY_FREE = 0x00 /* No legacy devices (including 8042) */
+};
+/* FADT Preferred Power Management Profile */
+enum acpi_preferred_pm_profiles {
+ PM_UNSPECIFIED = 0,
+ PM_DESKTOP = 1,
+ PM_MOBILE = 2,
+ PM_WORKSTATION = 3,
+ PM_ENTERPRISE_SERVER = 4,
+ PM_SOHO_SERVER = 5,
+ PM_APPLIANCE_PC = 6,
+ PM_PERFORMANCE_SERVER = 7,
+ PM_TABLET = 8, /* ACPI 5.0 */
+};
+
+/* FACS (Firmware ACPI Control Structure) */
+struct __packed acpi_facs {
+ char signature[4]; /* "FACS" */
+ u32 length; /* Length in bytes (>= 64) */
+ u32 hardware_signature; /* Hardware signature */
+ u32 firmware_waking_vector; /* Firmware waking vector */
+ u32 global_lock; /* Global lock */
+ u32 flags; /* FACS flags */
+ u32 x_firmware_waking_vector_l; /* X FW waking vector, low */
+ u32 x_firmware_waking_vector_h; /* X FW waking vector, high */
+ u8 version; /* ACPI 4.0: 2 */
+ u8 resv[31]; /* FIXME: 4.0: ospm_flags */
+};
+
+/* FACS flags */
+#define ACPI_FACS_S4BIOS_F (1 << 0)
+#define ACPI_FACS_64BIT_WAKE_F (1 << 1)
+/* Bits 31..2: reserved */
+
+/* These can be used by the target port. */
+
+void acpi_add_table(struct acpi_rsdp *rsdp, void *table);
+unsigned long write_acpi_tables(unsigned long start);
+int acpi_create_madt_lapic(struct acpi_madt_lapic *lapic, u8 cpu, u8 apic);
+unsigned long acpi_create_madt_lapics(unsigned long current);
+int acpi_create_madt_ioapic(struct acpi_madt_ioapic *ioapic, u8 id, u32 addr, u32 gsi_base);
+int acpi_create_madt_irqoverride(struct acpi_madt_irqoverride *irqoverride, u8 bus, u8 source, u32 gsirq, u16 flags);
+unsigned long acpi_fill_mcfg(unsigned long current);
+unsigned long acpi_fill_madt(unsigned long current);
+void acpi_create_fadt(struct acpi_fadt *fadt, struct acpi_facs *facs, void *dsdt);
+int acpi_create_mcfg_mmconfig(struct acpi_mcfg_mmconfig *mmconfig, u32 base, u16 seg_nr, u8 start, u8 end);
+int acpi_create_madt_lapic_nmi(struct acpi_madt_lapic_nmi *lapic_nmi, u8 cpu, u16 flags, u8 lint);
+static inline uint32_t read32(const void *addr)
+{
+ return *(volatile uint32_t *)addr;
+}
+
diff --git a/arch/x86/lib/Makefile b/arch/x86/lib/Makefile
index dcfe9ee..6ecd6db 100644
--- a/arch/x86/lib/Makefile
+++ b/arch/x86/lib/Makefile
@@ -30,6 +30,7 @@ obj-y += physmem.o
obj-$(CONFIG_X86_RAMTEST) += ramtest.o
obj-y += sfi.o
obj-y += string.o
+obj-$(CONFIG_GENERATE_ACPI_TABLE) += acpi_table.o
obj-y += tables.o
obj-$(CONFIG_SYS_X86_TSC_TIMER) += tsc_timer.o
obj-$(CONFIG_CMD_ZBOOT) += zimage.o
diff --git a/arch/x86/lib/acpi_table.c b/arch/x86/lib/acpi_table.c
new file mode 100644
index 0000000..2e20317
--- /dev/null
+++ b/arch/x86/lib/acpi_table.c
@@ -0,0 +1,413 @@
+/*
+ * Copyright (C) 2015, Saket Sinha <saket.sinha89 at gmail.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <asm/acpi_table.h>
+#include <asm/cpu.h>
+#include <asm/ioapic.h>
+#include <asm/lapic.h>
+#include <asm/tables.h>
+#include <asm/pci.h>
+#include <cpu.h>
+#include <dm.h>
+#include <dm/uclass-internal.h>
+#include <dm/lists.h>
+
+extern const unsigned char AmlCode[];
+
+/**
+* Add an ACPI table to the RSDT (and XSDT) structure, recalculate length
+* and checksum.
+*/
+void acpi_add_table(struct acpi_rsdp *rsdp, void *table)
+{
+ int i, entries_num;
+ struct acpi_rsdt *rsdt;
+ struct acpi_xsdt *xsdt = NULL;
+
+ /* The RSDT is mandatory... */
+ rsdt = (struct acpi_rsdt *)rsdp->rsdt_address;
+
+ /* ...while the XSDT is not. */
+ if (rsdp->xsdt_address)
+ xsdt = (struct acpi_xsdt *)((u32)rsdp->xsdt_address);
+
+ /* This should always be MAX_ACPI_TABLES. */
+ entries_num = ARRAY_SIZE(rsdt->entry);
+
+ for (i = 0; i < entries_num; i++) {
+ if (rsdt->entry[i] == 0)
+ break;
+ }
+
+ if (i >= entries_num) {
+ debug("ACPI: Error: Could not add ACPI table, "
+ "too many tables.\n");
+ return;
+ }
+
+ /* Add table to the RSDT. */
+ rsdt->entry[i] = (u32)table;
+
+ /* Fix RSDT length or the kernel will assume invalid entries. */
+ rsdt->header.length = sizeof(acpi_header_t) + (sizeof(u32) * (i + 1));
+
+ /* Re-calculate checksum. */
+ rsdt->header.checksum = 0; /* Hope this won't get optimized away */
+ rsdt->header.checksum = table_compute_checksum((u8 *)rsdt, rsdt->header.length);
+
+ /*
+ * And now the same thing for the XSDT. We use the same index as for
+ * now we want the XSDT and RSDT to always be in sync in coreboot.
+ */
+ if (xsdt) {
+ /* Add table to the XSDT. */
+ xsdt->entry[i] = (u64)(u32)table;
+
+ /* Fix XSDT length. */
+ xsdt->header.length = sizeof(acpi_header_t) +
+ (sizeof(u64) * (i + 1));
+
+ /* Re-calculate checksum. */
+ xsdt->header.checksum = 0;
+ xsdt->header.checksum = table_compute_checksum((u8 *)xsdt,
+ xsdt->header.length);
+ }
+}
+
+int acpi_create_madt_lapic(struct acpi_madt_lapic *lapic, u8 cpu, u8 apic)
+{
+ lapic->type = 0; /* Local APIC structure */
+ lapic->length = sizeof(struct acpi_madt_lapic);
+ lapic->flags = (1 << 0); /* Processor/LAPIC enabled */
+ lapic->processor_id = cpu;
+ lapic->apic_id = apic;
+
+ return lapic->length;
+}
+
+unsigned long acpi_create_madt_lapics(unsigned long current)
+{
+ struct udevice *dev;
+
+ for (uclass_find_first_device(UCLASS_CPU, &dev);
+ dev;
+ uclass_find_next_device(&dev)) {
+ struct cpu_platdata *plat = dev_get_parent_platdata(dev);
+
+ current += acpi_create_madt_lapic((struct acpi_madt_lapic *)current, plat->cpu_id, plat->cpu_id);
+ }
+ return current;
+}
+
+int acpi_create_madt_ioapic(struct acpi_madt_ioapic *ioapic, u8 id, u32 addr,
+ u32 gsi_base)
+{
+ ioapic->type = 1; /* I/O APIC structure */
+ ioapic->length = sizeof(struct acpi_madt_ioapic);
+ ioapic->reserved = 0x00;
+ ioapic->gsi_base = gsi_base;
+ ioapic->ioapic_id = id;
+ ioapic->ioapic_addr = addr;
+
+ return ioapic->length;
+}
+
+int acpi_create_madt_irqoverride(struct acpi_madt_irqoverride *irqoverride,
+ u8 bus, u8 source, u32 gsirq, u16 flags)
+{
+ irqoverride->type = 2; /* Interrupt source override */
+ irqoverride->length = sizeof(struct acpi_madt_irqoverride);
+ irqoverride->bus = bus;
+ irqoverride->source = source;
+ irqoverride->gsirq = gsirq;
+ irqoverride->flags = flags;
+
+ return irqoverride->length;
+}
+
+int acpi_create_madt_lapic_nmi(struct acpi_madt_lapic_nmi *lapic_nmi, u8 cpu,
+ u16 flags, u8 lint)
+{
+ lapic_nmi->type = 4; /* Local APIC NMI structure */
+ lapic_nmi->length = sizeof(struct acpi_madt_lapic_nmi);
+ lapic_nmi->flags = flags;
+ lapic_nmi->processor_id = cpu;
+ lapic_nmi->lint = lint;
+
+ return lapic_nmi->length;
+}
+
+static void acpi_create_madt(struct acpi_madt *madt)
+{
+ acpi_header_t *header = &(madt->header);
+ unsigned long current = (unsigned long)madt + sizeof(struct acpi_madt);
+
+ memset((void *)madt, 0, sizeof(struct acpi_madt));
+
+ /* Fill out header fields. */
+ memcpy(header->signature, "APIC", 4);
+ memcpy(header->oem_id, OEM_ID, 6);
+ memcpy(header->oem_table_id, ACPI_TABLE_CREATOR, 8);
+ memcpy(header->asl_compiler_id, ASLC, 4);
+
+ header->length = sizeof(struct acpi_madt);
+ header->revision = 1; /* ACPI 1.0/2.0: 1, ACPI 3.0: 2, ACPI 4.0: 3 */
+
+ madt->lapic_addr = LAPIC_DEFAULT_BASE;
+ madt->flags = 0x1; /* PCAT_COMPAT */
+
+ current = acpi_fill_madt(current);
+
+ /* (Re)calculate length and checksum. */
+ header->length = current - (unsigned long)madt;
+
+ header->checksum = table_compute_checksum((void *)madt, header->length);
+}
+
+int acpi_create_mcfg_mmconfig(struct acpi_mcfg_mmconfig *mmconfig, u32 base,
+ u16 seg_nr, u8 start, u8 end)
+{
+ memset(mmconfig, 0, sizeof(*mmconfig));
+ mmconfig->base_address = base;
+ mmconfig->base_reserved = 0;
+ mmconfig->pci_segment_group_number = seg_nr;
+ mmconfig->start_bus_number = start;
+ mmconfig->end_bus_number = end;
+
+ return sizeof(struct acpi_mcfg_mmconfig);
+}
+
+/* MCFG is defined in the PCI Firmware Specification 3.0. */
+static void acpi_create_mcfg(struct acpi_mcfg *mcfg)
+{
+ acpi_header_t *header = &(mcfg->header);
+ unsigned long current = (unsigned long)mcfg + sizeof(struct acpi_mcfg);
+
+ memset((void *)mcfg, 0, sizeof(struct acpi_mcfg));
+
+ /* Fill out header fields. */
+ memcpy(header->signature, "MCFG", 4);
+ memcpy(header->oem_id, OEM_ID, 6);
+ memcpy(header->oem_table_id, ACPI_TABLE_CREATOR, 8);
+ memcpy(header->asl_compiler_id, ASLC, 4);
+
+ header->length = sizeof(struct acpi_mcfg);
+ header->revision = 1;
+
+ current = acpi_fill_mcfg(current);
+
+ /* (Re)calculate length and checksum. */
+ header->length = current - (unsigned long)mcfg;
+ header->checksum = table_compute_checksum((void *)mcfg, header->length);
+}
+
+static void acpi_create_facs(struct acpi_facs *facs)
+{
+ memset((void *)facs, 0, sizeof(struct acpi_facs));
+
+ memcpy(facs->signature, "FACS", 4);
+ facs->length = sizeof(struct acpi_facs);
+ facs->hardware_signature = 0;
+ facs->firmware_waking_vector = 0;
+ facs->global_lock = 0;
+ facs->flags = 0;
+ facs->x_firmware_waking_vector_l = 0;
+ facs->x_firmware_waking_vector_h = 0;
+ facs->version = 1; /* ACPI 1.0: 0, ACPI 2.0/3.0: 1, ACPI 4.0: 2 */
+}
+
+static void acpi_write_rsdt(struct acpi_rsdt *rsdt)
+{
+ acpi_header_t *header = &(rsdt->header);
+
+ /* Fill out header fields. */
+ memcpy(header->signature, "RSDT", 4);
+ memcpy(header->oem_id, OEM_ID, 6);
+ memcpy(header->oem_table_id, ACPI_TABLE_CREATOR, 8);
+ memcpy(header->asl_compiler_id, ASLC, 4);
+
+ header->length = sizeof(struct acpi_rsdt);
+ header->revision = 1; /* ACPI 1.0/2.0/3.0/4.0: 1 */
+
+ /* Entries are filled in later, we come with an empty set. */
+
+ /* Fix checksum. */
+ header->checksum = table_compute_checksum((void *)rsdt, sizeof(struct acpi_rsdt));
+}
+
+static void acpi_write_xsdt(struct acpi_xsdt *xsdt)
+{
+ acpi_header_t *header = &(xsdt->header);
+
+ /* Fill out header fields. */
+ memcpy(header->signature, "XSDT", 4);
+ memcpy(header->oem_id, OEM_ID, 6);
+ memcpy(header->oem_table_id, ACPI_TABLE_CREATOR, 8);
+ memcpy(header->asl_compiler_id, ASLC, 4);
+
+ header->length = sizeof(struct acpi_xsdt);
+ header->revision = 1; /* ACPI 1.0: N/A, 2.0/3.0/4.0: 1 */
+
+ /* Entries are filled in later, we come with an empty set. */
+
+ /* Fix checksum. */
+ header->checksum = table_compute_checksum((void *)xsdt, sizeof(struct acpi_xsdt));
+}
+
+static void acpi_write_rsdp(struct acpi_rsdp *rsdp, struct acpi_rsdt *rsdt, struct acpi_xsdt *xsdt)
+{
+ memset(rsdp, 0, sizeof(struct acpi_rsdp));
+
+ memcpy(rsdp->signature, RSDP_SIG, 8);
+ memcpy(rsdp->oem_id, OEM_ID, 6);
+
+ rsdp->length = sizeof(struct acpi_rsdp);
+ rsdp->rsdt_address = (u32)rsdt;
+
+ /*
+ * Revision: ACPI 1.0: 0, ACPI 2.0/3.0/4.0: 2.
+ *
+ * Some OSes expect an XSDT to be present for RSD PTR revisions >= 2.
+ * If we don't have an ACPI XSDT, force ACPI 1.0 (and thus RSD PTR
+ * revision 0).
+ */
+ if (xsdt == NULL) {
+ rsdp->revision = 0;
+ } else {
+ rsdp->xsdt_address = (u64)(u32)xsdt;
+ rsdp->revision = 2;
+ }
+
+ /* Calculate checksums. */
+ rsdp->checksum = table_compute_checksum((void *)rsdp, 20);
+ rsdp->ext_checksum = table_compute_checksum((void *)rsdp, sizeof(struct acpi_rsdp));
+}
+
+static void acpi_create_ssdt_generator(acpi_header_t *ssdt, const char *oem_table_id)
+{
+ unsigned long current = (unsigned long)ssdt + sizeof(acpi_header_t);
+
+ memset((void *)ssdt, 0, sizeof(acpi_header_t));
+
+ memcpy(&ssdt->signature, "SSDT", 4);
+ ssdt->revision = 2; /* ACPI 1.0/2.0: ?, ACPI 3.0/4.0: 2 */
+ memcpy(&ssdt->oem_id, OEM_ID, 6);
+ memcpy(&ssdt->oem_table_id, oem_table_id, 8);
+ ssdt->oem_revision = 42;
+ memcpy(&ssdt->asl_compiler_id, ASLC, 4);
+ ssdt->asl_compiler_revision = 42;
+ ssdt->length = sizeof(acpi_header_t);
+
+ /* (Re)calculate length and checksum. */
+ ssdt->length = current - (unsigned long)ssdt;
+ ssdt->checksum = table_compute_checksum((void *)ssdt, ssdt->length);
+}
+
+
+#define ALIGN_CURRENT current = (ALIGN(current, 16))
+unsigned long write_acpi_tables(unsigned long start)
+{
+ unsigned long current;
+ struct acpi_rsdp *rsdp;
+ struct acpi_rsdt *rsdt;
+ struct acpi_xsdt *xsdt;
+ struct acpi_facs *facs;
+ acpi_header_t *dsdt;
+ struct acpi_fadt *fadt;
+ struct acpi_mcfg *mcfg;
+ struct acpi_madt *madt;
+ acpi_header_t *ssdt;
+
+ current = start;
+
+ /* Align ACPI tables to 16byte */
+ ALIGN_CURRENT;
+
+ debug("ACPI: Writing ACPI tables at %lx.\n", start);
+
+ /* We need at least an RSDP and an RSDT Table */
+ rsdp = (struct acpi_rsdp *) current;
+ current += sizeof(struct acpi_rsdp);
+ ALIGN_CURRENT;
+ rsdt = (struct acpi_rsdt *) current;
+ current += sizeof(struct acpi_rsdt);
+ ALIGN_CURRENT;
+ xsdt = (struct acpi_xsdt *) current;
+ current += sizeof(struct acpi_xsdt);
+ ALIGN_CURRENT;
+
+ /* clear all table memory */
+ memset((void *) start, 0, current - start);
+
+ acpi_write_rsdp(rsdp, rsdt, xsdt);
+ acpi_write_rsdt(rsdt);
+ acpi_write_xsdt(xsdt);
+
+ debug("ACPI: * FACS\n");
+ facs = (struct acpi_facs *) current;
+ current += sizeof(struct acpi_facs);
+ ALIGN_CURRENT;
+
+ acpi_create_facs(facs);
+
+ debug("ACPI: * DSDT\n");
+ dsdt = (acpi_header_t *) current;
+ memcpy(dsdt, &AmlCode, sizeof(acpi_header_t));
+ if (dsdt->length >= sizeof(acpi_header_t)) {
+ current += sizeof(acpi_header_t);
+ memcpy((char *)current,
+ (char *)&AmlCode + sizeof(acpi_header_t),
+ dsdt->length - sizeof(acpi_header_t));
+ current += dsdt->length - sizeof(acpi_header_t);
+
+ /* (Re)calculate length and checksum. */
+ dsdt->length = current - (unsigned long)dsdt;
+ dsdt->checksum = 0;
+ dsdt->checksum = table_compute_checksum((void *)dsdt, dsdt->length);
+ }
+ ALIGN_CURRENT;
+
+ debug("ACPI: * FADT\n");
+ fadt = (struct acpi_fadt *) current;
+ current += sizeof(struct acpi_fadt);
+ ALIGN_CURRENT;
+ acpi_create_fadt(fadt, facs, dsdt);
+ acpi_add_table(rsdp, fadt);
+
+ debug("ACPI: * MCFG\n");
+ mcfg = (struct acpi_mcfg *) current;
+ acpi_create_mcfg(mcfg);
+ if (mcfg->header.length > sizeof(struct acpi_mcfg)) {
+ current += mcfg->header.length;
+ ALIGN_CURRENT;
+ acpi_add_table(rsdp, mcfg);
+ }
+
+ debug("ACPI: * MADT\n");
+ madt = (struct acpi_madt *) current;
+ acpi_create_madt(madt);
+ if (madt->header.length > sizeof(struct acpi_madt)) {
+ current += madt->header.length;
+ acpi_add_table(rsdp, madt);
+ }
+ ALIGN_CURRENT;
+
+ debug("ACPI: * SSDT\n");
+ ssdt = (acpi_header_t *)current;
+ acpi_create_ssdt_generator(ssdt, ACPI_TABLE_CREATOR);
+ if (ssdt->length > sizeof(acpi_header_t)) {
+ current += ssdt->length;
+ acpi_add_table(rsdp, ssdt);
+ ALIGN_CURRENT;
+ }
+
+
+ debug("current = %lx\n", current);
+
+ debug("ACPI: done.\n");
+ return current;
+}
+
diff --git a/arch/x86/lib/tables.c b/arch/x86/lib/tables.c
index 75ffbc1..f15b2e2 100644
--- a/arch/x86/lib/tables.c
+++ b/arch/x86/lib/tables.c
@@ -8,6 +8,7 @@
#include <asm/sfi.h>
#include <asm/mpspec.h>
#include <asm/tables.h>
+#include <asm/acpi_table.h>
u8 table_compute_checksum(void *v, int len)
{
@@ -51,4 +52,8 @@ void write_tables(void)
rom_table_end = write_mp_table(rom_table_end);
rom_table_end = ALIGN(rom_table_end, 1024);
#endif
+#ifdef CONFIG_GENERATE_ACPI_TABLE
+ rom_table_end = write_acpi_tables(rom_table_end);
+ rom_table_end = ALIGN(rom_table_end, 1024);
+#endif
}
diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib
index 1c949fc..c259683 100644
--- a/scripts/Makefile.lib
+++ b/scripts/Makefile.lib
@@ -297,6 +297,17 @@ $(obj)/%.dtb: $(src)/%.dts FORCE
dtc-tmp = $(subst $(comma),_,$(dot-target).dts.tmp)
+# ACPI
+# ---------------------------------------------------------------------------
+quiet_cmd_acpi_c_asl= ASL $@
+cmd_acpi_c_asl= \
+ $(CPP) -x assembler-with-cpp -P -o $<.tmp $<; \
+ iasl -tc -p $< -tc $<.tmp; \
+ mv $(patsubst %.asl,%.hex,$<) $@
+
+$(obj)/%.c: $(src)/%.asl
+ $(call cmd,acpi_c_asl)
+
# Bzip2
# ---------------------------------------------------------------------------
--
2.1.4
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