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-rw-r--r--arch/x86/lib/acpi_table.c380
1 files changed, 179 insertions, 201 deletions
diff --git a/arch/x86/lib/acpi_table.c b/arch/x86/lib/acpi_table.c
index 790f6fbd0f..ffb4678e51 100644
--- a/arch/x86/lib/acpi_table.c
+++ b/arch/x86/lib/acpi_table.c
@@ -2,6 +2,7 @@
* Based on acpi.c from coreboot
*
* Copyright (C) 2015, Saket Sinha <saket.sinha89@gmail.com>
+ * Copyright (C) 2016, Bin Meng <bmeng.cn@gmail.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
@@ -10,25 +11,92 @@
#include <cpu.h>
#include <dm.h>
#include <dm/uclass-internal.h>
-#include <dm/lists.h>
#include <asm/acpi_table.h>
-#include <asm/cpu.h>
-#include <asm/ioapic.h>
+#include <asm/io.h>
#include <asm/lapic.h>
#include <asm/tables.h>
-#include <asm/pci.h>
/*
- * IASL compiles the dsdt entries and
- * writes the hex values to AmlCode array.
- * CamelCase cannot be handled here.
+ * IASL compiles the dsdt entries and writes the hex values
+ * to a C array AmlCode[] (see dsdt.c).
*/
extern const unsigned char AmlCode[];
+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 = ACPI_RSDP_REV_ACPI_1_0;
+ } else {
+ rsdp->xsdt_address = (u64)(u32)xsdt;
+ rsdp->revision = ACPI_RSDP_REV_ACPI_2_0;
+ }
+
+ /* Calculate checksums */
+ rsdp->checksum = table_compute_checksum((void *)rsdp, 20);
+ rsdp->ext_checksum = table_compute_checksum((void *)rsdp,
+ sizeof(struct acpi_rsdp));
+}
+
+void acpi_fill_header(struct acpi_table_header *header, char *signature)
+{
+ memcpy(header->signature, signature, 4);
+ memcpy(header->oem_id, OEM_ID, 6);
+ memcpy(header->oem_table_id, OEM_TABLE_ID, 8);
+ memcpy(header->aslc_id, ASLC_ID, 4);
+}
+
+static void acpi_write_rsdt(struct acpi_rsdt *rsdt)
+{
+ struct acpi_table_header *header = &(rsdt->header);
+
+ /* Fill out header fields */
+ acpi_fill_header(header, "RSDT");
+ header->length = sizeof(struct acpi_rsdt);
+ header->revision = 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)
+{
+ struct acpi_table_header *header = &(xsdt->header);
+
+ /* Fill out header fields */
+ acpi_fill_header(header, "XSDT");
+ header->length = sizeof(struct acpi_xsdt);
+ header->revision = 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));
+}
+
/**
-* Add an ACPI table to the RSDT (and XSDT) structure, recalculate length
-* and checksum.
-*/
+ * Add an ACPI table to the RSDT (and XSDT) structure, recalculate length
+ * and checksum.
+ */
static void acpi_add_table(struct acpi_rsdp *rsdp, void *table)
{
int i, entries_num;
@@ -50,7 +118,7 @@ static void acpi_add_table(struct acpi_rsdp *rsdp, void *table)
}
if (i >= entries_num) {
- debug("ACPI: Error: too many tables.\n");
+ debug("ACPI: Error: too many tables\n");
return;
}
@@ -58,12 +126,13 @@ static void acpi_add_table(struct acpi_rsdp *rsdp, void *table)
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));
+ rsdt->header.length = sizeof(struct acpi_table_header) +
+ (sizeof(u32) * (i + 1));
/* Re-calculate checksum */
rsdt->header.checksum = 0;
rsdt->header.checksum = table_compute_checksum((u8 *)rsdt,
- rsdt->header.length);
+ rsdt->header.length);
/*
* And now the same thing for the XSDT. We use the same index as for
@@ -74,8 +143,8 @@ static void acpi_add_table(struct acpi_rsdp *rsdp, void *table)
xsdt->entry[i] = (u64)(u32)table;
/* Fix XSDT length */
- xsdt->header.length = sizeof(acpi_header_t) +
- (sizeof(u64) * (i + 1));
+ xsdt->header.length = sizeof(struct acpi_table_header) +
+ (sizeof(u64) * (i + 1));
/* Re-calculate checksum */
xsdt->header.checksum = 0;
@@ -84,38 +153,56 @@ static void acpi_add_table(struct acpi_rsdp *rsdp, void *table)
}
}
+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;
+}
+
static int acpi_create_madt_lapic(struct acpi_madt_lapic *lapic,
- u8 cpu, u8 apic)
+ u8 cpu, u8 apic)
{
- lapic->type = LOCALAPIC; /* Local APIC structure */
+ lapic->type = ACPI_APIC_LAPIC;
lapic->length = sizeof(struct acpi_madt_lapic);
- lapic->flags = LOCAL_APIC_FLAG_ENABLED; /* Processor/LAPIC enabled */
+ lapic->flags = LOCAL_APIC_FLAG_ENABLED;
lapic->processor_id = cpu;
lapic->apic_id = apic;
return lapic->length;
}
-unsigned long acpi_create_madt_lapics(unsigned long current)
+int acpi_create_madt_lapics(u32 current)
{
struct udevice *dev;
+ int length = 0;
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(
+ length += acpi_create_madt_lapic(
(struct acpi_madt_lapic *)current,
plat->cpu_id, plat->cpu_id);
- }
- return current;
+ current += length;
+ }
+
+ return length;
}
-int acpi_create_madt_ioapic(struct acpi_madt_ioapic *ioapic, u8 id, u32 addr,
- u32 gsi_base)
+int acpi_create_madt_ioapic(struct acpi_madt_ioapic *ioapic, u8 id,
+ u32 addr, u32 gsi_base)
{
- ioapic->type = IOAPIC;
+ ioapic->type = ACPI_APIC_IOAPIC;
ioapic->length = sizeof(struct acpi_madt_ioapic);
ioapic->reserved = 0x00;
ioapic->gsi_base = gsi_base;
@@ -126,9 +213,9 @@ int acpi_create_madt_ioapic(struct acpi_madt_ioapic *ioapic, u8 id, u32 addr,
}
int acpi_create_madt_irqoverride(struct acpi_madt_irqoverride *irqoverride,
- u8 bus, u8 source, u32 gsirq, u16 flags)
+ u8 bus, u8 source, u32 gsirq, u16 flags)
{
- irqoverride->type = IRQSOURCEOVERRIDE;
+ irqoverride->type = ACPI_APIC_IRQ_SRC_OVERRIDE;
irqoverride->length = sizeof(struct acpi_madt_irqoverride);
irqoverride->bus = bus;
irqoverride->source = source;
@@ -139,9 +226,9 @@ int acpi_create_madt_irqoverride(struct acpi_madt_irqoverride *irqoverride,
}
int acpi_create_madt_lapic_nmi(struct acpi_madt_lapic_nmi *lapic_nmi,
- u8 cpu, u16 flags, u8 lint)
+ u8 cpu, u16 flags, u8 lint)
{
- lapic_nmi->type = LOCALNMITYPE;
+ lapic_nmi->type = ACPI_APIC_LAPIC_NMI;
lapic_nmi->length = sizeof(struct acpi_madt_lapic_nmi);
lapic_nmi->flags = flags;
lapic_nmi->processor_id = cpu;
@@ -150,45 +237,35 @@ int acpi_create_madt_lapic_nmi(struct acpi_madt_lapic_nmi *lapic_nmi,
return lapic_nmi->length;
}
-static void fill_header(acpi_header_t *header, char *signature, int length)
-{
- memcpy(header->signature, signature, length);
- memcpy(header->oem_id, OEM_ID, 6);
- memcpy(header->oem_table_id, ACPI_TABLE_CREATOR, 8);
- memcpy(header->asl_compiler_id, ASLC, 4);
-}
-
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);
+ struct acpi_table_header *header = &(madt->header);
+ u32 current = (u32)madt + sizeof(struct acpi_madt);
memset((void *)madt, 0, sizeof(struct acpi_madt));
/* Fill out header fields */
- fill_header(header, "APIC", 4);
+ acpi_fill_header(header, "APIC");
header->length = sizeof(struct acpi_madt);
-
- /* ACPI 1.0/2.0: 1, ACPI 3.0: 2, ACPI 4.0: 3 */
- header->revision = ACPI_REV_ACPI_2_0;
+ header->revision = 4;
madt->lapic_addr = LAPIC_DEFAULT_BASE;
- madt->flags = PCAT_COMPAT;
+ madt->flags = ACPI_MADT_PCAT_COMPAT;
current = acpi_fill_madt(current);
/* (Re)calculate length and checksum */
- header->length = current - (unsigned long)madt;
+ header->length = current - (u32)madt;
header->checksum = table_compute_checksum((void *)madt, header->length);
}
static int acpi_create_mcfg_mmconfig(struct acpi_mcfg_mmconfig *mmconfig,
- u32 base, u16 seg_nr, u8 start, u8 end)
+ u32 base, u16 seg_nr, u8 start, u8 end)
{
memset(mmconfig, 0, sizeof(*mmconfig));
- mmconfig->base_address = base;
- mmconfig->base_reserved = 0;
+ mmconfig->base_address_l = base;
+ mmconfig->base_address_h = 0;
mmconfig->pci_segment_group_number = seg_nr;
mmconfig->start_bus_number = start;
mmconfig->end_bus_number = end;
@@ -196,11 +273,11 @@ static int acpi_create_mcfg_mmconfig(struct acpi_mcfg_mmconfig *mmconfig,
return sizeof(struct acpi_mcfg_mmconfig);
}
-static unsigned long acpi_fill_mcfg(unsigned long current)
+static u32 acpi_fill_mcfg(u32 current)
{
current += acpi_create_mcfg_mmconfig
((struct acpi_mcfg_mmconfig *)current,
- CONFIG_PCIE_ECAM_BASE, 0x0, 0x0, 255);
+ CONFIG_PCIE_ECAM_BASE, 0x0, 0x0, 255);
return current;
}
@@ -208,132 +285,45 @@ static unsigned long acpi_fill_mcfg(unsigned long current)
/* 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);
+ struct acpi_table_header *header = &(mcfg->header);
+ u32 current = (u32)mcfg + sizeof(struct acpi_mcfg);
memset((void *)mcfg, 0, sizeof(struct acpi_mcfg));
/* Fill out header fields */
- fill_header(header, "MCFG", 4);
+ acpi_fill_header(header, "MCFG");
header->length = sizeof(struct acpi_mcfg);
-
- /* ACPI 1.0/2.0: 1, ACPI 3.0: 2, ACPI 4.0: 3 */
- header->revision = ACPI_REV_ACPI_2_0;
+ header->revision = 1;
current = acpi_fill_mcfg(current);
/* (Re)calculate length and checksum */
- header->length = current - (unsigned long)mcfg;
+ header->length = current - (u32)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 */
- fill_header(header, "RSDT", 4);
- header->length = sizeof(struct acpi_rsdt);
-
- /* ACPI 1.0/2.0: 1, ACPI 3.0: 2, ACPI 4.0: 3 */
- header->revision = ACPI_REV_ACPI_2_0;
-
- /* 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)
+static void enter_acpi_mode(int pm1_cnt)
{
- acpi_header_t *header = &(xsdt->header);
-
- /* Fill out header fields */
- fill_header(header, "XSDT", 4);
- header->length = sizeof(struct acpi_xsdt);
-
- /* ACPI 1.0/2.0: 1, ACPI 3.0: 2, ACPI 4.0: 3 */
- header->revision = ACPI_REV_ACPI_2_0;
-
- /* 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 = ACPI_RSDP_REV_ACPI_1_0;
- } else {
- rsdp->xsdt_address = (u64)(u32)xsdt;
- rsdp->revision = ACPI_RSDP_REV_ACPI_2_0;
- }
-
- /* 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);
- /* Access size in ACPI 2.0c/3.0/4.0/5.0 */
- ssdt->revision = ACPI_REV_ACPI_3_0;
- memcpy(&ssdt->oem_id, OEM_ID, 6);
- memcpy(&ssdt->oem_table_id, oem_table_id, 8);
- ssdt->oem_revision = OEM_REVISION;
- memcpy(&ssdt->asl_compiler_id, ASLC, 4);
- ssdt->asl_compiler_revision = ASL_COMPILER_REVISION;
- 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);
+ * PM1_CNT register bit0 selects the power management event to be
+ * either an SCI or SMI interrupt. When this bit is set, then power
+ * management events will generate an SCI interrupt. When this bit
+ * is reset power management events will generate an SMI interrupt.
+ *
+ * Per ACPI spec, it is the responsibility of the hardware to set
+ * or reset this bit. OSPM always preserves this bit position.
+ *
+ * U-Boot does not support SMI. And we don't have plan to support
+ * anything running in SMM within U-Boot. To create a legacy-free
+ * system, and expose ourselves to OSPM as working under ACPI mode
+ * already, turn this bit on.
+ */
+ outw(PM1_CNT_SCI_EN, pm1_cnt);
}
/*
* QEMU's version of write_acpi_tables is defined in
- * arch/x86/cpu/qemu/fw_cfg.c
+ * arch/x86/cpu/qemu/acpi_table.c
*/
u32 write_acpi_tables(u32 start)
{
@@ -342,18 +332,17 @@ u32 write_acpi_tables(u32 start)
struct acpi_rsdt *rsdt;
struct acpi_xsdt *xsdt;
struct acpi_facs *facs;
- acpi_header_t *dsdt;
+ struct acpi_table_header *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 ACPI tables to 16 byte */
current = ALIGN(current, 16);
- debug("ACPI: Writing ACPI tables at %lx.\n", start);
+ debug("ACPI: Writing ACPI tables at %x\n", start);
/* We need at least an RSDP and an RSDT Table */
rsdp = (struct acpi_rsdp *)current;
@@ -364,7 +353,11 @@ u32 write_acpi_tables(u32 start)
current = ALIGN(current, 16);
xsdt = (struct acpi_xsdt *)current;
current += sizeof(struct acpi_xsdt);
- current = ALIGN(current, 16);
+ /*
+ * Per ACPI spec, the FACS table address must be aligned to a 64 byte
+ * boundary (Windows checks this, but Linux does not).
+ */
+ current = ALIGN(current, 64);
/* clear all table memory */
memset((void *)start, 0, current - start);
@@ -381,21 +374,13 @@ u32 write_acpi_tables(u32 start)
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);
- }
+ dsdt = (struct acpi_table_header *)current;
+ memcpy(dsdt, &AmlCode, sizeof(struct acpi_table_header));
+ current += sizeof(struct acpi_table_header);
+ memcpy((char *)current,
+ (char *)&AmlCode + sizeof(struct acpi_table_header),
+ dsdt->length - sizeof(struct acpi_table_header));
+ current += dsdt->length - sizeof(struct acpi_table_header);
current = ALIGN(current, 16);
debug("ACPI: * FADT\n");
@@ -405,36 +390,29 @@ u32 write_acpi_tables(u32 start)
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;
- current = ALIGN(current, 16);
- 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);
- }
+ current += madt->header.length;
+ acpi_add_table(rsdp, madt);
current = ALIGN(current, 16);
- 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);
- current = ALIGN(current, 16);
- }
+ debug("ACPI: * MCFG\n");
+ mcfg = (struct acpi_mcfg *)current;
+ acpi_create_mcfg(mcfg);
+ current += mcfg->header.length;
+ acpi_add_table(rsdp, mcfg);
+ current = ALIGN(current, 16);
+
+ debug("current = %x\n", current);
- debug("current = %lx\n", current);
+ debug("ACPI: done\n");
- debug("ACPI: done.\n");
+ /*
+ * Other than waiting for OSPM to request us to switch to ACPI mode,
+ * do it by ourselves, since SMI will not be triggered.
+ */
+ enter_acpi_mode(fadt->pm1a_cnt_blk);
return current;
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-24 06:42:03 +0000