mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-09-10 23:03:29 +09:00
![Bin Meng](/assets/img/avatar_default.png)
write_acpi_tables() currently touches ACPI hardware to switch to ACPI mode at the end. Move such operation out of this function, so that it only does what the function name tells us. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org> Tested-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
453 lines
12 KiB
C
453 lines
12 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* Based on acpi.c from coreboot
|
|
*
|
|
* Copyright (C) 2015, Saket Sinha <saket.sinha89@gmail.com>
|
|
* Copyright (C) 2016, Bin Meng <bmeng.cn@gmail.com>
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <cpu.h>
|
|
#include <dm.h>
|
|
#include <dm/uclass-internal.h>
|
|
#include <version.h>
|
|
#include <asm/acpi/global_nvs.h>
|
|
#include <asm/acpi_table.h>
|
|
#include <asm/ioapic.h>
|
|
#include <asm/lapic.h>
|
|
#include <asm/mpspec.h>
|
|
#include <asm/tables.h>
|
|
#include <asm/arch/global_nvs.h>
|
|
|
|
/*
|
|
* IASL compiles the dsdt entries and writes the hex values
|
|
* to a C array AmlCode[] (see dsdt.c).
|
|
*/
|
|
extern const unsigned char AmlCode[];
|
|
|
|
/* ACPI RSDP address to be used in boot parameters */
|
|
static ulong acpi_rsdp_addr;
|
|
|
|
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);
|
|
header->oem_revision = U_BOOT_BUILD_DATE;
|
|
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.
|
|
*/
|
|
static 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 while the XSDT is not */
|
|
rsdt = (struct acpi_rsdt *)rsdp->rsdt_address;
|
|
|
|
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: 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(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);
|
|
|
|
/*
|
|
* 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 U-Boot
|
|
*/
|
|
if (xsdt) {
|
|
/* Add table to the XSDT */
|
|
xsdt->entry[i] = (u64)(u32)table;
|
|
|
|
/* Fix XSDT length */
|
|
xsdt->header.length = sizeof(struct acpi_table_header) +
|
|
(sizeof(u64) * (i + 1));
|
|
|
|
/* Re-calculate checksum */
|
|
xsdt->header.checksum = 0;
|
|
xsdt->header.checksum = table_compute_checksum((u8 *)xsdt,
|
|
xsdt->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;
|
|
}
|
|
|
|
static int acpi_create_madt_lapic(struct acpi_madt_lapic *lapic,
|
|
u8 cpu, u8 apic)
|
|
{
|
|
lapic->type = ACPI_APIC_LAPIC;
|
|
lapic->length = sizeof(struct acpi_madt_lapic);
|
|
lapic->flags = LOCAL_APIC_FLAG_ENABLED;
|
|
lapic->processor_id = cpu;
|
|
lapic->apic_id = apic;
|
|
|
|
return lapic->length;
|
|
}
|
|
|
|
int acpi_create_madt_lapics(u32 current)
|
|
{
|
|
struct udevice *dev;
|
|
int total_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);
|
|
int length = acpi_create_madt_lapic(
|
|
(struct acpi_madt_lapic *)current,
|
|
plat->cpu_id, plat->cpu_id);
|
|
current += length;
|
|
total_length += length;
|
|
}
|
|
|
|
return total_length;
|
|
}
|
|
|
|
int acpi_create_madt_ioapic(struct acpi_madt_ioapic *ioapic, u8 id,
|
|
u32 addr, u32 gsi_base)
|
|
{
|
|
ioapic->type = ACPI_APIC_IOAPIC;
|
|
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 = ACPI_APIC_IRQ_SRC_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 = ACPI_APIC_LAPIC_NMI;
|
|
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 int acpi_create_madt_irq_overrides(u32 current)
|
|
{
|
|
struct acpi_madt_irqoverride *irqovr;
|
|
u16 sci_flags = MP_IRQ_TRIGGER_LEVEL | MP_IRQ_POLARITY_HIGH;
|
|
int length = 0;
|
|
|
|
irqovr = (void *)current;
|
|
length += acpi_create_madt_irqoverride(irqovr, 0, 0, 2, 0);
|
|
|
|
irqovr = (void *)(current + length);
|
|
length += acpi_create_madt_irqoverride(irqovr, 0, 9, 9, sci_flags);
|
|
|
|
return length;
|
|
}
|
|
|
|
__weak u32 acpi_fill_madt(u32 current)
|
|
{
|
|
current += acpi_create_madt_lapics(current);
|
|
|
|
current += acpi_create_madt_ioapic((struct acpi_madt_ioapic *)current,
|
|
io_apic_read(IO_APIC_ID) >> 24, IO_APIC_ADDR, 0);
|
|
|
|
current += acpi_create_madt_irq_overrides(current);
|
|
|
|
return current;
|
|
}
|
|
|
|
static void acpi_create_madt(struct acpi_madt *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 */
|
|
acpi_fill_header(header, "APIC");
|
|
header->length = sizeof(struct acpi_madt);
|
|
header->revision = 4;
|
|
|
|
madt->lapic_addr = LAPIC_DEFAULT_BASE;
|
|
madt->flags = ACPI_MADT_PCAT_COMPAT;
|
|
|
|
current = acpi_fill_madt(current);
|
|
|
|
/* (Re)calculate length and checksum */
|
|
header->length = current - (u32)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_l = base;
|
|
mmconfig->base_address_h = 0;
|
|
mmconfig->pci_segment_group_number = seg_nr;
|
|
mmconfig->start_bus_number = start;
|
|
mmconfig->end_bus_number = end;
|
|
|
|
return sizeof(struct acpi_mcfg_mmconfig);
|
|
}
|
|
|
|
__weak u32 acpi_fill_mcfg(u32 current)
|
|
{
|
|
current += acpi_create_mcfg_mmconfig
|
|
((struct acpi_mcfg_mmconfig *)current,
|
|
CONFIG_PCIE_ECAM_BASE, 0x0, 0x0, 255);
|
|
|
|
return current;
|
|
}
|
|
|
|
/* MCFG is defined in the PCI Firmware Specification 3.0 */
|
|
static void acpi_create_mcfg(struct acpi_mcfg *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 */
|
|
acpi_fill_header(header, "MCFG");
|
|
header->length = sizeof(struct acpi_mcfg);
|
|
header->revision = 1;
|
|
|
|
current = acpi_fill_mcfg(current);
|
|
|
|
/* (Re)calculate length and checksum */
|
|
header->length = current - (u32)mcfg;
|
|
header->checksum = table_compute_checksum((void *)mcfg, header->length);
|
|
}
|
|
|
|
/*
|
|
* QEMU's version of write_acpi_tables is defined in drivers/misc/qfw.c
|
|
*/
|
|
ulong write_acpi_tables(ulong start)
|
|
{
|
|
u32 current;
|
|
struct acpi_rsdp *rsdp;
|
|
struct acpi_rsdt *rsdt;
|
|
struct acpi_xsdt *xsdt;
|
|
struct acpi_facs *facs;
|
|
struct acpi_table_header *dsdt;
|
|
struct acpi_fadt *fadt;
|
|
struct acpi_mcfg *mcfg;
|
|
struct acpi_madt *madt;
|
|
int i;
|
|
|
|
current = start;
|
|
|
|
/* Align ACPI tables to 16 byte */
|
|
current = ALIGN(current, 16);
|
|
|
|
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);
|
|
current = ALIGN(current, 16);
|
|
rsdt = (struct acpi_rsdt *)current;
|
|
current += sizeof(struct acpi_rsdt);
|
|
current = ALIGN(current, 16);
|
|
xsdt = (struct acpi_xsdt *)current;
|
|
current += sizeof(struct acpi_xsdt);
|
|
/*
|
|
* 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);
|
|
|
|
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);
|
|
current = ALIGN(current, 16);
|
|
|
|
acpi_create_facs(facs);
|
|
|
|
debug("ACPI: * DSDT\n");
|
|
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);
|
|
|
|
/* Pack GNVS into the ACPI table area */
|
|
for (i = 0; i < dsdt->length; i++) {
|
|
u32 *gnvs = (u32 *)((u32)dsdt + i);
|
|
if (*gnvs == ACPI_GNVS_ADDR) {
|
|
debug("Fix up global NVS in DSDT to 0x%08x\n", current);
|
|
*gnvs = current;
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* Update DSDT checksum since we patched the GNVS address */
|
|
dsdt->checksum = 0;
|
|
dsdt->checksum = table_compute_checksum((void *)dsdt, dsdt->length);
|
|
|
|
/* Fill in platform-specific global NVS variables */
|
|
acpi_create_gnvs((struct acpi_global_nvs *)current);
|
|
current += sizeof(struct acpi_global_nvs);
|
|
current = ALIGN(current, 16);
|
|
|
|
debug("ACPI: * FADT\n");
|
|
fadt = (struct acpi_fadt *)current;
|
|
current += sizeof(struct acpi_fadt);
|
|
current = ALIGN(current, 16);
|
|
acpi_create_fadt(fadt, facs, dsdt);
|
|
acpi_add_table(rsdp, fadt);
|
|
|
|
debug("ACPI: * MADT\n");
|
|
madt = (struct acpi_madt *)current;
|
|
acpi_create_madt(madt);
|
|
current += madt->header.length;
|
|
acpi_add_table(rsdp, madt);
|
|
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);
|
|
|
|
acpi_rsdp_addr = (unsigned long)rsdp;
|
|
debug("ACPI: done\n");
|
|
|
|
return current;
|
|
}
|
|
|
|
ulong acpi_get_rsdp_addr(void)
|
|
{
|
|
return acpi_rsdp_addr;
|
|
}
|