mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-01 00:49:43 +00:00
eacb6d0ba2
Move this table over to use a writer function, moving the code from the x86 implementation. Add a pointer to the DSDT in struct acpi_ctx so we can reference it later. Disable this table for sandbox since we don't actually compile real ASL code. Signed-off-by: Simon Glass <sjg@chromium.org>
94 lines
2.4 KiB
C
94 lines
2.4 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* Write base ACPI tables
|
|
*
|
|
* Copyright 2021 Google LLC
|
|
*/
|
|
|
|
#define LOG_CATEGORY LOGC_ACPI
|
|
|
|
#include <common.h>
|
|
#include <acpi/acpi_table.h>
|
|
#include <dm/acpi.h>
|
|
#include <mapmem.h>
|
|
#include <tables_csum.h>
|
|
|
|
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 = map_to_sysmem(rsdt);
|
|
|
|
rsdp->xsdt_address = map_to_sysmem(xsdt);
|
|
rsdp->revision = ACPI_RSDP_REV_ACPI_2_0;
|
|
|
|
/* Calculate checksums */
|
|
rsdp->checksum = table_compute_checksum(rsdp, 20);
|
|
rsdp->ext_checksum = table_compute_checksum(rsdp,
|
|
sizeof(struct acpi_rsdp));
|
|
}
|
|
|
|
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(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(xsdt,
|
|
sizeof(struct acpi_xsdt));
|
|
}
|
|
|
|
static int acpi_write_base(struct acpi_ctx *ctx,
|
|
const struct acpi_writer *entry)
|
|
{
|
|
/* We need at least an RSDP and an RSDT Table */
|
|
ctx->rsdp = ctx->current;
|
|
acpi_inc_align(ctx, sizeof(struct acpi_rsdp));
|
|
ctx->rsdt = ctx->current;
|
|
acpi_inc_align(ctx, sizeof(struct acpi_rsdt));
|
|
ctx->xsdt = ctx->current;
|
|
acpi_inc_align(ctx, sizeof(struct acpi_xsdt));
|
|
|
|
/* clear all table memory */
|
|
memset(ctx->base, '\0', ctx->current - ctx->base);
|
|
|
|
acpi_write_rsdp(ctx->rsdp, ctx->rsdt, ctx->xsdt);
|
|
acpi_write_rsdt(ctx->rsdt);
|
|
acpi_write_xsdt(ctx->xsdt);
|
|
|
|
return 0;
|
|
}
|
|
/*
|
|
* Per ACPI spec, the FACS table address must be aligned to a 64-byte boundary
|
|
* (Windows checks this, but Linux does not).
|
|
*
|
|
* Use the '0' prefix to put this one first
|
|
*/
|
|
ACPI_WRITER(0base, NULL, acpi_write_base, ACPIWF_ALIGN64);
|