mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-10 15:14:43 +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>
55 lines
1.4 KiB
C
55 lines
1.4 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* Write the ACPI Differentiated System Description Table (DSDT)
|
|
*
|
|
* Copyright 2021 Google LLC
|
|
*/
|
|
|
|
#define LOG_CATEGORY LOGC_ACPI
|
|
|
|
#include <common.h>
|
|
#include <acpi/acpi_table.h>
|
|
#include <dm/acpi.h>
|
|
#include <tables_csum.h>
|
|
|
|
/*
|
|
* IASL compiles the dsdt entries and writes the hex values
|
|
* to a C array AmlCode[] (see dsdt.c).
|
|
*/
|
|
extern const unsigned char AmlCode[];
|
|
|
|
int acpi_write_dsdt(struct acpi_ctx *ctx, const struct acpi_writer *entry)
|
|
{
|
|
const int thl = sizeof(struct acpi_table_header);
|
|
struct acpi_table_header *dsdt = ctx->current;
|
|
int aml_len;
|
|
|
|
/* Put the table header first */
|
|
memcpy(dsdt, &AmlCode, thl);
|
|
acpi_inc(ctx, thl);
|
|
log_debug("DSDT starts at %p, hdr ends at %p\n", dsdt, ctx->current);
|
|
|
|
/* If the table is not empty, allow devices to inject things */
|
|
aml_len = dsdt->length - thl;
|
|
if (aml_len) {
|
|
void *base = ctx->current;
|
|
int ret;
|
|
|
|
ret = acpi_inject_dsdt(ctx);
|
|
if (ret)
|
|
return log_msg_ret("inject", ret);
|
|
log_debug("Added %lx bytes from inject_dsdt, now at %p\n",
|
|
(ulong)(ctx->current - base), ctx->current);
|
|
log_debug("Copy AML code size %x to %p\n", aml_len,
|
|
ctx->current);
|
|
memcpy(ctx->current, AmlCode + thl, aml_len);
|
|
acpi_inc(ctx, aml_len);
|
|
}
|
|
|
|
ctx->dsdt = dsdt;
|
|
dsdt->length = ctx->current - (void *)dsdt;
|
|
log_debug("Updated DSDT length to %x\n", dsdt->length);
|
|
|
|
return 0;
|
|
}
|
|
ACPI_WRITER(3dsdt, "DSDT", acpi_write_dsdt, 0);
|