u-boot/lib/acpi/csrt.c
Simon Glass 78031ad431 x86: acpi: Update acpi_fill_csrt() to use acpi_ctx
Update this function to the newer style, so we can avoid passing and
returning an address through this function.

Also move this function out of the x86 code so it can be used by other
archs.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
2022-01-25 11:44:36 -07:00

50 lines
1.0 KiB
C

// SPDX-License-Identifier: GPL-2.0+
/*
* Write an ACPI Core System Resource Table (CSRT)
*
* Copyright 2021 Google LLC
*/
#define LOG_CATEGORY LOGC_ACPI
#include <common.h>
#include <mapmem.h>
#include <tables_csum.h>
#include <acpi/acpi_table.h>
#include <dm/acpi.h>
__weak int acpi_fill_csrt(struct acpi_ctx *ctx)
{
return 0;
}
int acpi_write_csrt(struct acpi_ctx *ctx, const struct acpi_writer *entry)
{
struct acpi_table_header *header;
struct acpi_csrt *csrt;
int ret;
csrt = ctx->current;
header = &csrt->header;
memset(csrt, '\0', sizeof(struct acpi_csrt));
/* Fill out header fields */
acpi_fill_header(header, "CSRT");
header->revision = 0;
acpi_inc(ctx, sizeof(*header));
ret = acpi_fill_csrt(ctx);
if (ret)
return log_msg_ret("fill", ret);
/* (Re)calculate length and checksum */
header->length = (ulong)ctx->current - (ulong)csrt;
header->checksum = table_compute_checksum(csrt, header->length);
acpi_add_table(ctx, csrt);
return 0;
}
ACPI_WRITER(5csrt, "CSRT", acpi_write_csrt, 0);