mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-16 17:58:23 +00:00
bfeb5d460c
The DMA Remapping Reporting (DMAR) table contains information about DMA remapping. Add a version simple version of this table with only the minimum fields filled out. i.e. no entries. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Wolfgang Wallner <wolfgang.wallner@br-automation.com>
93 lines
2.2 KiB
C
93 lines
2.2 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* Generic code used to generate ACPI tables
|
|
*
|
|
* Copyright 2019 Google LLC
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <acpi/acpi_table.h>
|
|
#include <dm.h>
|
|
#include <cpu.h>
|
|
|
|
/* Temporary change to ensure bisectability */
|
|
#ifndef CONFIG_SANDBOX
|
|
int acpi_create_dmar(struct acpi_dmar *dmar, enum dmar_flags flags)
|
|
{
|
|
struct acpi_table_header *header = &dmar->header;
|
|
struct cpu_info info;
|
|
struct udevice *cpu;
|
|
int ret;
|
|
|
|
ret = uclass_first_device(UCLASS_CPU, &cpu);
|
|
if (ret)
|
|
return log_msg_ret("cpu", ret);
|
|
ret = cpu_get_info(cpu, &info);
|
|
if (ret)
|
|
return log_msg_ret("info", ret);
|
|
memset((void *)dmar, 0, sizeof(struct acpi_dmar));
|
|
|
|
/* Fill out header fields. */
|
|
acpi_fill_header(&dmar->header, "DMAR");
|
|
header->length = sizeof(struct acpi_dmar);
|
|
header->revision = acpi_get_table_revision(ACPITAB_DMAR);
|
|
|
|
dmar->host_address_width = info.address_width - 1;
|
|
dmar->flags = flags;
|
|
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
int acpi_get_table_revision(enum acpi_tables table)
|
|
{
|
|
switch (table) {
|
|
case ACPITAB_FADT:
|
|
return ACPI_FADT_REV_ACPI_3_0;
|
|
case ACPITAB_MADT:
|
|
return ACPI_MADT_REV_ACPI_3_0;
|
|
case ACPITAB_MCFG:
|
|
return ACPI_MCFG_REV_ACPI_3_0;
|
|
case ACPITAB_TCPA:
|
|
/* This version and the rest are open-coded */
|
|
return 2;
|
|
case ACPITAB_TPM2:
|
|
return 4;
|
|
case ACPITAB_SSDT: /* ACPI 3.0 upto 6.3: 2 */
|
|
return 2;
|
|
case ACPITAB_SRAT: /* ACPI 2.0: 1, ACPI 3.0: 2, ACPI 4.0 to 6.3: 3 */
|
|
return 1; /* TODO Should probably be upgraded to 2 */
|
|
case ACPITAB_DMAR:
|
|
return 1;
|
|
case ACPITAB_SLIT: /* ACPI 2.0 upto 6.3: 1 */
|
|
return 1;
|
|
case ACPITAB_SPMI: /* IMPI 2.0 */
|
|
return 5;
|
|
case ACPITAB_HPET: /* Currently 1. Table added in ACPI 2.0 */
|
|
return 1;
|
|
case ACPITAB_VFCT: /* ACPI 2.0/3.0/4.0: 1 */
|
|
return 1;
|
|
case ACPITAB_IVRS:
|
|
return IVRS_FORMAT_FIXED;
|
|
case ACPITAB_DBG2:
|
|
return 0;
|
|
case ACPITAB_FACS: /* ACPI 2.0/3.0: 1, ACPI 4.0 to 6.3: 2 */
|
|
return 1;
|
|
case ACPITAB_RSDT: /* ACPI 1.0 upto 6.3: 1 */
|
|
return 1;
|
|
case ACPITAB_XSDT: /* ACPI 2.0 upto 6.3: 1 */
|
|
return 1;
|
|
case ACPITAB_RSDP: /* ACPI 2.0 upto 6.3: 2 */
|
|
return 2;
|
|
case ACPITAB_HEST:
|
|
return 1;
|
|
case ACPITAB_NHLT:
|
|
return 5;
|
|
case ACPITAB_BERT:
|
|
return 1;
|
|
case ACPITAB_SPCR:
|
|
return 2;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
}
|