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acpi: Add a method to write tables for a device

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A device may want to write out ACPI tables to describe itself to Linux.
Add a method to permit this.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Wolfgang Wallner <wolfgang.wallner@br-automation.com>
This commit is contained in:
Simon Glass
2020-04-26 09:19:46 -06:00
committed by Bin Meng
parent fa04cef644
commit 93f7f82782
7 changed files with 187 additions and 15 deletions
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13
lib/acpi/acpi_table.c
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@@ -9,9 +9,8 @@
#include <acpi/acpi_table.h>
#include <dm.h>
#include <cpu.h>
#include <version.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;
@@ -37,7 +36,6 @@ int acpi_create_dmar(struct acpi_dmar *dmar, enum dmar_flags flags)
return 0;
}
#endif
int acpi_get_table_revision(enum acpi_tables table)
{
@@ -91,3 +89,12 @@ int acpi_get_table_revision(enum acpi_tables table)
return -EINVAL;
}
}
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);
}