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acpi: new function acpi_update_checksum()

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Introduce a new function to update ACPI table headers.
This allows to simplify the existing code.

Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Reviewed-by: Matthias Brugger <mbrugger@suse.com>
Reviewed-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
This commit is contained in:
Heinrich Schuchardt 2025-03-22 00:21:16 +01:00 • committed by Tom Rini
parent c026767894
commit 69e61d46d2
2 changed files with 14 additions and 0 deletions
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7
include/acpi/acpi_table.h
View file

@ -1274,6 +1274,13 @@ ulong write_acpi_tables(ulong start);
*/ */
struct acpi_table_header *acpi_find_table(const char *sig); struct acpi_table_header *acpi_find_table(const char *sig);
/**
* acpi_update_checksum() - update ACPI table checksum
*
* @header - header of an ACPI table
*/
void acpi_update_checksum(struct acpi_table_header *header);
#endif /* !__ACPI__*/ #endif /* !__ACPI__*/
#include <asm/acpi_table.h> #include <asm/acpi_table.h>

7
lib/acpi/acpi.c
View file

@ -6,11 +6,18 @@
*/ */
#include <mapmem.h> #include <mapmem.h>
#include <tables_csum.h>
#include <acpi/acpi_table.h> #include <acpi/acpi_table.h>
#include <asm/global_data.h> #include <asm/global_data.h>
DECLARE_GLOBAL_DATA_PTR; DECLARE_GLOBAL_DATA_PTR;
void acpi_update_checksum(struct acpi_table_header *header)
{
header->checksum = 0;
header->checksum = table_compute_checksum(header, header->length);
}
struct acpi_table_header *acpi_find_table(const char *sig) struct acpi_table_header *acpi_find_table(const char *sig)
{ {
struct acpi_rsdp *rsdp; struct acpi_rsdp *rsdp;