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efi: Deduplicate configuration table search function

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We do table search in many places doing exactly the same algorithm.
The only minor variance in users is which table is used if several entries
are present. As specification mandates uniqueness and even if it ever isn't,
first entry is good enough, unify this code and always use the first entry.

Signed-off-by: Vladimir Serbinenko <phcoder@gmail.com>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
This commit is contained in:
Vladimir Serbinenko committed 2023-11-06 22:47:16 +01:00
1 parent c6cf807fc0
commit 7ad30299da
7 files changed
+45 -103
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grub-core/kern/efi/acpi.c
+2 -24
View File
@@ -18,42 +18,20 @@
*/
#include <grub/acpi.h>
#include <grub/misc.h>
#include <grub/efi/efi.h>
#include <grub/efi/api.h>
struct grub_acpi_rsdp_v10 *
grub_machine_acpi_get_rsdpv1 (void)
{
unsigned i;
static grub_guid_t acpi_guid = GRUB_EFI_ACPI_TABLE_GUID;
for (i = 0; i < grub_efi_system_table->num_table_entries; i++)
{
grub_guid_t *guid =
&grub_efi_system_table->configuration_table[i].vendor_guid;
if (! grub_memcmp (guid, &acpi_guid, sizeof (grub_guid_t)))
return (struct grub_acpi_rsdp_v10 *)
grub_efi_system_table->configuration_table[i].vendor_table;
}
return 0;
return (struct grub_acpi_rsdp_v10 *) grub_efi_find_configuration_table (&acpi_guid);
}
struct grub_acpi_rsdp_v20 *
grub_machine_acpi_get_rsdpv2 (void)
{
unsigned i;
static grub_guid_t acpi20_guid = GRUB_EFI_ACPI_20_TABLE_GUID;
for (i = 0; i < grub_efi_system_table->num_table_entries; i++)
{
grub_guid_t *guid =
&grub_efi_system_table->configuration_table[i].vendor_guid;
if (! grub_memcmp (guid, &acpi20_guid, sizeof (grub_guid_t)))
return (struct grub_acpi_rsdp_v20 *)
grub_efi_system_table->configuration_table[i].vendor_table;
}
return 0;
return (struct grub_acpi_rsdp_v20 *) grub_efi_find_configuration_table (&acpi20_guid);
}