diff options
Diffstat (limited to 'lib/acpi/acpi_table.c')
| -rw-r--r-- | lib/acpi/acpi_table.c | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/lib/acpi/acpi_table.c b/lib/acpi/acpi_table.c index 7ea4b2e87e..d1685404c2 100644 --- a/lib/acpi/acpi_table.c +++ b/lib/acpi/acpi_table.c @@ -17,6 +17,22 @@ #include <asm/global_data.h> #include <dm/acpi.h> +/* + * OEM_REVISION is 32-bit unsigned number. It should be increased only when + * changing software version. Therefore it should not depend on build time. + * U-Boot calculates it from U-Boot version and represent it in hexadecimal + * notation. As U-Boot version is in form year.month set low 8 bits to 0x01 + * to have valid date. So for U-Boot version 2021.04 OEM_REVISION is set to + * value 0x20210401. + */ +#define OEM_REVISION ((((U_BOOT_VERSION_NUM / 1000) % 10) << 28) | \ + (((U_BOOT_VERSION_NUM / 100) % 10) << 24) | \ + (((U_BOOT_VERSION_NUM / 10) % 10) << 20) | \ + ((U_BOOT_VERSION_NUM % 10) << 16) | \ + (((U_BOOT_VERSION_NUM_PATCH / 10) % 10) << 12) | \ + ((U_BOOT_VERSION_NUM_PATCH % 10) << 8) | \ + 0x01) + int acpi_create_dmar(struct acpi_dmar *dmar, enum dmar_flags flags) { struct acpi_table_header *header = &dmar->header; @@ -101,7 +117,7 @@ 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; + header->oem_revision = OEM_REVISION; memcpy(header->aslc_id, ASLC_ID, 4); } |