The primary purpose of this patch is to catch some very minor white space edits while adding in two very simple compliance tests -- is the table checksum correct, and is the revision number current?
Signed-off-by: Al Stone al.stone@linaro.org --- src/acpi/fadt/fadt.c | 60 ++++++++++++++++++++++++++++++++++++++++++++++++---- 1 file changed, 56 insertions(+), 4 deletions(-)
diff --git a/src/acpi/fadt/fadt.c b/src/acpi/fadt/fadt.c index 7ca351d..afe52f3 100644 --- a/src/acpi/fadt/fadt.c +++ b/src/acpi/fadt/fadt.c @@ -20,8 +20,8 @@ */ #include "fwts.h"
-#include <stdlib.h> #include <stdio.h> +#include <stdlib.h> #include <sys/types.h> #include <sys/stat.h> #ifdef FWTS_ARCH_INTEL @@ -53,7 +53,7 @@ static int fadt_init(fwts_framework *fw) fwts_log_error(fw, "ACPI table FACP does not exist!"); return FWTS_ERROR; } - fadt = (const fwts_acpi_table_fadt*)table->data; + fadt = (const fwts_acpi_table_fadt *)table->data; fadt_size = table->length;
/* Not having a FADT is not a failure on x86 */ @@ -154,6 +154,56 @@ static int fadt_info(fwts_framework *fw) return FWTS_OK; }
+static int fadt_checksum(fwts_framework *fw) +{ + const uint8_t *data = (const uint8_t *)fadt; + ssize_t length = fadt->header.length; + uint8_t checksum = 0; + + /* verify the table checksum */ + checksum = fwts_checksum(data, length); + if (checksum == 0) + fwts_passed(fw, "FADT checksum is correct"); + else + fwts_failed(fw, LOG_LEVEL_MEDIUM, + "SPECMADTChecksum", + "FADT checksum is incorrect: 0x%x", checksum); + + return FWTS_OK; +} + +static int fadt_revision(fwts_framework *fw) +{ + const uint8_t LATEST_MAJOR = 6; + const uint8_t LATEST_MINOR = 1; + uint8_t major; + uint8_t minor; + + major = fadt->header.revision; + minor = 0; + if (major >= 5 && fadt->header.length >= 268) + minor = fadt->minor_version; /* field added ACPI 5.1 */ + + fwts_log_info(fw, "FADT revision: %d.%d", major, minor); + fwts_log_info(fw, "FADT table length: %d", fadt->header.length); + + if (major == LATEST_MAJOR && minor == LATEST_MINOR) + fwts_passed(fw, "FADT revision is up to date."); + else { + fwts_warning(fw, "FADT revision is outdated: %d.%d", + major, minor); + fwts_advice(fw, "The most recent revision of the FADT " + "defined in the ACPI specification is %d.%d. " + "While older revisions of the FADT can be used, " + "newer ones may enable additional functionality " + "that cannot be used until the FADT is updated.", + LATEST_MAJOR, LATEST_MINOR); + } + + return FWTS_OK; +} + + static void acpi_table_check_fadt_firmware_control( fwts_framework *fw, const fwts_acpi_table_fadt *fadt, @@ -637,8 +687,10 @@ static int fadt_test3(fwts_framework *fw) }
static fwts_framework_minor_test fadt_tests[] = { - { fadt_info, "FADT ACPI Description Table flag info." }, - { fadt_test1, "Test FADT ACPI Description Table tests." }, + { fadt_info, "ACPI FADT Description Table flag info." }, + { fadt_checksum, "FADT checksum test." }, + { fadt_revision, "FADT revision test." }, + { fadt_test1, "ACPI FADT Description Table tests." }, { fadt_test2, "Test FADT SCI_EN bit is enabled." }, { fadt_test3, "Test FADT reset register." }, { NULL, NULL }