@@ -41,6 +41,8 @@ static inline int ioperm(int a, ...)
static const fwts_acpi_table_fadt *fadt;
static int fadt_size;
+static const fwts_acpi_table_facs *facs;
+
static int fadt_init(fwts_framework *fw)
{
fwts_acpi_table_info *table;
@@ -69,6 +71,23 @@ static int fadt_init(fwts_framework *fw)
}
}
+ /*
+ * Some tests require data from the FACS, also, which is
+ * required (5.2.10) is we are not in reduced hardware
+ * mode
+ */
+ if (!fwts_acpi_is_reduced_hardware(fadt)) {
+ if (fwts_acpi_find_table(fw, "FACS", 0, &table) != FWTS_OK) {
+ fwts_log_error(fw, "Cannot read ACPI table FACS.");
+ return FWTS_ERROR;
+ }
+ if (table == NULL) {
+ fwts_log_error(fw, "ACPI table FACS does not exist!");
+ return FWTS_ERROR;
+ }
+ facs = (const fwts_acpi_table_facs *)table->data;
+ }
+
return FWTS_OK;
}
@@ -769,6 +788,102 @@ static void acpi_table_check_fadt_acpi_disable(fwts_framework *fw)
return;
}
+static void acpi_table_check_fadt_s4bios_req(fwts_framework *fw)
+{
+ if (facs && facs->length >= 24)
+ fwts_passed(fw,
+ "FADT indicates we are not in reduced hardware "
+ "mode, and required FACS is present.");
+ else
+ fwts_failed(fw, LOG_LEVEL_MEDIUM,
+ "FACSMustBePresent",
+ "FADT indicates we are not in reduced hardware "
+ "mode, which requires an FACS be present, but "
+ "none has been found.");
+
+ if (facs && (facs->flags & FWTS_FACS_FLAG_S4BIOS_F)) {
+ if (fadt->s4bios_req == 0) {
+ if (fadt->smi_cmd == 0) {
+ fwts_passed(fw,
+ "FADT indicates System Management "
+ "Mode is not supported, which "
+ "allows a zero S4BIOS_REQ value.");
+ fwts_advice(fw,
+ "There is an inconsistency between "
+ "the FADT and FACS. The FADT "
+ "indicates no SMM support, and "
+ "no S4BIOS_REQ command, but the "
+ "FACS indicates S4BIOS_REQ is "
+ "supported. One of these may "
+ "be incorrect.");
+ } else {
+ fwts_failed(fw, LOG_LEVEL_MEDIUM,
+ "SMMHasNoS4BIOSReqCmd",
+ "FADT SMI S4BIOS_REQ command is "
+ "zero, but this is not allowed "
+ "when SMM is supported, and the "
+ "S4BIOS_F flag is set in the "
+ "FACS.");
+ }
+ } else {
+ if (fadt->smi_cmd == 0) {
+ fwts_passed(fw,
+ "FADT indicates System Management "
+ "Mode is not supported, but a "
+ "S4BIOS_REQ command is defined.");
+ fwts_advice(fw,
+ "There is an inconsistency between "
+ "the FADT and FACS. The FADT "
+ "indicates no SMM support, but it "
+ "defines an S4BIOS_REQ command, "
+ "and the FACS indicates "
+ "S4BIOS_REQ is supported. One "
+ "of these may be incorrect.");
+ } else {
+ fwts_passed(fw,
+ "FADT S4BIOS_REQ command is "
+ "non-zero, SMM is supported so "
+ "the command can be used, and "
+ "the FACS indicates S4BIOS_REQ "
+ "is supported.");
+ }
+ }
+ } else {
+ if (fadt->s4bios_req == 0)
+ fwts_passed(fw, "FADT S4BIOS_REQ command is not set "
+ "and FACS indicates it is not supported.");
+ else
+ fwts_failed(fw, LOG_LEVEL_MEDIUM,
+ "SMMS4BIOSCmdDefined",
+ "FADT S4BIOS_REQ command is defined "
+ "but FACS indicates it is not supported.");
+ }
+
+ return;
+}
+
+static void acpi_table_check_fadt_pstate_cnt(fwts_framework *fw)
+{
+ if (fadt->pstate_cnt == 0) {
+ if (fadt->smi_cmd == 0)
+ fwts_passed(fw,
+ "FADT SMI PSTATE_CNT command is zero, "
+ "which is allowed since SMM is not "
+ "supported.");
+ } else {
+ if (fadt->smi_cmd == 0)
+ fwts_failed(fw, LOG_LEVEL_MEDIUM,
+ "SMMHasExtraPstateCntCmd",
+ "FADT SMI PSTATE_CNT command is "
+ "non-zero, but SMM is not supported.");
+ else
+ fwts_passed(fw, "FADT SMI PSTATE_CNT command is "
+ "non-zero, and SMM is supported.");
+ }
+
+ return;
+}
+
static void acpi_table_check_fadt_pm_tmr(
fwts_framework *fw,
const fwts_acpi_table_fadt *fadt,
@@ -914,6 +1029,8 @@ static int fadt_test1(fwts_framework *fw)
acpi_table_check_fadt_smi_cmd(fw);
acpi_table_check_fadt_acpi_enable(fw);
acpi_table_check_fadt_acpi_disable(fw);
+ acpi_table_check_fadt_s4bios_req(fw);
+ acpi_table_check_fadt_pstate_cnt(fw);
acpi_table_check_fadt_pm_tmr(fw, fadt, &passed);
acpi_table_check_fadt_gpe(fw, fadt, &passed);
acpi_table_check_fadt_pm_addr(fw, fadt, &passed);
These are the last two field that are related to the SMI_CMD field and whether or not it is defined. Additionally, this is the first set of tests that require information from the FACS, also, so add in that table to the initialization step. Signed-off-by: Al Stone <al.stone@linaro.org> --- src/acpi/fadt/fadt.c | 117 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 117 insertions(+) -- 2.5.0