[Xen-devel] [PATCH v3 12/17] libxl/arm: Construct ACPI FADT table

[Shannon Zhao <zhaoshenglong@xxxxxxxxxx>]

From: Shannon Zhao <shannon.zhao@xxxxxxxxxx>

Signed-off-by: Shannon Zhao <shannon.zhao@xxxxxxxxxx>
---
 tools/libxl/libxl_arm_acpi.c | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/tools/libxl/libxl_arm_acpi.c b/tools/libxl/libxl_arm_acpi.c
index 96ce605..6075391 100644
--- a/tools/libxl/libxl_arm_acpi.c
+++ b/tools/libxl/libxl_arm_acpi.c
@@ -279,6 +279,25 @@ static int make_acpi_madt(libxl__gc *gc, struct 
xc_dom_image *dom, int nr_cpus,
     return 0;
 }
 
+static void make_acpi_fadt(libxl__gc *gc, struct xc_dom_image *dom,
+                           struct acpitable acpitables[])
+{
+    uint64_t offset = acpitables[FADT].addr - GUEST_ACPI_BASE;
+    struct acpi_table_fadt *fadt = dom->acpitable_blob + offset;
+
+    /* Hardware Reduced = 1 and use PSCI 0.2+ and with HVC */
+    fadt->flags = ACPI_FADT_HW_REDUCED;
+    fadt->arm_boot_flags = (ACPI_FADT_PSCI_COMPLIANT) | ACPI_FADT_PSCI_USE_HVC;
+
+    /* ACPI v5.1 (fadt->revision.fadt->minor_revision) */
+    fadt->minor_revision = 0x1;
+    fadt->dsdt = acpitables[DSDT].addr;
+
+    make_acpi_header(&fadt->header, "FACP", acpitables[FADT].size, 5);
+    calculate_checksum(fadt, offsetof(struct acpi_table_header, checksum),
+                       acpitables[FADT].size);
+}
+
 int libxl__prepare_acpi(libxl__gc *gc, libxl_domain_build_info *info,
                         libxl__domain_build_state *state,
                         struct xc_dom_image *dom)
@@ -311,6 +330,8 @@ int libxl__prepare_acpi(libxl__gc *gc, 
libxl_domain_build_info *info,
     if (rc)
        return rc;
 
+    make_acpi_fadt(gc, dom, acpitables);
+
     return 0;
 }
 
-- 
2.0.4



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