[Xen-devel] [PATCH v4 07/16] libxl/arm: Construct ACPI GTDT table

[Shannon Zhao <zhaoshenglong@xxxxxxxxxx>]

From: Shannon Zhao <shannon.zhao@xxxxxxxxxx>

Construct GTDT table with the interrupt information of timers.

Signed-off-by: Shannon Zhao <shannon.zhao@xxxxxxxxxx>
---
 tools/libxl/libxl_arm_acpi.c | 29 +++++++++++++++++++++++++++++
 1 file changed, 29 insertions(+)

diff --git a/tools/libxl/libxl_arm_acpi.c b/tools/libxl/libxl_arm_acpi.c
index 8cd1d9b..28fb6fe 100644
--- a/tools/libxl/libxl_arm_acpi.c
+++ b/tools/libxl/libxl_arm_acpi.c
@@ -24,10 +24,18 @@ typedef uint8_t u8;
 typedef uint16_t u16;
 typedef uint32_t u32;
 typedef uint64_t u64;
+typedef int64_t s64;
 
 #include <acpi/acconfig.h>
 #include <acpi/actbl.h>
 
+#include <asm-generic/bitsperlong.h>
+#define ACPI_MACHINE_WIDTH __BITS_PER_LONG
+#define COMPILER_DEPENDENT_INT64 int64_t
+#define COMPILER_DEPENDENT_UINT64 uint64_t
+
+#include <acpi/actypes.h>
+
 _hidden
 extern const unsigned char dsdt_anycpu_arm[];
 _hidden
@@ -175,6 +183,26 @@ static void make_acpi_xsdt(libxl__gc *gc, struct 
xc_dom_image *dom,
                        acpitables[XSDT].size);
 }
 
+static void make_acpi_gtdt(libxl__gc *gc, struct xc_dom_image *dom,
+                           struct acpitable acpitables[])
+{
+    uint64_t offset = acpitables[GTDT].addr - GUEST_ACPI_BASE;
+    struct acpi_table_gtdt *gtdt = (void *)dom->acpi_modules[0].data + offset;
+
+    gtdt->non_secure_el1_interrupt = GUEST_TIMER_PHYS_NS_PPI;
+    gtdt->non_secure_el1_flags =
+                             (ACPI_LEVEL_SENSITIVE << ACPI_GTDT_INTERRUPT_MODE)
+                             |(ACPI_ACTIVE_LOW << 
ACPI_GTDT_INTERRUPT_POLARITY);
+    gtdt->virtual_timer_interrupt = GUEST_TIMER_VIRT_PPI;
+    gtdt->virtual_timer_flags =
+                             (ACPI_LEVEL_SENSITIVE << ACPI_GTDT_INTERRUPT_MODE)
+                             |(ACPI_ACTIVE_LOW << 
ACPI_GTDT_INTERRUPT_POLARITY);
+
+    make_acpi_header(&gtdt->header, "GTDT", acpitables[GTDT].size, 2);
+    calculate_checksum(gtdt, offsetof(struct acpi_table_header, checksum),
+                       acpitables[GTDT].size);
+}
+
 int libxl__prepare_acpi(libxl__gc *gc, libxl_domain_build_info *info,
                         libxl__domain_build_state *state,
                         struct xc_dom_image *dom)
@@ -205,6 +233,7 @@ int libxl__prepare_acpi(libxl__gc *gc, 
libxl_domain_build_info *info,
 
     make_acpi_rsdp(gc, dom, acpitables);
     make_acpi_xsdt(gc, dom, acpitables);
+    make_acpi_gtdt(gc, dom, acpitables);
 
 out:
     return rc;
-- 
2.0.4



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