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-rw-r--r--hw/arm/virt-acpi-build.c19
1 files changed, 19 insertions, 0 deletions
diff --git a/hw/arm/virt-acpi-build.c b/hw/arm/virt-acpi-build.c
index 9123649..c9d67cc 100644
--- a/hw/arm/virt-acpi-build.c
+++ b/hw/arm/virt-acpi-build.c
@@ -324,6 +324,23 @@ static void acpi_dsdt_add_pci(Aml *scope, const MemMapEntry *memmap,
aml_append(scope, dev);
}
+static void acpi_dsdt_add_gpio(Aml *scope, const MemMapEntry *gpio_memmap,
+ uint32_t gpio_irq)
+{
+ Aml *dev = aml_device("GPO0");
+ aml_append(dev, aml_name_decl("_HID", aml_string("ARMH0061")));
+ aml_append(dev, aml_name_decl("_ADR", aml_int(0)));
+ aml_append(dev, aml_name_decl("_UID", aml_int(0)));
+
+ Aml *crs = aml_resource_template();
+ aml_append(crs, aml_memory32_fixed(gpio_memmap->base, gpio_memmap->size,
+ AML_READ_WRITE));
+ aml_append(crs, aml_interrupt(AML_CONSUMER, AML_LEVEL, AML_ACTIVE_HIGH,
+ AML_EXCLUSIVE, &gpio_irq, 1));
+ aml_append(dev, aml_name_decl("_CRS", crs));
+ aml_append(scope, dev);
+}
+
/* RSDP */
static GArray *
build_rsdp(GArray *rsdp_table, GArray *linker, unsigned rsdt)
@@ -540,6 +557,8 @@ build_dsdt(GArray *table_data, GArray *linker, VirtGuestInfo *guest_info)
(irqmap[VIRT_MMIO] + ARM_SPI_BASE), NUM_VIRTIO_TRANSPORTS);
acpi_dsdt_add_pci(scope, memmap, (irqmap[VIRT_PCIE] + ARM_SPI_BASE),
guest_info->use_highmem);
+ acpi_dsdt_add_gpio(scope, &memmap[VIRT_GPIO],
+ (irqmap[VIRT_GPIO] + ARM_SPI_BASE));
aml_append(dsdt, scope);
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