@@ -57,6 +57,132 @@
#define ACPI_BUILD_DPRINTF(fmt, ...)
#endif
+static void acpi_dsdt_add_cpus(AcpiAml *scope, int max_cpus)
+{
+ AcpiAml dev, crs;
+ int i;
+ char name[5];
+ for (i = 0; i < max_cpus; i++) {
+ snprintf(name, 5, "CPU%u", i);
+ dev = acpi_device("%s", name);
+ aml_append(&dev, acpi_name_decl("_HID", acpi_string("ACPI007")));
+ aml_append(&dev, acpi_name_decl("_UID", acpi_int(i)));
+ crs = acpi_resource_template();
+ aml_append(&dev, acpi_name_decl("_CRS", crs));
+ aml_append(scope, dev);
+ }
+}
+
+static void acpi_dsdt_add_uart(AcpiAml *scope, const hwaddr *uart_addr,
+ const int *uart_irq)
+{
+ AcpiAml dev, crs;
+
+ dev = acpi_device("COM0");
+ aml_append(&dev, acpi_name_decl("_HID", acpi_string("ARMH0011")));
+ aml_append(&dev, acpi_name_decl("_UID", acpi_int(0)));
+
+ crs = acpi_resource_template();
+ aml_append(&crs,
+ acpi_memory32_fixed(uart_addr[0], uart_addr[1], 0x01));
+ aml_append(&crs,
+ acpi_interrupt(0x01, *uart_irq + 32));
+ aml_append(&dev, acpi_name_decl("_CRS", crs));
+ aml_append(scope, dev);
+}
+
+static void acpi_dsdt_add_rtc(AcpiAml *scope, const hwaddr *rtc_addr,
+ const int *rtc_irq)
+{
+ AcpiAml dev, crs;
+
+ dev = acpi_device("RTC0");
+ aml_append(&dev, acpi_name_decl("_HID", acpi_string("LNRO0013")));
+ aml_append(&dev, acpi_name_decl("_UID", acpi_int(0)));
+
+ crs = acpi_resource_template();
+ aml_append(&crs,
+ acpi_memory32_fixed(rtc_addr[0], rtc_addr[1], 0x01));
+ aml_append(&crs,
+ acpi_interrupt(0x01, *rtc_irq + 32));
+ aml_append(&dev, acpi_name_decl("_CRS", crs));
+ aml_append(scope, dev);
+}
+
+static void acpi_dsdt_add_flash(AcpiAml *scope, const hwaddr *flash_addr)
+{
+ AcpiAml dev, crs;
+ hwaddr base = flash_addr[0];
+ hwaddr size = flash_addr[1];
+
+ dev = acpi_device("FLS0");
+ aml_append(&dev, acpi_name_decl("_HID", acpi_string("LNRO0015")));
+ aml_append(&dev, acpi_name_decl("_UID", acpi_int(0)));
+
+ crs = acpi_resource_template();
+ aml_append(&crs,
+ acpi_memory32_fixed(base, size, 0x01));
+ aml_append(&dev, acpi_name_decl("_CRS", crs));
+ aml_append(scope, dev);
+
+ dev = acpi_device("FLS1");
+ aml_append(&dev, acpi_name_decl("_HID", acpi_string("LNRO0015")));
+ aml_append(&dev, acpi_name_decl("_UID", acpi_int(1)));
+ crs = acpi_resource_template();
+ aml_append(&crs,
+ acpi_memory32_fixed(base + size, size, 0x01));
+ aml_append(&dev, acpi_name_decl("_CRS", crs));
+ aml_append(scope, dev);
+}
+
+static void acpi_dsdt_add_virtio(AcpiAml *scope, const hwaddr *mmio_addrs,
+ const int *mmio_irq, int num)
+{
+ AcpiAml dev, crs;
+ hwaddr base = mmio_addrs[0];
+ hwaddr size = mmio_addrs[1];
+ int irq = *mmio_irq + 32;
+ int i;
+ char name[5];
+
+ for (i = 0; i < num; i++) {
+ snprintf(name, 5, "VR%02u", i);
+ dev = acpi_device("%s", name);
+ aml_append(&dev, acpi_name_decl("_HID", acpi_string("LNRO0005")));
+ aml_append(&dev, acpi_name_decl("_UID", acpi_int(i)));
+
+ crs = acpi_resource_template();
+ aml_append(&crs,
+ acpi_memory32_fixed(base, size, 0x01));
+ aml_append(&crs,
+ acpi_interrupt(0x01, irq + i));
+ aml_append(&dev, acpi_name_decl("_CRS", crs));
+ aml_append(scope, dev);
+ base += size;
+ }
+}
+
+/* DSDT */
+static void
+build_dsdt(AcpiAml *table_aml, GArray *linker, VirtGuestInfo *guest_info)
+{
+ AcpiAml scope, dsdt;
+ const struct acpi_dsdt_info *info = guest_info->dsdt_info;
+
+ dsdt = acpi_def_block("DSDT", 1, ACPI_BUILD_APPNAME6,
+ ACPI_BUILD_APPNAME4, 1, ACPI_BUILD_APPNAME4);
+ scope = acpi_scope("\\_SB");
+ acpi_dsdt_add_cpus(&scope, guest_info->max_cpus);
+ acpi_dsdt_add_uart(&scope, info->uart_addr, info->uart_irq);
+ acpi_dsdt_add_rtc(&scope, info->rtc_addr, info->rtc_irq);
+ acpi_dsdt_add_flash(&scope, info->flash_addr);
+ acpi_dsdt_add_virtio(&scope, info->virtio_mmio_addr,
+ info->virtio_mmio_irq, info->virtio_mmio_num);
+
+ aml_append(&dsdt, scope);
+ aml_append(table_aml, dsdt);
+}
+
typedef
struct AcpiBuildState {
/* Copy of table in RAM (for patching). */
@@ -75,6 +201,7 @@ static
void virt_acpi_build(VirtGuestInfo *guest_info, AcpiBuildTables *tables)
{
GArray *table_offsets;
+ unsigned dsdt;
table_offsets = g_array_new(false, true /* clear */,
sizeof(uint64_t));
@@ -92,6 +219,10 @@ void virt_acpi_build(VirtGuestInfo *guest_info, AcpiBuildTables *tables)
* DSDT
*/
+ /* DSDT is pointed to by FADT */
+ dsdt = tables->table_data.buf->len;
+ build_dsdt(&tables->table_data, tables->linker, guest_info);
+
/* Cleanup memory that's no longer used. */
g_array_free(table_offsets, true);
}
DSDT consists of the usual common table header plus a definition block in AML encoding which describes all devices in the platform. After initializing DSDT with header information the namespace is created which is followed by the device encodings. The devices are described using the Resource Template for the 32-Bit Fixed Memory Range and the Extended Interrupt Descriptors. Signed-off-by: Shannon Zhao <zhaoshenglong@huawei.com> --- hw/arm/virt-acpi-build.c | 131 ++++++++++++++++++++++++++++++++++++++++++++++ 1 files changed, 131 insertions(+), 0 deletions(-)