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[Qemu-devel] [PATCH v6 06/22] hw/arm/virt-acpi-build: Generation of DSDT
From: |
Shannon Zhao |
Subject: |
[Qemu-devel] [PATCH v6 06/22] hw/arm/virt-acpi-build: Generation of DSDT table for virt devices |
Date: |
Thu, 7 May 2015 17:29:08 +0800 |
From: Shannon Zhao <address@hidden>
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 <address@hidden>
Signed-off-by: Shannon Zhao <address@hidden>
---
hw/arm/virt-acpi-build.c | 128 +++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 128 insertions(+)
diff --git a/hw/arm/virt-acpi-build.c b/hw/arm/virt-acpi-build.c
index 960206d..1a00ad7 100644
--- a/hw/arm/virt-acpi-build.c
+++ b/hw/arm/virt-acpi-build.c
@@ -42,6 +42,130 @@
#include "hw/hw.h"
#include "hw/acpi/aml-build.h"
+static void acpi_dsdt_add_cpus(Aml *scope, int smp_cpus)
+{
+ uint16_t i;
+
+ for (i = 0; i < smp_cpus; i++) {
+ Aml *dev = aml_device("C%03x", i);
+ aml_append(dev, aml_name_decl("_HID", aml_string("ACPI0007")));
+ aml_append(dev, aml_name_decl("_UID", aml_int(i)));
+ Aml *crs = aml_resource_template();
+ aml_append(dev, aml_name_decl("_CRS", crs));
+ aml_append(scope, dev);
+ }
+}
+
+static void acpi_dsdt_add_uart(Aml *scope, const MemMap *uart_memmap,
+ const int *uart_irq)
+{
+ Aml *dev = aml_device("COM0");
+ aml_append(dev, aml_name_decl("_HID", aml_string("ARMH0011")));
+ aml_append(dev, aml_name_decl("_UID", aml_int(0)));
+
+ Aml *crs = aml_resource_template();
+ aml_append(crs, aml_memory32_fixed(uart_memmap->addr,
+ uart_memmap->size, aml_ReadWrite));
+ aml_append(crs,
+ aml_interrupt(aml_consumer, aml_level, aml_active_high,
+ aml_exclusive, aml_not_wake_capable, *uart_irq + 32));
+ aml_append(dev, aml_name_decl("_CRS", crs));
+ aml_append(scope, dev);
+}
+
+static void acpi_dsdt_add_rtc(Aml *scope, const MemMap *rtc_memmap,
+ const int *rtc_irq)
+{
+ Aml *dev = aml_device("RTC0");
+ aml_append(dev, aml_name_decl("_HID", aml_string("LNRO0013")));
+ aml_append(dev, aml_name_decl("_UID", aml_int(0)));
+
+ Aml *crs = aml_resource_template();
+ aml_append(crs, aml_memory32_fixed(rtc_memmap->addr,
+ rtc_memmap->size, aml_ReadWrite));
+ aml_append(crs,
+ aml_interrupt(aml_consumer, aml_level, aml_active_high,
+ aml_exclusive, aml_not_wake_capable, *rtc_irq + 32));
+ aml_append(dev, aml_name_decl("_CRS", crs));
+ aml_append(scope, dev);
+}
+
+static void acpi_dsdt_add_flash(Aml *scope, const MemMap *flash_memmap)
+{
+ Aml *dev, *crs;
+ hwaddr base = flash_memmap->addr;
+ hwaddr size = flash_memmap->size;
+
+ dev = aml_device("FLS0");
+ aml_append(dev, aml_name_decl("_HID", aml_string("LNRO0015")));
+ aml_append(dev, aml_name_decl("_UID", aml_int(0)));
+
+ crs = aml_resource_template();
+ aml_append(crs, aml_memory32_fixed(base, size, aml_ReadWrite));
+ aml_append(dev, aml_name_decl("_CRS", crs));
+ aml_append(scope, dev);
+
+ dev = aml_device("FLS1");
+ aml_append(dev, aml_name_decl("_HID", aml_string("LNRO0015")));
+ aml_append(dev, aml_name_decl("_UID", aml_int(1)));
+ crs = aml_resource_template();
+ aml_append(crs, aml_memory32_fixed(base + size, size, aml_ReadWrite));
+ aml_append(dev, aml_name_decl("_CRS", crs));
+ aml_append(scope, dev);
+}
+
+static void acpi_dsdt_add_virtio(Aml *scope, const MemMap *virtio_mmio_memmap,
+ const int *mmio_irq, int num)
+{
+ hwaddr base = virtio_mmio_memmap->addr;
+ hwaddr size = virtio_mmio_memmap->size;
+ int irq = *mmio_irq + 32;
+ int i;
+
+ for (i = 0; i < num; i++) {
+ Aml *dev = aml_device("VR%02u", i);
+ aml_append(dev, aml_name_decl("_HID", aml_string("LNRO0005")));
+ aml_append(dev, aml_name_decl("_UID", aml_int(i)));
+
+ Aml *crs = aml_resource_template();
+ aml_append(crs, aml_memory32_fixed(base, size, aml_ReadWrite));
+ aml_append(crs,
+ aml_interrupt(aml_consumer, aml_level, aml_active_high,
+ aml_exclusive, aml_not_wake_capable, irq + i));
+ aml_append(dev, aml_name_decl("_CRS", crs));
+ aml_append(scope, dev);
+ base += size;
+ }
+}
+
+/* DSDT */
+static void
+build_dsdt(GArray *table_data, GArray *linker, VirtGuestInfo *guest_info)
+{
+ Aml *scope, *dsdt;
+ AcpiDsdtInfo *info = guest_info->dsdt_info;
+
+ dsdt = init_aml_allocator();
+ /* Reserve space for header */
+ acpi_data_push(dsdt->buf, sizeof(AcpiTableHeader));
+
+ scope = aml_scope("\\_SB");
+ acpi_dsdt_add_cpus(scope, guest_info->smp_cpus);
+ acpi_dsdt_add_uart(scope, info->uart_memmap, info->uart_irq);
+ acpi_dsdt_add_rtc(scope, info->rtc_memmap, info->rtc_irq);
+ acpi_dsdt_add_flash(scope, info->flash_memmap);
+ acpi_dsdt_add_virtio(scope, info->virtio_mmio_memmap,
+ info->virtio_mmio_irq, info->virtio_mmio_num);
+ aml_append(dsdt, scope);
+
+ /* copy AML table into ACPI tables blob and patch header there */
+ g_array_append_vals(table_data, dsdt->buf->data, dsdt->buf->len);
+ build_header(linker, table_data,
+ (void *)(table_data->data + table_data->len - dsdt->buf->len),
+ "DSDT", dsdt->buf->len, 5);
+ free_aml_allocator();
+}
+
typedef
struct AcpiBuildState {
/* Copy of table in RAM (for patching). */
@@ -57,6 +181,7 @@ static
void virt_acpi_build(VirtGuestInfo *guest_info, AcpiBuildTables *tables)
{
GArray *table_offsets;
+ GArray *tables_blob = tables->table_data;
table_offsets = g_array_new(false, true /* clear */,
sizeof(uint32_t));
@@ -74,6 +199,9 @@ void virt_acpi_build(VirtGuestInfo *guest_info,
AcpiBuildTables *tables)
* DSDT
*/
+ /* DSDT is pointed to by FADT */
+ build_dsdt(tables_blob, tables->linker, guest_info);
+
/* Cleanup memory that's no longer used. */
g_array_free(table_offsets, true);
}
--
2.0.4
- [Qemu-devel] [PATCH v6 00/22] Generate ACPI v5.1 tables and expose them to guest over fw_cfg on ARM, Shannon Zhao, 2015/05/07
- [Qemu-devel] [PATCH v6 09/22] hw/arm/virt-acpi-build: Generate GTDT table, Shannon Zhao, 2015/05/07
- [Qemu-devel] [PATCH v6 04/22] hw/acpi/aml-build: Add aml_memory32_fixed() term, Shannon Zhao, 2015/05/07
- [Qemu-devel] [PATCH v6 08/22] hw/arm/virt-acpi-build: Generate MADT table, Shannon Zhao, 2015/05/07
- [Qemu-devel] [PATCH v6 07/22] hw/arm/virt-acpi-build: Generate FADT table and update ACPI headers, Shannon Zhao, 2015/05/07
- [Qemu-devel] [PATCH v6 02/22] hw/i386/acpi-build: move generic acpi building helpers into dedictated file, Shannon Zhao, 2015/05/07
- [Qemu-devel] [PATCH v6 06/22] hw/arm/virt-acpi-build: Generation of DSDT table for virt devices,
Shannon Zhao <=
- [Qemu-devel] [PATCH v6 05/22] hw/acpi/aml-build: Add aml_interrupt() term, Shannon Zhao, 2015/05/07
- Re: [Qemu-devel] [PATCH v6 05/22] hw/acpi/aml-build: Add aml_interrupt() term, Peter Maydell, 2015/05/07
- Re: [Qemu-devel] [PATCH v6 05/22] hw/acpi/aml-build: Add aml_interrupt() term, Shannon Zhao, 2015/05/07
- Re: [Qemu-devel] [PATCH v6 05/22] hw/acpi/aml-build: Add aml_interrupt() term, Igor Mammedov, 2015/05/15
- Re: [Qemu-devel] [PATCH v6 05/22] hw/acpi/aml-build: Add aml_interrupt() term, Shannon Zhao, 2015/05/18
- Re: [Qemu-devel] [PATCH v6 05/22] hw/acpi/aml-build: Add aml_interrupt() term, Michael S. Tsirkin, 2015/05/18
- Re: [Qemu-devel] [PATCH v6 05/22] hw/acpi/aml-build: Add aml_interrupt() term, Igor Mammedov, 2015/05/19
Re: [Qemu-devel] [PATCH v6 05/22] hw/acpi/aml-build: Add aml_interrupt() term, Igor Mammedov, 2015/05/15