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[Qemu-devel] [RFC PATCH v3 05/11] hw/arm/virt-acpi-build: Generation of
From: |
Shannon Zhao |
Subject: |
[Qemu-devel] [RFC PATCH v3 05/11] hw/arm/virt-acpi-build: Generation of DSDT table for virt devices |
Date: |
Tue, 17 Feb 2015 10:08:43 +0800 |
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>
---
hw/arm/virt-acpi-build.c | 133 ++++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 133 insertions(+), 0 deletions(-)
diff --git a/hw/arm/virt-acpi-build.c b/hw/arm/virt-acpi-build.c
index 647a1fd..dec70a9 100644
--- a/hw/arm/virt-acpi-build.c
+++ b/hw/arm/virt-acpi-build.c
@@ -57,6 +57,133 @@
#define ACPI_BUILD_DPRINTF(fmt, ...)
#endif
+static void acpi_dsdt_add_cpus(Aml *scope, int max_cpus)
+{
+ Aml *dev, *crs;
+ int i;
+ char name[5];
+ for (i = 0; i < max_cpus; i++) {
+ snprintf(name, 5, "CPU%u", i);
+ dev = aml_device("%s", name);
+ aml_append(dev, aml_name_decl("_HID", aml_string("ACPI007")));
+ aml_append(dev, aml_name_decl("_UID", aml_int(i)));
+ 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 hwaddr *uart_addr,
+ const int *uart_irq)
+{
+ Aml *dev, *crs;
+
+ dev = aml_device("COM0");
+ aml_append(dev, aml_name_decl("_HID", aml_string("ARMH0011")));
+ aml_append(dev, aml_name_decl("_UID", aml_int(0)));
+
+ crs = aml_resource_template();
+ aml_append(crs,
+ aml_memory32_fixed(uart_addr[0], uart_addr[1], 0x01));
+ aml_append(crs,
+ aml_interrupt(0x01, *uart_irq + 32));
+ aml_append(dev, aml_name_decl("_CRS", crs));
+ aml_append(scope, dev);
+}
+
+static void acpi_dsdt_add_rtc(Aml *scope, const hwaddr *rtc_addr,
+ const int *rtc_irq)
+{
+ Aml *dev, *crs;
+
+ dev = aml_device("RTC0");
+ aml_append(dev, aml_name_decl("_HID", aml_string("LNRO0013")));
+ aml_append(dev, aml_name_decl("_UID", aml_int(0)));
+
+ crs = aml_resource_template();
+ aml_append(crs,
+ aml_memory32_fixed(rtc_addr[0], rtc_addr[1], 0x01));
+ aml_append(crs,
+ aml_interrupt(0x01, *rtc_irq + 32));
+ aml_append(dev, aml_name_decl("_CRS", crs));
+ aml_append(scope, dev);
+}
+
+static void acpi_dsdt_add_flash(Aml *scope, const hwaddr *flash_addr)
+{
+ Aml *dev, *crs;
+ hwaddr base = flash_addr[0];
+ hwaddr size = flash_addr[1];
+
+ 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, 0x01));
+ 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, 0x01));
+ aml_append(dev, aml_name_decl("_CRS", crs));
+ aml_append(scope, dev);
+}
+
+static void acpi_dsdt_add_virtio(Aml *scope, const hwaddr *mmio_addrs,
+ const int *mmio_irq, int num)
+{
+ Aml *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 = aml_device("%s", name);
+ aml_append(dev, aml_name_decl("_HID", aml_string("LNRO0005")));
+ aml_append(dev, aml_name_decl("_UID", aml_int(i)));
+
+ crs = aml_resource_template();
+ aml_append(crs,
+ aml_memory32_fixed(base, size, 0x01));
+ aml_append(crs,
+ aml_interrupt(0x01, irq + i));
+ aml_append(dev, aml_name_decl("_CRS", crs));
+ aml_append(scope, dev);
+ base += size;
+ }
+}
+
+/* DSDT */
+static void
+build_dsdt(Aml *table_data, GArray *linker, VirtGuestInfo *guest_info)
+{
+ Aml *scope, *dsdt;
+ const struct acpi_dsdt_info *info = guest_info->dsdt_info;
+
+ dsdt = aml_def_block("DSDT", 1, ACPI_BUILD_APPNAME6,
+ ACPI_BUILD_APPNAME4, 1,
+ ACPI_BUILD_APPNAME4_HEX, 1);
+ scope = aml_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_data, dsdt);
+}
+
typedef
struct AcpiBuildState {
/* Copy of table in RAM (for patching). */
@@ -74,6 +201,8 @@ static
void virt_acpi_build(VirtGuestInfo *guest_info, AcpiBuildTables *tables)
{
GArray *table_offsets;
+ unsigned dsdt;
+ GArray *tables_blob = tables->table_data->buf;
table_offsets = g_array_new(false, true /* clear */,
sizeof(uint32_t));
@@ -91,6 +220,10 @@ void virt_acpi_build(VirtGuestInfo *guest_info,
AcpiBuildTables *tables)
* DSDT
*/
+ /* DSDT is pointed to by FADT */
+ dsdt = tables_blob->len;
+ build_dsdt(tables->table_data, tables->linker, guest_info);
+
/* Cleanup memory that's no longer used. */
g_array_free(table_offsets, true);
}
--
1.7.1
- [Qemu-devel] [RFC PATCH v3 00/11] Generate ACPI v5.1 tables and expose it to guest over fw_cfg on ARM, Shannon Zhao, 2015/02/16
- [Qemu-devel] [RFC PATCH v3 04/11] hw/acpi/aml-build: Add aml_memory32_fixed() and aml_interrupt(), Shannon Zhao, 2015/02/16
- [Qemu-devel] [RFC PATCH v3 08/11] hw/arm/virt-acpi-build: Generate GTDT table, Shannon Zhao, 2015/02/16
- [Qemu-devel] [RFC PATCH v3 03/11] hw/arm/virt-acpi-build: Basic framework for building ACPI tables on ARM, Shannon Zhao, 2015/02/16
- [Qemu-devel] [RFC PATCH v3 09/11] hw/arm/virt-acpi-build: Generate RSDT table, Shannon Zhao, 2015/02/16
- [Qemu-devel] [RFC PATCH v3 06/11] hw/arm/virt-acpi-build: Generate FADT table and update ACPI headers, Shannon Zhao, 2015/02/16
- [Qemu-devel] [RFC PATCH v3 01/11] hw/i386: Move ACPI header definitions in an arch-independent location, Shannon Zhao, 2015/02/16
- [Qemu-devel] [RFC PATCH v3 02/11] hw/i386/acpi-build: move generic acpi building helpers into dedictated file, Shannon Zhao, 2015/02/16
- [Qemu-devel] [RFC PATCH v3 07/11] hw/arm/virt-acpi-build: Generate MADT table, Shannon Zhao, 2015/02/16
- [Qemu-devel] [RFC PATCH v3 05/11] hw/arm/virt-acpi-build: Generation of DSDT table for virt devices,
Shannon Zhao <=
- [Qemu-devel] [RFC PATCH v3 10/11] hw/arm/virt-acpi-build: Generate RSDP table, Shannon Zhao, 2015/02/16
- [Qemu-devel] [RFC PATCH v3 11/11] hw/arm/virt: Enable dynamic generation of ACPI v5.1 tables, Shannon Zhao, 2015/02/16