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[Qemu-devel] [RFC PATCH v2 05/11] hw/arm/virt-acpi-build: Generation of
From: |
Shannon Zhao |
Subject: |
[Qemu-devel] [RFC PATCH v2 05/11] hw/arm/virt-acpi-build: Generation of DSDT table for virt devices |
Date: |
Thu, 29 Jan 2015 16:37:07 +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 | 131 ++++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 131 insertions(+), 0 deletions(-)
diff --git a/hw/arm/virt-acpi-build.c b/hw/arm/virt-acpi-build.c
index 2f72b1e..8560dae 100644
--- a/hw/arm/virt-acpi-build.c
+++ b/hw/arm/virt-acpi-build.c
@@ -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);
}
--
1.7.1
- [Qemu-devel] [RFC PATCH v2 00/11] Generate ACPI v5.1 tables and expose it to guest over fw_cfg on ARM, Shannon Zhao, 2015/01/29
- [Qemu-devel] [RFC PATCH v2 09/11] hw/arm/virt-acpi-build: Generate XSDT table, Shannon Zhao, 2015/01/29
- [Qemu-devel] [RFC PATCH v2 04/11] hw/acpi/acpi-build-utils: Add acpi_memory32_fixed() and acpi_interrupt(), Shannon Zhao, 2015/01/29
- [Qemu-devel] [RFC PATCH v2 05/11] hw/arm/virt-acpi-build: Generation of DSDT table for virt devices,
Shannon Zhao <=
- [Qemu-devel] [RFC PATCH v2 10/11] hw/arm/virt-acpi-build: Generate RSDP table, Shannon Zhao, 2015/01/29
- [Qemu-devel] [RFC PATCH v2 06/11] hw/arm/virt-acpi-build: Generate FADT table and update ACPI headers, Shannon Zhao, 2015/01/29
- [Qemu-devel] [RFC PATCH v2 02/11] hw/i386/acpi-build: move generic acpi building helpers into dedictated file, Shannon Zhao, 2015/01/29
- [Qemu-devel] [RFC PATCH v2 01/11] hw/i386: Move ACPI header definitions in an arch-independent location, Shannon Zhao, 2015/01/29
- [Qemu-devel] [RFC PATCH v2 03/11] hw/arm/virt-acpi-build: Basic framework for building ACPI tables on ARM, Shannon Zhao, 2015/01/29
- [Qemu-devel] [RFC PATCH v2 08/11] hw/arm/virt-acpi-build: Generate GTDT table, Shannon Zhao, 2015/01/29
- [Qemu-devel] [RFC PATCH v2 07/11] hw/arm/virt-acpi-build: Generate MADT table, Shannon Zhao, 2015/01/29
- [Qemu-devel] [RFC PATCH v2 11/11] hw/arm/virt: Enable dynamic generation of ACPI v5.1 tables, Shannon Zhao, 2015/01/29