diff options
Diffstat (limited to 'hw/i386/acpi-build.c')
| -rw-r--r-- | hw/i386/acpi-build.c | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/hw/i386/acpi-build.c b/hw/i386/acpi-build.c index c52718f207..07d13ae4c0 100644 --- a/hw/i386/acpi-build.c +++ b/hw/i386/acpi-build.c @@ -52,6 +52,7 @@ #include "hw/pci/pci_bus.h" #include "hw/pci-host/q35.h" #include "hw/i386/intel_iommu.h" +#include "hw/timer/hpet.h" #include "hw/i386/q35-acpi-dsdt.hex" #include "hw/i386/acpi-dsdt.hex" @@ -1147,6 +1148,57 @@ static void build_memory_devices(Aml *sb_scope, int nr_mem, aml_append(sb_scope, method); } +static void build_hpet_aml(Aml *table) +{ + Aml *crs; + Aml *field; + Aml *method; + Aml *if_ctx; + Aml *scope = aml_scope("_SB"); + Aml *dev = aml_device("HPET"); + Aml *zero = aml_int(0); + Aml *id = aml_local(0); + Aml *period = aml_local(1); + + aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0103"))); + aml_append(dev, aml_name_decl("_UID", zero)); + + aml_append(dev, + aml_operation_region("HPTM", AML_SYSTEM_MEMORY, HPET_BASE, HPET_LEN)); + field = aml_field("HPTM", AML_DWORD_ACC, AML_LOCK, AML_PRESERVE); + aml_append(field, aml_named_field("VEND", 32)); + aml_append(field, aml_named_field("PRD", 32)); + aml_append(dev, field); + + method = aml_method("_STA", 0, AML_NOTSERIALIZED); + aml_append(method, aml_store(aml_name("VEND"), id)); + aml_append(method, aml_store(aml_name("PRD"), period)); + aml_append(method, aml_shiftright(id, aml_int(16), id)); + if_ctx = aml_if(aml_lor(aml_equal(id, zero), + aml_equal(id, aml_int(0xffff)))); + { + aml_append(if_ctx, aml_return(zero)); + } + aml_append(method, if_ctx); + + if_ctx = aml_if(aml_lor(aml_equal(period, zero), + aml_lgreater(period, aml_int(100000000)))); + { + aml_append(if_ctx, aml_return(zero)); + } + aml_append(method, if_ctx); + + aml_append(method, aml_return(aml_int(0x0F))); + aml_append(dev, method); + + crs = aml_resource_template(); + aml_append(crs, aml_memory32_fixed(HPET_BASE, HPET_LEN, AML_READ_ONLY)); + aml_append(dev, aml_name_decl("_CRS", crs)); + + aml_append(scope, dev); + aml_append(table, scope); +} + static void build_ssdt(GArray *table_data, GArray *linker, AcpiCpuInfo *cpu, AcpiPmInfo *pm, AcpiMiscInfo *misc, @@ -1167,6 +1219,7 @@ build_ssdt(GArray *table_data, GArray *linker, /* Reserve space for header */ acpi_data_push(ssdt->buf, sizeof(AcpiTableHeader)); + build_hpet_aml(ssdt); build_cpu_hotplug_aml(ssdt); build_memory_hotplug_aml(ssdt, nr_mem, pm->mem_hp_io_base, pm->mem_hp_io_len); |