From 77af8a2b95b79699de650965d5228772743efe84 Mon Sep 17 00:00:00 2001 From: Phil Dennis-Jordan Date: Wed, 15 Mar 2017 19:20:26 +1300 Subject: hw/i386: Use Rev3 FADT (ACPI 2.0) instead of Rev1 to improve guest OS support. This updates the FADT generated for x86/64 machine types from Revision 1 to 3. (Based on ACPI standard 2.0 instead of 1.0) The intention is to expose the reset register information to guest operating systems which require it, specifically OS X/macOS. Revision 1 FADTs do not contain the fields relating to the reset register. The new layout and contents remains backwards-compatible with operating systems which only support ACPI 1.0, as the existing fields are not modified by this change, as the 64-bit and 32-bit variants are allowed to co-exist according to the ACPI 2.0 standard. No regressions became apparent in tests with a range of Windows (XP-10) and Linux versions. The BIOS tables test suite's FADT checksum test has also been updated to reflect the new FADT layout and content. Signed-off-by: Phil Dennis-Jordan Message-Id: <1489558827-28971-2-git-send-email-phil@philjordan.eu> Signed-off-by: Paolo Bonzini --- hw/i386/acpi-build.c | 32 +++++++++++++++++++++++++++++--- 1 file changed, 29 insertions(+), 3 deletions(-) (limited to 'hw/i386') diff --git a/hw/i386/acpi-build.c b/hw/i386/acpi-build.c index 2073108..7997f06 100644 --- a/hw/i386/acpi-build.c +++ b/hw/i386/acpi-build.c @@ -272,7 +272,7 @@ build_facs(GArray *table_data, BIOSLinker *linker) } /* Load chipset information in FADT */ -static void fadt_setup(AcpiFadtDescriptorRev1 *fadt, AcpiPmInfo *pm) +static void fadt_setup(AcpiFadtDescriptorRev3 *fadt, AcpiPmInfo *pm) { fadt->model = 1; fadt->reserved1 = 0; @@ -304,6 +304,28 @@ static void fadt_setup(AcpiFadtDescriptorRev1 *fadt, AcpiPmInfo *pm) fadt->flags |= cpu_to_le32(1 << ACPI_FADT_F_FORCE_APIC_CLUSTER_MODEL); } fadt->century = RTC_CENTURY; + + fadt->flags |= cpu_to_le32(1 << ACPI_FADT_F_RESET_REG_SUP); + fadt->reset_value = 0xf; + fadt->reset_register.space_id = AML_SYSTEM_IO; + fadt->reset_register.bit_width = 8; + fadt->reset_register.address = cpu_to_le64(ICH9_RST_CNT_IOPORT); + + fadt->xpm1a_event_block.space_id = AML_SYSTEM_IO; + fadt->xpm1a_event_block.bit_width = fadt->pm1_evt_len * 8; + fadt->xpm1a_event_block.address = cpu_to_le64(pm->io_base); + + fadt->xpm1a_control_block.space_id = AML_SYSTEM_IO; + fadt->xpm1a_control_block.bit_width = fadt->pm1_cnt_len * 8; + fadt->xpm1a_control_block.address = cpu_to_le64(pm->io_base + 0x4); + + fadt->xpm_timer_block.space_id = AML_SYSTEM_IO; + fadt->xpm_timer_block.bit_width = fadt->pm_tmr_len * 8; + fadt->xpm_timer_block.address = cpu_to_le64(pm->io_base + 0x8); + + fadt->xgpe0_block.space_id = AML_SYSTEM_IO; + fadt->xgpe0_block.bit_width = pm->gpe0_blk_len * 8; + fadt->xgpe0_block.address = cpu_to_le64(pm->gpe0_blk); } @@ -313,9 +335,10 @@ build_fadt(GArray *table_data, BIOSLinker *linker, AcpiPmInfo *pm, unsigned facs_tbl_offset, unsigned dsdt_tbl_offset, const char *oem_id, const char *oem_table_id) { - AcpiFadtDescriptorRev1 *fadt = acpi_data_push(table_data, sizeof(*fadt)); + AcpiFadtDescriptorRev3 *fadt = acpi_data_push(table_data, sizeof(*fadt)); unsigned fw_ctrl_offset = (char *)&fadt->firmware_ctrl - table_data->data; unsigned dsdt_entry_offset = (char *)&fadt->dsdt - table_data->data; + unsigned xdsdt_entry_offset = (char *)&fadt->Xdsdt - table_data->data; /* FACS address to be filled by Guest linker */ bios_linker_loader_add_pointer(linker, @@ -327,9 +350,12 @@ build_fadt(GArray *table_data, BIOSLinker *linker, AcpiPmInfo *pm, bios_linker_loader_add_pointer(linker, ACPI_BUILD_TABLE_FILE, dsdt_entry_offset, sizeof(fadt->dsdt), ACPI_BUILD_TABLE_FILE, dsdt_tbl_offset); + bios_linker_loader_add_pointer(linker, + ACPI_BUILD_TABLE_FILE, xdsdt_entry_offset, sizeof(fadt->Xdsdt), + ACPI_BUILD_TABLE_FILE, dsdt_tbl_offset); build_header(linker, table_data, - (void *)fadt, "FACP", sizeof(*fadt), 1, oem_id, oem_table_id); + (void *)fadt, "FACP", sizeof(*fadt), 3, oem_id, oem_table_id); } void pc_madt_cpu_entry(AcpiDeviceIf *adev, int uid, -- cgit v1.1