From 2b1c2e8e5f1990f0a201a8cbf9d366fca60f4aa8 Mon Sep 17 00:00:00 2001 From: Igor Mammedov Date: Fri, 8 Apr 2016 13:23:13 +0200 Subject: [PATCH] pc: acpi: tpm: add missing MMIO resource to PCI0._CRS Windows will fail initialize TMP driver with the reason: 'device cannot find enough free resources' That happens because parent BUS doesn't describe MMIO resources used by TPM child device. Fix it by describing it in top-most parent bus scope PCI0. It was 'regressed' by commit 5cb18b3d TPM2 ACPI table support with following fixup 9e472263 acpi: add missing ssdt which did the right thing by moving TPM to BUS it belongs to but lacked a proper resource declaration. Signed-off-by: Igor Mammedov Reviewed-by: Michael S. Tsirkin Signed-off-by: Michael S. Tsirkin --- hw/i386/acpi-build.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/hw/i386/acpi-build.c b/hw/i386/acpi-build.c index 35180efe0c..784870ea8a 100644 --- a/hw/i386/acpi-build.c +++ b/hw/i386/acpi-build.c @@ -2167,6 +2167,11 @@ build_dsdt(GArray *table_data, GArray *linker, 0, pci->w64.begin, pci->w64.end - 1, 0, pci->w64.end - pci->w64.begin)); } + + if (misc->tpm_version != TPM_VERSION_UNSPEC) { + aml_append(crs, aml_memory32_fixed(TPM_TIS_ADDR_BASE, + TPM_TIS_ADDR_SIZE, AML_READ_WRITE)); + } aml_append(scope, aml_name_decl("_CRS", crs)); /* reserve GPE0 block resources */