diff --git a/repos/libports/src/lib/acpica/pci.cc b/repos/libports/src/lib/acpica/pci.cc
index b44e4bd026..558ed6e4b3 100644
--- a/repos/libports/src/lib/acpica/pci.cc
+++ b/repos/libports/src/lib/acpica/pci.cc
@@ -41,6 +41,17 @@ struct Bdf
 };
 
 
+static bool cpu_name(char const * name)
+{
+	unsigned cpuid = 0, edx = 0, ebx = 0, ecx = 0;
+	asm volatile ("cpuid" : "+a" (cpuid), "=d" (edx), "=b"(ebx), "=c"(ecx));
+
+	return ebx == *reinterpret_cast<unsigned const *>(name + 0) &&
+	       edx == *reinterpret_cast<unsigned const *>(name + 4) &&
+	       ecx == *reinterpret_cast<unsigned const *>(name + 8);
+}
+
+
 /*************************
  * Acpica PCI OS backend *
  *************************/
@@ -54,6 +65,26 @@ ACPI_STATUS AcpiOsReadPciConfiguration (ACPI_PCI_ID *pcidev, UINT32 reg,
 
 	Bdf bdf(pcidev->Bus, pcidev->Device, pcidev->Function);
 
+	bool const intel   = cpu_name("GenuineIntel");
+	bool const emulate = intel &&
+	                     !pcidev->Bus && !pcidev->Device && !pcidev->Function;
+
+	/*
+	 * ACPI quirk for 12th Gen Framework laptop and Thinkpad X1 Nano Gen2
+	 *
+	 * XXX emulate some of the register accesses to the Intel root bridge to
+	 *     avoid bogus calculation of physical addresses. The value seems to
+	 *     be close to the pci config start address as provided by mcfg table
+	 *     for those machines.
+	 */
+	if (emulate) {
+		if (reg == 0x60 && width == 32) {
+			*value = 0xe0000001;
+			warning(bdf, " emulate read ", Hex(reg), " -> ", Hex(*value));
+			return AE_OK;
+		}
+	}
+
 	/* during startup suppress errors */
 	if (!(AcpiDbgLevel & ACPI_LV_INIT))
 		error(__func__, " ", bdf, " ", Hex(reg), " width=", width);