x86: tangier: Reserve PCI ECAM in motherboard resources
Per PCI firmware specification the ACPI has to reserve the memory
which is defined as PCI ECAM.
Fixes: 39665beed6f7 ("x86: tangier: Enable ACPI support for Intel Tangier")
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
diff --git a/arch/x86/include/asm/arch-tangier/acpi/platform.asl b/arch/x86/include/asm/arch-tangier/acpi/platform.asl
index a75b388..cf75ca7 100644
--- a/arch/x86/include/asm/arch-tangier/acpi/platform.asl
+++ b/arch/x86/include/asm/arch-tangier/acpi/platform.asl
@@ -6,6 +6,7 @@
*/
#include <asm/acpi/statdef.asl>
+#include <asm/arch/iomap.h>
/*
* The _PTS method (Prepare To Sleep) is called before the OS is
diff --git a/arch/x86/include/asm/arch-tangier/acpi/southcluster.asl b/arch/x86/include/asm/arch-tangier/acpi/southcluster.asl
index 1b9d808b..f73a6b3 100644
--- a/arch/x86/include/asm/arch-tangier/acpi/southcluster.asl
+++ b/arch/x86/include/asm/arch-tangier/acpi/southcluster.asl
@@ -66,6 +66,23 @@
Return (MCRS)
}
+ /* Device Resource Consumption */
+ Device (PDRC)
+ {
+ Name (_HID, EISAID("PNP0C02"))
+ Name (_UID, One)
+
+ Name (PDRS, ResourceTemplate()
+ {
+ Memory32Fixed(ReadWrite, MCFG_BASE_ADDRESS, MCFG_BASE_SIZE)
+ })
+
+ Method (_CRS, 0, Serialized)
+ {
+ Return (PDRS)
+ }
+ }
+
Method (_OSC, 4)
{
/* Check for proper GUID */
diff --git a/arch/x86/include/asm/arch-tangier/iomap.h b/arch/x86/include/asm/arch-tangier/iomap.h
new file mode 100644
index 0000000..b0fc03e
--- /dev/null
+++ b/arch/x86/include/asm/arch-tangier/iomap.h
@@ -0,0 +1,10 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/* Copyright (c) 2019 Intel Corporation */
+
+#ifndef _TANGIER_IOMAP_H
+#define _TANGIER_IOMAP_H
+
+#define MCFG_BASE_ADDRESS 0x3f500000
+#define MCFG_BASE_SIZE 0x00100000
+
+#endif /* _TANGIER_IOMAP_H */