From 474eeedbc85545fce4e5feba21e79bd043d2f858 Mon Sep 17 00:00:00 2001 From: Steven Sherk Date: Wed, 22 May 2013 13:49:18 -0600 Subject: AMD Trinity boards: Add reserved memory area for SPI base address in ACPI - SPI controller base address gets overwritten by SD controller under Linux. - Reason for overwrite is the SPI base address isn't in a standard BAR and doesn't get automatically reserved. Solution is to add it as a reserved memory area in ACPI. - This issue was found on the ASUS F2A85-M platform. Currently a workaround on this platform was made as part of: http://review.coreboot.org/#/c/3167/3 - Once approved a follow-on patch for other southbridges using a non-standard BAR for the spi controller. Change-Id: I1b67da3045729a6754e245141cd83c5b3cc9009e Signed-off-by: Steven Sherk Reviewed-on: http://review.coreboot.org/3270 Tested-by: build bot (Jenkins) Reviewed-by: Marc Jones Reviewed-by: Ronald G. Minnich --- src/mainboard/asus/f2a85-m/dsdt.asl | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) (limited to 'src/mainboard/asus') diff --git a/src/mainboard/asus/f2a85-m/dsdt.asl b/src/mainboard/asus/f2a85-m/dsdt.asl index d9f8fa467e..dc0fdaa26f 100644 --- a/src/mainboard/asus/f2a85-m/dsdt.asl +++ b/src/mainboard/asus/f2a85-m/dsdt.asl @@ -1235,6 +1235,33 @@ DefinitionBlock ( * DBGO("\\_SB\\PCI0\\LpcIsaBr\\_INI\n") } */ /* End Method(_SB.SBRDG._INI) */ + OperationRegion(CFG,PCI_Config,0x0,0x100) // Map PCI Configuration Space + Field(CFG,DWordAcc,NoLock,Preserve){ + Offset(0xA0), + BAR,32} // SPI Controller Base Address Register (Index 0xA0) + + Device(LDRC) // LPC device: Resource consumption + { + Name (_HID, EISAID("PNP0C02")) // ID for Motherboard resources + Name (CRS, ResourceTemplate () // Current Motherboard resources + { + Memory32Fixed(ReadWrite, // Setup for fixed resource location for SPI base address + 0x00000000, // Address Base + 0x00000000, // Address Length + BAR0 // Descriptor Name + ) + }) + + Method(_CRS,0,NotSerialized) + { + CreateDwordField(^CRS,^BAR0._BAS,SPIB) // Field to hold SPI base address + CreateDwordField(^CRS,^BAR0._LEN,SPIL) // Field to hold SPI address length + Store(BAR,SPIB) // SPI base address mapped + Store(0x1000,SPIL) // 4k space mapped + Return(CRS) + } + } + /* Real Time Clock Device */ Device(RTC0) { Name(_HID, EISAID("PNP0B00")) /* AT Real Time Clock (not PIIX4 compatible) */ -- cgit v1.2.3