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| author | Steven Sherk <steven.sherk@se-eng.com> | 2013-05-22 13:49:18 -0600 |
|---|---|---|
| committer | Ronald G. Minnich <rminnich@gmail.com> | 2013-05-31 18:17:49 +0200 |
| commit | 474eeedbc85545fce4e5feba21e79bd043d2f858 (patch) | |
| tree | 22efd0bd0f8a0e0553f5d1b2cefb2834f5ec18f4 /src/mainboard/asus/f2a85-m | |
| parent | 0390112407c042211428a2aee1ab77422caab338 (diff) | |
| download | coreboot-474eeedbc85545fce4e5feba21e79bd043d2f858.tar.xz | |
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 <steven.sherk@se-eng.com>
Reviewed-on: http://review.coreboot.org/3270
Tested-by: build bot (Jenkins)
Reviewed-by: Marc Jones <marc.jones@se-eng.com>
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
Diffstat (limited to 'src/mainboard/asus/f2a85-m')
| -rw-r--r-- | src/mainboard/asus/f2a85-m/dsdt.asl | 27 |
1 files changed, 27 insertions, 0 deletions
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) */ |