[commit] r5933 - trunk/src/southbridge/amd/sb600 - coreboot

10 Oct 2010

Author: ruik
Date: Sun Oct 10 22:43:00 2010
New Revision: 5933
URL: https://tracker.coreboot.org/trac/coreboot/changeset/5933
Log:
Same applies for SB600.
Following patch enables UDMA on ALL IDE devices. The current code enables it only for primary master, which causes my DVD drive to fail under windows install
and even after hard reset in linux (DMA seems lockup).
The fix should not have any influence for Linux because the IDE driver will
correctly reprogram this bit.
Signed-off-by: Rudolf Marek r.marek@assembler.cz 
Acked-by: Uwe Hermann uwe@hermann-uwe.de
Modified:
   trunk/src/southbridge/amd/sb600/sb600_ide.c
Modified: trunk/src/southbridge/amd/sb600/sb600_ide.c
==============================================================================

--- trunk/src/southbridge/amd/sb600/sb600_ide.c	Sun Oct 10 21:55:32 2010	(r5932)
+++ trunk/src/southbridge/amd/sb600/sb600_ide.c	Sun Oct 10 22:43:00 2010	(r5933)
@@ -35,10 +35,9 @@
    dword &= ~(1 << 16);
    pci_write_config32(dev, 0x70, dword);
-	/* Ultra DMA mode */
-	/* enable UDMA */
+	/* Enable UDMA on all devices, it will become UDMA0 (default PIO is PIO0) */
    byte = pci_read_config8(dev, 0x54);
-	byte |= 1 << 0;
+	byte |= 0xf;
    pci_write_config8(dev, 0x54, byte);
/* Enable I/O Access&& Bus Master */

    