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coreboot-kgpe-d16
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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>



git-svn-id: svn://svn.coreboot.org/coreboot/trunk@5931 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
This commit is contained in:
Rudolf Marek 2010-10-10 19:54:15 +00:00
parent 2a5101aba4
commit 14cc927178
1 changed files with 2 additions and 3 deletions
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5
src/southbridge/amd/sb700/sb700_ide.c
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@ -39,10 +39,9 @@ static void ide_init(struct device *dev)
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 */