Author: ruik Date: Sun Oct 10 21:54:15 2010 New Revision: 5931 URL: https://tracker.coreboot.org/trac/coreboot/changeset/5931
Log: 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 <[email protected]> Acked-by: Uwe Hermann <[email protected]> Modified: trunk/src/southbridge/amd/sb700/sb700_ide.c Modified: trunk/src/southbridge/amd/sb700/sb700_ide.c ============================================================================== --- trunk/src/southbridge/amd/sb700/sb700_ide.c Sun Oct 10 17:18:53 2010 (r5930) +++ trunk/src/southbridge/amd/sb700/sb700_ide.c Sun Oct 10 21:54:15 2010 (r5931) @@ -39,10 +39,9 @@ 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 */ -- coreboot mailing list: [email protected] http://www.coreboot.org/mailman/listinfo/coreboot
