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Diffstat (limited to 'src/southbridge/amd/sb800/ide.c')
-rw-r--r-- | src/southbridge/amd/sb800/ide.c | 83 |
1 files changed, 83 insertions, 0 deletions
diff --git a/src/southbridge/amd/sb800/ide.c b/src/southbridge/amd/sb800/ide.c new file mode 100644 index 0000000000..eb287f2cb2 --- /dev/null +++ b/src/southbridge/amd/sb800/ide.c @@ -0,0 +1,83 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2010 Advanced Micro Devices, Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include <console/console.h> +#include <device/device.h> +#include <device/pci.h> +#include <device/pci_ids.h> +#include <device/pci_ops.h> +#include "sb800.h" + +static void ide_init(struct device *dev) +{ + struct southbridge_amd_sb800_config *conf; + /* Enable ide devices so the linux ide driver will work */ + u32 dword; + u8 byte; + + conf = dev->chip_info; + + /* RPR9.1 disable MSI */ + /* TODO: For A14, it should set as 1. I doubt it. */ + dword = pci_read_config32(dev, 0x70); + dword &= ~(1 << 16); + pci_write_config32(dev, 0x70, dword); + + /* Ultra DMA mode */ + /* enable UDMA */ + byte = pci_read_config8(dev, 0x54); + byte |= 1 << 0; + pci_write_config8(dev, 0x54, byte); + + /* Enable I/O Access&& Bus Master */ + dword = pci_read_config16(dev, 0x4); + dword |= 1 << 2; + pci_write_config16(dev, 0x4, dword); + + /* set ide as primary, if you want to boot from IDE, you'd better set it + * in mainboard/Config.lb */ + if (conf->boot_switch_sata_ide == 1) { + byte = pci_read_config8(dev, 0xAD); + byte |= 1 << 4; + pci_write_config8(dev, 0xAD, byte); + } + +#if CONFIG_PCI_ROM_RUN == 1 + pci_dev_init(dev); +#endif +} + +static struct pci_operations lops_pci = { + .set_subsystem = pci_dev_set_subsystem, +}; + +static struct device_operations ide_ops = { + .read_resources = pci_dev_read_resources, + .set_resources = pci_dev_set_resources, + .enable_resources = pci_dev_enable_resources, + .init = ide_init, + .scan_bus = 0, + .ops_pci = &lops_pci, +}; + +static const struct pci_driver ide_driver __pci_driver = { + .ops = &ide_ops, + .vendor = PCI_VENDOR_ID_ATI, + .device = PCI_DEVICE_ID_ATI_SB800_IDE, +}; |