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author | Stefan Reinauer <stepan@coresystems.de> | 2009-03-11 16:20:39 +0000 |
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committer | Stefan Reinauer <stepan@openbios.org> | 2009-03-11 16:20:39 +0000 |
commit | 30140a59f7c34b583b670401a205338e0c8e3311 (patch) | |
tree | 07b6d6f8c10c804ae3d0e0e9b6eb6f73511a29d7 /src/northbridge/intel/i945/gma.c | |
parent | d229677b6191868661676658d84d7325d8f69f23 (diff) | |
download | coreboot-staging-30140a59f7c34b583b670401a205338e0c8e3311.zip coreboot-staging-30140a59f7c34b583b670401a205338e0c8e3311.tar.gz |
i945 northbridge update
- lots of PCIe updates
- various bug fixes to early init
- some fixes for typos and warnings
- initial support for PCIe x16
- some minor fixes to memory init code
- some subsystem vendor id patches, to be consistent with ICH7
Signed-off-by: Stefan Reinauer <stepan@coresystems.de>
Acked-by: Peter Stuge <peter@stuge.se>
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@3997 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
Diffstat (limited to 'src/northbridge/intel/i945/gma.c')
-rw-r--r-- | src/northbridge/intel/i945/gma.c | 93 |
1 files changed, 93 insertions, 0 deletions
diff --git a/src/northbridge/intel/i945/gma.c b/src/northbridge/intel/i945/gma.c new file mode 100644 index 0000000..7e1049c --- /dev/null +++ b/src/northbridge/intel/i945/gma.c @@ -0,0 +1,93 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2008-2009 coresystems GmbH + * + * 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> + +static void gma_func0_init(struct device *dev) +{ + u32 reg32; + + /* IGD needs to be Bus Master */ + reg32 = pci_read_config32(dev, PCI_COMMAND); + pci_write_config32(dev, PCI_COMMAND, reg32 | PCI_COMMAND_MASTER); + + pci_dev_init(dev); +} + +static void gma_func1_init(struct device *dev) +{ + u32 reg32; + + /* IGD needs to be Bus Master, also enable IO accesss */ + reg32 = pci_read_config32(dev, PCI_COMMAND); + pci_write_config32(dev, PCI_COMMAND, reg32 | + PCI_COMMAND_MASTER | PCI_COMMAND_IO); +} + +static void gma_set_subsystem(device_t dev, unsigned vendor, unsigned device) +{ + if (!vendor || !device) { + pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID, + pci_read_config32(dev, PCI_VENDOR_ID)); + } else { + pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID, + ((device & 0xffff) << 16) | (vendor & 0xffff)); + } +} + +static struct pci_operations gma_pci_ops = { + .set_subsystem = gma_set_subsystem, +}; + +static struct device_operations gma_func0_ops = { + .read_resources = pci_dev_read_resources, + .set_resources = pci_dev_set_resources, + .enable_resources = pci_dev_enable_resources, + .init = gma_func0_init, + .scan_bus = 0, + .enable = 0, + .ops_pci = &gma_pci_ops, +}; + + +static struct device_operations gma_func1_ops = { + .read_resources = pci_dev_read_resources, + .set_resources = pci_dev_set_resources, + .enable_resources = pci_dev_enable_resources, + .init = gma_func1_init, + .scan_bus = 0, + .enable = 0, + .ops_pci = &gma_pci_ops, +}; + +static const struct pci_driver i945_gma_func0_driver __pci_driver = { + .ops = &gma_func0_ops, + .vendor = PCI_VENDOR_ID_INTEL, + .device = 0x27a2, +}; + +static const struct pci_driver i945_gma_func1_driver __pci_driver = { + .ops = &gma_func1_ops, + .vendor = PCI_VENDOR_ID_INTEL, + .device = 0x27a6, +}; + |