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authorStefan Reinauer <reinauer@chromium.org>2014-12-17 13:59:20 -0800
committerStefan Reinauer <stefan.reinauer@coreboot.org>2014-12-18 02:14:45 +0100
commit295d9e6569413556afeec7835d6e82aab5878516 (patch)
tree2eb2f542087a33b5138b4649dcbfa44ff387f343 /src/northbridge/via/cn400/agp.c
parent42874ace62a0fe7b3c54c729e3c57c330449b86b (diff)
downloadcoreboot-295d9e6569413556afeec7835d6e82aab5878516.tar.xz
Drop VIA Epia-N
ROMCC cleanup. Change-Id: Id72e6fcb89165f28cad8bf3a5b632d3fa094b7dd Signed-off-by: Stefan Reinauer <stefan.reinauer@coreboot.org> Reviewed-on: http://review.coreboot.org/7855 Tested-by: build bot (Jenkins) Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
Diffstat (limited to 'src/northbridge/via/cn400/agp.c')
-rw-r--r--src/northbridge/via/cn400/agp.c238
1 files changed, 0 insertions, 238 deletions
diff --git a/src/northbridge/via/cn400/agp.c b/src/northbridge/via/cn400/agp.c
deleted file mode 100644
index ece71e0e7d..0000000000
--- a/src/northbridge/via/cn400/agp.c
+++ /dev/null
@@ -1,238 +0,0 @@
-/*
- * This file is part of the coreboot project.
- *
- * Copyright (C) 2007 Corey Osgood <corey.osgood@gmail.com>
- *
- * 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; either version 2 of the License, or
- * (at your option) any later version.
- *
- * 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 <arch/io.h>
-#include <stdint.h>
-#include <device/device.h>
-#include <device/pci.h>
-#include <device/pci_ids.h>
-#include "northbridge.h"
-#include "cn400.h"
-
-/* This is the main AGP device, and only one used when configured for AGP 2.0 */
-static void agp_init(device_t dev)
-{
- u32 reg32;
- u8 reg8;
- int i, j;
-
- /* Some of this may not be necessary (should be handled by the OS). */
- printk(BIOS_DEBUG, "Enabling AGP.\n");
-
- /* Allow R/W access to AGP registers. */
- pci_write_config8(dev, 0x4d, 0x05);
-
- /* Setup PCI latency timer. */
- pci_write_config8(dev, 0xd, 0x8);
-
- /* Write Secondary Vendor Ids */
- pci_write_config32(dev, 0x2C, 0xAA071106);
-
- /*
- * Set to AGP 3.0 Mode, which should theoretically render the rest of
- * the registers set here pointless.
- */
- pci_write_config8(dev, 0x84, 0x1b);
-
- /* AGP Request Queue Size */
- pci_write_config8(dev, 0x4a, 0x1f);
-
- /*
- * AGP Hardware Support (default 0xc4)
- * 7: AGP SBA Enable (1 to Enable)
- * 6: AGP Enable
- * 5: Reserved
- * 4: Fast Write Enable
- * 3: AGP8X Mode Enable
- * 2: AGP4X Mode Enable
- * 1: AGP2X Mode Enable
- * 0: AGP1X Mode Enable
- */
- pci_write_config8(dev, 0x4b, 0xc4);
-
- /* Enable AGP Backdoor */
- pci_write_config8(dev, 0xb5, 0x03);
-
- /* Set aperture to 128 MB. */
- /* TODO: Use config option, explain how it works. */
- pci_write_config32(dev, 0x94, 0x00010f20);
- /* Set GART Table Base Address (31:12). */
- pci_write_config32(dev, 0x98, (0x37b20 << 12));
- /* Set AGP Aperture Base. */
- pci_write_config32(dev, 0x10, 0xe8000008);
-
- /* NMI/AGPBUSY# Function Select */
- pci_write_config8(dev, 0xbe, 0x80);
-
- /* AGP Misc Control 1 */
- pci_write_config8(dev, 0xc2, 0x40);
-
- /* Enable CPU/PMSTR GART Access and DBI function. */
- reg32 = pci_read_config8(dev, 0xbf);
- reg32 |= 0x8c;
- pci_write_config8(dev, 0xbf, reg32);
-
- /* Enable AGP Aperture. */
- pci_write_config32(dev, 0x90, 0x0180);
-
- /* AGP Control */
- pci_write_config8(dev, 0xbc, 0x25);
- pci_write_config8(dev, 0xbd, 0xd2);
-
- /*
- * AGP Pad, driving strength, and delay control. All this should be
- * constant, seeing as the VGA controller is onboard.
- */
- pci_write_config8(dev, 0x40, 0xda);
- pci_write_config8(dev, 0x41, 0xca);
- pci_write_config8(dev, 0x42, 0x01);
- pci_write_config8(dev, 0x43, 0xca);
- pci_write_config8(dev, 0x44, 0x04);
-
- /* AGPC CKG Control */
- pci_write_config8(dev, 0xc0, 0x04);
- pci_write_config8(dev, 0xc1, 0x02);
-
-#ifdef DEBUG_CN400
- printk(BIOS_SPEW, "%s PCI Header Regs::\n", dev_path(dev));
-
- for (i = 0 ; i < 16; i++)
- {
- printk(BIOS_SPEW, "%02X: ", i*16);
- for (j = 0; j < 16; j++)
- {
- reg8 = pci_read_config8(dev, j+(i*16));
- printk(BIOS_SPEW, "%02X ", reg8);
- }
- printk(BIOS_SPEW, "\n");
- }
-#endif
-}
-
-static const struct device_operations agp_operations = {
- .read_resources = DEVICE_NOOP,
- .set_resources = pci_dev_set_resources,
- .enable_resources = pci_dev_enable_resources,
- .init = agp_init,
- .ops_pci = 0,
-};
-
-static const struct pci_driver agp_driver __pci_driver = {
- .ops = &agp_operations,
- .vendor = PCI_VENDOR_ID_VIA,
- .device = PCI_DEVICE_ID_VIA_CN400_AGP,
-};
-
-static void agp_bridge_read_resources (device_t dev)
-{
- struct resource *res;
-
- res = new_resource(dev, 1);
- res->base = 0xF0000000ULL;
- res->size = 0x06000000ULL;
- res->limit = 0xffffffffULL;
- res->flags = IORESOURCE_MEM | IORESOURCE_FIXED |
- IORESOURCE_STORED | IORESOURCE_ASSIGNED;
-
- res = new_resource(dev, 2);
- res->base = 0xB000UL;
- res->size = 4096;
- res->limit = 0xffffUL;
- res->flags = IORESOURCE_IO | IORESOURCE_FIXED |
- IORESOURCE_STORED | IORESOURCE_ASSIGNED;
-
-}
-/*
- * This is the AGP 3.0 "bridge" @Bus 0 Device 1 Func 0. When using AGP 3.0, the
- * config in this device takes presidence. We configure both just to be safe.
- */
-static void agp_bridge_init(device_t dev)
-{
- u8 reg8;
- int i, j;
-
- printk(BIOS_DEBUG, "Entering %s\n", __func__);
-
- pci_write_config16(dev, 0x4, 0x0107);
-
- /* Secondary Bus Number */
- pci_write_config8(dev, 0x19, 0x01);
- /* Subordinate Bus Number */
- pci_write_config8(dev, 0x1a, 0x01);
-
- /* I/O Base */
- pci_write_config8(dev, 0x1c, 0xf0);
-
- /* I/O Limit */
- pci_write_config8(dev, 0x1d, 0x00);
-
- /* Memory Base */
- pci_write_config16(dev, 0x20, 0xf400);
-
- /* Memory Limit */
- pci_write_config16(dev, 0x22, 0xf5f0);
-
- /* Prefetchable Memory Base */
- pci_write_config16(dev, 0x24, 0xf000);
-
- /* Prefetchable Memory Limit */
- pci_write_config16(dev, 0x26, 0xf3f0);
-
- /* Enable VGA Compatible Memory/IO Range */
- pci_write_config8(dev, 0x3e, 0x0e);
-
- /* AGP Bus Control */
- pci_write_config8(dev, 0x40, 0x83);
- pci_write_config8(dev, 0x41, 0xC7);
- pci_write_config8(dev, 0x42, 0x02);
- pci_write_config8(dev, 0x43, 0x44);
- pci_write_config8(dev, 0x44, 0x34);
- pci_write_config8(dev, 0x45, 0x72);
-
- printk(BIOS_SPEW, "%s PCI Header Regs::\n", dev_path(dev));
-
- for (i = 0 ; i < 16; i++)
- {
- printk(BIOS_SPEW, "%02X: ", i*16);
- for (j = 0; j < 16; j++)
- {
- reg8 = pci_read_config8(dev, j+(i*16));
- printk(BIOS_SPEW, "%02X ", reg8);
- }
- printk(BIOS_SPEW, "\n");
- }
-
-}
-
-static const struct device_operations agp_bridge_operations = {
- .read_resources = agp_bridge_read_resources,
- .set_resources = pci_dev_set_resources,
- .enable_resources = pci_bus_enable_resources,
- .init = agp_bridge_init,
- .scan_bus = pci_scan_bridge,
- .ops_pci = 0,
-};
-
-static const struct pci_driver agp_bridge_driver __pci_driver = {
- .ops = &agp_bridge_operations,
- .vendor = PCI_VENDOR_ID_VIA,
- .device = PCI_DEVICE_ID_VIA_CN400_BRIDGE,
-};