diff options
author | Bari Ari <bari@onelabs.com> | 2009-05-27 13:12:42 +0000 |
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committer | Uwe Hermann <uwe@hermann-uwe.de> | 2009-05-27 13:12:42 +0000 |
commit | 612163e3833e807caeed8889dae41d24026241e7 (patch) | |
tree | e0a711474dd3f82eaf43954dc6074ce6857d9be7 /src/northbridge/via/vx800/vga.c | |
parent | e6e899dde951823ebc9abf997a6af06debac82a3 (diff) |
Here's the VIA vx800 patch from OLPC.
It's untested, but a good starting point for everyone.
Signed-off-by: Bari Ari <bari@onelabs.com>
Acked-by: Ronald G. Minnich <rminnich@gmail.com>
Acked-by: Uwe Hermann <uwe@hermann-uwe.de>
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@4313 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
Diffstat (limited to 'src/northbridge/via/vx800/vga.c')
-rw-r--r-- | src/northbridge/via/vx800/vga.c | 148 |
1 files changed, 148 insertions, 0 deletions
diff --git a/src/northbridge/via/vx800/vga.c b/src/northbridge/via/vx800/vga.c new file mode 100644 index 0000000000..03680786e5 --- /dev/null +++ b/src/northbridge/via/vx800/vga.c @@ -0,0 +1,148 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2009 One Laptop per Child, Association, 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 + */ + +/* Note: Some of the VGA control registers are located on the memory controller. + Registers are set both in raminit.c and northbridge.c */ + +#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 <stdlib.h> +#include <string.h> +#include <bitops.h> +#include <cpu/cpu.h> +#include <cpu/x86/mtrr.h> +#include <cpu/x86/msr.h> +#include "chip.h" +#include "northbridge.h" +#include "vgachip.h" + +/* PCI Domain 1 Device 0 Function 0 */ + +#define SR_INDEX 0x3c4 +#define SR_DATA 0x3c5 +#define CRTM_INDEX 0x3b4 +#define CRTM_DATA 0x3b5 +#define CRTC_INDEX 0x3d4 +#define CRTC_DATA 0x3d5 + +void write_protect_vgabios(void) +{ + device_t dev; + + printk_info("write_protect_vgabios\n"); + /* there are two possible devices. Just do both. */ + dev = + dev_find_device(PCI_VENDOR_ID_VIA, + PCI_DEVICE_ID_VIA_VX855_MEMCTRL, 0); + if (dev) + pci_write_config8(dev, 0x80, 0xff); + /*vx855 no th 0x61 reg */ + /*dev = dev_find_device(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_VX855_NB_VLINK, 0); + //if(dev) + // pci_write_config8(dev, 0x61, 0xff); */ +} + +extern u8 acpi_sleep_type; +static void vga_init(device_t dev) +{ + uint8_t reg8; + + print_debug("Initiailizing VGA...\n"); + u8 tmp8; +//A20 OPEN + tmp8 = inb(0x92); + tmp8 = tmp8 | 2; + outb(tmp8, 0x92); + + //* + //pci_write_config8(dev, 0x04, 0x07); + //pci_write_config32(dev,0x10, 0xa0000008); + //pci_write_config32(dev,0x14, 0xdd000000); + pci_write_config32(dev, 0x10, VIACONFIG_VGA_PCI_10); + pci_write_config32(dev, 0x14, VIACONFIG_VGA_PCI_14); + pci_write_config8(dev, 0x3c, 0x0a); //same with vx855_lpc.c + //*/ + printk_emerg("file '%s', line %d\n\n", __FILE__, __LINE__); + + +#if 1 + printk_debug("INSTALL REAL-MODE IDT\n"); + setup_realmode_idt(); + printk_debug("DO THE VGA BIOS\n"); + + do_vgabios(); + if ((acpi_sleep_type == 3) || (PAYLOAD_IS_SEABIOS == 0)) { + printk_debug("Enable VGA console\n"); + // remove this function since in cn700 it is said "VGA seems to work without this, but crash & burn with it" + //but the existense of vga_enable_console() seems do not hurt my coreboot. XP+ubuntu s3 can resume with and without this function. + //and remove it also do not help my s3 problem: desktop screen have some thin black line, after resuming back to win. + vga_enable_console(); + } +#else +/* Attempt to manually force the rom to load */ + printk_debug("Forcing rom load\r\n"); + pci_rom_load(dev, 0xfff80000); + run_bios(dev, 0xc0000); +#endif + if ((acpi_sleep_type == 3) || (PAYLOAD_IS_SEABIOS == 0)) { + /* It's not clear if these need to be programmed before or after + * the VGA bios runs. Try both, clean up later */ + /* Set memory rate to 200MHz */ + outb(0x3d, CRTM_INDEX); + reg8 = inb(CRTM_DATA); + reg8 &= 0x0f; + reg8 |= (0x3 << 4); + outb(0x3d, CRTM_INDEX); + outb(reg8, CRTM_DATA); + + /* Set framebuffer size to CONFIG_VIDEO_MB mb */ + /*reg8 = (CONFIG_VIDEO_MB/4); + outb(0x39, SR_INDEX); + outb(reg8, SR_DATA); */ + } + printk_emerg("file '%s', line %d\n\n", __FILE__, __LINE__); + +} + +static void vga_read_resources(device_t dev) +{ + dev->rom_address = (void *) (0xffffffff - FULL_ROM_SIZE + 1); + dev->on_mainboard = 1; + pci_dev_read_resources(dev); +} + + +static struct device_operations vga_operations = { + .read_resources = vga_read_resources, + .set_resources = pci_dev_set_resources, + .enable_resources = pci_dev_enable_resources, + .init = vga_init, + .ops_pci = 0, +}; + + +static const struct pci_driver vga_driver __pci_driver = { + .ops = &vga_operations, + .vendor = PCI_VENDOR_ID_VIA, + .device = PCI_DEVICE_ID_VIA_VX855_VGA, +}; |