/* * This file is part of the coreboot project. * * Copyright (C) 2007-2009 Luc Verhaegen <libv@skynet.be> * * 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. */ #include <console/console.h> #include <device/device.h> #include <device/pci.h> #include <device/pci_ids.h> #include <string.h> /* for memset */ #include "k8x8xx.h" #if CONFIG_VGA #include <pc80/vga_io.h> #include <pc80/vga.h> #include <arch/io.h> /* * */ static void chrome_vga_init(struct device *dev) { vga_sr_write(0x10, 0x01); /* unlock extended regs */ vga_sr_mask(0x1A, 0x02, 0x02); /* enable mmio */ vga_sr_mask(0x1A, 0x40, 0x40); /* Software Reset */ vga_cr_mask(0x6A, 0x00, 0xC8); /* Disable CRTC2 & Simultaneous */ /* Make sure that non of the primary VGA overflow registers are set */ vga_cr_write(0x33, 0x00); vga_cr_write(0x35, 0x00); vga_cr_mask(0x11, 0x00, 0x30); vga_sr_mask(0x16, 0x00, 0x40); /* Wire CRT to CRTC1 */ vga_cr_mask(0x36, 0x00, 0x30); /* Power on CRT */ /* Disable Extended Display Mode */ vga_sr_mask(0x15, 0x00, 0x02); /* Disable Wrap-around */ vga_sr_mask(0x15, 0x00, 0x20); /* Disable Extended Mode memory access */ vga_sr_mask(0x1A, 0x00, 0x08); /* Make sure that we only touch CRTC1s DAC */ vga_sr_mask(0x1A, 0x00, 0x01); /* Set up power to the clocks/crtcs */ vga_sr_mask(0x19, 0x7F, 0x7F); /* enable clock gating for all. */ vga_sr_mask(0x1B, 0xC0, 0xC0); /* secondary clock according to pm */ vga_sr_mask(0x1B, 0x20, 0x30); /* primary clock is always on */ /* set everything according to PM/Engine idle state except pci dma */ vga_sr_write(0x2D, 0xFF); /* Power management control 1 */ vga_sr_write(0x2E, 0xFB); /* Power management control 2 */ vga_sr_write(0x3F, 0xFF); /* Power management control 3 */ /* now set up the engine clock. */ vga_sr_write(0x47, 0xB8); vga_sr_write(0x48, 0x08); vga_sr_write(0x49, 0x03); /* trigger engine clock setting */ vga_sr_mask(0x40, 0x01, 0x01); vga_sr_mask(0x40, 0, 0x01); vga_cr_mask(0x30, 0x04, 0x04); /* Enable PowerNow in primary path */ vga_cr_mask(0x36, 0x01, 0x01); /* Enable PCI Power Management */ /* Power now indicators... */ vga_cr_write(0x41, 0xB9); vga_cr_write(0x42, 0xB4); /* could these be the CRTC2 power now indicators? */ vga_cr_write(0x9D, 0x80); /* Power Now Ending position enable */ vga_cr_write(0x9E, 0xB4); /* Power Now Control 3 */ /* primary fifo setting */ vga_sr_mask(0x16, 0x28, 0xBF); /* pthreshold: 160 */ vga_sr_write(0x17, 0x60); /* max depth: 194 */ vga_sr_mask(0x18, 0x0E, 0xBF); /* high priority threshold: 56 */ vga_sr_write(0x1C, 0x54); /* Fetch count */ vga_sr_write(0x20, 0x40); /* display queue typical arbiter control 0 */ vga_sr_write(0x21, 0x40); /* display queue typical arbiter control 1 */ vga_sr_mask(0x22, 0x14, 0x1F); /* display queue expire number */ /* Typical Arbiter Control */ vga_sr_mask(0x41, 0x40, 0xF0); /* Request threshold */ vga_sr_mask(0x42, 0x20, 0x20); /* Support Fetch Cycle with Length 2 */ vga_sr_write(0x50, 0x1F); /* AGP Control Register */ vga_sr_write(0x51, 0xF5); /* AGP FIFO Control 1 */ vga_cr_mask(0x33, 0x08, 0x08); /* Enable Prefetch Mode */ } #endif /* CONFIG_VGA */ /* * */ static void chrome_init(struct device *dev) { uint32_t fb_size, fb_address; fb_size = k8m890_host_fb_size_get(); if (!fb_size) { printk(BIOS_WARNING, "Chrome: Device has not been initialised in the" " ramcontroller!\n"); return; } fb_address = pci_read_config32(dev, 0x10); fb_address &= ~0x0F; if (!fb_address) { printk(BIOS_WARNING, "Chrome: No FB BAR assigned!\n"); return; } printk(BIOS_INFO, "Chrome: Using %dMB Framebuffer at 0x%08X.\n", fb_size, fb_address); //k8m890_host_fb_direct_set(fb_address); #if CONFIG_VGA /* Now set up the VGA console */ vga_io_init(); /* Enable full IO access */ chrome_vga_init(dev); vga_textmode_init(); printk(BIOS_INFO, "Chrome VGA Textmode initialized.\n"); /* if we don't have console, at least print something... */ vga_line_write(0, "Chrome VGA Textmode initialized."); #endif /* CONFIG_VGA */ } static struct device_operations chrome_ops = { .read_resources = pci_dev_read_resources, .set_resources = pci_dev_set_resources, .enable_resources = pci_dev_enable_resources, .init = chrome_init, .scan_bus = 0, .enable = 0, }; static const struct pci_driver unichrome_driver_800 __pci_driver = { .ops = &chrome_ops, .vendor = PCI_VENDOR_ID_VIA, .device = PCI_DEVICE_ID_VIA_K8M800_CHROME, }; static const struct pci_driver unichrome_driver_890 __pci_driver = { .ops = &chrome_ops, .vendor = PCI_VENDOR_ID_VIA, .device = PCI_DEVICE_ID_VIA_K8M890_CHROME, };