| /* |
| * 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. |
| * |
| * 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 <string.h> /* for memset */ |
| #include "k8t890.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 __pci_driver = { |
| .ops = &chrome_ops, |
| .vendor = 0x1106, |
| .device = 0x3230, |
| }; |