Martin Roth | e20f3d0 | 2017-04-04 14:26:57 -0600 | [diff] [blame^] | 1 | /* |
| 2 | * This file is part of the coreboot project. |
| 3 | * |
| 4 | * This program is free software; you can redistribute it and/or modify |
| 5 | * it under the terms of the GNU General Public License as published by |
| 6 | * the Free Software Foundation; version 2 of the License. |
| 7 | * |
| 8 | * This program is distributed in the hope that it will be useful, |
| 9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 11 | * GNU General Public License for more details. |
| 12 | */ |
| 13 | |
Ronald G. Minnich | cae09e0 | 2013-11-19 17:42:41 -0800 | [diff] [blame] | 14 | #include <stdint.h> |
Gerd Hoffmann | 414b947 | 2013-06-18 23:41:21 +0200 | [diff] [blame] | 15 | #include <delay.h> |
Ronald G. Minnich | cae09e0 | 2013-11-19 17:42:41 -0800 | [diff] [blame] | 16 | #include <edid.h> |
Gerd Hoffmann | 414b947 | 2013-06-18 23:41:21 +0200 | [diff] [blame] | 17 | #include <stdlib.h> |
| 18 | #include <string.h> |
| 19 | #include <arch/io.h> |
| 20 | |
| 21 | #include <boot/coreboot_tables.h> |
| 22 | #include <console/console.h> |
| 23 | #include <device/device.h> |
| 24 | #include <device/pci.h> |
| 25 | #include <device/pci_ids.h> |
| 26 | #include <device/pci_ops.h> |
Vladimir Serbinenko | db7d04d | 2014-02-22 10:35:45 +0100 | [diff] [blame] | 27 | #include <pc80/vga.h> |
| 28 | #include <pc80/vga_io.h> |
Gerd Hoffmann | 414b947 | 2013-06-18 23:41:21 +0200 | [diff] [blame] | 29 | |
| 30 | /* VGA init. We use the Bochs VESA VBE extensions */ |
| 31 | #define VBE_DISPI_IOPORT_INDEX 0x01CE |
| 32 | #define VBE_DISPI_IOPORT_DATA 0x01CF |
| 33 | |
| 34 | #define VBE_DISPI_INDEX_ID 0x0 |
| 35 | #define VBE_DISPI_INDEX_XRES 0x1 |
| 36 | #define VBE_DISPI_INDEX_YRES 0x2 |
| 37 | #define VBE_DISPI_INDEX_BPP 0x3 |
| 38 | #define VBE_DISPI_INDEX_ENABLE 0x4 |
| 39 | #define VBE_DISPI_INDEX_BANK 0x5 |
| 40 | #define VBE_DISPI_INDEX_VIRT_WIDTH 0x6 |
| 41 | #define VBE_DISPI_INDEX_VIRT_HEIGHT 0x7 |
| 42 | #define VBE_DISPI_INDEX_X_OFFSET 0x8 |
| 43 | #define VBE_DISPI_INDEX_Y_OFFSET 0x9 |
| 44 | #define VBE_DISPI_INDEX_VIDEO_MEMORY_64K 0xa |
| 45 | |
| 46 | #define VBE_DISPI_ID0 0xB0C0 |
| 47 | #define VBE_DISPI_ID1 0xB0C1 |
| 48 | #define VBE_DISPI_ID2 0xB0C2 |
| 49 | #define VBE_DISPI_ID4 0xB0C4 |
| 50 | #define VBE_DISPI_ID5 0xB0C5 |
| 51 | |
| 52 | #define VBE_DISPI_DISABLED 0x00 |
| 53 | #define VBE_DISPI_ENABLED 0x01 |
| 54 | #define VBE_DISPI_LFB_ENABLED 0x40 |
| 55 | #define VBE_DISPI_NOCLEARMEM 0x80 |
| 56 | |
| 57 | static int width = CONFIG_DRIVERS_EMULATION_QEMU_BOCHS_XRES; |
| 58 | static int height = CONFIG_DRIVERS_EMULATION_QEMU_BOCHS_YRES; |
Gerd Hoffmann | 414b947 | 2013-06-18 23:41:21 +0200 | [diff] [blame] | 59 | |
| 60 | static void bochs_write(int index, int val) |
| 61 | { |
| 62 | outw(index, VBE_DISPI_IOPORT_INDEX); |
| 63 | outw(val, VBE_DISPI_IOPORT_DATA); |
| 64 | } |
| 65 | |
| 66 | static int bochs_read(int index) |
| 67 | { |
| 68 | outw(index, VBE_DISPI_IOPORT_INDEX); |
| 69 | return inw(VBE_DISPI_IOPORT_DATA); |
| 70 | } |
| 71 | |
Nico Huber | 6d8266b | 2017-05-20 16:46:01 +0200 | [diff] [blame] | 72 | static void bochs_init_linear_fb(struct device *dev) |
Gerd Hoffmann | 414b947 | 2013-06-18 23:41:21 +0200 | [diff] [blame] | 73 | { |
Gerd Hoffmann | 748a6b1 | 2013-11-25 17:12:07 +0100 | [diff] [blame] | 74 | struct edid edid; |
Gerd Hoffmann | 414b947 | 2013-06-18 23:41:21 +0200 | [diff] [blame] | 75 | int id, mem, bar; |
Gerd Hoffmann | 748a6b1 | 2013-11-25 17:12:07 +0100 | [diff] [blame] | 76 | u32 addr; |
Gerd Hoffmann | 414b947 | 2013-06-18 23:41:21 +0200 | [diff] [blame] | 77 | |
| 78 | /* bochs dispi detection */ |
| 79 | id = bochs_read(VBE_DISPI_INDEX_ID); |
| 80 | if ((id & 0xfff0) != VBE_DISPI_ID0) { |
| 81 | printk(BIOS_DEBUG, "QEMU VGA: bochs dispi: ID mismatch.\n"); |
| 82 | return; |
| 83 | } |
| 84 | mem = bochs_read(VBE_DISPI_INDEX_VIDEO_MEMORY_64K) * 64 * 1024; |
Gerd Hoffmann | 414b947 | 2013-06-18 23:41:21 +0200 | [diff] [blame] | 85 | |
| 86 | /* find lfb pci bar */ |
| 87 | addr = pci_read_config32(dev, PCI_BASE_ADDRESS_0); |
| 88 | if ((addr & PCI_BASE_ADDRESS_SPACE) == PCI_BASE_ADDRESS_SPACE_MEMORY) { |
| 89 | /* qemu -vga {std,qxl} */ |
| 90 | bar = 0; |
| 91 | } else { |
| 92 | /* qemu -vga vmware */ |
| 93 | addr = pci_read_config32(dev, PCI_BASE_ADDRESS_1); |
| 94 | bar = 1; |
| 95 | } |
| 96 | addr &= ~PCI_BASE_ADDRESS_MEM_ATTR_MASK; |
Ronald G. Minnich | cae09e0 | 2013-11-19 17:42:41 -0800 | [diff] [blame] | 97 | |
| 98 | if (!addr) |
| 99 | return; |
| 100 | |
| 101 | printk(BIOS_DEBUG, "QEMU VGA: bochs dispi interface found, " |
| 102 | "%d MiB video memory\n", mem / ( 1024 * 1024)); |
Gerd Hoffmann | 414b947 | 2013-06-18 23:41:21 +0200 | [diff] [blame] | 103 | printk(BIOS_DEBUG, "QEMU VGA: framebuffer @ %x (pci bar %d)\n", |
| 104 | addr, bar); |
| 105 | |
| 106 | /* setup video mode */ |
| 107 | bochs_write(VBE_DISPI_INDEX_ENABLE, 0); |
| 108 | bochs_write(VBE_DISPI_INDEX_BANK, 0); |
| 109 | bochs_write(VBE_DISPI_INDEX_BPP, 32); |
| 110 | bochs_write(VBE_DISPI_INDEX_XRES, width); |
| 111 | bochs_write(VBE_DISPI_INDEX_YRES, height); |
| 112 | bochs_write(VBE_DISPI_INDEX_VIRT_WIDTH, width); |
| 113 | bochs_write(VBE_DISPI_INDEX_VIRT_HEIGHT, height); |
| 114 | bochs_write(VBE_DISPI_INDEX_X_OFFSET, 0); |
| 115 | bochs_write(VBE_DISPI_INDEX_Y_OFFSET, 0); |
| 116 | bochs_write(VBE_DISPI_INDEX_ENABLE, |
| 117 | VBE_DISPI_ENABLED | VBE_DISPI_LFB_ENABLED); |
| 118 | |
| 119 | outb(0x20, 0x3c0); /* disable blanking */ |
Gerd Hoffmann | 748a6b1 | 2013-11-25 17:12:07 +0100 | [diff] [blame] | 120 | |
| 121 | /* setup coreboot framebuffer */ |
Gerd Hoffmann | 0bc3e325 | 2015-09-04 12:58:00 +0200 | [diff] [blame] | 122 | edid.mode.ha = width; |
| 123 | edid.mode.va = height; |
Gerd Hoffmann | 4f62732 | 2014-08-27 10:42:47 +0200 | [diff] [blame] | 124 | edid.panel_bits_per_color = 8; |
| 125 | edid.panel_bits_per_pixel = 24; |
Julius Werner | 2b6db97 | 2016-04-06 12:50:40 -0700 | [diff] [blame] | 126 | edid_set_framebuffer_bits_per_pixel(&edid, 32, 0); |
Ronald G. Minnich | cae09e0 | 2013-11-19 17:42:41 -0800 | [diff] [blame] | 127 | set_vbe_mode_info_valid(&edid, addr); |
Nico Huber | 6d8266b | 2017-05-20 16:46:01 +0200 | [diff] [blame] | 128 | } |
| 129 | |
| 130 | static void bochs_init_text_mode(struct device *dev) |
| 131 | { |
Vladimir Serbinenko | db7d04d | 2014-02-22 10:35:45 +0100 | [diff] [blame] | 132 | vga_misc_write(0x1); |
| 133 | vga_textmode_init(); |
Nico Huber | 6d8266b | 2017-05-20 16:46:01 +0200 | [diff] [blame] | 134 | } |
| 135 | |
| 136 | static void bochs_init(struct device *dev) |
| 137 | { |
| 138 | if (IS_ENABLED(CONFIG_LINEAR_FRAMEBUFFER)) |
| 139 | bochs_init_linear_fb(dev); |
| 140 | else if (IS_ENABLED(CONFIG_VGA_TEXT_FRAMEBUFFER)) |
| 141 | bochs_init_text_mode(dev); |
Gerd Hoffmann | 414b947 | 2013-06-18 23:41:21 +0200 | [diff] [blame] | 142 | } |
| 143 | |
| 144 | static struct device_operations qemu_graph_ops = { |
| 145 | .read_resources = pci_dev_read_resources, |
| 146 | .set_resources = pci_dev_set_resources, |
| 147 | .enable_resources = pci_dev_enable_resources, |
| 148 | .init = bochs_init, |
| 149 | .scan_bus = 0, |
| 150 | }; |
| 151 | |
| 152 | static const struct pci_driver qemu_stdvga_driver __pci_driver = { |
| 153 | .ops = &qemu_graph_ops, |
| 154 | .vendor = 0x1234, |
| 155 | .device = 0x1111, |
| 156 | }; |
| 157 | |
| 158 | static const struct pci_driver qemu_vmware_driver __pci_driver = { |
| 159 | .ops = &qemu_graph_ops, |
| 160 | .vendor = 0x15ad, |
| 161 | .device = 0x0405, |
| 162 | }; |
| 163 | static const struct pci_driver qemu_qxl_driver __pci_driver = { |
| 164 | .ops = &qemu_graph_ops, |
| 165 | .vendor = 0x1b36, |
| 166 | .device = 0x0100, |
| 167 | }; |