David Herrmann | 2995e50 | 2013-08-02 14:05:23 +0200 | [diff] [blame] | 1 | /* |
| 2 | * Generic System Framebuffers on x86 |
| 3 | * Copyright (c) 2012-2013 David Herrmann <dh.herrmann@gmail.com> |
| 4 | * |
| 5 | * EFI Quirks Copyright (c) 2006 Edgar Hucek <gimli@dark-green.com> |
| 6 | * |
| 7 | * This program is free software; you can redistribute it and/or modify it |
| 8 | * under the terms of the GNU General Public License as published by the Free |
| 9 | * Software Foundation; either version 2 of the License, or (at your option) |
| 10 | * any later version. |
| 11 | */ |
| 12 | |
| 13 | /* |
| 14 | * EFI Quirks |
| 15 | * Several EFI systems do not correctly advertise their boot framebuffers. |
| 16 | * Hence, we use this static table of known broken machines and fix up the |
| 17 | * information so framebuffer drivers can load corectly. |
| 18 | */ |
| 19 | |
| 20 | #include <linux/dmi.h> |
| 21 | #include <linux/err.h> |
| 22 | #include <linux/init.h> |
| 23 | #include <linux/kernel.h> |
| 24 | #include <linux/mm.h> |
| 25 | #include <linux/pci.h> |
| 26 | #include <linux/screen_info.h> |
| 27 | #include <video/vga.h> |
| 28 | #include <asm/sysfb.h> |
| 29 | |
| 30 | enum { |
| 31 | OVERRIDE_NONE = 0x0, |
| 32 | OVERRIDE_BASE = 0x1, |
| 33 | OVERRIDE_STRIDE = 0x2, |
| 34 | OVERRIDE_HEIGHT = 0x4, |
| 35 | OVERRIDE_WIDTH = 0x8, |
| 36 | }; |
| 37 | |
| 38 | struct efifb_dmi_info efifb_dmi_list[] = { |
| 39 | [M_I17] = { "i17", 0x80010000, 1472 * 4, 1440, 900, OVERRIDE_NONE }, |
| 40 | [M_I20] = { "i20", 0x80010000, 1728 * 4, 1680, 1050, OVERRIDE_NONE }, /* guess */ |
| 41 | [M_I20_SR] = { "imac7", 0x40010000, 1728 * 4, 1680, 1050, OVERRIDE_NONE }, |
| 42 | [M_I24] = { "i24", 0x80010000, 2048 * 4, 1920, 1200, OVERRIDE_NONE }, /* guess */ |
| 43 | [M_I24_8_1] = { "imac8", 0xc0060000, 2048 * 4, 1920, 1200, OVERRIDE_NONE }, |
| 44 | [M_I24_10_1] = { "imac10", 0xc0010000, 2048 * 4, 1920, 1080, OVERRIDE_NONE }, |
| 45 | [M_I27_11_1] = { "imac11", 0xc0010000, 2560 * 4, 2560, 1440, OVERRIDE_NONE }, |
| 46 | [M_MINI]= { "mini", 0x80000000, 2048 * 4, 1024, 768, OVERRIDE_NONE }, |
| 47 | [M_MINI_3_1] = { "mini31", 0x40010000, 1024 * 4, 1024, 768, OVERRIDE_NONE }, |
| 48 | [M_MINI_4_1] = { "mini41", 0xc0010000, 2048 * 4, 1920, 1200, OVERRIDE_NONE }, |
| 49 | [M_MB] = { "macbook", 0x80000000, 2048 * 4, 1280, 800, OVERRIDE_NONE }, |
| 50 | [M_MB_5_1] = { "macbook51", 0x80010000, 2048 * 4, 1280, 800, OVERRIDE_NONE }, |
| 51 | [M_MB_6_1] = { "macbook61", 0x80010000, 2048 * 4, 1280, 800, OVERRIDE_NONE }, |
| 52 | [M_MB_7_1] = { "macbook71", 0x80010000, 2048 * 4, 1280, 800, OVERRIDE_NONE }, |
| 53 | [M_MBA] = { "mba", 0x80000000, 2048 * 4, 1280, 800, OVERRIDE_NONE }, |
| 54 | /* 11" Macbook Air 3,1 passes the wrong stride */ |
| 55 | [M_MBA_3] = { "mba3", 0, 2048 * 4, 0, 0, OVERRIDE_STRIDE }, |
| 56 | [M_MBP] = { "mbp", 0x80010000, 1472 * 4, 1440, 900, OVERRIDE_NONE }, |
| 57 | [M_MBP_2] = { "mbp2", 0, 0, 0, 0, OVERRIDE_NONE }, /* placeholder */ |
| 58 | [M_MBP_2_2] = { "mbp22", 0x80010000, 1472 * 4, 1440, 900, OVERRIDE_NONE }, |
| 59 | [M_MBP_SR] = { "mbp3", 0x80030000, 2048 * 4, 1440, 900, OVERRIDE_NONE }, |
| 60 | [M_MBP_4] = { "mbp4", 0xc0060000, 2048 * 4, 1920, 1200, OVERRIDE_NONE }, |
| 61 | [M_MBP_5_1] = { "mbp51", 0xc0010000, 2048 * 4, 1440, 900, OVERRIDE_NONE }, |
| 62 | [M_MBP_5_2] = { "mbp52", 0xc0010000, 2048 * 4, 1920, 1200, OVERRIDE_NONE }, |
| 63 | [M_MBP_5_3] = { "mbp53", 0xd0010000, 2048 * 4, 1440, 900, OVERRIDE_NONE }, |
| 64 | [M_MBP_6_1] = { "mbp61", 0x90030000, 2048 * 4, 1920, 1200, OVERRIDE_NONE }, |
| 65 | [M_MBP_6_2] = { "mbp62", 0x90030000, 2048 * 4, 1680, 1050, OVERRIDE_NONE }, |
| 66 | [M_MBP_7_1] = { "mbp71", 0xc0010000, 2048 * 4, 1280, 800, OVERRIDE_NONE }, |
| 67 | [M_MBP_8_2] = { "mbp82", 0x90010000, 1472 * 4, 1440, 900, OVERRIDE_NONE }, |
| 68 | [M_UNKNOWN] = { NULL, 0, 0, 0, 0, OVERRIDE_NONE } |
| 69 | }; |
| 70 | |
| 71 | #define choose_value(dmivalue, fwvalue, field, flags) ({ \ |
| 72 | typeof(fwvalue) _ret_ = fwvalue; \ |
| 73 | if ((flags) & (field)) \ |
| 74 | _ret_ = dmivalue; \ |
| 75 | else if ((fwvalue) == 0) \ |
| 76 | _ret_ = dmivalue; \ |
| 77 | _ret_; \ |
| 78 | }) |
| 79 | |
| 80 | static int __init efifb_set_system(const struct dmi_system_id *id) |
| 81 | { |
| 82 | struct efifb_dmi_info *info = id->driver_data; |
| 83 | |
| 84 | if (info->base == 0 && info->height == 0 && info->width == 0 && |
| 85 | info->stride == 0) |
| 86 | return 0; |
| 87 | |
| 88 | /* Trust the bootloader over the DMI tables */ |
| 89 | if (screen_info.lfb_base == 0) { |
| 90 | #if defined(CONFIG_PCI) |
| 91 | struct pci_dev *dev = NULL; |
| 92 | int found_bar = 0; |
| 93 | #endif |
| 94 | if (info->base) { |
| 95 | screen_info.lfb_base = choose_value(info->base, |
| 96 | screen_info.lfb_base, OVERRIDE_BASE, |
| 97 | info->flags); |
| 98 | |
| 99 | #if defined(CONFIG_PCI) |
| 100 | /* make sure that the address in the table is actually |
| 101 | * on a VGA device's PCI BAR */ |
| 102 | |
| 103 | for_each_pci_dev(dev) { |
| 104 | int i; |
| 105 | if ((dev->class >> 8) != PCI_CLASS_DISPLAY_VGA) |
| 106 | continue; |
| 107 | for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) { |
| 108 | resource_size_t start, end; |
| 109 | |
| 110 | start = pci_resource_start(dev, i); |
| 111 | if (start == 0) |
| 112 | break; |
| 113 | end = pci_resource_end(dev, i); |
| 114 | if (screen_info.lfb_base >= start && |
| 115 | screen_info.lfb_base < end) { |
| 116 | found_bar = 1; |
| 117 | } |
| 118 | } |
| 119 | } |
| 120 | if (!found_bar) |
| 121 | screen_info.lfb_base = 0; |
| 122 | #endif |
| 123 | } |
| 124 | } |
| 125 | if (screen_info.lfb_base) { |
| 126 | screen_info.lfb_linelength = choose_value(info->stride, |
| 127 | screen_info.lfb_linelength, OVERRIDE_STRIDE, |
| 128 | info->flags); |
| 129 | screen_info.lfb_width = choose_value(info->width, |
| 130 | screen_info.lfb_width, OVERRIDE_WIDTH, |
| 131 | info->flags); |
| 132 | screen_info.lfb_height = choose_value(info->height, |
| 133 | screen_info.lfb_height, OVERRIDE_HEIGHT, |
| 134 | info->flags); |
| 135 | if (screen_info.orig_video_isVGA == 0) |
| 136 | screen_info.orig_video_isVGA = VIDEO_TYPE_EFI; |
| 137 | } else { |
| 138 | screen_info.lfb_linelength = 0; |
| 139 | screen_info.lfb_width = 0; |
| 140 | screen_info.lfb_height = 0; |
| 141 | screen_info.orig_video_isVGA = 0; |
| 142 | return 0; |
| 143 | } |
| 144 | |
| 145 | printk(KERN_INFO "efifb: dmi detected %s - framebuffer at 0x%08x " |
| 146 | "(%dx%d, stride %d)\n", id->ident, |
| 147 | screen_info.lfb_base, screen_info.lfb_width, |
| 148 | screen_info.lfb_height, screen_info.lfb_linelength); |
| 149 | |
| 150 | return 1; |
| 151 | } |
| 152 | |
| 153 | #define EFIFB_DMI_SYSTEM_ID(vendor, name, enumid) \ |
| 154 | { \ |
| 155 | efifb_set_system, \ |
| 156 | name, \ |
| 157 | { \ |
| 158 | DMI_MATCH(DMI_BIOS_VENDOR, vendor), \ |
| 159 | DMI_MATCH(DMI_PRODUCT_NAME, name) \ |
| 160 | }, \ |
| 161 | &efifb_dmi_list[enumid] \ |
| 162 | } |
| 163 | |
| 164 | static const struct dmi_system_id efifb_dmi_system_table[] __initconst = { |
| 165 | EFIFB_DMI_SYSTEM_ID("Apple Computer, Inc.", "iMac4,1", M_I17), |
| 166 | /* At least one of these two will be right; maybe both? */ |
| 167 | EFIFB_DMI_SYSTEM_ID("Apple Computer, Inc.", "iMac5,1", M_I20), |
| 168 | EFIFB_DMI_SYSTEM_ID("Apple Inc.", "iMac5,1", M_I20), |
| 169 | /* At least one of these two will be right; maybe both? */ |
| 170 | EFIFB_DMI_SYSTEM_ID("Apple Computer, Inc.", "iMac6,1", M_I24), |
| 171 | EFIFB_DMI_SYSTEM_ID("Apple Inc.", "iMac6,1", M_I24), |
| 172 | EFIFB_DMI_SYSTEM_ID("Apple Inc.", "iMac7,1", M_I20_SR), |
| 173 | EFIFB_DMI_SYSTEM_ID("Apple Inc.", "iMac8,1", M_I24_8_1), |
| 174 | EFIFB_DMI_SYSTEM_ID("Apple Inc.", "iMac10,1", M_I24_10_1), |
| 175 | EFIFB_DMI_SYSTEM_ID("Apple Inc.", "iMac11,1", M_I27_11_1), |
| 176 | EFIFB_DMI_SYSTEM_ID("Apple Computer, Inc.", "Macmini1,1", M_MINI), |
| 177 | EFIFB_DMI_SYSTEM_ID("Apple Inc.", "Macmini3,1", M_MINI_3_1), |
| 178 | EFIFB_DMI_SYSTEM_ID("Apple Inc.", "Macmini4,1", M_MINI_4_1), |
| 179 | EFIFB_DMI_SYSTEM_ID("Apple Computer, Inc.", "MacBook1,1", M_MB), |
| 180 | /* At least one of these two will be right; maybe both? */ |
| 181 | EFIFB_DMI_SYSTEM_ID("Apple Computer, Inc.", "MacBook2,1", M_MB), |
| 182 | EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBook2,1", M_MB), |
| 183 | /* At least one of these two will be right; maybe both? */ |
| 184 | EFIFB_DMI_SYSTEM_ID("Apple Computer, Inc.", "MacBook3,1", M_MB), |
| 185 | EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBook3,1", M_MB), |
| 186 | EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBook4,1", M_MB), |
| 187 | EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBook5,1", M_MB_5_1), |
| 188 | EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBook6,1", M_MB_6_1), |
| 189 | EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBook7,1", M_MB_7_1), |
| 190 | EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBookAir1,1", M_MBA), |
| 191 | EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBookAir3,1", M_MBA_3), |
| 192 | EFIFB_DMI_SYSTEM_ID("Apple Computer, Inc.", "MacBookPro1,1", M_MBP), |
| 193 | EFIFB_DMI_SYSTEM_ID("Apple Computer, Inc.", "MacBookPro2,1", M_MBP_2), |
| 194 | EFIFB_DMI_SYSTEM_ID("Apple Computer, Inc.", "MacBookPro2,2", M_MBP_2_2), |
| 195 | EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBookPro2,1", M_MBP_2), |
| 196 | EFIFB_DMI_SYSTEM_ID("Apple Computer, Inc.", "MacBookPro3,1", M_MBP_SR), |
| 197 | EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBookPro3,1", M_MBP_SR), |
| 198 | EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBookPro4,1", M_MBP_4), |
| 199 | EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBookPro5,1", M_MBP_5_1), |
| 200 | EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBookPro5,2", M_MBP_5_2), |
| 201 | EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBookPro5,3", M_MBP_5_3), |
| 202 | EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBookPro6,1", M_MBP_6_1), |
| 203 | EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBookPro6,2", M_MBP_6_2), |
| 204 | EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBookPro7,1", M_MBP_7_1), |
| 205 | EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBookPro8,2", M_MBP_8_2), |
| 206 | {}, |
| 207 | }; |
| 208 | |
| 209 | __init void sysfb_apply_efi_quirks(void) |
| 210 | { |
| 211 | if (screen_info.orig_video_isVGA != VIDEO_TYPE_EFI || |
| 212 | !(screen_info.capabilities & VIDEO_CAPABILITY_SKIP_QUIRKS)) |
| 213 | dmi_check_system(efifb_dmi_system_table); |
| 214 | } |