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2874c5fd | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
2995e506 DH |
2 | /* |
3 | * Generic System Framebuffers on x86 | |
4 | * Copyright (c) 2012-2013 David Herrmann <dh.herrmann@gmail.com> | |
5 | * | |
6 | * EFI Quirks Copyright (c) 2006 Edgar Hucek <gimli@dark-green.com> | |
2995e506 DH |
7 | */ |
8 | ||
9 | /* | |
10 | * EFI Quirks | |
11 | * Several EFI systems do not correctly advertise their boot framebuffers. | |
12 | * Hence, we use this static table of known broken machines and fix up the | |
13 | * information so framebuffer drivers can load corectly. | |
14 | */ | |
15 | ||
16 | #include <linux/dmi.h> | |
17 | #include <linux/err.h> | |
ad3bc25a | 18 | #include <linux/efi.h> |
2995e506 DH |
19 | #include <linux/init.h> |
20 | #include <linux/kernel.h> | |
21 | #include <linux/mm.h> | |
22 | #include <linux/pci.h> | |
23 | #include <linux/screen_info.h> | |
24 | #include <video/vga.h> | |
ad3bc25a BP |
25 | |
26 | #include <asm/efi.h> | |
2995e506 DH |
27 | #include <asm/sysfb.h> |
28 | ||
29 | enum { | |
30 | OVERRIDE_NONE = 0x0, | |
31 | OVERRIDE_BASE = 0x1, | |
32 | OVERRIDE_STRIDE = 0x2, | |
33 | OVERRIDE_HEIGHT = 0x4, | |
34 | OVERRIDE_WIDTH = 0x8, | |
35 | }; | |
36 | ||
37 | struct efifb_dmi_info efifb_dmi_list[] = { | |
38 | [M_I17] = { "i17", 0x80010000, 1472 * 4, 1440, 900, OVERRIDE_NONE }, | |
39 | [M_I20] = { "i20", 0x80010000, 1728 * 4, 1680, 1050, OVERRIDE_NONE }, /* guess */ | |
40 | [M_I20_SR] = { "imac7", 0x40010000, 1728 * 4, 1680, 1050, OVERRIDE_NONE }, | |
41 | [M_I24] = { "i24", 0x80010000, 2048 * 4, 1920, 1200, OVERRIDE_NONE }, /* guess */ | |
42 | [M_I24_8_1] = { "imac8", 0xc0060000, 2048 * 4, 1920, 1200, OVERRIDE_NONE }, | |
43 | [M_I24_10_1] = { "imac10", 0xc0010000, 2048 * 4, 1920, 1080, OVERRIDE_NONE }, | |
44 | [M_I27_11_1] = { "imac11", 0xc0010000, 2560 * 4, 2560, 1440, OVERRIDE_NONE }, | |
45 | [M_MINI]= { "mini", 0x80000000, 2048 * 4, 1024, 768, OVERRIDE_NONE }, | |
46 | [M_MINI_3_1] = { "mini31", 0x40010000, 1024 * 4, 1024, 768, OVERRIDE_NONE }, | |
47 | [M_MINI_4_1] = { "mini41", 0xc0010000, 2048 * 4, 1920, 1200, OVERRIDE_NONE }, | |
48 | [M_MB] = { "macbook", 0x80000000, 2048 * 4, 1280, 800, OVERRIDE_NONE }, | |
49 | [M_MB_5_1] = { "macbook51", 0x80010000, 2048 * 4, 1280, 800, OVERRIDE_NONE }, | |
50 | [M_MB_6_1] = { "macbook61", 0x80010000, 2048 * 4, 1280, 800, OVERRIDE_NONE }, | |
51 | [M_MB_7_1] = { "macbook71", 0x80010000, 2048 * 4, 1280, 800, OVERRIDE_NONE }, | |
52 | [M_MBA] = { "mba", 0x80000000, 2048 * 4, 1280, 800, OVERRIDE_NONE }, | |
53 | /* 11" Macbook Air 3,1 passes the wrong stride */ | |
54 | [M_MBA_3] = { "mba3", 0, 2048 * 4, 0, 0, OVERRIDE_STRIDE }, | |
55 | [M_MBP] = { "mbp", 0x80010000, 1472 * 4, 1440, 900, OVERRIDE_NONE }, | |
56 | [M_MBP_2] = { "mbp2", 0, 0, 0, 0, OVERRIDE_NONE }, /* placeholder */ | |
57 | [M_MBP_2_2] = { "mbp22", 0x80010000, 1472 * 4, 1440, 900, OVERRIDE_NONE }, | |
58 | [M_MBP_SR] = { "mbp3", 0x80030000, 2048 * 4, 1440, 900, OVERRIDE_NONE }, | |
59 | [M_MBP_4] = { "mbp4", 0xc0060000, 2048 * 4, 1920, 1200, OVERRIDE_NONE }, | |
60 | [M_MBP_5_1] = { "mbp51", 0xc0010000, 2048 * 4, 1440, 900, OVERRIDE_NONE }, | |
61 | [M_MBP_5_2] = { "mbp52", 0xc0010000, 2048 * 4, 1920, 1200, OVERRIDE_NONE }, | |
62 | [M_MBP_5_3] = { "mbp53", 0xd0010000, 2048 * 4, 1440, 900, OVERRIDE_NONE }, | |
63 | [M_MBP_6_1] = { "mbp61", 0x90030000, 2048 * 4, 1920, 1200, OVERRIDE_NONE }, | |
64 | [M_MBP_6_2] = { "mbp62", 0x90030000, 2048 * 4, 1680, 1050, OVERRIDE_NONE }, | |
65 | [M_MBP_7_1] = { "mbp71", 0xc0010000, 2048 * 4, 1280, 800, OVERRIDE_NONE }, | |
66 | [M_MBP_8_2] = { "mbp82", 0x90010000, 1472 * 4, 1440, 900, OVERRIDE_NONE }, | |
67 | [M_UNKNOWN] = { NULL, 0, 0, 0, 0, OVERRIDE_NONE } | |
68 | }; | |
69 | ||
21289ec0 AB |
70 | void efifb_setup_from_dmi(struct screen_info *si, const char *opt) |
71 | { | |
72 | int i; | |
73 | ||
74 | for (i = 0; i < M_UNKNOWN; i++) { | |
75 | if (efifb_dmi_list[i].base != 0 && | |
76 | !strcmp(opt, efifb_dmi_list[i].optname)) { | |
77 | si->lfb_base = efifb_dmi_list[i].base; | |
78 | si->lfb_linelength = efifb_dmi_list[i].stride; | |
79 | si->lfb_width = efifb_dmi_list[i].width; | |
80 | si->lfb_height = efifb_dmi_list[i].height; | |
81 | } | |
82 | } | |
83 | } | |
84 | ||
2995e506 DH |
85 | #define choose_value(dmivalue, fwvalue, field, flags) ({ \ |
86 | typeof(fwvalue) _ret_ = fwvalue; \ | |
87 | if ((flags) & (field)) \ | |
88 | _ret_ = dmivalue; \ | |
89 | else if ((fwvalue) == 0) \ | |
90 | _ret_ = dmivalue; \ | |
91 | _ret_; \ | |
92 | }) | |
93 | ||
94 | static int __init efifb_set_system(const struct dmi_system_id *id) | |
95 | { | |
96 | struct efifb_dmi_info *info = id->driver_data; | |
97 | ||
98 | if (info->base == 0 && info->height == 0 && info->width == 0 && | |
99 | info->stride == 0) | |
100 | return 0; | |
101 | ||
102 | /* Trust the bootloader over the DMI tables */ | |
103 | if (screen_info.lfb_base == 0) { | |
104 | #if defined(CONFIG_PCI) | |
105 | struct pci_dev *dev = NULL; | |
106 | int found_bar = 0; | |
107 | #endif | |
108 | if (info->base) { | |
109 | screen_info.lfb_base = choose_value(info->base, | |
110 | screen_info.lfb_base, OVERRIDE_BASE, | |
111 | info->flags); | |
112 | ||
113 | #if defined(CONFIG_PCI) | |
114 | /* make sure that the address in the table is actually | |
115 | * on a VGA device's PCI BAR */ | |
116 | ||
117 | for_each_pci_dev(dev) { | |
118 | int i; | |
119 | if ((dev->class >> 8) != PCI_CLASS_DISPLAY_VGA) | |
120 | continue; | |
121 | for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) { | |
122 | resource_size_t start, end; | |
c10fcb14 WY |
123 | unsigned long flags; |
124 | ||
125 | flags = pci_resource_flags(dev, i); | |
126 | if (!(flags & IORESOURCE_MEM)) | |
127 | continue; | |
128 | ||
129 | if (flags & IORESOURCE_UNSET) | |
130 | continue; | |
131 | ||
132 | if (pci_resource_len(dev, i) == 0) | |
133 | continue; | |
2995e506 DH |
134 | |
135 | start = pci_resource_start(dev, i); | |
2995e506 DH |
136 | end = pci_resource_end(dev, i); |
137 | if (screen_info.lfb_base >= start && | |
138 | screen_info.lfb_base < end) { | |
139 | found_bar = 1; | |
c10fcb14 | 140 | break; |
2995e506 DH |
141 | } |
142 | } | |
143 | } | |
144 | if (!found_bar) | |
145 | screen_info.lfb_base = 0; | |
146 | #endif | |
147 | } | |
148 | } | |
149 | if (screen_info.lfb_base) { | |
150 | screen_info.lfb_linelength = choose_value(info->stride, | |
151 | screen_info.lfb_linelength, OVERRIDE_STRIDE, | |
152 | info->flags); | |
153 | screen_info.lfb_width = choose_value(info->width, | |
154 | screen_info.lfb_width, OVERRIDE_WIDTH, | |
155 | info->flags); | |
156 | screen_info.lfb_height = choose_value(info->height, | |
157 | screen_info.lfb_height, OVERRIDE_HEIGHT, | |
158 | info->flags); | |
159 | if (screen_info.orig_video_isVGA == 0) | |
160 | screen_info.orig_video_isVGA = VIDEO_TYPE_EFI; | |
161 | } else { | |
162 | screen_info.lfb_linelength = 0; | |
163 | screen_info.lfb_width = 0; | |
164 | screen_info.lfb_height = 0; | |
165 | screen_info.orig_video_isVGA = 0; | |
166 | return 0; | |
167 | } | |
168 | ||
169 | printk(KERN_INFO "efifb: dmi detected %s - framebuffer at 0x%08x " | |
170 | "(%dx%d, stride %d)\n", id->ident, | |
171 | screen_info.lfb_base, screen_info.lfb_width, | |
172 | screen_info.lfb_height, screen_info.lfb_linelength); | |
173 | ||
174 | return 1; | |
175 | } | |
176 | ||
177 | #define EFIFB_DMI_SYSTEM_ID(vendor, name, enumid) \ | |
178 | { \ | |
179 | efifb_set_system, \ | |
180 | name, \ | |
181 | { \ | |
182 | DMI_MATCH(DMI_BIOS_VENDOR, vendor), \ | |
183 | DMI_MATCH(DMI_PRODUCT_NAME, name) \ | |
184 | }, \ | |
185 | &efifb_dmi_list[enumid] \ | |
186 | } | |
187 | ||
188 | static const struct dmi_system_id efifb_dmi_system_table[] __initconst = { | |
189 | EFIFB_DMI_SYSTEM_ID("Apple Computer, Inc.", "iMac4,1", M_I17), | |
190 | /* At least one of these two will be right; maybe both? */ | |
191 | EFIFB_DMI_SYSTEM_ID("Apple Computer, Inc.", "iMac5,1", M_I20), | |
192 | EFIFB_DMI_SYSTEM_ID("Apple Inc.", "iMac5,1", M_I20), | |
193 | /* At least one of these two will be right; maybe both? */ | |
194 | EFIFB_DMI_SYSTEM_ID("Apple Computer, Inc.", "iMac6,1", M_I24), | |
195 | EFIFB_DMI_SYSTEM_ID("Apple Inc.", "iMac6,1", M_I24), | |
196 | EFIFB_DMI_SYSTEM_ID("Apple Inc.", "iMac7,1", M_I20_SR), | |
197 | EFIFB_DMI_SYSTEM_ID("Apple Inc.", "iMac8,1", M_I24_8_1), | |
198 | EFIFB_DMI_SYSTEM_ID("Apple Inc.", "iMac10,1", M_I24_10_1), | |
199 | EFIFB_DMI_SYSTEM_ID("Apple Inc.", "iMac11,1", M_I27_11_1), | |
200 | EFIFB_DMI_SYSTEM_ID("Apple Computer, Inc.", "Macmini1,1", M_MINI), | |
201 | EFIFB_DMI_SYSTEM_ID("Apple Inc.", "Macmini3,1", M_MINI_3_1), | |
202 | EFIFB_DMI_SYSTEM_ID("Apple Inc.", "Macmini4,1", M_MINI_4_1), | |
203 | EFIFB_DMI_SYSTEM_ID("Apple Computer, Inc.", "MacBook1,1", M_MB), | |
204 | /* At least one of these two will be right; maybe both? */ | |
205 | EFIFB_DMI_SYSTEM_ID("Apple Computer, Inc.", "MacBook2,1", M_MB), | |
206 | EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBook2,1", M_MB), | |
207 | /* At least one of these two will be right; maybe both? */ | |
208 | EFIFB_DMI_SYSTEM_ID("Apple Computer, Inc.", "MacBook3,1", M_MB), | |
209 | EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBook3,1", M_MB), | |
210 | EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBook4,1", M_MB), | |
211 | EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBook5,1", M_MB_5_1), | |
212 | EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBook6,1", M_MB_6_1), | |
213 | EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBook7,1", M_MB_7_1), | |
214 | EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBookAir1,1", M_MBA), | |
215 | EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBookAir3,1", M_MBA_3), | |
216 | EFIFB_DMI_SYSTEM_ID("Apple Computer, Inc.", "MacBookPro1,1", M_MBP), | |
217 | EFIFB_DMI_SYSTEM_ID("Apple Computer, Inc.", "MacBookPro2,1", M_MBP_2), | |
218 | EFIFB_DMI_SYSTEM_ID("Apple Computer, Inc.", "MacBookPro2,2", M_MBP_2_2), | |
219 | EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBookPro2,1", M_MBP_2), | |
220 | EFIFB_DMI_SYSTEM_ID("Apple Computer, Inc.", "MacBookPro3,1", M_MBP_SR), | |
221 | EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBookPro3,1", M_MBP_SR), | |
222 | EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBookPro4,1", M_MBP_4), | |
223 | EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBookPro5,1", M_MBP_5_1), | |
224 | EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBookPro5,2", M_MBP_5_2), | |
225 | EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBookPro5,3", M_MBP_5_3), | |
226 | EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBookPro6,1", M_MBP_6_1), | |
227 | EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBookPro6,2", M_MBP_6_2), | |
228 | EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBookPro7,1", M_MBP_7_1), | |
229 | EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBookPro8,2", M_MBP_8_2), | |
230 | {}, | |
231 | }; | |
232 | ||
233 | __init void sysfb_apply_efi_quirks(void) | |
234 | { | |
235 | if (screen_info.orig_video_isVGA != VIDEO_TYPE_EFI || | |
236 | !(screen_info.capabilities & VIDEO_CAPABILITY_SKIP_QUIRKS)) | |
237 | dmi_check_system(efifb_dmi_system_table); | |
238 | } |