Branch data Line data Source code
1 : : // SPDX-License-Identifier: GPL-2.0-or-later
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>
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>
18 : : #include <linux/efi.h>
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>
25 : :
26 : : #include <asm/efi.h>
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 : :
70 : 0 : void efifb_setup_from_dmi(struct screen_info *si, const char *opt)
71 : : {
72 : 0 : int i;
73 : :
74 [ # # ]: 0 : for (i = 0; i < M_UNKNOWN; i++) {
75 [ # # ]: 0 : if (efifb_dmi_list[i].base != 0 &&
76 [ # # ]: 0 : !strcmp(opt, efifb_dmi_list[i].optname)) {
77 : 0 : si->lfb_base = efifb_dmi_list[i].base;
78 : 0 : si->lfb_linelength = efifb_dmi_list[i].stride;
79 : 0 : si->lfb_width = efifb_dmi_list[i].width;
80 : 0 : si->lfb_height = efifb_dmi_list[i].height;
81 : : }
82 : : }
83 : 0 : }
84 : :
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 : 0 : static int __init efifb_set_system(const struct dmi_system_id *id)
95 : : {
96 : 0 : struct efifb_dmi_info *info = id->driver_data;
97 : :
98 [ # # # # : 0 : 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 [ # # ]: 0 : if (screen_info.lfb_base == 0) {
104 : : #if defined(CONFIG_PCI)
105 : 0 : struct pci_dev *dev = NULL;
106 : 0 : int found_bar = 0;
107 : : #endif
108 [ # # ]: 0 : if (info->base) {
109 [ # # ]: 0 : 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 [ # # ]: 0 : for_each_pci_dev(dev) {
118 : 0 : int i;
119 [ # # ]: 0 : if ((dev->class >> 8) != PCI_CLASS_DISPLAY_VGA)
120 : 0 : continue;
121 [ # # ]: 0 : for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) {
122 : 0 : resource_size_t start, end;
123 : 0 : unsigned long flags;
124 : :
125 : 0 : flags = pci_resource_flags(dev, i);
126 [ # # ]: 0 : if (!(flags & IORESOURCE_MEM))
127 : 0 : continue;
128 : :
129 [ # # ]: 0 : if (flags & IORESOURCE_UNSET)
130 : 0 : continue;
131 : :
132 [ # # # # : 0 : if (pci_resource_len(dev, i) == 0)
# # ]
133 : 0 : continue;
134 : :
135 : 0 : start = pci_resource_start(dev, i);
136 : 0 : end = pci_resource_end(dev, i);
137 [ # # # # ]: 0 : if (screen_info.lfb_base >= start &&
138 : : screen_info.lfb_base < end) {
139 : : found_bar = 1;
140 : : break;
141 : : }
142 : : }
143 : : }
144 [ # # ]: 0 : if (!found_bar)
145 : 0 : screen_info.lfb_base = 0;
146 : : #endif
147 : : }
148 : : }
149 [ # # ]: 0 : if (screen_info.lfb_base) {
150 [ # # # # ]: 0 : screen_info.lfb_linelength = choose_value(info->stride,
151 : : screen_info.lfb_linelength, OVERRIDE_STRIDE,
152 : : info->flags);
153 [ # # # # ]: 0 : screen_info.lfb_width = choose_value(info->width,
154 : : screen_info.lfb_width, OVERRIDE_WIDTH,
155 : : info->flags);
156 [ # # # # ]: 0 : screen_info.lfb_height = choose_value(info->height,
157 : : screen_info.lfb_height, OVERRIDE_HEIGHT,
158 : : info->flags);
159 [ # # ]: 0 : if (screen_info.orig_video_isVGA == 0)
160 : 0 : screen_info.orig_video_isVGA = VIDEO_TYPE_EFI;
161 : : } else {
162 : 0 : screen_info.lfb_linelength = 0;
163 : 0 : screen_info.lfb_width = 0;
164 : 0 : screen_info.lfb_height = 0;
165 : 0 : screen_info.orig_video_isVGA = 0;
166 : 0 : return 0;
167 : : }
168 : :
169 : 0 : 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 : 0 : 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 : : /*
234 : : * Some devices have a portrait LCD but advertise a landscape resolution (and
235 : : * pitch). We simply swap width and height for these devices so that we can
236 : : * correctly deal with some of them coming with multiple resolutions.
237 : : */
238 : : static const struct dmi_system_id efifb_dmi_swap_width_height[] __initconst = {
239 : : {
240 : : /*
241 : : * Lenovo MIIX310-10ICR, only some batches have the troublesome
242 : : * 800x1280 portrait screen. Luckily the portrait version has
243 : : * its own BIOS version, so we match on that.
244 : : */
245 : : .matches = {
246 : : DMI_EXACT_MATCH(DMI_SYS_VENDOR, "LENOVO"),
247 : : DMI_EXACT_MATCH(DMI_PRODUCT_VERSION, "MIIX 310-10ICR"),
248 : : DMI_EXACT_MATCH(DMI_BIOS_VERSION, "1HCN44WW"),
249 : : },
250 : : },
251 : : {
252 : : /* Lenovo MIIX 320-10ICR with 800x1280 portrait screen */
253 : : .matches = {
254 : : DMI_EXACT_MATCH(DMI_SYS_VENDOR, "LENOVO"),
255 : : DMI_EXACT_MATCH(DMI_PRODUCT_VERSION,
256 : : "Lenovo MIIX 320-10ICR"),
257 : : },
258 : : },
259 : : {
260 : : /* Lenovo D330 with 800x1280 or 1200x1920 portrait screen */
261 : : .matches = {
262 : : DMI_EXACT_MATCH(DMI_SYS_VENDOR, "LENOVO"),
263 : : DMI_EXACT_MATCH(DMI_PRODUCT_VERSION,
264 : : "Lenovo ideapad D330-10IGM"),
265 : : },
266 : : },
267 : : {},
268 : : };
269 : :
270 : 13 : __init void sysfb_apply_efi_quirks(void)
271 : : {
272 [ - + ]: 13 : if (screen_info.orig_video_isVGA != VIDEO_TYPE_EFI ||
273 [ # # ]: 0 : !(screen_info.capabilities & VIDEO_CAPABILITY_SKIP_QUIRKS))
274 : 13 : dmi_check_system(efifb_dmi_system_table);
275 : :
276 [ - + - - ]: 13 : if (screen_info.orig_video_isVGA == VIDEO_TYPE_EFI &&
277 : 0 : dmi_check_system(efifb_dmi_swap_width_height)) {
278 : 0 : u16 temp = screen_info.lfb_width;
279 : :
280 : 0 : screen_info.lfb_width = screen_info.lfb_height;
281 : 0 : screen_info.lfb_height = temp;
282 : 0 : screen_info.lfb_linelength = 4 * screen_info.lfb_width;
283 : : }
284 : 13 : }
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