diff options
author | Arnd Bergmann <arnd@arndb.de> | 2009-06-12 03:53:47 -0400 |
---|---|---|
committer | Arnd Bergmann <arnd@arndb.de> | 2009-06-12 05:32:58 -0400 |
commit | 5b02ee3d219f9e01b6e9146e25613822cfc2e5ce (patch) | |
tree | 7ce9126738c3cf4b37d67170d0e4b34818c057a9 /arch/x86/boot/video-vga.c | |
parent | 26a28fa4fea5b8c65713aa50c124f76a88c7924d (diff) | |
parent | 8ebf975608aaebd7feb33d77f07ba21a6380e086 (diff) |
asm-generic: merge branch 'master' of torvalds/linux-2.6
Fixes a merge conflict against the x86 tree caused by a fix to
atomic.h which I renamed to atomic_long.h.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'arch/x86/boot/video-vga.c')
-rw-r--r-- | arch/x86/boot/video-vga.c | 95 |
1 files changed, 59 insertions, 36 deletions
diff --git a/arch/x86/boot/video-vga.c b/arch/x86/boot/video-vga.c index 9e0587a37768..8f8d827e254d 100644 --- a/arch/x86/boot/video-vga.c +++ b/arch/x86/boot/video-vga.c | |||
@@ -2,6 +2,7 @@ | |||
2 | * | 2 | * |
3 | * Copyright (C) 1991, 1992 Linus Torvalds | 3 | * Copyright (C) 1991, 1992 Linus Torvalds |
4 | * Copyright 2007 rPath, Inc. - All Rights Reserved | 4 | * Copyright 2007 rPath, Inc. - All Rights Reserved |
5 | * Copyright 2009 Intel Corporation; author H. Peter Anvin | ||
5 | * | 6 | * |
6 | * This file is part of the Linux kernel, and is made available under | 7 | * This file is part of the Linux kernel, and is made available under |
7 | * the terms of the GNU General Public License version 2. | 8 | * the terms of the GNU General Public License version 2. |
@@ -39,30 +40,30 @@ static __videocard video_vga; | |||
39 | /* Set basic 80x25 mode */ | 40 | /* Set basic 80x25 mode */ |
40 | static u8 vga_set_basic_mode(void) | 41 | static u8 vga_set_basic_mode(void) |
41 | { | 42 | { |
43 | struct biosregs ireg, oreg; | ||
42 | u16 ax; | 44 | u16 ax; |
43 | u8 rows; | 45 | u8 rows; |
44 | u8 mode; | 46 | u8 mode; |
45 | 47 | ||
48 | initregs(&ireg); | ||
49 | |||
46 | #ifdef CONFIG_VIDEO_400_HACK | 50 | #ifdef CONFIG_VIDEO_400_HACK |
47 | if (adapter >= ADAPTER_VGA) { | 51 | if (adapter >= ADAPTER_VGA) { |
48 | asm volatile(INT10 | 52 | ireg.ax = 0x1202; |
49 | : : "a" (0x1202), "b" (0x0030) | 53 | ireg.bx = 0x0030; |
50 | : "ecx", "edx", "esi", "edi"); | 54 | intcall(0x10, &ireg, NULL); |
51 | } | 55 | } |
52 | #endif | 56 | #endif |
53 | 57 | ||
54 | ax = 0x0f00; | 58 | ax = 0x0f00; |
55 | asm volatile(INT10 | 59 | intcall(0x10, &ireg, &oreg); |
56 | : "+a" (ax) | 60 | mode = oreg.al; |
57 | : : "ebx", "ecx", "edx", "esi", "edi"); | ||
58 | |||
59 | mode = (u8)ax; | ||
60 | 61 | ||
61 | set_fs(0); | 62 | set_fs(0); |
62 | rows = rdfs8(0x484); /* rows minus one */ | 63 | rows = rdfs8(0x484); /* rows minus one */ |
63 | 64 | ||
64 | #ifndef CONFIG_VIDEO_400_HACK | 65 | #ifndef CONFIG_VIDEO_400_HACK |
65 | if ((ax == 0x5003 || ax == 0x5007) && | 66 | if ((oreg.ax == 0x5003 || oreg.ax == 0x5007) && |
66 | (rows == 0 || rows == 24)) | 67 | (rows == 0 || rows == 24)) |
67 | return mode; | 68 | return mode; |
68 | #endif | 69 | #endif |
@@ -71,10 +72,8 @@ static u8 vga_set_basic_mode(void) | |||
71 | mode = 3; | 72 | mode = 3; |
72 | 73 | ||
73 | /* Set the mode */ | 74 | /* Set the mode */ |
74 | ax = mode; | 75 | ireg.ax = mode; /* AH=0: set mode */ |
75 | asm volatile(INT10 | 76 | intcall(0x10, &ireg, NULL); |
76 | : "+a" (ax) | ||
77 | : : "ebx", "ecx", "edx", "esi", "edi"); | ||
78 | do_restore = 1; | 77 | do_restore = 1; |
79 | return mode; | 78 | return mode; |
80 | } | 79 | } |
@@ -82,43 +81,69 @@ static u8 vga_set_basic_mode(void) | |||
82 | static void vga_set_8font(void) | 81 | static void vga_set_8font(void) |
83 | { | 82 | { |
84 | /* Set 8x8 font - 80x43 on EGA, 80x50 on VGA */ | 83 | /* Set 8x8 font - 80x43 on EGA, 80x50 on VGA */ |
84 | struct biosregs ireg; | ||
85 | |||
86 | initregs(&ireg); | ||
85 | 87 | ||
86 | /* Set 8x8 font */ | 88 | /* Set 8x8 font */ |
87 | asm volatile(INT10 : : "a" (0x1112), "b" (0)); | 89 | ireg.ax = 0x1112; |
90 | /* ireg.bl = 0; */ | ||
91 | intcall(0x10, &ireg, NULL); | ||
88 | 92 | ||
89 | /* Use alternate print screen */ | 93 | /* Use alternate print screen */ |
90 | asm volatile(INT10 : : "a" (0x1200), "b" (0x20)); | 94 | ireg.ax = 0x1200; |
95 | ireg.bl = 0x20; | ||
96 | intcall(0x10, &ireg, NULL); | ||
91 | 97 | ||
92 | /* Turn off cursor emulation */ | 98 | /* Turn off cursor emulation */ |
93 | asm volatile(INT10 : : "a" (0x1201), "b" (0x34)); | 99 | ireg.ax = 0x1201; |
100 | ireg.bl = 0x34; | ||
101 | intcall(0x10, &ireg, NULL); | ||
94 | 102 | ||
95 | /* Cursor is scan lines 6-7 */ | 103 | /* Cursor is scan lines 6-7 */ |
96 | asm volatile(INT10 : : "a" (0x0100), "c" (0x0607)); | 104 | ireg.ax = 0x0100; |
105 | ireg.cx = 0x0607; | ||
106 | intcall(0x10, &ireg, NULL); | ||
97 | } | 107 | } |
98 | 108 | ||
99 | static void vga_set_14font(void) | 109 | static void vga_set_14font(void) |
100 | { | 110 | { |
101 | /* Set 9x14 font - 80x28 on VGA */ | 111 | /* Set 9x14 font - 80x28 on VGA */ |
112 | struct biosregs ireg; | ||
113 | |||
114 | initregs(&ireg); | ||
102 | 115 | ||
103 | /* Set 9x14 font */ | 116 | /* Set 9x14 font */ |
104 | asm volatile(INT10 : : "a" (0x1111), "b" (0)); | 117 | ireg.ax = 0x1111; |
118 | /* ireg.bl = 0; */ | ||
119 | intcall(0x10, &ireg, NULL); | ||
105 | 120 | ||
106 | /* Turn off cursor emulation */ | 121 | /* Turn off cursor emulation */ |
107 | asm volatile(INT10 : : "a" (0x1201), "b" (0x34)); | 122 | ireg.ax = 0x1201; |
123 | ireg.bl = 0x34; | ||
124 | intcall(0x10, &ireg, NULL); | ||
108 | 125 | ||
109 | /* Cursor is scan lines 11-12 */ | 126 | /* Cursor is scan lines 11-12 */ |
110 | asm volatile(INT10 : : "a" (0x0100), "c" (0x0b0c)); | 127 | ireg.ax = 0x0100; |
128 | ireg.cx = 0x0b0c; | ||
129 | intcall(0x10, &ireg, NULL); | ||
111 | } | 130 | } |
112 | 131 | ||
113 | static void vga_set_80x43(void) | 132 | static void vga_set_80x43(void) |
114 | { | 133 | { |
115 | /* Set 80x43 mode on VGA (not EGA) */ | 134 | /* Set 80x43 mode on VGA (not EGA) */ |
135 | struct biosregs ireg; | ||
136 | |||
137 | initregs(&ireg); | ||
116 | 138 | ||
117 | /* Set 350 scans */ | 139 | /* Set 350 scans */ |
118 | asm volatile(INT10 : : "a" (0x1201), "b" (0x30)); | 140 | ireg.ax = 0x1201; |
141 | ireg.bl = 0x30; | ||
142 | intcall(0x10, &ireg, NULL); | ||
119 | 143 | ||
120 | /* Reset video mode */ | 144 | /* Reset video mode */ |
121 | asm volatile(INT10 : : "a" (0x0003)); | 145 | ireg.ax = 0x0003; |
146 | intcall(0x10, &ireg, NULL); | ||
122 | 147 | ||
123 | vga_set_8font(); | 148 | vga_set_8font(); |
124 | } | 149 | } |
@@ -225,8 +250,6 @@ static int vga_set_mode(struct mode_info *mode) | |||
225 | */ | 250 | */ |
226 | static int vga_probe(void) | 251 | static int vga_probe(void) |
227 | { | 252 | { |
228 | u16 ega_bx; | ||
229 | |||
230 | static const char *card_name[] = { | 253 | static const char *card_name[] = { |
231 | "CGA/MDA/HGC", "EGA", "VGA" | 254 | "CGA/MDA/HGC", "EGA", "VGA" |
232 | }; | 255 | }; |
@@ -240,26 +263,26 @@ static int vga_probe(void) | |||
240 | sizeof(ega_modes)/sizeof(struct mode_info), | 263 | sizeof(ega_modes)/sizeof(struct mode_info), |
241 | sizeof(vga_modes)/sizeof(struct mode_info), | 264 | sizeof(vga_modes)/sizeof(struct mode_info), |
242 | }; | 265 | }; |
243 | u8 vga_flag; | ||
244 | 266 | ||
245 | asm(INT10 | 267 | struct biosregs ireg, oreg; |
246 | : "=b" (ega_bx) | 268 | |
247 | : "a" (0x1200), "b" (0x10) /* Check EGA/VGA */ | 269 | initregs(&ireg); |
248 | : "ecx", "edx", "esi", "edi"); | 270 | |
271 | ireg.ax = 0x1200; | ||
272 | ireg.bl = 0x10; /* Check EGA/VGA */ | ||
273 | intcall(0x10, &ireg, &oreg); | ||
249 | 274 | ||
250 | #ifndef _WAKEUP | 275 | #ifndef _WAKEUP |
251 | boot_params.screen_info.orig_video_ega_bx = ega_bx; | 276 | boot_params.screen_info.orig_video_ega_bx = oreg.bx; |
252 | #endif | 277 | #endif |
253 | 278 | ||
254 | /* If we have MDA/CGA/HGC then BL will be unchanged at 0x10 */ | 279 | /* If we have MDA/CGA/HGC then BL will be unchanged at 0x10 */ |
255 | if ((u8)ega_bx != 0x10) { | 280 | if (oreg.bl != 0x10) { |
256 | /* EGA/VGA */ | 281 | /* EGA/VGA */ |
257 | asm(INT10 | 282 | ireg.ax = 0x1a00; |
258 | : "=a" (vga_flag) | 283 | intcall(0x10, &ireg, &oreg); |
259 | : "a" (0x1a00) | ||
260 | : "ebx", "ecx", "edx", "esi", "edi"); | ||
261 | 284 | ||
262 | if (vga_flag == 0x1a) { | 285 | if (oreg.al == 0x1a) { |
263 | adapter = ADAPTER_VGA; | 286 | adapter = ADAPTER_VGA; |
264 | #ifndef _WAKEUP | 287 | #ifndef _WAKEUP |
265 | boot_params.screen_info.orig_video_isVGA = 1; | 288 | boot_params.screen_info.orig_video_isVGA = 1; |