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authorArnd Bergmann <arnd@arndb.de>2009-06-12 03:53:47 -0400
committerArnd Bergmann <arnd@arndb.de>2009-06-12 05:32:58 -0400
commit5b02ee3d219f9e01b6e9146e25613822cfc2e5ce (patch)
tree7ce9126738c3cf4b37d67170d0e4b34818c057a9 /arch/x86/boot/video-vga.c
parent26a28fa4fea5b8c65713aa50c124f76a88c7924d (diff)
parent8ebf975608aaebd7feb33d77f07ba21a6380e086 (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.c95
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 */
40static u8 vga_set_basic_mode(void) 41static 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)
82static void vga_set_8font(void) 81static 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
99static void vga_set_14font(void) 109static 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
113static void vga_set_80x43(void) 132static 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 */
226static int vga_probe(void) 251static 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;