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-rw-r--r--arch/i386/boot/compressed/misc.c32
-rw-r--r--arch/x86_64/boot/compressed/misc.c46
2 files changed, 35 insertions, 43 deletions
diff --git a/arch/i386/boot/compressed/misc.c b/arch/i386/boot/compressed/misc.c
index f19f3a7492a5..b2ccd543410d 100644
--- a/arch/i386/boot/compressed/misc.c
+++ b/arch/i386/boot/compressed/misc.c
@@ -24,14 +24,6 @@
24 24
25#undef memset 25#undef memset
26#undef memcpy 26#undef memcpy
27
28/*
29 * Why do we do this? Don't ask me..
30 *
31 * Incomprehensible are the ways of bootloaders.
32 */
33static void* memset(void *, int, size_t);
34static void* memcpy(void *, __const void *, size_t);
35#define memzero(s, n) memset ((s), 0, (n)) 27#define memzero(s, n) memset ((s), 0, (n))
36 28
37typedef unsigned char uch; 29typedef unsigned char uch;
@@ -93,7 +85,7 @@ static unsigned char *real_mode; /* Pointer to real-mode data */
93#endif 85#endif
94#define RM_SCREEN_INFO (*(struct screen_info *)(real_mode+0)) 86#define RM_SCREEN_INFO (*(struct screen_info *)(real_mode+0))
95 87
96extern char input_data[]; 88extern unsigned char input_data[];
97extern int input_len; 89extern int input_len;
98 90
99static long bytes_out = 0; 91static long bytes_out = 0;
@@ -103,6 +95,9 @@ static unsigned long output_ptr = 0;
103static void *malloc(int size); 95static void *malloc(int size);
104static void free(void *where); 96static void free(void *where);
105 97
98static void *memset(void *s, int c, unsigned n);
99static void *memcpy(void *dest, const void *src, unsigned n);
100
106static void putstr(const char *); 101static void putstr(const char *);
107 102
108extern int end; 103extern int end;
@@ -205,7 +200,7 @@ static void putstr(const char *s)
205 outb_p(0xff & (pos >> 1), vidport+1); 200 outb_p(0xff & (pos >> 1), vidport+1);
206} 201}
207 202
208static void* memset(void* s, int c, size_t n) 203static void* memset(void* s, int c, unsigned n)
209{ 204{
210 int i; 205 int i;
211 char *ss = (char*)s; 206 char *ss = (char*)s;
@@ -214,14 +209,13 @@ static void* memset(void* s, int c, size_t n)
214 return s; 209 return s;
215} 210}
216 211
217static void* memcpy(void* __dest, __const void* __src, 212static void* memcpy(void* dest, const void* src, unsigned n)
218 size_t __n)
219{ 213{
220 int i; 214 int i;
221 char *d = (char *)__dest, *s = (char *)__src; 215 char *d = (char *)dest, *s = (char *)src;
222 216
223 for (i=0;i<__n;i++) d[i] = s[i]; 217 for (i=0;i<n;i++) d[i] = s[i];
224 return __dest; 218 return dest;
225} 219}
226 220
227/* =========================================================================== 221/* ===========================================================================
@@ -309,7 +303,7 @@ static void setup_normal_output_buffer(void)
309#else 303#else
310 if ((RM_ALT_MEM_K > RM_EXT_MEM_K ? RM_ALT_MEM_K : RM_EXT_MEM_K) < 1024) error("Less than 2MB of memory"); 304 if ((RM_ALT_MEM_K > RM_EXT_MEM_K ? RM_ALT_MEM_K : RM_EXT_MEM_K) < 1024) error("Less than 2MB of memory");
311#endif 305#endif
312 output_data = (char *)__PHYSICAL_START; /* Normally Points to 1M */ 306 output_data = (unsigned char *)__PHYSICAL_START; /* Normally Points to 1M */
313 free_mem_end_ptr = (long)real_mode; 307 free_mem_end_ptr = (long)real_mode;
314} 308}
315 309
@@ -324,11 +318,9 @@ static void setup_output_buffer_if_we_run_high(struct moveparams *mv)
324#ifdef STANDARD_MEMORY_BIOS_CALL 318#ifdef STANDARD_MEMORY_BIOS_CALL
325 if (RM_EXT_MEM_K < (3*1024)) error("Less than 4MB of memory"); 319 if (RM_EXT_MEM_K < (3*1024)) error("Less than 4MB of memory");
326#else 320#else
327 if ((RM_ALT_MEM_K > RM_EXT_MEM_K ? RM_ALT_MEM_K : RM_EXT_MEM_K) < 321 if ((RM_ALT_MEM_K > RM_EXT_MEM_K ? RM_ALT_MEM_K : RM_EXT_MEM_K) < (3*1024)) error("Less than 4MB of memory");
328 (3*1024))
329 error("Less than 4MB of memory");
330#endif 322#endif
331 mv->low_buffer_start = output_data = (char *)LOW_BUFFER_START; 323 mv->low_buffer_start = output_data = (unsigned char *)LOW_BUFFER_START;
332 low_buffer_end = ((unsigned int)real_mode > LOW_BUFFER_MAX 324 low_buffer_end = ((unsigned int)real_mode > LOW_BUFFER_MAX
333 ? LOW_BUFFER_MAX : (unsigned int)real_mode) & ~0xfff; 325 ? LOW_BUFFER_MAX : (unsigned int)real_mode) & ~0xfff;
334 low_buffer_size = low_buffer_end - LOW_BUFFER_START; 326 low_buffer_size = low_buffer_end - LOW_BUFFER_START;
diff --git a/arch/x86_64/boot/compressed/misc.c b/arch/x86_64/boot/compressed/misc.c
index cf4b88c416dc..3755b2e394d0 100644
--- a/arch/x86_64/boot/compressed/misc.c
+++ b/arch/x86_64/boot/compressed/misc.c
@@ -77,11 +77,11 @@ static void gzip_release(void **);
77 */ 77 */
78static unsigned char *real_mode; /* Pointer to real-mode data */ 78static unsigned char *real_mode; /* Pointer to real-mode data */
79 79
80#define EXT_MEM_K (*(unsigned short *)(real_mode + 0x2)) 80#define RM_EXT_MEM_K (*(unsigned short *)(real_mode + 0x2))
81#ifndef STANDARD_MEMORY_BIOS_CALL 81#ifndef STANDARD_MEMORY_BIOS_CALL
82#define ALT_MEM_K (*(unsigned long *)(real_mode + 0x1e0)) 82#define RM_ALT_MEM_K (*(unsigned long *)(real_mode + 0x1e0))
83#endif 83#endif
84#define SCREEN_INFO (*(struct screen_info *)(real_mode+0)) 84#define RM_SCREEN_INFO (*(struct screen_info *)(real_mode+0))
85 85
86extern unsigned char input_data[]; 86extern unsigned char input_data[];
87extern int input_len; 87extern int input_len;
@@ -92,9 +92,9 @@ static unsigned long output_ptr = 0;
92 92
93static void *malloc(int size); 93static void *malloc(int size);
94static void free(void *where); 94static void free(void *where);
95 95
96void* memset(void* s, int c, unsigned n); 96static void *memset(void *s, int c, unsigned n);
97void* memcpy(void* dest, const void* src, unsigned n); 97static void *memcpy(void *dest, const void *src, unsigned n);
98 98
99static void putstr(const char *); 99static void putstr(const char *);
100 100
@@ -162,8 +162,8 @@ static void putstr(const char *s)
162 int x,y,pos; 162 int x,y,pos;
163 char c; 163 char c;
164 164
165 x = SCREEN_INFO.orig_x; 165 x = RM_SCREEN_INFO.orig_x;
166 y = SCREEN_INFO.orig_y; 166 y = RM_SCREEN_INFO.orig_y;
167 167
168 while ( ( c = *s++ ) != '\0' ) { 168 while ( ( c = *s++ ) != '\0' ) {
169 if ( c == '\n' ) { 169 if ( c == '\n' ) {
@@ -184,8 +184,8 @@ static void putstr(const char *s)
184 } 184 }
185 } 185 }
186 186
187 SCREEN_INFO.orig_x = x; 187 RM_SCREEN_INFO.orig_x = x;
188 SCREEN_INFO.orig_y = y; 188 RM_SCREEN_INFO.orig_y = y;
189 189
190 pos = (x + cols * y) * 2; /* Update cursor position */ 190 pos = (x + cols * y) * 2; /* Update cursor position */
191 outb_p(14, vidport); 191 outb_p(14, vidport);
@@ -194,7 +194,7 @@ static void putstr(const char *s)
194 outb_p(0xff & (pos >> 1), vidport+1); 194 outb_p(0xff & (pos >> 1), vidport+1);
195} 195}
196 196
197void* memset(void* s, int c, unsigned n) 197static void* memset(void* s, int c, unsigned n)
198{ 198{
199 int i; 199 int i;
200 char *ss = (char*)s; 200 char *ss = (char*)s;
@@ -203,7 +203,7 @@ void* memset(void* s, int c, unsigned n)
203 return s; 203 return s;
204} 204}
205 205
206void* memcpy(void* dest, const void* src, unsigned n) 206static void* memcpy(void* dest, const void* src, unsigned n)
207{ 207{
208 int i; 208 int i;
209 char *d = (char *)dest, *s = (char *)src; 209 char *d = (char *)dest, *s = (char *)src;
@@ -278,15 +278,15 @@ static void error(char *x)
278 putstr(x); 278 putstr(x);
279 putstr("\n\n -- System halted"); 279 putstr("\n\n -- System halted");
280 280
281 while(1); 281 while(1); /* Halt */
282} 282}
283 283
284void setup_normal_output_buffer(void) 284static void setup_normal_output_buffer(void)
285{ 285{
286#ifdef STANDARD_MEMORY_BIOS_CALL 286#ifdef STANDARD_MEMORY_BIOS_CALL
287 if (EXT_MEM_K < 1024) error("Less than 2MB of memory"); 287 if (RM_EXT_MEM_K < 1024) error("Less than 2MB of memory");
288#else 288#else
289 if ((ALT_MEM_K > EXT_MEM_K ? ALT_MEM_K : EXT_MEM_K) < 1024) error("Less than 2MB of memory"); 289 if ((RM_ALT_MEM_K > RM_EXT_MEM_K ? RM_ALT_MEM_K : RM_EXT_MEM_K) < 1024) error("Less than 2MB of memory");
290#endif 290#endif
291 output_data = (unsigned char *)__PHYSICAL_START; /* Normally Points to 1M */ 291 output_data = (unsigned char *)__PHYSICAL_START; /* Normally Points to 1M */
292 free_mem_end_ptr = (long)real_mode; 292 free_mem_end_ptr = (long)real_mode;
@@ -297,13 +297,13 @@ struct moveparams {
297 uch *high_buffer_start; int hcount; 297 uch *high_buffer_start; int hcount;
298}; 298};
299 299
300void setup_output_buffer_if_we_run_high(struct moveparams *mv) 300static void setup_output_buffer_if_we_run_high(struct moveparams *mv)
301{ 301{
302 high_buffer_start = (uch *)(((ulg)&end) + HEAP_SIZE); 302 high_buffer_start = (uch *)(((ulg)&end) + HEAP_SIZE);
303#ifdef STANDARD_MEMORY_BIOS_CALL 303#ifdef STANDARD_MEMORY_BIOS_CALL
304 if (EXT_MEM_K < (3*1024)) error("Less than 4MB of memory"); 304 if (RM_EXT_MEM_K < (3*1024)) error("Less than 4MB of memory");
305#else 305#else
306 if ((ALT_MEM_K > EXT_MEM_K ? ALT_MEM_K : EXT_MEM_K) < (3*1024)) error("Less than 4MB of memory"); 306 if ((RM_ALT_MEM_K > RM_EXT_MEM_K ? RM_ALT_MEM_K : RM_EXT_MEM_K) < (3*1024)) error("Less than 4MB of memory");
307#endif 307#endif
308 mv->low_buffer_start = output_data = (unsigned char *)LOW_BUFFER_START; 308 mv->low_buffer_start = output_data = (unsigned char *)LOW_BUFFER_START;
309 low_buffer_end = ((unsigned int)real_mode > LOW_BUFFER_MAX 309 low_buffer_end = ((unsigned int)real_mode > LOW_BUFFER_MAX
@@ -319,7 +319,7 @@ void setup_output_buffer_if_we_run_high(struct moveparams *mv)
319 mv->high_buffer_start = high_buffer_start; 319 mv->high_buffer_start = high_buffer_start;
320} 320}
321 321
322void close_output_buffer_if_we_run_high(struct moveparams *mv) 322static void close_output_buffer_if_we_run_high(struct moveparams *mv)
323{ 323{
324 if (bytes_out > low_buffer_size) { 324 if (bytes_out > low_buffer_size) {
325 mv->lcount = low_buffer_size; 325 mv->lcount = low_buffer_size;
@@ -335,7 +335,7 @@ int decompress_kernel(struct moveparams *mv, void *rmode)
335{ 335{
336 real_mode = rmode; 336 real_mode = rmode;
337 337
338 if (SCREEN_INFO.orig_video_mode == 7) { 338 if (RM_SCREEN_INFO.orig_video_mode == 7) {
339 vidmem = (char *) 0xb0000; 339 vidmem = (char *) 0xb0000;
340 vidport = 0x3b4; 340 vidport = 0x3b4;
341 } else { 341 } else {
@@ -343,8 +343,8 @@ int decompress_kernel(struct moveparams *mv, void *rmode)
343 vidport = 0x3d4; 343 vidport = 0x3d4;
344 } 344 }
345 345
346 lines = SCREEN_INFO.orig_video_lines; 346 lines = RM_SCREEN_INFO.orig_video_lines;
347 cols = SCREEN_INFO.orig_video_cols; 347 cols = RM_SCREEN_INFO.orig_video_cols;
348 348
349 if (free_mem_ptr < 0x100000) setup_normal_output_buffer(); 349 if (free_mem_ptr < 0x100000) setup_normal_output_buffer();
350 else setup_output_buffer_if_we_run_high(mv); 350 else setup_output_buffer_if_we_run_high(mv);