1 /* ----------------------------------------------------------------------- * 2 * 3 * Copyright 2001-2008 H. Peter Anvin - All Rights Reserved 4 * 5 * This program is free software; you can redistribute it and/or modify 6 * it under the terms of the GNU General Public License as published by 7 * the Free Software Foundation, Inc., 53 Temple Place Ste 330, 8 * Boston MA 02111-1307, USA; either version 2 of the License, or 9 * (at your option) any later version; incorporated herein by reference. 10 * 11 * ----------------------------------------------------------------------- */ 12 13 /* 14 * e820hack.c 15 * 16 * Test of INT 15:E820 canonicalization/manipulation routine 17 */ 18 19 #include <string.h> 20 #include <stdio.h> 21 #include <stdlib.h> 22 #include <inttypes.h> 23 #include "e820.h" 24 25 void *sys_bounce; /* Dummy */ 26 27 extern void parse_mem(void); 28 extern uint32_t dos_mem, low_mem, high_mem; 29 30 void __attribute__ ((noreturn)) die(void) 31 { 32 abort(); 33 } 34 35 void printranges(void) 36 { 37 int i; 38 39 for (i = 0; i < nranges; i++) { 40 printf("%016llx %016llx %d\n", 41 ranges[i].start, 42 ranges[i + 1].start - ranges[i].start, ranges[i].type); 43 } 44 } 45 46 int main(void) 47 { 48 uint64_t start, len; 49 uint32_t type; 50 char line[BUFSIZ], *p; 51 52 e820map_init(); 53 printranges(); 54 55 while (fgets(line, BUFSIZ, stdin)) { 56 p = strchr(line, ':'); 57 p = p ? p + 1 : line; 58 if (sscanf(p, " %llx %llx %d", &start, &len, &type) == 3) { 59 putchar('\n'); 60 printf("%016llx %016llx %d <-\n", start, len, type); 61 putchar('\n'); 62 insertrange(start, len, type); 63 printranges(); 64 } 65 } 66 67 parse_mem(); 68 69 putchar('\n'); 70 printf("DOS mem = %#10x (%u K)\n", dos_mem, dos_mem >> 10); 71 printf("Low mem = %#10x (%u K)\n", low_mem, low_mem >> 10); 72 printf("High mem = %#10x (%u K)\n", high_mem, high_mem >> 10); 73 putchar('\n'); 74 75 /* Now, steal a chunk (2K) of DOS memory and make sure it registered OK */ 76 insertrange(dos_mem - 2048, 2048, 2, 1); /* Type 2 = reserved */ 77 78 printranges(); 79 parse_mem(); 80 81 putchar('\n'); 82 printf("DOS mem = %#10x (%u K)\n", dos_mem, dos_mem >> 10); 83 printf("Low mem = %#10x (%u K)\n", low_mem, low_mem >> 10); 84 printf("High mem = %#10x (%u K)\n", high_mem, high_mem >> 10); 85 putchar('\n'); 86 87 return 0; 88 } 89
