7 void xlate( char * inb, char * trb, unsigned len )
10 for ( i=0; i<len; ++i ) {
28 #define ElfHeaderSize (64 * 1024)
29 #define ElfPages (ElfHeaderSize / 4096)
30 #define KERNELBASE (0xc0000000)
32 void get4k( /*istream *inf*/FILE *file, char *buf )
35 unsigned num = fread(buf, 1, 4096, file);
36 for ( j=num; j<4096; ++j )
40 void put4k( /*ostream *outf*/FILE *file, char *buf )
42 fwrite(buf, 1, 4096, file);
45 int main(int argc, char **argv)
49 FILE *inputVmlinux = NULL;
50 FILE *outputVmlinux = NULL;
52 unsigned long ramFileLen = 0;
53 unsigned long ramLen = 0;
54 unsigned long roundR = 0;
55 unsigned long kernelLen = 0;
56 unsigned long actualKernelLen = 0;
57 unsigned long round = 0;
58 unsigned long roundedKernelLen = 0;
59 unsigned long ramStartOffs = 0;
60 unsigned long ramPages = 0;
61 unsigned long roundedKernelPages = 0;
63 printf("Name of System Map file missing.\n");
68 printf("Name of vmlinux file missing.\n");
73 printf("Name of vmlinux output file missing.\n");
77 ramDisk = fopen(argv[1], "r");
79 printf("System Map file \"%s\" failed to open.\n", argv[1]);
82 inputVmlinux = fopen(argv[2], "r");
83 if ( ! inputVmlinux ) {
84 printf("vmlinux file \"%s\" failed to open.\n", argv[2]);
87 outputVmlinux = fopen(argv[3], "w");
88 if ( ! outputVmlinux ) {
89 printf("output vmlinux file \"%s\" failed to open.\n", argv[3]);
92 fseek(ramDisk, 0, SEEK_END);
93 ramFileLen = ftell(ramDisk);
94 fseek(ramDisk, 0, SEEK_SET);
95 printf("%s file size = %ld\n", argv[1], ramFileLen);
99 roundR = 4096 - (ramLen % 4096);
101 printf("Rounding System Map file up to a multiple of 4096, adding %ld\n", roundR);
105 printf("Rounded System Map size is %ld\n", ramLen);
106 fseek(inputVmlinux, 0, SEEK_END);
107 kernelLen = ftell(inputVmlinux);
108 fseek(inputVmlinux, 0, SEEK_SET);
109 printf("kernel file size = %ld\n", kernelLen);
110 if ( kernelLen == 0 ) {
111 printf("You must have a linux kernel specified as argv[2]\n");
115 actualKernelLen = kernelLen - ElfHeaderSize;
117 printf("actual kernel length (minus ELF header) = %ld\n", actualKernelLen);
119 round = actualKernelLen % 4096;
120 roundedKernelLen = actualKernelLen;
122 roundedKernelLen += (4096 - round);
124 printf("actual kernel length rounded up to a 4k multiple = %ld\n", roundedKernelLen);
126 ramStartOffs = roundedKernelLen;
127 ramPages = ramLen / 4096;
129 printf("System map pages to copy = %ld\n", ramPages);
131 // Copy 64K ELF header
132 for (i=0; i<(ElfPages); ++i) {
133 get4k( inputVmlinux, inbuf );
134 put4k( outputVmlinux, inbuf );
139 roundedKernelPages = roundedKernelLen / 4096;
141 fseek(inputVmlinux, ElfHeaderSize, SEEK_SET);
144 for ( i=0; i<roundedKernelPages; ++i ) {
145 get4k( inputVmlinux, inbuf );
148 printf("Storing embedded_sysmap_start at 0x3c\n");
149 p = (unsigned long *)(inbuf + 0x3c);
151 #if (BYTE_ORDER == __BIG_ENDIAN)
154 *p = bswap_32(ramStartOffs);
157 printf("Storing embedded_sysmap_end at 0x44\n");
158 p = (unsigned long *)(inbuf + 0x44);
159 #if (BYTE_ORDER == __BIG_ENDIAN)
160 *p = ramStartOffs + ramFileLen;
162 *p = bswap_32(ramStartOffs + ramFileLen);
165 put4k( outputVmlinux, inbuf );
170 for ( i=0; i<ramPages; ++i ) {
171 get4k( ramDisk, inbuf );
172 put4k( outputVmlinux, inbuf );
178 fclose(inputVmlinux);
179 fclose(outputVmlinux);
180 /* Set permission to executable */
181 chmod(argv[3], S_IRUSR|S_IWUSR|S_IXUSR|S_IRGRP|S_IXGRP|S_IROTH|S_IXOTH);