diff options
author | Linus Torvalds <torvalds@g5.osdl.org> | 2005-08-29 20:11:29 -0400 |
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committer | Linus Torvalds <torvalds@g5.osdl.org> | 2005-08-29 20:11:29 -0400 |
commit | 40193713df2cdb9c233b3fc2029ecdccb40cb1e4 (patch) | |
tree | db2ce73665b250672f5f5c0cf7544ec370c122f9 /arch/ppc | |
parent | 8f3d17fb7bcb7c255197d11469fb5e9695c9d2f4 (diff) | |
parent | c594adad5653491813959277fb87a2fef54c4e05 (diff) |
Merge HEAD from master.kernel.org:/pub/scm/linux/kernel/git/paulus/ppc64-2.6
Diffstat (limited to 'arch/ppc')
-rw-r--r-- | arch/ppc/boot/utils/addRamDisk.c | 203 |
1 files changed, 0 insertions, 203 deletions
diff --git a/arch/ppc/boot/utils/addRamDisk.c b/arch/ppc/boot/utils/addRamDisk.c deleted file mode 100644 index 93400dfcce7f..000000000000 --- a/arch/ppc/boot/utils/addRamDisk.c +++ /dev/null | |||
@@ -1,203 +0,0 @@ | |||
1 | #include <stdio.h> | ||
2 | #include <stdlib.h> | ||
3 | #include <netinet/in.h> | ||
4 | #include <unistd.h> | ||
5 | #include <sys/types.h> | ||
6 | #include <sys/stat.h> | ||
7 | #include <string.h> | ||
8 | |||
9 | #define ElfHeaderSize (64 * 1024) | ||
10 | #define ElfPages (ElfHeaderSize / 4096) | ||
11 | #define KERNELBASE (0xc0000000) | ||
12 | |||
13 | void get4k(FILE *file, char *buf ) | ||
14 | { | ||
15 | unsigned j; | ||
16 | unsigned num = fread(buf, 1, 4096, file); | ||
17 | for ( j=num; j<4096; ++j ) | ||
18 | buf[j] = 0; | ||
19 | } | ||
20 | |||
21 | void put4k(FILE *file, char *buf ) | ||
22 | { | ||
23 | fwrite(buf, 1, 4096, file); | ||
24 | } | ||
25 | |||
26 | void death(const char *msg, FILE *fdesc, const char *fname) | ||
27 | { | ||
28 | printf(msg); | ||
29 | fclose(fdesc); | ||
30 | unlink(fname); | ||
31 | exit(1); | ||
32 | } | ||
33 | |||
34 | int main(int argc, char **argv) | ||
35 | { | ||
36 | char inbuf[4096]; | ||
37 | FILE *ramDisk = NULL; | ||
38 | FILE *inputVmlinux = NULL; | ||
39 | FILE *outputVmlinux = NULL; | ||
40 | unsigned i = 0; | ||
41 | u_int32_t ramFileLen = 0; | ||
42 | u_int32_t ramLen = 0; | ||
43 | u_int32_t roundR = 0; | ||
44 | u_int32_t kernelLen = 0; | ||
45 | u_int32_t actualKernelLen = 0; | ||
46 | u_int32_t round = 0; | ||
47 | u_int32_t roundedKernelLen = 0; | ||
48 | u_int32_t ramStartOffs = 0; | ||
49 | u_int32_t ramPages = 0; | ||
50 | u_int32_t roundedKernelPages = 0; | ||
51 | u_int32_t hvReleaseData = 0; | ||
52 | u_int32_t eyeCatcher = 0xc8a5d9c4; | ||
53 | u_int32_t naca = 0; | ||
54 | u_int32_t xRamDisk = 0; | ||
55 | u_int32_t xRamDiskSize = 0; | ||
56 | if ( argc < 2 ) { | ||
57 | printf("Name of RAM disk file missing.\n"); | ||
58 | exit(1); | ||
59 | } | ||
60 | |||
61 | if ( argc < 3 ) { | ||
62 | printf("Name of vmlinux file missing.\n"); | ||
63 | exit(1); | ||
64 | } | ||
65 | |||
66 | if ( argc < 4 ) { | ||
67 | printf("Name of vmlinux output file missing.\n"); | ||
68 | exit(1); | ||
69 | } | ||
70 | |||
71 | ramDisk = fopen(argv[1], "r"); | ||
72 | if ( ! ramDisk ) { | ||
73 | printf("RAM disk file \"%s\" failed to open.\n", argv[1]); | ||
74 | exit(1); | ||
75 | } | ||
76 | inputVmlinux = fopen(argv[2], "r"); | ||
77 | if ( ! inputVmlinux ) { | ||
78 | printf("vmlinux file \"%s\" failed to open.\n", argv[2]); | ||
79 | exit(1); | ||
80 | } | ||
81 | outputVmlinux = fopen(argv[3], "w+"); | ||
82 | if ( ! outputVmlinux ) { | ||
83 | printf("output vmlinux file \"%s\" failed to open.\n", argv[3]); | ||
84 | exit(1); | ||
85 | } | ||
86 | fseek(ramDisk, 0, SEEK_END); | ||
87 | ramFileLen = ftell(ramDisk); | ||
88 | fseek(ramDisk, 0, SEEK_SET); | ||
89 | printf("%s file size = %d\n", argv[1], ramFileLen); | ||
90 | |||
91 | ramLen = ramFileLen; | ||
92 | |||
93 | roundR = 4096 - (ramLen % 4096); | ||
94 | if ( roundR ) { | ||
95 | printf("Rounding RAM disk file up to a multiple of 4096, adding %d\n", roundR); | ||
96 | ramLen += roundR; | ||
97 | } | ||
98 | |||
99 | printf("Rounded RAM disk size is %d\n", ramLen); | ||
100 | fseek(inputVmlinux, 0, SEEK_END); | ||
101 | kernelLen = ftell(inputVmlinux); | ||
102 | fseek(inputVmlinux, 0, SEEK_SET); | ||
103 | printf("kernel file size = %d\n", kernelLen); | ||
104 | if ( kernelLen == 0 ) { | ||
105 | printf("You must have a linux kernel specified as argv[2]\n"); | ||
106 | exit(1); | ||
107 | } | ||
108 | |||
109 | actualKernelLen = kernelLen - ElfHeaderSize; | ||
110 | |||
111 | printf("actual kernel length (minus ELF header) = %d\n", actualKernelLen); | ||
112 | |||
113 | round = actualKernelLen % 4096; | ||
114 | roundedKernelLen = actualKernelLen; | ||
115 | if ( round ) | ||
116 | roundedKernelLen += (4096 - round); | ||
117 | |||
118 | printf("actual kernel length rounded up to a 4k multiple = %d\n", roundedKernelLen); | ||
119 | |||
120 | ramStartOffs = roundedKernelLen; | ||
121 | ramPages = ramLen / 4096; | ||
122 | |||
123 | printf("RAM disk pages to copy = %d\n", ramPages); | ||
124 | |||
125 | // Copy 64K ELF header | ||
126 | for (i=0; i<(ElfPages); ++i) { | ||
127 | get4k( inputVmlinux, inbuf ); | ||
128 | put4k( outputVmlinux, inbuf ); | ||
129 | } | ||
130 | |||
131 | roundedKernelPages = roundedKernelLen / 4096; | ||
132 | |||
133 | fseek(inputVmlinux, ElfHeaderSize, SEEK_SET); | ||
134 | |||
135 | for ( i=0; i<roundedKernelPages; ++i ) { | ||
136 | get4k( inputVmlinux, inbuf ); | ||
137 | put4k( outputVmlinux, inbuf ); | ||
138 | } | ||
139 | |||
140 | for ( i=0; i<ramPages; ++i ) { | ||
141 | get4k( ramDisk, inbuf ); | ||
142 | put4k( outputVmlinux, inbuf ); | ||
143 | } | ||
144 | |||
145 | /* Close the input files */ | ||
146 | fclose(ramDisk); | ||
147 | fclose(inputVmlinux); | ||
148 | /* And flush the written output file */ | ||
149 | fflush(outputVmlinux); | ||
150 | |||
151 | /* fseek to the hvReleaseData pointer */ | ||
152 | fseek(outputVmlinux, ElfHeaderSize + 0x24, SEEK_SET); | ||
153 | if (fread(&hvReleaseData, 4, 1, outputVmlinux) != 1) { | ||
154 | death("Could not read hvReleaseData pointer\n", outputVmlinux, argv[3]); | ||
155 | } | ||
156 | hvReleaseData = ntohl(hvReleaseData); /* Convert to native int */ | ||
157 | printf("hvReleaseData is at %08x\n", hvReleaseData); | ||
158 | |||
159 | /* fseek to the hvReleaseData */ | ||
160 | fseek(outputVmlinux, ElfHeaderSize + hvReleaseData, SEEK_SET); | ||
161 | if (fread(inbuf, 0x40, 1, outputVmlinux) != 1) { | ||
162 | death("Could not read hvReleaseData\n", outputVmlinux, argv[3]); | ||
163 | } | ||
164 | /* Check hvReleaseData sanity */ | ||
165 | if (memcmp(inbuf, &eyeCatcher, 4) != 0) { | ||
166 | death("hvReleaseData is invalid\n", outputVmlinux, argv[3]); | ||
167 | } | ||
168 | /* Get the naca pointer */ | ||
169 | naca = ntohl(*((u_int32_t *) &inbuf[0x0c])) - KERNELBASE; | ||
170 | printf("naca is at %08x\n", naca); | ||
171 | |||
172 | /* fseek to the naca */ | ||
173 | fseek(outputVmlinux, ElfHeaderSize + naca, SEEK_SET); | ||
174 | if (fread(inbuf, 0x18, 1, outputVmlinux) != 1) { | ||
175 | death("Could not read naca\n", outputVmlinux, argv[3]); | ||
176 | } | ||
177 | xRamDisk = ntohl(*((u_int32_t *) &inbuf[0x0c])); | ||
178 | xRamDiskSize = ntohl(*((u_int32_t *) &inbuf[0x14])); | ||
179 | /* Make sure a RAM disk isn't already present */ | ||
180 | if ((xRamDisk != 0) || (xRamDiskSize != 0)) { | ||
181 | death("RAM disk is already attached to this kernel\n", outputVmlinux, argv[3]); | ||
182 | } | ||
183 | /* Fill in the values */ | ||
184 | *((u_int32_t *) &inbuf[0x0c]) = htonl(ramStartOffs); | ||
185 | *((u_int32_t *) &inbuf[0x14]) = htonl(ramPages); | ||
186 | |||
187 | /* Write out the new naca */ | ||
188 | fflush(outputVmlinux); | ||
189 | fseek(outputVmlinux, ElfHeaderSize + naca, SEEK_SET); | ||
190 | if (fwrite(inbuf, 0x18, 1, outputVmlinux) != 1) { | ||
191 | death("Could not write naca\n", outputVmlinux, argv[3]); | ||
192 | } | ||
193 | printf("RAM Disk of 0x%x pages size is attached to the kernel at offset 0x%08x\n", | ||
194 | ramPages, ramStartOffs); | ||
195 | |||
196 | /* Done */ | ||
197 | fclose(outputVmlinux); | ||
198 | /* Set permission to executable */ | ||
199 | chmod(argv[3], S_IRUSR|S_IWUSR|S_IXUSR|S_IRGRP|S_IXGRP|S_IROTH|S_IXOTH); | ||
200 | |||
201 | return 0; | ||
202 | } | ||
203 | |||