1 line
2.1 KiB
C
1 line
2.1 KiB
C
/*
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* Initialize netboot pram
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* - Rob Braun <bbraun@synack.net>
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* 2012
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <time.h>
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#include <string.h>
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#include <Traps.h>
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void get_netboot_pram(struct netboot *nb);
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void set_netboot_pram(struct netboot *nb);
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#pragma parameter __D0 ReadXPRam(__D0, __D1, __A0)
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short ReadXPRam(short size, short offset, char *where) = {0x4840, 0x3001, _ReadXPRam};
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#pragma parameter __D0 WriteXPRam(__D0, __D1, __A0)
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short WriteXPRam(short size, short offset, char *where) = {0x4840, 0x3001, _WriteXPRam};
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struct netboot {
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char machineID; /* this is used as part of the boot protocol */
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char protocol;
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char errors;
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char flags; /* Used to enable netbooting, and allow guest netbooting */
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char intervalCount; /* high nibble is the retry count, low nibble is the interval between retries */
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char timeout;
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unsigned long signature[4];
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char userName[31];
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char password[8];
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short serverID; /* the value here will be translated to ascii encoded hex and used as the server name to boot from. */
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char padding[7];
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};
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void get_netboot_pram(struct netboot *nb) {
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char *i = (char*)nb;
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ReadXPRam(4, 4, i);
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i += 4;
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ReadXPRam(3, 0xAB, i);
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i += 3;
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ReadXPRam(1, 0xBC, i);
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i++;
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ReadXPRam(0x20, 0x20, i);
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i += 0x20;
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ReadXPRam(0x20, 0x8B, i);
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return;
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}
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void set_netboot_pram(struct netboot *nb) {
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char *i = (char*)nb;
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WriteXPRam(4, 4, i);
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i += 4;
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WriteXPRam(3, 0xAB, i);
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i += 3;
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WriteXPRam(1, 0xBC, i);
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i++;
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WriteXPRam(0x20, 0x20, i);
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i += 0x20;
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WriteXPRam(0x20, 0x8B, i);
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return;
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}
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void main(void)
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{
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struct netboot nb;
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char *i;
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int n;
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memset(&nb, 0, sizeof(nb));
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get_netboot_pram(&nb);
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for(i = (char*)&nb, n = 0; n < sizeof(nb); n++) {
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printf("0x%x ", i[n]);
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}
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printf("\n");
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#if 1
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memset(&nb, 0, sizeof(nb));
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nb.machineID = 1;
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nb.protocol = 1;
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nb.errors = 0;
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nb.flags = 0xC0;
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nb.intervalCount = 0x24; /* low nibble is interval, high nibble is count for lookups */
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nb.timeout = 127;
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nb.signature[0] = 'PWD ';
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//nb.userName[0] = '\0';
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strcpy(nb.userName, "bbraun");
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nb.password[0] = '\0';
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nb.serverID = 0xEBAB;
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set_netboot_pram(&nb);
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#endif
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}
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