int main(int argc, char *argv[]) { int error; char *file; u_long marks[MARK_MAX]; extern char start[]; /* top of stack (see srt0.S) */ vaddr_t bstart_va; prom_init(); mmu_init(); printf(">> OpenBSD BOOT %s\n", version); /* * Find the physical memory area that's in use by the boot loader. * Our stack grows down from label `start'; assume we need no more * than 16K of stack space. * The top of the boot loader is the next 4MB boundary. */ bstart_va = (vaddr_t)start - LOWSTACK; if (pmap_extract(bstart_va, &bstart) != 0) panic("can't figure out where we have been loaded"); if (bstart != bstart_va) compat = 0; bend = roundup(bstart, FOURMB); #ifdef DEBUG printf("bstart %p bend %p\n", bstart, bend); #endif file = prom_bootfile; if (file == 0 || *file == 0) file = DEFAULT_KERNEL; for (;;) { if (prom_boothow & RB_ASKNAME) { printf("device[%s]: ", prom_bootdevice); gets(dbuf); if (dbuf[0]) prom_bootdevice = dbuf; printf("boot: "); gets(fbuf); if (fbuf[0]) file = fbuf; } printf("Booting %s\n", file); if ((error = loadk(file, marks)) == 0) break; printf("Cannot load %s: error=%d\n", file, error); prom_boothow |= RB_ASKNAME; } /* Note: args 2-4 not used due to conflicts with SunOS loaders */ (*(entry_t)marks[MARK_ENTRY])(cputyp == CPU_SUN4 ? PROM_LOADADDR : (u_long)promvec, 0, 0, 0, marks[MARK_END], DDB_MAGIC1); _rtt(); }
int main(void) { int error, i; char kernel[MAX_PROM_PATH]; const char *k; u_long marks[MARK_MAX], bootinfo; struct btinfo_symtab bi_sym; struct btinfo_boothowto bi_howto; void *arg; #ifdef HEAP_VARIABLE { extern char end[]; setheap((void *)ALIGN(end), (void *)0xffffffff); } #endif prom_init(); mmu_init(); printf(">> %s, Revision %s\n", bootprog_name, bootprog_rev); /* massage machine prom */ prom_patch(); /* * get default kernel. */ k = prom_getbootfile(); if (k != NULL && *k != '\0') { i = -1; /* not using the kernels */ strcpy(kernel, k); } else { i = 0; strcpy(kernel, kernels[i]); } k = prom_getbootpath(); if (k && *k) strcpy(prom_bootdevice, k); boothowto = bootoptions(prom_getbootargs()); for (;;) { /* * ask for a kernel first .. */ if (boothowto & RB_ASKNAME) { printf("device[%s] (\"halt\" to halt): ", prom_bootdevice); gets(dbuf); if (strcmp(dbuf, "halt") == 0) _rtt(); if (dbuf[0]) strcpy(prom_bootdevice, dbuf); printf("boot (press RETURN to try default list): "); gets(fbuf); if (fbuf[0]) strcpy(kernel, fbuf); else { boothowto &= ~RB_ASKNAME; i = 0; strcpy(kernel, kernels[i]); } } printf("Booting %s\n", kernel); if ((error = loadk(kernel, marks)) == 0) break; if (error != ENOENT) { printf("Cannot load %s: error=%d\n", kernel, error); boothowto |= RB_ASKNAME; } /* * if we have are not in askname mode, and we aren't using the * prom bootfile, try the next one (if it exits). otherwise, * go into askname mode. */ if ((boothowto & RB_ASKNAME) == 0 && i != -1 && kernels[++i]) { strcpy(kernel, kernels[i]); printf(": trying %s...\n", kernel); } else { printf("\n"); boothowto |= RB_ASKNAME; } } marks[MARK_END] = (((u_long)marks[MARK_END] + sizeof(u_long) - 1)) & (-sizeof(u_long)); arg = (prom_version() == PROM_OLDMON) ? (void *)PROM_LOADADDR : romp; /* Setup boot info structure at the end of the kernel image */ bootinfo = bi_init(marks[MARK_END] & loadaddrmask); /* Add kernel symbols to bootinfo */ bi_sym.nsym = marks[MARK_NSYM] & loadaddrmask; bi_sym.ssym = marks[MARK_SYM] & loadaddrmask; bi_sym.esym = marks[MARK_END] & loadaddrmask; bi_add(&bi_sym, BTINFO_SYMTAB, sizeof(bi_sym)); /* Add boothowto */ bi_howto.boothowto = boothowto; bi_add(&bi_howto, BTINFO_BOOTHOWTO, sizeof(bi_howto)); /* Add kernel path to bootinfo */ i = sizeof(struct btinfo_common) + strlen(kernel) + 1; /* Impose limit (somewhat arbitrary) */ if (i < BOOTINFO_SIZE / 2) { union { struct btinfo_kernelfile bi_file; char x[i]; } U; strcpy(U.bi_file.name, kernel); bi_add(&U.bi_file, BTINFO_KERNELFILE, i); } (*(entry_t)marks[MARK_ENTRY])(arg, 0, 0, 0, bootinfo, DDB_MAGIC2); _rtt(); }