static int
sysctl_machdep_booted_kernel(SYSCTLFN_ARGS)
{
struct sysctlnode node = *rnode;
char *cp;
cp = prom_getbootfile();
if (cp == NULL || cp[0] == '\0')
return (ENOENT);
node.sysctl_data = cp;
node.sysctl_size = strlen(cp) + 1;
return (sysctl_lookup(SYSCTLFN_CALL(&node)));
}
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();
}
