void
OF_init(int (*openfirm)(void *))
{
phandle_t options;
char mode[sizeof("true")];
openfirmware = openfirm;
if ((chosen = OF_finddevice("/chosen")) == -1)
OF_exit();
if (OF_getprop(chosen, "memory", &memory, sizeof(memory)) == -1) {
memory = OF_open("/memory");
if (memory == -1)
memory = OF_open("/memory@0");
if (memory == -1)
OF_exit();
}
if (OF_getprop(chosen, "mmu", &mmu, sizeof(mmu)) == -1)
OF_exit();
/*
* Check if we run in real mode. If so, we do not need to map
* memory later on.
*/
options = OF_finddevice("/options");
if (OF_getprop(options, "real-mode?", mode, sizeof(mode)) > 0 &&
strcmp(mode, "true") == 0)
real_mode = 1;
}
static vm_offset_t
init_heap(void)
{
if ((pmemh = OF_finddevice("/memory")) == (phandle_t)-1)
OF_exit();
if (OF_getprop(pmemh, "available", memslices, sizeof(memslices)) <= 0)
OF_exit();
/* There is no need for continuous physical heap memory. */
heapva = (vm_offset_t)OF_claim((void *)HEAPVA, HEAPSZ, 32);
return heapva;
}
static void
setup(void)
{
int chosen;
if ((chosen = OF_finddevice("/chosen")) == -1)
OF_exit();
if (OF_getprop(chosen, "stdin", &stdin, sizeof(stdin)) !=
sizeof(stdin) ||
OF_getprop(chosen, "stdout", &stdout, sizeof(stdout)) !=
sizeof(stdout))
OF_exit();
}
static int
command_halt(int argc, char *argv[])
{
OF_exit();
return (CMD_OK);
}
static void
startup(void *vpd, int res, int (*openfirm)(void *), char *arg, int argl)
{
openfirmware = openfirm;
setup();
main();
OF_exit();
}
static int
command_reboot(int argc, char *argv[])
{
int i;
for (i = 0; devsw[i] != NULL; ++i)
if (devsw[i]->dv_cleanup != NULL)
(devsw[i]->dv_cleanup)();
printf("Rebooting...\n");
OF_exit();
}
static void
parseargs(char *str, int *howtop)
{
char *cp;
/* Allow user to drop back to the PROM. */
if (strcmp(str, "exit") == 0)
OF_exit();
*howtop = 0;
for (cp = str; *cp; cp++)
if (*cp == ' ' || *cp == '-')
goto found;
return;
found:
*cp++ = '\0';
while (*cp)
BOOT_FLAG(*cp++, *howtop);
}
void
exit(int code)
{
OF_exit();
}
int
main(int (*openfirm)(void *))
{
phandle_t root;
int i;
char bootpath[64];
char *ch;
int bargc;
char **bargv;
/*
* Initialize the Open Firmware routines by giving them the entry point.
*/
OF_init(openfirm);
root = OF_finddevice("/");
scells = acells = 1;
OF_getprop(root, "#address-cells", &acells, sizeof(acells));
OF_getprop(root, "#size-cells", &scells, sizeof(scells));
/*
* Initialise the heap as early as possible. Once this is done,
* alloc() is usable. The stack is buried inside us, so this is
* safe.
*/
init_heap();
/*
* Set up console.
*/
cons_probe();
/*
* March through the device switch probing for things.
*/
for (i = 0; devsw[i] != NULL; i++)
if (devsw[i]->dv_init != NULL)
(devsw[i]->dv_init)();
printf("\n");
printf("%s, Revision %s\n", bootprog_name, bootprog_rev);
printf("(%s, %s)\n", bootprog_maker, bootprog_date);
printf("Memory: %lldKB\n", memsize() / 1024);
OF_getprop(chosen, "bootpath", bootpath, 64);
ch = strchr(bootpath, ':');
*ch = '\0';
printf("Booted from: %s\n", bootpath);
printf("\n");
/*
* Only parse the first bootarg if present. It should
* be simple to handle extra arguments
*/
OF_getprop(chosen, "bootargs", bootargs, sizeof(bootargs));
bargc = 0;
parse(&bargc, &bargv, bootargs);
if (bargc == 1)
env_setenv("currdev", EV_VOLATILE, bargv[0], ofw_setcurrdev,
env_nounset);
else
env_setenv("currdev", EV_VOLATILE, bootpath,
ofw_setcurrdev, env_nounset);
env_setenv("loaddev", EV_VOLATILE, bootpath, env_noset,
env_nounset);
setenv("LINES", "24", 1); /* optional */
archsw.arch_getdev = ofw_getdev;
archsw.arch_copyin = ofw_copyin;
archsw.arch_copyout = ofw_copyout;
archsw.arch_readin = ofw_readin;
archsw.arch_autoload = ofw_autoload;
interact(NULL); /* doesn't return */
OF_exit();
return 0;
}
void
ppc_exit(void)
{
OF_exit();
}
void
main(void)
{
extern char bootprog_name[], bootprog_rev[];
int chosen;
char bootline[512]; /* Should check size? */
char *cp, *startbuf, *endbuf;
u_long marks[MARK_MAX], size;
u_int32_t entry;
void *ssym, *esym;
printf("\n");
printf(">> %s, Revision %s\n", bootprog_name, bootprog_rev);
/*
* Get the boot arguments from Openfirmware
*/
if ((chosen = OF_finddevice("/chosen")) == -1 ||
OF_getprop(chosen, "bootpath", bootdev, sizeof bootdev) < 0 ||
OF_getprop(chosen, "bootargs", bootline, sizeof bootline) < 0) {
printf("Invalid Openfirmware environment\n");
OF_exit();
}
prom2boot(bootdev);
parseargs(bootline, &boothowto);
DPRINTF("bootline=%s\n", bootline);
/*
* Per the ARM OpenFirmware bindings, the firmware must
* allocate and map at least 6MB of physical memory starting
* at VA 0xf0000000. We have been loaded at 0xf0000000,
* and the memory after us has been unmapped and freed.
* We expect to load the kernel at 0xf0100000, so we will
* allocate 5MB of virtual memory starting there, and
* unmap/free what we don't use.
*/
startbuf = OF_claim((void *) 0xf0100000, (5 * 1024 * 1024), 0);
if (startbuf != (void *) 0xf0100000) {
printf("Unable to claim buffer for kernel\n");
OF_exit();
}
endbuf = startbuf + (5 * 1024 * 1024);
for (;;) {
int i;
if (boothowto & RB_ASKNAME) {
printf("Boot: ");
gets(bootline);
parseargs(bootline, &boothowto);
}
if (bootline[0]) {
kernels[0] = bootline;
kernels[1] = NULL;
}
for (i = 0; kernels[i]; i++) {
DPRINTF("Trying %s\n", kernels[i]);
marks[MARK_START] = 0xf0100000;
if (loadfile(kernels[i], marks, LOAD_KERNEL) >= 0)
goto loaded;
}
boothowto |= RB_ASKNAME;
}
loaded:
/*
* Okay, kernel is loaded, free the extra memory at the end.
* Round to the ARM OpenFirmare page size (4k).
*/
cp = (char *) ((marks[MARK_END] + 0xfff) & ~0xfff);
size = (u_long) (endbuf - cp);
if (size)
OF_release(cp, size);
#ifdef __notyet__
OF_setprop(chosen, "bootpath", opened_name, strlen(opened_name) + 1);
cp = bootline;
#else
strcpy(bootline, opened_name);
cp = bootline + strlen(bootline);
*cp++ = ' ';
#endif
*cp = '-';
if (boothowto & RB_ASKNAME)
*++cp = 'a';
if (boothowto & RB_SINGLE)
*++cp = 's';
if (boothowto & RB_KDB)
*++cp = 'd';
if (*cp == '-')
#ifdef __notyet__
*cp = 0;
#else
*--cp = 0;
#endif
else
__dead void
_rtt(void)
{
OF_exit();
}