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/*-
* Copyright (c) 2000 Benno Rice <benno@jeamland.net>
* Copyright (c) 2000 Stephane Potvin <sepotvin@videotron.ca>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <stand.h>
#include "openfirm.h"
#include "libofw.h"
#include "bootstrap.h"
#include <machine/psl.h>
struct arch_switch archsw; /* MI/MD interface boundary */
extern char end[];
uint32_t acells, scells;
static char bootargs[128];
#define HEAP_SIZE 0x800000
static char heap[HEAP_SIZE]; // In BSS, so uses no space
#define OF_puts(fd, text) OF_write(fd, text, strlen(text))
static __inline register_t
mfmsr(void)
{
register_t value;
__asm __volatile ("mfmsr %0" : "=r"(value));
return (value);
}
void
init_heap(void)
{
bzero(heap, HEAP_SIZE);
setheap(heap, (void *)((int)heap + HEAP_SIZE));
}
uint64_t
memsize(void)
{
phandle_t memoryp;
cell_t reg[24];
int i, sz;
uint64_t memsz;
memsz = 0;
memoryp = OF_instance_to_package(memory);
sz = OF_getprop(memoryp, "reg", ®, sizeof(reg));
sz /= sizeof(reg[0]);
for (i = 0; i < sz; i += (acells + scells)) {
if (scells > 1)
memsz += (uint64_t)reg[i + acells] << 32;
memsz += reg[i + acells + scells - 1];
}
return (memsz);
}
#ifdef CAS
extern int ppc64_cas(void);
static int
ppc64_autoload(void)
{
const char *cas;
if ((cas = getenv("cas")) && cas[0] == '1')
if (ppc64_cas() != 0)
return (-1);
return (ofw_autoload());
}
#endif
int
main(int (*openfirm)(void *))
{
phandle_t root;
int i;
char bootpath[64];
char *ch;
int bargc;
char **bargv;
/*
* Initialise 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%s", bootprog_info);
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 */
/*
* On non-Apple hardware, where it works reliably, pass flattened
* device trees to the kernel by default instead of OF CI pointers.
* Apple hardware is the only virtual-mode OF implementation in
* existence, so far as I am aware, so use that as a flag.
*/
if (!(mfmsr() & PSL_DR))
setenv("usefdt", "1", 1);
archsw.arch_getdev = ofw_getdev;
archsw.arch_copyin = ofw_copyin;
archsw.arch_copyout = ofw_copyout;
archsw.arch_readin = ofw_readin;
#ifdef CAS
setenv("cas", "1", 0);
archsw.arch_autoload = ppc64_autoload;
#else
archsw.arch_autoload = ofw_autoload;
#endif
interact(); /* doesn't return */
OF_exit();
return 0;
}
COMMAND_SET(halt, "halt", "halt the system", command_halt);
static int
command_halt(int argc, char *argv[])
{
OF_exit();
return (CMD_OK);
}
COMMAND_SET(memmap, "memmap", "print memory map", command_memmap);
int
command_memmap(int argc, char **argv)
{
ofw_memmap(acells);
return (CMD_OK);
}
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