#include <macppc/stand/openfirm.h>
#include <dev/cons.h>
#include "libsa.h"
int main(void);
#define ENABLE_DECREMENTER_WORKAROUND
void bat_init(void);
void patch_dec_intr(void);
__dead void exit(void);
static int (*openfirmware)(void *);
static void setup(void);
asm (".text; .globl _entry; _entry: .long _start,0,0");
asm(" .text \n"
" .globl bat_init \n"
"bat_init: \n"
" \n"
" mfmsr 8 \n"
" li 0,0 \n"
" mtmsr 0 \n"
" isync \n"
" \n"
" mtibatu 0,0 \n"
" mtibatu 1,0 \n"
" mtibatu 2,0 \n"
" mtibatu 3,0 \n"
" mtdbatu 0,0 \n"
" mtdbatu 1,0 \n"
" mtdbatu 2,0 \n"
" mtdbatu 3,0 \n"
" \n"
" li 9,0x12 \n"
" mtibatl 0,9 \n"
" mtdbatl 0,9 \n"
" li 9,0x1ffe \n"
" mtibatu 0,9 \n"
" mtdbatu 0,9 \n"
" isync \n"
" \n"
" mtmsr 8 \n"
" isync \n"
" blr \n");
#ifdef XCOFF_GLUE
static int stack[8192/4 + 4] __attribute__((__used__));
#endif
__dead void
_start(void *vpd, int res, int (*openfirm)(void *), char *arg, int argl)
{
extern char etext[];
#ifdef XCOFF_GLUE
asm(
"sync \n"
"isync \n"
"lis %r1,stack@ha \n"
"addi %r1,%r1,stack@l \n"
"addi %r1,%r1,8192 \n");
#endif
syncicache((void *)RELOC, etext - (char *)RELOC);
bat_init();
openfirmware = openfirm;
#ifdef ENABLE_DECREMENTER_WORKAROUND
patch_dec_intr();
#endif
setup();
main();
exit();
}
#ifdef ENABLE_DECREMENTER_WORKAROUND
void handle_decr_intr();
__asm ( " .globl handle_decr_intr\n"
"handle_decr_intr:\n"
" rfi\n");
void
patch_dec_intr()
{
int time;
unsigned int *decr_intr = (unsigned int *)0x900;
unsigned int br_instr;
time = 0x40000000;
asm("mtdec %0" :: "r"(time));
br_instr = (18 << 23) | (unsigned int)handle_decr_intr;
*decr_intr = br_instr;
}
#endif
__dead void
_rtt()
{
static struct {
char *name;
int nargs;
int nreturns;
} args = {
"exit",
0,
0
};
openfirmware(&args);
while (1);
}
int
OF_finddevice(char *name)
{
static struct {
char *name;
int nargs;
int nreturns;
char *device;
int phandle;
} args = {
"finddevice",
1,
1,
};
args.device = name;
if (openfirmware(&args) == -1)
return -1;
return args.phandle;
}
int
OF_instance_to_package(int ihandle)
{
static struct {
char *name;
int nargs;
int nreturns;
int ihandle;
int phandle;
} args = {
"instance-to-package",
1,
1,
};
args.ihandle = ihandle;
if (openfirmware(&args) == -1)
return -1;
return args.phandle;
}
int
OF_getprop(int handle, char *prop, void *buf, int buflen)
{
static struct {
char *name;
int nargs;
int nreturns;
int phandle;
char *prop;
void *buf;
int buflen;
int size;
} args = {
"getprop",
4,
1,
};
args.phandle = handle;
args.prop = prop;
args.buf = buf;
args.buflen = buflen;
if (openfirmware(&args) == -1)
return -1;
return args.size;
}
int
OF_open(char *dname)
{
static struct {
char *name;
int nargs;
int nreturns;
char *dname;
int handle;
} args = {
"open",
1,
1,
};
args.dname = dname;
if (openfirmware(&args) == -1)
return -1;
return args.handle;
}
void
OF_close(int handle)
{
static struct {
char *name;
int nargs;
int nreturns;
int handle;
} args = {
"close",
1,
0,
};
args.handle = handle;
openfirmware(&args);
}
int
OF_write(int handle, void *addr, int len)
{
static struct {
char *name;
int nargs;
int nreturns;
int ihandle;
void *addr;
int len;
int actual;
} args = {
"write",
3,
1,
};
args.ihandle = handle;
args.addr = addr;
args.len = len;
if (openfirmware(&args) == -1)
return -1;
return args.actual;
}
int
OF_read(int handle, void *addr, int len)
{
static struct {
char *name;
int nargs;
int nreturns;
int ihandle;
void *addr;
int len;
int actual;
} args = {
"read",
3,
1,
};
args.ihandle = handle;
args.addr = addr;
args.len = len;
if (openfirmware(&args) == -1)
return -1;
return args.actual;
}
int
OF_seek(int handle, u_quad_t pos)
{
static struct {
char *name;
int nargs;
int nreturns;
int handle;
int poshi;
int poslo;
int status;
} args = {
"seek",
3,
1,
};
args.handle = handle;
args.poshi = (int)(pos >> 32);
args.poslo = (int)pos;
if (openfirmware(&args) == -1)
return -1;
return args.status;
}
void *
OF_claim(void *virt, u_int size, u_int align)
{
static struct {
char *name;
int nargs;
int nreturns;
void *virt;
u_int size;
u_int align;
void *baseaddr;
} args = {
"claim",
3,
1,
};
args.virt = virt;
args.size = size;
args.align = align;
if (openfirmware(&args) == -1)
return (void *)-1;
if (virt != 0)
return virt;
return args.baseaddr;
}
void
OF_release(void *virt, u_int size)
{
static struct {
char *name;
int nargs;
int nreturns;
void *virt;
u_int size;
} args = {
"release",
2,
0,
};
args.virt = virt;
args.size = size;
openfirmware(&args);
}
int
OF_milliseconds()
{
static struct {
char *name;
int nargs;
int nreturns;
int ms;
} args = {
"milliseconds",
0,
1,
};
openfirmware(&args);
return args.ms;
}
#ifdef __notyet__
void
OF_chain(void *virt, u_int size, void (*entry)(), void *arg, u_int len)
{
static struct {
char *name;
int nargs;
int nreturns;
void *virt;
u_int size;
void (*entry)();
void *arg;
u_int len;
} args = {
"chain",
5,
0,
};
args.virt = virt;
args.size = size;
args.entry = entry;
args.arg = arg;
args.len = len;
openfirmware(&args);
}
#else
void
OF_chain(void *virt, u_int size, void (*entry)(), void *arg, u_int len)
{
entry(0, 0, openfirmware, arg, len);
}
#endif
int
OF_call_method(char *method, int ihandle, int nargs, int nreturns, ...)
{
va_list ap;
static struct {
char *name;
int nargs;
int nreturns;
char *method;
int ihandle;
int args_n_results[12];
} args = {
"call-method",
2,
1,
};
int *ip, n;
if (nargs > 6)
return -1;
args.nargs = nargs + 2;
args.nreturns = nreturns + 1;
args.method = method;
args.ihandle = ihandle;
va_start(ap, nreturns);
for (ip = args.args_n_results + (n = nargs); --n >= 0;)
*--ip = va_arg(ap, int);
if (openfirmware(&args) == -1) {
va_end(ap);
return -1;
}
if (args.args_n_results[nargs]) {
va_end(ap);
return args.args_n_results[nargs];
}
for (ip = args.args_n_results + nargs + (n = args.nreturns); --n > 0;)
*va_arg(ap, int *) = *--ip;
va_end(ap);
return 0;
}
static int stdin;
static int stdout;
static void
setup()
{
int chosen;
if ((chosen = OF_finddevice("/chosen")) == -1)
_rtt();
if (OF_getprop(chosen, "stdin", &stdin, sizeof(stdin)) != sizeof(stdin)
|| OF_getprop(chosen, "stdout", &stdout, sizeof(stdout)) !=
sizeof(stdout))
_rtt();
if (stdout == 0) {
stdout = OF_open("screen");
}
}
void
putchar(int c)
{
char ch = c;
if (c == '\177') {
ch = '\b';
OF_write(stdout, &ch, 1);
ch = ' ';
OF_write(stdout, &ch, 1);
ch = '\b';
}
if (c == '\n')
putchar('\r');
OF_write(stdout, &ch, 1);
}
void
ofc_probe(struct consdev *cn)
{
cn->cn_pri = CN_LOWPRI;
cn->cn_dev = makedev(0,0);
}
void
ofc_init(struct consdev *cn)
{
}
char buffered_char;
int
ofc_getc(dev_t dev)
{
u_int8_t ch;
int l;
if (dev & 0x80) {
if (buffered_char != 0)
return 1;
l = OF_read(stdin, &ch, 1);
if (l == 1) {
buffered_char = ch;
return 1;
}
return 0;
}
if (buffered_char != 0) {
ch = buffered_char;
buffered_char = 0;
return ch;
}
while ((l = OF_read(stdin, &ch, 1)) != 1)
if (l != -2 && l != 0)
return 0;
return ch;
}
void
ofc_putc(dev_t dev, int c)
{
char ch;
ch = 'a';
OF_write(stdout, &ch, 1);
ch = c;
if (c == '\177' && c == '\b') {
ch = 'A';
}
OF_write(stdout, &ch, 1);
}
void
machdep()
{
cninit();
}
