int
OF_package_to_path(int phandle, char *buf, int buflen)
{
static struct {
char *name;
int nargs;
int nreturns;
int phandle;
char *buf;
int buflen;
int length;
} args = {
"package-to-path",
3,
1,
};
ofw_stack();
if (buflen > PAGE_SIZE)
return -1;
args.phandle = phandle;
args.buf = OF_buf;
args.buflen = buflen;
if (openfirmware(&args) < 0)
return -1;
if (args.length > 0)
ofbcopy(OF_buf, buf, args.length);
return args.length;
}
int
OF_open(char *dname)
{
static struct {
char *name;
int nargs;
int nreturns;
char *dname;
int handle;
} args = {
"open",
1,
1,
};
int l;
ofw_stack();
if ((l = strlen(dname)) >= PAGE_SIZE)
return -1;
ofbcopy(dname, OF_buf, l + 1);
args.dname = OF_buf;
if (openfirmware(&args) == -1)
return -1;
return args.handle;
}
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,
};
int l, act = 0;
ofw_stack();
args.ihandle = handle;
args.addr = OF_buf;
for (; len > 0; len -= l, addr += l) {
l = min(PAGE_SIZE, len);
ofbcopy(addr, OF_buf, l);
args.len = l;
if (openfirmware(&args) == -1)
return -1;
l = args.actual;
act += l;
}
return act;
}
int
OF_write(int handle, const void *addr, int len)
{
static struct {
const char *name;
int nargs;
int nreturns;
int ihandle;
void *addr;
int len;
int actual;
} args = {
"write",
3,
1,
};
int l, act = 0;
const char *p = addr;
ofw_stack();
args.ihandle = handle;
args.addr = OF_buf;
for (; len > 0; len -= l, p += l) {
l = min(PAGE_SIZE, len);
ofbcopy(p, OF_buf, l);
args.len = l;
args.actual = l; /* work around a PIBS bug */
if (openfirmware(&args) == -1)
return -1;
l = args.actual;
act += l;
}
return act;
}
int
OF_instance_to_path(int ihandle, char *buf, int buflen)
{
static struct {
const char *name;
int nargs;
int nreturns;
int ihandle;
char *buf;
int buflen;
int length;
} args = {
"instance-to-path",
3,
1,
};
if (buflen > PAGE_SIZE)
return -1;
args.ihandle = ihandle;
args.buf = OF_buf;
args.buflen = buflen;
if (openfirmware(&args) < 0)
return -1;
if (args.length > buflen)
args.length = buflen;
if (args.length > 0)
ofbcopy(OF_buf, buf, args.length);
return args.length;
}
int
OF_setprop(int handle, const char *prop, const void *buf, int buflen)
{
struct {
const char *name;
int nargs;
int nreturns;
int phandle;
const char *prop;
const void *buf;
int buflen;
int size;
} args = {
"setprop",
4,
1
};
ofw_stack();
if (buflen > NBPG)
return -1;
ofbcopy(buf, OF_buf, buflen);
args.phandle = handle;
args.prop = prop;
args.buf = OF_buf;
args.buflen = buflen;
if (openfirmware(&args) == -1)
return -1;
return args.size;
}
int
OF_getprop(int handle, const char *prop, void *buf, int buflen)
{
static struct {
const char *name;
int nargs;
int nreturns;
int phandle;
const char *prop;
void *buf;
int buflen;
int size;
} args = {
"getprop",
4,
1,
};
ofw_stack();
if (buflen > PAGE_SIZE)
return -1;
args.phandle = handle;
args.prop = prop;
args.buf = OF_buf;
args.buflen = buflen;
if (openfirmware(&args) == -1)
return -1;
if (args.size > buflen)
args.size = buflen;
if (args.size > 0)
ofbcopy(OF_buf, buf, args.size);
return args.size;
}
int
OF_interpret(const char *cmd, int nargs, int nreturns, ...)
{
va_list ap;
int i, len, status;
static struct {
const char *name;
uint32_t nargs;
uint32_t nreturns;
uint32_t slots[16];
} args = {
"interpret",
1,
2,
};
ofw_stack();
if (nreturns > 8)
return -1;
if ((len = strlen(cmd)) >= PAGE_SIZE)
return -1;
ofbcopy(cmd, OF_buf, len + 1);
i = 0;
args.slots[i] = (uint32_t)OF_buf;
args.nargs = nargs + 1;
args.nreturns = nreturns + 1;
va_start(ap, nreturns);
i++;
while (i < args.nargs) {
args.slots[i] = (uint32_t)va_arg(ap, uint32_t *);
i++;
}
if (openfirmware(&args) == -1)
return -1;
status = args.slots[i];
i++;
while (i < args.nargs + args.nreturns) {
*va_arg(ap, uint32_t *) = args.slots[i];
i++;
}
va_end(ap);
return status;
}
/*
* This assumes that character devices don't read in multiples of PAGE_SIZE.
*/
int
OF_read(int handle, void *addr, int len)
{
static struct {
const char *name;
int nargs;
int nreturns;
int ihandle;
void *addr;
int len;
int actual;
} args = {
"read",
3,
1,
};
int l, act = 0;
char *p = addr;
ofw_stack();
args.ihandle = handle;
args.addr = OF_buf;
for (; len > 0; len -= l, p += l) {
l = min(PAGE_SIZE, len);
args.len = l;
if (openfirmware(&args) == -1)
return -1;
if (args.actual > 0) {
ofbcopy(OF_buf, p, args.actual);
act += args.actual;
}
if (args.actual < l) {
if (act)
return act;
else
return args.actual;
}
}
return act;
}
void
OF_boot(const char *bootspec)
{
static struct {
const char *name;
int nargs;
int nreturns;
char *bootspec;
} args = {
"boot",
1,
0,
};
int l;
if ((l = strlen(bootspec)) >= PAGE_SIZE)
panic("OF_boot");
ofw_stack();
ofbcopy(bootspec, OF_buf, l + 1);
args.bootspec = OF_buf;
openfirmware(&args);
while (1); /* just in case */
}
