/*
* Get the package handle of the UART that's selected as the debug port.
* Since there's no place for this in the OF, we use the kernel environment
* variable "hw.uart.dbgport". Note however that the variable is not a
* list of attributes. It's single device name or alias, as known by
* the OF.
*/
static phandle_t
uart_cpu_getdev_dbgport(char *dev, size_t devsz)
{
char buf[sizeof("serial")];
phandle_t input;
if (!getenv_string("hw.uart.dbgport", dev, devsz))
return (-1);
if ((input = OF_finddevice(dev)) == -1)
return (-1);
if (OF_getprop(input, "device_type", buf, sizeof(buf)) == -1)
return (-1);
if (strcmp(buf, "serial") != 0)
return (-1);
return (input);
}
BIF_RETTYPE os_getenv_0(BIF_ALIST_0)
{
GETENV_STATE state;
char *cp;
Eterm* hp;
Eterm ret;
Eterm str;
init_getenv_state(&state);
ret = NIL;
while ((cp = getenv_string(&state)) != NULL) {
str = erts_convert_native_to_filename(BIF_P,(byte *)cp);
hp = HAlloc(BIF_P, 2);
ret = CONS(hp, str, ret);
}
fini_getenv_state(&state);
return ret;
}
Eterm
os_getenv_0(Process* p)
{
GETENV_STATE state;
char *cp;
Eterm* hp;
Eterm ret;
Eterm str;
int len;
init_getenv_state(&state);
ret = NIL;
while ((cp = getenv_string(&state)) != NULL) {
len = strlen(cp);
hp = HAlloc(p, len*2+2);
str = buf_to_intlist(&hp, cp, len, NIL);
ret = CONS(hp, str, ret);
}
fini_getenv_state(&state);
return ret;
}
int
uart_cpu_getdev(int devtype, struct uart_devinfo *di)
{
char buf[64];
struct uart_class *class;
phandle_t input, opts, chosen;
int error;
opts = OF_finddevice("/options");
chosen = OF_finddevice("/chosen");
switch (devtype) {
case UART_DEV_CONSOLE:
error = ENXIO;
if (chosen != -1 && error != 0)
error = ofw_get_uart_console(chosen, &input,
"stdout-path", NULL);
if (chosen != -1 && error != 0)
error = ofw_get_uart_console(chosen, &input,
"linux,stdout-path", NULL);
if (chosen != -1 && error != 0)
error = ofw_get_console_phandle_path(chosen, &input,
"stdout");
if (chosen != -1 && error != 0)
error = ofw_get_uart_console(chosen, &input,
"stdin-path", NULL);
if (chosen != -1 && error != 0)
error = ofw_get_console_phandle_path(chosen, &input,
"stdin");
if (opts != -1 && error != 0)
error = ofw_get_uart_console(opts, &input,
"input-device", "output-device");
if (opts != -1 && error != 0)
error = ofw_get_uart_console(opts, &input,
"input-device-1", "output-device-1");
if (error != 0) {
input = OF_finddevice("serial0"); /* Last ditch */
if (input == -1)
error = (ENXIO);
}
if (error != 0)
return (error);
break;
case UART_DEV_DBGPORT:
if (!getenv_string("hw.uart.dbgport", buf, sizeof(buf)))
return (ENXIO);
input = OF_finddevice(buf);
if (input == -1)
return (ENXIO);
break;
default:
return (EINVAL);
}
if (OF_getprop(input, "device_type", buf, sizeof(buf)) == -1)
return (ENXIO);
if (strcmp(buf, "serial") != 0)
return (ENXIO);
if (OF_getprop(input, "compatible", buf, sizeof(buf)) == -1)
return (ENXIO);
if (strncmp(buf, "chrp,es", 7) == 0) {
class = &uart_z8530_class;
di->bas.regshft = 4;
di->bas.chan = 1;
} else if (strcmp(buf,"ns16550") == 0 || strcmp(buf,"ns8250") == 0) {
