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 */
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 */
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#include <arch/drivers/ofw.h>
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#include <arch/drivers/ofw.h>
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#include <stdarg.h>
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#include <stdarg.h>
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ihandle ofw_chosen;
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ihandle ofw_stdout;
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ofw_entry ofw;
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ofw_entry ofw;
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phandle ofw_chosen;
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ihandle ofw_stdout;
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void ofw_init(void)
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void ofw_init(void)
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{
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{
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    ofw_chosen = ofw_call("finddevice", 1, 1, "/chosen");
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    ofw_chosen = ofw_find_device("/chosen");
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    if (ofw_chosen == -1)
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    if (ofw_chosen == -1)
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        ofw_done();
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        ofw_done();
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    if (ofw_call("getprop", 4, 1, ofw_chosen, "stdout", &ofw_stdout, sizeof(ofw_stdout)) <= 0)
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    if (ofw_call("getprop", 4, 1, ofw_chosen, "stdout", &ofw_stdout, sizeof(ofw_stdout)) <= 0)
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        ofw_stdout = 0;
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        ofw_stdout = 0;
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}
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}
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int ofw_call(const char *service, const int nargs, const int nret, ...)
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int ofw_call(const char *service, const int nargs, const int nret, ...)
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{
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{
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    va_list list;
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    va_list list;
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    struct ofw_args_t args;
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    ofw_args_t args;
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    int i;
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    int i;
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    args.service = service;
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    args.service = service;
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    args.nargs = nargs;
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    args.nargs = nargs;
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    args.nret = nret;
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    args.nret = nret;
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void ofw_putchar(const char ch)
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void ofw_putchar(const char ch)
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{
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{
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    if (ofw_stdout == 0)
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    if (ofw_stdout == 0)
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        return;
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        return;
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    ofw_call("write", 3, 1, ofw_stdout, ch, 1);
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    ofw_call("write", 3, 1, ofw_stdout, &ch, 1);
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}
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phandle ofw_find_device(const char *name)
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{
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    return ofw_call("finddevice", 1, 1, name);
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}
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int ofw_get_property(const phandle device, const char *name, void *buf, const int buflen)
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{
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    return ofw_call("getprop", 4, 1, device, name, buf, buflen);
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}
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}
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void putchar(const char ch)
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void putchar(const char ch)
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{
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{
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    ofw_putchar(ch);
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    ofw_putchar(ch);