// SPDX-License-Identifier: GPL-2.0 /* console.c: Routines that deal with sending and receiving IO * to/from the current console device using the PROM. * * Copyright (C) 1995 David S. Miller (davem@davemloft.net) * Copyright (C) 1996,1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz) */ #include <linux/types.h> #include <linux/kernel.h> #include <linux/sched.h> #include <asm/openprom.h> #include <asm/oplib.h> #include <linux/string.h> static int __prom_console_write_buf(const char *buf, int len) { unsigned long args[7]; int ret; args[0] = (unsigned long) "write"; args[1] = 3; args[2] = 1; args[3] = (unsigned int) prom_stdout; args[4] = (unsigned long) buf; args[5] = (unsigned int) len; args[6] = (unsigned long) -1; p1275_cmd_direct(args); ret = (int) args[6]; if (ret < 0) return -1; return ret; } void prom_console_write_buf(const char *buf, int len) { while (len) { int n = __prom_console_write_buf(buf, len); if (n < 0) continue; len -= n; buf += len; } }