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46 lines
1012 B
46 lines
1012 B
// SPDX-License-Identifier: GPL-2.0 |
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/* console.c: Routines that deal with sending and receiving IO |
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* to/from the current console device using the PROM. |
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* |
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* Copyright (C) 1995 David S. Miller ([email protected]) |
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* Copyright (C) 1996,1997 Jakub Jelinek ([email protected]) |
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*/ |
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#include <linux/types.h> |
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#include <linux/kernel.h> |
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#include <linux/sched.h> |
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#include <asm/openprom.h> |
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#include <asm/oplib.h> |
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#include <linux/string.h> |
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static int __prom_console_write_buf(const char *buf, int len) |
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{ |
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unsigned long args[7]; |
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int ret; |
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args[0] = (unsigned long) "write"; |
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args[1] = 3; |
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args[2] = 1; |
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args[3] = (unsigned int) prom_stdout; |
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args[4] = (unsigned long) buf; |
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args[5] = (unsigned int) len; |
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args[6] = (unsigned long) -1; |
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p1275_cmd_direct(args); |
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ret = (int) args[6]; |
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if (ret < 0) |
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return -1; |
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return ret; |
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} |
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void prom_console_write_buf(const char *buf, int len) |
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{ |
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while (len) { |
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int n = __prom_console_write_buf(buf, len); |
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if (n < 0) |
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continue; |
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len -= n; |
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buf += len; |
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} |
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}
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