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https://github.com/edk2-porting/linux-next.git
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926e6940f5
Values will need to be byte-swapped when calling prom (big endian) from a little endian boot wrapper. Signed-off-by: Cédric Le Goater <clg@fr.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
48 lines
1.0 KiB
C
48 lines
1.0 KiB
C
/*
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* OF console routines
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*
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* Copyright (C) Paul Mackerras 1997.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*/
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#include <stddef.h>
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#include "types.h"
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#include "elf.h"
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#include "string.h"
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#include "stdio.h"
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#include "page.h"
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#include "ops.h"
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#include "of.h"
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static unsigned int of_stdout_handle;
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static int of_console_open(void)
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{
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void *devp;
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if (((devp = of_finddevice("/chosen")) != NULL)
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&& (of_getprop(devp, "stdout", &of_stdout_handle,
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sizeof(of_stdout_handle))
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== sizeof(of_stdout_handle))) {
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of_stdout_handle = be32_to_cpu(of_stdout_handle);
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return 0;
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}
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return -1;
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}
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static void of_console_write(const char *buf, int len)
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{
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of_call_prom("write", 3, 1, of_stdout_handle, buf, len);
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}
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void of_console_init(void)
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{
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console_ops.open = of_console_open;
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console_ops.write = of_console_write;
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}
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