mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-07-06 11:16:15 +09:00
909878fd3f
Part of the mini Blackfin ABI with operating systems is that they can use 0x4f0-0x4f8 to pass log buffers to/from bootloaders. So add support to U-Boot for reading the log buffer. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
31 lines
539 B
C
31 lines
539 B
C
/*
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* functions for handling OS log buffer
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*
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* Copyright (c) 2009 Analog Devices Inc.
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*
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* Licensed under the 2-clause BSD.
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*/
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#include <common.h>
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#define OS_LOG_MAGIC 0xDEADBEEF
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#define OS_LOG_MAGIC_ADDR ((unsigned long *)0x4f0)
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#define OS_LOG_PTR_ADDR ((char **)0x4f4)
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bool bfin_os_log_check(void)
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{
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if (*OS_LOG_MAGIC_ADDR != OS_LOG_MAGIC)
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return false;
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*OS_LOG_MAGIC_ADDR = 0;
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return true;
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}
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void bfin_os_log_dump(void)
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{
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char *log = *OS_LOG_PTR_ADDR;
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while (*log) {
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puts(log);
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log += strlen(log) + 1;
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}
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}
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