35 lines
775 B
C
35 lines
775 B
C
/*
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* Copyright (c) 2019 LuoZhongYao
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <zephyr/kernel.h>
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#include <zephyr/device.h>
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#include <zephyr/init.h>
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#include <zephyr/arch/common/semihost.h>
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extern void __stdout_hook_install(int (*fn)(int));
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int arch_printk_char_out(int _c)
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{
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semihost_poll_out((char)_c);
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return 0;
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}
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static int semihost_console_init(const struct device *dev)
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{
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ARG_UNUSED(dev);
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/*
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* The printk output callback is arch_printk_char_out by default and
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* is installed at link time. That makes printk() usable very early.
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*
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* We still need to install the stdout callback manually at run time.
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*/
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__stdout_hook_install(arch_printk_char_out);
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return 0;
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}
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SYS_INIT(semihost_console_init, PRE_KERNEL_1, CONFIG_CONSOLE_INIT_PRIORITY);
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