82 lines
1.4 KiB
C
82 lines
1.4 KiB
C
/*
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* Copyright (c) 2022 Intel Corporation
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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/**
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* @file
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* @brief EFI console driver
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*
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* @details EFI console driver.
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* Hooks into the printk and fputc (for printf) modules.
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*/
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#include <stdio.h>
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#include <zephyr/device.h>
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#include <zephyr/init.h>
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#include <zephyr/sys/printk.h>
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extern int efi_console_putchar(int c);
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#if defined(CONFIG_PRINTK) || defined(CONFIG_STDOUT_CONSOLE)
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/**
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*
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* @brief Output one character to EFI console
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*
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* Outputs both line feed and carriage return in the case of a '\n'.
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*
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* @param c Character to output
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*
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* @return The character passed as input.
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*/
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static int console_out(int c)
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{
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return efi_console_putchar(c);
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}
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#endif
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#if defined(CONFIG_STDOUT_CONSOLE)
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extern void __stdout_hook_install(int (*hook)(int));
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#endif
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#if defined(CONFIG_PRINTK)
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extern void __printk_hook_install(int (*fn)(int));
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#endif
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/**
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* @brief Install printk/stdout hook for EFI console output
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*/
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static void efi_console_hook_install(void)
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{
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#if defined(CONFIG_STDOUT_CONSOLE)
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__stdout_hook_install(console_out);
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#endif
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#if defined(CONFIG_PRINTK)
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__printk_hook_install(console_out);
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#endif
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}
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/**
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* @brief Initialize one EFI as the console port
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*
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* @return 0 if successful, otherwise failed.
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*/
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static int efi_console_init(void)
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{
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efi_console_hook_install();
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return 0;
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}
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/* EFI console initializes */
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SYS_INIT(efi_console_init,
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PRE_KERNEL_1,
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0);
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