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31 lines
710 B
31 lines
710 B
// SPDX-License-Identifier: GPL-2.0 |
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/* |
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* RISC-V SBI based earlycon |
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* |
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* Copyright (C) 2018 Anup Patel <[email protected]> |
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*/ |
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#include <linux/kernel.h> |
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#include <linux/console.h> |
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#include <linux/init.h> |
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#include <linux/serial_core.h> |
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#include <asm/sbi.h> |
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static void sbi_putc(struct uart_port *port, int c) |
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{ |
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sbi_console_putchar(c); |
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} |
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static void sbi_console_write(struct console *con, |
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const char *s, unsigned n) |
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{ |
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struct earlycon_device *dev = con->data; |
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uart_console_write(&dev->port, s, n, sbi_putc); |
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} |
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static int __init early_sbi_setup(struct earlycon_device *device, |
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const char *opt) |
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{ |
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device->con->write = sbi_console_write; |
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return 0; |
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} |
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EARLYCON_DECLARE(sbi, early_sbi_setup);
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