| 1 | // SPDX-License-Identifier: GPL-2.0 |
|---|---|
| 2 | /* |
| 3 | * Copyright (C) 2012 ARM Ltd. |
| 4 | * Author: Marc Zyngier <marc.zyngier@arm.com> |
| 5 | * |
| 6 | * Adapted for ARM and earlycon: |
| 7 | * Copyright (C) 2014 Linaro Ltd. |
| 8 | * Author: Rob Herring <robh@kernel.org> |
| 9 | */ |
| 10 | #include <linux/kernel.h> |
| 11 | #include <linux/console.h> |
| 12 | #include <linux/init.h> |
| 13 | #include <linux/serial_core.h> |
| 14 | #include <asm/semihost.h> |
| 15 | |
| 16 | static void smh_write(struct console *con, const char *s, unsigned n) |
| 17 | { |
| 18 | struct earlycon_device *dev = con->data; |
| 19 | uart_console_write(port: &dev->port, s, count: n, putchar: smh_putc); |
| 20 | } |
| 21 | |
| 22 | static int |
| 23 | __init early_smh_setup(struct earlycon_device *device, const char *opt) |
| 24 | { |
| 25 | device->con->write = smh_write; |
| 26 | return 0; |
| 27 | } |
| 28 | EARLYCON_DECLARE(smh, early_smh_setup); |
| 29 |