1 // SPDX-License-Identifier: GPL-2.0-only <<
2 /* 1 /*
3 * Copyright (C) 2011 Richard Weinberger <rich !! 2 * This file is subject to the terms and conditions of the GNU General Public
>> 3 * License. See the file "COPYING" in the main directory of this archive
>> 4 * for more details.
>> 5 *
>> 6 * Copyright (c) 2014 Finn Thain
4 */ 7 */
5 8
6 #include <linux/kernel.h> 9 #include <linux/kernel.h>
7 #include <linux/console.h> 10 #include <linux/console.h>
8 #include <linux/init.h> 11 #include <linux/init.h>
9 #include <os.h> !! 12 #include <linux/string.h>
>> 13 #include <asm/setup.h>
10 14
11 static void early_console_write(struct console !! 15
>> 16 #include "../mvme16x/mvme16x.h"
>> 17
>> 18 asmlinkage void __init debug_cons_nputs(const char *s, unsigned n);
>> 19
>> 20 static void __ref debug_cons_write(struct console *c,
>> 21 const char *s, unsigned n)
12 { 22 {
13 um_early_printk(s, n); !! 23 #if !(defined(CONFIG_SUN3) || defined(CONFIG_M68000) || \
>> 24 defined(CONFIG_COLDFIRE))
>> 25 if (MACH_IS_MVME16x)
>> 26 mvme16x_cons_write(c, s, n);
>> 27 else
>> 28 debug_cons_nputs(s, n);
>> 29 #endif
14 } 30 }
15 31
16 static struct console early_console_dev = { !! 32 static struct console early_console_instance = {
17 .name = "earlycon", !! 33 .name = "debug",
18 .write = early_console_write, !! 34 .write = debug_cons_write,
19 .flags = CON_BOOT, !! 35 .flags = CON_PRINTBUFFER | CON_BOOT,
20 .index = -1, !! 36 .index = -1
21 }; 37 };
22 38
23 static int __init setup_early_printk(char *buf 39 static int __init setup_early_printk(char *buf)
24 { 40 {
25 if (!early_console) { !! 41 if (early_console || buf)
26 early_console = &early_console !! 42 return 0;
27 register_console(&early_consol !! 43
28 } !! 44 early_console = &early_console_instance;
>> 45 register_console(early_console);
>> 46
29 return 0; 47 return 0;
30 } 48 }
31 <<
32 early_param("earlyprintk", setup_early_printk) 49 early_param("earlyprintk", setup_early_printk);
>> 50
>> 51 /*
>> 52 * debug_cons_nputs() defined in arch/m68k/kernel/head.S cannot be called
>> 53 * after init sections are discarded (for platforms that use it).
>> 54 */
>> 55 #if !(defined(CONFIG_SUN3) || defined(CONFIG_M68000) || \
>> 56 defined(CONFIG_COLDFIRE))
>> 57
>> 58 static int __init unregister_early_console(void)
>> 59 {
>> 60 if (!early_console || MACH_IS_MVME16x)
>> 61 return 0;
>> 62
>> 63 return unregister_console(early_console);
>> 64 }
>> 65 late_initcall(unregister_early_console);
>> 66
>> 67 #endif
33 68
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