1 // SPDX-License-Identifier: GPL-2.0-or-later 1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /* 2 /*
3 * DECstation PROM-based early console su 3 * DECstation PROM-based early console support.
4 * 4 *
5 * Copyright (C) 2004, 2007 Maciej W. Ro 5 * Copyright (C) 2004, 2007 Maciej W. Rozycki
6 */ 6 */
7 #include <linux/console.h> 7 #include <linux/console.h>
8 #include <linux/init.h> 8 #include <linux/init.h>
9 #include <linux/kernel.h> 9 #include <linux/kernel.h>
10 #include <linux/string.h> 10 #include <linux/string.h>
11 11
12 #include <asm/dec/prom.h> 12 #include <asm/dec/prom.h>
13 13
14 static void __init prom_console_write(struct c 14 static void __init prom_console_write(struct console *con, const char *s,
15 unsigned 15 unsigned int c)
16 { 16 {
17 char buf[81]; 17 char buf[81];
18 unsigned int chunk = sizeof(buf) - 1; 18 unsigned int chunk = sizeof(buf) - 1;
19 19
20 while (c > 0) { 20 while (c > 0) {
21 if (chunk > c) 21 if (chunk > c)
22 chunk = c; 22 chunk = c;
23 memcpy(buf, s, chunk); 23 memcpy(buf, s, chunk);
24 buf[chunk] = '\0'; 24 buf[chunk] = '\0';
25 prom_printf("%s", buf); 25 prom_printf("%s", buf);
26 s += chunk; 26 s += chunk;
27 c -= chunk; 27 c -= chunk;
28 } 28 }
29 } 29 }
30 30
31 static struct console promcons __initdata = { 31 static struct console promcons __initdata = {
32 .name = "prom", 32 .name = "prom",
33 .write = prom_console_write, 33 .write = prom_console_write,
34 .flags = CON_BOOT | CON_PRINTBUFFER, 34 .flags = CON_BOOT | CON_PRINTBUFFER,
35 .index = -1, 35 .index = -1,
36 }; 36 };
37 37
38 void __init register_prom_console(void) 38 void __init register_prom_console(void)
39 { 39 {
40 register_console(&promcons); 40 register_console(&promcons);
41 } 41 }
42 42
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.