1 #include <linux/init.h> 2 #include <linux/errno.h> 3 #include <linux/console.h> 4 5 #include <asm/sibyte/board.h> 6 7 #include <asm/fw/cfe/cfe_api.h> 8 #include <asm/fw/cfe/cfe_error.h> 9 10 extern int cfe_cons_handle; 11 12 static void cfe_console_write(struct console *cons, const char *str, 13 unsigned int count) 14 { 15 int i, last, written; 16 17 for (i=0, last=0; i<count; i++) { 18 if (!str[i]) 19 /* XXXKW can/should this ever happen? */ 20 return; 21 if (str[i] == '\n') { 22 do { 23 written = cfe_write(cfe_cons_handle, &str[last], i-last); 24 if (written < 0) 25 ; 26 last += written; 27 } while (last < i); 28 while (cfe_write(cfe_cons_handle, "\r", 1) <= 0) 29 ; 30 } 31 } 32 if (last != count) { 33 do { 34 written = cfe_write(cfe_cons_handle, &str[last], count-last); 35 if (written < 0) 36 ; 37 last += written; 38 } while (last < count); 39 } 40 41 } 42 43 static int cfe_console_setup(struct console *cons, char *str) 44 { 45 char consdev[32]; 46 /* XXXKW think about interaction with 'console=' cmdline arg */ 47 /* If none of the console options are configured, the build will break. */ 48 if (cfe_getenv("BOOT_CONSOLE", consdev, 32) >= 0) { 49 #ifdef CONFIG_SERIAL_SB1250_DUART 50 if (!strcmp(consdev, "uart0")) { 51 setleds("u0cn"); 52 } else if (!strcmp(consdev, "uart1")) { 53 setleds("u1cn"); 54 } else 55 #endif 56 #ifdef CONFIG_VGA_CONSOLE 57 if (!strcmp(consdev, "pcconsole0")) { 58 setleds("pccn"); 59 } else 60 #endif 61 return -ENODEV; 62 } 63 return 0; 64 } 65 66 static struct console sb1250_cfe_cons = { 67 .name = "cfe", 68 .write = cfe_console_write, 69 .setup = cfe_console_setup, 70 .flags = CON_PRINTBUFFER, 71 .index = -1, 72 }; 73 74 static int __init sb1250_cfe_console_init(void) 75 { 76 register_console(&sb1250_cfe_cons); 77 return 0; 78 } 79 80 console_initcall(sb1250_cfe_console_init); 81