arch/mips/mti-sead3/sead3-init.c

   1 /*
   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) 2012 MIPS Technologies, Inc.  All rights reserved.
   7  */
   8 #include <linux/init.h>
   9 #include <linux/io.h>
  10
  11 #include <asm/bootinfo.h>
  12 #include <asm/cacheflush.h>
  13 #include <asm/traps.h>
  14 #include <asm/mips-boards/generic.h>
  15 #include <asm/fw/fw.h>
  16
  17 extern char except_vec_nmi;
  18 extern char except_vec_ejtag_debug;
  19
  20 #ifdef CONFIG_SERIAL_8250_CONSOLE
  21 static void __init console_config(void)
  22 {
  23         char console_string[40];
  24         int baud = 0;
  25         char parity = '\0', bits = '\0', flow = '\0';
  26         char *s;
  27
  28         if ((strstr(fw_getcmdline(), "console=")) == NULL) {
  29                 s = fw_getenv("modetty0");
  30                 if (s) {
  31                         while (*s >= '0' && *s <= '9')
  32                                 baud = baud*10 + *s++ - '0';
  33                         if (*s == ',')
  34                                 s++;
  35                         if (*s)
  36                                 parity = *s++;
  37                         if (*s == ',')
  38                                 s++;
  39                         if (*s)
  40                                 bits = *s++;
  41                         if (*s == ',')
  42                                 s++;
  43                         if (*s == 'h')
  44                                 flow = 'r';
  45                 }
  46                 if (baud == 0)
  47                         baud = 38400;
  48                 if (parity != 'n' && parity != 'o' && parity != 'e')
  49                         parity = 'n';
  50                 if (bits != '7' && bits != '8')
  51                         bits = '8';
  52                 if (flow == '\0')
  53                         flow = 'r';
  54                 sprintf(console_string, " console=ttyS0,%d%c%c%c", baud,
  55                         parity, bits, flow);
  56                 strcat(fw_getcmdline(), console_string);
  57         }
  58 }
  59 #endif
  60
  61 static void __init mips_nmi_setup(void)
  62 {
  63         void *base;
  64
  65         base = cpu_has_veic ?
  66                 (void *)(CAC_BASE + 0xa80) :
  67                 (void *)(CAC_BASE + 0x380);
  68         memcpy(base, &except_vec_nmi, 0x80);
  69         flush_icache_range((unsigned long)base, (unsigned long)base + 0x80);
  70 }
  71
  72 static void __init mips_ejtag_setup(void)
  73 {
  74         void *base;
  75
  76         base = cpu_has_veic ?
  77                 (void *)(CAC_BASE + 0xa00) :
  78                 (void *)(CAC_BASE + 0x300);
  79         memcpy(base, &except_vec_ejtag_debug, 0x80);
  80         flush_icache_range((unsigned long)base, (unsigned long)base + 0x80);
  81 }
  82
  83 void __init prom_init(void)
  84 {
  85         board_nmi_handler_setup = mips_nmi_setup;
  86         board_ejtag_handler_setup = mips_ejtag_setup;
  87
  88         fw_init_cmdline();
  89 #ifdef CONFIG_EARLY_PRINTK
  90         if ((strstr(fw_getcmdline(), "console=ttyS0")) != NULL)
  91                 fw_init_early_console(0);
  92         else if ((strstr(fw_getcmdline(), "console=ttyS1")) != NULL)
  93                 fw_init_early_console(1);
  94 #endif
  95 #ifdef CONFIG_SERIAL_8250_CONSOLE
  96         if ((strstr(fw_getcmdline(), "console=")) == NULL)
  97                 strcat(fw_getcmdline(), " console=ttyS0,38400n8r");
  98         console_config();
  99 #endif
 100 }
 101
 102 void prom_free_prom_memory(void)
 103 {
 104 }