1*4882a593Smuzhiyun /* 2*4882a593Smuzhiyun * IP32 basic setup 3*4882a593Smuzhiyun * 4*4882a593Smuzhiyun * This file is subject to the terms and conditions of the GNU General Public 5*4882a593Smuzhiyun * License. See the file "COPYING" in the main directory of this archive 6*4882a593Smuzhiyun * for more details. 7*4882a593Smuzhiyun * 8*4882a593Smuzhiyun * Copyright (C) 2000 Harald Koerfgen 9*4882a593Smuzhiyun * Copyright (C) 2002, 2003, 2005 Ilya A. Volynets 10*4882a593Smuzhiyun * Copyright (C) 2006 Ralf Baechle <ralf@linux-mips.org> 11*4882a593Smuzhiyun */ 12*4882a593Smuzhiyun #include <linux/console.h> 13*4882a593Smuzhiyun #include <linux/init.h> 14*4882a593Smuzhiyun #include <linux/interrupt.h> 15*4882a593Smuzhiyun #include <linux/param.h> 16*4882a593Smuzhiyun #include <linux/sched.h> 17*4882a593Smuzhiyun 18*4882a593Smuzhiyun #include <asm/bootinfo.h> 19*4882a593Smuzhiyun #include <asm/mipsregs.h> 20*4882a593Smuzhiyun #include <asm/mmu_context.h> 21*4882a593Smuzhiyun #include <asm/sgialib.h> 22*4882a593Smuzhiyun #include <asm/time.h> 23*4882a593Smuzhiyun #include <asm/traps.h> 24*4882a593Smuzhiyun #include <asm/io.h> 25*4882a593Smuzhiyun #include <asm/ip32/crime.h> 26*4882a593Smuzhiyun #include <asm/ip32/mace.h> 27*4882a593Smuzhiyun #include <asm/ip32/ip32_ints.h> 28*4882a593Smuzhiyun 29*4882a593Smuzhiyun extern void ip32_be_init(void); 30*4882a593Smuzhiyun extern void crime_init(void); 31*4882a593Smuzhiyun 32*4882a593Smuzhiyun #ifdef CONFIG_SGI_O2MACE_ETH 33*4882a593Smuzhiyun /* 34*4882a593Smuzhiyun * This is taken care of in here 'cause they say using Arc later on is 35*4882a593Smuzhiyun * problematic 36*4882a593Smuzhiyun */ 37*4882a593Smuzhiyun extern char o2meth_eaddr[8]; str2hexnum(unsigned char c)38*4882a593Smuzhiyunstatic inline unsigned char str2hexnum(unsigned char c) 39*4882a593Smuzhiyun { 40*4882a593Smuzhiyun if (c >= '0' && c <= '9') 41*4882a593Smuzhiyun return c - '0'; 42*4882a593Smuzhiyun if (c >= 'a' && c <= 'f') 43*4882a593Smuzhiyun return c - 'a' + 10; 44*4882a593Smuzhiyun return 0; /* foo */ 45*4882a593Smuzhiyun } 46*4882a593Smuzhiyun str2eaddr(unsigned char * ea,unsigned char * str)47*4882a593Smuzhiyunstatic inline void str2eaddr(unsigned char *ea, unsigned char *str) 48*4882a593Smuzhiyun { 49*4882a593Smuzhiyun int i; 50*4882a593Smuzhiyun 51*4882a593Smuzhiyun for (i = 0; i < 6; i++) { 52*4882a593Smuzhiyun unsigned char num; 53*4882a593Smuzhiyun 54*4882a593Smuzhiyun if(*str == ':') 55*4882a593Smuzhiyun str++; 56*4882a593Smuzhiyun num = str2hexnum(*str++) << 4; 57*4882a593Smuzhiyun num |= (str2hexnum(*str++)); 58*4882a593Smuzhiyun ea[i] = num; 59*4882a593Smuzhiyun } 60*4882a593Smuzhiyun } 61*4882a593Smuzhiyun #endif 62*4882a593Smuzhiyun 63*4882a593Smuzhiyun /* An arbitrary time; this can be decreased if reliability looks good */ 64*4882a593Smuzhiyun #define WAIT_MS 10 65*4882a593Smuzhiyun plat_time_init(void)66*4882a593Smuzhiyunvoid __init plat_time_init(void) 67*4882a593Smuzhiyun { 68*4882a593Smuzhiyun printk(KERN_INFO "Calibrating system timer... "); 69*4882a593Smuzhiyun write_c0_count(0); 70*4882a593Smuzhiyun crime->timer = 0; 71*4882a593Smuzhiyun while (crime->timer < CRIME_MASTER_FREQ * WAIT_MS / 1000) ; 72*4882a593Smuzhiyun mips_hpt_frequency = read_c0_count() * 1000 / WAIT_MS; 73*4882a593Smuzhiyun printk("%d MHz CPU detected\n", mips_hpt_frequency * 2 / 1000000); 74*4882a593Smuzhiyun } 75*4882a593Smuzhiyun plat_mem_setup(void)76*4882a593Smuzhiyunvoid __init plat_mem_setup(void) 77*4882a593Smuzhiyun { 78*4882a593Smuzhiyun board_be_init = ip32_be_init; 79*4882a593Smuzhiyun 80*4882a593Smuzhiyun #ifdef CONFIG_SGI_O2MACE_ETH 81*4882a593Smuzhiyun { 82*4882a593Smuzhiyun char *mac = ArcGetEnvironmentVariable("eaddr"); 83*4882a593Smuzhiyun str2eaddr(o2meth_eaddr, mac); 84*4882a593Smuzhiyun } 85*4882a593Smuzhiyun #endif 86*4882a593Smuzhiyun 87*4882a593Smuzhiyun #if defined(CONFIG_SERIAL_CORE_CONSOLE) 88*4882a593Smuzhiyun { 89*4882a593Smuzhiyun char* con = ArcGetEnvironmentVariable("console"); 90*4882a593Smuzhiyun if (con && *con == 'd') { 91*4882a593Smuzhiyun static char options[8] __initdata; 92*4882a593Smuzhiyun char *baud = ArcGetEnvironmentVariable("dbaud"); 93*4882a593Smuzhiyun if (baud) 94*4882a593Smuzhiyun strcpy(options, baud); 95*4882a593Smuzhiyun add_preferred_console("ttyS", *(con + 1) == '2' ? 1 : 0, 96*4882a593Smuzhiyun baud ? options : NULL); 97*4882a593Smuzhiyun } 98*4882a593Smuzhiyun } 99*4882a593Smuzhiyun #endif 100*4882a593Smuzhiyun } 101