/* * IP32 basic setup * * This file is subject to the terms and conditions of the GNU General Public * License. See the file "COPYING" in the main directory of this archive * for more details. * * Copyright (C) 2000 Harald Koerfgen * Copyright (C) 2002, 2003, 2005 Ilya A. Volynets * Copyright (C) 2006 Ralf Baechle <ralf@linux-mips.org> */ #include <linux/console.h> #include <linux/init.h> #include <linux/interrupt.h> #include <linux/param.h> #include <linux/sched.h> #include <asm/bootinfo.h> #include <asm/mipsregs.h> #include <asm/mmu_context.h> #include <asm/sgialib.h> #include <asm/time.h> #include <asm/traps.h> #include <asm/io.h> #include <asm/ip32/crime.h> #include <asm/ip32/mace.h> #include <asm/ip32/ip32_ints.h> extern void ip32_be_init(void); extern void crime_init(void); #ifdef CONFIG_SGI_O2MACE_ETH /* * This is taken care of in here 'cause they say using Arc later on is * problematic */ extern char o2meth_eaddr[8]; static inline unsigned char str2hexnum(unsigned char c) { if (c >= '0' && c <= '9') return c - '0'; if (c >= 'a' && c <= 'f') return c - 'a' + 10; return 0; /* foo */ } static inline void str2eaddr(unsigned char *ea, unsigned char *str) { int i; for (i = 0; i < 6; i++) { unsigned char num; if(*str == ':') str++; num = str2hexnum(*str++) << 4; num |= (str2hexnum(*str++)); ea[i] = num; } } #endif /* An arbitrary time; this can be decreased if reliability looks good */ #define WAIT_MS 10 void __init plat_time_init(void) { printk(KERN_INFO "Calibrating system timer... "); write_c0_count(0); crime->timer = 0; while (crime->timer < CRIME_MASTER_FREQ * WAIT_MS / 1000) ; mips_hpt_frequency = read_c0_count() * 1000 / WAIT_MS; printk("%d MHz CPU detected\n", mips_hpt_frequency * 2 / 1000000); } void __init plat_mem_setup(void) { board_be_init = ip32_be_init; #ifdef CONFIG_SGI_O2MACE_ETH { char *mac = ArcGetEnvironmentVariable("eaddr"); str2eaddr(o2meth_eaddr, mac); } #endif #if defined(CONFIG_SERIAL_CORE_CONSOLE) { char* con = ArcGetEnvironmentVariable("console"); if (con && *con == 'd') { static char options[8] __initdata; char *baud = ArcGetEnvironmentVariable("dbaud"); if (baud) strcpy(options, baud); add_preferred_console("ttyS", *(con + 1) == '2' ? 1 : 0, baud ? options : NULL); } } #endif }