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[/] [or1k/] [tags/] [before_ORP/] [uclinux/] [uClinux-2.0.x/] [arch/] [or32/] [kernel/] [setup.c] - Rev 1765
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/* * linux/arch/or32/kernel/setup.c * * Based on m86k */ /* * This file handles the architecture-dependent parts of system setup */ #include <linux/config.h> #include <linux/kernel.h> #include <linux/sched.h> #include <linux/delay.h> #include <linux/interrupt.h> #include <linux/fs.h> #include <linux/fb.h> #include <linux/console.h> #include <linux/genhd.h> #include <linux/errno.h> #include <linux/string.h> #include <linux/major.h> #include <asm/irq.h> #include <asm/machdep.h> #ifdef CONFIG_BLK_DEV_INITRD #include <linux/blk.h> #include <asm/pgtable.h> #endif extern void register_console(void (*proc)(const char *)); #ifdef CONFIG_CONSOLE extern struct consw *conswitchp; #ifdef CONFIG_FRAMEBUFFER extern struct consw fb_con; #endif #endif #ifdef CONFIG_BLK_DEV_INITRD extern unsigned long _initrd_start; extern unsigned long _initrd_end; #endif unsigned long rom_length; unsigned long memory_start; unsigned long memory_end; #ifdef CONFIG_CONSOLE char command_line[512] = "CONSOLE=/dev/tty MOUSE_TYPE=ps2 MOUSE_PORT=/dev/ttyS0"; #else char command_line[512] = "CONSOLE=/dev/ttyS0"; #endif char saved_command_line[512]; char console_device[16]; char console_default[] = "CONSOLE=/dev/tty"; /* setup some dummy routines */ static void dummy_waitbut(void) { } void (*mach_sched_init) (void (*handler)(int, void *, struct pt_regs *)) = NULL; void (*mach_tick)( void ) = NULL; /* machine dependent keyboard functions */ int (*mach_keyb_init) (void) = NULL; int (*mach_kbdrate) (struct kbd_repeat *) = NULL; void (*mach_kbd_leds) (unsigned int) = NULL; /* machine dependent irq functions */ void (*mach_init_IRQ) (void) = NULL; void (*(*mach_default_handler)[]) (int, void *, struct pt_regs *) = NULL; int (*mach_request_irq) (unsigned int, void (*)(int, void *, struct pt_regs *), unsigned long, const char *, void *); int (*mach_free_irq) (unsigned int, void *); void (*mach_enable_irq) (unsigned int) = NULL; void (*mach_disable_irq) (unsigned int) = NULL; int (*mach_get_irq_list) (char *) = NULL; int (*mach_process_int) (int, struct pt_regs *) = NULL; void (*mach_trap_init) (void); /* machine dependent timer functions */ unsigned long (*mach_gettimeoffset) (void) = NULL; void (*mach_gettod) (int*, int*, int*, int*, int*, int*) = NULL; int (*mach_hwclk) (int, struct hwclk_time*) = NULL; int (*mach_set_clock_mmss) (unsigned long) = NULL; void (*mach_mksound)( unsigned int count, unsigned int ticks ) = NULL; void (*mach_reset)( void ) = NULL; void (*waitbut)(void) = dummy_waitbut; void (*mach_debug_init)(void) = NULL; #ifdef CONFIG_OR32 #define CPU "OR32" #endif /* * Setup the console. There may be a console defined in * the command line arguments, so we look there first. If the * command line arguments don't exist then we default to the * first serial port. If we are going to use a console then * setup its device name and the UART for it. */ void setup_console(void) { char *sp, *cp; int i; extern void rs_console_init(void); extern void rs_console_print(const char *b); #ifdef CONFIG_SERIAL extern int rs_console_setup(char *arg); #endif /* Quickly check if any command line arguments for CONSOLE. */ for (sp = NULL, i = 0; (i < sizeof(command_line)-8); i++) { if (command_line[i] == 0) break; if (command_line[i] == 'C') { if (!strncmp(&command_line[i], "CONSOLE=", 8)) { sp = &command_line[i + 8]; break; } } } #if 0 /* If no CONSOLE defined then default one */ if (sp == NULL) { strcpy(command_line, console_default); sp = command_line + 8; } #endif /* If console specified then copy it into name buffer */ for (cp = sp, i = 0; (i < (sizeof(console_device) - 1)); i++) { if ((*sp == 0) || (*sp == ' ') || (*sp == ',')) break; console_device[i] = *sp++; } console_device[i] = 0; #ifdef CONFIG_SERIAL /* If a serial console then init it */ if (rs_console_setup(cp)) { rs_console_init(); register_console(rs_console_print); } #endif } #if defined( CONFIG_GEN) && defined( CONFIG_OR32 ) #define CAT_ROMARRAY #endif void setup_arch(char **cmdline_p, unsigned long * memory_start_p, unsigned long * memory_end_p) { extern int _stext, _etext; extern int _sdata, _edata; extern int _sbss, _ebss, _end; extern int _ramstart, _ramend; #ifdef CAT_ROMARRAY extern int __data_rom_start; extern int __data_start; #endif memory_start = (unsigned long)&_end; memory_end = (unsigned long)&_ramend - 4096; /* <- stack area */ config_BSP(&command_line[0], sizeof(command_line)); setup_console(); printk("\nOpenRisc 1000 support (C) www.opencores.org\n"); printk("\r\n\nuClinux/" CPU "\n"); printk("Flat model support (C) 1998,1999 Kenneth Albanowski, D. Jeff Dionne\n"); #ifdef DEBUG printk("KERNEL -> TEXT=0x%06x-0x%06x DATA=0x%06x-0x%06x " "BSS=0x%06x-0x%06x\n", (int) &_stext, (int) &_etext, (int) &_sdata, (int) &_edata, (int) &_sbss, (int) &_ebss); printk("KERNEL -> ROMFS=0x%06x-0x%06x MEM=0x%06x-0x%06x " "STACK=0x%06x-0x%06x\n", (int) &_ebss, (int) memory_start, (int) memory_start, (int) memory_end, (int) memory_end, (int) &_ramend); #endif init_task.mm->start_code = (unsigned long) &_stext; init_task.mm->end_code = (unsigned long) &_etext; init_task.mm->end_data = (unsigned long) &_edata; init_task.mm->brk = (unsigned long) &_end; ROOT_DEV = MKDEV(RAMDISK_MAJOR,0); /* Keep a copy of command line */ *cmdline_p = &command_line[0]; memcpy(saved_command_line, command_line, sizeof(saved_command_line)); saved_command_line[sizeof(saved_command_line)-1] = 0; #ifdef DEBUG if (strlen(*cmdline_p)) printk("Command line: '%s'\n", *cmdline_p); else printk("No Command line passed\n"); #endif *memory_start_p = memory_start; *memory_end_p = memory_end; /*rom_length = (unsigned long)&_flashend - (unsigned long)&_romvec;*/ #ifdef CONFIG_BLK_DEV_INITRD initrd_start = (unsigned long)&_initrd_start; initrd_end = (unsigned long)&_initrd_end; #endif #ifdef CONFIG_CONSOLE #ifdef CONFIG_FRAMEBUFFER conswitchp = &fb_con; #else conswitchp = 0; #endif #endif #ifdef DEBUG printk("Done setup_arch\n"); #endif } int get_cpuinfo(char * buffer) { char *cpu, *mmu, *fpu; u_long clockfreq, clockfactor; cpu = CPU; mmu = "none"; fpu = "none"; clockfactor = 16; clockfreq = loops_per_sec*clockfactor; return(sprintf(buffer, "CPU:\t\t%s\n" "MMU:\t\t%s\n" "FPU:\t\t%s\n" "Clocking:\t%lu.%1luMHz\n" "BogoMips:\t%lu.%02lu\n" "Calibration:\t%lu loops\n", cpu, mmu, fpu, clockfreq/1000000,(clockfreq/100000)%10, loops_per_sec/500000,(loops_per_sec/5000)%100, loops_per_sec)); } void arch_gettod(int *year, int *mon, int *day, int *hour, int *min, int *sec) { if (mach_gettod) mach_gettod(year, mon, day, hour, min, sec); else *year = *mon = *day = *hour = *min = *sec = 0; }