/* * linux/arch/m68knommu/kernel/setup.c * * Copyright (C) 1999-2007 Greg Ungerer (gerg@snapgear.com) * Copyright (C) 1998,1999 D. Jeff Dionne * Copyleft ()) 2000 James D. Schettine {james@telos-systems.com} * Copyright (C) 1998 Kenneth Albanowski * Copyright (C) 1995 Hamish Macdonald * Copyright (C) 2000 Lineo Inc. (www.lineo.com) * Copyright (C) 2001 Lineo, Inc. * * 68VZ328 Fixes/support Evan Stawnyczy */ /* * This file handles the architecture-dependent parts of system setup */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include unsigned long memory_start; unsigned long memory_end; EXPORT_SYMBOL(memory_start); EXPORT_SYMBOL(memory_end); char __initdata command_line[COMMAND_LINE_SIZE]; /* machine dependent timer functions */ void (*mach_sched_init)(irq_handler_t handler) __initdata = NULL; int (*mach_set_clock_mmss)(unsigned long); int (*mach_hwclk) (int, struct rtc_time*); /* machine dependent reboot functions */ void (*mach_reset)(void); void (*mach_halt)(void); void (*mach_power_off)(void); #ifdef CONFIG_M68328 #define CPU_NAME "MC68328" #endif #ifdef CONFIG_M68EZ328 #define CPU_NAME "MC68EZ328" #endif #ifdef CONFIG_M68VZ328 #define CPU_NAME "MC68VZ328" #endif #ifdef CONFIG_M68360 #define CPU_NAME "MC68360" #endif #ifndef CPU_NAME #define CPU_NAME "UNKNOWN" #endif /* * Different cores have different instruction execution timings. * The old/traditional 68000 cores are basically all the same, at 16. * The ColdFire cores vary a little, their values are defined in their * headers. We default to the standard 68000 value here. */ #ifndef CPU_INSTR_PER_JIFFY #define CPU_INSTR_PER_JIFFY 16 #endif #if defined(CONFIG_UBOOT) /* * parse_uboot_commandline * * Copies u-boot commandline arguments and store them in the proper linux * variables. * * Assumes: * _init_sp global contains the address in the stack pointer when the * kernel starts (see head.S::_start) * * U-Boot calling convention: * (*kernel) (kbd, initrd_start, initrd_end, cmd_start, cmd_end); * * _init_sp can be parsed as such * * _init_sp+00 = u-boot cmd after jsr into kernel (skip) * _init_sp+04 = &kernel board_info (residual data) * _init_sp+08 = &initrd_start * _init_sp+12 = &initrd_end * _init_sp+16 = &cmd_start * _init_sp+20 = &cmd_end * * This also assumes that the memory locations pointed to are still * unmodified. U-boot places them near the end of external SDRAM. * * Argument(s): * commandp = the linux commandline arg container to fill. * size = the sizeof commandp. * * Returns: */ void parse_uboot_commandline(char *commandp, int size) { extern unsigned long _init_sp; unsigned long *sp; unsigned long uboot_kbd; unsigned long uboot_initrd_start, uboot_initrd_end; unsigned long uboot_cmd_start, uboot_cmd_end; sp = (unsigned long *)_init_sp; uboot_kbd = sp[1]; uboot_initrd_start = sp[2]; uboot_initrd_end = sp[3]; uboot_cmd_start = sp[4]; uboot_cmd_end = sp[5]; if (uboot_cmd_start && uboot_cmd_end) strncpy(commandp, (const char *)uboot_cmd_start, size); #if defined(CONFIG_BLK_DEV_INITRD) if (uboot_initrd_start && uboot_initrd_end && (uboot_initrd_end > uboot_initrd_start)) { initrd_start = uboot_initrd_start; initrd_end = uboot_initrd_end; ROOT_DEV = Root_RAM0; printk(KERN_INFO "initrd at 0x%lx:0x%lx\n", initrd_start, initrd_end); } #endif /* if defined(CONFIG_BLK_DEV_INITRD) */ } #endif /* #if defined(CONFIG_UBOOT) */ void __init setup_arch(char **cmdline_p) { int bootmap_size; memory_start = PAGE_ALIGN(_ramstart); memory_end = _ramend; init_mm.start_code = (unsigned long) &_stext; init_mm.end_code = (unsigned long) &_etext; init_mm.end_data = (unsigned long) &_edata; init_mm.brk = (unsigned long) 0; config_BSP(&command_line[0], sizeof(command_line)); #if defined(CONFIG_BOOTPARAM) strncpy(&command_line[0], CONFIG_BOOTPARAM_STRING, sizeof(command_line)); command_line[sizeof(command_line) - 1] = 0; #endif /* CONFIG_BOOTPARAM */ #if defined(CONFIG_UBOOT) /* CONFIG_UBOOT and CONFIG_BOOTPARAM defined, concatenate cmdline */ #if defined(CONFIG_BOOTPARAM) /* Add the whitespace separator */ command_line[strlen(CONFIG_BOOTPARAM_STRING)] = ' '; /* Parse uboot command line into the rest of the buffer */ parse_uboot_commandline( &command_line[(strlen(CONFIG_BOOTPARAM_STRING)+1)], (sizeof(command_line) - (strlen(CONFIG_BOOTPARAM_STRING)+1))); /* Only CONFIG_UBOOT defined, create cmdline */ #else parse_uboot_commandline(&command_line[0], sizeof(command_line)); #endif /* CONFIG_BOOTPARAM */ command_line[sizeof(command_line) - 1] = 0; #endif /* CONFIG_UBOOT */ printk(KERN_INFO "\x0F\r\n\nuClinux/" CPU_NAME "\n"); #ifdef CONFIG_UCDIMM printk(KERN_INFO "uCdimm by Lineo, Inc. \n"); #endif #ifdef CONFIG_M68VZ328 printk(KERN_INFO "M68VZ328 support by Evan Stawnyczy \n"); #endif #ifdef CONFIG_COLDFIRE printk(KERN_INFO "COLDFIRE port done by Greg Ungerer, gerg@snapgear.com\n"); #ifdef CONFIG_M5307 printk(KERN_INFO "Modified for M5307 by Dave Miller, dmiller@intellistor.com\n"); #endif #ifdef CONFIG_ELITE printk(KERN_INFO "Modified for M5206eLITE by Rob Scott, rscott@mtrob.fdns.net\n"); #endif #endif printk(KERN_INFO "Flat model support (C) 1998,1999 Kenneth Albanowski, D. Jeff Dionne\n"); #if defined( CONFIG_PILOT ) && defined( CONFIG_M68328 ) printk(KERN_INFO "TRG SuperPilot FLASH card support \n"); #endif #if defined( CONFIG_PILOT ) && defined( CONFIG_M68EZ328 ) printk(KERN_INFO "PalmV support by Lineo Inc. \n"); #endif #if defined (CONFIG_M68360) printk(KERN_INFO "QUICC port done by SED Systems ,\n"); printk(KERN_INFO "based on 2.0.38 port by Lineo Inc. .\n"); #endif #ifdef CONFIG_DRAGEN2 printk(KERN_INFO "DragonEngine II board support by Georges Menie\n"); #endif #ifdef CONFIG_M5235EVB printk(KERN_INFO "Motorola M5235EVB support (C)2005 Syn-tech Systems, Inc. (Jate Sujjavanich)\n"); #endif pr_debug("KERNEL -> TEXT=0x%p-0x%p DATA=0x%p-0x%p BSS=0x%p-0x%p\n", _stext, _etext, _sdata, _edata, _sbss, _ebss); pr_debug("MEMORY -> ROMFS=0x%p-0x%06lx MEM=0x%06lx-0x%06lx\n ", _ebss, memory_start, memory_start, memory_end); /* Keep a copy of command line */ *cmdline_p = &command_line[0]; memcpy(boot_command_line, command_line, COMMAND_LINE_SIZE); boot_command_line[COMMAND_LINE_SIZE-1] = 0; #if defined(CONFIG_FRAMEBUFFER_CONSOLE) && defined(CONFIG_DUMMY_CONSOLE) conswitchp = &dummy_con; #endif /* * Give all the memory to the bootmap allocator, tell it to put the * boot mem_map at the start of memory. */ bootmap_size = init_bootmem_node( NODE_DATA(0), memory_start >> PAGE_SHIFT, /* map goes here */ PAGE_OFFSET >> PAGE_SHIFT, /* 0 on coldfire */ memory_end >> PAGE_SHIFT); /* * Free the usable memory, we have to make sure we do not free * the bootmem bitmap so we then reserve it after freeing it :-) */ free_bootmem(memory_start, memory_end - memory_start); reserve_bootmem(memory_start, bootmap_size, BOOTMEM_DEFAULT); #if defined(CONFIG_UBOOT) && defined(CONFIG_BLK_DEV_INITRD) if ((initrd_start > 0) && (initrd_start < initrd_end) && (initrd_end < memory_end)) reserve_bootmem(initrd_start, initrd_end - initrd_start, BOOTMEM_DEFAULT); #endif /* if defined(CONFIG_BLK_DEV_INITRD) */ /* * Get kmalloc into gear. */ paging_init(); } /* * Get CPU information for use by the procfs. */ static int show_cpuinfo(struct seq_file *m, void *v) { char *cpu, *mmu, *fpu; u_long clockfreq; cpu = CPU_NAME; mmu = "none"; fpu = "none"; clockfreq = (loops_per_jiffy * HZ) * CPU_INSTR_PER_JIFFY; seq_printf(m, "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_jiffy * HZ) / 500000, ((loops_per_jiffy * HZ) / 5000) % 100, (loops_per_jiffy * HZ)); return 0; } static void *c_start(struct seq_file *m, loff_t *pos) { return *pos < NR_CPUS ? ((void *) 0x12345678) : NULL; } static void *c_next(struct seq_file *m, void *v, loff_t *pos) { ++*pos; return c_start(m, pos); } static void c_stop(struct seq_file *m, void *v) { } const struct seq_operations cpuinfo_op = { .start = c_start, .next = c_next, .stop = c_stop, .show = show_cpuinfo, };