| // SPDX-License-Identifier: GPL-2.0 | |
| /* | |
| * linux/arch/m68knommu/kernel/setup.c | |
| * | |
| * Copyright (C) 1999-2007 Greg Ungerer (gerg@snapgear.com) | |
| * Copyright (C) 1998,1999 D. Jeff Dionne <jeff@uClinux.org> | |
| * Copyleft ()) 2000 James D. Schettine {james@telos-systems.com} | |
| * Copyright (C) 1998 Kenneth Albanowski <kjahds@kjahds.com> | |
| * Copyright (C) 1995 Hamish Macdonald | |
| * Copyright (C) 2000 Lineo Inc. (www.lineo.com) | |
| * Copyright (C) 2001 Lineo, Inc. <www.lineo.com> | |
| * | |
| * 68VZ328 Fixes/support Evan Stawnyczy <e@lineo.ca> | |
| */ | |
| /* | |
| * This file handles the architecture-dependent parts of system setup | |
| */ | |
| #include <linux/kernel.h> | |
| #include <linux/sched.h> | |
| #include <linux/delay.h> | |
| #include <linux/interrupt.h> | |
| #include <linux/fb.h> | |
| #include <linux/module.h> | |
| #include <linux/mm.h> | |
| #include <linux/console.h> | |
| #include <linux/errno.h> | |
| #include <linux/string.h> | |
| #include <linux/bootmem.h> | |
| #include <linux/seq_file.h> | |
| #include <linux/init.h> | |
| #include <linux/initrd.h> | |
| #include <linux/root_dev.h> | |
| #include <linux/rtc.h> | |
| #include <asm/setup.h> | |
| #include <asm/bootinfo.h> | |
| #include <asm/irq.h> | |
| #include <asm/machdep.h> | |
| #include <asm/pgtable.h> | |
| #include <asm/sections.h> | |
| 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_M68000 | |
| #if defined(CONFIG_M68328) | |
| #define CPU_NAME "MC68328" | |
| #elif defined(CONFIG_M68EZ328) | |
| #define CPU_NAME "MC68EZ328" | |
| #elif defined(CONFIG_M68VZ328) | |
| #define CPU_NAME "MC68VZ328" | |
| #else | |
| #define CPU_NAME "MC68000" | |
| #endif | |
| #endif /* CONFIG_M68000 */ | |
| #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 | |
| 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 */ | |
| process_uboot_commandline(&command_line[0], sizeof(command_line)); | |
| pr_info("uClinux with CPU " CPU_NAME "\n"); | |
| #ifdef CONFIG_UCDIMM | |
| pr_info("uCdimm by Lineo, Inc. <www.lineo.com>\n"); | |
| #endif | |
| #ifdef CONFIG_M68VZ328 | |
| pr_info("M68VZ328 support by Evan Stawnyczy <e@lineo.ca>\n"); | |
| #endif | |
| #ifdef CONFIG_COLDFIRE | |
| pr_info("COLDFIRE port done by Greg Ungerer, gerg@snapgear.com\n"); | |
| #ifdef CONFIG_M5307 | |
| pr_info("Modified for M5307 by Dave Miller, dmiller@intellistor.com\n"); | |
| #endif | |
| #ifdef CONFIG_ELITE | |
| pr_info("Modified for M5206eLITE by Rob Scott, rscott@mtrob.fdns.net\n"); | |
| #endif | |
| #endif | |
| pr_info("Flat model support (C) 1998,1999 Kenneth Albanowski, D. Jeff Dionne\n"); | |
| #if defined( CONFIG_PILOT ) && defined( CONFIG_M68328 ) | |
| pr_info("TRG SuperPilot FLASH card support <info@trgnet.com>\n"); | |
| #endif | |
| #if defined( CONFIG_PILOT ) && defined( CONFIG_M68EZ328 ) | |
| pr_info("PalmV support by Lineo Inc. <jeff@uclinux.com>\n"); | |
| #endif | |
| #ifdef CONFIG_DRAGEN2 | |
| pr_info("DragonEngine II board support by Georges Menie\n"); | |
| #endif | |
| #ifdef CONFIG_M5235EVB | |
| pr_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, __bss_start, __bss_stop); | |
| pr_debug("MEMORY -> ROMFS=0x%p-0x%06lx MEM=0x%06lx-0x%06lx\n ", | |
| __bss_stop, 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. | |
| */ | |
| min_low_pfn = PFN_DOWN(memory_start); | |
| max_pfn = max_low_pfn = PFN_DOWN(memory_end); | |
| bootmap_size = init_bootmem_node( | |
| NODE_DATA(0), | |
| min_low_pfn, /* map goes here */ | |
| PFN_DOWN(PAGE_OFFSET), | |
| max_pfn); | |
| /* | |
| * 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, | |
| }; | |