| // 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/memblock.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/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)(void) __initdata = NULL; |
| |
| /* machine dependent reboot functions */ |
| void (*mach_reset)(void); |
| void (*mach_halt)(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) |
| { |
| memory_start = PAGE_ALIGN(_ramstart); |
| memory_end = _ramend; |
| |
| setup_initial_init_mm(_stext, _etext, _edata, NULL); |
| |
| config_BSP(&command_line[0], sizeof(command_line)); |
| |
| #if defined(CONFIG_BOOTPARAM) |
| strscpy(&command_line[0], CONFIG_BOOTPARAM_STRING, sizeof(command_line)); |
| #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_M68328 |
| pr_info("68328 support D. Jeff Dionne <jeff@uclinux.org>\n"); |
| pr_info("68328 support Kenneth Albanowski <kjahds@kjshds.com>\n"); |
| #endif |
| #ifdef CONFIG_M68EZ328 |
| pr_info("68EZ328 DragonBallEZ support (C) 1999 Rt-Control, Inc\n"); |
| #endif |
| #ifdef CONFIG_M68VZ328 |
| pr_info("M68VZ328 support by Evan Stawnyczy <e@lineo.ca>\n"); |
| pr_info("68VZ328 DragonBallVZ support (c) 2001 Lineo, Inc.\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("68328/Pilot support Bernhard Kuhn <kuhn@lpr.e-technik.tu-muenchen.de>\n"); |
| 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); |
| |
| memblock_add(_rambase, memory_end - _rambase); |
| memblock_reserve(_rambase, memory_start - _rambase); |
| |
| /* 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; |
| |
| /* |
| * 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); |
| |
| #if defined(CONFIG_UBOOT) && defined(CONFIG_BLK_DEV_INITRD) |
| if ((initrd_start > 0) && (initrd_start < initrd_end) && |
| (initrd_end < memory_end)) |
| memblock_reserve(initrd_start, initrd_end - initrd_start); |
| #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, |
| }; |
| |
