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227 lines
6.3 KiB
227 lines
6.3 KiB
// SPDX-License-Identifier: GPL-2.0 |
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/* |
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* linux/arch/m68knommu/kernel/setup.c |
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* |
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* Copyright (C) 1999-2007 Greg Ungerer ([email protected]) |
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* Copyright (C) 1998,1999 D. Jeff Dionne <[email protected]> |
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* Copyleft ()) 2000 James D. Schettine {[email protected]} |
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* Copyright (C) 1998 Kenneth Albanowski <[email protected]> |
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* Copyright (C) 1995 Hamish Macdonald |
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* Copyright (C) 2000 Lineo Inc. (www.lineo.com) |
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* Copyright (C) 2001 Lineo, Inc. <www.lineo.com> |
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* |
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* 68VZ328 Fixes/support Evan Stawnyczy <[email protected]> |
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*/ |
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/* |
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* This file handles the architecture-dependent parts of system setup |
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*/ |
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#include <linux/kernel.h> |
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#include <linux/sched.h> |
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#include <linux/delay.h> |
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#include <linux/interrupt.h> |
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#include <linux/fb.h> |
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#include <linux/module.h> |
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#include <linux/mm.h> |
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#include <linux/console.h> |
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#include <linux/errno.h> |
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#include <linux/string.h> |
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#include <linux/memblock.h> |
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#include <linux/seq_file.h> |
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#include <linux/init.h> |
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#include <linux/initrd.h> |
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#include <linux/root_dev.h> |
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#include <linux/rtc.h> |
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#include <asm/setup.h> |
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#include <asm/bootinfo.h> |
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#include <asm/irq.h> |
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#include <asm/machdep.h> |
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#include <asm/sections.h> |
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unsigned long memory_start; |
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unsigned long memory_end; |
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EXPORT_SYMBOL(memory_start); |
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EXPORT_SYMBOL(memory_end); |
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char __initdata command_line[COMMAND_LINE_SIZE]; |
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/* machine dependent timer functions */ |
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void (*mach_sched_init)(void) __initdata = NULL; |
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int (*mach_hwclk) (int, struct rtc_time*); |
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/* machine dependent reboot functions */ |
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void (*mach_reset)(void); |
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void (*mach_halt)(void); |
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void (*mach_power_off)(void); |
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#ifdef CONFIG_M68000 |
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#if defined(CONFIG_M68328) |
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#define CPU_NAME "MC68328" |
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#elif defined(CONFIG_M68EZ328) |
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#define CPU_NAME "MC68EZ328" |
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#elif defined(CONFIG_M68VZ328) |
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#define CPU_NAME "MC68VZ328" |
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#else |
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#define CPU_NAME "MC68000" |
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#endif |
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#endif /* CONFIG_M68000 */ |
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#ifndef CPU_NAME |
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#define CPU_NAME "UNKNOWN" |
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#endif |
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/* |
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* Different cores have different instruction execution timings. |
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* The old/traditional 68000 cores are basically all the same, at 16. |
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* The ColdFire cores vary a little, their values are defined in their |
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* headers. We default to the standard 68000 value here. |
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*/ |
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#ifndef CPU_INSTR_PER_JIFFY |
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#define CPU_INSTR_PER_JIFFY 16 |
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#endif |
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void __init setup_arch(char **cmdline_p) |
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{ |
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memory_start = PAGE_ALIGN(_ramstart); |
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memory_end = _ramend; |
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init_mm.start_code = (unsigned long) &_stext; |
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init_mm.end_code = (unsigned long) &_etext; |
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init_mm.end_data = (unsigned long) &_edata; |
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init_mm.brk = (unsigned long) 0; |
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config_BSP(&command_line[0], sizeof(command_line)); |
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#if defined(CONFIG_BOOTPARAM) |
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strncpy(&command_line[0], CONFIG_BOOTPARAM_STRING, sizeof(command_line)); |
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command_line[sizeof(command_line) - 1] = 0; |
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#endif /* CONFIG_BOOTPARAM */ |
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process_uboot_commandline(&command_line[0], sizeof(command_line)); |
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pr_info("uClinux with CPU " CPU_NAME "\n"); |
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#ifdef CONFIG_UCDIMM |
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pr_info("uCdimm by Lineo, Inc. <www.lineo.com>\n"); |
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#endif |
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#ifdef CONFIG_M68328 |
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pr_info("68328 support D. Jeff Dionne <[email protected]>\n"); |
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pr_info("68328 support Kenneth Albanowski <[email protected]>\n"); |
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#endif |
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#ifdef CONFIG_M68EZ328 |
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pr_info("68EZ328 DragonBallEZ support (C) 1999 Rt-Control, Inc\n"); |
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#endif |
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#ifdef CONFIG_M68VZ328 |
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pr_info("M68VZ328 support by Evan Stawnyczy <[email protected]>\n"); |
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pr_info("68VZ328 DragonBallVZ support (c) 2001 Lineo, Inc.\n"); |
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#endif |
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#ifdef CONFIG_COLDFIRE |
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pr_info("COLDFIRE port done by Greg Ungerer, [email protected]\n"); |
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#ifdef CONFIG_M5307 |
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pr_info("Modified for M5307 by Dave Miller, [email protected]\n"); |
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#endif |
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#ifdef CONFIG_ELITE |
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pr_info("Modified for M5206eLITE by Rob Scott, [email protected]\n"); |
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#endif |
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#endif |
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pr_info("Flat model support (C) 1998,1999 Kenneth Albanowski, D. Jeff Dionne\n"); |
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#if defined( CONFIG_PILOT ) && defined( CONFIG_M68328 ) |
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pr_info("68328/Pilot support Bernhard Kuhn <[email protected]>\n"); |
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pr_info("TRG SuperPilot FLASH card support <[email protected]>\n"); |
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#endif |
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#if defined( CONFIG_PILOT ) && defined( CONFIG_M68EZ328 ) |
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pr_info("PalmV support by Lineo Inc. <[email protected]>\n"); |
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#endif |
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#ifdef CONFIG_DRAGEN2 |
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pr_info("DragonEngine II board support by Georges Menie\n"); |
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#endif |
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#ifdef CONFIG_M5235EVB |
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pr_info("Motorola M5235EVB support (C)2005 Syn-tech Systems, Inc. (Jate Sujjavanich)\n"); |
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#endif |
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pr_debug("KERNEL -> TEXT=0x%p-0x%p DATA=0x%p-0x%p BSS=0x%p-0x%p\n", |
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_stext, _etext, _sdata, _edata, __bss_start, __bss_stop); |
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pr_debug("MEMORY -> ROMFS=0x%p-0x%06lx MEM=0x%06lx-0x%06lx\n ", |
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__bss_stop, memory_start, memory_start, memory_end); |
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memblock_add(_rambase, memory_end - _rambase); |
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memblock_reserve(_rambase, memory_start - _rambase); |
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/* Keep a copy of command line */ |
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*cmdline_p = &command_line[0]; |
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memcpy(boot_command_line, command_line, COMMAND_LINE_SIZE); |
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boot_command_line[COMMAND_LINE_SIZE-1] = 0; |
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/* |
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* Give all the memory to the bootmap allocator, tell it to put the |
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* boot mem_map at the start of memory. |
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*/ |
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min_low_pfn = PFN_DOWN(memory_start); |
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max_pfn = max_low_pfn = PFN_DOWN(memory_end); |
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#if defined(CONFIG_UBOOT) && defined(CONFIG_BLK_DEV_INITRD) |
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if ((initrd_start > 0) && (initrd_start < initrd_end) && |
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(initrd_end < memory_end)) |
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memblock_reserve(initrd_start, initrd_end - initrd_start); |
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#endif /* if defined(CONFIG_BLK_DEV_INITRD) */ |
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/* |
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* Get kmalloc into gear. |
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*/ |
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paging_init(); |
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} |
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/* |
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* Get CPU information for use by the procfs. |
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*/ |
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static int show_cpuinfo(struct seq_file *m, void *v) |
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{ |
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char *cpu, *mmu, *fpu; |
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u_long clockfreq; |
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cpu = CPU_NAME; |
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mmu = "none"; |
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fpu = "none"; |
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clockfreq = (loops_per_jiffy * HZ) * CPU_INSTR_PER_JIFFY; |
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seq_printf(m, "CPU:\t\t%s\n" |
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"MMU:\t\t%s\n" |
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"FPU:\t\t%s\n" |
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"Clocking:\t%lu.%1luMHz\n" |
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"BogoMips:\t%lu.%02lu\n" |
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"Calibration:\t%lu loops\n", |
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cpu, mmu, fpu, |
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clockfreq / 1000000, |
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(clockfreq / 100000) % 10, |
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(loops_per_jiffy * HZ) / 500000, |
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((loops_per_jiffy * HZ) / 5000) % 100, |
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(loops_per_jiffy * HZ)); |
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return 0; |
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} |
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static void *c_start(struct seq_file *m, loff_t *pos) |
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{ |
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return *pos < NR_CPUS ? ((void *) 0x12345678) : NULL; |
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} |
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static void *c_next(struct seq_file *m, void *v, loff_t *pos) |
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{ |
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++*pos; |
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return c_start(m, pos); |
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} |
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static void c_stop(struct seq_file *m, void *v) |
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{ |
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} |
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const struct seq_operations cpuinfo_op = { |
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.start = c_start, |
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.next = c_next, |
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.stop = c_stop, |
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.show = show_cpuinfo, |
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}; |
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