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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 | // 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/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_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) { 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); memblock_add(memory_start, memory_end - memory_start); /* 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, }; |