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/arch/m68knommu/kernel/setup.c

https://bitbucket.org/evzijst/gittest
C | 347 lines | 263 code | 46 blank | 38 comment | 11 complexity | 538b88b4ab97f9a71dba103c0d2324a2 MD5 | raw file
  1/*
  2 *  linux/arch/m68knommu/kernel/setup.c
  3 *
  4 *  Copyright (C) 1999-2004  Greg Ungerer (gerg@snapgear.com)
  5 *  Copyright (C) 1998,1999  D. Jeff Dionne <jeff@lineo.ca>
  6 *  Copyleft  ()) 2000       James D. Schettine {james@telos-systems.com}
  7 *  Copyright (C) 1998       Kenneth Albanowski <kjahds@kjahds.com>
  8 *  Copyright (C) 1995       Hamish Macdonald
  9 *  Copyright (C) 2000       Lineo Inc. (www.lineo.com) 
 10 *  Copyright (C) 2001 	     Lineo, Inc. <www.lineo.com>
 11 *
 12 *  68VZ328 Fixes/support    Evan Stawnyczy <e@lineo.ca>
 13 */
 14
 15/*
 16 * This file handles the architecture-dependent parts of system setup
 17 */
 18
 19#include <linux/config.h>
 20#include <linux/kernel.h>
 21#include <linux/sched.h>
 22#include <linux/delay.h>
 23#include <linux/interrupt.h>
 24#include <linux/fs.h>
 25#include <linux/fb.h>
 26#include <linux/console.h>
 27#include <linux/genhd.h>
 28#include <linux/errno.h>
 29#include <linux/string.h>
 30#include <linux/major.h>
 31#include <linux/bootmem.h>
 32#include <linux/seq_file.h>
 33#include <linux/root_dev.h>
 34#include <linux/init.h>
 35
 36#include <asm/setup.h>
 37#include <asm/irq.h>
 38#include <asm/machdep.h>
 39
 40#ifdef CONFIG_BLK_DEV_INITRD
 41#include <asm/pgtable.h>
 42#endif
 43
 44unsigned long rom_length;
 45unsigned long memory_start;
 46unsigned long memory_end;
 47
 48char command_line[COMMAND_LINE_SIZE];
 49
 50/* setup some dummy routines */
 51static void dummy_waitbut(void)
 52{
 53}
 54
 55void (*mach_sched_init) (irqreturn_t (*handler)(int, void *, struct pt_regs *)) = NULL;
 56void (*mach_tick)( void ) = NULL;
 57/* machine dependent keyboard functions */
 58int (*mach_keyb_init) (void) = NULL;
 59int (*mach_kbdrate) (struct kbd_repeat *) = NULL;
 60void (*mach_kbd_leds) (unsigned int) = NULL;
 61/* machine dependent irq functions */
 62void (*mach_init_IRQ) (void) = NULL;
 63irqreturn_t (*(*mach_default_handler)[]) (int, void *, struct pt_regs *) = NULL;
 64void (*mach_enable_irq) (unsigned int) = NULL;
 65void (*mach_disable_irq) (unsigned int) = NULL;
 66int (*mach_get_irq_list) (struct seq_file *, void *) = NULL;
 67void (*mach_process_int) (int irq, struct pt_regs *fp) = NULL;
 68void (*mach_trap_init) (void);
 69/* machine dependent timer functions */
 70unsigned long (*mach_gettimeoffset) (void) = NULL;
 71void (*mach_gettod) (int*, int*, int*, int*, int*, int*) = NULL;
 72int (*mach_hwclk) (int, struct hwclk_time*) = NULL;
 73int (*mach_set_clock_mmss) (unsigned long) = NULL;
 74void (*mach_mksound)( unsigned int count, unsigned int ticks ) = NULL;
 75void (*mach_reset)( void ) = NULL;
 76void (*waitbut)(void) = dummy_waitbut;
 77void (*mach_debug_init)(void) = NULL;
 78void (*mach_halt)( void ) = NULL;
 79void (*mach_power_off)( void ) = NULL;
 80
 81
 82#ifdef CONFIG_M68000
 83	#define CPU "MC68000"
 84#endif
 85#ifdef CONFIG_M68328
 86	#define CPU "MC68328"
 87#endif
 88#ifdef CONFIG_M68EZ328
 89	#define CPU "MC68EZ328"
 90#endif
 91#ifdef CONFIG_M68VZ328
 92	#define CPU "MC68VZ328"
 93#endif
 94#ifdef CONFIG_M68332
 95	#define CPU "MC68332"
 96#endif
 97#ifdef CONFIG_M68360
 98	#define CPU "MC68360"
 99#endif
100#if defined(CONFIG_M5206)
101	#define	CPU "COLDFIRE(m5206)"
102#endif
103#if defined(CONFIG_M5206e)
104	#define	CPU "COLDFIRE(m5206e)"
105#endif
106#if defined(CONFIG_M5249)
107	#define CPU "COLDFIRE(m5249)"
108#endif
109#if defined(CONFIG_M527x)
110	#define CPU "COLDFIRE(m5270/5271/5274/5275)"
111#endif
112#if defined(CONFIG_M5272)
113	#define CPU "COLDFIRE(m5272)"
114#endif
115#if defined(CONFIG_M528x)
116	#define CPU "COLDFIRE(m5280/5282)"
117#endif
118#if defined(CONFIG_M5307)
119	#define	CPU "COLDFIRE(m5307)"
120#endif
121#if defined(CONFIG_M5407)
122	#define	CPU "COLDFIRE(m5407)"
123#endif
124#ifndef CPU
125	#define	CPU "UNKOWN"
126#endif
127
128/* (es) */
129/* note: why is this defined here?  the must be a better place to put this */
130#if defined( CONFIG_TELOS) || defined( CONFIG_UCDIMM ) || defined( CONFIG_UCSIMM ) || defined(CONFIG_DRAGEN2) || (defined( CONFIG_PILOT ) && defined( CONFIG_M68328 ))
131#define CAT_ROMARRAY
132#endif
133/* (/es) */
134
135extern int _stext, _etext, _sdata, _edata, _sbss, _ebss, _end;
136extern int _ramstart, _ramend;
137
138void setup_arch(char **cmdline_p)
139{
140	int bootmap_size;
141
142#if defined(CAT_ROMARRAY) && defined(DEBUG)
143	extern int __data_rom_start;
144	extern int __data_start;
145	int *romarray = (int *)((int) &__data_rom_start +
146			      (int)&_edata - (int)&__data_start);
147#endif
148
149	memory_start = PAGE_ALIGN(_ramstart);
150	memory_end = _ramend; /* by now the stack is part of the init task */
151
152	init_mm.start_code = (unsigned long) &_stext;
153	init_mm.end_code = (unsigned long) &_etext;
154	init_mm.end_data = (unsigned long) &_edata;
155	init_mm.brk = (unsigned long) 0; 
156
157	config_BSP(&command_line[0], sizeof(command_line));
158
159	printk(KERN_INFO "\x0F\r\n\nuClinux/" CPU "\n");
160
161#ifdef CONFIG_UCDIMM
162	printk(KERN_INFO "uCdimm by Lineo, Inc. <www.lineo.com>\n");
163#endif
164#ifdef CONFIG_M68VZ328
165	printk(KERN_INFO "M68VZ328 support by Evan Stawnyczy <e@lineo.ca>\n");
166#endif
167#ifdef CONFIG_COLDFIRE
168	printk(KERN_INFO "COLDFIRE port done by Greg Ungerer, gerg@snapgear.com\n");
169#ifdef CONFIG_M5307
170	printk(KERN_INFO "Modified for M5307 by Dave Miller, dmiller@intellistor.com\n");
171#endif
172#ifdef CONFIG_ELITE
173	printk(KERN_INFO "Modified for M5206eLITE by Rob Scott, rscott@mtrob.fdns.net\n");
174#endif  
175#ifdef CONFIG_TELOS
176	printk(KERN_INFO "Modified for Omnia ToolVox by James D. Schettine, james@telos-systems.com\n");
177#endif
178#endif
179	printk(KERN_INFO "Flat model support (C) 1998,1999 Kenneth Albanowski, D. Jeff Dionne\n");
180
181#if defined( CONFIG_PILOT ) && defined( CONFIG_M68328 )
182	printk(KERN_INFO "TRG SuperPilot FLASH card support <info@trgnet.com>\n");
183#endif
184
185#if defined( CONFIG_PILOT ) && defined( CONFIG_M68EZ328 )
186	printk(KERN_INFO "PalmV support by Lineo Inc. <jeff@uclinux.com>\n");
187#endif
188
189#ifdef CONFIG_M68EZ328ADS
190	printk(KERN_INFO "M68EZ328ADS board support (C) 1999 Vladimir Gurevich <vgurevic@cisco.com>\n");
191#endif
192
193#ifdef CONFIG_ALMA_ANS
194	printk(KERN_INFO "Alma Electronics board support (C) 1999 Vladimir Gurevich <vgurevic@cisco.com>\n");
195#endif
196#if defined (CONFIG_M68360)
197	printk(KERN_INFO "QUICC port done by SED Systems <hamilton@sedsystems.ca>,\n");
198	printk(KERN_INFO "based on 2.0.38 port by Lineo Inc. <mleslie@lineo.com>.\n");
199#endif
200#ifdef CONFIG_DRAGEN2
201	printk(KERN_INFO "DragonEngine II board support by Georges Menie\n");
202#endif
203
204#ifdef DEBUG
205	printk(KERN_DEBUG "KERNEL -> TEXT=0x%06x-0x%06x DATA=0x%06x-0x%06x "
206		"BSS=0x%06x-0x%06x\n", (int) &_stext, (int) &_etext,
207		(int) &_sdata, (int) &_edata,
208		(int) &_sbss, (int) &_ebss);
209	printk(KERN_DEBUG "KERNEL -> ROMFS=0x%06x-0x%06x MEM=0x%06x-0x%06x "
210		"STACK=0x%06x-0x%06x\n",
211#ifdef CAT_ROMARRAY
212		(int) romarray, ((int) romarray) + romarray[2],
213#else
214		(int) &_ebss, (int) memory_start,
215#endif
216		(int) memory_start, (int) memory_end,
217		(int) memory_end, (int) _ramend);
218#endif
219
220	/* Keep a copy of command line */
221	*cmdline_p = &command_line[0];
222	memcpy(saved_command_line, command_line, COMMAND_LINE_SIZE);
223	saved_command_line[COMMAND_LINE_SIZE-1] = 0;
224
225#ifdef DEBUG
226	if (strlen(*cmdline_p)) 
227		printk(KERN_DEBUG "Command line: '%s'\n", *cmdline_p);
228#endif
229
230#if defined(CONFIG_FRAMEBUFFER_CONSOLE) && defined(CONFIG_DUMMY_CONSOLE)
231	conswitchp = &dummy_con;
232#endif
233
234	/*
235	 * Give all the memory to the bootmap allocator, tell it to put the
236	 * boot mem_map at the start of memory.
237	 */
238	bootmap_size = init_bootmem_node(
239			NODE_DATA(0),
240			memory_start >> PAGE_SHIFT, /* map goes here */
241			PAGE_OFFSET >> PAGE_SHIFT,	/* 0 on coldfire */
242			memory_end >> PAGE_SHIFT);
243	/*
244	 * Free the usable memory, we have to make sure we do not free
245	 * the bootmem bitmap so we then reserve it after freeing it :-)
246	 */
247	free_bootmem(memory_start, memory_end - memory_start);
248	reserve_bootmem(memory_start, bootmap_size);
249
250	/*
251	 * Get kmalloc into gear.
252	 */
253	paging_init();
254}
255
256int get_cpuinfo(char * buffer)
257{
258    char *cpu, *mmu, *fpu;
259    u_long clockfreq;
260
261    cpu = CPU;
262    mmu = "none";
263    fpu = "none";
264
265#ifdef CONFIG_COLDFIRE
266    clockfreq = (loops_per_jiffy*HZ)*3;
267#else
268    clockfreq = (loops_per_jiffy*HZ)*16;
269#endif
270
271    return(sprintf(buffer, "CPU:\t\t%s\n"
272		   "MMU:\t\t%s\n"
273		   "FPU:\t\t%s\n"
274		   "Clocking:\t%lu.%1luMHz\n"
275		   "BogoMips:\t%lu.%02lu\n"
276		   "Calibration:\t%lu loops\n",
277		   cpu, mmu, fpu,
278		   clockfreq/1000000,(clockfreq/100000)%10,
279		   (loops_per_jiffy*HZ)/500000,((loops_per_jiffy*HZ)/5000)%100,
280		   (loops_per_jiffy*HZ)));
281
282}
283
284/*
285 *	Get CPU information for use by the procfs.
286 */
287
288static int show_cpuinfo(struct seq_file *m, void *v)
289{
290    char *cpu, *mmu, *fpu;
291    u_long clockfreq;
292
293    cpu = CPU;
294    mmu = "none";
295    fpu = "none";
296
297#ifdef CONFIG_COLDFIRE
298    clockfreq = (loops_per_jiffy*HZ)*3;
299#else
300    clockfreq = (loops_per_jiffy*HZ)*16;
301#endif
302
303    seq_printf(m, "CPU:\t\t%s\n"
304		   "MMU:\t\t%s\n"
305		   "FPU:\t\t%s\n"
306		   "Clocking:\t%lu.%1luMHz\n"
307		   "BogoMips:\t%lu.%02lu\n"
308		   "Calibration:\t%lu loops\n",
309		   cpu, mmu, fpu,
310		   clockfreq/1000000,(clockfreq/100000)%10,
311		   (loops_per_jiffy*HZ)/500000,((loops_per_jiffy*HZ)/5000)%100,
312		   (loops_per_jiffy*HZ));
313
314	return 0;
315}
316
317static void *c_start(struct seq_file *m, loff_t *pos)
318{
319	return *pos < NR_CPUS ? ((void *) 0x12345678) : NULL;
320}
321
322static void *c_next(struct seq_file *m, void *v, loff_t *pos)
323{
324	++*pos;
325	return c_start(m, pos);
326}
327
328static void c_stop(struct seq_file *m, void *v)
329{
330}
331
332struct seq_operations cpuinfo_op = {
333	.start	= c_start,
334	.next	= c_next,
335	.stop	= c_stop,
336	.show	= show_cpuinfo,
337};
338
339void arch_gettod(int *year, int *mon, int *day, int *hour,
340		 int *min, int *sec)
341{
342	if (mach_gettod)
343		mach_gettod(year, mon, day, hour, min, sec);
344	else
345		*year = *mon = *day = *hour = *min = *sec = 0;
346}
347