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gerrit-public.fairphone.software / kernel / msm-4.9 / 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 / . / arch / m68knommu / kernel / setup.c
blob: 557238596dcb9bd14ad93e8f4c031296885d34db [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame^]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