~ [ source navigation ] ~ [ diff markup ] ~ [ identifier search ] ~

TOMOYO Linux Cross Reference
Linux/arch/m68k/kernel/setup_no.c

Version: ~ [ linux-6.0-rc6 ] ~ [ linux-5.19.10 ] ~ [ linux-5.18.19 ] ~ [ linux-5.17.15 ] ~ [ linux-5.16.20 ] ~ [ linux-5.15.69 ] ~ [ linux-5.14.21 ] ~ [ linux-5.13.19 ] ~ [ linux-5.12.19 ] ~ [ linux-5.11.22 ] ~ [ linux-5.10.144 ] ~ [ linux-5.9.16 ] ~ [ linux-5.8.18 ] ~ [ linux-5.7.19 ] ~ [ linux-5.6.19 ] ~ [ linux-5.5.19 ] ~ [ linux-5.4.214 ] ~ [ linux-5.3.18 ] ~ [ linux-5.2.21 ] ~ [ linux-5.1.21 ] ~ [ linux-5.0.21 ] ~ [ linux-4.20.17 ] ~ [ linux-4.19.259 ] ~ [ linux-4.18.20 ] ~ [ linux-4.17.19 ] ~ [ linux-4.16.18 ] ~ [ linux-4.15.18 ] ~ [ linux-4.14.294 ] ~ [ linux-4.13.16 ] ~ [ linux-4.12.14 ] ~ [ linux-4.11.12 ] ~ [ linux-4.10.17 ] ~ [ linux-4.9.329 ] ~ [ linux-4.8.17 ] ~ [ linux-4.7.10 ] ~ [ linux-4.6.7 ] ~ [ linux-4.5.7 ] ~ [ linux-4.4.302 ] ~ [ linux-4.3.6 ] ~ [ linux-4.2.8 ] ~ [ linux-4.1.52 ] ~ [ linux-4.0.9 ] ~ [ linux-3.10.108 ] ~ [ linux-2.6.32.71 ] ~ [ linux-2.6.0 ] ~ [ linux-2.4.37.11 ] ~ [ unix-v6-master ] ~ [ ccs-tools-1.8.9 ] ~ [ policy-sample ] ~
Architecture: ~ [ i386 ] ~ [ alpha ] ~ [ m68k ] ~ [ mips ] ~ [ ppc ] ~ [ sparc ] ~ [ sparc64 ] ~

  1 /*
  2  *  linux/arch/m68knommu/kernel/setup.c
  3  *
  4  *  Copyright (C) 1999-2007  Greg Ungerer (gerg@snapgear.com)
  5  *  Copyright (C) 1998,1999  D. Jeff Dionne <jeff@uClinux.org>
  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/kernel.h>
 20 #include <linux/sched.h>
 21 #include <linux/delay.h>
 22 #include <linux/interrupt.h>
 23 #include <linux/fb.h>
 24 #include <linux/module.h>
 25 #include <linux/mm.h>
 26 #include <linux/console.h>
 27 #include <linux/errno.h>
 28 #include <linux/string.h>
 29 #include <linux/bootmem.h>
 30 #include <linux/seq_file.h>
 31 #include <linux/init.h>
 32 #include <linux/initrd.h>
 33 #include <linux/root_dev.h>
 34 #include <linux/rtc.h>
 35 
 36 #include <asm/setup.h>
 37 #include <asm/irq.h>
 38 #include <asm/machdep.h>
 39 #include <asm/pgtable.h>
 40 #include <asm/sections.h>
 41 
 42 unsigned long memory_start;
 43 unsigned long memory_end;
 44 
 45 EXPORT_SYMBOL(memory_start);
 46 EXPORT_SYMBOL(memory_end);
 47 
 48 char __initdata command_line[COMMAND_LINE_SIZE];
 49 
 50 /* machine dependent timer functions */
 51 void (*mach_sched_init)(irq_handler_t handler) __initdata = NULL;
 52 int (*mach_set_clock_mmss)(unsigned long);
 53 int (*mach_hwclk) (int, struct rtc_time*);
 54 
 55 /* machine dependent reboot functions */
 56 void (*mach_reset)(void);
 57 void (*mach_halt)(void);
 58 void (*mach_power_off)(void);
 59 
 60 #ifdef CONFIG_M68000
 61 #if defined(CONFIG_M68328)
 62 #define CPU_NAME        "MC68328"
 63 #elif defined(CONFIG_M68EZ328)
 64 #define CPU_NAME        "MC68EZ328"
 65 #elif defined(CONFIG_M68VZ328)
 66 #define CPU_NAME        "MC68VZ328"
 67 #else
 68 #define CPU_NAME        "MC68000"
 69 #endif
 70 #endif /* CONFIG_M68000 */
 71 #ifdef CONFIG_M68360
 72 #define CPU_NAME        "MC68360"
 73 #endif
 74 #ifndef CPU_NAME
 75 #define CPU_NAME        "UNKNOWN"
 76 #endif
 77 
 78 /*
 79  * Different cores have different instruction execution timings.
 80  * The old/traditional 68000 cores are basically all the same, at 16.
 81  * The ColdFire cores vary a little, their values are defined in their
 82  * headers. We default to the standard 68000 value here.
 83  */
 84 #ifndef CPU_INSTR_PER_JIFFY
 85 #define CPU_INSTR_PER_JIFFY     16
 86 #endif
 87 
 88 #if defined(CONFIG_UBOOT)
 89 /*
 90  * parse_uboot_commandline
 91  *
 92  * Copies u-boot commandline arguments and store them in the proper linux
 93  * variables.
 94  *
 95  * Assumes:
 96  *      _init_sp global contains the address in the stack pointer when the
 97  *      kernel starts (see head.S::_start)
 98  *
 99  *      U-Boot calling convention:
100  *      (*kernel) (kbd, initrd_start, initrd_end, cmd_start, cmd_end);
101  *
102  *      _init_sp can be parsed as such
103  *
104  *      _init_sp+00 = u-boot cmd after jsr into kernel (skip)
105  *      _init_sp+04 = &kernel board_info (residual data)
106  *      _init_sp+08 = &initrd_start
107  *      _init_sp+12 = &initrd_end
108  *      _init_sp+16 = &cmd_start
109  *      _init_sp+20 = &cmd_end
110  *
111  *      This also assumes that the memory locations pointed to are still
112  *      unmodified. U-boot places them near the end of external SDRAM.
113  *
114  * Argument(s):
115  *      commandp = the linux commandline arg container to fill.
116  *      size     = the sizeof commandp.
117  *
118  * Returns:
119  */
120 static void __init parse_uboot_commandline(char *commandp, int size)
121 {
122         extern unsigned long _init_sp;
123         unsigned long *sp;
124         unsigned long uboot_kbd;
125         unsigned long uboot_initrd_start, uboot_initrd_end;
126         unsigned long uboot_cmd_start, uboot_cmd_end;
127 
128 
129         sp = (unsigned long *)_init_sp;
130         uboot_kbd = sp[1];
131         uboot_initrd_start = sp[2];
132         uboot_initrd_end = sp[3];
133         uboot_cmd_start = sp[4];
134         uboot_cmd_end = sp[5];
135 
136         if (uboot_cmd_start && uboot_cmd_end)
137                 strncpy(commandp, (const char *)uboot_cmd_start, size);
138 #if defined(CONFIG_BLK_DEV_INITRD)
139         if (uboot_initrd_start && uboot_initrd_end &&
140                 (uboot_initrd_end > uboot_initrd_start)) {
141                 initrd_start = uboot_initrd_start;
142                 initrd_end = uboot_initrd_end;
143                 ROOT_DEV = Root_RAM0;
144                 printk(KERN_INFO "initrd at 0x%lx:0x%lx\n",
145                         initrd_start, initrd_end);
146         }
147 #endif /* if defined(CONFIG_BLK_DEV_INITRD) */
148 }
149 #endif /* #if defined(CONFIG_UBOOT) */
150 
151 void __init setup_arch(char **cmdline_p)
152 {
153         int bootmap_size;
154 
155         memory_start = PAGE_ALIGN(_ramstart);
156         memory_end = _ramend;
157 
158         init_mm.start_code = (unsigned long) &_stext;
159         init_mm.end_code = (unsigned long) &_etext;
160         init_mm.end_data = (unsigned long) &_edata;
161         init_mm.brk = (unsigned long) 0;
162 
163         config_BSP(&command_line[0], sizeof(command_line));
164 
165 #if defined(CONFIG_BOOTPARAM)
166         strncpy(&command_line[0], CONFIG_BOOTPARAM_STRING, sizeof(command_line));
167         command_line[sizeof(command_line) - 1] = 0;
168 #endif /* CONFIG_BOOTPARAM */
169 
170 #if defined(CONFIG_UBOOT)
171         /* CONFIG_UBOOT and CONFIG_BOOTPARAM defined, concatenate cmdline */
172         #if defined(CONFIG_BOOTPARAM)
173                 /* Add the whitespace separator */
174                 command_line[strlen(CONFIG_BOOTPARAM_STRING)] = ' ';
175                 /* Parse uboot command line into the rest of the buffer */
176                 parse_uboot_commandline(
177                         &command_line[(strlen(CONFIG_BOOTPARAM_STRING)+1)],
178                         (sizeof(command_line) -
179                         (strlen(CONFIG_BOOTPARAM_STRING)+1)));
180         /* Only CONFIG_UBOOT defined, create cmdline */
181         #else
182                 parse_uboot_commandline(&command_line[0], sizeof(command_line));
183         #endif /* CONFIG_BOOTPARAM */
184         command_line[sizeof(command_line) - 1] = 0;
185 #endif /* CONFIG_UBOOT */
186 
187         printk(KERN_INFO "\x0F\r\n\nuClinux/" CPU_NAME "\n");
188 
189 #ifdef CONFIG_UCDIMM
190         printk(KERN_INFO "uCdimm by Lineo, Inc. <www.lineo.com>\n");
191 #endif
192 #ifdef CONFIG_M68VZ328
193         printk(KERN_INFO "M68VZ328 support by Evan Stawnyczy <e@lineo.ca>\n");
194 #endif
195 #ifdef CONFIG_COLDFIRE
196         printk(KERN_INFO "COLDFIRE port done by Greg Ungerer, gerg@snapgear.com\n");
197 #ifdef CONFIG_M5307
198         printk(KERN_INFO "Modified for M5307 by Dave Miller, dmiller@intellistor.com\n");
199 #endif
200 #ifdef CONFIG_ELITE
201         printk(KERN_INFO "Modified for M5206eLITE by Rob Scott, rscott@mtrob.fdns.net\n");
202 #endif
203 #endif
204         printk(KERN_INFO "Flat model support (C) 1998,1999 Kenneth Albanowski, D. Jeff Dionne\n");
205 
206 #if defined( CONFIG_PILOT ) && defined( CONFIG_M68328 )
207         printk(KERN_INFO "TRG SuperPilot FLASH card support <info@trgnet.com>\n");
208 #endif
209 #if defined( CONFIG_PILOT ) && defined( CONFIG_M68EZ328 )
210         printk(KERN_INFO "PalmV support by Lineo Inc. <jeff@uclinux.com>\n");
211 #endif
212 #if defined (CONFIG_M68360)
213         printk(KERN_INFO "QUICC port done by SED Systems <hamilton@sedsystems.ca>,\n");
214         printk(KERN_INFO "based on 2.0.38 port by Lineo Inc. <mleslie@lineo.com>.\n");
215 #endif
216 #ifdef CONFIG_DRAGEN2
217         printk(KERN_INFO "DragonEngine II board support by Georges Menie\n");
218 #endif
219 #ifdef CONFIG_M5235EVB
220         printk(KERN_INFO "Motorola M5235EVB support (C)2005 Syn-tech Systems, Inc. (Jate Sujjavanich)\n");
221 #endif
222 
223         pr_debug("KERNEL -> TEXT=0x%p-0x%p DATA=0x%p-0x%p BSS=0x%p-0x%p\n",
224                  _stext, _etext, _sdata, _edata, __bss_start, __bss_stop);
225         pr_debug("MEMORY -> ROMFS=0x%p-0x%06lx MEM=0x%06lx-0x%06lx\n ",
226                  __bss_stop, memory_start, memory_start, memory_end);
227 
228         /* Keep a copy of command line */
229         *cmdline_p = &command_line[0];
230         memcpy(boot_command_line, command_line, COMMAND_LINE_SIZE);
231         boot_command_line[COMMAND_LINE_SIZE-1] = 0;
232 
233 #if defined(CONFIG_FRAMEBUFFER_CONSOLE) && defined(CONFIG_DUMMY_CONSOLE)
234         conswitchp = &dummy_con;
235 #endif
236 
237         /*
238          * Give all the memory to the bootmap allocator, tell it to put the
239          * boot mem_map at the start of memory.
240          */
241         bootmap_size = init_bootmem_node(
242                         NODE_DATA(0),
243                         memory_start >> PAGE_SHIFT, /* map goes here */
244                         PAGE_OFFSET >> PAGE_SHIFT,      /* 0 on coldfire */
245                         memory_end >> PAGE_SHIFT);
246         /*
247          * Free the usable memory, we have to make sure we do not free
248          * the bootmem bitmap so we then reserve it after freeing it :-)
249          */
250         free_bootmem(memory_start, memory_end - memory_start);
251         reserve_bootmem(memory_start, bootmap_size, BOOTMEM_DEFAULT);
252 
253 #if defined(CONFIG_UBOOT) && defined(CONFIG_BLK_DEV_INITRD)
254         if ((initrd_start > 0) && (initrd_start < initrd_end) &&
255                         (initrd_end < memory_end))
256                 reserve_bootmem(initrd_start, initrd_end - initrd_start,
257                                  BOOTMEM_DEFAULT);
258 #endif /* if defined(CONFIG_BLK_DEV_INITRD) */
259 
260         /*
261          * Get kmalloc into gear.
262          */
263         paging_init();
264 }
265 
266 /*
267  *      Get CPU information for use by the procfs.
268  */
269 static int show_cpuinfo(struct seq_file *m, void *v)
270 {
271         char *cpu, *mmu, *fpu;
272         u_long clockfreq;
273 
274         cpu = CPU_NAME;
275         mmu = "none";
276         fpu = "none";
277         clockfreq = (loops_per_jiffy * HZ) * CPU_INSTR_PER_JIFFY;
278 
279         seq_printf(m, "CPU:\t\t%s\n"
280                       "MMU:\t\t%s\n"
281                       "FPU:\t\t%s\n"
282                       "Clocking:\t%lu.%1luMHz\n"
283                       "BogoMips:\t%lu.%02lu\n"
284                       "Calibration:\t%lu loops\n",
285                       cpu, mmu, fpu,
286                       clockfreq / 1000000,
287                       (clockfreq / 100000) % 10,
288                       (loops_per_jiffy * HZ) / 500000,
289                       ((loops_per_jiffy * HZ) / 5000) % 100,
290                       (loops_per_jiffy * HZ));
291 
292         return 0;
293 }
294 
295 static void *c_start(struct seq_file *m, loff_t *pos)
296 {
297         return *pos < NR_CPUS ? ((void *) 0x12345678) : NULL;
298 }
299 
300 static void *c_next(struct seq_file *m, void *v, loff_t *pos)
301 {
302         ++*pos;
303         return c_start(m, pos);
304 }
305 
306 static void c_stop(struct seq_file *m, void *v)
307 {
308 }
309 
310 const struct seq_operations cpuinfo_op = {
311         .start  = c_start,
312         .next   = c_next,
313         .stop   = c_stop,
314         .show   = show_cpuinfo,
315 };
316 
317 

~ [ source navigation ] ~ [ diff markup ] ~ [ identifier search ] ~

kernel.org | git.kernel.org | LWN.net | Project Home | Wiki (Japanese) | Wiki (English) | SVN repository | Mail admin

Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.

osdn.jp