2 * linux/arch/m68knommu/kernel/setup.c
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>
12 * 68VZ328 Fixes/support Evan Stawnyczy <e@lineo.ca>
16 * This file handles the architecture-dependent parts of system setup
19 #include <linux/kernel.h>
20 #include <linux/sched.h>
21 #include <linux/delay.h>
22 #include <linux/interrupt.h>
24 #include <linux/module.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>
35 #include <asm/setup.h>
37 #include <asm/machdep.h>
38 #include <asm/pgtable.h>
40 unsigned long memory_start;
41 unsigned long memory_end;
43 EXPORT_SYMBOL(memory_start);
44 EXPORT_SYMBOL(memory_end);
46 char __initdata command_line[COMMAND_LINE_SIZE];
48 /* machine dependent timer functions */
49 void (*mach_gettod)(int*, int*, int*, int*, int*, int*);
50 int (*mach_set_clock_mmss)(unsigned long);
52 /* machine dependent reboot functions */
53 void (*mach_reset)(void);
54 void (*mach_halt)(void);
55 void (*mach_power_off)(void);
60 #ifdef CONFIG_M68EZ328
61 #define CPU "MC68EZ328"
63 #ifdef CONFIG_M68VZ328
64 #define CPU "MC68VZ328"
69 #if defined(CONFIG_M5206)
70 #define CPU "COLDFIRE(m5206)"
72 #if defined(CONFIG_M5206e)
73 #define CPU "COLDFIRE(m5206e)"
75 #if defined(CONFIG_M520x)
76 #define CPU "COLDFIRE(m520x)"
78 #if defined(CONFIG_M523x)
79 #define CPU "COLDFIRE(m523x)"
81 #if defined(CONFIG_M5249)
82 #define CPU "COLDFIRE(m5249)"
84 #if defined(CONFIG_M5271)
85 #define CPU "COLDFIRE(m5270/5271)"
87 #if defined(CONFIG_M5272)
88 #define CPU "COLDFIRE(m5272)"
90 #if defined(CONFIG_M5275)
91 #define CPU "COLDFIRE(m5274/5275)"
93 #if defined(CONFIG_M528x)
94 #define CPU "COLDFIRE(m5280/5282)"
96 #if defined(CONFIG_M5307)
97 #define CPU "COLDFIRE(m5307)"
99 #if defined(CONFIG_M532x)
100 #define CPU "COLDFIRE(m532x)"
102 #if defined(CONFIG_M5407)
103 #define CPU "COLDFIRE(m5407)"
106 #define CPU "UNKNOWN"
109 extern int _stext, _etext, _sdata, _edata, _sbss, _ebss, _end;
110 extern int _ramstart, _ramend;
112 #if defined(CONFIG_UBOOT)
114 * parse_uboot_commandline
116 * Copies u-boot commandline arguments and store them in the proper linux
120 * _init_sp global contains the address in the stack pointer when the
121 * kernel starts (see head.S::_start)
123 * U-Boot calling convention:
124 * (*kernel) (kbd, initrd_start, initrd_end, cmd_start, cmd_end);
126 * _init_sp can be parsed as such
128 * _init_sp+00 = u-boot cmd after jsr into kernel (skip)
129 * _init_sp+04 = &kernel board_info (residual data)
130 * _init_sp+08 = &initrd_start
131 * _init_sp+12 = &initrd_end
132 * _init_sp+16 = &cmd_start
133 * _init_sp+20 = &cmd_end
135 * This also assumes that the memory locations pointed to are still
136 * unmodified. U-boot places them near the end of external SDRAM.
139 * commandp = the linux commandline arg container to fill.
140 * size = the sizeof commandp.
144 void parse_uboot_commandline(char *commandp, int size)
146 extern unsigned long _init_sp;
148 unsigned long uboot_kbd;
149 unsigned long uboot_initrd_start, uboot_initrd_end;
150 unsigned long uboot_cmd_start, uboot_cmd_end;
153 sp = (unsigned long *)_init_sp;
155 uboot_initrd_start = sp[2];
156 uboot_initrd_end = sp[3];
157 uboot_cmd_start = sp[4];
158 uboot_cmd_end = sp[5];
160 if (uboot_cmd_start && uboot_cmd_end)
161 strncpy(commandp, (const char *)uboot_cmd_start, size);
162 #if defined(CONFIG_BLK_DEV_INITRD)
163 if (uboot_initrd_start && uboot_initrd_end &&
164 (uboot_initrd_end > uboot_initrd_start)) {
165 initrd_start = uboot_initrd_start;
166 initrd_end = uboot_initrd_end;
167 ROOT_DEV = Root_RAM0;
168 printk(KERN_INFO "initrd at 0x%lx:0x%lx\n",
169 initrd_start, initrd_end);
171 #endif /* if defined(CONFIG_BLK_DEV_INITRD) */
173 #endif /* #if defined(CONFIG_UBOOT) */
175 void __init setup_arch(char **cmdline_p)
179 memory_start = PAGE_ALIGN(_ramstart);
180 memory_end = _ramend;
182 init_mm.start_code = (unsigned long) &_stext;
183 init_mm.end_code = (unsigned long) &_etext;
184 init_mm.end_data = (unsigned long) &_edata;
185 init_mm.brk = (unsigned long) 0;
187 config_BSP(&command_line[0], sizeof(command_line));
189 #if defined(CONFIG_BOOTPARAM)
190 strncpy(&command_line[0], CONFIG_BOOTPARAM_STRING, sizeof(command_line));
191 command_line[sizeof(command_line) - 1] = 0;
192 #endif /* CONFIG_BOOTPARAM */
194 #if defined(CONFIG_UBOOT)
195 /* CONFIG_UBOOT and CONFIG_BOOTPARAM defined, concatenate cmdline */
196 #if defined(CONFIG_BOOTPARAM)
197 /* Add the whitespace separator */
198 command_line[strlen(CONFIG_BOOTPARAM_STRING)] = ' ';
199 /* Parse uboot command line into the rest of the buffer */
200 parse_uboot_commandline(
201 &command_line[(strlen(CONFIG_BOOTPARAM_STRING)+1)],
202 (sizeof(command_line) -
203 (strlen(CONFIG_BOOTPARAM_STRING)+1)));
204 /* Only CONFIG_UBOOT defined, create cmdline */
206 parse_uboot_commandline(&command_line[0], sizeof(command_line));
207 #endif /* CONFIG_BOOTPARAM */
208 command_line[sizeof(command_line) - 1] = 0;
209 #endif /* CONFIG_UBOOT */
211 printk(KERN_INFO "\x0F\r\n\nuClinux/" CPU "\n");
214 printk(KERN_INFO "uCdimm by Lineo, Inc. <www.lineo.com>\n");
216 #ifdef CONFIG_M68VZ328
217 printk(KERN_INFO "M68VZ328 support by Evan Stawnyczy <e@lineo.ca>\n");
219 #ifdef CONFIG_COLDFIRE
220 printk(KERN_INFO "COLDFIRE port done by Greg Ungerer, gerg@snapgear.com\n");
222 printk(KERN_INFO "Modified for M5307 by Dave Miller, dmiller@intellistor.com\n");
225 printk(KERN_INFO "Modified for M5206eLITE by Rob Scott, rscott@mtrob.fdns.net\n");
228 printk(KERN_INFO "Flat model support (C) 1998,1999 Kenneth Albanowski, D. Jeff Dionne\n");
230 #if defined( CONFIG_PILOT ) && defined( CONFIG_M68328 )
231 printk(KERN_INFO "TRG SuperPilot FLASH card support <info@trgnet.com>\n");
233 #if defined( CONFIG_PILOT ) && defined( CONFIG_M68EZ328 )
234 printk(KERN_INFO "PalmV support by Lineo Inc. <jeff@uclinux.com>\n");
236 #if defined (CONFIG_M68360)
237 printk(KERN_INFO "QUICC port done by SED Systems <hamilton@sedsystems.ca>,\n");
238 printk(KERN_INFO "based on 2.0.38 port by Lineo Inc. <mleslie@lineo.com>.\n");
240 #ifdef CONFIG_DRAGEN2
241 printk(KERN_INFO "DragonEngine II board support by Georges Menie\n");
243 #ifdef CONFIG_M5235EVB
244 printk(KERN_INFO "Motorola M5235EVB support (C)2005 Syn-tech Systems, Inc. (Jate Sujjavanich)\n");
247 pr_debug("KERNEL -> TEXT=0x%06x-0x%06x DATA=0x%06x-0x%06x "
248 "BSS=0x%06x-0x%06x\n", (int) &_stext, (int) &_etext,
249 (int) &_sdata, (int) &_edata,
250 (int) &_sbss, (int) &_ebss);
251 pr_debug("MEMORY -> ROMFS=0x%06x-0x%06x MEM=0x%06x-0x%06x\n ",
252 (int) &_ebss, (int) memory_start,
253 (int) memory_start, (int) memory_end);
255 /* Keep a copy of command line */
256 *cmdline_p = &command_line[0];
257 memcpy(boot_command_line, command_line, COMMAND_LINE_SIZE);
258 boot_command_line[COMMAND_LINE_SIZE-1] = 0;
261 if (strlen(*cmdline_p))
262 printk(KERN_DEBUG "Command line: '%s'\n", *cmdline_p);
265 #if defined(CONFIG_FRAMEBUFFER_CONSOLE) && defined(CONFIG_DUMMY_CONSOLE)
266 conswitchp = &dummy_con;
270 * Give all the memory to the bootmap allocator, tell it to put the
271 * boot mem_map at the start of memory.
273 bootmap_size = init_bootmem_node(
275 memory_start >> PAGE_SHIFT, /* map goes here */
276 PAGE_OFFSET >> PAGE_SHIFT, /* 0 on coldfire */
277 memory_end >> PAGE_SHIFT);
279 * Free the usable memory, we have to make sure we do not free
280 * the bootmem bitmap so we then reserve it after freeing it :-)
282 free_bootmem(memory_start, memory_end - memory_start);
283 reserve_bootmem(memory_start, bootmap_size, BOOTMEM_DEFAULT);
285 #if defined(CONFIG_UBOOT) && defined(CONFIG_BLK_DEV_INITRD)
286 if ((initrd_start > 0) && (initrd_start < initrd_end) &&
287 (initrd_end < memory_end))
288 reserve_bootmem(initrd_start, initrd_end - initrd_start,
290 #endif /* if defined(CONFIG_BLK_DEV_INITRD) */
293 * Get kmalloc into gear.
299 * Get CPU information for use by the procfs.
301 static int show_cpuinfo(struct seq_file *m, void *v)
303 char *cpu, *mmu, *fpu;
310 #ifdef CONFIG_COLDFIRE
311 clockfreq = (loops_per_jiffy * HZ) * 3;
313 clockfreq = (loops_per_jiffy * HZ) * 16;
316 seq_printf(m, "CPU:\t\t%s\n"
319 "Clocking:\t%lu.%1luMHz\n"
320 "BogoMips:\t%lu.%02lu\n"
321 "Calibration:\t%lu loops\n",
324 (clockfreq / 100000) % 10,
325 (loops_per_jiffy * HZ) / 500000,
326 ((loops_per_jiffy * HZ) / 5000) % 100,
327 (loops_per_jiffy * HZ));
332 static void *c_start(struct seq_file *m, loff_t *pos)
334 return *pos < NR_CPUS ? ((void *) 0x12345678) : NULL;
337 static void *c_next(struct seq_file *m, void *v, loff_t *pos)
340 return c_start(m, pos);
343 static void c_stop(struct seq_file *m, void *v)
347 const struct seq_operations cpuinfo_op = {
351 .show = show_cpuinfo,