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[linux.git] / arch / m68k / kernel / setup_no.c
1 // SPDX-License-Identifier: GPL-2.0
2 /*
3  *  linux/arch/m68knommu/kernel/setup.c
4  *
5  *  Copyright (C) 1999-2007  Greg Ungerer ([email protected])
6  *  Copyright (C) 1998,1999  D. Jeff Dionne <[email protected]>
7  *  Copyleft  ()) 2000       James D. Schettine {[email protected]}
8  *  Copyright (C) 1998       Kenneth Albanowski <[email protected]>
9  *  Copyright (C) 1995       Hamish Macdonald
10  *  Copyright (C) 2000       Lineo Inc. (www.lineo.com)
11  *  Copyright (C) 2001       Lineo, Inc. <www.lineo.com>
12  *
13  *  68VZ328 Fixes/support    Evan Stawnyczy <[email protected]>
14  */
15
16 /*
17  * This file handles the architecture-dependent parts of system setup
18  */
19
20 #include <linux/kernel.h>
21 #include <linux/sched.h>
22 #include <linux/delay.h>
23 #include <linux/interrupt.h>
24 #include <linux/fb.h>
25 #include <linux/module.h>
26 #include <linux/mm.h>
27 #include <linux/console.h>
28 #include <linux/errno.h>
29 #include <linux/string.h>
30 #include <linux/memblock.h>
31 #include <linux/seq_file.h>
32 #include <linux/init.h>
33 #include <linux/initrd.h>
34 #include <linux/root_dev.h>
35 #include <linux/rtc.h>
36
37 #include <asm/setup.h>
38 #include <asm/bootinfo.h>
39 #include <asm/irq.h>
40 #include <asm/machdep.h>
41 #include <asm/sections.h>
42
43 unsigned long memory_start;
44 unsigned long memory_end;
45
46 EXPORT_SYMBOL(memory_start);
47 EXPORT_SYMBOL(memory_end);
48
49 char __initdata command_line[COMMAND_LINE_SIZE];
50
51 /* machine dependent timer functions */
52 void (*mach_sched_init)(void) __initdata = NULL;
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 #ifndef CPU_NAME
72 #define CPU_NAME        "UNKNOWN"
73 #endif
74
75 /*
76  * Different cores have different instruction execution timings.
77  * The old/traditional 68000 cores are basically all the same, at 16.
78  * The ColdFire cores vary a little, their values are defined in their
79  * headers. We default to the standard 68000 value here.
80  */
81 #ifndef CPU_INSTR_PER_JIFFY
82 #define CPU_INSTR_PER_JIFFY     16
83 #endif
84
85 void __init setup_arch(char **cmdline_p)
86 {
87         memory_start = PAGE_ALIGN(_ramstart);
88         memory_end = _ramend;
89
90         setup_initial_init_mm(_stext, _etext, _edata, NULL);
91
92         config_BSP(&command_line[0], sizeof(command_line));
93
94 #if defined(CONFIG_BOOTPARAM)
95         strncpy(&command_line[0], CONFIG_BOOTPARAM_STRING, sizeof(command_line));
96         command_line[sizeof(command_line) - 1] = 0;
97 #endif /* CONFIG_BOOTPARAM */
98
99         process_uboot_commandline(&command_line[0], sizeof(command_line));
100
101         pr_info("uClinux with CPU " CPU_NAME "\n");
102
103 #ifdef CONFIG_UCDIMM
104         pr_info("uCdimm by Lineo, Inc. <www.lineo.com>\n");
105 #endif
106 #ifdef CONFIG_M68328
107         pr_info("68328 support D. Jeff Dionne <[email protected]>\n");
108         pr_info("68328 support Kenneth Albanowski <[email protected]>\n");
109 #endif
110 #ifdef CONFIG_M68EZ328
111         pr_info("68EZ328 DragonBallEZ support (C) 1999 Rt-Control, Inc\n");
112 #endif
113 #ifdef CONFIG_M68VZ328
114         pr_info("M68VZ328 support by Evan Stawnyczy <[email protected]>\n");
115         pr_info("68VZ328 DragonBallVZ support (c) 2001 Lineo, Inc.\n");
116 #endif
117 #ifdef CONFIG_COLDFIRE
118         pr_info("COLDFIRE port done by Greg Ungerer, [email protected]\n");
119 #ifdef CONFIG_M5307
120         pr_info("Modified for M5307 by Dave Miller, [email protected]\n");
121 #endif
122 #ifdef CONFIG_ELITE
123         pr_info("Modified for M5206eLITE by Rob Scott, [email protected]\n");
124 #endif
125 #endif
126         pr_info("Flat model support (C) 1998,1999 Kenneth Albanowski, D. Jeff Dionne\n");
127
128 #if defined( CONFIG_PILOT ) && defined( CONFIG_M68328 )
129         pr_info("68328/Pilot support Bernhard Kuhn <[email protected]>\n");
130         pr_info("TRG SuperPilot FLASH card support <[email protected]>\n");
131 #endif
132 #if defined( CONFIG_PILOT ) && defined( CONFIG_M68EZ328 )
133         pr_info("PalmV support by Lineo Inc. <[email protected]>\n");
134 #endif
135 #ifdef CONFIG_DRAGEN2
136         pr_info("DragonEngine II board support by Georges Menie\n");
137 #endif
138 #ifdef CONFIG_M5235EVB
139         pr_info("Motorola M5235EVB support (C)2005 Syn-tech Systems, Inc. (Jate Sujjavanich)\n");
140 #endif
141
142         pr_debug("KERNEL -> TEXT=0x%p-0x%p DATA=0x%p-0x%p BSS=0x%p-0x%p\n",
143                  _stext, _etext, _sdata, _edata, __bss_start, __bss_stop);
144         pr_debug("MEMORY -> ROMFS=0x%p-0x%06lx MEM=0x%06lx-0x%06lx\n ",
145                  __bss_stop, memory_start, memory_start, memory_end);
146
147         memblock_add(_rambase, memory_end - _rambase);
148         memblock_reserve(_rambase, memory_start - _rambase);
149
150         /* Keep a copy of command line */
151         *cmdline_p = &command_line[0];
152         memcpy(boot_command_line, command_line, COMMAND_LINE_SIZE);
153         boot_command_line[COMMAND_LINE_SIZE-1] = 0;
154
155         /*
156          * Give all the memory to the bootmap allocator, tell it to put the
157          * boot mem_map at the start of memory.
158          */
159         min_low_pfn = PFN_DOWN(memory_start);
160         max_pfn = max_low_pfn = PFN_DOWN(memory_end);
161
162 #if defined(CONFIG_UBOOT) && defined(CONFIG_BLK_DEV_INITRD)
163         if ((initrd_start > 0) && (initrd_start < initrd_end) &&
164                         (initrd_end < memory_end))
165                 memblock_reserve(initrd_start, initrd_end - initrd_start);
166 #endif /* if defined(CONFIG_BLK_DEV_INITRD) */
167
168         /*
169          * Get kmalloc into gear.
170          */
171         paging_init();
172 }
173
174 /*
175  *      Get CPU information for use by the procfs.
176  */
177 static int show_cpuinfo(struct seq_file *m, void *v)
178 {
179         char *cpu, *mmu, *fpu;
180         u_long clockfreq;
181
182         cpu = CPU_NAME;
183         mmu = "none";
184         fpu = "none";
185         clockfreq = (loops_per_jiffy * HZ) * CPU_INSTR_PER_JIFFY;
186
187         seq_printf(m, "CPU:\t\t%s\n"
188                       "MMU:\t\t%s\n"
189                       "FPU:\t\t%s\n"
190                       "Clocking:\t%lu.%1luMHz\n"
191                       "BogoMips:\t%lu.%02lu\n"
192                       "Calibration:\t%lu loops\n",
193                       cpu, mmu, fpu,
194                       clockfreq / 1000000,
195                       (clockfreq / 100000) % 10,
196                       (loops_per_jiffy * HZ) / 500000,
197                       ((loops_per_jiffy * HZ) / 5000) % 100,
198                       (loops_per_jiffy * HZ));
199
200         return 0;
201 }
202
203 static void *c_start(struct seq_file *m, loff_t *pos)
204 {
205         return *pos < NR_CPUS ? ((void *) 0x12345678) : NULL;
206 }
207
208 static void *c_next(struct seq_file *m, void *v, loff_t *pos)
209 {
210         ++*pos;
211         return c_start(m, pos);
212 }
213
214 static void c_stop(struct seq_file *m, void *v)
215 {
216 }
217
218 const struct seq_operations cpuinfo_op = {
219         .start  = c_start,
220         .next   = c_next,
221         .stop   = c_stop,
222         .show   = show_cpuinfo,
223 };
224
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