aboutsummaryrefslogtreecommitdiffstats
path: root/arch/arm26/kernel/setup.c
diff options
context:
space:
mode:
authorAdrian Bunk <bunk@stusta.de>2007-07-31 03:38:19 -0400
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-07-31 18:39:39 -0400
commit99eb8a550dbccc0e1f6c7e866fe421810e0585f6 (patch)
tree130c6e3338a0655ba74355eba83afab9261e1ed0 /arch/arm26/kernel/setup.c
parent0d0ed42e5ca2e22465c591341839c18025748fe8 (diff)
Remove the arm26 port
The arm26 port has been in a state where it was far from even compiling for quite some time. Ian Molton agreed with the removal. Signed-off-by: Adrian Bunk <bunk@stusta.de> Cc: Ian Molton <spyro@f2s.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/arm26/kernel/setup.c')
-rw-r--r--arch/arm26/kernel/setup.c572
1 files changed, 0 insertions, 572 deletions
diff --git a/arch/arm26/kernel/setup.c b/arch/arm26/kernel/setup.c
deleted file mode 100644
index 0e006c6cd5a0..000000000000
--- a/arch/arm26/kernel/setup.c
+++ /dev/null
@@ -1,572 +0,0 @@
1/*
2 * linux/arch/arm26/kernel/setup.c
3 *
4 * Copyright (C) 1995-2001 Russell King
5 * Copyright (C) 2003 Ian Molton
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
10 */
11#include <linux/kernel.h>
12#include <linux/stddef.h>
13#include <linux/ioport.h>
14#include <linux/delay.h>
15#include <linux/utsname.h>
16#include <linux/blkdev.h>
17#include <linux/console.h>
18#include <linux/bootmem.h>
19#include <linux/seq_file.h>
20#include <linux/screen_info.h>
21#include <linux/init.h>
22#include <linux/root_dev.h>
23
24#include <asm/elf.h>
25#include <asm/hardware.h>
26#include <asm/io.h>
27#include <asm/procinfo.h>
28#include <asm/setup.h>
29#include <asm/mach-types.h>
30#include <asm/tlbflush.h>
31
32#include <asm/irqchip.h>
33
34#ifndef MEM_SIZE
35#define MEM_SIZE (16*1024*1024)
36#endif
37
38#ifdef CONFIG_PREEMPT
39DEFINE_SPINLOCK(kernel_flag);
40#endif
41
42#if defined(CONFIG_FPE_NWFPE)
43char fpe_type[8];
44
45static int __init fpe_setup(char *line)
46{
47 memcpy(fpe_type, line, 8);
48 return 1;
49}
50
51__setup("fpe=", fpe_setup);
52#endif
53
54extern void paging_init(struct meminfo *);
55extern void convert_to_tag_list(struct tag *tags);
56extern void squash_mem_tags(struct tag *tag);
57extern void bootmem_init(struct meminfo *);
58extern int root_mountflags;
59extern int _stext, _text, _etext, _edata, _end;
60#ifdef CONFIG_XIP_KERNEL
61extern int _endtext, _sdata;
62#endif
63
64
65unsigned int processor_id;
66unsigned int __machine_arch_type;
67unsigned int system_rev;
68unsigned int system_serial_low;
69unsigned int system_serial_high;
70unsigned int elf_hwcap;
71unsigned int memc_ctrl_reg;
72unsigned int number_mfm_drives;
73
74struct processor processor;
75
76char elf_platform[ELF_PLATFORM_SIZE];
77
78unsigned long phys_initrd_start __initdata = 0;
79unsigned long phys_initrd_size __initdata = 0;
80static struct meminfo meminfo __initdata = { 0, };
81static struct proc_info_item proc_info;
82static const char *machine_name;
83static char __initdata command_line[COMMAND_LINE_SIZE];
84
85static char default_command_line[COMMAND_LINE_SIZE] __initdata = CONFIG_CMDLINE;
86
87/*
88 * Standard memory resources
89 */
90static struct resource mem_res[] = {
91 { "Video RAM", 0, 0, IORESOURCE_MEM },
92 { "Kernel code", 0, 0, IORESOURCE_MEM },
93 { "Kernel data", 0, 0, IORESOURCE_MEM }
94};
95
96#define video_ram mem_res[0]
97#define kernel_code mem_res[1]
98#define kernel_data mem_res[2]
99
100static struct resource io_res[] = {
101 { "reserved", 0x3bc, 0x3be, IORESOURCE_IO | IORESOURCE_BUSY },
102 { "reserved", 0x378, 0x37f, IORESOURCE_IO | IORESOURCE_BUSY },
103 { "reserved", 0x278, 0x27f, IORESOURCE_IO | IORESOURCE_BUSY }
104};
105
106#define lp0 io_res[0]
107#define lp1 io_res[1]
108#define lp2 io_res[2]
109
110#define dump_cpu_info() do { } while (0)
111
112static void __init setup_processor(void)
113{
114 extern struct proc_info_list __proc_info_begin, __proc_info_end;
115 struct proc_info_list *list;
116
117 /*
118 * locate processor in the list of supported processor
119 * types. The linker builds this table for us from the
120 * entries in arch/arm26/mm/proc-*.S
121 */
122 for (list = &__proc_info_begin; list < &__proc_info_end ; list++)
123 if ((processor_id & list->cpu_mask) == list->cpu_val)
124 break;
125
126 /*
127 * If processor type is unrecognised, then we
128 * can do nothing...
129 */
130 if (list >= &__proc_info_end) {
131 printk("CPU configuration botched (ID %08x), unable "
132 "to continue.\n", processor_id);
133 while (1);
134 }
135
136 proc_info = *list->info;
137 processor = *list->proc;
138
139
140 printk("CPU: %s %s revision %d\n",
141 proc_info.manufacturer, proc_info.cpu_name,
142 (int)processor_id & 15);
143
144 dump_cpu_info();
145
146 sprintf(init_utsname()->machine, "%s", list->arch_name);
147 sprintf(elf_platform, "%s", list->elf_name);
148 elf_hwcap = list->elf_hwcap;
149
150 cpu_proc_init();
151}
152
153/*
154 * Initial parsing of the command line. We need to pick out the
155 * memory size. We look for mem=size@start, where start and size
156 * are "size[KkMm]"
157 */
158static void __init
159parse_cmdline(struct meminfo *mi, char **cmdline_p, char *from)
160{
161 char c = ' ', *to = command_line;
162 int usermem = 0, len = 0;
163
164 for (;;) {
165 if (c == ' ' && !memcmp(from, "mem=", 4)) {
166 unsigned long size, start;
167
168 if (to != command_line)
169 to -= 1;
170
171 /*
172 * If the user specifies memory size, we
173 * blow away any automatically generated
174 * size.
175 */
176 if (usermem == 0) {
177 usermem = 1;
178 mi->nr_banks = 0;
179 }
180
181 start = PHYS_OFFSET;
182 size = memparse(from + 4, &from);
183 if (*from == '@')
184 start = memparse(from + 1, &from);
185
186 mi->bank[mi->nr_banks].start = start;
187 mi->bank[mi->nr_banks].size = size;
188 mi->bank[mi->nr_banks].node = PHYS_TO_NID(start);
189 mi->nr_banks += 1;
190 }
191 c = *from++;
192 if (!c)
193 break;
194 if (COMMAND_LINE_SIZE <= ++len)
195 break;
196 *to++ = c;
197 }
198 *to = '\0';
199 *cmdline_p = command_line;
200}
201
202static void __init
203setup_ramdisk(int doload, int prompt, int image_start, unsigned int rd_sz)
204{
205#ifdef CONFIG_BLK_DEV_RAM
206 extern int rd_size, rd_image_start, rd_prompt, rd_doload;
207
208 rd_image_start = image_start;
209 rd_prompt = prompt;
210 rd_doload = doload;
211
212 if (rd_sz)
213 rd_size = rd_sz;
214#endif
215}
216
217static void __init
218request_standard_resources(struct meminfo *mi)
219{
220 struct resource *res;
221 int i;
222
223 kernel_code.start = init_mm.start_code;
224 kernel_code.end = init_mm.end_code - 1;
225#ifdef CONFIG_XIP_KERNEL
226 kernel_data.start = init_mm.start_data;
227#else
228 kernel_data.start = init_mm.end_code;
229#endif
230 kernel_data.end = init_mm.brk - 1;
231
232 for (i = 0; i < mi->nr_banks; i++) {
233 unsigned long virt_start, virt_end;
234
235 if (mi->bank[i].size == 0)
236 continue;
237
238 virt_start = mi->bank[i].start;
239 virt_end = virt_start + mi->bank[i].size - 1;
240
241 res = alloc_bootmem_low(sizeof(*res));
242 res->name = "System RAM";
243 res->start = virt_start;
244 res->end = virt_end;
245 res->flags = IORESOURCE_MEM | IORESOURCE_BUSY;
246
247 request_resource(&iomem_resource, res);
248
249 if (kernel_code.start >= res->start &&
250 kernel_code.end <= res->end)
251 request_resource(res, &kernel_code);
252 if (kernel_data.start >= res->start &&
253 kernel_data.end <= res->end)
254 request_resource(res, &kernel_data);
255 }
256
257/* FIXME - needed? if (mdesc->video_start) {
258 video_ram.start = mdesc->video_start;
259 video_ram.end = mdesc->video_end;
260 request_resource(&iomem_resource, &video_ram);
261 }*/
262
263 /*
264 * Some machines don't have the possibility of ever
265 * possessing lp1 or lp2
266 */
267 if (0) /* FIXME - need to do this for A5k at least */
268 request_resource(&ioport_resource, &lp0);
269}
270
271/*
272 * Tag parsing.
273 *
274 * This is the new way of passing data to the kernel at boot time. Rather
275 * than passing a fixed inflexible structure to the kernel, we pass a list
276 * of variable-sized tags to the kernel. The first tag must be a ATAG_CORE
277 * tag for the list to be recognised (to distinguish the tagged list from
278 * a param_struct). The list is terminated with a zero-length tag (this tag
279 * is not parsed in any way).
280 */
281static int __init parse_tag_core(const struct tag *tag)
282{
283 if (tag->hdr.size > 2) {
284 if ((tag->u.core.flags & 1) == 0)
285 root_mountflags &= ~MS_RDONLY;
286 ROOT_DEV = old_decode_dev(tag->u.core.rootdev);
287 }
288 return 0;
289}
290
291__tagtable(ATAG_CORE, parse_tag_core);
292
293static int __init parse_tag_mem32(const struct tag *tag)
294{
295 if (meminfo.nr_banks >= NR_BANKS) {
296 printk(KERN_WARNING
297 "Ignoring memory bank 0x%08x size %dKB\n",
298 tag->u.mem.start, tag->u.mem.size / 1024);
299 return -EINVAL;
300 }
301 meminfo.bank[meminfo.nr_banks].start = tag->u.mem.start;
302 meminfo.bank[meminfo.nr_banks].size = tag->u.mem.size;
303 meminfo.bank[meminfo.nr_banks].node = PHYS_TO_NID(tag->u.mem.start);
304 meminfo.nr_banks += 1;
305
306 return 0;
307}
308
309__tagtable(ATAG_MEM, parse_tag_mem32);
310
311#if defined(CONFIG_DUMMY_CONSOLE)
312struct screen_info screen_info = {
313 .orig_video_lines = 30,
314 .orig_video_cols = 80,
315 .orig_video_mode = 0,
316 .orig_video_ega_bx = 0,
317 .orig_video_isVGA = 1,
318 .orig_video_points = 8
319};
320
321static int __init parse_tag_videotext(const struct tag *tag)
322{
323 screen_info.orig_x = tag->u.videotext.x;
324 screen_info.orig_y = tag->u.videotext.y;
325 screen_info.orig_video_page = tag->u.videotext.video_page;
326 screen_info.orig_video_mode = tag->u.videotext.video_mode;
327 screen_info.orig_video_cols = tag->u.videotext.video_cols;
328 screen_info.orig_video_ega_bx = tag->u.videotext.video_ega_bx;
329 screen_info.orig_video_lines = tag->u.videotext.video_lines;
330 screen_info.orig_video_isVGA = tag->u.videotext.video_isvga;
331 screen_info.orig_video_points = tag->u.videotext.video_points;
332 return 0;
333}
334
335__tagtable(ATAG_VIDEOTEXT, parse_tag_videotext);
336#endif
337
338static int __init parse_tag_acorn(const struct tag *tag)
339{
340 memc_ctrl_reg = tag->u.acorn.memc_control_reg;
341 number_mfm_drives = tag->u.acorn.adfsdrives;
342 return 0;
343}
344
345__tagtable(ATAG_ACORN, parse_tag_acorn);
346
347static int __init parse_tag_ramdisk(const struct tag *tag)
348{
349 setup_ramdisk((tag->u.ramdisk.flags & 1) == 0,
350 (tag->u.ramdisk.flags & 2) == 0,
351 tag->u.ramdisk.start, tag->u.ramdisk.size);
352 return 0;
353}
354
355__tagtable(ATAG_RAMDISK, parse_tag_ramdisk);
356
357static int __init parse_tag_initrd(const struct tag *tag)
358{
359 printk(KERN_WARNING "ATAG_INITRD is deprecated; please update your bootloader. \n");
360 phys_initrd_start = (unsigned long)tag->u.initrd.start;
361 phys_initrd_size = (unsigned long)tag->u.initrd.size;
362 return 0;
363}
364
365__tagtable(ATAG_INITRD, parse_tag_initrd);
366
367static int __init parse_tag_initrd2(const struct tag *tag)
368{
369 printk(KERN_WARNING "ATAG_INITRD is deprecated; please update your bootloader. \n");
370 phys_initrd_start = (unsigned long)tag->u.initrd.start;
371 phys_initrd_size = (unsigned long)tag->u.initrd.size;
372 return 0;
373}
374
375__tagtable(ATAG_INITRD2, parse_tag_initrd2);
376
377static int __init parse_tag_serialnr(const struct tag *tag)
378{
379 system_serial_low = tag->u.serialnr.low;
380 system_serial_high = tag->u.serialnr.high;
381 return 0;
382}
383
384__tagtable(ATAG_SERIAL, parse_tag_serialnr);
385
386static int __init parse_tag_revision(const struct tag *tag)
387{
388 system_rev = tag->u.revision.rev;
389 return 0;
390}
391
392__tagtable(ATAG_REVISION, parse_tag_revision);
393
394static int __init parse_tag_cmdline(const struct tag *tag)
395{
396 strncpy(default_command_line, tag->u.cmdline.cmdline, COMMAND_LINE_SIZE);
397 default_command_line[COMMAND_LINE_SIZE - 1] = '\0';
398 return 0;
399}
400
401__tagtable(ATAG_CMDLINE, parse_tag_cmdline);
402
403/*
404 * Scan the tag table for this tag, and call its parse function.
405 * The tag table is built by the linker from all the __tagtable
406 * declarations.
407 */
408static int __init parse_tag(const struct tag *tag)
409{
410 extern struct tagtable __tagtable_begin, __tagtable_end;
411 struct tagtable *t;
412
413 for (t = &__tagtable_begin; t < &__tagtable_end; t++)
414 if (tag->hdr.tag == t->tag) {
415 t->parse(tag);
416 break;
417 }
418
419 return t < &__tagtable_end;
420}
421
422/*
423 * Parse all tags in the list, checking both the global and architecture
424 * specific tag tables.
425 */
426static void __init parse_tags(const struct tag *t)
427{
428 for (; t->hdr.size; t = tag_next(t))
429 if (!parse_tag(t))
430 printk(KERN_WARNING
431 "Ignoring unrecognised tag 0x%08x\n",
432 t->hdr.tag);
433}
434
435/*
436 * This holds our defaults.
437 */
438static struct init_tags {
439 struct tag_header hdr1;
440 struct tag_core core;
441 struct tag_header hdr2;
442 struct tag_mem32 mem;
443 struct tag_header hdr3;
444} init_tags __initdata = {
445 { tag_size(tag_core), ATAG_CORE },
446 { 1, PAGE_SIZE, 0xff },
447 { tag_size(tag_mem32), ATAG_MEM },
448 { MEM_SIZE, PHYS_OFFSET },
449 { 0, ATAG_NONE }
450};
451
452void __init setup_arch(char **cmdline_p)
453{
454 struct tag *tags = (struct tag *)&init_tags;
455 char *from = default_command_line;
456
457 setup_processor();
458 if(machine_arch_type == MACH_TYPE_A5K)
459 machine_name = "A5000";
460 else if(machine_arch_type == MACH_TYPE_ARCHIMEDES)
461 machine_name = "Archimedes";
462 else
463 machine_name = "UNKNOWN";
464
465 //FIXME - the tag struct is always copied here but this is a block
466 // of RAM that is accidentally reserved along with video RAM. perhaps
467 // it would be a good idea to explicitly reserve this?
468
469 tags = (struct tag *)0x0207c000;
470
471 /*
472 * If we have the old style parameters, convert them to
473 * a tag list.
474 */
475 if (tags->hdr.tag != ATAG_CORE)
476 convert_to_tag_list(tags);
477 if (tags->hdr.tag != ATAG_CORE)
478 tags = (struct tag *)&init_tags;
479 if (tags->hdr.tag == ATAG_CORE) {
480 if (meminfo.nr_banks != 0)
481 squash_mem_tags(tags);
482 parse_tags(tags);
483 }
484
485 init_mm.start_code = (unsigned long) &_text;
486#ifndef CONFIG_XIP_KERNEL
487 init_mm.end_code = (unsigned long) &_etext;
488#else
489 init_mm.end_code = (unsigned long) &_endtext;
490 init_mm.start_data = (unsigned long) &_sdata;
491#endif
492 init_mm.end_data = (unsigned long) &_edata;
493 init_mm.brk = (unsigned long) &_end;
494
495 memcpy(boot_command_line, from, COMMAND_LINE_SIZE);
496 boot_command_line[COMMAND_LINE_SIZE-1] = '\0';
497 parse_cmdline(&meminfo, cmdline_p, from);
498 bootmem_init(&meminfo);
499 paging_init(&meminfo);
500 request_standard_resources(&meminfo);
501
502#ifdef CONFIG_VT
503#if defined(CONFIG_DUMMY_CONSOLE)
504 conswitchp = &dummy_con;
505#endif
506#endif
507}
508
509static const char *hwcap_str[] = {
510 "swp",
511 "half",
512 "thumb",
513 "26bit",
514 "fastmult",
515 "fpa",
516 "vfp",
517 "edsp",
518 NULL
519};
520
521static int c_show(struct seq_file *m, void *v)
522{
523 int i;
524
525 seq_printf(m, "Processor\t: %s %s rev %d (%s)\n",
526 proc_info.manufacturer, proc_info.cpu_name,
527 (int)processor_id & 15, elf_platform);
528
529 seq_printf(m, "BogoMIPS\t: %lu.%02lu\n",
530 loops_per_jiffy / (500000/HZ),
531 (loops_per_jiffy / (5000/HZ)) % 100);
532
533 /* dump out the processor features */
534 seq_puts(m, "Features\t: ");
535
536 for (i = 0; hwcap_str[i]; i++)
537 if (elf_hwcap & (1 << i))
538 seq_printf(m, "%s ", hwcap_str[i]);
539
540 seq_puts(m, "\n");
541
542 seq_printf(m, "CPU part\t\t: %07x\n", processor_id >> 4);
543 seq_printf(m, "CPU revision\t: %d\n\n", processor_id & 15);
544 seq_printf(m, "Hardware\t: %s\n", machine_name);
545 seq_printf(m, "Revision\t: %04x\n", system_rev);
546 seq_printf(m, "Serial\t\t: %08x%08x\n",
547 system_serial_high, system_serial_low);
548
549 return 0;
550}
551
552static void *c_start(struct seq_file *m, loff_t *pos)
553{
554 return *pos < 1 ? (void *)1 : NULL;
555}
556
557static void *c_next(struct seq_file *m, void *v, loff_t *pos)
558{
559 ++*pos;
560 return NULL;
561}
562
563static void c_stop(struct seq_file *m, void *v)
564{
565}
566
567struct seq_operations cpuinfo_op = {
568 .start = c_start,
569 .next = c_next,
570 .stop = c_stop,
571 .show = c_show
572};
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-03 20:14:52 -0500