1
2
3
4
5
6
7
8
9#include <linux/screen_info.h>
10#include <linux/ioport.h>
11#include <linux/init.h>
12#include <linux/initrd.h>
13#include <linux/bootmem.h>
14#include <linux/console.h>
15#include <linux/root_dev.h>
16#include <linux/utsname.h>
17#include <linux/nodemask.h>
18#include <linux/cpu.h>
19#include <linux/pfn.h>
20#include <linux/fs.h>
21#include <linux/mm.h>
22#include <linux/kexec.h>
23#include <linux/module.h>
24#include <linux/smp.h>
25#include <linux/err.h>
26#include <linux/crash_dump.h>
27#include <linux/mmzone.h>
28#include <linux/clk.h>
29#include <linux/delay.h>
30#include <linux/platform_device.h>
31#include <linux/memblock.h>
32#include <asm/uaccess.h>
33#include <asm/io.h>
34#include <asm/page.h>
35#include <asm/elf.h>
36#include <asm/sections.h>
37#include <asm/irq.h>
38#include <asm/setup.h>
39#include <asm/clock.h>
40#include <asm/smp.h>
41#include <asm/mmu_context.h>
42#include <asm/mmzone.h>
43#include <asm/sparsemem.h>
44
45
46
47
48
49
50struct sh_cpuinfo cpu_data[NR_CPUS] __read_mostly = {
51 [0] = {
52 .type = CPU_SH_NONE,
53 .family = CPU_FAMILY_UNKNOWN,
54 .loops_per_jiffy = 10000000,
55 .phys_bits = MAX_PHYSMEM_BITS,
56 },
57};
58EXPORT_SYMBOL(cpu_data);
59
60
61
62
63
64struct sh_machine_vector sh_mv = { .mv_name = "generic", };
65EXPORT_SYMBOL(sh_mv);
66
67#ifdef CONFIG_VT
68struct screen_info screen_info;
69#endif
70
71extern int root_mountflags;
72
73#define RAMDISK_IMAGE_START_MASK 0x07FF
74#define RAMDISK_PROMPT_FLAG 0x8000
75#define RAMDISK_LOAD_FLAG 0x4000
76
77static char __initdata command_line[COMMAND_LINE_SIZE] = { 0, };
78
79static struct resource code_resource = {
80 .name = "Kernel code",
81 .flags = IORESOURCE_BUSY | IORESOURCE_MEM,
82};
83
84static struct resource data_resource = {
85 .name = "Kernel data",
86 .flags = IORESOURCE_BUSY | IORESOURCE_MEM,
87};
88
89static struct resource bss_resource = {
90 .name = "Kernel bss",
91 .flags = IORESOURCE_BUSY | IORESOURCE_MEM,
92};
93
94unsigned long memory_start;
95EXPORT_SYMBOL(memory_start);
96unsigned long memory_end = 0;
97EXPORT_SYMBOL(memory_end);
98unsigned long memory_limit = 0;
99
100static struct resource mem_resources[MAX_NUMNODES];
101
102int l1i_cache_shape, l1d_cache_shape, l2_cache_shape;
103
104static int __init early_parse_mem(char *p)
105{
106 if (!p)
107 return 1;
108
109 memory_limit = PAGE_ALIGN(memparse(p, &p));
110
111 pr_notice("Memory limited to %ldMB\n", memory_limit >> 20);
112
113 return 0;
114}
115early_param("mem", early_parse_mem);
116
117void __init check_for_initrd(void)
118{
119#ifdef CONFIG_BLK_DEV_INITRD
120 unsigned long start, end;
121
122
123
124
125
126 if (!LOADER_TYPE || !INITRD_START || !INITRD_SIZE)
127 goto disable;
128
129 start = INITRD_START + __MEMORY_START;
130 end = start + INITRD_SIZE;
131
132 if (unlikely(end <= start))
133 goto disable;
134 if (unlikely(start & ~PAGE_MASK)) {
135 pr_err("initrd must be page aligned\n");
136 goto disable;
137 }
138
139 if (unlikely(start < __MEMORY_START)) {
140 pr_err("initrd start (%08lx) < __MEMORY_START(%x)\n",
141 start, __MEMORY_START);
142 goto disable;
143 }
144
145 if (unlikely(end > memblock_end_of_DRAM())) {
146 pr_err("initrd extends beyond end of memory "
147 "(0x%08lx > 0x%08lx)\ndisabling initrd\n",
148 end, (unsigned long)memblock_end_of_DRAM());
149 goto disable;
150 }
151
152
153
154
155
156
157 ROOT_DEV = Root_RAM0;
158
159
160
161
162 initrd_start = (unsigned long)__va(start);
163 initrd_end = initrd_start + INITRD_SIZE;
164
165 memblock_reserve(__pa(initrd_start), INITRD_SIZE);
166
167 return;
168
169disable:
170 pr_info("initrd disabled\n");
171 initrd_start = initrd_end = 0;
172#endif
173}
174
175void __cpuinit calibrate_delay(void)
176{
177 struct clk *clk = clk_get(NULL, "cpu_clk");
178
179 if (IS_ERR(clk))
180 panic("Need a sane CPU clock definition!");
181
182 loops_per_jiffy = (clk_get_rate(clk) >> 1) / HZ;
183
184 printk(KERN_INFO "Calibrating delay loop (skipped)... "
185 "%lu.%02lu BogoMIPS PRESET (lpj=%lu)\n",
186 loops_per_jiffy/(500000/HZ),
187 (loops_per_jiffy/(5000/HZ)) % 100,
188 loops_per_jiffy);
189}
190
191void __init __add_active_range(unsigned int nid, unsigned long start_pfn,
192 unsigned long end_pfn)
193{
194 struct resource *res = &mem_resources[nid];
195 unsigned long start, end;
196
197 WARN_ON(res->name);
198
199 start = start_pfn << PAGE_SHIFT;
200 end = end_pfn << PAGE_SHIFT;
201
202 res->name = "System RAM";
203 res->start = start;
204 res->end = end - 1;
205 res->flags = IORESOURCE_MEM | IORESOURCE_BUSY;
206
207 if (request_resource(&iomem_resource, res)) {
208 pr_err("unable to request memory_resource 0x%lx 0x%lx\n",
209 start_pfn, end_pfn);
210 return;
211 }
212
213
214
215
216
217
218 request_resource(res, &code_resource);
219 request_resource(res, &data_resource);
220 request_resource(res, &bss_resource);
221
222
223
224
225
226
227 pmb_bolt_mapping((unsigned long)__va(start), start, end - start,
228 PAGE_KERNEL);
229
230 add_active_range(nid, start_pfn, end_pfn);
231}
232
233void __init __weak plat_early_device_setup(void)
234{
235}
236
237void __init setup_arch(char **cmdline_p)
238{
239 enable_mmu();
240
241 ROOT_DEV = old_decode_dev(ORIG_ROOT_DEV);
242
243 printk(KERN_NOTICE "Boot params:\n"
244 "... MOUNT_ROOT_RDONLY - %08lx\n"
245 "... RAMDISK_FLAGS - %08lx\n"
246 "... ORIG_ROOT_DEV - %08lx\n"
247 "... LOADER_TYPE - %08lx\n"
248 "... INITRD_START - %08lx\n"
249 "... INITRD_SIZE - %08lx\n",
250 MOUNT_ROOT_RDONLY, RAMDISK_FLAGS,
251 ORIG_ROOT_DEV, LOADER_TYPE,
252 INITRD_START, INITRD_SIZE);
253
254#ifdef CONFIG_BLK_DEV_RAM
255 rd_image_start = RAMDISK_FLAGS & RAMDISK_IMAGE_START_MASK;
256 rd_prompt = ((RAMDISK_FLAGS & RAMDISK_PROMPT_FLAG) != 0);
257 rd_doload = ((RAMDISK_FLAGS & RAMDISK_LOAD_FLAG) != 0);
258#endif
259
260 if (!MOUNT_ROOT_RDONLY)
261 root_mountflags &= ~MS_RDONLY;
262 init_mm.start_code = (unsigned long) _text;
263 init_mm.end_code = (unsigned long) _etext;
264 init_mm.end_data = (unsigned long) _edata;
265 init_mm.brk = (unsigned long) _end;
266
267 code_resource.start = virt_to_phys(_text);
268 code_resource.end = virt_to_phys(_etext)-1;
269 data_resource.start = virt_to_phys(_etext);
270 data_resource.end = virt_to_phys(_edata)-1;
271 bss_resource.start = virt_to_phys(__bss_start);
272 bss_resource.end = virt_to_phys(_ebss)-1;
273
274#ifdef CONFIG_CMDLINE_OVERWRITE
275 strlcpy(command_line, CONFIG_CMDLINE, sizeof(command_line));
276#else
277 strlcpy(command_line, COMMAND_LINE, sizeof(command_line));
278#ifdef CONFIG_CMDLINE_EXTEND
279 strlcat(command_line, " ", sizeof(command_line));
280 strlcat(command_line, CONFIG_CMDLINE, sizeof(command_line));
281#endif
282#endif
283
284
285 memcpy(boot_command_line, command_line, COMMAND_LINE_SIZE);
286 *cmdline_p = command_line;
287
288 parse_early_param();
289
290 plat_early_device_setup();
291
292 sh_mv_setup();
293
294
295 early_platform_driver_probe("earlyprintk", 1, 1);
296
297 paging_init();
298
299#ifdef CONFIG_DUMMY_CONSOLE
300 conswitchp = &dummy_con;
301#endif
302
303
304 if (likely(sh_mv.mv_setup))
305 sh_mv.mv_setup(cmdline_p);
306
307 plat_smp_setup();
308}
309
310
311int generic_mode_pins(void)
312{
313 pr_warning("generic_mode_pins(): missing mode pin configuration\n");
314 return 0;
315}
316
317int test_mode_pin(int pin)
318{
319 return sh_mv.mv_mode_pins() & pin;
320}
321
