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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 <linux/of.h>
33#include <linux/of_fdt.h>
34#include <asm/uaccess.h>
35#include <asm/io.h>
36#include <asm/page.h>
37#include <asm/elf.h>
38#include <asm/sections.h>
39#include <asm/irq.h>
40#include <asm/setup.h>
41#include <asm/clock.h>
42#include <asm/smp.h>
43#include <asm/mmu_context.h>
44#include <asm/mmzone.h>
45#include <asm/sparsemem.h>
46
47
48
49
50
51
52struct sh_cpuinfo cpu_data[NR_CPUS] __read_mostly = {
53 [0] = {
54 .type = CPU_SH_NONE,
55 .family = CPU_FAMILY_UNKNOWN,
56 .loops_per_jiffy = 10000000,
57 .phys_bits = MAX_PHYSMEM_BITS,
58 },
59};
60EXPORT_SYMBOL(cpu_data);
61
62
63
64
65
66struct sh_machine_vector sh_mv = { .mv_name = "generic", };
67EXPORT_SYMBOL(sh_mv);
68
69#ifdef CONFIG_VT
70struct screen_info screen_info;
71#endif
72
73extern int root_mountflags;
74
75#define RAMDISK_IMAGE_START_MASK 0x07FF
76#define RAMDISK_PROMPT_FLAG 0x8000
77#define RAMDISK_LOAD_FLAG 0x4000
78
79static char __initdata command_line[COMMAND_LINE_SIZE] = { 0, };
80
81static struct resource code_resource = {
82 .name = "Kernel code",
83 .flags = IORESOURCE_BUSY | IORESOURCE_SYSTEM_RAM,
84};
85
86static struct resource data_resource = {
87 .name = "Kernel data",
88 .flags = IORESOURCE_BUSY | IORESOURCE_SYSTEM_RAM,
89};
90
91static struct resource bss_resource = {
92 .name = "Kernel bss",
93 .flags = IORESOURCE_BUSY | IORESOURCE_SYSTEM_RAM,
94};
95
96unsigned long memory_start;
97EXPORT_SYMBOL(memory_start);
98unsigned long memory_end = 0;
99EXPORT_SYMBOL(memory_end);
100unsigned long memory_limit = 0;
101
102static struct resource mem_resources[MAX_NUMNODES];
103
104int l1i_cache_shape, l1d_cache_shape, l2_cache_shape;
105
106static int __init early_parse_mem(char *p)
107{
108 if (!p)
109 return 1;
110
111 memory_limit = PAGE_ALIGN(memparse(p, &p));
112
113 pr_notice("Memory limited to %ldMB\n", memory_limit >> 20);
114
115 return 0;
116}
117early_param("mem", early_parse_mem);
118
119void __init check_for_initrd(void)
120{
121#ifdef CONFIG_BLK_DEV_INITRD
122 unsigned long start, end;
123
124
125
126
127
128 if (!LOADER_TYPE || !INITRD_START || !INITRD_SIZE)
129 goto disable;
130
131 start = INITRD_START + __MEMORY_START;
132 end = start + INITRD_SIZE;
133
134 if (unlikely(end <= start))
135 goto disable;
136 if (unlikely(start & ~PAGE_MASK)) {
137 pr_err("initrd must be page aligned\n");
138 goto disable;
139 }
140
141 if (unlikely(start < __MEMORY_START)) {
142 pr_err("initrd start (%08lx) < __MEMORY_START(%x)\n",
143 start, __MEMORY_START);
144 goto disable;
145 }
146
147 if (unlikely(end > memblock_end_of_DRAM())) {
148 pr_err("initrd extends beyond end of memory "
149 "(0x%08lx > 0x%08lx)\ndisabling initrd\n",
150 end, (unsigned long)memblock_end_of_DRAM());
151 goto disable;
152 }
153
154
155
156
157
158
159 ROOT_DEV = Root_RAM0;
160
161
162
163
164 initrd_start = (unsigned long)__va(start);
165 initrd_end = initrd_start + INITRD_SIZE;
166
167 memblock_reserve(__pa(initrd_start), INITRD_SIZE);
168
169 return;
170
171disable:
172 pr_info("initrd disabled\n");
173 initrd_start = initrd_end = 0;
174#endif
175}
176
177#ifndef CONFIG_GENERIC_CALIBRATE_DELAY
178void calibrate_delay(void)
179{
180 struct clk *clk = clk_get(NULL, "cpu_clk");
181
182 if (IS_ERR(clk))
183 panic("Need a sane CPU clock definition!");
184
185 loops_per_jiffy = (clk_get_rate(clk) >> 1) / HZ;
186
187 printk(KERN_INFO "Calibrating delay loop (skipped)... "
188 "%lu.%02lu BogoMIPS PRESET (lpj=%lu)\n",
189 loops_per_jiffy/(500000/HZ),
190 (loops_per_jiffy/(5000/HZ)) % 100,
191 loops_per_jiffy);
192}
193#endif
194
195void __init __add_active_range(unsigned int nid, unsigned long start_pfn,
196 unsigned long end_pfn)
197{
198 struct resource *res = &mem_resources[nid];
199 unsigned long start, end;
200
201 WARN_ON(res->name);
202
203 start = start_pfn << PAGE_SHIFT;
204 end = end_pfn << PAGE_SHIFT;
205
206 res->name = "System RAM";
207 res->start = start;
208 res->end = end - 1;
209 res->flags = IORESOURCE_SYSTEM_RAM | IORESOURCE_BUSY;
210
211 if (request_resource(&iomem_resource, res)) {
212 pr_err("unable to request memory_resource 0x%lx 0x%lx\n",
213 start_pfn, end_pfn);
214 return;
215 }
216
217
218
219
220
221
222 request_resource(res, &code_resource);
223 request_resource(res, &data_resource);
224 request_resource(res, &bss_resource);
225#ifdef CONFIG_KEXEC
226 request_resource(res, &crashk_res);
227#endif
228
229
230
231
232
233
234 pmb_bolt_mapping((unsigned long)__va(start), start, end - start,
235 PAGE_KERNEL);
236
237 memblock_set_node(PFN_PHYS(start_pfn), PFN_PHYS(end_pfn - start_pfn),
238 &memblock.memory, nid);
239}
240
241void __init __weak plat_early_device_setup(void)
242{
243}
244
245#ifdef CONFIG_OF
246void __ref sh_fdt_init(phys_addr_t dt_phys)
247{
248 static int done = 0;
249 void *dt_virt;
250
251
252 if (done) return;
253
254 dt_virt = phys_to_virt(dt_phys);
255
256 if (!dt_virt || !early_init_dt_scan(dt_virt)) {
257 pr_crit("Error: invalid device tree blob"
258 " at physical address %p\n", (void *)dt_phys);
259
260 while (true)
261 cpu_relax();
262 }
263
264 done = 1;
265}
266#endif
267
268void __init setup_arch(char **cmdline_p)
269{
270 enable_mmu();
271
272 ROOT_DEV = old_decode_dev(ORIG_ROOT_DEV);
273
274 printk(KERN_NOTICE "Boot params:\n"
275 "... MOUNT_ROOT_RDONLY - %08lx\n"
276 "... RAMDISK_FLAGS - %08lx\n"
277 "... ORIG_ROOT_DEV - %08lx\n"
278 "... LOADER_TYPE - %08lx\n"
279 "... INITRD_START - %08lx\n"
280 "... INITRD_SIZE - %08lx\n",
281 MOUNT_ROOT_RDONLY, RAMDISK_FLAGS,
282 ORIG_ROOT_DEV, LOADER_TYPE,
283 INITRD_START, INITRD_SIZE);
284
285#ifdef CONFIG_BLK_DEV_RAM
286 rd_image_start = RAMDISK_FLAGS & RAMDISK_IMAGE_START_MASK;
287 rd_prompt = ((RAMDISK_FLAGS & RAMDISK_PROMPT_FLAG) != 0);
288 rd_doload = ((RAMDISK_FLAGS & RAMDISK_LOAD_FLAG) != 0);
289#endif
290
291 if (!MOUNT_ROOT_RDONLY)
292 root_mountflags &= ~MS_RDONLY;
293 init_mm.start_code = (unsigned long) _text;
294 init_mm.end_code = (unsigned long) _etext;
295 init_mm.end_data = (unsigned long) _edata;
296 init_mm.brk = (unsigned long) _end;
297
298 code_resource.start = virt_to_phys(_text);
299 code_resource.end = virt_to_phys(_etext)-1;
300 data_resource.start = virt_to_phys(_etext);
301 data_resource.end = virt_to_phys(_edata)-1;
302 bss_resource.start = virt_to_phys(__bss_start);
303 bss_resource.end = virt_to_phys(__bss_stop)-1;
304
305#ifdef CONFIG_CMDLINE_OVERWRITE
306 strlcpy(command_line, CONFIG_CMDLINE, sizeof(command_line));
307#else
308 strlcpy(command_line, COMMAND_LINE, sizeof(command_line));
309#ifdef CONFIG_CMDLINE_EXTEND
310 strlcat(command_line, " ", sizeof(command_line));
311 strlcat(command_line, CONFIG_CMDLINE, sizeof(command_line));
312#endif
313#endif
314
315
316 memcpy(boot_command_line, command_line, COMMAND_LINE_SIZE);
317 *cmdline_p = command_line;
318
319 parse_early_param();
320
321 plat_early_device_setup();
322
323 sh_mv_setup();
324
325
326 early_platform_driver_probe("earlyprintk", 1, 1);
327
328 paging_init();
329
330#ifdef CONFIG_DUMMY_CONSOLE
331 conswitchp = &dummy_con;
332#endif
333
334
335 if (likely(sh_mv.mv_setup))
336 sh_mv.mv_setup(cmdline_p);
337
338 plat_smp_setup();
339}
340
341
342int generic_mode_pins(void)
343{
344 pr_warning("generic_mode_pins(): missing mode pin configuration\n");
345 return 0;
346}
347
348int test_mode_pin(int pin)
349{
350 return sh_mv.mv_mode_pins() & pin;
351}
352
