1 /* 1 /*
2 * Copyright (C) 2007-2009 Michal Simek <monst !! 2 * Common prep/pmac/chrp boot and setup code.
3 * Copyright (C) 2007-2009 PetaLogix <<
4 * Copyright (C) 2006 Atmark Techno, Inc. <<
5 * <<
6 * This file is subject to the terms and condi <<
7 * License. See the file "COPYING" in the main <<
8 * for more details. <<
9 */ 3 */
10 4
11 #include <linux/init.h> !! 5 #include <linux/config.h>
12 #include <linux/of_clk.h> !! 6 #include <linux/module.h>
13 #include <linux/clocksource.h> <<
14 #include <linux/string.h> 7 #include <linux/string.h>
>> 8 #include <linux/sched.h>
>> 9 #include <linux/init.h>
>> 10 #include <linux/reboot.h>
>> 11 #include <linux/delay.h>
>> 12 #include <linux/initrd.h>
>> 13 #include <linux/ide.h>
>> 14 #include <linux/tty.h>
>> 15 #include <linux/bootmem.h>
15 #include <linux/seq_file.h> 16 #include <linux/seq_file.h>
>> 17 #include <linux/root_dev.h>
16 #include <linux/cpu.h> 18 #include <linux/cpu.h>
17 #include <linux/initrd.h> <<
18 #include <linux/console.h> <<
19 #include <linux/debugfs.h> <<
20 #include <linux/of_fdt.h> <<
21 #include <linux/pgtable.h> <<
22 19
>> 20 #include <asm/residual.h>
>> 21 #include <asm/io.h>
>> 22 #include <asm/prom.h>
>> 23 #include <asm/processor.h>
>> 24 #include <asm/pgtable.h>
>> 25 #include <asm/bootinfo.h>
23 #include <asm/setup.h> 26 #include <asm/setup.h>
>> 27 #include <asm/amigappc.h>
>> 28 #include <asm/smp.h>
>> 29 #include <asm/elf.h>
>> 30 #include <asm/cputable.h>
>> 31 #include <asm/bootx.h>
>> 32 #include <asm/btext.h>
>> 33 #include <asm/machdep.h>
>> 34 #include <asm/uaccess.h>
>> 35 #include <asm/system.h>
>> 36 #include <asm/pmac_feature.h>
24 #include <asm/sections.h> 37 #include <asm/sections.h>
25 #include <asm/page.h> !! 38 #include <asm/xmon.h>
26 #include <linux/io.h> !! 39
27 #include <linux/bug.h> !! 40 #if defined CONFIG_KGDB
28 #include <linux/param.h> !! 41 #include <asm/kgdb.h>
29 #include <linux/pci.h> !! 42 #endif
30 #include <linux/cache.h> !! 43
31 #include <linux/of.h> !! 44 extern void platform_init(unsigned long r3, unsigned long r4,
32 #include <linux/dma-mapping.h> !! 45 unsigned long r5, unsigned long r6, unsigned long r7);
33 #include <asm/cacheflush.h> !! 46 extern void bootx_init(unsigned long r4, unsigned long phys);
34 #include <asm/entry.h> !! 47 extern void identify_cpu(unsigned long offset, unsigned long cpu);
35 #include <asm/cpuinfo.h> !! 48 extern void do_cpu_ftr_fixups(unsigned long offset);
36 !! 49 extern void reloc_got2(unsigned long offset);
37 !! 50
38 DEFINE_PER_CPU(unsigned int, KSP); /* Sav !! 51
39 DEFINE_PER_CPU(unsigned int, KM); /* Ker !! 52 #ifdef CONFIG_KGDB
40 DEFINE_PER_CPU(unsigned int, ENTRY_SP); /* Sav !! 53 extern void kgdb_map_scc(void);
41 DEFINE_PER_CPU(unsigned int, R11_SAVE); /* Tem !! 54 #endif
42 DEFINE_PER_CPU(unsigned int, CURRENT_SAVE); !! 55
>> 56 extern void ppc6xx_idle(void);
>> 57 extern void power4_idle(void);
>> 58
>> 59 extern boot_infos_t *boot_infos;
>> 60 char saved_command_line[256];
>> 61 unsigned char aux_device_present;
>> 62 struct ide_machdep_calls ppc_ide_md;
>> 63 char *sysmap;
>> 64 unsigned long sysmap_size;
>> 65
>> 66 /* Used with the BI_MEMSIZE bootinfo parameter to store the memory
>> 67 size value reported by the boot loader. */
>> 68 unsigned long boot_mem_size;
>> 69
>> 70 unsigned long ISA_DMA_THRESHOLD;
>> 71 unsigned long DMA_MODE_READ, DMA_MODE_WRITE;
>> 72
>> 73 #ifdef CONFIG_PPC_MULTIPLATFORM
>> 74 int _machine = 0;
>> 75
>> 76 extern void prep_init(unsigned long r3, unsigned long r4,
>> 77 unsigned long r5, unsigned long r6, unsigned long r7);
>> 78 extern void pmac_init(unsigned long r3, unsigned long r4,
>> 79 unsigned long r5, unsigned long r6, unsigned long r7);
>> 80 extern void chrp_init(unsigned long r3, unsigned long r4,
>> 81 unsigned long r5, unsigned long r6, unsigned long r7);
>> 82 #endif /* CONFIG_PPC_MULTIPLATFORM */
>> 83
>> 84 #ifdef CONFIG_MAGIC_SYSRQ
>> 85 unsigned long SYSRQ_KEY = 0x54;
>> 86 #endif /* CONFIG_MAGIC_SYSRQ */
>> 87
>> 88 #ifdef CONFIG_VGA_CONSOLE
>> 89 unsigned long vgacon_remap_base;
>> 90 #endif
>> 91
>> 92 struct machdep_calls ppc_md;
43 93
44 /* 94 /*
45 * Placed cmd_line to .data section because ca !! 95 * These are used in binfmt_elf.c to put aux entries on the stack
46 * ASM code. Default position is BSS section w !! 96 * for each elf executable being started.
47 * in machine_early_init(). <<
48 */ 97 */
49 char cmd_line[COMMAND_LINE_SIZE] __section(".d !! 98 int dcache_bsize;
>> 99 int icache_bsize;
>> 100 int ucache_bsize;
>> 101
>> 102 #if defined(CONFIG_VGA_CONSOLE) || defined(CONFIG_FB_VGA16) || \
>> 103 defined(CONFIG_FB_VGA16_MODULE) || defined(CONFIG_FB_VESA)
>> 104 struct screen_info screen_info = {
>> 105 0, 25, /* orig-x, orig-y */
>> 106 0, /* unused */
>> 107 0, /* orig-video-page */
>> 108 0, /* orig-video-mode */
>> 109 80, /* orig-video-cols */
>> 110 0,0,0, /* ega_ax, ega_bx, ega_cx */
>> 111 25, /* orig-video-lines */
>> 112 1, /* orig-video-isVGA */
>> 113 16 /* orig-video-points */
>> 114 };
>> 115 #endif /* CONFIG_VGA_CONSOLE || CONFIG_FB_VGA16 || CONFIG_FB_VESA */
50 116
51 void __init setup_arch(char **cmdline_p) !! 117 void machine_restart(char *cmd)
52 { 118 {
53 *cmdline_p = boot_command_line; !! 119 ppc_md.restart(cmd);
>> 120 }
54 121
55 setup_memory(); !! 122 EXPORT_SYMBOL(machine_restart);
>> 123
>> 124 void machine_power_off(void)
>> 125 {
>> 126 ppc_md.power_off();
>> 127 }
56 128
57 console_verbose(); !! 129 EXPORT_SYMBOL(machine_power_off);
58 130
59 unflatten_device_tree(); !! 131 void machine_halt(void)
>> 132 {
>> 133 ppc_md.halt();
>> 134 }
60 135
61 setup_cpuinfo(); !! 136 EXPORT_SYMBOL(machine_halt);
62 137
63 microblaze_cache_init(); !! 138 void (*pm_power_off)(void) = machine_power_off;
64 139
65 xilinx_pci_init(); !! 140 #ifdef CONFIG_TAU
66 } !! 141 extern u32 cpu_temp(unsigned long cpu);
>> 142 extern u32 cpu_temp_both(unsigned long cpu);
>> 143 #endif /* CONFIG_TAU */
67 144
68 #ifdef CONFIG_MTD_UCLINUX !! 145 int show_cpuinfo(struct seq_file *m, void *v)
69 /* Handle both romfs and cramfs types, without <<
70 code (ie no point checking for CRAMFS if it's <<
71 inline unsigned get_romfs_len(unsigned *addr) <<
72 { 146 {
73 #ifdef CONFIG_ROMFS_FS !! 147 int i = (int) v - 1;
74 if (memcmp(&addr[0], "-rom1fs-", 8) == !! 148 int err = 0;
75 return be32_to_cpu(addr[2]); !! 149 unsigned int pvr;
>> 150 unsigned short maj, min;
>> 151 unsigned long lpj;
>> 152
>> 153 if (i >= NR_CPUS) {
>> 154 /* Show summary information */
>> 155 #ifdef CONFIG_SMP
>> 156 unsigned long bogosum = 0;
>> 157 for (i = 0; i < NR_CPUS; ++i)
>> 158 if (cpu_online(i))
>> 159 bogosum += cpu_data[i].loops_per_jiffy;
>> 160 seq_printf(m, "total bogomips\t: %lu.%02lu\n",
>> 161 bogosum/(500000/HZ), bogosum/(5000/HZ) % 100);
>> 162 #endif /* CONFIG_SMP */
>> 163
>> 164 if (ppc_md.show_cpuinfo != NULL)
>> 165 err = ppc_md.show_cpuinfo(m);
>> 166 return err;
>> 167 }
>> 168
>> 169 #ifdef CONFIG_SMP
>> 170 if (!cpu_online(i))
>> 171 return 0;
>> 172 pvr = cpu_data[i].pvr;
>> 173 lpj = cpu_data[i].loops_per_jiffy;
>> 174 #else
>> 175 pvr = mfspr(PVR);
>> 176 lpj = loops_per_jiffy;
76 #endif 177 #endif
77 178
78 #ifdef CONFIG_CRAMFS !! 179 seq_printf(m, "processor\t: %d\n", i);
79 if (addr[0] == le32_to_cpu(0x28cd3d45) !! 180 seq_printf(m, "cpu\t\t: ");
80 return le32_to_cpu(addr[1]); !! 181
>> 182 if (cur_cpu_spec[i]->pvr_mask)
>> 183 seq_printf(m, "%s", cur_cpu_spec[i]->cpu_name);
>> 184 else
>> 185 seq_printf(m, "unknown (%08x)", pvr);
>> 186 #ifdef CONFIG_ALTIVEC
>> 187 if (cur_cpu_spec[i]->cpu_features & CPU_FTR_ALTIVEC)
>> 188 seq_printf(m, ", altivec supported");
81 #endif 189 #endif
>> 190 seq_printf(m, "\n");
>> 191
>> 192 #ifdef CONFIG_TAU
>> 193 if (cur_cpu_spec[i]->cpu_features & CPU_FTR_TAU) {
>> 194 #ifdef CONFIG_TAU_AVERAGE
>> 195 /* more straightforward, but potentially misleading */
>> 196 seq_printf(m, "temperature \t: %u C (uncalibrated)\n",
>> 197 cpu_temp(i));
>> 198 #else
>> 199 /* show the actual temp sensor range */
>> 200 u32 temp;
>> 201 temp = cpu_temp_both(i);
>> 202 seq_printf(m, "temperature \t: %u-%u C (uncalibrated)\n",
>> 203 temp & 0xff, temp >> 16);
>> 204 #endif
>> 205 }
>> 206 #endif /* CONFIG_TAU */
>> 207
>> 208 if (ppc_md.show_percpuinfo != NULL) {
>> 209 err = ppc_md.show_percpuinfo(m, i);
>> 210 if (err)
>> 211 return err;
>> 212 }
>> 213
>> 214 switch (PVR_VER(pvr)) {
>> 215 case 0x0020: /* 403 family */
>> 216 maj = PVR_MAJ(pvr) + 1;
>> 217 min = PVR_MIN(pvr);
>> 218 break;
>> 219 case 0x1008: /* 740P/750P ?? */
>> 220 maj = ((pvr >> 8) & 0xFF) - 1;
>> 221 min = pvr & 0xFF;
>> 222 break;
>> 223 default:
>> 224 maj = (pvr >> 8) & 0xFF;
>> 225 min = pvr & 0xFF;
>> 226 break;
>> 227 }
>> 228
>> 229 seq_printf(m, "revision\t: %hd.%hd (pvr %04x %04x)\n",
>> 230 maj, min, PVR_VER(pvr), PVR_REV(pvr));
>> 231
>> 232 seq_printf(m, "bogomips\t: %lu.%02lu\n",
>> 233 lpj / (500000/HZ), (lpj / (5000/HZ)) % 100);
>> 234
>> 235 #ifdef CONFIG_SMP
>> 236 seq_printf(m, "\n");
>> 237 #endif
>> 238
82 return 0; 239 return 0;
83 } 240 }
84 #endif /* CONFIG_MTD_UCLINUX_EBSS */ <<
85 241
86 unsigned long kernel_tlb; !! 242 static void *c_start(struct seq_file *m, loff_t *pos)
>> 243 {
>> 244 int i = *pos;
>> 245
>> 246 return i <= NR_CPUS? (void *) (i + 1): NULL;
>> 247 }
>> 248
>> 249 static void *c_next(struct seq_file *m, void *v, loff_t *pos)
>> 250 {
>> 251 ++*pos;
>> 252 return c_start(m, pos);
>> 253 }
87 254
88 void __init machine_early_init(const char *cmd !! 255 static void c_stop(struct seq_file *m, void *v)
89 unsigned int fdt, unsigned int <<
90 unsigned int tlb1) <<
91 { 256 {
92 unsigned long *src, *dst; !! 257 }
93 unsigned int offset = 0; !! 258
>> 259 struct seq_operations cpuinfo_op = {
>> 260 .start =c_start,
>> 261 .next = c_next,
>> 262 .stop = c_stop,
>> 263 .show = show_cpuinfo,
>> 264 };
94 265
95 /* If CONFIG_MTD_UCLINUX is defined, a !! 266 /*
96 * end of kernel. There are two positi !! 267 * We're called here very early in the boot. We determine the machine
97 * The first is __init_end and the sec !! 268 * type and call the appropriate low-level setup functions.
>> 269 * -- Cort <cort@fsmlabs.com>
>> 270 *
>> 271 * Note that the kernel may be running at an address which is different
>> 272 * from the address that it was linked at, so we must use RELOC/PTRRELOC
>> 273 * to access static data (including strings). -- paulus
>> 274 */
>> 275 __init
>> 276 unsigned long
>> 277 early_init(int r3, int r4, int r5)
>> 278 {
>> 279 unsigned long phys;
>> 280 unsigned long offset = reloc_offset();
>> 281
>> 282 /* Default */
>> 283 phys = offset + KERNELBASE;
>> 284
>> 285 /* First zero the BSS -- use memset, some arches don't have
>> 286 * caches on yet */
>> 287 memset_io(PTRRELOC(&__bss_start), 0, _end - __bss_start);
>> 288
>> 289 /*
>> 290 * Identify the CPU type and fix up code sections
>> 291 * that depend on which cpu we have.
98 */ 292 */
99 #ifdef CONFIG_MTD_UCLINUX !! 293 identify_cpu(offset, 0);
100 int romfs_size; !! 294 do_cpu_ftr_fixups(offset);
101 unsigned int romfs_base; <<
102 char *old_klimit = klimit; <<
103 295
104 romfs_base = (ram ? ram : (unsigned in !! 296 #if defined(CONFIG_PPC_MULTIPLATFORM)
105 romfs_size = PAGE_ALIGN(get_romfs_len( !! 297 reloc_got2(offset);
106 if (!romfs_size) { <<
107 romfs_base = (unsigned int)&__ <<
108 romfs_size = PAGE_ALIGN(get_ro <<
109 } <<
110 298
111 /* Move ROMFS out of BSS before cleari !! 299 /* If we came here from BootX, clear the screen,
112 if (romfs_size > 0) { !! 300 * set up some pointers and return. */
113 memmove(&__bss_stop, (int *)ro !! 301 if ((r3 == 0x426f6f58) && (r5 == 0))
114 klimit += romfs_size; !! 302 bootx_init(r4, phys);
115 } !! 303
>> 304 /*
>> 305 * don't do anything on prep
>> 306 * for now, don't use bootinfo because it breaks yaboot 0.5
>> 307 * and assume that if we didn't find a magic number, we have OF
>> 308 */
>> 309 else if (*(unsigned long *)(0) != 0xdeadc0de)
>> 310 phys = prom_init(r3, r4, (prom_entry)r5);
>> 311
>> 312 reloc_got2(-offset);
116 #endif 313 #endif
117 314
118 /* clearing bss section */ !! 315 return phys;
119 memset(__bss_start, 0, __bss_stop-__bs !! 316 }
120 memset(_ssbss, 0, _esbss-_ssbss); !! 317
>> 318 #ifdef CONFIG_PPC_OF
>> 319 /*
>> 320 * Assume here that all clock rates are the same in a
>> 321 * smp system. -- Cort
>> 322 */
>> 323 int __openfirmware
>> 324 of_show_percpuinfo(struct seq_file *m, int i)
>> 325 {
>> 326 struct device_node *cpu_node;
>> 327 int *fp, s;
>> 328
>> 329 cpu_node = find_type_devices("cpu");
>> 330 if (!cpu_node)
>> 331 return 0;
>> 332 for (s = 0; s < i && cpu_node->next; s++)
>> 333 cpu_node = cpu_node->next;
>> 334 fp = (int *) get_property(cpu_node, "clock-frequency", NULL);
>> 335 if (fp)
>> 336 seq_printf(m, "clock\t\t: %dMHz\n", *fp / 1000000);
>> 337 return 0;
>> 338 }
121 339
122 /* initialize device tree for usage in early_p !! 340 void __init
123 early_init_devtree(_fdt_start); !! 341 intuit_machine_type(void)
>> 342 {
>> 343 char *model;
>> 344 struct device_node *root;
>> 345
>> 346 /* ask the OF info if we're a chrp or pmac */
>> 347 root = find_path_device("/");
>> 348 if (root != 0) {
>> 349 /* assume pmac unless proven to be chrp -- Cort */
>> 350 _machine = _MACH_Pmac;
>> 351 model = get_property(root, "device_type", NULL);
>> 352 if (model && !strncmp("chrp", model, 4))
>> 353 _machine = _MACH_chrp;
>> 354 else {
>> 355 model = get_property(root, "model", NULL);
>> 356 if (model && !strncmp(model, "IBM", 3))
>> 357 _machine = _MACH_chrp;
>> 358 }
>> 359 }
>> 360 }
>> 361 #endif
124 362
125 /* setup kernel_tlb after BSS cleaning !! 363 #ifdef CONFIG_PPC_MULTIPLATFORM
126 * Maybe worth to move to asm code */ !! 364 /*
127 kernel_tlb = tlb0 + tlb1; !! 365 * The PPC_MULTIPLATFORM version of platform_init...
128 /* printk("TLB1 0x%08x, TLB0 0x%08x, t !! 366 */
129 !! 367 void __init
>> 368 platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
>> 369 unsigned long r6, unsigned long r7)
>> 370 {
>> 371 #ifdef CONFIG_BOOTX_TEXT
>> 372 if (boot_text_mapped) {
>> 373 btext_clearscreen();
>> 374 btext_welcome();
>> 375 }
>> 376 #endif
130 377
131 pr_info("Ramdisk addr 0x%08x, ", ram); !! 378 parse_bootinfo(find_bootinfo());
132 if (fdt) <<
133 pr_info("FDT at 0x%08x\n", fdt <<
134 else <<
135 pr_info("Compiled-in FDT at %p <<
136 379
137 #ifdef CONFIG_MTD_UCLINUX !! 380 /* if we didn't get any bootinfo telling us what we are... */
138 pr_info("Found romfs @ 0x%08x (0x%08x) !! 381 if (_machine == 0) {
139 romfs_base, romfs_size !! 382 /* prep boot loader tells us if we're prep or not */
140 pr_info("#### klimit %p ####\n", old_k !! 383 if ( *(unsigned long *)(KERNELBASE) == (0xdeadc0de) )
141 BUG_ON(romfs_size < 0); /* What else c !! 384 _machine = _MACH_prep;
>> 385 }
142 386
143 pr_info("Moved 0x%08x bytes from 0x%08 !! 387 /* not much more to do here, if prep */
144 romfs_size, romfs_base !! 388 if (_machine == _MACH_prep) {
>> 389 prep_init(r3, r4, r5, r6, r7);
>> 390 return;
>> 391 }
145 392
146 pr_info("New klimit: 0x%08x\n", (unsig !! 393 /* prom_init has already been called from __start */
>> 394 if (boot_infos)
>> 395 relocate_nodes();
>> 396
>> 397 /* If we aren't PReP, we can find out if we're Pmac
>> 398 * or CHRP with this. */
>> 399 if (_machine == 0)
>> 400 intuit_machine_type();
>> 401
>> 402 /* finish_device_tree may need _machine defined. */
>> 403 finish_device_tree();
>> 404
>> 405 /*
>> 406 * If we were booted via quik, r3 points to the physical
>> 407 * address of the command-line parameters.
>> 408 * If we were booted from an xcoff image (i.e. netbooted or
>> 409 * booted from floppy), we get the command line from the
>> 410 * bootargs property of the /chosen node.
>> 411 * If an initial ramdisk is present, r3 and r4
>> 412 * are used for initrd_start and initrd_size,
>> 413 * otherwise they contain 0xdeadbeef.
>> 414 */
>> 415 cmd_line[0] = 0;
>> 416 if (r3 >= 0x4000 && r3 < 0x800000 && r4 == 0) {
>> 417 strlcpy(cmd_line, (char *)r3 + KERNELBASE,
>> 418 sizeof(cmd_line));
>> 419 } else if (boot_infos != 0) {
>> 420 /* booted by BootX - check for ramdisk */
>> 421 if (boot_infos->kernelParamsOffset != 0)
>> 422 strlcpy(cmd_line, (char *) boot_infos
>> 423 + boot_infos->kernelParamsOffset,
>> 424 sizeof(cmd_line));
>> 425 #ifdef CONFIG_BLK_DEV_INITRD
>> 426 if (boot_infos->ramDisk) {
>> 427 initrd_start = (unsigned long) boot_infos
>> 428 + boot_infos->ramDisk;
>> 429 initrd_end = initrd_start + boot_infos->ramDiskSize;
>> 430 initrd_below_start_ok = 1;
>> 431 }
>> 432 #endif
>> 433 } else {
>> 434 struct device_node *chosen;
>> 435 char *p;
>> 436
>> 437 #ifdef CONFIG_BLK_DEV_INITRD
>> 438 if (r3 && r4 && r4 != 0xdeadbeef) {
>> 439 if (r3 < KERNELBASE)
>> 440 r3 += KERNELBASE;
>> 441 initrd_start = r3;
>> 442 initrd_end = r3 + r4;
>> 443 ROOT_DEV = Root_RAM0;
>> 444 initrd_below_start_ok = 1;
>> 445 }
147 #endif 446 #endif
>> 447 chosen = find_devices("chosen");
>> 448 if (chosen != NULL) {
>> 449 p = get_property(chosen, "bootargs", NULL);
>> 450 if (p && *p) {
>> 451 strlcpy(cmd_line, p, sizeof(cmd_line));
>> 452 }
>> 453 }
>> 454 }
>> 455 #ifdef CONFIG_ADB
>> 456 if (strstr(cmd_line, "adb_sync")) {
>> 457 extern int __adb_probe_sync;
>> 458 __adb_probe_sync = 1;
>> 459 }
>> 460 #endif /* CONFIG_ADB */
148 461
149 #if CONFIG_XILINX_MICROBLAZE0_USE_MSR_INSTR !! 462 switch (_machine) {
150 if (msr) { !! 463 case _MACH_Pmac:
151 pr_info("!!!Your kernel has se !! 464 pmac_init(r3, r4, r5, r6, r7);
152 pr_cont("CPU don't have it %x\ !! 465 break;
>> 466 case _MACH_chrp:
>> 467 chrp_init(r3, r4, r5, r6, r7);
>> 468 break;
153 } 469 }
154 #else !! 470 }
155 if (!msr) { !! 471 #endif /* CONFIG_PPC_MULTIPLATFORM */
156 pr_info("!!!Your kernel not se !! 472
157 pr_cont("CPU have it %x\n", ms !! 473 struct bi_record *find_bootinfo(void)
>> 474 {
>> 475 struct bi_record *rec;
>> 476
>> 477 rec = (struct bi_record *)_ALIGN((ulong)__bss_start+(1<<20)-1,(1<<20));
>> 478 if ( rec->tag != BI_FIRST ) {
>> 479 /*
>> 480 * This 0x10000 offset is a terrible hack but it will go away when
>> 481 * we have the bootloader handle all the relocation and
>> 482 * prom calls -- Cort
>> 483 */
>> 484 rec = (struct bi_record *)_ALIGN((ulong)__bss_start+0x10000+(1<<20)-1,(1<<20));
>> 485 if ( rec->tag != BI_FIRST )
>> 486 return NULL;
158 } 487 }
>> 488 return rec;
>> 489 }
>> 490
>> 491 void parse_bootinfo(struct bi_record *rec)
>> 492 {
>> 493 if (rec == NULL || rec->tag != BI_FIRST)
>> 494 return;
>> 495 while (rec->tag != BI_LAST) {
>> 496 ulong *data = rec->data;
>> 497 switch (rec->tag) {
>> 498 case BI_CMD_LINE:
>> 499 memcpy(cmd_line, (void *)data, rec->size);
>> 500 break;
>> 501 case BI_SYSMAP:
>> 502 sysmap = (char *)((data[0] >= (KERNELBASE)) ? data[0] :
>> 503 (data[0]+KERNELBASE));
>> 504 sysmap_size = data[1];
>> 505 break;
>> 506 #ifdef CONFIG_BLK_DEV_INITRD
>> 507 case BI_INITRD:
>> 508 initrd_start = data[0] + KERNELBASE;
>> 509 initrd_end = data[0] + data[1] + KERNELBASE;
>> 510 break;
>> 511 #endif /* CONFIG_BLK_DEV_INITRD */
>> 512 #ifdef CONFIG_PPC_MULTIPLATFORM
>> 513 case BI_MACHTYPE:
>> 514 _machine = data[0];
>> 515 break;
159 #endif 516 #endif
>> 517 case BI_MEMSIZE:
>> 518 boot_mem_size = data[0];
>> 519 break;
>> 520 }
>> 521 rec = (struct bi_record *)((ulong)rec + rec->size);
>> 522 }
>> 523 }
>> 524
>> 525 /*
>> 526 * Find out what kind of machine we're on and save any data we need
>> 527 * from the early boot process (devtree is copied on pmac by prom_init()).
>> 528 * This is called very early on the boot process, after a minimal
>> 529 * MMU environment has been set up but before MMU_init is called.
>> 530 */
>> 531 void __init
>> 532 machine_init(unsigned long r3, unsigned long r4, unsigned long r5,
>> 533 unsigned long r6, unsigned long r7)
>> 534 {
>> 535 #ifdef CONFIG_CMDLINE
>> 536 strcpy(cmd_line, CONFIG_CMDLINE);
>> 537 #endif /* CONFIG_CMDLINE */
160 538
161 /* Do not copy reset vectors. offset = !! 539 #ifdef CONFIG_6xx
162 * two instructions. dst is pointer to !! 540 ppc_md.power_save = ppc6xx_idle;
163 * in block ram. If you want to copy r !! 541 #endif
164 #if !CONFIG_MANUAL_RESET_VECTOR !! 542 #ifdef CONFIG_POWER4
165 offset = 0x2; !! 543 ppc_md.power_save = power4_idle;
166 #endif 544 #endif
167 dst = (unsigned long *) (offset * size <<
168 for (src = __ivt_start + offset; src < <<
169 *dst = *src; <<
170 545
171 /* Initialize global data */ !! 546 platform_init(r3, r4, r5, r6, r7);
172 per_cpu(KM, 0) = 0x1; /* We start in !! 547
173 per_cpu(CURRENT_SAVE, 0) = (unsigned l !! 548 if (ppc_md.progress)
>> 549 ppc_md.progress("id mach(): done", 0x200);
174 } 550 }
175 551
176 void __init time_init(void) !! 552 /* Checks "l2cr=xxxx" command-line option */
>> 553 int __init ppc_setup_l2cr(char *str)
177 { 554 {
178 of_clk_init(NULL); !! 555 if (cur_cpu_spec[0]->cpu_features & CPU_FTR_L2CR) {
179 setup_cpuinfo_clk(); !! 556 unsigned long val = simple_strtoul(str, NULL, 0);
180 timer_probe(); !! 557 printk(KERN_INFO "l2cr set to %lx\n", val);
>> 558 _set_L2CR(0); /* force invalidate by disable cache */
>> 559 _set_L2CR(val); /* and enable it */
>> 560 }
>> 561 return 1;
181 } 562 }
>> 563 __setup("l2cr=", ppc_setup_l2cr);
182 564
183 #ifdef CONFIG_DEBUG_FS !! 565 #ifdef CONFIG_NVRAM
184 struct dentry *of_debugfs_root; !! 566 /* Generic nvram hooks we now look into ppc_md.nvram_read_val
>> 567 * on pmac too ;)
>> 568 * //XX Those 2 could be moved to headers
>> 569 */
>> 570 unsigned char
>> 571 nvram_read_byte(int addr)
>> 572 {
>> 573 if (ppc_md.nvram_read_val)
>> 574 return ppc_md.nvram_read_val(addr);
>> 575 return 0xff;
>> 576 }
185 577
186 static int microblaze_debugfs_init(void) !! 578 void
>> 579 nvram_write_byte(unsigned char val, int addr)
187 { 580 {
188 of_debugfs_root = debugfs_create_dir(" !! 581 if (ppc_md.nvram_write_val)
189 return 0; !! 582 ppc_md.nvram_write_val(val, addr);
190 } 583 }
191 arch_initcall(microblaze_debugfs_init); !! 584 #endif /* CONFIG_NVRAM */
192 585
193 static int __init debugfs_tlb(void) !! 586 static struct cpu cpu_devices[NR_CPUS];
>> 587
>> 588 int __init ppc_init(void)
194 { 589 {
195 debugfs_create_u32("tlb_skip", S_IRUGO !! 590 int i;
>> 591
>> 592 /* clear the progress line */
>> 593 if ( ppc_md.progress ) ppc_md.progress(" ", 0xffff);
>> 594
>> 595 /* register CPU devices */
>> 596 for (i = 0; i < NR_CPUS; i++)
>> 597 if (cpu_possible(i))
>> 598 register_cpu(&cpu_devices[i], i, NULL);
>> 599
>> 600 /* call platform init */
>> 601 if (ppc_md.init != NULL) {
>> 602 ppc_md.init();
>> 603 }
196 return 0; 604 return 0;
197 } 605 }
198 device_initcall(debugfs_tlb); !! 606
>> 607 arch_initcall(ppc_init);
>> 608
>> 609 /* Warning, IO base is not yet inited */
>> 610 void __init setup_arch(char **cmdline_p)
>> 611 {
>> 612 extern int panic_timeout;
>> 613 extern char *klimit;
>> 614 extern void do_init_bootmem(void);
>> 615
>> 616 /* so udelay does something sensible, assume <= 1000 bogomips */
>> 617 loops_per_jiffy = 500000000 / HZ;
>> 618
>> 619 #ifdef CONFIG_PPC_MULTIPLATFORM
>> 620 /* This could be called "early setup arch", it must be done
>> 621 * now because xmon need it
>> 622 */
>> 623 if (_machine == _MACH_Pmac)
>> 624 pmac_feature_init(); /* New cool way */
199 #endif 625 #endif
>> 626
>> 627 #ifdef CONFIG_XMON
>> 628 xmon_map_scc();
>> 629 if (strstr(cmd_line, "xmon"))
>> 630 xmon(0);
>> 631 #endif /* CONFIG_XMON */
>> 632 if ( ppc_md.progress ) ppc_md.progress("setup_arch: enter", 0x3eab);
>> 633
>> 634 #if defined(CONFIG_KGDB)
>> 635 kgdb_map_scc();
>> 636 set_debug_traps();
>> 637 if (strstr(cmd_line, "gdb")) {
>> 638 if (ppc_md.progress)
>> 639 ppc_md.progress("setup_arch: kgdb breakpoint", 0x4000);
>> 640 printk("kgdb breakpoint activated\n");
>> 641 breakpoint();
>> 642 }
>> 643 #endif
>> 644
>> 645 /*
>> 646 * Set cache line size based on type of cpu as a default.
>> 647 * Systems with OF can look in the properties on the cpu node(s)
>> 648 * for a possibly more accurate value.
>> 649 */
>> 650 if (cur_cpu_spec[0]->cpu_features & CPU_FTR_SPLIT_ID_CACHE) {
>> 651 dcache_bsize = cur_cpu_spec[0]->dcache_bsize;
>> 652 icache_bsize = cur_cpu_spec[0]->icache_bsize;
>> 653 ucache_bsize = 0;
>> 654 } else
>> 655 ucache_bsize = dcache_bsize = icache_bsize
>> 656 = cur_cpu_spec[0]->dcache_bsize;
>> 657
>> 658 /* reboot on panic */
>> 659 panic_timeout = 180;
>> 660
>> 661 init_mm.start_code = PAGE_OFFSET;
>> 662 init_mm.end_code = (unsigned long) _etext;
>> 663 init_mm.end_data = (unsigned long) _edata;
>> 664 init_mm.brk = (unsigned long) klimit;
>> 665
>> 666 /* Save unparsed command line copy for /proc/cmdline */
>> 667 strcpy(saved_command_line, cmd_line);
>> 668 *cmdline_p = cmd_line;
>> 669
>> 670 /* set up the bootmem stuff with available memory */
>> 671 do_init_bootmem();
>> 672 if ( ppc_md.progress ) ppc_md.progress("setup_arch: bootmem", 0x3eab);
>> 673
>> 674 ppc_md.setup_arch();
>> 675 if ( ppc_md.progress ) ppc_md.progress("arch: exit", 0x3eab);
>> 676
>> 677 paging_init();
>> 678 sort_exception_table();
>> 679
>> 680 /* this is for modules since _machine can be a define -- Cort */
>> 681 ppc_md.ppc_machine = _machine;
>> 682 }
200 683
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