2 * linux/arch/sparc64/kernel/setup.c
4 * Copyright (C) 1995,1996 David S. Miller (davem@caip.rutgers.edu)
5 * Copyright (C) 1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
8 #include <linux/errno.h>
9 #include <linux/sched.h>
10 #include <linux/kernel.h>
12 #include <linux/stddef.h>
13 #include <linux/unistd.h>
14 #include <linux/ptrace.h>
16 #include <linux/user.h>
17 #include <linux/screen_info.h>
18 #include <linux/delay.h>
20 #include <linux/seq_file.h>
21 #include <linux/syscalls.h>
22 #include <linux/kdev_t.h>
23 #include <linux/major.h>
24 #include <linux/string.h>
25 #include <linux/init.h>
26 #include <linux/inet.h>
27 #include <linux/console.h>
28 #include <linux/root_dev.h>
29 #include <linux/interrupt.h>
30 #include <linux/cpu.h>
31 #include <linux/initrd.h>
32 #include <linux/module.h>
33 #include <linux/start_kernel.h>
34 #include <linux/bootmem.h>
37 #include <asm/processor.h>
38 #include <asm/oplib.h>
40 #include <asm/pgtable.h>
41 #include <asm/idprom.h>
43 #include <asm/starfire.h>
44 #include <asm/mmu_context.h>
45 #include <asm/timer.h>
46 #include <asm/sections.h>
47 #include <asm/setup.h>
49 #include <asm/ns87303.h>
50 #include <asm/btext.h>
52 #include <asm/mdesc.h>
53 #include <asm/cacheflush.h>
58 #include <net/ipconfig.h>
64 /* Used to synchronize accesses to NatSemi SUPER I/O chip configure
65 * operations in asm/ns87303.h
67 DEFINE_SPINLOCK(ns87303_lock);
68 EXPORT_SYMBOL(ns87303_lock);
70 struct screen_info screen_info = {
71 0, 0, /* orig-x, orig-y */
73 0, /* orig-video-page */
74 0, /* orig-video-mode */
75 128, /* orig-video-cols */
76 0, 0, 0, /* unused, ega_bx, unused */
77 54, /* orig-video-lines */
78 0, /* orig-video-isVGA */
79 16 /* orig-video-points */
83 prom_console_write(struct console *con, const char *s, unsigned int n)
88 /* Exported for mm/init.c:paging_init. */
89 unsigned long cmdline_memory_size = 0;
91 static struct console prom_early_console = {
93 .write = prom_console_write,
94 .flags = CON_PRINTBUFFER | CON_BOOT | CON_ANYTIME,
99 * Process kernel command line switches that are specific to the
100 * SPARC or that require special low-level processing.
102 static void __init process_switch(char c)
109 prom_printf("boot_flags_init: Halt!\n");
113 prom_early_console.flags &= ~CON_BOOT;
116 /* Force UltraSPARC-III P-Cache on. */
117 if (tlb_type != cheetah) {
118 printk("BOOT: Ignoring P-Cache force option.\n");
121 cheetah_pcache_forced_on = 1;
122 add_taint(TAINT_MACHINE_CHECK, LOCKDEP_NOW_UNRELIABLE);
123 cheetah_enable_pcache();
127 printk("Unknown boot switch (-%c)\n", c);
132 static void __init boot_flags_init(char *commands)
135 /* Move to the start of the next "argument". */
136 while (*commands == ' ')
139 /* Process any command switches, otherwise skip it. */
140 if (*commands == '\0')
142 if (*commands == '-') {
144 while (*commands && *commands != ' ')
145 process_switch(*commands++);
148 if (!strncmp(commands, "mem=", 4))
149 cmdline_memory_size = memparse(commands + 4, &commands);
151 while (*commands && *commands != ' ')
156 extern unsigned short root_flags;
157 extern unsigned short root_dev;
158 extern unsigned short ram_flags;
159 #define RAMDISK_IMAGE_START_MASK 0x07FF
160 #define RAMDISK_PROMPT_FLAG 0x8000
161 #define RAMDISK_LOAD_FLAG 0x4000
163 extern int root_mountflags;
165 char reboot_command[COMMAND_LINE_SIZE];
167 static struct pt_regs fake_swapper_regs = { { 0, }, 0, 0, 0, 0 };
169 static void __init per_cpu_patch(void)
171 struct cpuid_patch_entry *p;
175 if (tlb_type == spitfire && !this_is_starfire)
179 if (tlb_type != hypervisor) {
180 __asm__ ("rdpr %%ver, %0" : "=r" (ver));
181 is_jbus = ((ver >> 32UL) == __JALAPENO_ID ||
182 (ver >> 32UL) == __SERRANO_ID);
186 while (p < &__cpuid_patch_end) {
187 unsigned long addr = p->addr;
192 insns = &p->starfire[0];
197 insns = &p->cheetah_jbus[0];
199 insns = &p->cheetah_safari[0];
202 insns = &p->sun4v[0];
205 prom_printf("Unknown cpu type, halting.\n");
209 *(unsigned int *) (addr + 0) = insns[0];
211 __asm__ __volatile__("flush %0" : : "r" (addr + 0));
213 *(unsigned int *) (addr + 4) = insns[1];
215 __asm__ __volatile__("flush %0" : : "r" (addr + 4));
217 *(unsigned int *) (addr + 8) = insns[2];
219 __asm__ __volatile__("flush %0" : : "r" (addr + 8));
221 *(unsigned int *) (addr + 12) = insns[3];
223 __asm__ __volatile__("flush %0" : : "r" (addr + 12));
229 void sun4v_patch_1insn_range(struct sun4v_1insn_patch_entry *start,
230 struct sun4v_1insn_patch_entry *end)
232 while (start < end) {
233 unsigned long addr = start->addr;
235 *(unsigned int *) (addr + 0) = start->insn;
237 __asm__ __volatile__("flush %0" : : "r" (addr + 0));
243 void sun4v_patch_2insn_range(struct sun4v_2insn_patch_entry *start,
244 struct sun4v_2insn_patch_entry *end)
246 while (start < end) {
247 unsigned long addr = start->addr;
249 *(unsigned int *) (addr + 0) = start->insns[0];
251 __asm__ __volatile__("flush %0" : : "r" (addr + 0));
253 *(unsigned int *) (addr + 4) = start->insns[1];
255 __asm__ __volatile__("flush %0" : : "r" (addr + 4));
261 void sun_m7_patch_2insn_range(struct sun4v_2insn_patch_entry *start,
262 struct sun4v_2insn_patch_entry *end)
264 while (start < end) {
265 unsigned long addr = start->addr;
267 *(unsigned int *) (addr + 0) = start->insns[0];
269 __asm__ __volatile__("flush %0" : : "r" (addr + 0));
271 *(unsigned int *) (addr + 4) = start->insns[1];
273 __asm__ __volatile__("flush %0" : : "r" (addr + 4));
279 static void __init sun4v_patch(void)
281 extern void sun4v_hvapi_init(void);
283 if (tlb_type != hypervisor)
286 sun4v_patch_1insn_range(&__sun4v_1insn_patch,
287 &__sun4v_1insn_patch_end);
289 sun4v_patch_2insn_range(&__sun4v_2insn_patch,
290 &__sun4v_2insn_patch_end);
291 if (sun4v_chip_type == SUN4V_CHIP_SPARC_M7 ||
292 sun4v_chip_type == SUN4V_CHIP_SPARC_SN)
293 sun_m7_patch_2insn_range(&__sun_m7_2insn_patch,
294 &__sun_m7_2insn_patch_end);
299 static void __init popc_patch(void)
301 struct popc_3insn_patch_entry *p3;
302 struct popc_6insn_patch_entry *p6;
304 p3 = &__popc_3insn_patch;
305 while (p3 < &__popc_3insn_patch_end) {
306 unsigned long i, addr = p3->addr;
308 for (i = 0; i < 3; i++) {
309 *(unsigned int *) (addr + (i * 4)) = p3->insns[i];
311 __asm__ __volatile__("flush %0"
312 : : "r" (addr + (i * 4)));
318 p6 = &__popc_6insn_patch;
319 while (p6 < &__popc_6insn_patch_end) {
320 unsigned long i, addr = p6->addr;
322 for (i = 0; i < 6; i++) {
323 *(unsigned int *) (addr + (i * 4)) = p6->insns[i];
325 __asm__ __volatile__("flush %0"
326 : : "r" (addr + (i * 4)));
333 static void __init pause_patch(void)
335 struct pause_patch_entry *p;
337 p = &__pause_3insn_patch;
338 while (p < &__pause_3insn_patch_end) {
339 unsigned long i, addr = p->addr;
341 for (i = 0; i < 3; i++) {
342 *(unsigned int *) (addr + (i * 4)) = p->insns[i];
344 __asm__ __volatile__("flush %0"
345 : : "r" (addr + (i * 4)));
352 void __init start_early_boot(void)
360 cpu = hard_smp_processor_id();
361 if (cpu >= NR_CPUS) {
362 prom_printf("Serious problem, boot cpu id (%d) >= NR_CPUS (%d)\n",
366 current_thread_info()->cpu = cpu;
373 /* On Ultra, we support all of the v8 capabilities. */
374 unsigned long sparc64_elf_hwcap = (HWCAP_SPARC_FLUSH | HWCAP_SPARC_STBAR |
375 HWCAP_SPARC_SWAP | HWCAP_SPARC_MULDIV |
377 EXPORT_SYMBOL(sparc64_elf_hwcap);
379 static const char *hwcaps[] = {
380 "flush", "stbar", "swap", "muldiv", "v9",
381 "ultra3", "blkinit", "n2",
383 /* These strings are as they appear in the machine description
384 * 'hwcap-list' property for cpu nodes.
386 "mul32", "div32", "fsmuld", "v8plus", "popc", "vis", "vis2",
387 "ASIBlkInit", "fmaf", "vis3", "hpc", "random", "trans", "fjfmau",
388 "ima", "cspare", "pause", "cbcond", NULL /*reserved for crypto */,
392 static const char *crypto_hwcaps[] = {
393 "aes", "des", "kasumi", "camellia", "md5", "sha1", "sha256",
394 "sha512", "mpmul", "montmul", "montsqr", "crc32c",
397 void cpucap_info(struct seq_file *m)
399 unsigned long caps = sparc64_elf_hwcap;
402 seq_puts(m, "cpucaps\t\t: ");
403 for (i = 0; i < ARRAY_SIZE(hwcaps); i++) {
404 unsigned long bit = 1UL << i;
405 if (hwcaps[i] && (caps & bit)) {
406 seq_printf(m, "%s%s",
407 printed ? "," : "", hwcaps[i]);
411 if (caps & HWCAP_SPARC_CRYPTO) {
414 __asm__ __volatile__("rd %%asr26, %0" : "=r" (cfr));
415 for (i = 0; i < ARRAY_SIZE(crypto_hwcaps); i++) {
416 unsigned long bit = 1UL << i;
418 seq_printf(m, "%s%s",
419 printed ? "," : "", crypto_hwcaps[i]);
427 static void __init report_one_hwcap(int *printed, const char *name)
430 printk(KERN_INFO "CPU CAPS: [");
431 printk(KERN_CONT "%s%s",
432 (*printed) ? "," : "", name);
433 if (++(*printed) == 8) {
434 printk(KERN_CONT "]\n");
439 static void __init report_crypto_hwcaps(int *printed)
444 __asm__ __volatile__("rd %%asr26, %0" : "=r" (cfr));
446 for (i = 0; i < ARRAY_SIZE(crypto_hwcaps); i++) {
447 unsigned long bit = 1UL << i;
449 report_one_hwcap(printed, crypto_hwcaps[i]);
453 static void __init report_hwcaps(unsigned long caps)
457 for (i = 0; i < ARRAY_SIZE(hwcaps); i++) {
458 unsigned long bit = 1UL << i;
459 if (hwcaps[i] && (caps & bit))
460 report_one_hwcap(&printed, hwcaps[i]);
462 if (caps & HWCAP_SPARC_CRYPTO)
463 report_crypto_hwcaps(&printed);
465 printk(KERN_CONT "]\n");
468 static unsigned long __init mdesc_cpu_hwcap_list(void)
470 struct mdesc_handle *hp;
471 unsigned long caps = 0;
480 pn = mdesc_node_by_name(hp, MDESC_NODE_NULL, "cpu");
481 if (pn == MDESC_NODE_NULL)
484 prop = mdesc_get_property(hp, pn, "hwcap-list", &len);
491 for (i = 0; i < ARRAY_SIZE(hwcaps); i++) {
492 unsigned long bit = 1UL << i;
494 if (hwcaps[i] && !strcmp(prop, hwcaps[i])) {
499 for (i = 0; i < ARRAY_SIZE(crypto_hwcaps); i++) {
500 if (!strcmp(prop, crypto_hwcaps[i]))
501 caps |= HWCAP_SPARC_CRYPTO;
504 plen = strlen(prop) + 1;
514 /* This yields a mask that user programs can use to figure out what
515 * instruction set this cpu supports.
517 static void __init init_sparc64_elf_hwcap(void)
519 unsigned long cap = sparc64_elf_hwcap;
520 unsigned long mdesc_caps;
522 if (tlb_type == cheetah || tlb_type == cheetah_plus)
523 cap |= HWCAP_SPARC_ULTRA3;
524 else if (tlb_type == hypervisor) {
525 if (sun4v_chip_type == SUN4V_CHIP_NIAGARA1 ||
526 sun4v_chip_type == SUN4V_CHIP_NIAGARA2 ||
527 sun4v_chip_type == SUN4V_CHIP_NIAGARA3 ||
528 sun4v_chip_type == SUN4V_CHIP_NIAGARA4 ||
529 sun4v_chip_type == SUN4V_CHIP_NIAGARA5 ||
530 sun4v_chip_type == SUN4V_CHIP_SPARC_M6 ||
531 sun4v_chip_type == SUN4V_CHIP_SPARC_M7 ||
532 sun4v_chip_type == SUN4V_CHIP_SPARC_SN ||
533 sun4v_chip_type == SUN4V_CHIP_SPARC64X)
534 cap |= HWCAP_SPARC_BLKINIT;
535 if (sun4v_chip_type == SUN4V_CHIP_NIAGARA2 ||
536 sun4v_chip_type == SUN4V_CHIP_NIAGARA3 ||
537 sun4v_chip_type == SUN4V_CHIP_NIAGARA4 ||
538 sun4v_chip_type == SUN4V_CHIP_NIAGARA5 ||
539 sun4v_chip_type == SUN4V_CHIP_SPARC_M6 ||
540 sun4v_chip_type == SUN4V_CHIP_SPARC_M7 ||
541 sun4v_chip_type == SUN4V_CHIP_SPARC_SN ||
542 sun4v_chip_type == SUN4V_CHIP_SPARC64X)
543 cap |= HWCAP_SPARC_N2;
546 cap |= (AV_SPARC_MUL32 | AV_SPARC_DIV32 | AV_SPARC_V8PLUS);
548 mdesc_caps = mdesc_cpu_hwcap_list();
550 if (tlb_type == spitfire)
552 if (tlb_type == cheetah || tlb_type == cheetah_plus)
553 cap |= AV_SPARC_VIS | AV_SPARC_VIS2;
554 if (tlb_type == cheetah_plus) {
555 unsigned long impl, ver;
557 __asm__ __volatile__("rdpr %%ver, %0" : "=r" (ver));
558 impl = ((ver >> 32) & 0xffff);
559 if (impl == PANTHER_IMPL)
560 cap |= AV_SPARC_POPC;
562 if (tlb_type == hypervisor) {
563 if (sun4v_chip_type == SUN4V_CHIP_NIAGARA1)
564 cap |= AV_SPARC_ASI_BLK_INIT;
565 if (sun4v_chip_type == SUN4V_CHIP_NIAGARA2 ||
566 sun4v_chip_type == SUN4V_CHIP_NIAGARA3 ||
567 sun4v_chip_type == SUN4V_CHIP_NIAGARA4 ||
568 sun4v_chip_type == SUN4V_CHIP_NIAGARA5 ||
569 sun4v_chip_type == SUN4V_CHIP_SPARC_M6 ||
570 sun4v_chip_type == SUN4V_CHIP_SPARC_M7 ||
571 sun4v_chip_type == SUN4V_CHIP_SPARC_SN ||
572 sun4v_chip_type == SUN4V_CHIP_SPARC64X)
573 cap |= (AV_SPARC_VIS | AV_SPARC_VIS2 |
574 AV_SPARC_ASI_BLK_INIT |
576 if (sun4v_chip_type == SUN4V_CHIP_NIAGARA3 ||
577 sun4v_chip_type == SUN4V_CHIP_NIAGARA4 ||
578 sun4v_chip_type == SUN4V_CHIP_NIAGARA5 ||
579 sun4v_chip_type == SUN4V_CHIP_SPARC_M6 ||
580 sun4v_chip_type == SUN4V_CHIP_SPARC_M7 ||
581 sun4v_chip_type == SUN4V_CHIP_SPARC_SN ||
582 sun4v_chip_type == SUN4V_CHIP_SPARC64X)
583 cap |= (AV_SPARC_VIS3 | AV_SPARC_HPC |
587 sparc64_elf_hwcap = cap | mdesc_caps;
589 report_hwcaps(sparc64_elf_hwcap);
591 if (sparc64_elf_hwcap & AV_SPARC_POPC)
593 if (sparc64_elf_hwcap & AV_SPARC_PAUSE)
597 void __init alloc_irqstack_bootmem(void)
599 unsigned int i, node;
601 for_each_possible_cpu(i) {
602 node = cpu_to_node(i);
604 softirq_stack[i] = __alloc_bootmem_node(NODE_DATA(node),
607 hardirq_stack[i] = __alloc_bootmem_node(NODE_DATA(node),
613 void __init setup_arch(char **cmdline_p)
615 /* Initialize PROM console and command line. */
616 *cmdline_p = prom_getbootargs();
617 strlcpy(boot_command_line, *cmdline_p, COMMAND_LINE_SIZE);
620 boot_flags_init(*cmdline_p);
621 #ifdef CONFIG_EARLYFB
622 if (btext_find_display())
624 register_console(&prom_early_console);
626 if (tlb_type == hypervisor)
627 printk("ARCH: SUN4V\n");
629 printk("ARCH: SUN4U\n");
631 #ifdef CONFIG_DUMMY_CONSOLE
632 conswitchp = &dummy_con;
638 root_mountflags &= ~MS_RDONLY;
639 ROOT_DEV = old_decode_dev(root_dev);
640 #ifdef CONFIG_BLK_DEV_RAM
641 rd_image_start = ram_flags & RAMDISK_IMAGE_START_MASK;
642 rd_prompt = ((ram_flags & RAMDISK_PROMPT_FLAG) != 0);
643 rd_doload = ((ram_flags & RAMDISK_LOAD_FLAG) != 0);
646 task_thread_info(&init_task)->kregs = &fake_swapper_regs;
649 if (!ic_set_manually) {
650 phandle chosen = prom_finddevice("/chosen");
653 cl = prom_getintdefault (chosen, "client-ip", 0);
654 sv = prom_getintdefault (chosen, "server-ip", 0);
655 gw = prom_getintdefault (chosen, "gateway-ip", 0);
661 #if defined(CONFIG_IP_PNP_BOOTP) || defined(CONFIG_IP_PNP_RARP)
662 ic_proto_enabled = 0;
668 /* Get boot processor trap_block[] setup. */
669 init_cur_cpu_trap(current_thread_info());
672 init_sparc64_elf_hwcap();
673 smp_fill_in_cpu_possible_map();
675 * Once the OF device tree and MDESC have been setup and nr_cpus has
676 * been parsed, we know the list of possible cpus. Therefore we can
677 * allocate the IRQ stacks.
679 alloc_irqstack_bootmem();
682 extern int stop_a_enabled;
684 void sun_do_break(void)
690 flush_user_windows();
694 EXPORT_SYMBOL(sun_do_break);
696 int stop_a_enabled = 1;
697 EXPORT_SYMBOL(stop_a_enabled);