2 * Initial implementation:
3 * Copyright (c) 2001 Robert Drehmel
6 * As long as the above copyright statement and this notice remain
7 * unchanged, you can do what ever you want with this file.
10 * Copyright (c) 2008 - 2012 Marius Strobl <marius@FreeBSD.org>
11 * All rights reserved.
13 * Redistribution and use in source and binary forms, with or without
14 * modification, are permitted provided that the following conditions
16 * 1. Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution.
22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35 #include <sys/cdefs.h>
36 __FBSDID("$FreeBSD$");
39 * FreeBSD/sparc64 kernel loader - machine dependent part
41 * - implements copyin and readin functions that map kernel
42 * pages on demand. The machine independent code does not
43 * know the size of the kernel early enough to pre-enter
44 * TTEs and install just one 4MB mapping seemed to limiting
49 #include <sys/param.h>
51 #include <sys/linker.h>
52 #include <sys/queue.h>
53 #include <sys/types.h>
54 #ifdef LOADER_ZFS_SUPPORT
56 #include "../zfs/libzfs.h"
60 #include <machine/asi.h>
61 #include <machine/cmt.h>
62 #include <machine/cpufunc.h>
63 #include <machine/elf.h>
64 #include <machine/fireplane.h>
65 #include <machine/jbus.h>
66 #include <machine/lsu.h>
67 #include <machine/metadata.h>
68 #include <machine/tte.h>
69 #include <machine/tlb.h>
70 #include <machine/upa.h>
71 #include <machine/ver.h>
72 #include <machine/vmparam.h>
74 #include "bootstrap.h"
78 extern char bootprog_name[], bootprog_rev[], bootprog_date[], bootprog_maker[];
83 LOADSZ = 0x1000000 /* for kernel and modules */
86 /* At least Sun Fire V1280 require page sized allocations to be claimed. */
87 CTASSERT(HEAPSZ % PAGE_SIZE == 0);
89 static struct mmu_ops {
90 void (*tlb_init)(void);
91 int (*mmu_mapin)(vm_offset_t va, vm_size_t len);
94 typedef void kernel_entry_t(vm_offset_t mdp, u_long o1, u_long o2, u_long o3,
97 static inline u_long dtlb_get_data_sun4u(u_int, u_int);
98 static int dtlb_enter_sun4u(u_int, u_long data, vm_offset_t);
99 static vm_offset_t dtlb_va_to_pa_sun4u(vm_offset_t);
100 static inline u_long itlb_get_data_sun4u(u_int, u_int);
101 static int itlb_enter_sun4u(u_int, u_long data, vm_offset_t);
102 static vm_offset_t itlb_va_to_pa_sun4u(vm_offset_t);
103 static void itlb_relocate_locked0_sun4u(void);
104 extern vm_offset_t md_load(char *, vm_offset_t *);
105 static int sparc64_autoload(void);
106 static ssize_t sparc64_readin(const int, vm_offset_t, const size_t);
107 static ssize_t sparc64_copyin(const void *, vm_offset_t, size_t);
108 static void sparc64_maphint(vm_offset_t, size_t);
109 static vm_offset_t claim_virt(vm_offset_t, size_t, int);
110 static vm_offset_t alloc_phys(size_t, int);
111 static int map_phys(int, size_t, vm_offset_t, vm_offset_t);
112 static void release_phys(vm_offset_t, u_int);
113 static int __elfN(exec)(struct preloaded_file *);
114 static int mmu_mapin_sun4u(vm_offset_t, vm_size_t);
115 static int mmu_mapin_sun4v(vm_offset_t, vm_size_t);
116 static vm_offset_t init_heap(void);
117 static phandle_t find_bsp_sun4u(phandle_t, uint32_t);
118 const char *cpu_cpuid_prop_sun4u(void);
119 uint32_t cpu_get_mid_sun4u(void);
120 static void tlb_init_sun4u(void);
121 static void tlb_init_sun4v(void);
124 typedef u_int64_t tte_t;
126 static void pmap_print_tlb_sun4u(void);
127 static void pmap_print_tte_sun4u(tte_t, tte_t);
130 static struct mmu_ops mmu_ops_sun4u = { tlb_init_sun4u, mmu_mapin_sun4u };
131 static struct mmu_ops mmu_ops_sun4v = { tlb_init_sun4v, mmu_mapin_sun4v };
134 struct tlb_entry *dtlb_store;
135 struct tlb_entry *itlb_store;
139 static u_int dtlb_slot_max;
140 static u_int itlb_slot_max;
141 static u_int tlb_locked;
144 static struct tlb_entry *tlb_store;
145 static int is_sun4v = 0;
147 * no direct TLB access on sun4v
148 * we somewhat arbitrarily declare enough
149 * slots to cover a 4GB AS with 4MB pages
151 #define SUN4V_TLB_SLOT_MAX (1 << 10)
153 static vm_offset_t curkva = 0;
154 static vm_offset_t heapva;
156 static char bootpath[64];
157 static phandle_t root;
160 * Machine dependent structures that the machine independent
163 struct devsw *devsw[] = {
164 #ifdef LOADER_DISK_SUPPORT
167 #ifdef LOADER_NET_SUPPORT
170 #ifdef LOADER_ZFS_SUPPORT
175 struct arch_switch archsw;
177 static struct file_format sparc64_elf = {
181 struct file_format *file_formats[] = {
186 struct fs_ops *file_system[] = {
187 #ifdef LOADER_UFS_SUPPORT
190 #ifdef LOADER_CD9660_SUPPORT
193 #ifdef LOADER_ZFS_SUPPORT
196 #ifdef LOADER_ZIP_SUPPORT
199 #ifdef LOADER_GZIP_SUPPORT
202 #ifdef LOADER_BZIP2_SUPPORT
205 #ifdef LOADER_NFS_SUPPORT
208 #ifdef LOADER_TFTP_SUPPORT
213 struct netif_driver *netif_drivers[] = {
214 #ifdef LOADER_NET_SUPPORT
220 extern struct console ofwconsole;
221 struct console *consoles[] = {
228 watch_phys_set_mask(vm_offset_t pa, u_long mask)
232 stxa(AA_DMMU_PWPR, ASI_DMMU, pa & (((2UL << 38) - 1) << 3));
233 lsucr = ldxa(0, ASI_LSU_CTL_REG);
234 lsucr = ((lsucr | LSU_PW) & ~LSU_PM_MASK) |
235 (mask << LSU_PM_SHIFT);
236 stxa(0, ASI_LSU_CTL_REG, lsucr);
241 watch_phys_set(vm_offset_t pa, int sz)
245 off = (u_long)pa & 7;
246 /* Test for misaligned watch points. */
249 return (watch_phys_set_mask(pa, ((1 << sz) - 1) << off));
254 watch_virt_set_mask(vm_offset_t va, u_long mask)
258 stxa(AA_DMMU_VWPR, ASI_DMMU, va & (((2UL << 41) - 1) << 3));
259 lsucr = ldxa(0, ASI_LSU_CTL_REG);
260 lsucr = ((lsucr | LSU_VW) & ~LSU_VM_MASK) |
261 (mask << LSU_VM_SHIFT);
262 stxa(0, ASI_LSU_CTL_REG, lsucr);
267 watch_virt_set(vm_offset_t va, int sz)
271 off = (u_long)va & 7;
272 /* Test for misaligned watch points. */
275 return (watch_virt_set_mask(va, ((1 << sz) - 1) << off));
283 sparc64_autoload(void)
290 sparc64_readin(const int fd, vm_offset_t va, const size_t len)
293 mmu_ops->mmu_mapin(va, len);
294 return (read(fd, (void *)va, len));
298 sparc64_copyin(const void *src, vm_offset_t dest, size_t len)
301 mmu_ops->mmu_mapin(dest, len);
302 memcpy((void *)dest, src, len);
307 sparc64_maphint(vm_offset_t va, size_t len)
312 int i, free_excess = 0;
317 if (tlb_store[va >> 22].te_pa != -1)
320 /* round up to nearest 4MB page */
321 size = (len + PAGE_MASK_4M) & ~PAGE_MASK_4M;
323 pa = alloc_phys(PAGE_SIZE_256M, PAGE_SIZE_256M);
329 pa = alloc_phys(size, PAGE_SIZE_256M);
331 pa = alloc_phys(size, PAGE_SIZE_4M);
333 panic("%s: out of memory", __func__);
335 for (i = 0; i < size; i += PAGE_SIZE_4M) {
336 mva = claim_virt(va + i, PAGE_SIZE_4M, 0);
338 panic("%s: can't claim virtual page "
339 "(wanted %#lx, got %#lx)",
342 tlb_store[mva >> 22].te_pa = pa + i;
343 if (map_phys(-1, PAGE_SIZE_4M, mva, pa + i) != 0)
344 printf("%s: can't map physical page\n", __func__);
347 release_phys(pa, PAGE_SIZE_256M);
354 claim_virt(vm_offset_t virt, size_t size, int align)
358 if (OF_call_method("claim", mmu, 3, 1, virt, size, align, &mva) == -1)
359 return ((vm_offset_t)-1);
364 alloc_phys(size_t size, int align)
366 cell_t phys_hi, phys_low;
368 if (OF_call_method("claim", memory, 2, 2, size, align, &phys_low,
370 return ((vm_offset_t)-1);
371 return ((vm_offset_t)phys_hi << 32 | phys_low);
375 map_phys(int mode, size_t size, vm_offset_t virt, vm_offset_t phys)
378 return (OF_call_method("map", mmu, 5, 0, (uint32_t)phys,
379 (uint32_t)(phys >> 32), virt, size, mode));
383 release_phys(vm_offset_t phys, u_int size)
386 (void)OF_call_method("release", memory, 3, 0, (uint32_t)phys,
387 (uint32_t)(phys >> 32), size);
391 __elfN(exec)(struct preloaded_file *fp)
393 struct file_metadata *fmp;
399 if ((fmp = file_findmetadata(fp, MODINFOMD_ELFHDR)) == 0)
401 e = (Elf_Ehdr *)&fmp->md_data;
403 if ((error = md_load(fp->f_args, &mdp)) != 0)
406 printf("jumping to kernel entry at %#lx.\n", e->e_entry);
408 pmap_print_tlb_sun4u();
415 OF_release((void *)heapva, HEAPSZ);
417 ((kernel_entry_t *)entry)(mdp, 0, 0, 0, openfirmware);
419 panic("%s: exec returned", __func__);
423 dtlb_get_data_sun4u(u_int tlb, u_int slot)
427 slot = TLB_DAR_SLOT(tlb, slot);
429 * We read ASI_DTLB_DATA_ACCESS_REG twice back-to-back in order to
430 * work around errata of USIII and beyond.
432 pstate = rdpr(pstate);
433 wrpr(pstate, pstate & ~PSTATE_IE, 0);
434 (void)ldxa(slot, ASI_DTLB_DATA_ACCESS_REG);
435 data = ldxa(slot, ASI_DTLB_DATA_ACCESS_REG);
436 wrpr(pstate, pstate, 0);
441 itlb_get_data_sun4u(u_int tlb, u_int slot)
445 slot = TLB_DAR_SLOT(tlb, slot);
447 * We read ASI_DTLB_DATA_ACCESS_REG twice back-to-back in order to
448 * work around errata of USIII and beyond.
450 pstate = rdpr(pstate);
451 wrpr(pstate, pstate & ~PSTATE_IE, 0);
452 (void)ldxa(slot, ASI_ITLB_DATA_ACCESS_REG);
453 data = ldxa(slot, ASI_ITLB_DATA_ACCESS_REG);
454 wrpr(pstate, pstate, 0);
459 dtlb_va_to_pa_sun4u(vm_offset_t va)
464 pstate = rdpr(pstate);
465 wrpr(pstate, pstate & ~PSTATE_IE, 0);
466 for (i = 0; i < dtlb_slot_max; i++) {
467 reg = ldxa(TLB_DAR_SLOT(tlb_locked, i),
468 ASI_DTLB_TAG_READ_REG);
469 if (TLB_TAR_VA(reg) != va)
471 reg = dtlb_get_data_sun4u(tlb_locked, i);
472 wrpr(pstate, pstate, 0);
474 if (cpu_impl == CPU_IMPL_SPARC64V ||
475 cpu_impl >= CPU_IMPL_ULTRASPARCIII)
476 return (reg & TD_PA_CH_MASK);
477 return (reg & TD_PA_SF_MASK);
479 wrpr(pstate, pstate, 0);
484 itlb_va_to_pa_sun4u(vm_offset_t va)
489 pstate = rdpr(pstate);
490 wrpr(pstate, pstate & ~PSTATE_IE, 0);
491 for (i = 0; i < itlb_slot_max; i++) {
492 reg = ldxa(TLB_DAR_SLOT(tlb_locked, i),
493 ASI_ITLB_TAG_READ_REG);
494 if (TLB_TAR_VA(reg) != va)
496 reg = itlb_get_data_sun4u(tlb_locked, i);
497 wrpr(pstate, pstate, 0);
499 if (cpu_impl == CPU_IMPL_SPARC64V ||
500 cpu_impl >= CPU_IMPL_ULTRASPARCIII)
501 return (reg & TD_PA_CH_MASK);
502 return (reg & TD_PA_SF_MASK);
504 wrpr(pstate, pstate, 0);
509 dtlb_enter_sun4u(u_int index, u_long data, vm_offset_t virt)
512 return (OF_call_method("SUNW,dtlb-load", mmu, 3, 0, index, data,
517 itlb_enter_sun4u(u_int index, u_long data, vm_offset_t virt)
520 if (cpu_impl == CPU_IMPL_ULTRASPARCIIIp && index == 0 &&
522 panic("%s: won't enter locked TLB entry at index 0 on USIII+",
524 return (OF_call_method("SUNW,itlb-load", mmu, 3, 0, index, data,
529 itlb_relocate_locked0_sun4u(void)
531 u_long data, pstate, tag;
534 if (cpu_impl != CPU_IMPL_ULTRASPARCIIIp)
537 pstate = rdpr(pstate);
538 wrpr(pstate, pstate & ~PSTATE_IE, 0);
540 data = itlb_get_data_sun4u(tlb_locked, 0);
541 if ((data & (TD_V | TD_L)) != (TD_V | TD_L)) {
542 wrpr(pstate, pstate, 0);
546 /* Flush the mapping of slot 0. */
547 tag = ldxa(TLB_DAR_SLOT(tlb_locked, 0), ASI_ITLB_TAG_READ_REG);
548 stxa(TLB_DEMAP_VA(TLB_TAR_VA(tag)) | TLB_DEMAP_PRIMARY |
549 TLB_DEMAP_PAGE, ASI_IMMU_DEMAP, 0);
550 flush(0); /* The USIII-family ignores the address. */
553 * Search a replacement slot != 0 and enter the data and tag
554 * that formerly were in slot 0.
556 for (i = 1; i < itlb_slot_max; i++) {
557 if ((itlb_get_data_sun4u(tlb_locked, i) & TD_V) != 0)
560 stxa(AA_IMMU_TAR, ASI_IMMU, tag);
561 stxa(TLB_DAR_SLOT(tlb_locked, i), ASI_ITLB_DATA_ACCESS_REG,
563 flush(0); /* The USIII-family ignores the address. */
566 wrpr(pstate, pstate, 0);
567 if (i == itlb_slot_max)
568 panic("%s: could not find a replacement slot", __func__);
572 mmu_mapin_sun4u(vm_offset_t va, vm_size_t len)
578 if (va + len > curkva)
581 pa = (vm_offset_t)-1;
582 len += va & PAGE_MASK_4M;
585 if (dtlb_va_to_pa_sun4u(va) == (vm_offset_t)-1 ||
586 itlb_va_to_pa_sun4u(va) == (vm_offset_t)-1) {
587 /* Allocate a physical page, claim the virtual area. */
588 if (pa == (vm_offset_t)-1) {
589 pa = alloc_phys(PAGE_SIZE_4M, PAGE_SIZE_4M);
590 if (pa == (vm_offset_t)-1)
591 panic("%s: out of memory", __func__);
592 mva = claim_virt(va, PAGE_SIZE_4M, 0);
594 panic("%s: can't claim virtual page "
595 "(wanted %#lx, got %#lx)",
598 * The mappings may have changed, be paranoid.
603 * Actually, we can only allocate two pages less at
604 * most (depending on the kernel TSB size).
606 if (dtlb_slot >= dtlb_slot_max)
607 panic("%s: out of dtlb_slots", __func__);
608 if (itlb_slot >= itlb_slot_max)
609 panic("%s: out of itlb_slots", __func__);
610 data = TD_V | TD_4M | TD_PA(pa) | TD_L | TD_CP |
612 dtlb_store[dtlb_slot].te_pa = pa;
613 dtlb_store[dtlb_slot].te_va = va;
614 index = dtlb_slot_max - dtlb_slot - 1;
615 if (dtlb_enter_sun4u(index, data, va) < 0)
616 panic("%s: can't enter dTLB slot %d data "
617 "%#lx va %#lx", __func__, index, data,
620 itlb_store[itlb_slot].te_pa = pa;
621 itlb_store[itlb_slot].te_va = va;
622 index = itlb_slot_max - itlb_slot - 1;
623 if (itlb_enter_sun4u(index, data, va) < 0)
624 panic("%s: can't enter iTLB slot %d data "
625 "%#lx va %#lxd", __func__, index, data,
628 pa = (vm_offset_t)-1;
630 len -= len > PAGE_SIZE_4M ? PAGE_SIZE_4M : len;
633 if (pa != (vm_offset_t)-1)
634 release_phys(pa, PAGE_SIZE_4M);
639 mmu_mapin_sun4v(vm_offset_t va, vm_size_t len)
643 if (va + len > curkva)
646 pa = (vm_offset_t)-1;
647 len += va & PAGE_MASK_4M;
650 if ((va >> 22) > SUN4V_TLB_SLOT_MAX)
651 panic("%s: trying to map more than 4GB", __func__);
652 if (tlb_store[va >> 22].te_pa == -1) {
653 /* Allocate a physical page, claim the virtual area */
654 if (pa == (vm_offset_t)-1) {
655 pa = alloc_phys(PAGE_SIZE_4M, PAGE_SIZE_4M);
656 if (pa == (vm_offset_t)-1)
657 panic("%s: out of memory", __func__);
658 mva = claim_virt(va, PAGE_SIZE_4M, 0);
660 panic("%s: can't claim virtual page "
661 "(wanted %#lx, got %#lx)",
665 tlb_store[va >> 22].te_pa = pa;
666 if (map_phys(-1, PAGE_SIZE_4M, va, pa) == -1)
667 printf("%s: can't map physical page\n",
669 pa = (vm_offset_t)-1;
671 len -= len > PAGE_SIZE_4M ? PAGE_SIZE_4M : len;
674 if (pa != (vm_offset_t)-1)
675 release_phys(pa, PAGE_SIZE_4M);
683 /* There is no need for continuous physical heap memory. */
684 heapva = (vm_offset_t)OF_claim((void *)HEAPVA, HEAPSZ, 32);
689 find_bsp_sun4u(phandle_t node, uint32_t bspid)
691 char type[sizeof("cpu")];
695 for (; node > 0; node = OF_peer(node)) {
696 child = OF_child(node);
698 child = find_bsp_sun4u(child, bspid);
702 if (OF_getprop(node, "device_type", type,
705 if (strcmp(type, "cpu") != 0)
707 if (OF_getprop(node, cpu_cpuid_prop_sun4u(), &cpuid,
718 cpu_cpuid_prop_sun4u(void)
722 case CPU_IMPL_SPARC64:
723 case CPU_IMPL_SPARC64V:
724 case CPU_IMPL_ULTRASPARCI:
725 case CPU_IMPL_ULTRASPARCII:
726 case CPU_IMPL_ULTRASPARCIIi:
727 case CPU_IMPL_ULTRASPARCIIe:
728 return ("upa-portid");
729 case CPU_IMPL_ULTRASPARCIII:
730 case CPU_IMPL_ULTRASPARCIIIp:
731 case CPU_IMPL_ULTRASPARCIIIi:
732 case CPU_IMPL_ULTRASPARCIIIip:
734 case CPU_IMPL_ULTRASPARCIV:
735 case CPU_IMPL_ULTRASPARCIVp:
743 cpu_get_mid_sun4u(void)
747 case CPU_IMPL_SPARC64:
748 case CPU_IMPL_SPARC64V:
749 case CPU_IMPL_ULTRASPARCI:
750 case CPU_IMPL_ULTRASPARCII:
751 case CPU_IMPL_ULTRASPARCIIi:
752 case CPU_IMPL_ULTRASPARCIIe:
753 return (UPA_CR_GET_MID(ldxa(0, ASI_UPA_CONFIG_REG)));
754 case CPU_IMPL_ULTRASPARCIII:
755 case CPU_IMPL_ULTRASPARCIIIp:
756 return (FIREPLANE_CR_GET_AID(ldxa(AA_FIREPLANE_CONFIG,
757 ASI_FIREPLANE_CONFIG_REG)));
758 case CPU_IMPL_ULTRASPARCIIIi:
759 case CPU_IMPL_ULTRASPARCIIIip:
760 return (JBUS_CR_GET_JID(ldxa(0, ASI_JBUS_CONFIG_REG)));
761 case CPU_IMPL_ULTRASPARCIV:
762 case CPU_IMPL_ULTRASPARCIVp:
763 return (INTR_ID_GET_ID(ldxa(AA_INTR_ID, ASI_INTR_ID)));
774 cpu_impl = VER_IMPL(rdpr(ver));
776 case CPU_IMPL_SPARC64:
777 case CPU_IMPL_ULTRASPARCI:
778 case CPU_IMPL_ULTRASPARCII:
779 case CPU_IMPL_ULTRASPARCIIi:
780 case CPU_IMPL_ULTRASPARCIIe:
781 tlb_locked = TLB_DAR_T32;
783 case CPU_IMPL_ULTRASPARCIII:
784 case CPU_IMPL_ULTRASPARCIIIp:
785 case CPU_IMPL_ULTRASPARCIIIi:
786 case CPU_IMPL_ULTRASPARCIIIip:
787 case CPU_IMPL_ULTRASPARCIV:
788 case CPU_IMPL_ULTRASPARCIVp:
789 tlb_locked = TLB_DAR_T16;
791 case CPU_IMPL_SPARC64V:
792 tlb_locked = TLB_DAR_FTLB;
795 bsp = find_bsp_sun4u(OF_child(root), cpu_get_mid_sun4u());
797 panic("%s: no node for bootcpu?!?!", __func__);
799 if (OF_getprop(bsp, "#dtlb-entries", &dtlb_slot_max,
800 sizeof(dtlb_slot_max)) == -1 ||
801 OF_getprop(bsp, "#itlb-entries", &itlb_slot_max,
802 sizeof(itlb_slot_max)) == -1)
803 panic("%s: can't get TLB slot max.", __func__);
805 if (cpu_impl == CPU_IMPL_ULTRASPARCIIIp) {
807 printf("pre fixup:\n");
808 pmap_print_tlb_sun4u();
812 * Relocate the locked entry in it16 slot 0 (if existent)
813 * as part of working around Cheetah+ erratum 34.
815 itlb_relocate_locked0_sun4u();
818 printf("post fixup:\n");
819 pmap_print_tlb_sun4u();
823 dtlb_store = malloc(dtlb_slot_max * sizeof(*dtlb_store));
824 itlb_store = malloc(itlb_slot_max * sizeof(*itlb_store));
825 if (dtlb_store == NULL || itlb_store == NULL)
826 panic("%s: can't allocate TLB store", __func__);
833 tlb_store = malloc(SUN4V_TLB_SLOT_MAX * sizeof(*tlb_store));
834 memset(tlb_store, 0xFF, SUN4V_TLB_SLOT_MAX * sizeof(*tlb_store));
837 #ifdef LOADER_ZFS_SUPPORT
839 sparc64_zfs_probe(void)
842 struct zfs_devdesc zfs_currdev;
843 char alias[64], devname[sizeof(alias) + sizeof(":x") - 1];
844 char type[sizeof("device_type")];
845 char *bdev, *dev, *odev;
848 phandle_t aliases, options;
850 /* Get the GUID of the ZFS pool on the boot device. */
852 zfs_probe_dev(bootpath, &guid);
855 * Get the GUIDs of the ZFS pools on any additional disks listed in
856 * the boot-device environment variable.
858 if ((aliases = OF_finddevice("/aliases")) == -1)
860 options = OF_finddevice("/options");
861 len = OF_getproplen(options, "boot-device");
864 bdev = odev = malloc(len + 1);
867 if (OF_getprop(options, "boot-device", bdev, len) <= 0)
870 while ((dev = strsep(&bdev, " ")) != NULL) {
874 (void)OF_getprop(aliases, dev, alias, sizeof(alias));
876 * Don't probe the boot disk twice. Note that bootpath
877 * includes the partition specifier.
879 if (strncmp(alias, bootpath, strlen(alias)) == 0)
881 if (OF_getprop(OF_finddevice(alias), "device_type", type,
884 if (strcmp(type, "block") != 0)
887 /* Find freebsd-zfs slices in the VTOC. */
888 fd = open(alias, O_RDONLY);
891 lseek(fd, 0, SEEK_SET);
892 if (read(fd, &vtoc, sizeof(vtoc)) != sizeof(vtoc)) {
898 for (part = 0; part < 8; part++) {
899 if (part == 2 || vtoc.part[part].tag !=
900 VTOC_TAG_FREEBSD_ZFS)
902 (void)sprintf(devname, "%s:%c", alias, part + 'a');
903 if (zfs_probe_dev(devname, NULL) == ENXIO)
911 zfs_currdev.pool_guid = guid;
912 zfs_currdev.root_guid = 0;
913 zfs_currdev.d_dev = &zfs_dev;
914 zfs_currdev.d_type = zfs_currdev.d_dev->dv_type;
915 (void)strncpy(bootpath, zfs_fmtdev(&zfs_currdev),
916 sizeof(bootpath) - 1);
917 bootpath[sizeof(bootpath) - 1] = '\0';
920 #endif /* LOADER_ZFS_SUPPORT */
923 main(int (*openfirm)(void *))
929 * Tell the Open Firmware functions where they find the OFW gate.
933 archsw.arch_getdev = ofw_getdev;
934 archsw.arch_copyin = sparc64_copyin;
935 archsw.arch_copyout = ofw_copyout;
936 archsw.arch_readin = sparc64_readin;
937 archsw.arch_autoload = sparc64_autoload;
938 archsw.arch_maphint = sparc64_maphint;
939 #ifdef LOADER_ZFS_SUPPORT
940 archsw.arch_zfs_probe = sparc64_zfs_probe;
943 if (init_heap() == (vm_offset_t)-1)
945 setheap((void *)heapva, (void *)(heapva + HEAPSZ));
948 * Probe for a console.
952 if ((root = OF_peer(0)) == -1)
953 panic("%s: can't get root phandle", __func__);
954 OF_getprop(root, "compatible", compatible, sizeof(compatible));
955 if (!strcmp(compatible, "sun4v")) {
956 printf("\nBooting with sun4v support.\n");
957 mmu_ops = &mmu_ops_sun4v;
960 printf("\nBooting with sun4u support.\n");
961 mmu_ops = &mmu_ops_sun4u;
967 * Set up the current device.
969 OF_getprop(chosen, "bootpath", bootpath, sizeof(bootpath));
972 * Sun compatible bootable CD-ROMs have a disk label placed
973 * before the cd9660 data, with the actual filesystem being
974 * in the first partition, while the other partitions contain
975 * pseudo disk labels with embedded boot blocks for different
976 * architectures, which may be followed by UFS filesystems.
977 * The firmware will set the boot path to the partition it
978 * boots from ('f' in the sun4u case), but we want the kernel
979 * to be loaded from the cd9660 fs ('a'), so the boot path
980 * needs to be altered.
982 if (bootpath[strlen(bootpath) - 2] == ':' &&
983 bootpath[strlen(bootpath) - 1] == 'f' &&
984 strstr(bootpath, "cdrom") != NULL) {
985 bootpath[strlen(bootpath) - 1] = 'a';
986 printf("Boot path set to %s\n", bootpath);
990 * Initialize devices.
992 for (dp = devsw; *dp != 0; dp++)
993 if ((*dp)->dv_init != 0)
997 * Now that sparc64_zfs_probe() might have altered bootpath,
1000 env_setenv("currdev", EV_VOLATILE, bootpath,
1001 ofw_setcurrdev, env_nounset);
1002 env_setenv("loaddev", EV_VOLATILE, bootpath,
1003 env_noset, env_nounset);
1006 printf("%s, Revision %s\n", bootprog_name, bootprog_rev);
1007 printf("(%s, %s)\n", bootprog_maker, bootprog_date);
1008 printf("bootpath=\"%s\"\n", bootpath);
1010 /* Give control to the machine independent loader code. */
1015 COMMAND_SET(heap, "heap", "show heap usage", command_heap);
1018 command_heap(int argc, char *argv[])
1022 printf("heap base at %p, top at %p, upper limit at %p\n", heapva,
1023 sbrk(0), heapva + HEAPSZ);
1027 COMMAND_SET(reboot, "reboot", "reboot the system", command_reboot);
1030 command_reboot(int argc, char *argv[])
1034 for (i = 0; devsw[i] != NULL; ++i)
1035 if (devsw[i]->dv_cleanup != NULL)
1036 (devsw[i]->dv_cleanup)();
1038 printf("Rebooting...\n");
1042 /* provide this for panic, as it's not in the startup code */
1051 static const char *const page_sizes[] = {
1052 " 8k", " 64k", "512k", " 4m"
1056 pmap_print_tte_sun4u(tte_t tag, tte_t tte)
1060 page_sizes[(tte >> TD_SIZE_SHIFT) & TD_SIZE_MASK],
1061 tag & TD_G ? "G" : " ");
1062 printf(tte & TD_W ? "W " : " ");
1063 printf(tte & TD_P ? "\e[33mP\e[0m " : " ");
1064 printf(tte & TD_E ? "E " : " ");
1065 printf(tte & TD_CV ? "CV " : " ");
1066 printf(tte & TD_CP ? "CP " : " ");
1067 printf(tte & TD_L ? "\e[32mL\e[0m " : " ");
1068 printf(tte & TD_IE ? "IE " : " ");
1069 printf(tte & TD_NFO ? "NFO " : " ");
1070 printf("pa=0x%lx va=0x%lx ctx=%ld\n",
1071 TD_PA(tte), TLB_TAR_VA(tag), TLB_TAR_CTX(tag));
1075 pmap_print_tlb_sun4u(void)
1081 pstate = rdpr(pstate);
1082 for (i = 0; i < itlb_slot_max; i++) {
1083 wrpr(pstate, pstate & ~PSTATE_IE, 0);
1084 tte = itlb_get_data_sun4u(tlb_locked, i);
1085 wrpr(pstate, pstate, 0);
1088 tag = ldxa(TLB_DAR_SLOT(tlb_locked, i),
1089 ASI_ITLB_TAG_READ_REG);
1090 printf("iTLB-%2u: ", i);
1091 pmap_print_tte_sun4u(tag, tte);
1093 for (i = 0; i < dtlb_slot_max; i++) {
1094 wrpr(pstate, pstate & ~PSTATE_IE, 0);
1095 tte = dtlb_get_data_sun4u(tlb_locked, i);
1096 wrpr(pstate, pstate, 0);
1099 tag = ldxa(TLB_DAR_SLOT(tlb_locked, i),
1100 ASI_DTLB_TAG_READ_REG);
1101 printf("dTLB-%2u: ", i);
1102 pmap_print_tte_sun4u(tag, tte);