/* * CDDL HEADER START * * The contents of this file are subject to the terms of the * Common Development and Distribution License (the "License"). * You may not use this file except in compliance with the License. * * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE * or http://www.opensolaris.org/os/licensing. * See the License for the specific language governing permissions * and limitations under the License. * * When distributing Covered Code, include this CDDL HEADER in each * file and include the License file at usr/src/OPENSOLARIS.LICENSE. * If applicable, add the following below this CDDL HEADER, with the * fields enclosed by brackets "[]" replaced with your own identifying * information: Portions Copyright [yyyy] [name of copyright owner] * * CDDL HEADER END */ /* * Copyright 2009 Sun Microsystems, Inc. All rights reserved. * Use is subject to license terms. */ /* * Definitions of interfaces that provide services from the secondary * boot program to its clients (primarily Solaris, krtld, kmdb and their * successors.) This interface replaces the bootops (BOP) implementation * as the interface to be called by boot clients. * */ #include #include #include #include #include #include #include #include #include #include #include struct bootops *bootops; struct bootops kbootops; pnode_t chosennode; /* * Flag to disable the use of real ramdisks (in the OBP - on Sparc) when * the associated memory is no longer available. */ int bootops_obp_ramdisk_disabled = 0; #define FAKE_ROOT (pnode_t)1 struct fakeprop { char *bootname; pnode_t promnode; char *promname; } fakeprops[] = { { "mfg-name", FAKE_ROOT, "name" }, { NULL, 0, NULL } }; static void fakelook_init(void) { struct fakeprop *fpp = fakeprops; while (fpp->bootname != NULL) { switch (fpp->promnode) { case FAKE_ROOT: fpp->promnode = prom_rootnode(); break; } fpp++; } } static struct fakeprop * fakelook(const char *prop) { struct fakeprop *fpp = fakeprops; while (fpp->bootname != NULL) { if (strcmp(prop, fpp->bootname) == 0) return (fpp); fpp++; } return (NULL); } ihandle_t bfs_ih = OBP_BADNODE; ihandle_t afs_ih = OBP_BADNODE; void bop_init(void) { chosennode = prom_chosennode(); fakelook_init(); /* fake bootops - it needs to point to non-NULL */ bootops = &kbootops; } #define MAXPROMFD 16 static ihandle_t prom_ihs[MAXPROMFD]; int filter_etc = 1; /* * Implementation of the "open" boot service. */ /*ARGSUSED*/ int bop_open(const char *name, int flags) { int fd = -1, layered; ihandle_t ih; /* * Only look underneath archive for /etc files */ layered = filter_etc ? strncmp(name, "/etc", sizeof ("/etc") - 1) == 0 : 1; if (afs_ih != OBP_BADNODE) { ih = afs_ih; fd = prom_fopen(ih, (char *)name); if (fd == -1 && !layered) return (BOOT_SVC_FAIL); } if (fd == -1 && bfs_ih != OBP_BADNODE) { ih = bfs_ih; fd = prom_fopen(ih, (char *)name); } if (fd == -1) return (BOOT_SVC_FAIL); ASSERT(fd < MAXPROMFD); ASSERT(prom_ihs[fd] == 0); prom_ihs[fd] = ih; return (fd); } static void spinner(void) { static int pos; static char ind[] = "|/-\\"; /* that's entertainment? */ static int blks_read; if ((blks_read++ & 0x3) == 0) prom_printf("%c\b", ind[pos++ & 3]); } /* * Implementation of the "read" boot service. */ int bop_read(int fd, caddr_t buf, size_t size) { ASSERT(prom_ihs[fd] != 0); spinner(); return (prom_fread(prom_ihs[fd], fd, buf, size)); } /* * Implementation of the "seek" boot service. */ int bop_seek(int fd, off_t off) { ASSERT(prom_ihs[fd] != 0); return (prom_fseek(prom_ihs[fd], fd, off)); } /* * Implementation of the "close" boot service. */ int bop_close(int fd) { ASSERT(prom_ihs[fd] != 0); prom_fclose(prom_ihs[fd], fd); prom_ihs[fd] = 0; return (0); } /* * Simple temp memory allocator * * >PAGESIZE allocations are gotten directly from prom at bighand * smaller ones are satisfied from littlehand, which does a * 1 page bighand allocation when it runs out of memory */ static caddr_t bighand = (caddr_t)BOOTTMPBASE; static caddr_t littlehand = (caddr_t)BOOTTMPBASE; #define NTMPALLOC 128 static caddr_t temp_base[NTMPALLOC]; static size_t temp_size[NTMPALLOC]; static int temp_indx; #if defined(C_OBP) void cobp_free_mem(caddr_t, size_t); #endif /* C_OBP */ /* * temporary memory storage until bop_tmp_freeall is called * (after the kernel heap is initialized) */ caddr_t bop_temp_alloc(size_t size, int align) { caddr_t ret; /* * OBP allocs 10MB to boot, which is where virthint = 0 * memory was allocated from. Without boot, we allocate * from BOOTTMPBASE and free when we're ready to take * the machine from OBP */ if (size < PAGESIZE) { size_t left = ALIGN(littlehand, PAGESIZE) - (uintptr_t)littlehand; size = roundup(size, MAX(align, 8)); if (size <= left) { ret = littlehand; littlehand += size; return (ret); } littlehand = bighand + size; } size = roundup(size, PAGESIZE); ret = prom_alloc(bighand, size, align); if (ret == NULL) prom_panic("boot temp overflow"); bighand += size; /* log it for bop_fini() */ temp_base[temp_indx] = ret; temp_size[temp_indx] = size; if (++temp_indx == NTMPALLOC) prom_panic("out of bop temp space"); return (ret); } void bop_temp_freeall(void) { int i; /* * We have to call prom_free() with the same args * as we used in prom_alloc() */ for (i = 0; i < NTMPALLOC; i++) { if (temp_base[i] == NULL) break; #if !defined(C_OBP) prom_free(temp_base[i], temp_size[i]); #else /* !C_OBP */ cobp_free_mem(temp_base[i], temp_size[i]); #endif /* !C_OBP */ } } /* * Implementation of the "alloc" boot service. */ caddr_t bop_alloc(caddr_t virthint, size_t size, int align) { if (virthint == NULL) return (bop_temp_alloc(size, align)); return (prom_alloc(virthint, size, align)); } /* * Similar to bop_alloc functionality except that * it will try to breakup into PAGESIZE chunk allocations * if the original single chunk request failed. * This routine does not guarantee physical contig * allocation. */ caddr_t bop_alloc_chunk(caddr_t virthint, size_t size, int align) { caddr_t ret; size_t chunksz; if (virthint == NULL) return (bop_temp_alloc(size, align)); if ((ret = prom_alloc(virthint, size, align))) return (ret); /* * Normal request to prom_alloc has failed. * We will attempt to satisfy the request by allocating * smaller chunks resulting in allocation that * will be virtually contiguous but potentially * not physically contiguous. There are additional * requirements before we want to do this: * 1. virthirt must be PAGESIZE aligned. * 2. align must not be greater than PAGESIZE * 3. size request must be at least PAGESIZE * Otherwise, we will revert back to the original * bop_alloc behavior i.e. return failure. */ if (P2PHASE_TYPED(virthint, PAGESIZE, size_t) != 0 || align > PAGESIZE || size < PAGESIZE) return (ret); /* * Now we will break up the allocation * request in smaller chunks that are * always PAGESIZE aligned. */ ret = virthint; chunksz = P2ALIGN((size >> 1), PAGESIZE); chunksz = MAX(chunksz, PAGESIZE); while (size) { do { /*LINTED E_FUNC_SET_NOT_USED*/ caddr_t res; if ((res = prom_alloc(virthint, chunksz, PAGESIZE))) { ASSERT(virthint == res); break; } chunksz >>= 1; chunksz = P2ALIGN(chunksz, PAGESIZE); } while (chunksz >= PAGESIZE); if (chunksz < PAGESIZE) /* Can't really happen.. */ prom_panic("bop_alloc_chunk failed"); virthint += chunksz; size -= chunksz; if (size < chunksz) chunksz = size; } return (ret); } /* * Implementation of the "alloc_virt" boot service */ caddr_t bop_alloc_virt(caddr_t virt, size_t size) { return (prom_claim_virt(size, virt)); } /* * Implementation of the "free" boot service. */ /*ARGSUSED*/ void bop_free(caddr_t virt, size_t size) { prom_free(virt, size); } /* * Implementation of the "getproplen" boot service. */ /*ARGSUSED*/ int bop_getproplen(const char *name) { struct fakeprop *fpp; pnode_t node; char *prop; fpp = fakelook(name); if (fpp != NULL) { node = fpp->promnode; prop = fpp->promname; } else { node = chosennode; prop = (char *)name; } return (prom_getproplen(node, prop)); } /* * Implementation of the "getprop" boot service. */ /*ARGSUSED*/ int bop_getprop(const char *name, void *value) { struct fakeprop *fpp; pnode_t node; char *prop; fpp = fakelook(name); if (fpp != NULL) { node = fpp->promnode; prop = fpp->promname; } else { node = chosennode; prop = (char *)name; } return (prom_getprop(node, prop, value)); } /* * Implementation of the "print" boot service. */ /*ARGSUSED*/ void vbop_printf(void *ptr, const char *fmt, va_list ap) { prom_vprintf(fmt, ap); } void bop_printf(void *ops, const char *fmt, ...) { va_list adx; va_start(adx, fmt); vbop_printf(ops, fmt, adx); va_end(adx); } /* * Special routine for kmdb */ void bop_putsarg(const char *fmt, char *arg) { prom_printf(fmt, arg); } /* * panic for krtld only */ void bop_panic(const char *s) { prom_panic((char *)s); } /* * Implementation of the "mount" boot service. * */ /*ARGSUSED*/ int bop_mountroot(void) { (void) prom_getprop(chosennode, "bootfs", (caddr_t)&bfs_ih); (void) prom_getprop(chosennode, "archfs", (caddr_t)&afs_ih); return ((bfs_ih == -1 && afs_ih == -1) ? BOOT_SVC_FAIL : BOOT_SVC_OK); } /* * Implementation of the "unmountroot" boot service. */ /*ARGSUSED*/ int bop_unmountroot(void) { if (bfs_ih != OBP_BADNODE) { (void) prom_close(bfs_ih); bfs_ih = OBP_BADNODE; } if (afs_ih != OBP_BADNODE) { (void) prom_close(afs_ih); afs_ih = OBP_BADNODE; } return (BOOT_SVC_OK); } /* * Implementation of the "fstat" boot service. */ int bop_fstat(int fd, struct bootstat *st) { ASSERT(prom_ihs[fd] != 0); return (prom_fsize(prom_ihs[fd], fd, (size_t *)&st->st_size)); } int boot_compinfo(int fd, struct compinfo *cb) { ASSERT(prom_ihs[fd] != 0); return (prom_compinfo(prom_ihs[fd], fd, &cb->iscmp, &cb->fsize, &cb->blksize)); } void bop_free_archive(void) { char archive[OBP_MAXPATHLEN]; pnode_t arph; uint32_t arbase, arsize, alloc_size; /* * If the ramdisk will eventually be root, or we weren't * booted via the archive, then nothing to do here */ if (root_is_ramdisk == B_TRUE || prom_getprop(chosennode, "bootarchive", archive) == -1) return; arph = prom_finddevice(archive); if (arph == -1 || prom_getprop(arph, OBP_ALLOCSIZE, (caddr_t)&alloc_size) == -1 || prom_getprop(arph, OBP_SIZE, (caddr_t)&arsize) == -1 || prom_getprop(arph, OBP_ADDRESS, (caddr_t)&arbase) == -1) prom_panic("can't free boot archive"); bootops_obp_ramdisk_disabled = 1; #if !defined(C_OBP) if (alloc_size == 0) prom_free((caddr_t)(uintptr_t)arbase, arsize); else { uint32_t arend = arbase + arsize; while (arbase < arend) { prom_free((caddr_t)(uintptr_t)arbase, MIN(alloc_size, arend - arbase)); arbase += alloc_size; } } #else /* !C_OBP */ cobp_free_mem((caddr_t)(uintptr_t)arbase, arsize); #endif /* !C_OBP */ } #if defined(C_OBP) /* * Blech. The C proms have a bug when freeing areas that cross * page sizes, so we have to break up the free into sections * bounded by the various pagesizes. */ void cobp_free_mem(caddr_t base, size_t size) { int i; size_t len, pgsz; /* * Large pages only used when size > 512k */ if (size < MMU_PAGESIZE512K || ((uintptr_t)base & MMU_PAGEOFFSET512K) != 0) { prom_free(base, size); return; } for (i = 3; i >= 0; i--) { pgsz = page_get_pagesize(i); if (size < pgsz) continue; len = size & ~(pgsz - 1); prom_free(base, len); base += len; size -= len; } } #endif /* C_OBP */ /* * Implementation of the "enter_mon" boot service. */ void bop_enter_mon(void) { prom_enter_mon(); } /* * free elf info allocated by booter */ void bop_free_elf(void) { uint32_t eadr; uint32_t esize; extern Addr dynseg; extern size_t dynsize; if (bop_getprop("elfheader-address", (caddr_t)&eadr) == -1 || bop_getprop("elfheader-length", (caddr_t)&esize) == -1) prom_panic("missing elfheader"); prom_free((caddr_t)(uintptr_t)eadr, roundup(esize, PAGESIZE)); prom_free((caddr_t)(uintptr_t)dynseg, roundup(dynsize, PAGESIZE)); } /* Simple message to indicate that the bootops pointer has been zeroed */ #ifdef DEBUG int bootops_gone_on = 0; #define BOOTOPS_GONE() \ if (bootops_gone_on) \ prom_printf("The bootops vec is zeroed now!\n"); #else #define BOOTOPS_GONE() #endif /* DEBUG */ void bop_fini(void) { bop_free_archive(); (void) bop_unmountroot(); bop_free_elf(); bop_temp_freeall(); bootops = (struct bootops *)NULL; BOOTOPS_GONE(); }