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[/] [or1k/] [trunk/] [linux/] [linux-2.4/] [arch/] [ppc64/] [kernel/] [prom.c] - Rev 1765
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/* - undefined for user space * * * Procedures for interfacing to Open Firmware. * * Paul Mackerras August 1996. * Copyright (C) 1996 Paul Mackerras. * * Adapted for 64bit PowerPC by Dave Engebretsen and Peter Bergner. * {engebret|bergner}@us.ibm.com * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version * 2 of the License, or (at your option) any later version. */ #if 0 #define DEBUG_YABOOT #endif #if 0 #define DEBUG_PROM #endif #include <stdarg.h> #include <linux/config.h> #include <linux/kernel.h> #include <linux/string.h> #include <linux/init.h> #include <linux/version.h> #include <linux/threads.h> #include <linux/spinlock.h> #include <linux/blk.h> #ifdef DEBUG_YABOOT #define call_yaboot(FUNC,...) \ do { \ if (FUNC) { \ struct prom_t *_prom = PTRRELOC(&prom); \ unsigned long prom_entry = _prom->entry;\ _prom->entry = (unsigned long)(FUNC); \ enter_prom(__VA_ARGS__); \ _prom->entry = prom_entry; \ } \ } while (0) #else #define call_yaboot(FUNC,...) do { ; } while (0) #endif #include <asm/init.h> #include <linux/types.h> #include <linux/pci.h> #include <asm/prom.h> #include <asm/rtas.h> #include <asm/lmb.h> #include <asm/abs_addr.h> #include <asm/page.h> #include <asm/processor.h> #include <asm/irq.h> #include <asm/io.h> #include <asm/smp.h> #include <asm/system.h> #include <asm/mmu.h> #include <asm/pgtable.h> #include <asm/bitops.h> #include <asm/naca.h> #include <asm/pci.h> #include "open_pic.h" #include <asm/bootinfo.h> #include <asm/ppcdebug.h> #ifdef CONFIG_FB #include <asm/linux_logo.h> #endif extern char _end[]; /* * prom_init() is called very early on, before the kernel text * and data have been mapped to KERNELBASE. At this point the code * is running at whatever address it has been loaded at, so * references to extern and static variables must be relocated * explicitly. The procedure reloc_offset() returns the address * we're currently running at minus the address we were linked at. * (Note that strings count as static variables.) * * Because OF may have mapped I/O devices into the area starting at * KERNELBASE, particularly on CHRP machines, we can't safely call * OF once the kernel has been mapped to KERNELBASE. Therefore all * OF calls should be done within prom_init(), and prom_init() * and all routines called within it must be careful to relocate * references as necessary. * * Note that the bss is cleared *after* prom_init runs, so we have * to make sure that any static or extern variables it accesses * are put in the data segment. */ #define PROM_BUG() do { \ prom_print(RELOC("kernel BUG at ")); \ prom_print(RELOC(__FILE__)); \ prom_print(RELOC(":")); \ prom_print_hex(__LINE__); \ prom_print(RELOC("!\n")); \ __asm__ __volatile__(".long " BUG_ILLEGAL_INSTR); \ } while (0) struct pci_reg_property { struct pci_address addr; u32 size_hi; u32 size_lo; }; struct isa_reg_property { u32 space; u32 address; u32 size; }; struct pci_intr_map { struct pci_address addr; u32 dunno; phandle int_ctrler; u32 intr; }; typedef unsigned long interpret_func(struct device_node *, unsigned long, int, int); #if 0 static interpret_func interpret_pci_props; #endif static unsigned long interpret_pci_props(struct device_node *, unsigned long, int, int); static interpret_func interpret_isa_props; static interpret_func interpret_root_props; #ifndef FB_MAX /* avoid pulling in all of the fb stuff */ #define FB_MAX 8 #endif struct prom_t prom = { 0, /* entry */ 0, /* chosen */ 0, /* cpu */ 0, /* stdout */ 0, /* disp_node */ {0,0,0,{0},NULL}, /* args */ 0, /* version */ 32, /* encode_phys_size */ 0 /* bi_rec pointer */ #ifdef DEBUG_YABOOT ,NULL /* yaboot */ #endif }; char *prom_display_paths[FB_MAX] __initdata = { 0, }; unsigned int prom_num_displays = 0; char *of_stdout_device = 0; extern struct rtas_t rtas; extern unsigned long klimit; extern struct lmb lmb; #ifdef CONFIG_MSCHUNKS extern struct msChunks msChunks; #endif /* CONFIG_MSCHUNKS */ #define MAX_PHB 16 * 3 // 16 Towers * 3 PHBs/tower struct _of_tce_table of_tce_table[MAX_PHB + 1] = {{0, 0, 0}}; char *bootpath = 0; char *bootdevice = 0; #define MAX_CPU_THREADS 2 struct device_node *allnodes = 0; static unsigned long call_prom(const char *service, int nargs, int nret, ...); static void prom_exit(void); static unsigned long copy_device_tree(unsigned long); static unsigned long inspect_node(phandle, struct device_node *, unsigned long, unsigned long, struct device_node ***); static unsigned long finish_node(struct device_node *, unsigned long, interpret_func *, int, int); static unsigned long finish_node_interrupts(struct device_node *, unsigned long); static unsigned long check_display(unsigned long); static int prom_next_node(phandle *); static struct bi_record * prom_bi_rec_verify(struct bi_record *); static unsigned long prom_bi_rec_reserve(unsigned long); static struct device_node *find_phandle(phandle); #ifdef CONFIG_MSCHUNKS static unsigned long prom_initialize_mschunks(unsigned long); #ifdef DEBUG_PROM void prom_dump_mschunks_mapping(void); #endif /* DEBUG_PROM */ #endif /* CONFIG_MSCHUNKS */ #ifdef DEBUG_PROM void prom_dump_lmb(void); #endif extern unsigned long reloc_offset(void); extern void enter_prom(void *dummy,...); void cacheable_memzero(void *, unsigned int); #ifndef CONFIG_CMDLINE #define CONFIG_CMDLINE "" #endif char cmd_line[512] = CONFIG_CMDLINE; unsigned long dev_tree_size; #ifdef CONFIG_HMT struct { unsigned int pir; unsigned int threadid; } hmt_thread_data[NR_CPUS] = {0}; #endif /* CONFIG_HMT */ char testString[] = "LINUX\n"; /* This is the one and *ONLY* place where we actually call open * firmware from, since we need to make sure we're running in 32b * mode when we do. We switch back to 64b mode upon return. */ static unsigned long __init call_prom(const char *service, int nargs, int nret, ...) { int i; unsigned long offset = reloc_offset(); struct prom_t *_prom = PTRRELOC(&prom); va_list list; _prom->args.service = (u32)LONG_LSW(service); _prom->args.nargs = nargs; _prom->args.nret = nret; _prom->args.rets = (prom_arg_t *)&(_prom->args.args[nargs]); va_start(list, nret); for (i=0; i < nargs ;i++) _prom->args.args[i] = (prom_arg_t)LONG_LSW(va_arg(list, unsigned long)); va_end(list); for (i=0; i < nret ;i++) _prom->args.rets[i] = 0; enter_prom(&_prom->args); return (unsigned long)((nret > 0) ? _prom->args.rets[0] : 0); } static void __init prom_exit() { unsigned long offset = reloc_offset(); call_prom(RELOC("exit"), 0, 0); for (;;) /* should never get here */ ; } void __init prom_enter(void) { unsigned long offset = reloc_offset(); call_prom(RELOC("enter"), 0, 0); } void __init prom_print(const char *msg) { const char *p, *q; unsigned long offset = reloc_offset(); struct prom_t *_prom = PTRRELOC(&prom); if (_prom->stdout == 0) return; for (p = msg; *p != 0; p = q) { for (q = p; *q != 0 && *q != '\n'; ++q) ; if (q > p) call_prom(RELOC("write"), 3, 1, _prom->stdout, p, q - p); if (*q != 0) { ++q; call_prom(RELOC("write"), 3, 1, _prom->stdout, RELOC("\r\n"), 2); } } } void prom_print_hex(unsigned long val) { int i, nibbles = sizeof(val)*2; char buf[sizeof(val)*2+1]; for (i = nibbles-1; i >= 0; i--) { buf[i] = (val & 0xf) + '0'; if (buf[i] > '9') buf[i] += ('a'-'0'-10); val >>= 4; } buf[nibbles] = '\0'; prom_print(buf); } void prom_print_nl(void) { unsigned long offset = reloc_offset(); prom_print(RELOC("\n")); } static unsigned long prom_initialize_naca(unsigned long mem) { phandle node; char type[64]; unsigned long num_cpus = 0; unsigned long offset = reloc_offset(); struct prom_t *_prom = PTRRELOC(&prom); struct naca_struct *_naca = RELOC(naca); struct systemcfg *_systemcfg = RELOC(systemcfg); /* NOTE: _naca->debug_switch is already initialized. */ #ifdef DEBUG_PROM prom_print(RELOC("prom_initialize_naca: start...\n")); #endif _naca->pftSize = 0; /* ilog2 of htab size. computed below. */ for (node = 0; prom_next_node(&node); ) { type[0] = 0; call_prom(RELOC("getprop"), 4, 1, node, RELOC("device_type"), type, sizeof(type)); if (!strcmp(type, RELOC("cpu"))) { num_cpus += 1; /* We're assuming *all* of the CPUs have the same * d-cache and i-cache sizes... -Peter */ if ( num_cpus == 1 ) { u32 size, lsize, sets; call_prom(RELOC("getprop"), 4, 1, node, RELOC("d-cache-size"), &size, sizeof(size)); call_prom(RELOC("getprop"), 4, 1, node, RELOC("d-cache-line-size"), &lsize, sizeof(lsize)); _systemcfg->dCacheL1Size = size; _systemcfg->dCacheL1LineSize = lsize; _naca->dCacheL1LogLineSize = __ilog2(lsize); _naca->dCacheL1LinesPerPage = PAGE_SIZE/lsize; call_prom(RELOC("getprop"), 4, 1, node, RELOC("i-cache-size"), &size, sizeof(size)); call_prom(RELOC("getprop"), 4, 1, node, RELOC("i-cache-line-size"), &lsize, sizeof(lsize)); _systemcfg->iCacheL1Size = size; _systemcfg->iCacheL1LineSize = lsize; _naca->iCacheL1LogLineSize = __ilog2(lsize); _naca->iCacheL1LinesPerPage = PAGE_SIZE/lsize; if (_systemcfg->platform == PLATFORM_PSERIES_LPAR) { u32 pft_size[2]; call_prom(RELOC("getprop"), 4, 1, node, RELOC("ibm,pft-size"), &pft_size, sizeof(pft_size)); /* pft_size[0] is the NUMA CEC cookie */ _naca->pftSize = pft_size[1]; } } } else if (!strcmp(type, RELOC("serial"))) { phandle isa, pci; struct isa_reg_property reg; union pci_range ranges; type[0] = 0; call_prom(RELOC("getprop"), 4, 1, node, RELOC("ibm,aix-loc"), type, sizeof(type)); if (strcmp(type, RELOC("S1"))) continue; call_prom(RELOC("getprop"), 4, 1, node, RELOC("reg"), ®, sizeof(reg)); isa = call_prom(RELOC("parent"), 1, 1, node); if (!isa) PROM_BUG(); pci = call_prom(RELOC("parent"), 1, 1, isa); if (!pci) PROM_BUG(); call_prom(RELOC("getprop"), 4, 1, pci, RELOC("ranges"), &ranges, sizeof(ranges)); if ( _prom->encode_phys_size == 32 ) _naca->serialPortAddr = ranges.pci32.phys+reg.address; else { _naca->serialPortAddr = ((((unsigned long)ranges.pci64.phys_hi) << 32) | (ranges.pci64.phys_lo)) + reg.address; } } } _naca->interrupt_controller = IC_INVALID; for (node = 0; prom_next_node(&node); ) { type[0] = 0; call_prom(RELOC("getprop"), 4, 1, node, RELOC("name"), type, sizeof(type)); if (strcmp(type, RELOC("interrupt-controller"))) { continue; } call_prom(RELOC("getprop"), 4, 1, node, RELOC("compatible"), type, sizeof(type)); if (strstr(type, RELOC("open-pic"))) { _naca->interrupt_controller = IC_OPEN_PIC; } else if (strstr(type, RELOC("ppc-xicp"))) { _naca->interrupt_controller = IC_PPC_XIC; } else { prom_print(RELOC("prom: failed to recognize interrupt-controller\n")); } break; } if (_naca->interrupt_controller == IC_INVALID) { prom_print(RELOC("prom: failed to find interrupt-controller\n")); PROM_BUG(); } /* We gotta have at least 1 cpu... */ if ( (_systemcfg->processorCount = num_cpus) < 1 ) PROM_BUG(); _systemcfg->physicalMemorySize = lmb_phys_mem_size(); if (_systemcfg->platform == PLATFORM_PSERIES) { unsigned long rnd_mem_size, pteg_count; /* round mem_size up to next power of 2 */ rnd_mem_size = 1UL << __ilog2(_systemcfg->physicalMemorySize); if (rnd_mem_size < _systemcfg->physicalMemorySize) rnd_mem_size <<= 1; /* # pages / 2 */ pteg_count = (rnd_mem_size >> (12 + 1)); _naca->pftSize = __ilog2(pteg_count << 7); } if (_naca->pftSize == 0) { prom_print(RELOC("prom: failed to compute pftSize!\n")); PROM_BUG(); } /* * Hardcode to GP size. I am not sure where to get this info * in general, as there does not appear to be a slb-size OF * entry. At least in Condor and earlier. DRENG */ _naca->slb_size = 64; /* Add an eye catcher and the systemcfg layout version number */ strcpy(_systemcfg->eye_catcher, RELOC("SYSTEMCFG:PPC64")); _systemcfg->version.major = SYSTEMCFG_MAJOR; _systemcfg->version.minor = SYSTEMCFG_MINOR; _systemcfg->processor = _get_PVR(); #ifdef DEBUG_PROM prom_print(RELOC("systemcfg->processorCount = 0x")); prom_print_hex(_systemcfg->processorCount); prom_print_nl(); prom_print(RELOC("systemcfg->physicalMemorySize = 0x")); prom_print_hex(_systemcfg->physicalMemorySize); prom_print_nl(); prom_print(RELOC("naca->pftSize = 0x")); prom_print_hex(_naca->pftSize); prom_print_nl(); prom_print(RELOC("systemcfg->dCacheL1LineSize = 0x")); prom_print_hex(_systemcfg->dCacheL1LineSize); prom_print_nl(); prom_print(RELOC("systemcfg->iCacheL1LineSize = 0x")); prom_print_hex(_systemcfg->iCacheL1LineSize); prom_print_nl(); prom_print(RELOC("naca->serialPortAddr = 0x")); prom_print_hex(_naca->serialPortAddr); prom_print_nl(); prom_print(RELOC("naca->interrupt_controller = 0x")); prom_print_hex(_naca->interrupt_controller); prom_print_nl(); prom_print(RELOC("systemcfg->platform = 0x")); prom_print_hex(_systemcfg->platform); prom_print_nl(); prom_print(RELOC("prom_initialize_naca: end...\n")); #endif return mem; } static unsigned long __init prom_initialize_lmb(unsigned long mem) { phandle node; char type[64]; unsigned long i, offset = reloc_offset(); struct prom_t *_prom = PTRRELOC(&prom); union lmb_reg_property reg; unsigned long lmb_base, lmb_size; unsigned long num_regs, bytes_per_reg = (_prom->encode_phys_size*2)/8; #ifdef CONFIG_MSCHUNKS unsigned long max_addr = 0; #if 1 /* Fix me: 630 3G-4G IO hack here... -Peter (PPPBBB) */ unsigned long io_base = 3UL<<30; unsigned long io_size = 1UL<<30; unsigned long have_630 = 1; /* assume we have a 630 */ #else unsigned long io_base = <real io base here>; unsigned long io_size = <real io size here>; #endif #endif /* CONFIG_MSCHUNKS */ lmb_init(); for (node = 0; prom_next_node(&node); ) { type[0] = 0; call_prom(RELOC("getprop"), 4, 1, node, RELOC("device_type"), type, sizeof(type)); if (strcmp(type, RELOC("memory"))) continue; num_regs = call_prom(RELOC("getprop"), 4, 1, node, RELOC("reg"), ®, sizeof(reg)) / bytes_per_reg; for (i=0; i < num_regs ;i++) { if (_prom->encode_phys_size == 32) { lmb_base = reg.addr32[i].address; lmb_size = reg.addr32[i].size; } else { lmb_base = reg.addr64[i].address; lmb_size = reg.addr64[i].size; } #ifdef CONFIG_MSCHUNKS if ( lmb_addrs_overlap(lmb_base,lmb_size, io_base,io_size) ) { /* If we really have dram here, then we don't * have a 630! -Peter */ have_630 = 0; } #endif /* CONFIG_MSCHUNKS */ if ( lmb_add(lmb_base, lmb_size) < 0 ) prom_print(RELOC("Too many LMB's, discarding this one...\n")); #ifdef CONFIG_MSCHUNKS else if ( max_addr < (lmb_base+lmb_size-1) ) max_addr = lmb_base+lmb_size-1; #endif /* CONFIG_MSCHUNKS */ } } #ifdef CONFIG_MSCHUNKS if ( have_630 && lmb_addrs_overlap(0,max_addr,io_base,io_size) ) lmb_add_io(io_base, io_size); #endif /* CONFIG_MSCHUNKS */ lmb_analyze(); #ifdef DEBUG_PROM prom_dump_lmb(); #endif /* DEBUG_PROM */ #ifdef CONFIG_MSCHUNKS mem = prom_initialize_mschunks(mem); #ifdef DEBUG_PROM prom_dump_mschunks_mapping(); #endif /* DEBUG_PROM */ #endif /* CONFIG_MSCHUNKS */ return mem; } static void __init prom_instantiate_rtas(void) { unsigned long offset = reloc_offset(); struct prom_t *_prom = PTRRELOC(&prom); struct rtas_t *_rtas = PTRRELOC(&rtas); struct naca_struct *_naca = RELOC(naca); struct systemcfg *_systemcfg = RELOC(systemcfg); ihandle prom_rtas; u32 getprop_rval; #ifdef DEBUG_PROM prom_print(RELOC("prom_instantiate_rtas: start...\n")); #endif prom_rtas = (ihandle)call_prom(RELOC("finddevice"), 1, 1, RELOC("/rtas")); if (prom_rtas != (ihandle) -1) { char hypertas_funcs[1024]; int rc; if ((rc = call_prom(RELOC("getprop"), 4, 1, prom_rtas, RELOC("ibm,hypertas-functions"), hypertas_funcs, sizeof(hypertas_funcs))) > 0) { _systemcfg->platform = PLATFORM_PSERIES_LPAR; } call_prom(RELOC("getprop"), 4, 1, prom_rtas, RELOC("rtas-size"), &getprop_rval, sizeof(getprop_rval)); _rtas->size = getprop_rval; prom_print(RELOC("instantiating rtas")); if (_rtas->size != 0) { unsigned long rtas_region = RTAS_INSTANTIATE_MAX; /* Grab some space within the first RTAS_INSTANTIATE_MAX bytes * of physical memory (or within the RMO region) because RTAS * runs in 32-bit mode and relocate off. */ if ( _systemcfg->platform == PLATFORM_PSERIES_LPAR ) { struct lmb *_lmb = PTRRELOC(&lmb); rtas_region = min(_lmb->rmo_size, RTAS_INSTANTIATE_MAX); } _rtas->base = lmb_alloc_base(_rtas->size, PAGE_SIZE, rtas_region); prom_print(RELOC(" at 0x")); prom_print_hex(_rtas->base); prom_rtas = (ihandle)call_prom(RELOC("open"), 1, 1, RELOC("/rtas")); prom_print(RELOC("...")); if ((long)call_prom(RELOC("call-method"), 3, 2, RELOC("instantiate-rtas"), prom_rtas, _rtas->base) >= 0) { _rtas->entry = (long)_prom->args.rets[1]; } } if (_rtas->entry <= 0) { prom_print(RELOC(" failed\n")); } else { prom_print(RELOC(" done\n")); } #ifdef DEBUG_PROM prom_print(RELOC("rtas->base = 0x")); prom_print_hex(_rtas->base); prom_print_nl(); prom_print(RELOC("rtas->entry = 0x")); prom_print_hex(_rtas->entry); prom_print_nl(); prom_print(RELOC("rtas->size = 0x")); prom_print_hex(_rtas->size); prom_print_nl(); #endif } #ifdef DEBUG_PROM prom_print(RELOC("prom_instantiate_rtas: end...\n")); #endif } unsigned long prom_strtoul(const char *cp) { unsigned long result = 0,value; while (*cp) { value = *cp-'0'; result = result*10 + value; cp++; } return result; } #ifdef CONFIG_MSCHUNKS static unsigned long prom_initialize_mschunks(unsigned long mem) { unsigned long offset = reloc_offset(); struct lmb *_lmb = PTRRELOC(&lmb); struct msChunks *_msChunks = PTRRELOC(&msChunks); unsigned long i, pchunk = 0; unsigned long addr_range = _lmb->memory.size + _lmb->memory.iosize; unsigned long chunk_size = _lmb->memory.lcd_size; mem = msChunks_alloc(mem, addr_range / chunk_size, chunk_size); /* First create phys -> abs mapping for memory/dram */ for (i=0; i < _lmb->memory.cnt ;i++) { unsigned long base = _lmb->memory.region[i].base; unsigned long size = _lmb->memory.region[i].size; unsigned long achunk = addr_to_chunk(base); unsigned long end_achunk = addr_to_chunk(base+size); if(_lmb->memory.region[i].type != LMB_MEMORY_AREA) continue; _lmb->memory.region[i].physbase = chunk_to_addr(pchunk); for (; achunk < end_achunk ;) { PTRRELOC(_msChunks->abs)[pchunk++] = achunk++; } } #ifdef CONFIG_MSCHUNKS /* Now create phys -> abs mapping for IO */ for (i=0; i < _lmb->memory.cnt ;i++) { unsigned long base = _lmb->memory.region[i].base; unsigned long size = _lmb->memory.region[i].size; unsigned long achunk = addr_to_chunk(base); unsigned long end_achunk = addr_to_chunk(base+size); if(_lmb->memory.region[i].type != LMB_IO_AREA) continue; _lmb->memory.region[i].physbase = chunk_to_addr(pchunk); for (; achunk < end_achunk ;) { PTRRELOC(_msChunks->abs)[pchunk++] = achunk++; } } #endif /* CONFIG_MSCHUNKS */ return mem; } #ifdef DEBUG_PROM void prom_dump_mschunks_mapping(void) { unsigned long offset = reloc_offset(); struct msChunks *_msChunks = PTRRELOC(&msChunks); unsigned long chunk; prom_print(RELOC("\nprom_dump_mschunks_mapping:\n")); prom_print(RELOC(" msChunks.num_chunks = 0x")); prom_print_hex(_msChunks->num_chunks); prom_print_nl(); prom_print(RELOC(" msChunks.chunk_size = 0x")); prom_print_hex(_msChunks->chunk_size); prom_print_nl(); prom_print(RELOC(" msChunks.chunk_shift = 0x")); prom_print_hex(_msChunks->chunk_shift); prom_print_nl(); prom_print(RELOC(" msChunks.chunk_mask = 0x")); prom_print_hex(_msChunks->chunk_mask); prom_print_nl(); prom_print(RELOC(" msChunks.abs = 0x")); prom_print_hex(_msChunks->abs); prom_print_nl(); prom_print(RELOC(" msChunks mapping:\n")); for(chunk=0; chunk < _msChunks->num_chunks ;chunk++) { prom_print(RELOC(" phys 0x")); prom_print_hex(chunk); prom_print(RELOC(" -> abs 0x")); prom_print_hex(PTRRELOC(_msChunks->abs)[chunk]); prom_print_nl(); } } #endif /* DEBUG_PROM */ #endif /* CONFIG_MSCHUNKS */ #ifdef DEBUG_PROM void prom_dump_lmb(void) { unsigned long i; unsigned long offset = reloc_offset(); struct lmb *_lmb = PTRRELOC(&lmb); prom_print(RELOC("\nprom_dump_lmb:\n")); prom_print(RELOC(" memory.cnt = 0x")); prom_print_hex(_lmb->memory.cnt); prom_print_nl(); prom_print(RELOC(" memory.size = 0x")); prom_print_hex(_lmb->memory.size); prom_print_nl(); prom_print(RELOC(" memory.lcd_size = 0x")); prom_print_hex(_lmb->memory.lcd_size); prom_print_nl(); for (i=0; i < _lmb->memory.cnt ;i++) { prom_print(RELOC(" memory.region[0x")); prom_print_hex(i); prom_print(RELOC("].base = 0x")); prom_print_hex(_lmb->memory.region[i].base); prom_print_nl(); prom_print(RELOC(" .physbase = 0x")); prom_print_hex(_lmb->memory.region[i].physbase); prom_print_nl(); prom_print(RELOC(" .size = 0x")); prom_print_hex(_lmb->memory.region[i].size); prom_print_nl(); prom_print(RELOC(" .type = 0x")); prom_print_hex(_lmb->memory.region[i].type); prom_print_nl(); } prom_print_nl(); prom_print(RELOC(" reserved.cnt = 0x")); prom_print_hex(_lmb->reserved.cnt); prom_print_nl(); prom_print(RELOC(" reserved.size = 0x")); prom_print_hex(_lmb->reserved.size); prom_print_nl(); prom_print(RELOC(" reserved.lcd_size = 0x")); prom_print_hex(_lmb->reserved.lcd_size); prom_print_nl(); for (i=0; i < _lmb->reserved.cnt ;i++) { prom_print(RELOC(" reserved.region[0x")); prom_print_hex(i); prom_print(RELOC("].base = 0x")); prom_print_hex(_lmb->reserved.region[i].base); prom_print_nl(); prom_print(RELOC(" .physbase = 0x")); prom_print_hex(_lmb->reserved.region[i].physbase); prom_print_nl(); prom_print(RELOC(" .size = 0x")); prom_print_hex(_lmb->reserved.region[i].size); prom_print_nl(); prom_print(RELOC(" .type = 0x")); prom_print_hex(_lmb->reserved.region[i].type); prom_print_nl(); } } #endif /* DEBUG_PROM */ void prom_initialize_tce_table(void) { phandle node; ihandle phb_node; unsigned long offset = reloc_offset(); char compatible[64], path[64], type[64], model[64]; unsigned long i, table = 0; unsigned long base, vbase, align; unsigned int minalign, minsize; struct _of_tce_table *prom_tce_table = RELOC(of_tce_table); unsigned long tce_entry, *tce_entryp; #ifdef DEBUG_PROM prom_print(RELOC("starting prom_initialize_tce_table\n")); #endif /* Search all nodes looking for PHBs. */ for (node = 0; prom_next_node(&node); ) { compatible[0] = 0; type[0] = 0; model[0] = 0; call_prom(RELOC("getprop"), 4, 1, node, RELOC("compatible"), compatible, sizeof(compatible)); call_prom(RELOC("getprop"), 4, 1, node, RELOC("device_type"), type, sizeof(type)); call_prom(RELOC("getprop"), 4, 1, node, RELOC("model"), model, sizeof(model)); /* Keep the old logic in tack to avoid regression. */ if (compatible[0] != 0) { if((strstr(compatible, RELOC("python")) == NULL) && (strstr(compatible, RELOC("Speedwagon")) == NULL) && (strstr(compatible, RELOC("Winnipeg")) == NULL)) continue; } else if (model[0] != 0) { if ((strstr(model, RELOC("ython")) == NULL) && (strstr(model, RELOC("peedwagon")) == NULL) && (strstr(model, RELOC("innipeg")) == NULL)) continue; } if ((type[0] == 0) || (strstr(type, RELOC("pci")) == NULL)) { continue; } if (call_prom(RELOC("getprop"), 4, 1, node, RELOC("tce-table-minalign"), &minalign, sizeof(minalign)) < 0) { minalign = 0; } if (call_prom(RELOC("getprop"), 4, 1, node, RELOC("tce-table-minsize"), &minsize, sizeof(minsize)) < 0) { minsize = 4UL << 20; } /* Even though we read what OF wants, we just set the table * size to 4 MB. This is enough to map 2GB of PCI DMA space. * By doing this, we avoid the pitfalls of trying to DMA to * MMIO space and the DMA alias hole. */ minsize = 8UL << 20; /* Align to the greater of the align or size */ align = (minalign < minsize) ? minsize : minalign; /* Carve out storage for the TCE table. */ base = lmb_alloc(minsize, align); if ( !base ) { prom_print(RELOC("ERROR, cannot find space for TCE table.\n")); prom_exit(); } vbase = absolute_to_virt(base); /* Save away the TCE table attributes for later use. */ prom_tce_table[table].node = node; prom_tce_table[table].base = vbase; prom_tce_table[table].size = minsize; #ifdef DEBUG_PROM prom_print(RELOC("TCE table: 0x")); prom_print_hex(table); prom_print_nl(); prom_print(RELOC("\tnode = 0x")); prom_print_hex(node); prom_print_nl(); prom_print(RELOC("\tbase = 0x")); prom_print_hex(vbase); prom_print_nl(); prom_print(RELOC("\tsize = 0x")); prom_print_hex(minsize); prom_print_nl(); #endif /* Initialize the table to have a one-to-one mapping * over the allocated size. */ tce_entryp = (unsigned long *)base; for (i = 0; i < (minsize >> 3) ;tce_entryp++, i++) { tce_entry = (i << PAGE_SHIFT); tce_entry |= 0x3; *tce_entryp = tce_entry; } /* Call OF to setup the TCE hardware */ if (call_prom(RELOC("package-to-path"), 3, 1, node, path, 255) <= 0) { prom_print(RELOC("package-to-path failed\n")); } else { prom_print(RELOC("opened ")); prom_print(path); prom_print_nl(); } phb_node = (ihandle)call_prom(RELOC("open"), 1, 1, path); if ( (long)phb_node <= 0) { prom_print(RELOC("open failed\n")); } else { prom_print(RELOC("open success\n")); } call_prom(RELOC("call-method"), 6, 0, RELOC("set-64-bit-addressing"), phb_node, -1, minsize, base & 0xffffffff, (base >> 32) & 0xffffffff); call_prom(RELOC("close"), 1, 0, phb_node); table++; } /* Flag the first invalid entry */ prom_tce_table[table].node = 0; #ifdef DEBUG_PROM prom_print(RELOC("ending prom_initialize_tce_table\n")); #endif } /* * With CHRP SMP we need to use the OF to start the other * processors so we can't wait until smp_boot_cpus (the OF is * trashed by then) so we have to put the processors into * a holding pattern controlled by the kernel (not OF) before * we destroy the OF. * * This uses a chunk of low memory, puts some holding pattern * code there and sends the other processors off to there until * smp_boot_cpus tells them to do something. The holding pattern * checks that address until its cpu # is there, when it is that * cpu jumps to __secondary_start(). smp_boot_cpus() takes care * of setting those values. * * We also use physical address 0x4 here to tell when a cpu * is in its holding pattern code. * * Fixup comment... DRENG / PPPBBB - Peter * * -- Cort */ static void prom_hold_cpus(unsigned long mem) { unsigned long i; unsigned int reg; phandle node; unsigned long offset = reloc_offset(); char type[64], *path; int cpuid = 0; unsigned int interrupt_server[MAX_CPU_THREADS]; unsigned int cpu_threads, hw_cpu_num; int propsize; extern void __secondary_hold(void); extern unsigned long __secondary_hold_spinloop; extern unsigned long __secondary_hold_acknowledge; unsigned long *spinloop = __v2a(&__secondary_hold_spinloop); unsigned long *acknowledge = __v2a(&__secondary_hold_acknowledge); unsigned long secondary_hold = (unsigned long)__v2a(*PTRRELOC((unsigned long *)__secondary_hold)); struct naca_struct *_naca = RELOC(naca); struct systemcfg *_systemcfg = RELOC(systemcfg); struct paca_struct *_xPaca = PTRRELOC(&paca[0]); struct prom_t *_prom = PTRRELOC(&prom); /* Initially, we must have one active CPU. */ _systemcfg->processorCount = 1; #ifdef DEBUG_PROM prom_print(RELOC("prom_hold_cpus: start...\n")); prom_print(RELOC(" 1) spinloop = 0x")); prom_print_hex(spinloop); prom_print_nl(); prom_print(RELOC(" 1) *spinloop = 0x")); prom_print_hex(*spinloop); prom_print_nl(); prom_print(RELOC(" 1) acknowledge = 0x")); prom_print_hex(acknowledge); prom_print_nl(); prom_print(RELOC(" 1) *acknowledge = 0x")); prom_print_hex(*acknowledge); prom_print_nl(); prom_print(RELOC(" 1) secondary_hold = 0x")); prom_print_hex(secondary_hold); prom_print_nl(); #endif /* Set the common spinloop variable, so all of the secondary cpus * will block when they are awakened from their OF spinloop. * This must occur for both SMP and non SMP kernels, since OF will * be trashed when we move the kernel. */ *spinloop = 0; #ifdef CONFIG_HMT for (i=0; i < NR_CPUS; i++) { RELOC(hmt_thread_data)[i].pir = 0xdeadbeef; } #endif /* look for cpus */ for (node = 0; prom_next_node(&node); ) { type[0] = 0; call_prom(RELOC("getprop"), 4, 1, node, RELOC("device_type"), type, sizeof(type)); if (strcmp(type, RELOC("cpu")) != 0) continue; /* Skip non-configured cpus. */ call_prom(RELOC("getprop"), 4, 1, node, RELOC("status"), type, sizeof(type)); if (strcmp(type, RELOC("okay")) != 0) continue; reg = -1; call_prom(RELOC("getprop"), 4, 1, node, RELOC("reg"), ®, sizeof(reg)); path = (char *) mem; memset(path, 0, 256); if ((long) call_prom(RELOC("package-to-path"), 3, 1, node, path, 255) < 0) continue; #ifdef DEBUG_PROM prom_print_nl(); prom_print(RELOC("cpuid = 0x")); prom_print_hex(cpuid); prom_print_nl(); prom_print(RELOC("cpu hw idx = 0x")); prom_print_hex(reg); prom_print_nl(); #endif _xPaca[cpuid].xHwProcNum = reg; /* Init the acknowledge var which will be reset by * the secondary cpu when it awakens from its OF * spinloop. */ *acknowledge = (unsigned long)-1; propsize = call_prom(RELOC("getprop"), 4, 1, node, RELOC("ibm,ppc-interrupt-server#s"), &interrupt_server, sizeof(interrupt_server)); if (propsize < 0) { /* no property. old hardware has no SMT */ cpu_threads = 1; interrupt_server[0] = reg; /* fake it with phys id */ } else { /* We have a threaded processor */ cpu_threads = propsize / sizeof(u32); if (cpu_threads > MAX_CPU_THREADS) { prom_print(RELOC("SMT: too many threads!\nSMT: found ")); prom_print_hex(cpu_threads); prom_print(RELOC(", max is ")); prom_print_hex(MAX_CPU_THREADS); prom_print_nl(); cpu_threads = 1; /* ToDo: panic? */ } } hw_cpu_num = interrupt_server[0]; if (hw_cpu_num != _prom->cpu) { /* Primary Thread of non-boot cpu */ prom_print_hex(cpuid); prom_print(RELOC(" : starting cpu ")); prom_print(path); prom_print(RELOC(" ... ")); call_prom(RELOC("start-cpu"), 3, 0, node, secondary_hold, cpuid); for(i = 0; (i < 100000000) && (*acknowledge == ((unsigned long)-1)); i++ ); if (*acknowledge == cpuid) { prom_print(RELOC("ok\n")); /* Set the number of active processors. */ _systemcfg->processorCount++; _xPaca[cpuid].active = 1; _xPaca[cpuid].available = 1; } else { prom_print(RELOC("failed: ")); prom_print_hex(*acknowledge); prom_print_nl(); /* prom_panic(RELOC("cpu failed to start")); */ } } else { prom_print_hex(cpuid); prom_print(RELOC(" : booting cpu ")); prom_print(path); prom_print_nl(); } /* Init paca for secondary threads. They start later. */ for (i=1; i < cpu_threads; i++) { cpuid++; _xPaca[cpuid].xHwProcNum = interrupt_server[i]; prom_print_hex(interrupt_server[i]); prom_print(RELOC(" : preparing thread ... ")); if (_naca->smt_state) { _xPaca[cpuid].available = 1; prom_print(RELOC("available")); } else { prom_print(RELOC("not available")); } prom_print_nl(); } cpuid++; } #ifdef CONFIG_HMT /* Only enable HMT on processors that provide support. */ if (__is_processor(PV_PULSAR) || __is_processor(PV_ICESTAR) || __is_processor(PV_SSTAR)) { prom_print(RELOC(" starting secondary threads\n")); for (i=0; i < _systemcfg->processorCount ;i++) { unsigned long threadid = _systemcfg->processorCount*2-1-i; if (i == 0) { unsigned long pir = _get_PIR(); if (__is_processor(PV_PULSAR)) { RELOC(hmt_thread_data)[i].pir = pir & 0x1f; } else { RELOC(hmt_thread_data)[i].pir = pir & 0x3ff; } } RELOC(hmt_thread_data)[i].threadid = threadid; #ifdef DEBUG_PROM prom_print(RELOC(" cpuid 0x")); prom_print_hex(i); prom_print(RELOC(" maps to threadid 0x")); prom_print_hex(threadid); prom_print_nl(); prom_print(RELOC(" pir 0x")); prom_print_hex(RELOC(hmt_thread_data)[i].pir); prom_print_nl(); #endif _xPaca[threadid].xHwProcNum = _xPaca[i].xHwProcNum+1; } _systemcfg->processorCount *= 2; } else { prom_print(RELOC("Processor is not HMT capable\n")); } #endif #ifdef DEBUG_PROM prom_print(RELOC("prom_hold_cpus: end...\n")); #endif } static void smt_setup(void) { char *p, *q; char my_smt_enabled = SMT_DYNAMIC; unsigned long my_smt_snooze_delay; ihandle prom_options = NULL; char option[9]; unsigned long offset = reloc_offset(); struct naca_struct *_naca = RELOC(naca); char found = 0; if (strstr(RELOC(cmd_line), RELOC("smt-enabled="))) { for (q = RELOC(cmd_line); (p = strstr(q, RELOC("smt-enabled="))) != 0; ) { q = p + 12; if (p > RELOC(cmd_line) && p[-1] != ' ') continue; found = 1; if (q[0] == 'o' && q[1] == 'f' && q[2] == 'f' && (q[3] == ' ' || q[3] == '\0')) { my_smt_enabled = SMT_OFF; } else if (q[0]=='o' && q[1] == 'n' && (q[2] == ' ' || q[2] == '\0')) { my_smt_enabled = SMT_ON; } else { my_smt_enabled = SMT_DYNAMIC; } } } if (!found) { prom_options = (ihandle)call_prom(RELOC("finddevice"), 1, 1, RELOC("/options")); if (prom_options != (ihandle) -1) { call_prom(RELOC("getprop"), 4, 1, prom_options, RELOC("ibm,smt-enabled"), option, sizeof(option)); if (option[0] != 0) { found = 1; if (!strcmp(option, "off")) my_smt_enabled = SMT_OFF; else if (!strcmp(option, "on")) my_smt_enabled = SMT_ON; else my_smt_enabled = SMT_DYNAMIC; } } } if (!found ) my_smt_enabled = SMT_DYNAMIC; /* default to on */ found = 0; if (my_smt_enabled) { if (strstr(RELOC(cmd_line), RELOC("smt-snooze-delay="))) { for (q = RELOC(cmd_line); (p = strstr(q, RELOC("smt-snooze-delay="))) != 0; ) { q = p + 17; if (p > RELOC(cmd_line) && p[-1] != ' ') continue; found = 1; /* Don't use simple_strtoul() because _ctype & others aren't RELOC'd */ my_smt_snooze_delay = 0; while (*q >= '0' && *q <= '9') { my_smt_snooze_delay = my_smt_snooze_delay * 10 + *q - '0'; q++; } } } if (!found) { prom_options = (ihandle)call_prom(RELOC("finddevice"), 1, 1, RELOC("/options")); if (prom_options != (ihandle) -1) { call_prom(RELOC("getprop"), 4, 1, prom_options, RELOC("ibm,smt-snooze-delay"), option, sizeof(option)); if (option[0] != 0) { found = 1; /* Don't use simple_strtoul() because _ctype & others aren't RELOC'd */ my_smt_snooze_delay = 0; q = option; while (*q >= '0' && *q <= '9') { my_smt_snooze_delay = my_smt_snooze_delay * 10 + *q - '0'; q++; } } } } if (!found) { my_smt_snooze_delay = 30000; /* default value */ } } else { my_smt_snooze_delay = 0; /* default value */ } _naca->smt_snooze_delay = my_smt_snooze_delay; _naca->smt_state = my_smt_enabled; } #ifdef CONFIG_PPCDBG extern char *trace_names[]; /* defined in udbg.c -- need a better interface */ void parse_ppcdbg_optionlist(const char *cmd, const char *cmdend) { unsigned long offset = reloc_offset(); char **_trace_names = PTRRELOC(&trace_names[0]); const char *all = RELOC("all"); struct naca_struct *_naca = RELOC(naca); const char *p, *pend; int onoff, i, cmdidx; unsigned long mask; char cmdbuf[30]; for (p = cmd, pend = strchr(p, ','); p < cmdend; pend = strchr(p, ',')) { if (pend == NULL || pend > cmdend) pend = cmdend; onoff = 1; /* default */ if (*p == '+' || *p == '-') { /* explicit on or off */ onoff = (*p == '+'); p++; } /* parse out p..pend here */ if (pend - p < sizeof(cmdbuf)) { strncpy(cmdbuf, p, pend - p); cmdbuf[pend - p] = '\0'; for (cmdidx = -1, i = 0; i < PPCDBG_NUM_FLAGS; i++) { if (_trace_names[i] && (strcmp(PTRRELOC(_trace_names[i]), cmdbuf) == 0)) { cmdidx = i; break; } } mask = 0; if (cmdidx >= 0) { mask = (1 << cmdidx); } else if (strcmp(cmdbuf, all) == 0) { mask = PPCDBG_ALL; } else { prom_print(RELOC("ppcdbg: unknown debug: ")); prom_print(cmdbuf); prom_print_nl(); } if (mask) { if (onoff) _naca->debug_switch |= mask; else _naca->debug_switch &= ~mask; } } p = pend+1; } } /* * Parse ppcdbg= cmdline option. * * Option names are listed in <asm/ppcdebug.h> in the trace_names * table. Multiple names may be listed separated by commas (no whitespace), * and each option may be preceeded by a + or - to force on or off state. * The special option "all" may also be used. They are processed strictly * left to right. Multiple ppcdbg= options are the command line are treated * as a single option list. * * Examples: ppcdbg=phb_init,buswalk * ppcdbg=all,-mm,-tce * * ToDo: add "group" names that map to common combinations of flags. */ void parse_ppcdbg_cmd_line(const char *line) { unsigned long offset = reloc_offset(); const char *ppcdbgopt = RELOC("ppcdbg="); struct naca_struct *_naca = RELOC(naca); const char *cmd, *end; _naca->debug_switch = PPC_DEBUG_DEFAULT; /* | PPCDBG_BUSWALK | PPCDBG_PHBINIT | PPCDBG_MM | PPCDBG_MMINIT | PPCDBG_TCEINIT | PPCDBG_TCE */ cmd = line; while (cmd && (cmd = strstr(cmd, ppcdbgopt)) != NULL) { cmd += 7; /* skip ppcdbg= */ for (end = cmd; *end != '\0' && *end != '\t' && *end != ' '; end++) ; /* scan to whitespace or end */ parse_ppcdbg_optionlist(cmd, end); } } #endif /* CONFIG_PPCDBG */ /* * Do minimal cmd_line parsing for early boot options. */ static void __init prom_parse_cmd_line(char *line) { #ifdef CONFIG_PPCDBG parse_ppcdbg_cmd_line(line); #endif } /* * We enter here early on, when the Open Firmware prom is still * handling exceptions and the MMU hash table for us. */ unsigned long __init prom_init(unsigned long r3, unsigned long r4, unsigned long pp, unsigned long r6, unsigned long r7, yaboot_debug_t *yaboot) { int chrp = 0; unsigned long mem; ihandle prom_mmu, prom_op, prom_root, prom_cpu; phandle cpu_pkg; unsigned long offset = reloc_offset(); long l, sz; char *p, *d; unsigned long phys; u32 getprop_rval; struct systemcfg *_systemcfg = RELOC(systemcfg); struct paca_struct *_xPaca = PTRRELOC(&paca[0]); struct prom_t *_prom = PTRRELOC(&prom); char *_cmd_line = PTRRELOC(&cmd_line[0]); /* Default machine type. */ _systemcfg->platform = PLATFORM_PSERIES; /* Get a handle to the prom entry point before anything else */ _prom->entry = pp; _prom->bi_recs = prom_bi_rec_verify((struct bi_record *)r6); if ( _prom->bi_recs != NULL ) { RELOC(klimit) = PTRUNRELOC((unsigned long)_prom->bi_recs + _prom->bi_recs->data[1]); } #ifdef DEBUG_YABOOT call_yaboot(yaboot->dummy,offset>>32,offset&0xffffffff); call_yaboot(yaboot->printf, RELOC("offset = 0x%08x%08x\n"), LONG_MSW(offset), LONG_LSW(offset)); #endif /* Default */ phys = KERNELBASE - offset; #ifdef DEBUG_YABOOT call_yaboot(yaboot->printf, RELOC("phys = 0x%08x%08x\n"), LONG_MSW(phys), LONG_LSW(phys)); #endif #ifdef DEBUG_YABOOT _prom->yaboot = yaboot; call_yaboot(yaboot->printf, RELOC("pp = 0x%08x%08x\n"), LONG_MSW(pp), LONG_LSW(pp)); call_yaboot(yaboot->printf, RELOC("prom = 0x%08x%08x\n"), LONG_MSW(_prom->entry), LONG_LSW(_prom->entry)); #endif /* First get a handle for the stdout device */ _prom->chosen = (ihandle)call_prom(RELOC("finddevice"), 1, 1, RELOC("/chosen")); #ifdef DEBUG_YABOOT call_yaboot(yaboot->printf, RELOC("prom->chosen = 0x%08x%08x\n"), LONG_MSW(_prom->chosen), LONG_LSW(_prom->chosen)); #endif if ((long)_prom->chosen <= 0) prom_exit(); if ((long)call_prom(RELOC("getprop"), 4, 1, _prom->chosen, RELOC("stdout"), &getprop_rval, sizeof(getprop_rval)) <= 0) prom_exit(); _prom->stdout = (ihandle)(unsigned long)getprop_rval; #ifdef DEBUG_YABOOT if (_prom->stdout == 0) { call_yaboot(yaboot->printf, RELOC("prom->stdout = 0x%08x%08x\n"), LONG_MSW(_prom->stdout), LONG_LSW(_prom->stdout)); } call_yaboot(yaboot->printf, RELOC("prom->stdout = 0x%08x%08x\n"), LONG_MSW(_prom->stdout), LONG_LSW(_prom->stdout)); #endif #ifdef DEBUG_YABOOT call_yaboot(yaboot->printf, RELOC("Location: 0x11\n")); #endif mem = RELOC(klimit) - offset; #ifdef DEBUG_YABOOT call_yaboot(yaboot->printf, RELOC("Location: 0x11b\n")); #endif /* Get the full OF pathname of the stdout device */ p = (char *) mem; memset(p, 0, 256); call_prom(RELOC("instance-to-path"), 3, 1, _prom->stdout, p, 255); RELOC(of_stdout_device) = PTRUNRELOC(p); mem += strlen(p) + 1; getprop_rval = 1; prom_root = (ihandle)call_prom(RELOC("finddevice"), 1, 1, RELOC("/")); if (prom_root != (ihandle)-1) { call_prom(RELOC("getprop"), 4, 1, prom_root, RELOC("#size-cells"), &getprop_rval, sizeof(getprop_rval)); } _prom->encode_phys_size = (getprop_rval==1) ? 32 : 64; /* Fetch the cmd_line */ sz = (long)call_prom(RELOC("getprop"), 4, 1, _prom->chosen, RELOC("bootargs"), _cmd_line, sizeof(cmd_line)-1); if (sz > 0) _cmd_line[sz] = '\0'; if (sz <=1 ) strcpy(_cmd_line,RELOC(CONFIG_CMDLINE)); prom_parse_cmd_line(_cmd_line); #ifdef DEBUG_PROM prom_print(RELOC("DRENG: Detect OF version...\n")); #endif /* Find the OF version */ prom_op = (ihandle)call_prom(RELOC("finddevice"), 1, 1, RELOC("/openprom")); if (prom_op != (ihandle)-1) { char model[64]; sz = (long)call_prom(RELOC("getprop"), 4, 1, prom_op, RELOC("model"), model, 64); if (sz > 0) { char *c; /* hack to skip the ibm chrp firmware # */ if ( strncmp(model,RELOC("IBM"),3) ) { for (c = model; *c; c++) if (*c >= '0' && *c <= '9') { _prom->version = *c - '0'; break; } } else chrp = 1; } } if (_prom->version >= 3) prom_print(RELOC("OF Version 3 detected.\n")); /* Determine which cpu is actually running right _now_ */ if ((long)call_prom(RELOC("getprop"), 4, 1, _prom->chosen, RELOC("cpu"), &getprop_rval, sizeof(getprop_rval)) <= 0) prom_exit(); prom_cpu = (ihandle)(unsigned long)getprop_rval; cpu_pkg = call_prom(RELOC("instance-to-package"), 1, 1, prom_cpu); call_prom(RELOC("getprop"), 4, 1, cpu_pkg, RELOC("reg"), &getprop_rval, sizeof(getprop_rval)); _prom->cpu = (int)(unsigned long)getprop_rval; _xPaca[0].xHwProcNum = _prom->cpu; #ifdef DEBUG_PROM prom_print(RELOC("Booting CPU hw index = 0x")); prom_print_hex(_prom->cpu); prom_print_nl(); #endif /* Get the boot device and translate it to a full OF pathname. */ p = (char *) mem; l = (long) call_prom(RELOC("getprop"), 4, 1, _prom->chosen, RELOC("bootpath"), p, 1<<20); if (l > 0) { p[l] = 0; /* should already be null-terminated */ RELOC(bootpath) = PTRUNRELOC(p); mem += l + 1; d = (char *) mem; *d = 0; call_prom(RELOC("canon"), 3, 1, p, d, 1<<20); RELOC(bootdevice) = PTRUNRELOC(d); mem = DOUBLEWORD_ALIGN(mem + strlen(d) + 1); } mem = prom_initialize_lmb(mem); mem = prom_bi_rec_reserve(mem); mem = check_display(mem); prom_instantiate_rtas(); /* Initialize some system info into the Naca early... */ mem = prom_initialize_naca(mem); smt_setup(); /* If we are on an SMP machine, then we *MUST* do the * following, regardless of whether we have an SMP * kernel or not. */ prom_hold_cpus(mem); #ifdef DEBUG_PROM prom_print(RELOC("copying OF device tree...\n")); #endif mem = copy_device_tree(mem); RELOC(klimit) = mem + offset; lmb_reserve(0, __pa(RELOC(klimit))); if (_systemcfg->platform == PLATFORM_PSERIES) prom_initialize_tce_table(); if ((long) call_prom(RELOC("getprop"), 4, 1, _prom->chosen, RELOC("mmu"), &getprop_rval, sizeof(getprop_rval)) <= 0) { prom_print(RELOC(" no MMU found\n")); prom_exit(); } /* We assume the phys. address size is 3 cells */ prom_mmu = (ihandle)(unsigned long)getprop_rval; if ((long)call_prom(RELOC("call-method"), 4, 4, RELOC("translate"), prom_mmu, (void *)(KERNELBASE - offset), (void *)1) != 0) { prom_print(RELOC(" (translate failed) ")); } else { prom_print(RELOC(" (translate ok) ")); phys = (unsigned long)_prom->args.rets[3]; } /* If OpenFirmware version >= 3, then use quiesce call */ if (_prom->version >= 3) { prom_print(RELOC("Calling quiesce ...\n")); call_prom(RELOC("quiesce"), 0, 0); phys = KERNELBASE - offset; } prom_print(RELOC("returning from prom_init\n")); return phys; } static int prom_set_color(ihandle ih, int i, int r, int g, int b) { unsigned long offset = reloc_offset(); return (int)(long)call_prom(RELOC("call-method"), 6, 1, RELOC("color!"), ih, (void *)(long) i, (void *)(long) b, (void *)(long) g, (void *)(long) r ); } /* * If we have a display that we don't know how to drive, * we will want to try to execute OF's open method for it * later. However, OF will probably fall over if we do that * we've taken over the MMU. * So we check whether we will need to open the display, * and if so, open it now. */ static unsigned long __init check_display(unsigned long mem) { phandle node; ihandle ih; int i; unsigned long offset = reloc_offset(); struct prom_t *_prom = PTRRELOC(&prom); char type[64], *path; static unsigned char default_colors[] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0xaa, 0x00, 0xaa, 0x00, 0x00, 0xaa, 0xaa, 0xaa, 0x00, 0x00, 0xaa, 0x00, 0xaa, 0xaa, 0xaa, 0x00, 0xaa, 0xaa, 0xaa, 0x55, 0x55, 0x55, 0x55, 0x55, 0xff, 0x55, 0xff, 0x55, 0x55, 0xff, 0xff, 0xff, 0x55, 0x55, 0xff, 0x55, 0xff, 0xff, 0xff, 0x55, 0xff, 0xff, 0xff }; _prom->disp_node = 0; for (node = 0; prom_next_node(&node); ) { type[0] = 0; call_prom(RELOC("getprop"), 4, 1, node, RELOC("device_type"), type, sizeof(type)); if (strcmp(type, RELOC("display")) != 0) continue; /* It seems OF doesn't null-terminate the path :-( */ path = (char *) mem; memset(path, 0, 256); if ((long) call_prom(RELOC("package-to-path"), 3, 1, node, path, 255) < 0) continue; prom_print(RELOC("opening display ")); prom_print(path); ih = (ihandle)call_prom(RELOC("open"), 1, 1, path); if (ih == (ihandle)0 || ih == (ihandle)-1) { prom_print(RELOC("... failed\n")); continue; } prom_print(RELOC("... ok\n")); if (_prom->disp_node == 0) _prom->disp_node = (ihandle)(unsigned long)node; /* Setup a useable color table when the appropriate * method is available. Should update this to set-colors */ for (i = 0; i < 32; i++) if (prom_set_color(ih, i, RELOC(default_colors)[i*3], RELOC(default_colors)[i*3+1], RELOC(default_colors)[i*3+2]) != 0) break; #ifdef CONFIG_FB for (i = 0; i < LINUX_LOGO_COLORS; i++) if (prom_set_color(ih, i + 32, RELOC(linux_logo_red)[i], RELOC(linux_logo_green)[i], RELOC(linux_logo_blue)[i]) != 0) break; #endif /* CONFIG_FB */ /* * If this display is the device that OF is using for stdout, * move it to the front of the list. */ mem += strlen(path) + 1; i = RELOC(prom_num_displays)++; if (RELOC(of_stdout_device) != 0 && i > 0 && strcmp(PTRRELOC(RELOC(of_stdout_device)), path) == 0) { for (; i > 0; --i) RELOC(prom_display_paths[i]) = RELOC(prom_display_paths[i-1]); } RELOC(prom_display_paths[i]) = PTRUNRELOC(path); if (RELOC(prom_num_displays) >= FB_MAX) break; } return DOUBLEWORD_ALIGN(mem); } static int __init prom_next_node(phandle *nodep) { phandle node; unsigned long offset = reloc_offset(); if ((node = *nodep) != 0 && (*nodep = call_prom(RELOC("child"), 1, 1, node)) != 0) return 1; if ((*nodep = call_prom(RELOC("peer"), 1, 1, node)) != 0) return 1; for (;;) { if ((node = call_prom(RELOC("parent"), 1, 1, node)) == 0) return 0; if ((*nodep = call_prom(RELOC("peer"), 1, 1, node)) != 0) return 1; } } /* * Make a copy of the device tree from the PROM. */ static unsigned long __init copy_device_tree(unsigned long mem_start) { phandle root; unsigned long new_start; struct device_node **allnextp; unsigned long offset = reloc_offset(); unsigned long mem_end = mem_start + (8<<20); root = call_prom(RELOC("peer"), 1, 1, (phandle)0); if (root == (phandle)0) { prom_print(RELOC("couldn't get device tree root\n")); prom_exit(); } allnextp = &RELOC(allnodes); mem_start = DOUBLEWORD_ALIGN(mem_start); new_start = inspect_node(root, 0, mem_start, mem_end, &allnextp); *allnextp = 0; return new_start; } __init static unsigned long inspect_node(phandle node, struct device_node *dad, unsigned long mem_start, unsigned long mem_end, struct device_node ***allnextpp) { int l; phandle child; struct device_node *np; struct property *pp, **prev_propp; char *prev_name, *namep; unsigned char *valp; unsigned long offset = reloc_offset(); np = (struct device_node *) mem_start; mem_start += sizeof(struct device_node); memset(np, 0, sizeof(*np)); np->node = node; **allnextpp = PTRUNRELOC(np); *allnextpp = &np->allnext; if (dad != 0) { np->parent = PTRUNRELOC(dad); /* we temporarily use the `next' field as `last_child'. */ if (dad->next == 0) dad->child = PTRUNRELOC(np); else dad->next->sibling = PTRUNRELOC(np); dad->next = np; } /* get and store all properties */ prev_propp = &np->properties; prev_name = RELOC(""); for (;;) { pp = (struct property *) mem_start; namep = (char *) (pp + 1); pp->name = PTRUNRELOC(namep); if ((long) call_prom(RELOC("nextprop"), 3, 1, node, prev_name, namep) <= 0) break; mem_start = DOUBLEWORD_ALIGN((unsigned long)namep + strlen(namep) + 1); prev_name = namep; valp = (unsigned char *) mem_start; pp->value = PTRUNRELOC(valp); pp->length = (int)(long) call_prom(RELOC("getprop"), 4, 1, node, namep, valp, mem_end - mem_start); if (pp->length < 0) continue; mem_start = DOUBLEWORD_ALIGN(mem_start + pp->length); *prev_propp = PTRUNRELOC(pp); prev_propp = &pp->next; } /* Add a "linux_phandle" value */ if (np->node != NULL) { u32 ibm_phandle = 0; int len; /* First see if "ibm,phandle" exists and use its value */ len = (int) call_prom(RELOC("getprop"), 4, 1, node, RELOC("ibm,phandle"), &ibm_phandle, sizeof(ibm_phandle)); if (len < 0) { np->linux_phandle = np->node; } else { np->linux_phandle = ibm_phandle; } } *prev_propp = 0; /* get the node's full name */ l = (long) call_prom(RELOC("package-to-path"), 3, 1, node, (char *) mem_start, mem_end - mem_start); if (l >= 0) { np->full_name = PTRUNRELOC((char *) mem_start); *(char *)(mem_start + l) = 0; mem_start = DOUBLEWORD_ALIGN(mem_start + l + 1); } /* do all our children */ child = call_prom(RELOC("child"), 1, 1, node); while (child != (phandle)0) { mem_start = inspect_node(child, np, mem_start, mem_end, allnextpp); child = call_prom(RELOC("peer"), 1, 1, child); } return mem_start; } /* * finish_device_tree is called once things are running normally * (i.e. with text and data mapped to the address they were linked at). * It traverses the device tree and fills in the name, type, * {n_}addrs and {n_}intrs fields of each node. */ void __init finish_device_tree(void) { unsigned long mem = klimit; mem = finish_node(allnodes, mem, NULL, 0, 0); dev_tree_size = mem - (unsigned long) allnodes; mem = _ALIGN(mem, PAGE_SIZE); lmb_reserve(__pa(klimit), mem-klimit); klimit = mem; rtas.dev = find_devices("rtas"); } static unsigned long __init finish_node(struct device_node *np, unsigned long mem_start, interpret_func *ifunc, int naddrc, int nsizec) { struct device_node *child; int *ip; np->name = get_property(np, "name", 0); np->type = get_property(np, "device_type", 0); /* get the device addresses and interrupts */ if (ifunc != NULL) { mem_start = ifunc(np, mem_start, naddrc, nsizec); } mem_start = finish_node_interrupts(np, mem_start); /* Look for #address-cells and #size-cells properties. */ ip = (int *) get_property(np, "#address-cells", 0); if (ip != NULL) naddrc = *ip; ip = (int *) get_property(np, "#size-cells", 0); if (ip != NULL) nsizec = *ip; /* the f50 sets the name to 'display' and 'compatible' to what we * expect for the name -- Cort */ ifunc = NULL; if (!strcmp(np->name, "display")) np->name = get_property(np, "compatible", 0); if (!strcmp(np->name, "device-tree") || np->parent == NULL) ifunc = interpret_root_props; else if (np->type == 0) ifunc = NULL; else if (!strcmp(np->type, "pci") || !strcmp(np->type, "vci")) ifunc = interpret_pci_props; else if (!strcmp(np->type, "isa")) ifunc = interpret_isa_props; for (child = np->child; child != NULL; child = child->sibling) mem_start = finish_node(child, mem_start, ifunc, naddrc, nsizec); return mem_start; } /* This routine walks the interrupt tree for a given device node and gather * all necessary informations according to the draft interrupt mapping * for CHRP. The current version was only tested on Apple "Core99" machines * and may not handle cascaded controllers correctly. */ __init static unsigned long finish_node_interrupts(struct device_node *np, unsigned long mem_start) { /* Finish this node */ unsigned int *isizep, *asizep, *interrupts, *map, *map_mask, *reg; phandle *parent, map_parent; struct device_node *node, *parent_node; int l, isize, ipsize, asize, map_size, regpsize; /* Currently, we don't look at all nodes with no "interrupts" property */ interrupts = (unsigned int *)get_property(np, "interrupts", &l); if (interrupts == NULL) return mem_start; ipsize = l>>2; reg = (unsigned int *)get_property(np, "reg", &l); regpsize = l>>2; /* We assume default interrupt cell size is 1 (bugus ?) */ isize = 1; node = np; do { /* We adjust the cell size if the current parent contains an #interrupt-cells * property */ isizep = (unsigned int *)get_property(node, "#interrupt-cells", &l); if (isizep) isize = *isizep; /* We don't do interrupt cascade (ISA) for now, we stop on the first * controller found */ if (get_property(node, "interrupt-controller", &l)) { int i,j; np->intrs = (struct interrupt_info *) mem_start; np->n_intrs = ipsize / isize; mem_start += np->n_intrs * sizeof(struct interrupt_info); for (i = 0; i < np->n_intrs; ++i) { np->intrs[i].line = irq_offset_up(*interrupts++); np->intrs[i].sense = 1; if (isize > 1) np->intrs[i].sense = *interrupts++; for (j=2; j<isize; j++) interrupts++; } return mem_start; } /* We lookup for an interrupt-map. This code can only handle one interrupt * per device in the map. We also don't handle #address-cells in the parent * I skip the pci node itself here, may not be necessary but I don't like it's * reg property. */ if (np != node) map = (unsigned int *)get_property(node, "interrupt-map", &l); else map = NULL; if (map && l) { int i, found, temp_isize, temp_asize; map_size = l>>2; map_mask = (unsigned int *)get_property(node, "interrupt-map-mask", &l); asizep = (unsigned int *)get_property(node, "#address-cells", &l); if (asizep && l == sizeof(unsigned int)) asize = *asizep; else asize = 0; found = 0; while (map_size>0 && !found) { found = 1; for (i=0; i<asize; i++) { unsigned int mask = map_mask ? map_mask[i] : 0xffffffff; if (!reg || (i>=regpsize) || ((mask & *map) != (mask & reg[i]))) found = 0; map++; map_size--; } for (i=0; i<isize; i++) { unsigned int mask = map_mask ? map_mask[i+asize] : 0xffffffff; if ((mask & *map) != (mask & interrupts[i])) found = 0; map++; map_size--; } map_parent = *((phandle *)map); map+=1; map_size-=1; parent_node = find_phandle(map_parent); temp_isize = isize; temp_asize = 0; if (parent_node) { isizep = (unsigned int *)get_property(parent_node, "#interrupt-cells", &l); if (isizep) temp_isize = *isizep; asizep = (unsigned int *)get_property(parent_node, "#address-cells", &l); if (asizep && l == sizeof(unsigned int)) temp_asize = *asizep; } if (!found) { map += temp_isize + temp_asize; map_size -= temp_isize + temp_asize; } } if (found) { /* Mapped to a new parent. Use the reg and interrupts specified in * the map as the new search parameters. Then search from the parent. */ node = parent_node; reg = map; regpsize = temp_asize; interrupts = map + temp_asize; ipsize = temp_isize; continue; } } /* We look for an explicit interrupt-parent. */ parent = (phandle *)get_property(node, "interrupt-parent", &l); if (parent && (l == sizeof(phandle)) && (parent_node = find_phandle(*parent))) { node = parent_node; continue; } /* Default, get real parent */ node = node->parent; } while (node); return mem_start; } int prom_n_addr_cells(struct device_node* np) { int* ip; do { if (np->parent) np = np->parent; ip = (int *) get_property(np, "#address-cells", 0); if (ip != NULL) return *ip; } while (np->parent); /* No #address-cells property for the root node, default to 1 */ return 1; } int prom_n_size_cells(struct device_node* np) { int* ip; do { if (np->parent) np = np->parent; ip = (int *) get_property(np, "#size-cells", 0); if (ip != NULL) return *ip; } while (np->parent); /* No #size-cells property for the root node, default to 1 */ return 1; } static unsigned long __init interpret_pci_props(struct device_node *np, unsigned long mem_start, int naddrc, int nsizec) { struct address_range *adr; struct pci_reg_property *pci_addrs; int i, l; pci_addrs = (struct pci_reg_property *) get_property(np, "assigned-addresses", &l); if (pci_addrs != 0 && l >= sizeof(struct pci_reg_property)) { i = 0; adr = (struct address_range *) mem_start; while ((l -= sizeof(struct pci_reg_property)) >= 0) { adr[i].space = pci_addrs[i].addr.a_hi; adr[i].address = pci_addrs[i].addr.a_lo; adr[i].size = pci_addrs[i].size_lo; ++i; } np->addrs = adr; np->n_addrs = i; mem_start += i * sizeof(struct address_range); } return mem_start; } static unsigned long __init interpret_isa_props(struct device_node *np, unsigned long mem_start, int naddrc, int nsizec) { struct isa_reg_property *rp; struct address_range *adr; int i, l; rp = (struct isa_reg_property *) get_property(np, "reg", &l); if (rp != 0 && l >= sizeof(struct isa_reg_property)) { i = 0; adr = (struct address_range *) mem_start; while ((l -= sizeof(struct reg_property)) >= 0) { adr[i].space = rp[i].space; adr[i].address = rp[i].address + (adr[i].space? 0: _ISA_MEM_BASE); adr[i].size = rp[i].size; ++i; } np->addrs = adr; np->n_addrs = i; mem_start += i * sizeof(struct address_range); } return mem_start; } static unsigned long __init interpret_root_props(struct device_node *np, unsigned long mem_start, int naddrc, int nsizec) { struct address_range *adr; int i, l; unsigned int *rp; int rpsize = (naddrc + nsizec) * sizeof(unsigned int); rp = (unsigned int *) get_property(np, "reg", &l); if (rp != 0 && l >= rpsize) { i = 0; adr = (struct address_range *) mem_start; while ((l -= rpsize) >= 0) { adr[i].space = 0; adr[i].address = rp[naddrc - 1]; adr[i].size = rp[naddrc + nsizec - 1]; ++i; rp += naddrc + nsizec; } np->addrs = adr; np->n_addrs = i; mem_start += i * sizeof(struct address_range); } return mem_start; } /* * Work out the sense (active-low level / active-high edge) * of each interrupt from the device tree. */ void __init prom_get_irq_senses(unsigned char *senses, int off, int max) { struct device_node *np; int i, j; /* default to level-triggered */ memset(senses, 1, max - off); for (np = allnodes; np != 0; np = np->allnext) { for (j = 0; j < np->n_intrs; j++) { i = np->intrs[j].line; if (i >= off && i < max) senses[i-off] = np->intrs[j].sense; } } } /* * Construct and return a list of the device_nodes with a given name. */ struct device_node * find_devices(const char *name) { struct device_node *head, **prevp, *np; prevp = &head; for (np = allnodes; np != 0; np = np->allnext) { if (np->name != 0 && strcasecmp(np->name, name) == 0) { *prevp = np; prevp = &np->next; } } *prevp = 0; return head; } /* * Construct and return a list of the device_nodes with a given type. */ struct device_node * find_type_devices(const char *type) { struct device_node *head, **prevp, *np; prevp = &head; for (np = allnodes; np != 0; np = np->allnext) { if (np->type != 0 && strcasecmp(np->type, type) == 0) { *prevp = np; prevp = &np->next; } } *prevp = 0; return head; } /* * Returns all nodes linked together */ struct device_node * __openfirmware find_all_nodes(void) { struct device_node *head, **prevp, *np; prevp = &head; for (np = allnodes; np != 0; np = np->allnext) { *prevp = np; prevp = &np->next; } *prevp = 0; return head; } /* Checks if the given "compat" string matches one of the strings in * the device's "compatible" property */ int device_is_compatible(struct device_node *device, const char *compat) { const char* cp; int cplen, l; cp = (char *) get_property(device, "compatible", &cplen); if (cp == NULL) return 0; while (cplen > 0) { if (strncasecmp(cp, compat, strlen(compat)) == 0) return 1; l = strlen(cp) + 1; cp += l; cplen -= l; } return 0; } /* * Indicates whether the root node has a given value in its * compatible property. */ int machine_is_compatible(const char *compat) { struct device_node *root; root = find_path_device("/"); if (root == 0) return 0; return device_is_compatible(root, compat); } /* * Construct and return a list of the device_nodes with a given type * and compatible property. */ struct device_node * find_compatible_devices(const char *type, const char *compat) { struct device_node *head, **prevp, *np; prevp = &head; for (np = allnodes; np != 0; np = np->allnext) { if (type != NULL && !(np->type != 0 && strcasecmp(np->type, type) == 0)) continue; if (device_is_compatible(np, compat)) { *prevp = np; prevp = &np->next; } } *prevp = 0; return head; } /* * Find the device_node with a given full_name. */ struct device_node * find_path_device(const char *path) { struct device_node *np; for (np = allnodes; np != 0; np = np->allnext) if (np->full_name != 0 && strcasecmp(np->full_name, path) == 0) return np; return NULL; } /* * Find the device_node with a given phandle. */ static struct device_node * __init find_phandle(phandle ph) { struct device_node *np; for (np = allnodes; np != 0; np = np->allnext) if (np->linux_phandle == ph) return np; return NULL; } /* * Find a property with a given name for a given node * and return the value. */ unsigned char * get_property(struct device_node *np, const char *name, int *lenp) { struct property *pp; for (pp = np->properties; pp != 0; pp = pp->next) if (strcmp(pp->name, name) == 0) { if (lenp != 0) *lenp = pp->length; return pp->value; } return 0; } /* * Add a property to a node */ void __openfirmware prom_add_property(struct device_node* np, struct property* prop) { struct property **next = &np->properties; prop->next = NULL; while (*next) next = &(*next)->next; *next = prop; } #if 0 void __openfirmware print_properties(struct device_node *np) { struct property *pp; char *cp; int i, n; for (pp = np->properties; pp != 0; pp = pp->next) { printk(KERN_INFO "%s", pp->name); for (i = strlen(pp->name); i < 16; ++i) printk(" "); cp = (char *) pp->value; for (i = pp->length; i > 0; --i, ++cp) if ((i > 1 && (*cp < 0x20 || *cp > 0x7e)) || (i == 1 && *cp != 0)) break; if (i == 0 && pp->length > 1) { /* looks like a string */ printk(" %s\n", (char *) pp->value); } else { /* dump it in hex */ n = pp->length; if (n > 64) n = 64; if (pp->length % 4 == 0) { unsigned int *p = (unsigned int *) pp->value; n /= 4; for (i = 0; i < n; ++i) { if (i != 0 && (i % 4) == 0) printk("\n "); printk(" %08x", *p++); } } else { unsigned char *bp = pp->value; for (i = 0; i < n; ++i) { if (i != 0 && (i % 16) == 0) printk("\n "); printk(" %02x", *bp++); } } printk("\n"); if (pp->length > 64) printk(" ... (length = %d)\n", pp->length); } } } #endif void __init abort(void) { #ifdef CONFIG_XMON xmon(NULL); #endif for (;;) prom_exit(); } /* Verify bi_recs are good */ static struct bi_record * prom_bi_rec_verify(struct bi_record *bi_recs) { struct bi_record *first, *last; if ( bi_recs == NULL || bi_recs->tag != BI_FIRST ) return NULL; last = (struct bi_record *)bi_recs->data[0]; if ( last == NULL || last->tag != BI_LAST ) return NULL; first = (struct bi_record *)last->data[0]; if ( first == NULL || first != bi_recs ) return NULL; return bi_recs; } static unsigned long prom_bi_rec_reserve(unsigned long mem) { unsigned long offset = reloc_offset(); struct prom_t *_prom = PTRRELOC(&prom); struct bi_record *rec; if ( _prom->bi_recs != NULL) { for ( rec=_prom->bi_recs; rec->tag != BI_LAST; rec=bi_rec_next(rec) ) { switch (rec->tag) { #ifdef CONFIG_BLK_DEV_INITRD case BI_INITRD: lmb_reserve(rec->data[0], rec->data[1]); break; #endif /* CONFIG_BLK_DEV_INITRD */ } } /* The next use of this field will be after relocation * is enabled, so convert this physical address into a * virtual address. */ _prom->bi_recs = PTRUNRELOC(_prom->bi_recs); } return mem; }