/*
* Copyright (c) 2003 Apple Computer, Inc. All rights reserved.
*
- * @APPLE_LICENSE_HEADER_START@
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
- * The contents of this file constitute Original Code as defined in and
- * are subject to the Apple Public Source License Version 1.1 (the
- * "License"). You may not use this file except in compliance with the
- * License. Please obtain a copy of the License at
- * http://www.apple.com/publicsource and read it before using this file.
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. The rights granted to you under the License
+ * may not be used to create, or enable the creation or redistribution of,
+ * unlawful or unlicensed copies of an Apple operating system, or to
+ * circumvent, violate, or enable the circumvention or violation of, any
+ * terms of an Apple operating system software license agreement.
*
- * This Original Code and all software distributed under the License are
- * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this file.
+ *
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
- * License for the specific language governing rights and limitations
- * under the License.
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
+ * limitations under the License.
*
- * @APPLE_LICENSE_HEADER_END@
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
*/
/*
* @OSF_COPYRIGHT@
* the rights to redistribute these changes.
*/
-#include <cpus.h>
#include <platforms.h>
#include <mach_kdb.h>
-#include <himem.h>
-#include <fast_idle.h>
#include <mach/i386/vm_param.h>
#include <mach/vm_prot.h>
#include <mach/machine.h>
#include <mach/time_value.h>
-#include <kern/etap_macros.h>
#include <kern/spl.h>
#include <kern/assert.h>
#include <kern/debug.h>
#include <vm/vm_kern.h>
#include <i386/pmap.h>
#include <i386/ipl.h>
-#include <i386/pio.h>
#include <i386/misc_protos.h>
#include <i386/mp_slave_boot.h>
-#ifdef __MACHO__
-#include <mach/boot_info.h>
+#include <i386/cpuid.h>
#include <mach/thread_status.h>
-#endif
+#include <pexpert/i386/efi.h>
+#include "i386_lowmem.h"
vm_size_t mem_size = 0;
-vm_offset_t first_addr = 0; /* set by start.s - keep out of bss */
vm_offset_t first_avail = 0;/* first after page tables */
vm_offset_t last_addr;
-uint64_t max_mem;
-uint64_t sane_size;
+uint64_t max_mem; /* Size of physical memory (bytes), adjusted by maxmem */
+uint64_t mem_actual;
+uint64_t sane_size = 0; /* Memory size to use for defaults calculations */
-vm_offset_t avail_start, avail_end;
-vm_offset_t virtual_avail, virtual_end;
-vm_offset_t hole_start, hole_end;
-vm_offset_t avail_next;
-unsigned int avail_remaining;
+#define MAXBOUNCEPOOL (128 * 1024 * 1024)
+#define MAXLORESERVE ( 32 * 1024 * 1024)
-/* parameters passed from bootstrap loader */
-int cnvmem = 0; /* must be in .data section */
-int extmem = 0;
+extern int bsd_mbuf_cluster_reserve(void);
-#ifndef __MACHO__
-extern char edata, end;
-#endif
-#ifdef __MACHO__
+uint32_t bounce_pool_base = 0;
+uint32_t bounce_pool_size = 0;
+
+static void reserve_bouncepool(uint32_t);
+
+
+pmap_paddr_t avail_start, avail_end;
+vm_offset_t virtual_avail, virtual_end;
+static pmap_paddr_t avail_remaining;
+vm_offset_t static_memory_end = 0;
+
#include <mach-o/loader.h>
vm_offset_t edata, etext, end;
+/*
+ * _mh_execute_header is the mach_header for the currently executing
+ * 32 bit kernel
+ */
extern struct mach_header _mh_execute_header;
void *sectTEXTB; int sectSizeTEXT;
void *sectDATAB; int sectSizeDATA;
void *sectOBJCB; int sectSizeOBJC;
void *sectLINKB; int sectSizeLINK;
void *sectPRELINKB; int sectSizePRELINK;
+void *sectHIBB; int sectSizeHIB;
-#endif
+extern void *getsegdatafromheader(struct mach_header *, const char *, int *);
+extern struct segment_command *getsegbyname(const char *);
+extern struct section *firstsect(struct segment_command *);
+extern struct section *nextsect(struct segment_command *, struct section *);
+
+
+void
+i386_macho_zerofill(void)
+{
+ struct segment_command *sgp;
+ struct section *sp;
+
+ sgp = getsegbyname("__DATA");
+ if (sgp) {
+ sp = firstsect(sgp);
+ if (sp) {
+ do {
+ if ((sp->flags & S_ZEROFILL))
+ bzero((char *) sp->addr, sp->size);
+ } while ((sp = nextsect(sgp, sp)));
+ }
+ }
+
+ return;
+}
/*
* Basic VM initialization.
*/
void
-i386_vm_init(unsigned int maxmem, KernelBootArgs_t *args)
+i386_vm_init(uint64_t maxmem,
+ boolean_t IA32e,
+ boot_args *args)
{
- int i,j; /* Standard index vars. */
- vm_size_t bios_hole_size;
+ pmap_memory_region_t *pmptr;
+ pmap_memory_region_t *prev_pmptr;
+ EfiMemoryRange *mptr;
+ unsigned int mcount;
+ unsigned int msize;
+ ppnum_t fap;
+ unsigned int i;
+ unsigned int safeboot;
+ ppnum_t maxpg = 0;
+ uint32_t pmap_type;
+ uint32_t maxbouncepoolsize;
+ uint32_t maxloreserve;
+ uint32_t maxdmaaddr;
-#ifdef __MACHO__
- /* Now retrieve addresses for end, edata, and etext
+ /*
+ * Now retrieve addresses for end, edata, and etext
* from MACH-O headers.
*/
&_mh_execute_header, "__OBJC", §SizeOBJC);
sectLINKB = (void *) getsegdatafromheader(
&_mh_execute_header, "__LINKEDIT", §SizeLINK);
+ sectHIBB = (void *)getsegdatafromheader(
+ &_mh_execute_header, "__HIB", §SizeHIB);
sectPRELINKB = (void *) getsegdatafromheader(
&_mh_execute_header, "__PRELINK", §SizePRELINK);
etext = (vm_offset_t) sectTEXTB + sectSizeTEXT;
edata = (vm_offset_t) sectDATAB + sectSizeDATA;
-#endif
-#ifndef __MACHO__
- /*
- * Zero the BSS.
- */
- bzero((char *)&edata,(unsigned)(&end - &edata));
-#endif
-
- /* Now copy over various boot args bits.. */
- cnvmem = args->convmem;
- extmem = args->extmem;
-
- /*
- * Initialize the pic prior to any possible call to an spl.
- */
-
- set_cpu_model();
vm_set_page_size();
- /*
- * Initialize the Event Trace Analysis Package
- * Static Phase: 1 of 2
- */
- etap_init_phase1();
-
/*
* Compute the memory size.
*/
-#if NCPUS > 1
- /* First two pages are used to boot the other cpus. */
- /* TODO - reclaim pages after all cpus have booted */
+ if ((1 == vm_himemory_mode) || PE_parse_boot_arg("-x", &safeboot)) {
+ maxpg = 1 << (32 - I386_PGSHIFT);
+ }
+ avail_remaining = 0;
+ avail_end = 0;
+ pmptr = pmap_memory_regions;
+ prev_pmptr = 0;
+ pmap_memory_region_count = pmap_memory_region_current = 0;
+ fap = (ppnum_t) i386_btop(first_avail);
+
+ mptr = (EfiMemoryRange *)args->MemoryMap;
+ if (args->MemoryMapDescriptorSize == 0)
+ panic("Invalid memory map descriptor size");
+ msize = args->MemoryMapDescriptorSize;
+ mcount = args->MemoryMapSize / msize;
+
+#define FOURGIG 0x0000000100000000ULL
+
+ for (i = 0; i < mcount; i++, mptr = (EfiMemoryRange *)(((vm_offset_t)mptr) + msize)) {
+ ppnum_t base, top;
+
+ if (pmap_memory_region_count >= PMAP_MEMORY_REGIONS_SIZE) {
+ kprintf("WARNING: truncating memory region count at %d\n", pmap_memory_region_count);
+ break;
+ }
+ base = (ppnum_t) (mptr->PhysicalStart >> I386_PGSHIFT);
+ top = (ppnum_t) ((mptr->PhysicalStart) >> I386_PGSHIFT) + mptr->NumberOfPages - 1;
+
+ switch (mptr->Type) {
+ case kEfiLoaderCode:
+ case kEfiLoaderData:
+ case kEfiBootServicesCode:
+ case kEfiBootServicesData:
+ case kEfiConventionalMemory:
+ /*
+ * Consolidate usable memory types into one.
+ */
+ pmap_type = kEfiConventionalMemory;
+ sane_size += (uint64_t)(mptr->NumberOfPages << I386_PGSHIFT);
+ break;
+
+ case kEfiRuntimeServicesCode:
+ case kEfiRuntimeServicesData:
+ case kEfiACPIReclaimMemory:
+ case kEfiACPIMemoryNVS:
+ case kEfiPalCode:
+ /*
+ * sane_size should reflect the total amount of physical ram
+ * in the system, not just the amount that is available for
+ * the OS to use
+ */
+ sane_size += (uint64_t)(mptr->NumberOfPages << I386_PGSHIFT);
+ /* fall thru */
+
+ case kEfiUnusableMemory:
+ case kEfiMemoryMappedIO:
+ case kEfiMemoryMappedIOPortSpace:
+ case kEfiReservedMemoryType:
+ default:
+ pmap_type = mptr->Type;
+ }
+
+ kprintf("EFI region: type = %d/%d, base = 0x%x, top = 0x%x\n", mptr->Type, pmap_type, base, top);
+
+ if (maxpg) {
+ if (base >= maxpg)
+ break;
+ top = (top > maxpg) ? maxpg : top;
+ }
+
+ /*
+ * handle each region
+ */
+ if (kEfiACPIMemoryNVS == pmap_type) {
+ prev_pmptr = 0;
+ continue;
+ } else if ((mptr->Attribute & EFI_MEMORY_RUNTIME) == EFI_MEMORY_RUNTIME ||
+ pmap_type != kEfiConventionalMemory) {
+ prev_pmptr = 0;
+ continue;
+ } else {
+ /*
+ * Usable memory region
+ */
+ if (top < I386_LOWMEM_RESERVED) {
+ prev_pmptr = 0;
+ continue;
+ }
+ if (top < fap) {
+ /*
+ * entire range below first_avail
+ * salvage some low memory pages
+ * we use some very low memory at startup
+ * mark as already allocated here
+ */
+ if (base >= I386_LOWMEM_RESERVED)
+ pmptr->base = base;
+ else
+ pmptr->base = I386_LOWMEM_RESERVED;
+ /*
+ * mark as already mapped
+ */
+ pmptr->alloc = pmptr->end = top;
+ pmptr->type = pmap_type;
+ }
+ else if ( (base < fap) && (top > fap) ) {
+ /*
+ * spans first_avail
+ * put mem below first avail in table but
+ * mark already allocated
+ */
+ pmptr->base = base;
+ pmptr->alloc = pmptr->end = (fap - 1);
+ pmptr->type = pmap_type;
+ /*
+ * we bump these here inline so the accounting
+ * below works correctly
+ */
+ pmptr++;
+ pmap_memory_region_count++;
+ pmptr->alloc = pmptr->base = fap;
+ pmptr->type = pmap_type;
+ pmptr->end = top;
+ }
+ else {
+ /*
+ * entire range useable
+ */
+ pmptr->alloc = pmptr->base = base;
+ pmptr->type = pmap_type;
+ pmptr->end = top;
+ }
+
+ if (i386_ptob(pmptr->end) > avail_end )
+ avail_end = i386_ptob(pmptr->end);
+
+ avail_remaining += (pmptr->end - pmptr->base);
+
+ /*
+ * Consolidate contiguous memory regions, if possible
+ */
+ if (prev_pmptr &&
+ pmptr->type == prev_pmptr->type &&
+ pmptr->base == pmptr->alloc &&
+ pmptr->base == (prev_pmptr->end + 1)) {
+ prev_pmptr->end = pmptr->end;
+ } else {
+ pmap_memory_region_count++;
+ prev_pmptr = pmptr;
+ pmptr++;
+ }
+ }
+ }
+
- first_addr = MP_FIRST_ADDR;
-#else
- first_addr = 0x1000;
+#ifdef PRINT_PMAP_MEMORY_TABLE
+ {
+ unsigned int j;
+ pmap_memory_region_t *p = pmap_memory_regions;
+ vm_offset_t region_start, region_end;
+ vm_offset_t efi_start, efi_end;
+ for (j=0;j<pmap_memory_region_count;j++, p++) {
+ kprintf("type %d base 0x%x alloc 0x%x top 0x%x\n", p->type,
+ p->base << I386_PGSHIFT, p->alloc << I386_PGSHIFT, p->end << I386_PGSHIFT);
+ region_start = p->base << I386_PGSHIFT;
+ region_end = (p->end << I386_PGSHIFT) - 1;
+ mptr = args->MemoryMap;
+ for (i=0; i<mcount; i++, mptr = (EfiMemoryRange *)(((vm_offset_t)mptr) + msize)) {
+ if (mptr->Type != kEfiLoaderCode &&
+ mptr->Type != kEfiLoaderData &&
+ mptr->Type != kEfiBootServicesCode &&
+ mptr->Type != kEfiBootServicesData &&
+ mptr->Type != kEfiConventionalMemory) {
+ efi_start = (vm_offset_t)mptr->PhysicalStart;
+ efi_end = efi_start + ((vm_offset_t)mptr->NumberOfPages << I386_PGSHIFT) - 1;
+ if ((efi_start >= region_start && efi_start <= region_end) ||
+ (efi_end >= region_start && efi_end <= region_end)) {
+ kprintf(" *** Overlapping region with EFI runtime region %d\n", i);
+ }
+ }
+
+ }
+ }
+ }
#endif
- /* BIOS leaves data in low memory */
- last_addr = 1024*1024 + extmem*1024;
+ avail_start = first_avail;
+ mem_actual = sane_size;
- /* extended memory starts at 1MB */
-
- bios_hole_size = 1024*1024 - trunc_page((vm_offset_t)(1024 * cnvmem));
+#define MEG (1024*1024)
/*
- * Initialize for pmap_free_pages and pmap_next_page.
- * These guys should be page-aligned.
+ * For user visible memory size, round up to 128 Mb - accounting for the various stolen memory
+ * not reported by EFI.
*/
- hole_start = trunc_page((vm_offset_t)(1024 * cnvmem));
- hole_end = round_page((vm_offset_t)first_avail);
+ sane_size = (sane_size + 128 * MEG - 1) & ~((uint64_t)(128 * MEG - 1));
/*
- * compute mem_size
+ * if user set maxmem, reduce memory sizes
*/
+ if ( (maxmem > (uint64_t)first_avail) && (maxmem < sane_size)) {
+ ppnum_t discarded_pages = (sane_size - maxmem) >> I386_PGSHIFT;
+ sane_size = maxmem;
+ if (avail_remaining > discarded_pages)
+ avail_remaining -= discarded_pages;
+ else
+ avail_remaining = 0;
+ }
/*
- * We're currently limited to 512 MB max physical memory.
+ * mem_size is only a 32 bit container... follow the PPC route
+ * and pin it to a 2 Gbyte maximum
*/
-#define M (1024*1024)
-#define MAXMEM (512*M)
- if ((maxmem == 0) && (last_addr - bios_hole_size > MAXMEM)) {
- printf("Physical memory %d MB, "\
- "maximum usable memory limited to %d MB\n",
- (last_addr - bios_hole_size)/M, MAXMEM/M);
- maxmem = MAXMEM;
- }
+ if (sane_size > (FOURGIG >> 1))
+ mem_size = (vm_size_t)(FOURGIG >> 1);
+ else
+ mem_size = (vm_size_t)sane_size;
+ max_mem = sane_size;
- if (maxmem != 0) {
- if (maxmem < (last_addr) - bios_hole_size)
- last_addr = maxmem + bios_hole_size;
- }
+ kprintf("Physical memory %d MB\n", sane_size/MEG);
+
+ if (!PE_parse_boot_arg("max_valid_dma_addr", &maxdmaaddr))
+ max_valid_dma_address = 1024ULL * 1024ULL * 4096ULL;
+ else
+ max_valid_dma_address = ((uint64_t) maxdmaaddr) * 1024ULL * 1024ULL;
- first_addr = round_page(first_addr);
- last_addr = trunc_page(last_addr);
- mem_size = last_addr - bios_hole_size;
+ if (!PE_parse_boot_arg("maxbouncepool", &maxbouncepoolsize))
+ maxbouncepoolsize = MAXBOUNCEPOOL;
+ else
+ maxbouncepoolsize = maxbouncepoolsize * (1024 * 1024);
- max_mem = (uint64_t)mem_size;
- sane_size = max_mem;
+ /*
+ * bsd_mbuf_cluster_reserve depends on sane_size being set
+ * in order to correctly determine the size of the mbuf pool
+ * that will be reserved
+ */
+ if (!PE_parse_boot_arg("maxloreserve", &maxloreserve))
+ maxloreserve = MAXLORESERVE + bsd_mbuf_cluster_reserve();
+ else
+ maxloreserve = maxloreserve * (1024 * 1024);
- avail_start = first_addr;
- avail_end = last_addr;
- avail_next = avail_start;
-#if NCPUS > 1
- interrupt_stack_alloc();
-#endif /* NCPUS > 1 */
+ if (avail_end >= max_valid_dma_address) {
+ if (maxbouncepoolsize)
+ reserve_bouncepool(maxbouncepoolsize);
+
+ if (maxloreserve)
+ vm_lopage_poolsize = maxloreserve / PAGE_SIZE;
+ }
/*
* Initialize kernel physical map.
* Kernel virtual address starts at VM_KERNEL_MIN_ADDRESS.
*/
- pmap_bootstrap(0);
-
- avail_remaining = atop((avail_end - avail_start) -
- (hole_end - hole_start));
+ pmap_bootstrap(0, IA32e);
}
+
unsigned int
pmap_free_pages(void)
{
return avail_remaining;
}
+
boolean_t
pmap_next_page(
ppnum_t *pn)
{
- if (avail_next == avail_end)
- return FALSE;
-
- /* skip the hole */
+
+ if (avail_remaining) while (pmap_memory_region_current < pmap_memory_region_count) {
+ if (pmap_memory_regions[pmap_memory_region_current].alloc ==
+ pmap_memory_regions[pmap_memory_region_current].end) {
+ pmap_memory_region_current++;
+ continue;
+ }
+ *pn = pmap_memory_regions[pmap_memory_region_current].alloc++;
+ avail_remaining--;
+
+ return TRUE;
+ }
+ return FALSE;
+}
- if (avail_next == hole_start)
- avail_next = hole_end;
- *pn = (ppnum_t)i386_btop(avail_next);
- avail_next += PAGE_SIZE;
- avail_remaining--;
+boolean_t
+pmap_valid_page(
+ ppnum_t pn)
+{
+ unsigned int i;
+ pmap_memory_region_t *pmptr = pmap_memory_regions;
- return TRUE;
+ assert(pn);
+ for (i = 0; i < pmap_memory_region_count; i++, pmptr++) {
+ if ( (pn >= pmptr->base) && (pn <= pmptr->end) && pmptr->type == kEfiConventionalMemory )
+ return TRUE;
+ }
+ return FALSE;
}
-boolean_t
-pmap_valid_page(
- vm_offset_t x)
+
+static void
+reserve_bouncepool(uint32_t bounce_pool_wanted)
{
- return ((avail_start <= x) && (x < avail_end));
+ pmap_memory_region_t *pmptr = pmap_memory_regions;
+ pmap_memory_region_t *lowest = NULL;
+ unsigned int i;
+ unsigned int pages_needed;
+
+ pages_needed = bounce_pool_wanted / PAGE_SIZE;
+
+ for (i = 0; i < pmap_memory_region_count; i++, pmptr++) {
+ if ( (pmptr->type == kEfiConventionalMemory) && ((pmptr->end - pmptr->alloc) >= pages_needed) ) {
+ if ( (lowest == NULL) || (pmptr->alloc < lowest->alloc) )
+ lowest = pmptr;
+ }
+ }
+ if ( (lowest != NULL) ) {
+ bounce_pool_base = lowest->alloc * PAGE_SIZE;
+ bounce_pool_size = bounce_pool_wanted;
+
+ lowest->alloc += pages_needed;
+ avail_remaining -= pages_needed;
+ }
}
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