#include <platforms.h>
#include <mach_kdb.h>
-#include <himem.h>
#include <mach/i386/vm_param.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>
#include <i386/cpuid.h>
-#ifdef __MACHO__
#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_avail = 0;/* first after page tables */
vm_offset_t last_addr;
-uint64_t max_mem;
-uint64_t sane_size = 0; /* we are going to use the booter memory
- table info to construct this */
+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 */
+
+#define MAXBOUNCEPOOL (128 * 1024 * 1024)
+#define MAXLORESERVE ( 32 * 1024 * 1024)
+
+extern int bsd_mbuf_cluster_reserve(void);
+
+
+uint32_t bounce_pool_base = 0;
+uint32_t bounce_pool_size = 0;
-pmap_paddr_t avail_start, avail_end;
+static void reserve_bouncepool(uint32_t);
+
+
+pmap_paddr_t avail_start, avail_end;
vm_offset_t virtual_avail, virtual_end;
-pmap_paddr_t avail_remaining;
+static pmap_paddr_t avail_remaining;
vm_offset_t static_memory_end = 0;
-#ifndef __MACHO__
-extern char edata, end;
-#endif
-
-#ifdef __MACHO__
#include <mach-o/loader.h>
vm_offset_t edata, etext, end;
void *sectHIBB; int sectSizeHIB;
extern void *getsegdatafromheader(struct mach_header *, const char *, int *);
-#endif
+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)
{
pmap_memory_region_t *pmptr;
- MemoryRange *mptr;
+ pmap_memory_region_t *prev_pmptr;
+ EfiMemoryRange *mptr;
+ unsigned int mcount;
+ unsigned int msize;
ppnum_t fap;
unsigned int i;
- ppnum_t maxpg = (maxmem >> I386_PGSHIFT);
+ 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.
*/
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
-
- /*
- * Initialize the pic prior to any possible call to an spl.
- */
- set_cpu_model();
vm_set_page_size();
/*
* Compute the memory size.
*/
+ 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 = args->memoryMap;
-#ifdef PAE
-#define FOURGIG 0x0000000100000000ULL
- for (i=0; i < args->memoryMapCount; i++,mptr++) {
- ppnum_t base, top;
-
- base = (ppnum_t) (mptr->base >> I386_PGSHIFT);
- top = (ppnum_t) ((mptr->base + mptr->length) >> I386_PGSHIFT) - 1;
-
- if (maxmem) {
- if (base >= maxpg) break;
- top = (top > maxpg)? maxpg : top;
- }
-
- if (kMemoryRangeUsable != mptr->type) continue;
- sane_size += (uint64_t)(mptr->length);
-#ifdef DEVICES_HANDLE_64BIT_IO /* XXX enable else clause when I/O to high memory works */
- if (top < fap) {
- /* entire range below first_avail */
- continue;
- } else if (mptr->base >= FOURGIG) {
- /* entire range above 4GB (pre PAE) */
- continue;
- } 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 = mptr->type;
- /* we bump these here inline so the accounting below works
- correctly */
- pmptr++;
- pmap_memory_region_count++;
- pmptr->alloc = pmptr->base = fap;
- pmptr->type = mptr->type;
- pmptr->end = top;
- } else if ( (mptr->base < FOURGIG) &&
- ((mptr->base+mptr->length) > FOURGIG) ) {
- /* spans across 4GB (pre PAE) */
- pmptr->alloc = pmptr->base = base;
- pmptr->type = mptr->type;
- pmptr->end = (FOURGIG >> I386_PGSHIFT) - 1;
- } else {
- /* entire range useable */
- pmptr->alloc = pmptr->base = base;
- pmptr->type = mptr->type;
- pmptr->end = top;
- }
-#else
- if (top < fap) {
- /* entire range below first_avail */
- continue;
- } else if ( (base < fap) &&
- (top > fap)) {
- /* spans first_avail */
- pmptr->alloc = pmptr->base = fap;
- pmptr->type = mptr->type;
- pmptr->end = top;
- } else {
- /* entire range useable */
- pmptr->alloc = pmptr->base = base;
- pmptr->type = mptr->type;
- pmptr->end = top;
- }
-#endif
- if (i386_ptob(pmptr->end) > avail_end ) {
- avail_end = i386_ptob(pmptr->end);
- }
- avail_remaining += (pmptr->end - pmptr->base);
- pmap_memory_region_count++;
- pmptr++;
- }
-#else /* non PAE follows */
+ 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 < args->memoryMapCount; i++,mptr++) {
- ppnum_t base, top;
-
- base = (ppnum_t) (mptr->base >> I386_PGSHIFT);
- top = (ppnum_t) ((mptr->base + mptr->length) >> I386_PGSHIFT) - 1;
-
- if (maxmem) {
- if (base >= maxpg) break;
- top = (top > maxpg)? maxpg : top;
- }
-
- if (kMemoryRangeUsable != mptr->type) continue;
-
- // save other regions
- if (kMemoryRangeNVS == mptr->type) {
- // Mark this as a memory range (for hibernation),
- // but don't count as usable memory
- pmptr->base = base;
- pmptr->end = ((mptr->base + mptr->length + I386_PGBYTES - 1) >> I386_PGSHIFT) - 1;
- pmptr->alloc = pmptr->end;
- pmptr->type = mptr->type;
- kprintf("NVS region: 0x%x ->0x%x\n", pmptr->base, pmptr->end);
- } else if (kMemoryRangeUsable != mptr->type) {
- continue;
- } else {
- // Usable memory region
- sane_size += (uint64_t)(mptr->length);
- 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 */
- pmptr->base = 0x18; /* PAE and HIB use below this */
- pmptr->alloc = pmptr->end = top; /* mark as already mapped */
- pmptr->type = mptr->type;
- } else if (mptr->base >= FOURGIG) {
- /* entire range above 4GB (pre PAE) */
- continue;
- } 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 = mptr->type;
- /* we bump these here inline so the accounting below works
- correctly */
- pmptr++;
- pmap_memory_region_count++;
- pmptr->alloc = pmptr->base = fap;
- pmptr->type = mptr->type;
- pmptr->end = top;
- } else if ( (mptr->base < FOURGIG) &&
- ((mptr->base+mptr->length) > FOURGIG) ) {
- /* spans across 4GB (pre PAE) */
- pmptr->alloc = pmptr->base = base;
- pmptr->type = mptr->type;
- pmptr->end = (FOURGIG >> I386_PGSHIFT) - 1;
- } else {
- /* entire range useable */
- pmptr->alloc = pmptr->base = base;
- pmptr->type = mptr->type;
- pmptr->end = top;
- }
-
- if (i386_ptob(pmptr->end) > avail_end ) {
- avail_end = i386_ptob(pmptr->end);
- }
-
- avail_remaining += (pmptr->end - pmptr->base);
- pmap_memory_region_count++;
- pmptr++;
- }
+
+ 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++;
+ }
+ }
}
-#endif
+
#ifdef PRINT_PMAP_MEMORY_TABLE
- {
- unsigned int j;
- pmap_memory_region_t *p = pmap_memory_regions;
- for (j=0;j<pmap_memory_region_count;j++, p++) {
- kprintf("%d base 0x%x alloc 0x%x top 0x%x\n",j,
- p->base, p->alloc, p->end);
- }
- }
+ {
+ 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
avail_start = first_avail;
+ mem_actual = sane_size;
- if (maxmem) { /* if user set maxmem try to use it */
- uint64_t tmp = (uint64_t)maxmem;
- /* can't set below first_avail or above actual memory */
- if ( (maxmem > first_avail) && (tmp < sane_size) ) {
- sane_size = tmp;
- avail_end = maxmem;
- }
+#define MEG (1024*1024)
+
+ /*
+ * For user visible memory size, round up to 128 Mb - accounting for the various stolen memory
+ * not reported by EFI.
+ */
+
+ sane_size = (sane_size + 128 * MEG - 1) & ~((uint64_t)(128 * MEG - 1));
+
+ /*
+ * 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;
}
- // round up to a megabyte - mostly accounting for the
- // low mem madness
- sane_size += ( 0x100000ULL - 1);
- sane_size &= ~0xFFFFFULL;
-
-#ifndef PAE
- if (sane_size < FOURGIG)
- mem_size = (unsigned long) sane_size;
- else
- mem_size = (unsigned long) (FOURGIG >> 1);
-#else
- mem_size = (unsigned long) sane_size;
-#endif
+ /*
+ * mem_size is only a 32 bit container... follow the PPC route
+ * and pin it to a 2 Gbyte maximum
+ */
+ if (sane_size > (FOURGIG >> 1))
+ mem_size = (vm_size_t)(FOURGIG >> 1);
+ else
+ mem_size = (vm_size_t)sane_size;
max_mem = sane_size;
- /* now make sane size sane */
-#define MIN(a,b) (((a)<(b))?(a):(b))
-#define MEG (1024*1024)
- sane_size = MIN(sane_size, 256*MEG);
+ kprintf("Physical memory %d MB\n", sane_size/MEG);
- kprintf("Physical memory %d MB\n",
- mem_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;
+
+ if (!PE_parse_boot_arg("maxbouncepool", &maxbouncepoolsize))
+ maxbouncepoolsize = MAXBOUNCEPOOL;
+ else
+ maxbouncepoolsize = maxbouncepoolsize * (1024 * 1024);
/*
- * Initialize kernel physical map.
- * Kernel virtual address starts at VM_KERNEL_MIN_ADDRESS.
+ * 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
*/
- pmap_bootstrap(0);
+ if (!PE_parse_boot_arg("maxloreserve", &maxloreserve))
+ maxloreserve = MAXLORESERVE + bsd_mbuf_cluster_reserve();
+ else
+ maxloreserve = maxloreserve * (1024 * 1024);
+
+ 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, IA32e);
}
+
unsigned int
pmap_free_pages(void)
{
return avail_remaining;
}
+
boolean_t
pmap_next_page(
ppnum_t *pn)
{
-
- 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;
+
+ 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;
}
+
boolean_t
pmap_valid_page(
ppnum_t pn)
{
- unsigned int i;
- pmap_memory_region_t *pmptr = pmap_memory_regions;
-
- assert(pn);
- for (i=0; i<pmap_memory_region_count; i++, pmptr++) {
- if ( (pn >= pmptr->base) && (pn <= pmptr->end) ) {
- if (pmptr->type == kMemoryRangeUsable)
- return TRUE;
- else
- return FALSE;
- }
- }
- return FALSE;
+ unsigned int i;
+ pmap_memory_region_t *pmptr = pmap_memory_regions;
+
+ 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;
+}
+
+
+static void
+reserve_bouncepool(uint32_t bounce_pool_wanted)
+{
+ 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;
+ }
}
projects / apple / xnu.git / blobdiff