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authorTony Luck <tony.luck@intel.com>2005-10-28 14:32:30 -0700
committerTony Luck <tony.luck@intel.com>2005-10-28 14:32:30 -0700
commit5833f1420b96c4f9b193b7f2fcbc0003dc032fe8 (patch)
treeccb3933b3c694ba4724c3a392d6e275d992ed86b
parenta1e78db3f54d3481726ed2d3d58d8ad5b19b13d0 (diff)
parentd719948e623622cf9fc8016f7ec63422d929eb3b (diff)
downloadblackbird-op-linux-5833f1420b96c4f9b193b7f2fcbc0003dc032fe8.tar.gz
blackbird-op-linux-5833f1420b96c4f9b193b7f2fcbc0003dc032fe8.zip
Pull new-efi-memmap into release branch
-rw-r--r--arch/ia64/kernel/efi.c510
-rw-r--r--arch/ia64/kernel/setup.c32
-rw-r--r--arch/ia64/kernel/uncached.c17
-rw-r--r--include/asm-ia64/meminit.h4
4 files changed, 370 insertions, 193 deletions
diff --git a/arch/ia64/kernel/efi.c b/arch/ia64/kernel/efi.c
index 179f230816ed..f72ea6aebcb1 100644
--- a/arch/ia64/kernel/efi.c
+++ b/arch/ia64/kernel/efi.c
@@ -239,57 +239,30 @@ is_available_memory (efi_memory_desc_t *md)
return 0;
}
-/*
- * Trim descriptor MD so its starts at address START_ADDR. If the descriptor covers
- * memory that is normally available to the kernel, issue a warning that some memory
- * is being ignored.
- */
-static void
-trim_bottom (efi_memory_desc_t *md, u64 start_addr)
-{
- u64 num_skipped_pages;
+typedef struct kern_memdesc {
+ u64 attribute;
+ u64 start;
+ u64 num_pages;
+} kern_memdesc_t;
- if (md->phys_addr >= start_addr || !md->num_pages)
- return;
-
- num_skipped_pages = (start_addr - md->phys_addr) >> EFI_PAGE_SHIFT;
- if (num_skipped_pages > md->num_pages)
- num_skipped_pages = md->num_pages;
-
- if (is_available_memory(md))
- printk(KERN_NOTICE "efi.%s: ignoring %luKB of memory at 0x%lx due to granule hole "
- "at 0x%lx\n", __FUNCTION__,
- (num_skipped_pages << EFI_PAGE_SHIFT) >> 10,
- md->phys_addr, start_addr - IA64_GRANULE_SIZE);
- /*
- * NOTE: Don't set md->phys_addr to START_ADDR because that could cause the memory
- * descriptor list to become unsorted. In such a case, md->num_pages will be
- * zero, so the Right Thing will happen.
- */
- md->phys_addr += num_skipped_pages << EFI_PAGE_SHIFT;
- md->num_pages -= num_skipped_pages;
-}
+static kern_memdesc_t *kern_memmap;
static void
-trim_top (efi_memory_desc_t *md, u64 end_addr)
+walk (efi_freemem_callback_t callback, void *arg, u64 attr)
{
- u64 num_dropped_pages, md_end_addr;
-
- md_end_addr = md->phys_addr + (md->num_pages << EFI_PAGE_SHIFT);
-
- if (md_end_addr <= end_addr || !md->num_pages)
- return;
+ kern_memdesc_t *k;
+ u64 start, end, voff;
- num_dropped_pages = (md_end_addr - end_addr) >> EFI_PAGE_SHIFT;
- if (num_dropped_pages > md->num_pages)
- num_dropped_pages = md->num_pages;
-
- if (is_available_memory(md))
- printk(KERN_NOTICE "efi.%s: ignoring %luKB of memory at 0x%lx due to granule hole "
- "at 0x%lx\n", __FUNCTION__,
- (num_dropped_pages << EFI_PAGE_SHIFT) >> 10,
- md->phys_addr, end_addr);
- md->num_pages -= num_dropped_pages;
+ voff = (attr == EFI_MEMORY_WB) ? PAGE_OFFSET : __IA64_UNCACHED_OFFSET;
+ for (k = kern_memmap; k->start != ~0UL; k++) {
+ if (k->attribute != attr)
+ continue;
+ start = PAGE_ALIGN(k->start);
+ end = (k->start + (k->num_pages << EFI_PAGE_SHIFT)) & PAGE_MASK;
+ if (start < end)
+ if ((*callback)(start + voff, end + voff, arg) < 0)
+ return;
+ }
}
/*
@@ -299,148 +272,19 @@ trim_top (efi_memory_desc_t *md, u64 end_addr)
void
efi_memmap_walk (efi_freemem_callback_t callback, void *arg)
{
- int prev_valid = 0;
- struct range {
- u64 start;
- u64 end;
- } prev, curr;
- void *efi_map_start, *efi_map_end, *p, *q;
- efi_memory_desc_t *md, *check_md;
- u64 efi_desc_size, start, end, granule_addr, last_granule_addr, first_non_wb_addr = 0;
- unsigned long total_mem = 0;
-
- efi_map_start = __va(ia64_boot_param->efi_memmap);
- efi_map_end = efi_map_start + ia64_boot_param->efi_memmap_size;
- efi_desc_size = ia64_boot_param->efi_memdesc_size;
-
- for (p = efi_map_start; p < efi_map_end; p += efi_desc_size) {
- md = p;
-
- /* skip over non-WB memory descriptors; that's all we're interested in... */
- if (!(md->attribute & EFI_MEMORY_WB))
- continue;
-
- /*
- * granule_addr is the base of md's first granule.
- * [granule_addr - first_non_wb_addr) is guaranteed to
- * be contiguous WB memory.
- */
- granule_addr = GRANULEROUNDDOWN(md->phys_addr);
- first_non_wb_addr = max(first_non_wb_addr, granule_addr);
-
- if (first_non_wb_addr < md->phys_addr) {
- trim_bottom(md, granule_addr + IA64_GRANULE_SIZE);
- granule_addr = GRANULEROUNDDOWN(md->phys_addr);
- first_non_wb_addr = max(first_non_wb_addr, granule_addr);
- }
-
- for (q = p; q < efi_map_end; q += efi_desc_size) {
- check_md = q;
-
- if ((check_md->attribute & EFI_MEMORY_WB) &&
- (check_md->phys_addr == first_non_wb_addr))
- first_non_wb_addr += check_md->num_pages << EFI_PAGE_SHIFT;
- else
- break; /* non-WB or hole */
- }
-
- last_granule_addr = GRANULEROUNDDOWN(first_non_wb_addr);
- if (last_granule_addr < md->phys_addr + (md->num_pages << EFI_PAGE_SHIFT))
- trim_top(md, last_granule_addr);
-
- if (is_available_memory(md)) {
- if (md->phys_addr + (md->num_pages << EFI_PAGE_SHIFT) >= max_addr) {
- if (md->phys_addr >= max_addr)
- continue;
- md->num_pages = (max_addr - md->phys_addr) >> EFI_PAGE_SHIFT;
- first_non_wb_addr = max_addr;
- }
-
- if (total_mem >= mem_limit)
- continue;
-
- if (total_mem + (md->num_pages << EFI_PAGE_SHIFT) > mem_limit) {
- unsigned long limit_addr = md->phys_addr;
-
- limit_addr += mem_limit - total_mem;
- limit_addr = GRANULEROUNDDOWN(limit_addr);
-
- if (md->phys_addr > limit_addr)
- continue;
-
- md->num_pages = (limit_addr - md->phys_addr) >>
- EFI_PAGE_SHIFT;
- first_non_wb_addr = max_addr = md->phys_addr +
- (md->num_pages << EFI_PAGE_SHIFT);
- }
- total_mem += (md->num_pages << EFI_PAGE_SHIFT);
-
- if (md->num_pages == 0)
- continue;
-
- curr.start = PAGE_OFFSET + md->phys_addr;
- curr.end = curr.start + (md->num_pages << EFI_PAGE_SHIFT);
-
- if (!prev_valid) {
- prev = curr;
- prev_valid = 1;
- } else {
- if (curr.start < prev.start)
- printk(KERN_ERR "Oops: EFI memory table not ordered!\n");
-
- if (prev.end == curr.start) {
- /* merge two consecutive memory ranges */
- prev.end = curr.end;
- } else {
- start = PAGE_ALIGN(prev.start);
- end = prev.end & PAGE_MASK;
- if ((end > start) && (*callback)(start, end, arg) < 0)
- return;
- prev = curr;
- }
- }
- }
- }
- if (prev_valid) {
- start = PAGE_ALIGN(prev.start);
- end = prev.end & PAGE_MASK;
- if (end > start)
- (*callback)(start, end, arg);
- }
+ walk(callback, arg, EFI_MEMORY_WB);
}
/*
- * Walk the EFI memory map to pull out leftover pages in the lower
- * memory regions which do not end up in the regular memory map and
- * stick them into the uncached allocator
- *
- * The regular walk function is significantly more complex than the
- * uncached walk which means it really doesn't make sense to try and
- * marge the two.
+ * Walks the EFI memory map and calls CALLBACK once for each EFI memory descriptor that
+ * has memory that is available for uncached allocator.
*/
-void __init
-efi_memmap_walk_uc (efi_freemem_callback_t callback)
+void
+efi_memmap_walk_uc (efi_freemem_callback_t callback, void *arg)
{
- void *efi_map_start, *efi_map_end, *p;
- efi_memory_desc_t *md;
- u64 efi_desc_size, start, end;
-
- efi_map_start = __va(ia64_boot_param->efi_memmap);
- efi_map_end = efi_map_start + ia64_boot_param->efi_memmap_size;
- efi_desc_size = ia64_boot_param->efi_memdesc_size;
-
- for (p = efi_map_start; p < efi_map_end; p += efi_desc_size) {
- md = p;
- if (md->attribute == EFI_MEMORY_UC) {
- start = PAGE_ALIGN(md->phys_addr);
- end = PAGE_ALIGN((md->phys_addr+(md->num_pages << EFI_PAGE_SHIFT)) & PAGE_MASK);
- if ((*callback)(start, end, NULL) < 0)
- return;
- }
- }
+ walk(callback, arg, EFI_MEMORY_UC);
}
-
/*
* Look for the PAL_CODE region reported by EFI and maps it using an
* ITR to enable safe PAL calls in virtual mode. See IA-64 Processor
@@ -862,3 +706,307 @@ efi_uart_console_only(void)
printk(KERN_ERR "Malformed %s value\n", name);
return 0;
}
+
+#define efi_md_size(md) (md->num_pages << EFI_PAGE_SHIFT)
+
+static inline u64
+kmd_end(kern_memdesc_t *kmd)
+{
+ return (kmd->start + (kmd->num_pages << EFI_PAGE_SHIFT));
+}
+
+static inline u64
+efi_md_end(efi_memory_desc_t *md)
+{
+ return (md->phys_addr + efi_md_size(md));
+}
+
+static inline int
+efi_wb(efi_memory_desc_t *md)
+{
+ return (md->attribute & EFI_MEMORY_WB);
+}
+
+static inline int
+efi_uc(efi_memory_desc_t *md)
+{
+ return (md->attribute & EFI_MEMORY_UC);
+}
+
+/*
+ * Look for the first granule aligned memory descriptor memory
+ * that is big enough to hold EFI memory map. Make sure this
+ * descriptor is atleast granule sized so it does not get trimmed
+ */
+struct kern_memdesc *
+find_memmap_space (void)
+{
+ u64 contig_low=0, contig_high=0;
+ u64 as = 0, ae;
+ void *efi_map_start, *efi_map_end, *p, *q;
+ efi_memory_desc_t *md, *pmd = NULL, *check_md;
+ u64 space_needed, efi_desc_size;
+ unsigned long total_mem = 0;
+
+ efi_map_start = __va(ia64_boot_param->efi_memmap);
+ efi_map_end = efi_map_start + ia64_boot_param->efi_memmap_size;
+ efi_desc_size = ia64_boot_param->efi_memdesc_size;
+
+ /*
+ * Worst case: we need 3 kernel descriptors for each efi descriptor
+ * (if every entry has a WB part in the middle, and UC head and tail),
+ * plus one for the end marker.
+ */
+ space_needed = sizeof(kern_memdesc_t) *
+ (3 * (ia64_boot_param->efi_memmap_size/efi_desc_size) + 1);
+
+ for (p = efi_map_start; p < efi_map_end; pmd = md, p += efi_desc_size) {
+ md = p;
+ if (!efi_wb(md)) {
+ continue;
+ }
+ if (pmd == NULL || !efi_wb(pmd) || efi_md_end(pmd) != md->phys_addr) {
+ contig_low = GRANULEROUNDUP(md->phys_addr);
+ contig_high = efi_md_end(md);
+ for (q = p + efi_desc_size; q < efi_map_end; q += efi_desc_size) {
+ check_md = q;
+ if (!efi_wb(check_md))
+ break;
+ if (contig_high != check_md->phys_addr)
+ break;
+ contig_high = efi_md_end(check_md);
+ }
+ contig_high = GRANULEROUNDDOWN(contig_high);
+ }
+ if (!is_available_memory(md) || md->type == EFI_LOADER_DATA)
+ continue;
+
+ /* Round ends inward to granule boundaries */
+ as = max(contig_low, md->phys_addr);
+ ae = min(contig_high, efi_md_end(md));
+
+ /* keep within max_addr= command line arg */
+ ae = min(ae, max_addr);
+ if (ae <= as)
+ continue;
+
+ /* avoid going over mem= command line arg */
+ if (total_mem + (ae - as) > mem_limit)
+ ae -= total_mem + (ae - as) - mem_limit;
+
+ if (ae <= as)
+ continue;
+
+ if (ae - as > space_needed)
+ break;
+ }
+ if (p >= efi_map_end)
+ panic("Can't allocate space for kernel memory descriptors");
+
+ return __va(as);
+}
+
+/*
+ * Walk the EFI memory map and gather all memory available for kernel
+ * to use. We can allocate partial granules only if the unavailable
+ * parts exist, and are WB.
+ */
+void
+efi_memmap_init(unsigned long *s, unsigned long *e)
+{
+ struct kern_memdesc *k, *prev = 0;
+ u64 contig_low=0, contig_high=0;
+ u64 as, ae, lim;
+ void *efi_map_start, *efi_map_end, *p, *q;
+ efi_memory_desc_t *md, *pmd = NULL, *check_md;
+ u64 efi_desc_size;
+ unsigned long total_mem = 0;
+
+ k = kern_memmap = find_memmap_space();
+
+ efi_map_start = __va(ia64_boot_param->efi_memmap);
+ efi_map_end = efi_map_start + ia64_boot_param->efi_memmap_size;
+ efi_desc_size = ia64_boot_param->efi_memdesc_size;
+
+ for (p = efi_map_start; p < efi_map_end; pmd = md, p += efi_desc_size) {
+ md = p;
+ if (!efi_wb(md)) {
+ if (efi_uc(md) && (md->type == EFI_CONVENTIONAL_MEMORY ||
+ md->type == EFI_BOOT_SERVICES_DATA)) {
+ k->attribute = EFI_MEMORY_UC;
+ k->start = md->phys_addr;
+ k->num_pages = md->num_pages;
+ k++;
+ }
+ continue;
+ }
+ if (pmd == NULL || !efi_wb(pmd) || efi_md_end(pmd) != md->phys_addr) {
+ contig_low = GRANULEROUNDUP(md->phys_addr);
+ contig_high = efi_md_end(md);
+ for (q = p + efi_desc_size; q < efi_map_end; q += efi_desc_size) {
+ check_md = q;
+ if (!efi_wb(check_md))
+ break;
+ if (contig_high != check_md->phys_addr)
+ break;
+ contig_high = efi_md_end(check_md);
+ }
+ contig_high = GRANULEROUNDDOWN(contig_high);
+ }
+ if (!is_available_memory(md))
+ continue;
+
+ /*
+ * Round ends inward to granule boundaries
+ * Give trimmings to uncached allocator
+ */
+ if (md->phys_addr < contig_low) {
+ lim = min(efi_md_end(md), contig_low);
+ if (efi_uc(md)) {
+ if (k > kern_memmap && (k-1)->attribute == EFI_MEMORY_UC &&
+ kmd_end(k-1) == md->phys_addr) {
+ (k-1)->num_pages += (lim - md->phys_addr) >> EFI_PAGE_SHIFT;
+ } else {
+ k->attribute = EFI_MEMORY_UC;
+ k->start = md->phys_addr;
+ k->num_pages = (lim - md->phys_addr) >> EFI_PAGE_SHIFT;
+ k++;
+ }
+ }
+ as = contig_low;
+ } else
+ as = md->phys_addr;
+
+ if (efi_md_end(md) > contig_high) {
+ lim = max(md->phys_addr, contig_high);
+ if (efi_uc(md)) {
+ if (lim == md->phys_addr && k > kern_memmap &&
+ (k-1)->attribute == EFI_MEMORY_UC &&
+ kmd_end(k-1) == md->phys_addr) {
+ (k-1)->num_pages += md->num_pages;
+ } else {
+ k->attribute = EFI_MEMORY_UC;
+ k->start = lim;
+ k->num_pages = (efi_md_end(md) - lim) >> EFI_PAGE_SHIFT;
+ k++;
+ }
+ }
+ ae = contig_high;
+ } else
+ ae = efi_md_end(md);
+
+ /* keep within max_addr= command line arg */
+ ae = min(ae, max_addr);
+ if (ae <= as)
+ continue;
+
+ /* avoid going over mem= command line arg */
+ if (total_mem + (ae - as) > mem_limit)
+ ae -= total_mem + (ae - as) - mem_limit;
+
+ if (ae <= as)
+ continue;
+ if (prev && kmd_end(prev) == md->phys_addr) {
+ prev->num_pages += (ae - as) >> EFI_PAGE_SHIFT;
+ total_mem += ae - as;
+ continue;
+ }
+ k->attribute = EFI_MEMORY_WB;
+ k->start = as;
+ k->num_pages = (ae - as) >> EFI_PAGE_SHIFT;
+ total_mem += ae - as;
+ prev = k++;
+ }
+ k->start = ~0L; /* end-marker */
+
+ /* reserve the memory we are using for kern_memmap */
+ *s = (u64)kern_memmap;
+ *e = (u64)++k;
+}
+
+void
+efi_initialize_iomem_resources(struct resource *code_resource,
+ struct resource *data_resource)
+{
+ struct resource *res;
+ void *efi_map_start, *efi_map_end, *p;
+ efi_memory_desc_t *md;
+ u64 efi_desc_size;
+ char *name;
+ unsigned long flags;
+
+ efi_map_start = __va(ia64_boot_param->efi_memmap);
+ efi_map_end = efi_map_start + ia64_boot_param->efi_memmap_size;
+ efi_desc_size = ia64_boot_param->efi_memdesc_size;
+
+ res = NULL;
+
+ for (p = efi_map_start; p < efi_map_end; p += efi_desc_size) {
+ md = p;
+
+ if (md->num_pages == 0) /* should not happen */
+ continue;
+
+ flags = IORESOURCE_MEM;
+ switch (md->type) {
+
+ case EFI_MEMORY_MAPPED_IO:
+ case EFI_MEMORY_MAPPED_IO_PORT_SPACE:
+ continue;
+
+ case EFI_LOADER_CODE:
+ case EFI_LOADER_DATA:
+ case EFI_BOOT_SERVICES_DATA:
+ case EFI_BOOT_SERVICES_CODE:
+ case EFI_CONVENTIONAL_MEMORY:
+ if (md->attribute & EFI_MEMORY_WP) {
+ name = "System ROM";
+ flags |= IORESOURCE_READONLY;
+ } else {
+ name = "System RAM";
+ }
+ break;
+
+ case EFI_ACPI_MEMORY_NVS:
+ name = "ACPI Non-volatile Storage";
+ flags |= IORESOURCE_BUSY;
+ break;
+
+ case EFI_UNUSABLE_MEMORY:
+ name = "reserved";
+ flags |= IORESOURCE_BUSY | IORESOURCE_DISABLED;
+ break;
+
+ case EFI_RESERVED_TYPE:
+ case EFI_RUNTIME_SERVICES_CODE:
+ case EFI_RUNTIME_SERVICES_DATA:
+ case EFI_ACPI_RECLAIM_MEMORY:
+ default:
+ name = "reserved";
+ flags |= IORESOURCE_BUSY;
+ break;
+ }
+
+ if ((res = kcalloc(1, sizeof(struct resource), GFP_KERNEL)) == NULL) {
+ printk(KERN_ERR "failed to alocate resource for iomem\n");
+ return;
+ }
+
+ res->name = name;
+ res->start = md->phys_addr;
+ res->end = md->phys_addr + (md->num_pages << EFI_PAGE_SHIFT) - 1;
+ res->flags = flags;
+
+ if (insert_resource(&iomem_resource, res) < 0)
+ kfree(res);
+ else {
+ /*
+ * We don't know which region contains
+ * kernel data so we try it repeatedly and
+ * let the resource manager test it.
+ */
+ insert_resource(res, code_resource);
+ insert_resource(res, data_resource);
+ }
+ }
+}
diff --git a/arch/ia64/kernel/setup.c b/arch/ia64/kernel/setup.c
index e256b114bf4e..f95fd2766634 100644
--- a/arch/ia64/kernel/setup.c
+++ b/arch/ia64/kernel/setup.c
@@ -78,6 +78,19 @@ struct screen_info screen_info;
unsigned long vga_console_iobase;
unsigned long vga_console_membase;
+static struct resource data_resource = {
+ .name = "Kernel data",
+ .flags = IORESOURCE_BUSY | IORESOURCE_MEM
+};
+
+static struct resource code_resource = {
+ .name = "Kernel code",
+ .flags = IORESOURCE_BUSY | IORESOURCE_MEM
+};
+extern void efi_initialize_iomem_resources(struct resource *,
+ struct resource *);
+extern char _text[], _end[], _etext[];
+
unsigned long ia64_max_cacheline_size;
unsigned long ia64_iobase; /* virtual address for I/O accesses */
EXPORT_SYMBOL(ia64_iobase);
@@ -171,6 +184,22 @@ sort_regions (struct rsvd_region *rsvd_region, int max)
}
}
+/*
+ * Request address space for all standard resources
+ */
+static int __init register_memory(void)
+{
+ code_resource.start = ia64_tpa(_text);
+ code_resource.end = ia64_tpa(_etext) - 1;
+ data_resource.start = ia64_tpa(_etext);
+ data_resource.end = ia64_tpa(_end) - 1;
+ efi_initialize_iomem_resources(&code_resource, &data_resource);
+
+ return 0;
+}
+
+__initcall(register_memory);
+
/**
* reserve_memory - setup reserved memory areas
*
@@ -211,6 +240,9 @@ reserve_memory (void)
}
#endif
+ efi_memmap_init(&rsvd_region[n].start, &rsvd_region[n].end);
+ n++;
+
/* end of memory marker */
rsvd_region[n].start = ~0UL;
rsvd_region[n].end = ~0UL;
diff --git a/arch/ia64/kernel/uncached.c b/arch/ia64/kernel/uncached.c
index 4e9d06c48a8b..c6d40446c2c4 100644
--- a/arch/ia64/kernel/uncached.c
+++ b/arch/ia64/kernel/uncached.c
@@ -205,23 +205,18 @@ EXPORT_SYMBOL(uncached_free_page);
static int __init
uncached_build_memmap(unsigned long start, unsigned long end, void *arg)
{
- long length;
- unsigned long vstart, vend;
+ long length = end - start;
int node;
- length = end - start;
- vstart = start + __IA64_UNCACHED_OFFSET;
- vend = end + __IA64_UNCACHED_OFFSET;
-
dprintk(KERN_ERR "uncached_build_memmap(%lx %lx)\n", start, end);
- memset((char *)vstart, 0, length);
+ memset((char *)start, 0, length);
- node = paddr_to_nid(start);
+ node = paddr_to_nid(start - __IA64_UNCACHED_OFFSET);
- for (; vstart < vend ; vstart += PAGE_SIZE) {
- dprintk(KERN_INFO "sticking %lx into the pool!\n", vstart);
- gen_pool_free(uncached_pool[node], vstart, PAGE_SIZE);
+ for (; start < end ; start += PAGE_SIZE) {
+ dprintk(KERN_INFO "sticking %lx into the pool!\n", start);
+ gen_pool_free(uncached_pool[node], start, PAGE_SIZE);
}
return 0;
diff --git a/include/asm-ia64/meminit.h b/include/asm-ia64/meminit.h
index 1590dc65b30b..90646632237c 100644
--- a/include/asm-ia64/meminit.h
+++ b/include/asm-ia64/meminit.h
@@ -16,10 +16,11 @@
* - initrd (optional)
* - command line string
* - kernel code & data
+ * - Kernel memory map built from EFI memory map
*
* More could be added if necessary
*/
-#define IA64_MAX_RSVD_REGIONS 5
+#define IA64_MAX_RSVD_REGIONS 6
struct rsvd_region {
unsigned long start; /* virtual address of beginning of element */
@@ -33,6 +34,7 @@ extern void find_memory (void);
extern void reserve_memory (void);
extern void find_initrd (void);
extern int filter_rsvd_memory (unsigned long start, unsigned long end, void *arg);
+extern void efi_memmap_init(unsigned long *, unsigned long *);
/*
* For rounding an address to the next IA64_GRANULE_SIZE or order
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