-/* $Id: init.c,v 1.209 2002/02/09 19:49:31 davem Exp $
+/*
* arch/sparc64/mm/init.c
*
* Copyright (C) 1996-1999 David S. Miller (davem@caip.rutgers.edu)
extern unsigned int sparc_ramdisk_size;
struct page *mem_map_zero __read_mostly;
+EXPORT_SYMBOL(mem_map_zero);
unsigned int sparc64_highest_unlocked_tlb_ent __read_mostly;
static void __init inherit_prom_mappings(void)
{
- read_obp_translations();
-
/* Now fixup OBP's idea about where we really are mapped. */
printk("Remapping the kernel... ");
remap_kernel();
initrd_start = ramdisk_image;
initrd_end = ramdisk_image + sparc_ramdisk_size;
- lmb_reserve(initrd_start, initrd_end);
+ lmb_reserve(initrd_start, sparc_ramdisk_size);
+
+ initrd_start += PAGE_OFFSET;
+ initrd_end += PAGE_OFFSET;
}
#endif
}
cpumask_t numa_cpumask_lookup_table[MAX_NUMNODES];
#ifdef CONFIG_NEED_MULTIPLE_NODES
-static bootmem_data_t plat_node_bdata[MAX_NUMNODES];
struct mdesc_mblock {
u64 base;
NODE_DATA(nid) = __va(paddr);
memset(NODE_DATA(nid), 0, sizeof(struct pglist_data));
- NODE_DATA(nid)->bdata = &plat_node_bdata[nid];
+ NODE_DATA(nid)->bdata = &bootmem_node_data[nid];
#endif
p = NODE_DATA(nid);
* functions like clear_dcache_dirty_cpu use the cpu mask
* in 13-bit signed-immediate instruction fields.
*/
- BUILD_BUG_ON(FLAGS_RESERVED != 32);
+
+ /*
+ * Page flags must not reach into upper 32 bits that are used
+ * for the cpu number
+ */
+ BUILD_BUG_ON(NR_PAGEFLAGS > 32);
+
+ /*
+ * The bit fields placed in the high range must not reach below
+ * the 32 bit boundary. Otherwise we cannot place the cpu field
+ * at the 32 bit boundary.
+ */
BUILD_BUG_ON(SECTIONS_WIDTH + NODES_WIDTH + ZONES_WIDTH +
- ilog2(roundup_pow_of_two(NR_CPUS)) > FLAGS_RESERVED);
+ ilog2(roundup_pow_of_two(NR_CPUS)) > 32);
+
BUILD_BUG_ON(NR_CPUS > 4096);
kern_base = (prom_boot_mapping_phys_low >> 22UL) << 22UL;
lmb_init();
- /* Find available physical memory... */
+ /* Find available physical memory...
+ *
+ * Read it twice in order to work around a bug in openfirmware.
+ * The call to grab this table itself can cause openfirmware to
+ * allocate memory, which in turn can take away some space from
+ * the list of available memory. Reading it twice makes sure
+ * we really do get the final value.
+ */
+ read_obp_translations();
+ read_obp_memory("reg", &pall[0], &pall_ents);
+ read_obp_memory("available", &pavail[0], &pavail_ents);
read_obp_memory("available", &pavail[0], &pavail_ents);
phys_base = 0xffffffffffffffffUL;
inherit_prom_mappings();
- read_obp_memory("reg", &pall[0], &pall_ents);
-
init_kpte_bitmap();
/* Ok, we can use our TLB miss and window trap handlers safely. */
__asm__ __volatile__("wrpr %0, 0, %%pstate"
: : "r" (pstate));
}
-
-#ifdef CONFIG_MEMORY_HOTPLUG
-
-void online_page(struct page *page)
-{
- ClearPageReserved(page);
- init_page_count(page);
- __free_page(page);
- totalram_pages++;
- num_physpages++;
-}
-
-#endif /* CONFIG_MEMORY_HOTPLUG */