void __init initmem_init(void)
{
x86_numa_init();
#ifdef CONFIG_HIGHMEM
highstart_pfn = highend_pfn = max_pfn;
if (max_pfn > max_low_pfn)
highstart_pfn = max_low_pfn;
printk(KERN_NOTICE "%ldMB HIGHMEM available.\n",
pages_to_mb(highend_pfn - highstart_pfn));
high_memory = (void *) __va(highstart_pfn * PAGE_SIZE - 1) + 1;
#else
high_memory = (void *) __va(max_low_pfn * PAGE_SIZE - 1) + 1;
#endif
printk(KERN_NOTICE "%ldMB LOWMEM available.\n",
pages_to_mb(max_low_pfn));
printk(KERN_DEBUG "max_low_pfn = %lx, highstart_pfn = %lx\n",
max_low_pfn, highstart_pfn);
printk(KERN_DEBUG "Low memory ends at vaddr %08lx\n",
(ulong) pfn_to_kaddr(max_low_pfn));
printk(KERN_DEBUG "High memory starts at vaddr %08lx\n",
(ulong) pfn_to_kaddr(highstart_pfn));
__vmalloc_start_set = true;
setup_bootmem_allocator();
}
static void __init setup_memory(void)
{
unsigned long start_pfn;
/*
* Partially used pages are not usable - thus
* we are rounding upwards:
*/
start_pfn = PFN_UP(__pa(_end));
setup_bootmem_allocator(start_pfn);
}
/*
* On SH machines the conventional approach is to stash system RAM
* in node 0, and other memory blocks in to node 1 and up, ordered by
* latency. Each node's pgdat is node-local at the beginning of the node,
* immediately followed by the node mem map.
*/
void __init setup_memory(void)
{
unsigned long free_pfn = PFN_UP(__pa(_end));
/*
* Node 0 sets up its pgdat at the first available pfn,
* and bumps it up before setting up the bootmem allocator.
*/
NODE_DATA(0) = pfn_to_kaddr(free_pfn);
memset(NODE_DATA(0), 0, sizeof(struct pglist_data));
free_pfn += PFN_UP(sizeof(struct pglist_data));
NODE_DATA(0)->bdata = &bootmem_node_data[0];
/* Set up node 0 */
setup_bootmem_allocator(free_pfn);
/* Give the platforms a chance to hook up their nodes */
plat_mem_setup();
}
/*
* On SH machines the conventional approach is to stash system RAM
* in node 0, and other memory blocks in to node 1 and up, ordered by
* latency. Each node's pgdat is node-local at the beginning of the node,
* immediately followed by the node mem map.
*/
void __init setup_memory(void)
{
unsigned long free_pfn = PFN_UP(__pa(_end));
u64 base = min_low_pfn << PAGE_SHIFT;
u64 size = (max_low_pfn << PAGE_SHIFT) - base;
lmb_add(base, size);
/* Reserve the LMB regions used by the kernel, initrd, etc.. */
lmb_reserve(__MEMORY_START + CONFIG_ZERO_PAGE_OFFSET,
(PFN_PHYS(free_pfn) + PAGE_SIZE - 1) -
(__MEMORY_START + CONFIG_ZERO_PAGE_OFFSET));
/*
* Reserve physical pages below CONFIG_ZERO_PAGE_OFFSET.
*/
if (CONFIG_ZERO_PAGE_OFFSET != 0)
lmb_reserve(__MEMORY_START, CONFIG_ZERO_PAGE_OFFSET);
lmb_analyze();
lmb_dump_all();
/*
* Node 0 sets up its pgdat at the first available pfn,
* and bumps it up before setting up the bootmem allocator.
*/
NODE_DATA(0) = pfn_to_kaddr(free_pfn);
memset(NODE_DATA(0), 0, sizeof(struct pglist_data));
free_pfn += PFN_UP(sizeof(struct pglist_data));
NODE_DATA(0)->bdata = &bootmem_node_data[0];
/* Set up node 0 */
setup_bootmem_allocator(free_pfn);
/* Give the platforms a chance to hook up their nodes */
plat_mem_setup();
}
