示例#1
0
/* Only e800 has 128MB RAM */
void __init eseries_fixup(struct tag *tags, char **cmdline)
{
	if (machine_is_e800())
		memblock_add(0xa0000000, SZ_128M);
	else
		memblock_add(0xa0000000, SZ_64M);
}
示例#2
0
文件: corgi.c 项目: 020gzh/linux
static void __init fixup_corgi(struct tag *tags, char **cmdline)
{
	sharpsl_save_param();
	if (machine_is_corgi())
		memblock_add(0xa0000000, SZ_32M);
	else
		memblock_add(0xa0000000, SZ_64M);
}
示例#3
0
文件: core.c 项目: 0-T-0/ps4-linux
/*
 * Setup the memory banks.
 */
void realview_fixup(struct tag *tags, char **from)
{
	/*
	 * Most RealView platforms have 512MB contiguous RAM at 0x70000000.
	 * Half of this is mirrored at 0.
	 */
#ifdef CONFIG_REALVIEW_HIGH_PHYS_OFFSET
	memblock_add(0x70000000, SZ_512M);
#else
	memblock_add(0, SZ_256M);
#endif
}
示例#4
0
static void __init
fixup_edb7211(struct tag *tags, char **cmdline)
{
	/*
	 * Bank start addresses are not present in the information
	 * passed in from the boot loader.  We could potentially
	 * detect them, but instead we hard-code them.
	 *
	 * Banks sizes _are_ present in the param block, but we're
	 * not using that information yet.
	 */
	memblock_add(0xc0000000, SZ_8M);
	memblock_add(0xc1000000, SZ_8M);
}
示例#5
0
static void realview_pbx_fixup(struct tag *tags, char **from)
{
#ifdef CONFIG_SPARSEMEM
	/*
	 * Memory configuration with SPARSEMEM enabled on RealView PBX (see
	 * asm/mach/memory.h for more information).
	 */

	memblock_add(0, SZ_256M);
	memblock_add(0x20000000, SZ_512M);
	memblock_add(0x80000000, SZ_256M);
#else
	realview_fixup(tags, from);
#endif
}
void __init wii_memory_fixups(void)
{
	struct memblock_region *p = memblock.memory.regions;

	/*
	 * This is part of a workaround to allow the use of two
	 * discontinuous RAM ranges on the Wii, even if this is
	 * currently unsupported on 32-bit PowerPC Linux.
	 *
	 * We coalesce the two memory ranges of the Wii into a
	 * single range, then create a reservation for the "hole"
	 * between both ranges.
	 */

	BUG_ON(memblock.memory.cnt != 2);
	BUG_ON(!page_aligned(p[0].base) || !page_aligned(p[1].base));

	/* trim unaligned tail */
	memblock_remove(ALIGN(p[1].base + p[1].size, PAGE_SIZE),
			(phys_addr_t)ULLONG_MAX);

	/* determine hole, add & reserve them */
	wii_hole_start = ALIGN(p[0].base + p[0].size, PAGE_SIZE);
	wii_hole_size = p[1].base - wii_hole_start;
	memblock_add(wii_hole_start, wii_hole_size);
	memblock_reserve(wii_hole_start, wii_hole_size);

	BUG_ON(memblock.memory.cnt != 1);
	__memblock_dump_all();

	/* allow ioremapping the address space in the hole */
	__allow_ioremap_reserved = 1;
}
static int pseries_add_memory(struct device_node *np)
{
	const char *type;
	const unsigned int *regs;
	unsigned long base;
	unsigned int lmb_size;
	int ret = -EINVAL;

	/*
	 * Check to see if we are actually adding memory
	 */
	type = of_get_property(np, "device_type", NULL);
	if (type == NULL || strcmp(type, "memory") != 0)
		return 0;

	/*
	 * Find the base and size of the memblock
	 */
	regs = of_get_property(np, "reg", NULL);
	if (!regs)
		return ret;

	base = *(unsigned long *)regs;
	lmb_size = regs[3];

	/*
	 * Update memory region to represent the memory add
	 */
	ret = memblock_add(base, lmb_size);
	return (ret < 0) ? -EINVAL : 0;
}
static int pseries_drconf_memory(unsigned long *base, unsigned int action)
{
	struct device_node *np;
	const unsigned long *lmb_size;
	int rc;

	np = of_find_node_by_path("/ibm,dynamic-reconfiguration-memory");
	if (!np)
		return -EINVAL;

	lmb_size = of_get_property(np, "ibm,lmb-size", NULL);
	if (!lmb_size) {
		of_node_put(np);
		return -EINVAL;
	}

	if (action == PSERIES_DRCONF_MEM_ADD) {
		rc = memblock_add(*base, *lmb_size);
		rc = (rc < 0) ? -EINVAL : 0;
	} else if (action == PSERIES_DRCONF_MEM_REMOVE) {
		rc = pseries_remove_memblock(*base, *lmb_size);
	} else {
		rc = -EINVAL;
	}

	of_node_put(np);
	return rc;
}
示例#9
0
文件: init.c 项目: godknowspe/linux
static void __init parse_memmap_one(char *p)
{
	char *oldp;
	unsigned long start_at, mem_size;

	if (!p)
		return;

	oldp = p;
	mem_size = memparse(p, &p);
	if (p == oldp)
		return;

	switch (*p) {
	case '@':
		start_at = memparse(p + 1, &p);
		memblock_add(start_at, mem_size);
		break;

	case '$':
		start_at = memparse(p + 1, &p);
		memblock_reserve(start_at, mem_size);
		break;

	case 0:
		memblock_reserve(mem_size, -mem_size);
		break;

	default:
		pr_warn("Unrecognized memmap syntax: %s\n", p);
		break;
	}
}
static void realview_pb1176_fixup(struct tag *tags, char **from)
{
	/*
	 * RealView PB1176 only has 128MB of RAM mapped at 0.
	 */
	memblock_add(0, SZ_128M);
}
示例#11
0
文件: mcfmmu.c 项目: 0x7f454c46/linux
void __init cf_bootmem_alloc(void)
{
	unsigned long memstart;

	/* _rambase and _ramend will be naturally page aligned */
	m68k_memory[0].addr = _rambase;
	m68k_memory[0].size = _ramend - _rambase;

	memblock_add(m68k_memory[0].addr, m68k_memory[0].size);

	/* compute total pages in system */
	num_pages = PFN_DOWN(_ramend - _rambase);

	/* page numbers */
	memstart = PAGE_ALIGN(_ramstart);
	min_low_pfn = PFN_DOWN(_rambase);
	max_pfn = max_low_pfn = PFN_DOWN(_ramend);
	high_memory = (void *)_ramend;

	/* Reserve kernel text/data/bss */
	memblock_reserve(memstart, memstart - _rambase);

	m68k_virt_to_node_shift = fls(_ramend - 1) - 6;
	module_fixup(NULL, __start_fixup, __stop_fixup);

	/* setup node data */
	m68k_setup_node(0);
}
示例#12
0
文件: init.c 项目: 01org/prd
/*
 * First memory setup routine called from setup_arch()
 * 1. setup swapper's mm @init_mm
 * 2. Count the pages we have and setup bootmem allocator
 * 3. zone setup
 */
void __init setup_arch_memory(void)
{
	unsigned long zones_size[MAX_NR_ZONES];
	unsigned long end_mem = CONFIG_LINUX_LINK_BASE + arc_mem_sz;

	init_mm.start_code = (unsigned long)_text;
	init_mm.end_code = (unsigned long)_etext;
	init_mm.end_data = (unsigned long)_edata;
	init_mm.brk = (unsigned long)_end;

	/*
	 * We do it here, so that memory is correctly instantiated
	 * even if "mem=xxx" cmline over-ride is given and/or
	 * DT has memory node. Each causes an update to @arc_mem_sz
	 * and we finally add memory one here
	 */
	memblock_add(CONFIG_LINUX_LINK_BASE, arc_mem_sz);

	/*------------- externs in mm need setting up ---------------*/

	/* first page of system - kernel .vector starts here */
	min_low_pfn = ARCH_PFN_OFFSET;

	/* Last usable page of low mem (no HIGHMEM yet for ARC port) */
	max_low_pfn = max_pfn = PFN_DOWN(end_mem);

	max_mapnr = max_low_pfn - min_low_pfn;

	/*------------- reserve kernel image -----------------------*/
	memblock_reserve(CONFIG_LINUX_LINK_BASE,
			 __pa(_end) - CONFIG_LINUX_LINK_BASE);

#ifdef CONFIG_BLK_DEV_INITRD
	/*------------- reserve initrd image -----------------------*/
	if (initrd_start)
		memblock_reserve(__pa(initrd_start), initrd_end - initrd_start);
#endif

	memblock_dump_all();

	/*-------------- node setup --------------------------------*/
	memset(zones_size, 0, sizeof(zones_size));
	zones_size[ZONE_NORMAL] = max_mapnr;

	/*
	 * We can't use the helper free_area_init(zones[]) because it uses
	 * PAGE_OFFSET to compute the @min_low_pfn which would be wrong
	 * when our kernel doesn't start at PAGE_OFFSET, i.e.
	 * PAGE_OFFSET != CONFIG_LINUX_LINK_BASE
	 */
	free_area_init_node(0,			/* node-id */
			    zones_size,		/* num pages per zone */
			    min_low_pfn,	/* first pfn of node */
			    NULL);		/* NO holes */

	high_memory = (void *)end_mem;
}
示例#13
0
static int __init parse_tag_mem(const bp_tag_t *tag)
{
	struct bp_meminfo *mi = (struct bp_meminfo *)(tag->data);

	if (mi->type != MEMORY_TYPE_CONVENTIONAL)
		return -1;

	return memblock_add(mi->start, mi->end - mi->start);
}
示例#14
0
static int pseries_update_drconf_memory(struct of_reconfig_data *pr)
{
	struct of_drconf_cell *new_drmem, *old_drmem;
	unsigned long memblock_size;
	u32 entries;
	__be32 *p;
	int i, rc = -EINVAL;

	if (rtas_hp_event)
		return 0;

	memblock_size = pseries_memory_block_size();
	if (!memblock_size)
		return -EINVAL;

	p = (__be32 *) pr->old_prop->value;
	if (!p)
		return -EINVAL;

	/* The first int of the property is the number of lmb's described
	 * by the property. This is followed by an array of of_drconf_cell
	 * entries. Get the number of entries and skip to the array of
	 * of_drconf_cell's.
	 */
	entries = be32_to_cpu(*p++);
	old_drmem = (struct of_drconf_cell *)p;

	p = (__be32 *)pr->prop->value;
	p++;
	new_drmem = (struct of_drconf_cell *)p;

	for (i = 0; i < entries; i++) {
		if ((be32_to_cpu(old_drmem[i].flags) & DRCONF_MEM_ASSIGNED) &&
		    (!(be32_to_cpu(new_drmem[i].flags) & DRCONF_MEM_ASSIGNED))) {
			rc = pseries_remove_memblock(
				be64_to_cpu(old_drmem[i].base_addr),
						     memblock_size);
			break;
		} else if ((!(be32_to_cpu(old_drmem[i].flags) &
			    DRCONF_MEM_ASSIGNED)) &&
			    (be32_to_cpu(new_drmem[i].flags) &
			    DRCONF_MEM_ASSIGNED)) {
			rc = memblock_add(be64_to_cpu(old_drmem[i].base_addr),
					  memblock_size);
			rc = (rc < 0) ? -EINVAL : 0;
			break;
		}
	}
	return rc;
}
示例#15
0
文件: numa.c 项目: 03199618/linux
/*
 * 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_bootmem_node(int nid, unsigned long start, unsigned long end)
{
	unsigned long bootmap_pages;
	unsigned long start_pfn, end_pfn;
	unsigned long bootmem_paddr;

	/* Don't allow bogus node assignment */
	BUG_ON(nid > MAX_NUMNODES || nid <= 0);

	start_pfn = start >> PAGE_SHIFT;
	end_pfn = end >> PAGE_SHIFT;

	pmb_bolt_mapping((unsigned long)__va(start), start, end - start,
			 PAGE_KERNEL);

	memblock_add(start, end - start);

	__add_active_range(nid, start_pfn, end_pfn);

	/* Node-local pgdat */
	NODE_DATA(nid) = __va(memblock_alloc_base(sizeof(struct pglist_data),
					     SMP_CACHE_BYTES, end));
	memset(NODE_DATA(nid), 0, sizeof(struct pglist_data));

	NODE_DATA(nid)->bdata = &bootmem_node_data[nid];
	NODE_DATA(nid)->node_start_pfn = start_pfn;
	NODE_DATA(nid)->node_spanned_pages = end_pfn - start_pfn;

	/* Node-local bootmap */
	bootmap_pages = bootmem_bootmap_pages(end_pfn - start_pfn);
	bootmem_paddr = memblock_alloc_base(bootmap_pages << PAGE_SHIFT,
				       PAGE_SIZE, end);
	init_bootmem_node(NODE_DATA(nid), bootmem_paddr >> PAGE_SHIFT,
			  start_pfn, end_pfn);

	free_bootmem_with_active_regions(nid, end_pfn);

	/* Reserve the pgdat and bootmap space with the bootmem allocator */
	reserve_bootmem_node(NODE_DATA(nid), start_pfn << PAGE_SHIFT,
			     sizeof(struct pglist_data), BOOTMEM_DEFAULT);
	reserve_bootmem_node(NODE_DATA(nid), bootmem_paddr,
			     bootmap_pages << PAGE_SHIFT, BOOTMEM_DEFAULT);

	/* It's up */
	node_set_online(nid);

	/* Kick sparsemem */
	sparse_memory_present_with_active_regions(nid);
}
void __init early_init_dt_add_memory_arch(u64 base, u64 size)
{
	base &= PAGE_MASK;
	size &= PAGE_MASK;
	if (base + size < PHYS_OFFSET) {
		pr_warning("Ignoring memory block 0x%llx - 0x%llx\n",
			   base, base + size);
		return;
	}
	if (base < PHYS_OFFSET) {
		pr_warning("Ignoring memory range 0x%llx - 0x%llx\n",
			   base, PHYS_OFFSET);
		size -= PHYS_OFFSET - base;
		base = PHYS_OFFSET;
	}
	memblock_add(base, size);
}
static int pseries_update_drconf_memory(struct of_prop_reconfig *pr)
{
	struct of_drconf_cell *new_drmem, *old_drmem;
	unsigned long memblock_size;
	u32 entries;
	u32 *p;
	int i, rc = -EINVAL;

	memblock_size = get_memblock_size();
	if (!memblock_size)
		return -EINVAL;

	p = (u32 *)of_get_property(pr->dn, "ibm,dynamic-memory", NULL);
	if (!p)
		return -EINVAL;

	/* The first int of the property is the number of lmb's described
	 * by the property. This is followed by an array of of_drconf_cell
	 * entries. Get the niumber of entries and skip to the array of
	 * of_drconf_cell's.
	 */
	entries = *p++;
	old_drmem = (struct of_drconf_cell *)p;

	p = (u32 *)pr->prop->value;
	p++;
	new_drmem = (struct of_drconf_cell *)p;

	for (i = 0; i < entries; i++) {
		if ((old_drmem[i].flags & DRCONF_MEM_ASSIGNED) &&
		    (!(new_drmem[i].flags & DRCONF_MEM_ASSIGNED))) {
			rc = pseries_remove_memblock(old_drmem[i].base_addr,
						     memblock_size);
			break;
		} else if ((!(old_drmem[i].flags & DRCONF_MEM_ASSIGNED)) &&
			   (new_drmem[i].flags & DRCONF_MEM_ASSIGNED)) {
			rc = memblock_add(old_drmem[i].base_addr,
					  memblock_size);
			rc = (rc < 0) ? -EINVAL : 0;
			break;
		}
	}

	return rc;
}
示例#18
0
void __init __weak early_init_dt_add_memory_arch(u64 base, u64 size)
{
	const u64 phys_offset = __pa(PAGE_OFFSET);
	base &= PAGE_MASK;
	size &= PAGE_MASK;
	if (base + size < phys_offset) {
		pr_warning("Ignoring memory block 0x%llx - 0x%llx\n",
			   base, base + size);
		return;
	}
	if (base < phys_offset) {
		pr_warning("Ignoring memory range 0x%llx - 0x%llx\n",
			   base, phys_offset);
		size -= phys_offset - base;
		base = phys_offset;
	}
	memblock_add(base, size);
}
示例#19
0
void __init bootmem_init(void)
{
	struct memblock_region *reg;
	unsigned long bootmap_size;
	unsigned long free_pfn, end_pfn, start_pfn;

	init_mm.start_code = (unsigned long)_stext;
	init_mm.end_code = (unsigned long)_etext;
	init_mm.end_data = (unsigned long)_edata;
	init_mm.brk = (unsigned long)_end;

	memblock_init();
	memblock_add(memory_start, memory_end);

	if(((unsigned long)__pa(_end) < memory_start) || ((unsigned long)__pa(_end) > memory_end))
		printk("BUG: your kernel is not located in the ddr sdram");

	start_pfn = PFN_UP(memory_start);
	free_pfn = PFN_UP(__pa((unsigned long)_end));
	end_pfn = PFN_DOWN(memory_end);

	//memblock_reserve(PFN_PHYS(start_pfn), PFN_PHYS(free_pfn - start_pfn));
	memblock_reserve(__pa(_stext), _end - _stext);

#ifdef CONFIG_BLK_DEV_INITRD
	if (initrd_start && initrd_end && initrd_start < initrd_end) {
		memblock_reserve(initrd_start, initrd_end - initrd_start);
	}
#endif

	bootmap_size = init_bootmem(free_pfn, end_pfn);
	memblock_reserve(PFN_PHYS(free_pfn), bootmap_size);

	free_bootmem(PFN_PHYS(free_pfn), PFN_PHYS(end_pfn - free_pfn));

	for_each_memblock(reserved, reg)
		reserve_bootmem(reg->base, reg->size, BOOTMEM_DEFAULT);

	memory_start += PAGE_OFFSET;
	memory_end += PAGE_OFFSET;

	memblock_analyze();
	memblock_dump_all();
}
示例#20
0
/**
 * omap_ram_console_register() - device_initcall to register ramconsole device
 */
static int __init omap_ram_console_register(void)
{
	int ret;

	if (!omap_ramconsole_inited)
		return -ENODEV;

	ret = platform_device_register(&ram_console_device);
	if (ret) {
		pr_err("%s: unable to register ram console device:"
			"start=0x%08x, end=0x%08x, ret=%d\n",
			__func__, (u32)ram_console_resources[0].start,
			(u32)ram_console_resources[0].end, ret);
		memblock_add(ram_console_resources[0].start,
			(ram_console_resources[0].end -
			 ram_console_resources[0].start + 1));
	}

	return ret;
}
示例#21
0
static int pseries_drconf_memory(unsigned long *base, unsigned int action)
{
	unsigned long memblock_size;
	int rc;

	memblock_size = get_memblock_size();
	if (!memblock_size)
		return -EINVAL;

	if (action == PSERIES_DRCONF_MEM_ADD) {
		rc = memblock_add(*base, memblock_size);
		rc = (rc < 0) ? -EINVAL : 0;
	} else if (action == PSERIES_DRCONF_MEM_REMOVE) {
		rc = pseries_remove_memblock(*base, memblock_size);
	} else {
		rc = -EINVAL;
	}

	return rc;
}
示例#22
0
文件: e820.c 项目: lastweek/Sandix
void __init memblock_x86_fill(void)
{
	int i;
	unsigned long long end;

	for (i = 0; i < e820.nr_entries; i++) {
		struct e820entry *ei = &e820.map[i];

		end = ei->addr + ei->size;
		/* this will filter > 4GB DRAM in 32-bit NONPAE kernel */
		if (end != (resource_size_t)end)
			continue;

		if (ei->type != E820_RAM)
			continue;

		memblock_add(ei->addr, ei->size);
	}

	/* throw away partial pages */
	memblock_trim_memory(PAGE_SIZE);
}
示例#23
0
static int pseries_add_memory(struct device_node *np)
{
	const char *type;
	const unsigned int *regs;
	unsigned long base;
	unsigned int lmb_size;
	int ret = -EINVAL;

	type = of_get_property(np, "device_type", NULL);
	if (type == NULL || strcmp(type, "memory") != 0)
		return 0;

	regs = of_get_property(np, "reg", NULL);
	if (!regs)
		return ret;

	base = *(unsigned long *)regs;
	lmb_size = regs[3];

	ret = memblock_add(base, lmb_size);
	return (ret < 0) ? -EINVAL : 0;
}
示例#24
0
static int dlpar_add_lmb_memory(struct of_drconf_cell *lmb)
{
	struct memory_block *mem_block;
	unsigned long block_sz;
	int nid, rc;

	block_sz = memory_block_size_bytes();

	/* Find the node id for this address */
	nid = memory_add_physaddr_to_nid(lmb->base_addr);

	/* Add the memory */
	rc = add_memory(nid, lmb->base_addr, block_sz);
	if (rc)
		return rc;

	/* Register this block of memory */
	rc = memblock_add(lmb->base_addr, block_sz);
	if (rc) {
		remove_memory(nid, lmb->base_addr, block_sz);
		return rc;
	}

	mem_block = lmb_to_memblock(lmb);
	if (!mem_block) {
		remove_memory(nid, lmb->base_addr, block_sz);
		return -EINVAL;
	}

	rc = device_online(&mem_block->dev);
	put_device(&mem_block->dev);
	if (rc) {
		remove_memory(nid, lmb->base_addr, block_sz);
		return rc;
	}

	lmb->flags |= DRCONF_MEM_ASSIGNED;
	return 0;
}
示例#25
0
void __init generic_mem_init(void)
{
	memblock_add(__MEMORY_START, __MEMORY_SIZE);
}
示例#26
0
文件: prom.c 项目: ANFS/ANFS-kernel
void __init early_init_dt_add_memory_arch(u64 base, u64 size)
{
	memblock_add(base, size);
}
示例#27
0
文件: prom.c 项目: 03199618/linux
void __init early_init_dt_add_memory_arch(u64 base, u64 size)
{
	size &= PAGE_MASK;
	memblock_add(base, size);
}
示例#28
0
static void __init fixup_poodle(struct tag *tags, char **cmdline)
{
	sharpsl_save_param();
	memblock_add(0xa0000000, SZ_32M);
}
示例#29
0
文件: init.c 项目: E-LLP/linux
/*
 * First memory setup routine called from setup_arch()
 * 1. setup swapper's mm @init_mm
 * 2. Count the pages we have and setup bootmem allocator
 * 3. zone setup
 */
void __init setup_arch_memory(void)
{
	unsigned long zones_size[MAX_NR_ZONES];
	unsigned long zones_holes[MAX_NR_ZONES];

	init_mm.start_code = (unsigned long)_text;
	init_mm.end_code = (unsigned long)_etext;
	init_mm.end_data = (unsigned long)_edata;
	init_mm.brk = (unsigned long)_end;

	/* first page of system - kernel .vector starts here */
	min_low_pfn = ARCH_PFN_OFFSET;

	/* Last usable page of low mem */
	max_low_pfn = max_pfn = PFN_DOWN(low_mem_start + low_mem_sz);

#ifdef CONFIG_HIGHMEM
	min_high_pfn = PFN_DOWN(high_mem_start);
	max_pfn = PFN_DOWN(high_mem_start + high_mem_sz);
#endif

	max_mapnr = max_pfn - min_low_pfn;

	/*------------- bootmem allocator setup -----------------------*/

	/*
	 * seed the bootmem allocator after any DT memory node parsing or
	 * "mem=xxx" cmdline overrides have potentially updated @arc_mem_sz
	 *
	 * Only low mem is added, otherwise we have crashes when allocating
	 * mem_map[] itself. NO_BOOTMEM allocates mem_map[] at the end of
	 * avail memory, ending in highmem with a > 32-bit address. However
	 * it then tries to memset it with a truncaed 32-bit handle, causing
	 * the crash
	 */

	memblock_add(low_mem_start, low_mem_sz);
	memblock_reserve(low_mem_start, __pa(_end) - low_mem_start);

#ifdef CONFIG_BLK_DEV_INITRD
	if (initrd_start)
		memblock_reserve(__pa(initrd_start), initrd_end - initrd_start);
#endif

	memblock_dump_all();

	/*----------------- node/zones setup --------------------------*/
	memset(zones_size, 0, sizeof(zones_size));
	memset(zones_holes, 0, sizeof(zones_holes));

	zones_size[ZONE_NORMAL] = max_low_pfn - min_low_pfn;
	zones_holes[ZONE_NORMAL] = 0;

#ifdef CONFIG_HIGHMEM
	zones_size[ZONE_HIGHMEM] = max_pfn - max_low_pfn;

	/* This handles the peripheral address space hole */
	zones_holes[ZONE_HIGHMEM] = min_high_pfn - max_low_pfn;
#endif

	/*
	 * We can't use the helper free_area_init(zones[]) because it uses
	 * PAGE_OFFSET to compute the @min_low_pfn which would be wrong
	 * when our kernel doesn't start at PAGE_OFFSET, i.e.
	 * PAGE_OFFSET != CONFIG_LINUX_LINK_BASE
	 */
	free_area_init_node(0,			/* node-id */
			    zones_size,		/* num pages per zone */
			    min_low_pfn,	/* first pfn of node */
			    zones_holes);	/* holes */

#ifdef CONFIG_HIGHMEM
	high_memory = (void *)(min_high_pfn << PAGE_SHIFT);
	kmap_init();
#endif
}
示例#30
0
文件: spitz.c 项目: Artox/linux
static void __init spitz_fixup(struct tag *tags, char **cmdline)
{
	sharpsl_save_param();
	memblock_add(0xa0000000, SZ_64M);
}