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authorLinus Torvalds <torvalds@linux-foundation.org>2014-06-04 10:02:38 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2014-06-04 10:02:38 -0700
commitd27050641e9bc056446deb0814e7ba1aa7911f5a (patch)
tree160f46d9a6df3d7234c71a9fbaa31ebcf89c04d0 /arch/x86/kernel/devicetree.c
parentb77279bc2e81545b20824da701b349272a78e4e7 (diff)
parent43cb43678705e39b175b325f17938295996aefc7 (diff)
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Merge tag 'devicetree-for-3.16' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux into next
Pull DeviceTree updates from Rob Herring: - Another round of clean-up of FDT related code in architecture code. This removes knowledge of internal FDT details from most architectures except powerpc. - Conversion of kernel's custom FDT parsing code to use libfdt. - DT based initialization for generic serial earlycon. The introduction of generic serial earlycon support went in through the tty tree. - Improve the platform device naming for DT probed devices to ensure unique naming and use parent names instead of a global index. - Fix a race condition in of_update_property. - Unify the various linker section OF match tables and fix several function prototype errors. - Update platform_get_irq_byname to work in deferred probe cases. - 2 binding doc updates * tag 'devicetree-for-3.16' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: (58 commits) of: handle NULL node in next_child iterators of/irq: provide more wrappers for !CONFIG_OF devicetree: bindings: Document micrel vendor prefix dt: bindings: dwc2: fix required value for the phy-names property of_pci_irq: kill useless variable in of_irq_parse_pci() of/irq: do irq resolution in platform_get_irq_byname() of: Add a testcase for of_find_node_by_path() of: Make of_find_node_by_path() handle /aliases of: Create unlocked version of for_each_child_of_node() lib: add glibc style strchrnul() variant of: Handle memory@0 node on PPC32 only pci/of: Remove dead code of: fix race between search and remove in of_update_property() of: Use NULL for pointers of: Stop naming platform_device using dcr address of: Ensure unique names without sacrificing determinism tty/serial: pl011: add DT based earlycon support of/fdt: add FDT serial scanning for earlycon of/fdt: add FDT address translation support serial: earlycon: add DT support ...
Diffstat (limited to 'arch/x86/kernel/devicetree.c')
-rw-r--r--arch/x86/kernel/devicetree.c12
1 files changed, 5 insertions, 7 deletions
diff --git a/arch/x86/kernel/devicetree.c b/arch/x86/kernel/devicetree.c
index d35078ea1446..7db54b5d5f86 100644
--- a/arch/x86/kernel/devicetree.c
+++ b/arch/x86/kernel/devicetree.c
@@ -206,23 +206,21 @@ static void __init dtb_apic_setup(void)
static void __init x86_flattree_get_config(void)
{
u32 size, map_len;
- struct boot_param_header *dt;
+ void *dt;
if (!initial_dtb)
return;
- map_len = max(PAGE_SIZE - (initial_dtb & ~PAGE_MASK),
- (u64)sizeof(struct boot_param_header));
+ map_len = max(PAGE_SIZE - (initial_dtb & ~PAGE_MASK), (u64)128);
- dt = early_memremap(initial_dtb, map_len);
- size = be32_to_cpu(dt->totalsize);
+ initial_boot_params = dt = early_memremap(initial_dtb, map_len);
+ size = of_get_flat_dt_size();
if (map_len < size) {
early_iounmap(dt, map_len);
- dt = early_memremap(initial_dtb, size);
+ initial_boot_params = dt = early_memremap(initial_dtb, size);
map_len = size;
}
- initial_boot_params = dt;
unflatten_and_copy_device_tree();
early_iounmap(dt, map_len);
}