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authorRob Herring <rob.herring@calxeda.com>2013-09-24 22:20:01 -0500
committerRob Herring <rob.herring@calxeda.com>2013-10-09 11:38:19 -0500
commit068f6310b965d67d57f89ebf4c539e5933754366 (patch)
tree7f149f244a5d6451d4f4b4122e2a7fefe06ccf66 /drivers/of
parent7745fc1fec6ec9556e4cc36c21b0e02589078902 (diff)
downloadlinux-068f6310b965d67d57f89ebf4c539e5933754366.tar.bz2
of: create default early_init_dt_add_memory_arch
Create a weak version of early_init_dt_add_memory_arch which uses memblock. This will unify all architectures except ones with custom memory bank structs. Signed-off-by: Rob Herring <rob.herring@calxeda.com> Acked-by: Catalin Marinas <catalin.marinas@arm.com> Cc: Will Deacon <will.deacon@arm.com> Cc: Michal Simek <monstr@monstr.eu> Cc: Jonas Bonn <jonas@southpole.se> Acked-by: Grant Likely <grant.likely@linaro.org> Cc: linux-arm-kernel@lists.infradead.org Cc: microblaze-uclinux@itee.uq.edu.au Cc: linux@lists.openrisc.net Cc: devicetree@vger.kernel.org
Diffstat (limited to 'drivers/of')
-rw-r--r--drivers/of/fdt.c19
1 files changed, 19 insertions, 0 deletions
diff --git a/drivers/of/fdt.c b/drivers/of/fdt.c
index bfbfda543768..5bc55b6e2b41 100644
--- a/drivers/of/fdt.c
+++ b/drivers/of/fdt.c
@@ -775,6 +775,25 @@ int __init early_init_dt_scan_chosen(unsigned long node, const char *uname,
}
#ifdef CONFIG_HAVE_MEMBLOCK
+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);
+}
+
/*
* called from unflatten_device_tree() to bootstrap devicetree itself
* Architectures can override this definition if memblock isn't used