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authorArd Biesheuvel <ard.biesheuvel@linaro.org>2016-02-16 13:52:33 +0100
committerCatalin Marinas <catalin.marinas@arm.com>2016-02-18 18:15:39 +0000
commit369bc9abf22bf026e8645a4dd746b90649a2f6ee (patch)
tree26599512eae7696288b8b6fb31f9e77d65039593 /drivers/of
parent270522a04f7a9911983878fa37da467f9ff1c938 (diff)
of/fdt: factor out assignment of initrd_start/initrd_end
Since architectures may not yet have their linear mapping up and running when the initrd address is discovered from the DT, factor out the assignment of initrd_start and initrd_end, so that an architecture can override it and use the translation it needs. Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Diffstat (limited to 'drivers/of')
-rw-r--r--drivers/of/fdt.c14
1 files changed, 11 insertions, 3 deletions
diff --git a/drivers/of/fdt.c b/drivers/of/fdt.c
index 1f98156f8996..3e90bce70545 100644
--- a/drivers/of/fdt.c
+++ b/drivers/of/fdt.c
@@ -760,6 +760,16 @@ const void * __init of_flat_dt_match_machine(const void *default_match,
}
#ifdef CONFIG_BLK_DEV_INITRD
+#ifndef __early_init_dt_declare_initrd
+static void __early_init_dt_declare_initrd(unsigned long start,
+ unsigned long end)
+{
+ initrd_start = (unsigned long)__va(start);
+ initrd_end = (unsigned long)__va(end);
+ initrd_below_start_ok = 1;
+}
+#endif
+
/**
* early_init_dt_check_for_initrd - Decode initrd location from flat tree
* @node: reference to node containing initrd location ('chosen')
@@ -782,9 +792,7 @@ static void __init early_init_dt_check_for_initrd(unsigned long node)
return;
end = of_read_number(prop, len/4);
- initrd_start = (unsigned long)__va(start);
- initrd_end = (unsigned long)__va(end);
- initrd_below_start_ok = 1;
+ __early_init_dt_declare_initrd(start, end);
pr_debug("initrd_start=0x%llx initrd_end=0x%llx\n",
(unsigned long long)start, (unsigned long long)end);