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authorKevin Hao <haokexin@gmail.com>2013-12-24 11:12:08 +0400
committerScott Wood <scottwood@freescale.com>2014-01-10 03:52:17 +0400
commitb27652dd2174df1a7e0a7c5f00d1c8e3ed9287a7 (patch)
treea93bf5700c442d52a2ed86de8d2203f05e78cf23 /include/linux/of_fdt.h
parent78a235efdc42ff363de81fdbc171385e8b86b69b (diff)
downloadlinux-b27652dd2174df1a7e0a7c5f00d1c8e3ed9287a7.tar.xz
powerpc: introduce early_get_first_memblock_info
For a relocatable kernel since it can be loaded at any place, there is no any relation between the kernel start addr and the memstart_addr. So we can't calculate the memstart_addr from kernel start addr. And also we can't wait to do the relocation after we get the real memstart_addr from device tree because it is so late. So introduce a new function we can use to get the first memblock address and size in a very early stage (before machine_init). Signed-off-by: Kevin Hao <haokexin@gmail.com> Signed-off-by: Scott Wood <scottwood@freescale.com>
Diffstat (limited to 'include/linux/of_fdt.h')
-rw-r--r--include/linux/of_fdt.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/of_fdt.h b/include/linux/of_fdt.h
index 0beaee9dac1f..2b77058a7335 100644
--- a/include/linux/of_fdt.h
+++ b/include/linux/of_fdt.h
@@ -116,6 +116,7 @@ extern const void *of_flat_dt_match_machine(const void *default_match,
extern void unflatten_device_tree(void);
extern void unflatten_and_copy_device_tree(void);
extern void early_init_devtree(void *);
+extern void early_get_first_memblock_info(void *, phys_addr_t *);
#else /* CONFIG_OF_FLATTREE */
static inline const char *of_flat_dt_get_machine_name(void) { return NULL; }
static inline void unflatten_device_tree(void) {}