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authorRob Herring <robh@kernel.org>2014-04-02 05:46:48 +0200
committerRob Herring <robh@kernel.org>2014-04-30 07:59:17 +0200
commitd1552ce449eb0a8d2f0bd6599da3a8a3d7f77a84 (patch)
tree10e5d7505664ee5270eb8e0b895099decea030de /drivers/of/fdt.c
parentof/fdt: create common debugfs (diff)
downloadlinux-d1552ce449eb0a8d2f0bd6599da3a8a3d7f77a84.tar.xz
linux-d1552ce449eb0a8d2f0bd6599da3a8a3d7f77a84.zip
of/fdt: move memreserve and dtb memory reservations into core
Move the /memreserve/ processing and dtb memory reservations into early_init_fdt_scan_reserved_mem. This converts arm, arm64, and powerpc as they are the only users of early_init_fdt_scan_reserved_mem. memblock_reserve is safe to call on the same region twice, so the reservation check for the dtb in powerpc 32-bit reservations is safe to remove. Signed-off-by: Rob Herring <robh@kernel.org> Tested-by: Michal Simek <michal.simek@xilinx.com> Cc: Russell King <linux@arm.linux.org.uk> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Will Deacon <will.deacon@arm.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Tested-by: Grant Likely <grant.likely@linaro.org> Tested-by: Stephen Chivers <schivers@csc.com>
Diffstat (limited to 'drivers/of/fdt.c')
-rw-r--r--drivers/of/fdt.c16
1 files changed, 16 insertions, 0 deletions
diff --git a/drivers/of/fdt.c b/drivers/of/fdt.c
index 4129f7442244..051be4ca25b9 100644
--- a/drivers/of/fdt.c
+++ b/drivers/of/fdt.c
@@ -492,9 +492,25 @@ static int __init __fdt_scan_reserved_mem(unsigned long node, const char *uname,
*/
void __init early_init_fdt_scan_reserved_mem(void)
{
+ int n;
+ u64 base, size;
+
if (!initial_boot_params)
return;
+ /* Reserve the dtb region */
+ early_init_dt_reserve_memory_arch(__pa(initial_boot_params),
+ fdt_totalsize(initial_boot_params),
+ 0);
+
+ /* Process header /memreserve/ fields */
+ for (n = 0; ; n++) {
+ fdt_get_mem_rsv(initial_boot_params, n, &base, &size);
+ if (!size)
+ break;
+ early_init_dt_reserve_memory_arch(base, size, 0);
+ }
+
of_scan_flat_dt(__fdt_scan_reserved_mem, NULL);
fdt_init_reserved_mem();
}