fmem: reserve memory for fmem
Fmem will use a block of contiguous memory at the
end of the memory bank with the greatest physical address.
Change-Id: I74d93f356e1e24b76e7b8f3432c3b021503fd387
Signed-off-by: Larry Bassel <lbassel@codeaurora.org>
diff --git a/arch/arm/mach-msm/memory.c b/arch/arm/mach-msm/memory.c
index 31fbd43..33db3fa 100644
--- a/arch/arm/mach-msm/memory.c
+++ b/arch/arm/mach-msm/memory.c
@@ -304,6 +304,24 @@
}
}
+unsigned long __init reserve_memory_for_fmem(unsigned long fmem_size)
+{
+ struct membank *mb;
+ int ret;
+ unsigned long fmem_phys;
+
+ if (!fmem_size)
+ return 0;
+
+ mb = &meminfo.bank[meminfo.nr_banks - 1];
+ fmem_phys = mb->start + (mb->size - fmem_size);
+ ret = memblock_remove(fmem_phys, fmem_size);
+ BUG_ON(ret);
+
+ pr_info("fmem start %lx size %lx\n", fmem_phys, fmem_size);
+ return fmem_phys;
+}
+
static void __init initialize_mempools(void)
{
struct mem_pool *mpool;