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openwrt-xburst/target/linux/ar7/patches-3.6/200-free-mem-below-kernel-offset.patch
florian e58dc6f93a [ar7] add support for Linux 3.6
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@34154 3c298f89-4303-0410-b956-a3cf2f4a3e73
2012-11-11 18:41:09 +00:00

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461 B
Diff

--- a/arch/mips/ar7/memory.c
+++ b/arch/mips/ar7/memory.c
@@ -67,5 +67,11 @@ void __init prom_meminit(void)
void __init prom_free_prom_memory(void)
{
- /* Nothing to free */
+ /* adapted from arch/mips/txx9/generic/setup.c */
+ unsigned long saddr = PHYS_OFFSET + PAGE_SIZE;
+ unsigned long eaddr = __pa_symbol(&_text);
+
+ /* free memory between prom-record and kernel _text base */
+ if (saddr < eaddr)
+ free_init_pages("prom memory", saddr, eaddr);
}