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078aa440fd
Some bootloaders (e.g. PSPBoot on AC49x) have a load-offset, this frees that memory region so it is usable for Linux. Signed-off-by: Daniel Golle <dgolle@allnet.de> Signed-off-by: Florian Fainelli <florian@openwrt.org> git-svn-id: svn://svn.openwrt.org/openwrt/trunk@34143 3c298f89-4303-0410-b956-a3cf2f4a3e73
16 lines
461 B
Diff
16 lines
461 B
Diff
--- a/arch/mips/ar7/memory.c
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+++ b/arch/mips/ar7/memory.c
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@@ -67,5 +67,11 @@ void __init prom_meminit(void)
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void __init prom_free_prom_memory(void)
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{
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- /* Nothing to free */
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+ /* adapted from arch/mips/txx9/generic/setup.c */
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+ unsigned long saddr = PHYS_OFFSET + PAGE_SIZE;
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+ unsigned long eaddr = __pa_symbol(&_text);
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+
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+ /* free memory between prom-record and kernel _text base */
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+ if (saddr < eaddr)
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+ free_init_pages("prom memory", saddr, eaddr);
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}
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