提交 cd272d1e 编写于 作者: I Illia Ragozin 提交者: Russell King

ARM: 7696/1: Fix kexec by setting outer_cache.inv_all for Feroceon

On Feroceon the L2 cache becomes non-coherent with the CPU
when the L1 caches are disabled. Thus the L2 needs to be invalidated
after both L1 caches are disabled.

On kexec before the starting the code for relocation the kernel,
the L1 caches are disabled in cpu_froc_fin (cpu_v7_proc_fin for Feroceon),
but after L2 cache is never invalidated, because inv_all is not set
in cache-feroceon-l2.c.
So kernel relocation and decompression may has (and usually has) errors.
Setting the function enables L2 invalidation and fixes the issue.

Cc: <stable@vger.kernel.org>
Signed-off-by: NIllia Ragozin <illia.ragozin@grapecom.com>
Acked-by: NJason Cooper <jason@lakedaemon.net>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
上级 de40614e
...@@ -343,6 +343,7 @@ void __init feroceon_l2_init(int __l2_wt_override) ...@@ -343,6 +343,7 @@ void __init feroceon_l2_init(int __l2_wt_override)
outer_cache.inv_range = feroceon_l2_inv_range; outer_cache.inv_range = feroceon_l2_inv_range;
outer_cache.clean_range = feroceon_l2_clean_range; outer_cache.clean_range = feroceon_l2_clean_range;
outer_cache.flush_range = feroceon_l2_flush_range; outer_cache.flush_range = feroceon_l2_flush_range;
outer_cache.inv_all = l2_inv_all;
enable_l2(); enable_l2();
......
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