treewide: Add a function to change page permissions
For armv8 we are adding proper page permissions for the relocated U-Boot
binary. Add a weak function that can be used across architectures to change
the page permissions
Tested-by: Neil Armstrong <neil.armstrong@linaro.org> # on AML-S905X-CC
Signed-off-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
diff --git a/arch/xtensa/lib/cache.c b/arch/xtensa/lib/cache.c
index e6a7f68..1229b40 100644
--- a/arch/xtensa/lib/cache.c
+++ b/arch/xtensa/lib/cache.c
@@ -6,6 +6,7 @@
#include <cpu_func.h>
#include <asm/cache.h>
+#include <linux/errno.h>
/*
* We currently run always with caches enabled when running from memory.
@@ -57,3 +58,8 @@
{
__invalidate_icache_all();
}
+
+int __weak pgprot_set_attrs(phys_addr_t addr, size_t size, enum pgprot_attrs perm)
+{
+ return -ENOSYS;
+}