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/arm/cpu/arm926ejs/cache.c b/arch/arm/cpu/arm926ejs/cache.c
index 5b87a3a..71b8ad0 100644
--- a/arch/arm/cpu/arm926ejs/cache.c
+++ b/arch/arm/cpu/arm926ejs/cache.c
@@ -5,6 +5,7 @@
*/
#include <cpu_func.h>
#include <asm/cache.h>
+#include <linux/errno.h>
#include <linux/types.h>
#if !CONFIG_IS_ENABLED(SYS_DCACHE_OFF)
@@ -88,3 +89,8 @@
dcache_enable();
#endif
}
+
+int __weak pgprot_set_attrs(phys_addr_t addr, size_t size, enum pgprot_attrs perm)
+{
+ return -ENOSYS;
+}