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/m68k/lib/cache.c b/arch/m68k/lib/cache.c
index 370ad40..a21fe32 100644
--- a/arch/m68k/lib/cache.c
+++ b/arch/m68k/lib/cache.c
@@ -8,6 +8,7 @@
#include <cpu_func.h>
#include <asm/immap.h>
#include <asm/cache.h>
+#include <linux/errno.h>
volatile int *cf_icache_status = (int *)ICACHE_STATUS;
volatile int *cf_dcache_status = (int *)DCACHE_STATUS;
@@ -151,3 +152,8 @@
{
/* An empty stub, real implementation should be in platform code */
}
+
+int __weak pgprot_set_attrs(phys_addr_t addr, size_t size, enum pgprot_attrs perm)
+{
+ return -ENOSYS;
+}