Merge tag 'mmu-next-14032025' of https://source.denx.de/u-boot/custodians/u-boot-tpm into next

Up to now we configure the entire memory space for U-Boot as RWX.
For modern architectures and security requirements, it's better to
map the memory properly.
This pull request adds basics support for mapping the U-Boot binary with
proper (RO, RW, RW^X) memory permissions on aarch64 right after we
relocate U-Boot in the top of DRAM.
It's worrth noting that the linker script annotations are only added for
the aarch64 architecture. We can, in the future, try to unify the linker --
at least for the architectures that have enough in common and expand this

1 files changed, 6 insertions, 0 deletions

diff --git a/arch/nios2/lib/cache.c b/arch/nios2/lib/cache.c
index 8f543f2a2f2..d7fd9ca8bd4 100644
--- a/arch/nios2/lib/cache.c
+++ b/arch/nios2/lib/cache.c
@@ -8,6 +8,7 @@
 #include <cpu_func.h>
 #include <asm/cache.h>
 #include <asm/global_data.h>
+#include <linux/errno.h>
 
 DECLARE_GLOBAL_DATA_PTR;
 
@@ -127,3 +128,8 @@ void dcache_disable(void)
 {
 	flush_dcache_all();
 }
+
+int __weak pgprot_set_attrs(phys_addr_t addr, size_t size, enum pgprot_attrs perm)
+{
+	return -ENOSYS;
+}