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/powerpc/lib/cache.c b/arch/powerpc/lib/cache.c
index a9cd7b8d30a..e4d9546039d 100644
--- a/arch/powerpc/lib/cache.c
+++ b/arch/powerpc/lib/cache.c
@@ -8,6 +8,7 @@
 #include <stdio.h>
 #include <asm/cache.h>
 #include <watchdog.h>
+#include <linux/errno.h>
 
 static ulong maybe_watchdog_reset(ulong flushed)
 {
@@ -58,3 +59,8 @@ void invalidate_icache_all(void)
 {
 	puts("No arch specific invalidate_icache_all available!\n");
 }
+
+int __weak pgprot_set_attrs(phys_addr_t addr, size_t size, enum pgprot_attrs perm)
+{
+	return -ENOSYS;
+}