rpi4: Cleanup memory regions, move pens to first page

[project/bcm63xx/atf.git] / plat / rpi / rpi4 / rpi4_bl31_setup.c

diff --git a/plat/rpi/rpi4/rpi4_bl31_setup.c b/plat/rpi/rpi4/rpi4_bl31_setup.c
index 8dfadf73062583cd50d1ed25aa5e94d351d7b502..f8bc259f23645f68c3d2abbde2ce838590edadf3 100644 (file)
--- a/plat/rpi/rpi4/rpi4_bl31_setup.c
+++ b/plat/rpi/rpi4/rpi4_bl31_setup.c
@@ -197,10 +197,9 @@ void bl31_plat_arch_setup(void)
        /*
         * Add the first page of memory, which holds the stub magic,
         * the kernel and the DT address.
-        * This is read-only, as the GPU already populated the header,
-        * we just need to read it.
+        * This also holds the secondary CPU's entrypoints and mailboxes.
         */
-       mmap_add_region(0, 0, 4096, MT_MEMORY | MT_RO | MT_SECURE);
+       mmap_add_region(0, 0, 4096, MT_NON_CACHEABLE | MT_RW | MT_SECURE);
 
        rpi3_setup_page_tables(BL31_BASE, BL31_END - BL31_BASE,
                               BL_CODE_BASE, BL_CODE_END,