some ugly instructions (I wouldn't call this code), that switch to PL0 and check that MMU really works here - it's temporary, don't merge! (merge commit b4 PL0_test.c was added, if you really want)

1 files changed, 6 insertions, 1 deletions

diff --git a/kernel.c b/kernel.c
index bd4426d..5d4e6d7 100644
--- a/kernel.c
+++ b/kernel.c
@@ -229,7 +229,12 @@ void kernel_main(uint32_t r0, uint32_t r1, uint32_t atags)
       (&_binary_PL_0_test_img_start)[i];
 
   // jump to that copied code (no switch to PL0 yet, just testing)
-  ((void(*)(void)) (((uint32_t) 0b101010101010) << 20))();
+  asm volatile("mov  r5, #0\n\r"
+  	       "movt r5, #0b1010101010101111\n\r"
+  	       "mov  sp, r5\n\r"
+  	       "mov  r5, #0\n\r"
+  	       "movt r5, #0b1010101010100000\n\r"
+  	       "blx  r5\n\r");
   
   while(1);