mx31pdk: copy SPL directly, not using relocate_code.

Signed-off-by: Albert ARIBAUD <albert.u.boot@aribaud.net>
Reviewed-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com>
Tested-by: Simon Glass <sjg@chromium.org>

diff --git a/board/freescale/mx31pdk/mx31pdk.c b/board/freescale/mx31pdk/mx31pdk.c
index 49158bd90dfaad7739e0cf6777976ad236866ce9..4f6cfeeaa34bd3552acb941adf3131d7d320d28e 100644 (file)
--- a/board/freescale/mx31pdk/mx31pdk.c
+++ b/board/freescale/mx31pdk/mx31pdk.c
@@ -39,7 +39,21 @@ DECLARE_GLOBAL_DATA_PTR;
 #ifdef CONFIG_SPL_BUILD
 void board_init_f(ulong bootflag)
 {
-       relocate_code(CONFIG_SPL_TEXT_BASE);
+       /*
+        * copy ourselves from where we are running to where we were
+        * linked at. Use ulong pointers as all addresses involved
+        * are 4-byte-aligned.
+        */
+       ulong *start_ptr, *end_ptr, *link_ptr, *run_ptr, *dst;
+       asm volatile ("ldr %0, =_start" : "=r"(start_ptr));
+       asm volatile ("ldr %0, =_end" : "=r"(end_ptr));
+       asm volatile ("ldr %0, =board_init_f" : "=r"(link_ptr));
+       asm volatile ("adr %0, board_init_f" : "=r"(run_ptr));
+       for (dst = start_ptr; dst < end_ptr; dst++)
+               *dst = *(dst+(run_ptr-link_ptr));
+       /*
+        * branch to nand_boot's link-time address.
+        */
        asm volatile("ldr pc, =nand_boot");
 }
 #endif