avr32: add generic board support

[u-boot] / arch / powerpc / cpu / mpc5xxx / start.S

diff --git a/arch/powerpc/cpu/mpc5xxx/start.S b/arch/powerpc/cpu/mpc5xxx/start.S
index 517b5808fecf00f65091d4d1736cfb0e2d5e6f01..94eb0d3fff881ae251ea7bdbcee9b2a5ab58d68f 100644 (file)
--- a/arch/powerpc/cpu/mpc5xxx/start.S
+++ b/arch/powerpc/cpu/mpc5xxx/start.S
@@ -14,9 +14,6 @@
 #include <mpc5xxx.h>
 #include <version.h>
 
-#define CONFIG_MPC5xxx 1       /* needed for Linux kernel header files */
-#define _LINUX_CONFIG_H 1      /* avoid reading Linux autoconf.h file  */
-
 #include <ppc_asm.tmpl>
 #include <ppc_defs.h>
 
@@ -79,6 +76,21 @@ _start:
         * been done in the SPL u-boot version.
         */
        GET_GOT                 /* initialize GOT access                */
+
+       /*
+        * The GD (global data) struct needs to get cleared. Lets do
+        * this by calling memset().
+        * This function is called when the platform is build with SPL
+        * support from the main (full-blown) U-Boot. And the GD needs
+        * to get cleared (again) so that the following generic
+        * board support code, defined via CONFIG_SYS_GENERIC_BOARD,
+        * initializes all variables correctly.
+        */
+       mr      r3, r2          /* parameter 1:  GD pointer             */
+       li      r4,0            /* parameter 2:  value to fill          */
+       li      r5,GD_SIZE      /* parameter 3:  count                  */
+       bl      memset
+
        bl      board_init_f    /* run 1st part of board init code (in Flash)*/
        /* NOTREACHED - board_init_f() does not return */
 #else