arch/ppc/boot/simple/openbios.c

   1 /*
   2  * arch/ppc/boot/simple/openbios.c
   3  *
   4  * 2005 (c) SYSGO AG - g.jaeger@sysgo.com
   5  * This file is licensed under the terms of the GNU General Public
   6  * License version 2.  This program is licensed "as is" without
   7  * any warranty of any kind, whether express or implied.
   8  *
   9  * Derived from arch/ppc/boot/simple/pibs.c (from MontaVista)
  10  */
  11
  12 #include <linux/types.h>
  13 #include <linux/config.h>
  14 #include <linux/string.h>
  15 #include <asm/ppcboot.h>
  16 #include <platforms/4xx/ebony.h>
  17
  18 extern unsigned long decompress_kernel(unsigned long load_addr, int num_words,
  19                                        unsigned long cksum);
  20
  21 /* We need to make sure that this is before the images to ensure
  22  * that it's in a mapped location. */
  23 bd_t hold_resid_buf __attribute__ ((__section__ (".data.boot")));
  24 bd_t *hold_residual = &hold_resid_buf;
  25
  26 void *
  27 load_kernel(unsigned long load_addr, int num_words, unsigned long cksum,
  28                 void *ign1, void *ign2)
  29 {
  30         decompress_kernel(load_addr, num_words, cksum);
  31
  32         /* simply copy the MAC addresses */
  33         memcpy(hold_residual->bi_enetaddr,  (char *)EBONY_OPENBIOS_MAC_BASE, 6);
  34         memcpy(hold_residual->bi_enet1addr, (char *)(EBONY_OPENBIOS_MAC_BASE+EBONY_OPENBIOS_MAC_OFFSET), 6);
  35
  36         return (void *)hold_residual;
  37 }