xref: /openbmc/linux/arch/powerpc/boot/treeboot-ebony.c (revision 75bf465f0bc33e9b776a46d6a1b9b990f5fb7c37)
1  // SPDX-License-Identifier: GPL-2.0-only
2  /*
3   * Old U-boot compatibility for Ebony
4   *
5   * Author: David Gibson <david@gibson.dropbear.id.au>
6   *
7   * Copyright 2007 David Gibson, IBM Corporatio.
8   *   Based on cuboot-83xx.c, which is:
9   * Copyright (c) 2007 Freescale Semiconductor, Inc.
10   */
11  
12  #include "ops.h"
13  #include "stdio.h"
14  #include "44x.h"
15  
16  BSS_STACK(4096);
17  
18  #define OPENBIOS_MAC_BASE	0xfffffe0c
19  #define OPENBIOS_MAC_OFFSET	0xc
20  
platform_init(void)21  void platform_init(void)
22  {
23  	unsigned long end_of_ram = 0x8000000;
24  	unsigned long avail_ram = end_of_ram - (unsigned long)_end;
25  
26  	simple_alloc_init(_end, avail_ram, 32, 64);
27  	ebony_init((u8 *)OPENBIOS_MAC_BASE,
28  		   (u8 *)(OPENBIOS_MAC_BASE + OPENBIOS_MAC_OFFSET));
29  }
30