xref: /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