powerpc/boot/treeboot-ebony.c

0001 // SPDX-License-Identifier: GPL-2.0-only
0002 /*
0003  * Old U-boot compatibility for Ebony
0004  *
0005  * Author: David Gibson <david@gibson.dropbear.id.au>
0006  *
0007  * Copyright 2007 David Gibson, IBM Corporatio.
0008  *   Based on cuboot-83xx.c, which is:
0009  * Copyright (c) 2007 Freescale Semiconductor, Inc.
0010  */
0011
0012 #include "ops.h"
0013 #include "stdio.h"
0014 #include "44x.h"
0015
0016 BSS_STACK(4096);
0017
0018 #define OPENBIOS_MAC_BASE   0xfffffe0c
0019 #define OPENBIOS_MAC_OFFSET 0xc
0020
0021 void platform_init(void)
0022 {
0023     unsigned long end_of_ram = 0x8000000;
0024     unsigned long avail_ram = end_of_ram - (unsigned long)_end;
0025
0026     simple_alloc_init(_end, avail_ram, 32, 64);
0027     ebony_init((u8 *)OPENBIOS_MAC_BASE,
0028            (u8 *)(OPENBIOS_MAC_BASE + OPENBIOS_MAC_OFFSET));
0029 }