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* This file is part of the LinuxBIOS project.
* Copyright (C) 2000 AG Electronics Ltd.
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* GNU General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
#include <ppc.h>
#include <ppcreg.h>
#include <string.h>
#include <console/console.h>
#define ONEMEG 0x00100000
#define HALFMEG 0x00080000
unsigned long memory_base = 0;
unsigned long memory_top = 0;
unsigned long memory_size = 0;
//extern char __heap_end[];
extern unsigned mpc107_config_memory(void);
unsigned config_memory(unsigned offset)
//extern char __start[];
//extern char __bss_start[];
//unsigned rom_image = (unsigned) __start & 0xfff00000;
//unsigned physical = rom_image + offset;
//unsigned codesize = (unsigned) __bss_start - rom_image;
#if 0
/* At this point, DBAT 0 is memory, 1 is variable, 2 is the rom image,
and 3 is IO. */
ppc_set_io_dbat_reloc(2, rom_image, physical, ONEMEG);
ppc_set_io_dbat (3, 0xf0000000, 0x10000000);
if ( rom_image != physical )
ppc_set_ibats_reloc(rom_image, physical, ONEMEG);
ppc_set_ibats(physical, ONEMEG);
ppc_setup_cpu(1); /* icache enable = 1 */
memory_size = mpc107_config_memory();
/* If we have some working RAM, we copy the code and rodata into it.
* This allows us to reprogram the flash later. */
#if 0
if (memory_size)
unsigned onemeg = memory_size - ONEMEG;
ppc_set_mem_dbat_reloc(1, onemeg, onemeg, ONEMEG);
memcpy((void *)onemeg, (void *)rom_image, codesize);
memset((void *)(onemeg + codesize), 0, ONEMEG - codesize);
ppc_set_ibats_reloc2(rom_image, physical, onemeg, ONEMEG);
ppc_set_mem_dbat_reloc(2, rom_image, onemeg, ONEMEG);
make_coherent((void *)onemeg, ONEMEG);
ppc_set_memory_dbat (memory_size);
//ppc_enable_dcache ();
return memory_size;