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/*
* layout.h - definitions for where the 1st and 2nd stage bootstraps
* go in memory and the structures they use to communicate.
*
* Copyright (C) 1996 Paul Mackerras
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*/
#define VERSION "3.0"
#define FIRST_BASE 0x3f4000 /* dec: 4145152 */
#define FIRST_SIZE 0x400 /* dec: 1024 */
#define SECOND_BASE 0x3b0000 /* dec: 3866624 */
#define SECOND_SIZE 0x40000 /* dec: 262144 max size of second.b */
#define SECOND_MAP_BASE 0x3efc00 /* Last 1K of SECOND's memory range,
which we can overwrite on last
transfer if needed */
#define SECOND_MAP_SIZE 0x400 /* dec: 1024 */
#define STACK_TOP 0x400000 /* dec: 4194304 */
/* 0x400000 - 0x500000 is one of OF's favourite places to be. */
/* We malloc in low memory now and load kernel at 0x500000 instead, we
* also map 64MB with BATs. This is all done to help loading larger
* kernels. --BenH.
*/
#define MALLOC_BASE 0x300000 /* dec: 3145728 */
#ifndef __ASSEMBLY__
struct first_info {
char quik_vers[8];
int nblocks; /* blocks in second.b */
int blocksize;
unsigned second_base;
unsigned second_map_base; /* load address of second.map */
int conf_part;
char conf_file[32];
unsigned blknos[1]; /* block used for second.map */
};
#endif /* __ASSEMBLY__ */
/*
* If you change FIRST_SIZE or sizeof(struct first_info),
* be sure to change the definition of FIRST_INFO_OFF.
*/
#define FIRST_INFO_OFF 0x2c8 /* was FIRST_SIZE - sizeof(struct first_info) */
/* now it is stuck because openbios */
/* for qemu hardcoded it rather than just */
/* booting the bootable partition and I */
/* don't know how the openbios forth code */
/* works well enough to fix it. */
#define FIRST_INFO (FIRST_BASE + FIRST_INFO_OFF)
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