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_important_ : the old BtRiscBSD compatibility has been put to rest... this 

means that kernels from now on are not bootable by !BtRiscBSD but only with
!BtNetBSD.

Big initial commit for a new cleaned up and extended bootblock style. This
patch also allows ELF symbol tables to be read when the patches on the
bootloader are commit but will work fine with the older bootloader.

An extra option `oldkernel' will be provided in the newer bootloader to
pass out old style bootconfig's thus enabling old style kernels to load and
function.

Tested on a.out and ELF (preliminary) kernels with both older and new style
bootconfig blocks.
This commit is contained in:
reinoud 2002-02-11 18:47:36 +00:00
parent 47294af050
commit 11982f07b9
2 changed files with 162 additions and 886 deletions
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960
sys/arch/acorn32/acorn32/rpc_machdep.c
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File diff suppressed because it is too large Load Diff

88
sys/arch/acorn32/include/bootconfig.h
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@ -1,6 +1,7 @@
/* $NetBSD: bootconfig.h,v 1.2 2002/02/09 23:58:30 reinoud Exp $ */
/* $NetBSD: bootconfig.h,v 1.3 2002/02/11 18:47:37 reinoud Exp $ */
/*
* Copyright (c) 2002 Reinoud Zandijk.
* Copyright (c) 1994 Mark Brinicombe.
* Copyright (c) 1994 Brini.
* All rights reserved.
@ -37,20 +38,76 @@
*
* boot configuration structures
*
* Created : 12/09/94
*
* Based on kate/boot/bootconfig.h
*/
typedef struct _PhysMem {
u_int address;
u_int pages;
} PhysMem;
#if defined(_KERNEL)
#define DRAM_BLOCKS 4
/* get some spare blocks ;) */
#define DRAM_BLOCKS 32
#define VRAM_BLOCKS 16
typedef struct {
u_int address;
u_int pages;
u_int flags;
} phys_mem;
typedef struct _BootConfig {
u_int magic;
u_int version; /* version 2+ */
u_char machine_id[4];
char kernelname[80];
char args[512]; /* 512 bytes is better than 4096 */
u_int kernvirtualbase; /* not used now */
u_int kernphysicalbase; /* not used now */
u_int kernsize;
u_int scratchvirtualbase;
u_int scratchphysicalbase;
u_int scratchsize;
u_int ksym_start;
u_int ksym_end;
u_int MDFvirtualbase; /* not used yet */
u_int MDFphysicalbase; /* not used yet */
u_int MDFsize; /* not used yet */
u_int display_phys;
u_int display_start;
u_int display_size;
u_int width;
u_int height;
u_int log2_bpp;
u_int framerate;
char reserved[512]; /* future expansion */
u_int pagesize;
u_int drampages;
u_int vrampages;
u_int dramblocks;
u_int vramblocks;
phys_mem dram[DRAM_BLOCKS];
phys_mem vram[VRAM_BLOCKS];
} BootConfig;
/************ compat stuff ************/
typedef struct {
u_int address;
u_int pages;
} phys_mem_v1;
typedef struct {
u_int kernvirtualbase;
u_int kernphysicalbase;
u_int kernsize;
@ -67,8 +124,8 @@ typedef struct _BootConfig {
u_int height;
u_int log2_bpp;
PhysMem dram[DRAM_BLOCKS];
PhysMem vram[1];
phys_mem_v1 dram[4];
phys_mem_v1 vram[1];
u_int dramblocks;
u_int vramblocks;
@ -82,10 +139,12 @@ typedef struct _BootConfig {
u_char machine_id[4];
u_int magic;
u_int display_phys;
} BootConfig;
} BootConfig_v1;
/************ end compat stuff ***********/
#define OLD_BOOTCONFIG_MAGIC 0x42301068
#define BOOTCONFIG_MAGIC 0x43112233
#define BOOTCONFIG_VERSION 0x2
extern BootConfig bootconfig;
#endif /* _KERNEL */
@ -105,4 +164,5 @@ extern char *boot_args;
extern char *boot_file;
#endif /* _KERNEL */
/* End of bootconfig.h */