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Add MS-DOS crosscompilation support

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Tested, works fine. Part 1: Code changes.

Corresponding to flashrom svn r944.

Signed-off-by: Rudolf Marek <r.marek@assembler.cz>
Acked-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
This commit is contained in:
Rudolf Marek
2010-03-16 23:59:19 +00:00
committed by Carl-Daniel Hailfinger
parent ccf7a2a231
commit 03ae5c117a
3 changed files with 132 additions and 2 deletions
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73
physmap.c
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@ -4,6 +4,7 @@
* Copyright (C) 2009 Peter Stuge <peter@stuge.se>
* Copyright (C) 2009 coresystems GmbH
* Copyright (C) 2010 Carl-Daniel Hailfinger
* Copyright (C) 2010 Rudolf Marek <r.marek@assembler.cz>
*
* 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
@ -27,7 +28,77 @@
#include <errno.h>
#include "flash.h"
#ifdef __DARWIN__
#ifdef __DJGPP__
#include <dpmi.h>
#define MEM_DEV "dpmi"
unsigned short segFS = 0;
void *sys_physmap(unsigned long phys_addr, size_t len)
{
int ret;
__dpmi_meminfo mi;
if (segFS == 0) {
segFS = __dpmi_allocate_ldt_descriptors (1);
__dpmi_set_segment_base_address (segFS, 0x0);
__dpmi_set_segment_limit (segFS, 0xffffffff);
}
mi.address = phys_addr;
mi.size = len;
ret = __dpmi_physical_address_mapping (&mi);
if (ret != 0) {
return NULL;
}
return (void *) mi.address;
}
#define sys_physmap_rw_uncached sys_physmap
#include <sys/movedata.h>
#include <sys/segments.h>
#include <go32.h>
static void *realmem_cpy;
void *sys_physmap_ro_cached(unsigned long phys_addr, size_t len)
{
/* no support for not a 1MB of mem */
if ((phys_addr + len) > 1024*1024)
return NULL;
if (realmem_cpy)
return realmem_cpy + phys_addr;
realmem_cpy = valloc(1024*1024);
if (!realmem_cpy)
return NULL;
movedata(_dos_ds, 0, _my_ds(), (unsigned long) realmem_cpy, 1024*1024);
return realmem_cpy + phys_addr;
}
void physunmap(void *virt_addr, size_t len)
{
__dpmi_meminfo mi;
/* we ignore unmaps for our cheat 1MB copy */
if ((virt_addr >= realmem_cpy) && ((virt_addr + len) <= (realmem_cpy + 1024*1024))) {
return;
}
mi.address = (unsigned long) virt_addr;
__dpmi_free_physical_address_mapping(&mi);
}
#elif defined(__DARWIN__)
#include <DirectIO/darwinio.h>
#define MEM_DEV "DirectIO"