Aren/NetBSD
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Stand-alone memory sizing routine for the Intel i80321 I/O processor

Browse Source 
("Verde").
This commit is contained in:
thorpej 2002-03-27 04:13:39 +00:00
parent bb22d1e732
commit eb1415ce49
1 changed files with 81 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

81
sys/arch/evbarm/stand/board/i80321_mem.c Normal file
View File

@ -0,0 +1,81 @@
/* $NetBSD: i80321_mem.c,v 1.1 2002/03/27 04:13:39 thorpej Exp $ */
/*
* Copyright (c) 2002 Wasabi Systems, Inc.
* All rights reserved.
*
* Written by Jason R. Thorpe for Wasabi Systems, Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed for the NetBSD Project by
* Wasabi Systems, Inc.
* 4. The name of Wasabi Systems, Inc. may not be used to endorse
* or promote products derived from this software without specific prior
* written permission.
*
* THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
/*
* This file provides the mem_init() function for boards using the
* Intel i80321 I/O Processor.
*/
#include <sys/types.h>
#include <lib/libsa/stand.h>
#include <arm/xscale/i80321reg.h>
#include "board.h"
#define INL(x) *((__volatile uint32_t *) \
(VERDE_PMMR_BASE + VERDE_MCU_BASE + (x)))
void
mem_init(void)
{
uint32_t sdbr, sbr0, sbr1;
uint32_t bank0, bank1;
uint32_t start, size, heap;
sdbr = INL(MCU_SDBR);
sbr0 = INL(MCU_SBR0);
sbr1 = INL(MCU_SBR1);
start = sdbr;
sdbr = (sdbr >> 25) & 0x1f;
sbr0 &= 0x3f;
sbr1 &= 0x3f;
bank0 = (sbr0 - sdbr) << 25;
bank1 = (sbr1 - sbr0) << 25;
size = bank0 + bank1;
heap = (start + size) - 0x30000;
printf(">> RAM 0x%x - 0x%x, heap at 0x%x\n",
start, (start + size) - 1, heap);
setheap((void *)heap, (void *)(start + size));
}