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Get MAC address from USER registers

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git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@1810 42af7a65-404d-4744-a932-0658087f49c3
This commit is contained in:
patacongo 2009-05-20 20:56:38 +00:00
parent 4a33ea7334
commit 13c14c925a
3 changed files with 101 additions and 1 deletions
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5
configs/eagle100/README.txt
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@ -166,6 +166,11 @@ Eagle100-specific Configuration Options
CONFIG_UARTn_PARTIY - 0=no parity, 1=odd parity, 2=even parity
CONFIG_UARTn_2STOP - Two stop bits
CONFIG_LM3S_ETHERNET - This must be set (along with CONFIG_NET)
to build the LM3S Ethernet driver
CONFIG_LM3S_BOARDMAC - If the board-specific logic can provide
a MAC address (via lm3s_ethernetmac()), then this should be selected.
Configurations
^^^^^^^^^^^^^^

2
configs/eagle100/src/Makefile
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@ -39,7 +39,7 @@ CFLAGS += -I$(TOPDIR)/sched
ASRCS =
AOBJS = $(ASRCS:.S=$(OBJEXT))
CSRCS = up_boot.c up_leds.c
CSRCS = up_boot.c up_leds.c up_ethernet.c
COBJS = $(CSRCS:.c=$(OBJEXT))
SRCS = $(ASRCS) $(CSRCS)

95
configs/eagle100/src/up_ethernet.c Normal file
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@ -0,0 +1,95 @@
/************************************************************************************
* configs/eagle100/src/up_ethernet.c
* arch/arm/src/board/up_ethernet.c
*
* Copyright (C) 2009 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* 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. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "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 THE
* COPYRIGHT OWNER OR CONTRIBUTORS 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.
*
************************************************************************************/
/************************************************************************************
* Included Files
************************************************************************************/
#include <nuttx/config.h>
#include <sys/types.h>
#include <arch/board/board.h>
#include <net/ethernet.h>
#include "up_arch.h"
#include "chip.h"
/************************************************************************************
* Definitions
************************************************************************************/
/************************************************************************************
* Private Functions
************************************************************************************/
/************************************************************************************
* Public Functions
************************************************************************************/
/************************************************************************************
* Name: lm3s_ethernetmac
*
* Description:
* For the Ethernet Eval Kits, the MAC address will be stored in the non-volatile
* USER0 and USER1 registers. If CONFIG_LM3S_BOARDMAC is defined, this function
* will obtain the MAC address from these registers.
*
************************************************************************************/
#ifdef CONFIG_LM3S_BOARDMAC
void lm3s_ethernetmac(struct ether_addr *ethaddr)
{
struct ether_addr
{
uint32 user0;
uint32 user1;
/* Get the current value of the user registers */
user0 = getreg32();
user1 = getreg32();
DEBUGASSERT(user0 != 0xffffffff && user1 == 0xffffffff);
/* Re-format that MAC address the way that uIP expects to see it */
ethaddr->ether_addr_octet.addr[0] = ((user0 >> 0) & 0xff);
ethaddr->ether_addr_octet.addr[1] = ((user0 >> 8) & 0xff);
ethaddr->ether_addr_octet.addr[2] = ((user0 >> 16) & 0xff);
ethaddr->ether_addr_octet.addr[3] = ((user1 >> 0) & 0xff);
ethaddr->ether_addr_octet.addr[4] = ((user1 >> 8) & 0xff);
ethaddr->ether_addr_octet.addr[5] = ((user1 >> 16) & 0xff);
}
#endif