大美南京网站,做网站能用python吗,哈尔滨建设局官网,全网营销国际系统imx6的mac地址总是固定的值#xff0c;所以需要更改#xff0c;采用的方法是在uboot中设置环境变量,之后在kernel中使用uboot中设置的mac地址的值。本文记录更改的过程。 参考链接#xff1a; http://www.cnblogs.com/zengjfgit/p/5711304.html uboot lib_arm/board.c …imx6的mac地址总是固定的值所以需要更改采用的方法是在uboot中设置环境变量,之后在kernel中使用uboot中设置的mac地址的值。本文记录更改的过程。 参考链接 http://www.cnblogs.com/zengjfgit/p/5711304.html uboot lib_arm/board.c void start_armboot (void)
{ ...eth_initialize(gd-bd); ---------------------------... |
}; | | |
int eth_initialize(bd_t *bis) -------------
{ ....../* Try board-specific initialization first. If it fails or isnt * present, try the cpu-specific initialization */ if (board_eth_init(bis) 0) cpu_eth_init(bis); ------------- ...... |
} | |
int cpu_eth_init(bd_t *bis) --------
{ int rc -ENODEV;
#if defined(CONFIG_MXC_FEC) rc mxc_fec_initialize(bis); ------ | /* Board level init */ | enet_board_init(); | |
#endif | return rc; |
} | |
int mxc_fec_initialize(bd_t *bis) ------
{ ......if (fec_get_hwaddr(dev, ethaddr) 0) { ------ printf(got MAC address from IIM: %pM\n, ethaddr); | memcpy(dev-enetaddr, ethaddr, 6); | fec_set_hwaddr(dev); | } | } | | return 1; |
} | |
static int fec_get_hwaddr(struct eth_device *dev, unsigned char *mac)--
{
#ifdef CONFIG_GET_FEC_MAC_ADDR_FROM_IIM fec_get_mac_addr(mac); ------- return 0; |
#else | return -1; |
#endif |
} | |
#ifdef CONFIG_GET_FEC_MAC_ADDR_FROM_IIM |
int fec_get_mac_addr(unsigned char *mac) ----
{
#if 0 unsigned int value; //不读取寄存器中的值 value readl(OCOTP_BASE_ADDR HW_OCOTP_MACn(0)); mac[5] value 0xff; mac[4] (value 8) 0xff; mac[3] (value 16) 0xff; mac[2] (value 24) 0xff; value readl(OCOTP_BASE_ADDR HW_OCOTP_MACn(1)); mac[1] value 0xff; mac[0] (value 8) 0xff;
#else eth_getenv_enetaddr(ethaddr, mac); //使用环境变量设置的mac地址
#endif return 0;
} kernel 1.设备 arch/arm/mach-mx6/board-mx6q_sabresd.c
MACHINE_START(MX6Q_SABRESD, Freescale i.MX 6Quad/DualLite/Solo Sabre-SD Board)/* Maintainer: Freescale Semiconductor, Inc. */.boot_params MX6_PHYS_OFFSET 0x100,.fixup fixup_mxc_board,.map_io mx6_map_io,.init_irq mx6_init_irq,.init_machine mx6_sabresd_board_init,.timer mx6_sabresd_timer,.reserve mx6q_sabresd_reserve,
MACHINE_ENDstatic void __init mx6_sabresd_board_init(void)
{......imx6_init_fec(fec_data);......
}arch/arm/mach-mx6/mx6_fec.c
void __init imx6_init_fec(struct fec_platform_data fec_data)
{//读取寄存器中的mac地址的值fec_get_mac_addr(fec_data.mac);//这里就已经随机生成了mac地址在驱动中就不会再次设置所以注释了//设备注册在驱动注册之前先不要自动生成mac地址由驱动来设置
// if (!is_valid_ether_addr(fec_data.mac))
// random_ether_addr(fec_data.mac);if (cpu_is_mx6sl())imx6sl_add_fec(fec_data);elseimx6q_add_fec(fec_data);
} 2.驱动 drivers/net/fec.c
//驱动设置mac地址
static void __inline__ fec_get_mac(struct net_device *ndev)
{struct fec_enet_private *fep netdev_priv(ndev);struct fec_platform_data *pdata fep-pdev-dev.platform_data;unsigned char *iap, tmpaddr[ETH_ALEN];/** try to get mac address in following order:** 1) module parameter via kernel command line in form* fec.macaddr0x00,0x04,0x9f,0x01,0x30,0xe0*/iap macaddr;// 检查是否合法不合法就通过flash设置/** 2) from flash or fuse (via platform data)*/if (!is_valid_ether_addr(iap)) {
#ifdef CONFIG_M5272if (FEC_FLASHMAC)iap (unsigned char *)FEC_FLASHMAC;
#elseif (pdata)memcpy(iap, pdata-mac, ETH_ALEN);
#endif}// 检查是否合法不合法就通过bootloader设置/** 3) FEC mac registers set by bootloader*/if (!is_valid_ether_addr(iap)) {*((unsigned long *) tmpaddr[0]) be32_to_cpu(readl(fep-hwp FEC_ADDR_LOW));*((unsigned short *) tmpaddr[4]) be16_to_cpu(readl(fep-hwp FEC_ADDR_HIGH) 16);iap tmpaddr[0];}// 随机生成/** 4) generate random mac */if (!is_valid_ether_addr(iap)) random_ether_addr(iap);memcpy(ndev-dev_addr, iap, ETH_ALEN);/* Adjust MAC if using macaddr */if (iap macaddr)ndev-dev_addr[ETH_ALEN-1] macaddr[ETH_ALEN-1] fep-pdev-id;
} Tony Liu 2016-9-22, Shenzhen 转载于:https://www.cnblogs.com/helloworldtoyou/p/5895778.html
