| IMX6Q的官方uboot移植，并且把1G的DDR3升级成2G的DDR3，修改网络驱动 | 您所在的位置：网站首页 › ddr3 1067怎么升级 › IMX6Q的官方uboot移植，并且把1G的DDR3升级成2G的DDR3，修改网络驱动 |
IMX6Q的官方uboot移植，并且把1G的DDR3升级成2G的DDR3，修改网络驱动
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使用的是讯为的IMX6Q开发板 ubuntu18.04系统 升级ddr内存2G 文章目录 前言一、下载源码二、编译源码三、解决报错1.PMIC问题2.SD卡问题3.DDR内存问题4.网络问题 总结 前言本文主要学习在NXP官网下载uboot移植，官方uboot默认的是1G的DDR内存，需要修改内存为2G，另外需要修改SD卡的DC引脚和网口驱动 一、下载源码在官网下载源码 git clone https://source.codeaurora.org/external/imx/uboot-imx -b nxp/imx_v2016.03_4.1.15_2.0.0_ga --depth=1编写脚本来编译uboot #!/bin/bash export PATH=$PATH:/usr/local/arm/gcc-linaro-4.9.4-2017.01-x86_64_arm-linux-gnueabihf/bin make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- distclean make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- mx6qsabresd_defconfig make V=1 ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- -j8 二、编译源码输入./uboot.sh编译uboot源码，然后使用SD启动方式将u-boot.imx下载到SD卡中，开发板设置SD卡启动模式，SD卡下载脚本如下，因为我是用的512M的SD卡，所以修改了讯为官方的下载脚本，新建脚本mksdcard-android_512M.sh，内容如下 #!/bin/bash # partition size in MB BOOTLOAD_RESERVE=8 BOOT_ROM_SIZE=8 SYSTEM_ROM_SIZE=64 CACHE_SIZE=16 RECOVERY_ROM_SIZE=8 VENDER_SIZE=8 MISC_SIZE=8 help() { bn=`basename $0` cat node}` total_size=`expr ${total_size} / 1024` boot_rom_sizeb=`expr ${BOOT_ROM_SIZE} + ${BOOTLOAD_RESERVE}` extend_size=`expr ${SYSTEM_ROM_SIZE} + ${CACHE_SIZE} + ${VENDER_SIZE} + ${MISC_SIZE} + ${seprate}` data_size=`expr ${total_size} - ${boot_rom_sizeb} - ${RECOVERY_ROM_SIZE} - ${extend_size} + ${seprate}` # create partitions if [ "${cal_only}" -eq "1" ]; then cat RECOVERY_ROM_SIZE}MB SYSTEM : ${SYSTEM_ROM_SIZE}MB CACHE : ${CACHE_SIZE}MB DATA : ${data_size}MB MISC : ${MISC_SIZE}MB EOF exit fi # destroy the partition table dd if=/dev/zero of=${node} bs=1024 count=1 sfdisk --force ${node} RECOVERY_ROM_SIZE}M,83 ,${extend_size}M,5 ,${data_size}M,83 ,${SYSTEM_ROM_SIZE}M,83 EOF # adjust the partition reserve for bootloader. # if you don't put the uboot on same device, you can remove the BOOTLOADER_ERSERVE # to have 8M space. # the minimal sylinder for some card is 4M, maybe some was 8M # just 8M for some big eMMC 's sylinder sfdisk --force ${node} -N1 BOOT_ROM_SIZE}M,83 EOF df=/dev/zero of=${node} bs=1k seek=384 conv=fsync count=129 dd if=u-boot.imx of=${node} bs=512 seek=2 mkfs.fat ${node}4 mkfs.ext4 ${node}5然后插入SD卡到ubuntu系统中，执行命令./mksdcard-android_512M.sh /dev/sdb等待下载完成，然后启动开发板，打印日志如下： U-Boot 2016.03-ga57b13b (Mar 14 2022 - 18:26:31 +0800) CPU: Freescale i.MX6Q rev1.5 996 MHz (running at 792 MHz) CPU: Extended Commercial temperature grade (-20C to 105C) at 28C Reset cause: POR Board: MX6-SabreSD I2C: ready DRAM: 1 GiB Can't find PMIC:PFUZE100 initcall sequence 4ff96d3c failed at call 17804258 (err=-19) ### ERROR ### Please RESET the board ### 三、解决报错 1.PMIC问题因为讯为的开发板没有使用PMIC芯片，所以直接在uboot中把相关代码屏蔽即可，首先修改宏定义，在uboot-imx/include/configs/mx6_common.h文件中修改 #define CONFIG_LDO_BYPASS_CHECK #undef CONFIG_LDO_BYPASS_CHECK然后在uboot-imx/board/freescale/mx6sabresd/mx6sabresd.c文件中直接屏蔽power_init_board函数代码 #if 0 int power_init_board(void) { struct pmic *pfuze; unsigned int reg; int ret; pfuze = pfuze_common_init(I2C_PMIC); if (!pfuze) return -ENODEV;然后编译下载打印日志如下 U-Boot 2016.03-ga57b13b-dirty (Mar 14 2022 - 18:46:42 +0800) CPU: Freescale i.MX6Q rev1.5 996 MHz (running at 792 MHz) CPU: Extended Commercial temperature grade (-20C to 105C) at 28C Reset cause: POR Board: MX6-SabreSD I2C: ready DRAM: 1 GiB MMC: FSL_SDHC: 0, FSL_SDHC: 1, FSL_SDHC: 2 MMC: no card present *** Warning - MMC init failed, using default environment No panel detected: default to Hannstar-XGA Display: Hannstar-XGA (1024x768) In: serial Out: serial Err: serial MMC: no card present Net: Board Net Initialization Failed No ethernet found. Normal Boot Hit any key to stop autoboot: 0此时PMIC没有报错了，但是SD卡读取不到 2.SD卡问题SD卡读取失败一般是由于CD引脚错误，查看原理图CD引脚为MX6_PAD_GPIO_4__GPIO1_IO04于是修改uboot-imx/board/freescale/mx6sabresd/mx6sabresd.c文件 static iomux_v3_cfg_t const usdhc2_pads[] = { MX6_PAD_SD2_CLK__SD2_CLK | MUX_PAD_CTRL(USDHC_PAD_CTRL), MX6_PAD_SD2_CMD__SD2_CMD | MUX_PAD_CTRL(USDHC_PAD_CTRL), MX6_PAD_SD2_DAT0__SD2_DATA0 | MUX_PAD_CTRL(USDHC_PAD_CTRL), MX6_PAD_SD2_DAT1__SD2_DATA1 | MUX_PAD_CTRL(USDHC_PAD_CTRL), MX6_PAD_SD2_DAT2__SD2_DATA2 | MUX_PAD_CTRL(USDHC_PAD_CTRL), MX6_PAD_SD2_DAT3__SD2_DATA3 | MUX_PAD_CTRL(USDHC_PAD_CTRL), MX6_PAD_NANDF_D4__SD2_DATA4 | MUX_PAD_CTRL(USDHC_PAD_CTRL), MX6_PAD_NANDF_D5__SD2_DATA5 | MUX_PAD_CTRL(USDHC_PAD_CTRL), MX6_PAD_NANDF_D6__SD2_DATA6 | MUX_PAD_CTRL(USDHC_PAD_CTRL), MX6_PAD_NANDF_D7__SD2_DATA7 | MUX_PAD_CTRL(USDHC_PAD_CTRL), // MX6_PAD_NANDF_D2__GPIO2_IO02 | MUX_PAD_CTRL(NO_PAD_CTRL), /* CD */ MX6_PAD_GPIO_4__GPIO1_IO04 | MUX_PAD_CTRL(NO_PAD_CTRL), /* CD */ }; #define USDHC2_CD_GPIO IMX_GPIO_NR(1, 4)然后重新编译下载打印日志 U-Boot 2016.03-ga57b13b-dirty (Mar 15 2022 - 09:06:17 +0800) CPU: Freescale i.MX6Q rev1.5 996 MHz (running at 792 MHz) CPU: Extended Commercial temperature grade (-20C to 105C) at 25C Reset cause: POR Board: MX6-SabreSD I2C: ready DRAM: 1 GiB MMC: FSL_SDHC: 0, FSL_SDHC: 1, FSL_SDHC: 2 *** Warning - bad CRC, using default environment No panel detected: default to Hannstar-XGA Display: Hannstar-XGA (1024x768) In: serial Out: serial Err: serial switch to partitions #0, OK mmc0 is current device Net: Board Net Initialization Failed No ethernet found. Normal Boot Hit any key to stop autoboot: 0现在剩下网络和DDR问题了，先解决DDR问题吧 3.DDR内存问题开发板的DDR是2G的，uboot中DDR默认是1G的，需要修改以下几个文件 uboot-imx/include/configs/mx6sabresd.h uboot-imx/board/freescale/mx6sabresd/mx6q_4x_mt41j128.cfg 首先修改uboot-imx/include/configs/mx6sabresd.h文件 #define PHYS_SDRAM_SIZE (2u * 1024 * 1024 * 1024) #if 0 #if defined(CONFIG_MX6QP) #define PHYS_SDRAM_SIZE (1u * 1024 * 1024 * 1024) #elif defined(CONFIG_MX6Q) #define PHYS_SDRAM_SIZE (2u * 1024 * 1024 * 1024) #elif defined(CONFIG_MX6DL) #define PHYS_SDRAM_SIZE (1u * 1024 * 1024 * 1024) #elif defined(CONFIG_MX6SOLO) #define PHYS_SDRAM_SIZE (512u * 1024 * 1024) #endif #endif这里直接将内存改为2G 然后修改uboot-imx/board/freescale/mx6sabresd/mx6q_4x_mt41j128.cfg文件 修改这个文件需要用到NXP官网的DDR测试工具ddr_stress_tester_v3.00，根据MX6X_DDR3_调校_应用手册_V4_20150730.pdf和飞思卡尔i.MX6平台DRAM接口高阶应用指导-DDR3篇.pdf文档来操作 首先在官网下载 ddr_stress_tester_v3.00_setup.exe.zip工具安装 还有下载I.MX6DQP_DDR3_Script_Aid_V0.01.xlsx表格来配置 表格配置内容是根据MX6X_DDR3_调校_应用手册_V4_20150730.pdf来配置的如下 现在DDR读取是2G了，最后开始修改网络问题，另外我把DDR测试工具和文档上传到了CSDN上，大家可以下载https://download.csdn.net/download/u012988644/84960092 4.网络问题在include/mx6sabre_common.h文件中修改宏定义 #define CONFIG_PHYLIB /*#define CONFIG_PHY_ATHEROS*/ #define CONFIG_PHY_REALTEK重新编译烧录发现网络没找到，引脚定义一样，宏定义也修改了网络还是有问题，可能就是驱动文件有差异了，于是对比了一下drivers/net/phy文件夹下的文件，主要编译了phy.c和realtek.c两个文件，索性直接将两个文件替换掉，重新编译报错 drivers/net/phy/phy.c: 在文件作用域： drivers/net/phy/phy.c:585:1: 错误： 对‘get_phy_id’的静态声明出现在非静态声明之后 { ^ In file included from include/miiphy.h:22:0, from drivers/net/phy/phy.c:17: include/phy.h:269:5: 附注： ‘get_phy_id’的上一个声明在此 int get_phy_id(struct mii_dev *bus, int addr, int devad, u32 *phy_id); ^ make[1]: *** [drivers/net/phy/phy.o] 错误 1 make: *** [drivers/net/phy] 错误 2 make: *** 正在等待未完成的任务....根据报错修改 //static int get_phy_id(struct mii_dev *bus, int addr, int devad, u32 *phy_id) int get_phy_id(struct mii_dev *bus, int addr, int devad, u32 *phy_id)去掉static重新编译ok，然后烧录重启，网络重启成功 接下来配置网络参数和启动参数 setenv bootcmd 'tftp 12000000 zImage; tftp 18000000 imx6q.dtb; bootz 12000000 - 18000000' setenv bootargs 'console=ttymxc0,115200 root=/dev/nfs nfsroot=192.168.1.74:/home/ubuntu/topeet/nfs/rootfs,proto=tcp rw ip=192.168.1.55:192.168.1.74:192.168.1.1:255.255.255.0::eth0:off' setenv ipaddr 192.168.1.55 setenv ethaddr b8:ae:1d:01:00:00 setenv gatewayip 192.168.1.1 setenv netmask 255.255.255.0 setenv serverip 192.168.1.74 saveenv重新上电启动 U-Boot 2016.03-ga57b13b-dirty (Mar 22 2022 - 10:12:40 +0800) CPU: Freescale i.MX6Q rev1.5 996 MHz (running at 792 MHz) CPU: Extended Commercial temperature grade (-20C to 105C) at 30C Reset cause: POR Board: MX6-SabreSD I2C: ready DRAM: 2 GiB MMC: FSL_SDHC: 0, FSL_SDHC: 1, FSL_SDHC: 2 No panel detected: default to Hannstar-XGA Display: Hannstar-XGA (1024x768) In: serial Out: serial Err: serial switch to partitions #0, OK mmc0 is current device Net: FEC [PRIME] Normal Boot Hit any key to stop autoboot: 0接下来输入boot可以正常tftp下载内核和设备树并挂载文件系统 总结好了，成功移植了uboot |
然后把表格生成的文件保存成MX6Q_SabreSD_DDR3_2GB_64bit.inc文件，使用DDR_Tester.exe软件下载，这里需要把开发板设置成usb启动方式，然后上电点击Download下载 
下载完后开始校准Calibration，最后把校准好的值写进MX6Q_SabreSD_DDR3_2GB_64bit.inc文件里。主要就是以下几个值 
接下来照着这几个值的地址修改uboot-imx/board/freescale/mx6sabresd/mx6q_4x_mt41j128.cfg文件中对应地址的值，这时候修改的只是校准部分的值，接下来还需要修改//MMDC init部分的寄存器值 
对应寄存器的值修改，没有的就不管他。接下来编译代码并重新下载查看日志【本文地址】