zynq开发学习记录：u-boot源码编译
1.u-boot移植
u-boot源码包准备
开发者可以从xilinx的github源码库中下载各个版本的u-boot，这里选择版本为u-boot-xlnx-xilinx-v2017.4.zip,将源码包拷贝至虚拟机环境下/home/work目录，右键提取文件到当前目录（samba方式或直接拷贝）
2.u-boot预编译
- cd /home/work/u-boot-xlnx-xilinx-v2017.4/
- apt-get install build-essential git-core libncurses5-dev flex bison texinfo zip unzip zlib1g-dev gettext gperf libsdl-dev libssl-dev 安装必要的工具
- apt-get install u-boot-tools 安装u-boot必要工具
- apt-get install device-tree-compiler 安装设备树编译工具
- make ARCH=arm CROSS_COMPILE=arm-xilinx-linux-gnueabi- zynq_zed_config
- make ARCH=arm CROSS_COMPILE=arm-xilinx-linux-gnueabi-
编译过程中 ./lib/rsa/rsa-sign.c会编译出错，原因是u-boot中rsa使用的libssl-dev的api版本与最新安装的libssl-dev部分api不兼容，根据bing搜索到的信息，根据提示修改该文件
> ---
> lib/rsa/rsa-sign.c | 33 +++++++++++++++++++++++++++------
> 1 file changed, 27 insertions(+), 6 deletions(-)
>
> diff --git a/lib/rsa/rsa-sign.c b/lib/rsa/rsa-sign.c
> index 8c6637e328..965fb00f95 100644
> --- a/lib/rsa/rsa-sign.c
> +++ b/lib/rsa/rsa-sign.c
> @@ -20,6 +20,19 @@
> #define HAVE_ERR_REMOVE_THREAD_STATE
> #endif
>
> +#if OPENSSL_VERSION_NUMBER < 0x10100000L
> +void RSA_get0_key(const RSA *r,
> + const BIGNUM **n, const BIGNUM **e, const BIGNUM **d)
> +{
> + if (n != NULL)
> + *n = r->n;
> + if (e != NULL)
> + *e = r->e;
> + if (d != NULL)
> + *d = r->d;
> +}
> +#endif
> +
> static int rsa_err(const char *msg)
> {
> unsigned long sslErr = ERR_get_error();
> @@ -409,7 +422,11 @@ static int rsa_sign_with_key(RSA *rsa, struct checksum_algo *checksum_algo,
> ret = rsa_err("Could not obtain signature");
> goto err_sign;
> }
> - EVP_MD_CTX_cleanup(context);
> + #if OPENSSL_VERSION_NUMBER < 0x10100000L
> + EVP_MD_CTX_cleanup(context);
> + #else
> + EVP_MD_CTX_reset(context);
> + #endif
> EVP_MD_CTX_destroy(context);
> EVP_PKEY_free(key);
>
> @@ -479,6 +496,7 @@ static int rsa_get_exponent(RSA *key, uint64_t *e)
> {
> int ret;
> BIGNUM *bn_te;
> + const BIGNUM *key_e;
> uint64_t te;
>
> ret = -EINVAL;
> @@ -487,17 +505,18 @@ static int rsa_get_exponent(RSA *key, uint64_t *e)
> if (!e)
> goto cleanup;
>
> - if (BN_num_bits(key->e) > 64)
> + RSA_get0_key(key, NULL, &key_e, NULL);
> + if (BN_num_bits(key_e) > 64)
> goto cleanup;
>
> - *e = BN_get_word(key->e);
> + *e = BN_get_word(key_e);
>
> - if (BN_num_bits(key->e) < 33) {
> + if (BN_num_bits(key_e) < 33) {
> ret = 0;
> goto cleanup;
> }
>
> - bn_te = BN_dup(key->e);
> + bn_te = BN_dup(key_e);
> if (!bn_te)
> goto cleanup;
>
> @@ -527,6 +546,7 @@ int rsa_get_params(RSA *key, uint64_t *exponent, uint32_t *n0_invp,
> {
> BIGNUM *big1, *big2, *big32, *big2_32;
> BIGNUM *n, *r, *r_squared, *tmp;
> + const BIGNUM *key_n;
> BN_CTX *bn_ctx = BN_CTX_new();
> int ret = 0;
>
> @@ -548,7 +568,8 @@ int rsa_get_params(RSA *key, uint64_t *exponent, uint32_t *n0_invp,
> if (0 != rsa_get_exponent(key, exponent))
> ret = -1;
>
> - if (!BN_copy(n, key->n) || !BN_set_word(big1, 1L) ||
> + RSA_get0_key(key, NULL, &key_n, NULL);
> + if (!BN_copy(n, key_n) || !BN_set_word(big1, 1L) ||
> !BN_set_word(big2, 2L) || !BN_set_word(big32, 32L))
> ret = -1;
>
> --
> 2.11.1
>
> _______________________________________________
> U-Boot mailing list
> [email protected]
> http://lists.denx.de/mailman/listinfo/u-boot修改完成后可以正常编译通过
3.u-boot SD卡功能裁剪
当前硬件环境下，单板不含有emmc或SDHC硬件，需要将u-boot相应的功能进行裁剪。
- cd /home/work/u-boot-xlnx-xilinx-v2017.4/configs/
- gedit zynq_zed_defconfig 文件
- #注释CONFIG_CMD_MMC=y
- #注释CONFIG_DFU_MMC=y
- #注释CONFIG_DM_MMC=y
- #注释CONFIG_ZYNQ_SDHCI=y
- #注释CONFIG_MMC_SDHCI=y
- 保存退出
- cd ../arch/arm/dts/
- gedit zynq-zed.dts
- 注释设备树zynq SD卡部分
/*mmc0 = &sdhci0*/;
/*&sdhci0 {
u-boot,dm-pre-reloc;
status = "okay";
}；*/- cd ../../..
- 重新编译
4.u-boot下载运行
- 将u-boot文件重命名为u-boot.elf，并复制到vivado sdk工程的硬件文件夹下，例如project_1.sdk\design_1_wrapper_hw_platform_0
- 打开sdk，并运行时xsdb，（vivado2016以后的版本为xsct）
- cd xxxxxx/project_1.sdk/design_1_wrapper_hw_platform_0（注意路径间隔符，补充自己的路径）
- source ps7_init.tcl
- ps7_init
- dow u-boot.elf
- con
- 在调试串口终端可以看到u-boot输出，运行效果样例（由于uboot版本、单板硬件配置不同，打印信息略有差别）如下
5. u-boot QSPI flash识别
- cd /home/work/u-boot-xlnx-xilinx-v2017.4/configs
- gedit zynq_zed_defconfig
- n25qxxx在u-boot中宏定义开关为CONFIG_SPI_FLASH_STMICRO，将宏定义添加到QSPI相关的宏定义当中
- cd ../..
- 重新编译
- 下载运行
6.u-boot phy识别
- cd /home/work/u-boot-xlnx-xilinx-v2017.4/configs
- gedit zynq_zed_defconfig
- 修改CONFIG_DEFAULT_DEVICE_TREE="zynq-zed"指定设备树文件名称
- cd /home/work/u-boot-xlnx-xilinx-v2017.4/arch/arm/dts/
- gedit zynq-zed.dts
- 修改下列内容
aliases {
ethernet0 = &gem1;
serial0 = &uart1;
spi0 = &qspi;
/*mmc0 = &sdhci0;*/
};/*默认ethernet 指定为gem1*/
&gem1 {
status = "okay";
phy-mode = "rgmii-id";
phy-handle = <ðernet_phy>;
ethernet_phy: ethernet-phy@3 {
reg = <3>;
device_type = "ethernet-phy";
};
};/*将phy地址更改为3*/- cd ../../
- 重新编译，下载