Licheepi zero SPI Flash 系统编译

在一些低成本应用场景，需要在SPI
flash上启动系统，这需要对Uboot和系统镜像做些适配。

本文介绍SPI Flash镜像的制作过程。

Flash分区规划

这里使用 xt25f128b, 16M SPI flash 作为启动介质，规划分区如下：

Uboot编译配置

由于目前Uboot环境变量固定存放在1MB位置之内，所有留给uboot的空间固定到flash前1MB的位置不变。

每个分区的大小必须是擦除块大小的整数倍，xt25f128b的擦除块大小是64KB。

准备uboot

下载包含spi驱动的体验版本uboot，该驱动目前尚未合并到主线

git clone -b v3s-spi-experimental https://github.com/Lichee-Pi/u-boot.git

配置Flash支持型号

执行 make ARCH=arm menuconfig 打开uboot菜单配置，进入到
Device Drivers --> SPI Flash Support

注意看一下自己flash的厂家名称，例如选上winbond SPI flash support
support用来支持测试用的flash：xt25f128b。

如果使用的是16MB以上的flash，需要勾选flash
bank支持选项，否则最多只能读到16MB： CONFIG_SPI_FLASH_BAR

配置uboot支持xt25f128b

由于需要移植的 flash 芯片特性和 w25qxxx 系列的 flash 相似，所以可以直接复制过来，修改后如下
uboot工程：drivers/mtd/spi/spi_flash_ids.c
添加参数：

onst struct spi_flash_info spi_flash_ids[] = {...{"w25q128fw",      INFO(0xef6018, 0x0,  64 * 1024,   256, RD_FULL | WR_QPP | SECT_4K) },{"xt25f128b",      INFO(0x0b4018, 0x0,  64 * 1024,   256, RD_FULL | WR_QPP | SECT_4K) },...
};

上面的数据格式为：

/* Used when the "_ext_id" is two bytes at most */
#define INFO(_jedec_id, _ext_id, _sector_size, _n_sectors, _flags)    \.id = {                         \....id_len = (!(_jedec_id) ? 0 : (3 + ((_ext_id) ? 2 : 0))),   \.sector_size = (_sector_size),              \.n_sectors = (_n_sectors),              \.page_size = 256,                   \.flags = (_flags),

修改之后的文件

#ifdef CONFIG_SPI_FLASH_WINBOND     /* WINBOND */{"w25p80",     INFO(0xef2014, 0x0,  64 * 1024,    16, 0) },{"w25p16",     INFO(0xef2015, 0x0,  64 * 1024,    32, 0) },{"w25p32",     INFO(0xef2016, 0x0,  64 * 1024,    64, 0) },{"w25x40",     INFO(0xef3013, 0x0,  64 * 1024,     8, SECT_4K) },{"w25x16",     INFO(0xef3015, 0x0,  64 * 1024,    32, SECT_4K) },{"w25x32",     INFO(0xef3016, 0x0,  64 * 1024,    64, SECT_4K) },{"w25x64",     INFO(0xef3017, 0x0,  64 * 1024,   128, SECT_4K) },{"w25q80bl",       INFO(0xef4014, 0x0,  64 * 1024,    16, RD_FULL | WR_QPP | SECT_4K) },{"w25q16cl",       INFO(0xef4015, 0x0,  64 * 1024,    32, RD_FULL | WR_QPP | SECT_4K) },{"w25q32bv",       INFO(0xef4016, 0x0,  64 * 1024,    64, RD_FULL | WR_QPP | SECT_4K) },{"w25q64cv",       INFO(0xef4017, 0x0,  64 * 1024,   128, RD_FULL | WR_QPP | SECT_4K) },{"w25q128bv",      INFO(0xef4018, 0x0,  64 * 1024,   256, RD_FULL | WR_QPP | SECT_4K) },{"w25q256",    INFO(0xef4019, 0x0,  64 * 1024,   512, RD_FULL | WR_QPP | SECT_4K) },{"w25q80bw",       INFO(0xef5014, 0x0,  64 * 1024,    16, RD_FULL | WR_QPP | SECT_4K) },{"w25q16dw",       INFO(0xef6015, 0x0,  64 * 1024,    32, RD_FULL | WR_QPP | SECT_4K) },{"w25q32dw",       INFO(0xef6016, 0x0,  64 * 1024,    64, RD_FULL | WR_QPP | SECT_4K) },{"w25q64dw",       INFO(0xef6017, 0x0,  64 * 1024,   128, RD_FULL | WR_QPP | SECT_4K) },{"w25q128fw",      INFO(0xef6018, 0x0,  64 * 1024,   256, RD_FULL | WR_QPP | SECT_4K) },{"xt25f128b",      INFO(0x0b4018, 0x0,  64 * 1024,   256, RD_FULL | WR_QPP | SECT_4K) },
#endif

配置uboot默认环境变量

在文件 include/configs/sun8i.h
中添加默认bootcmd和bootargs的环境变量设置，注意添加的位置在“ #include
<configs/sunxi-common.h> ”的前边。

#define CONFIG_BOOTCOMMAND   "sf probe 0; "                           \"sf read 0x41800000 0x100000 0x10000; "  \"sf read 0x41000000 0x110000 0x400000; " \"bootz 0x41000000 - 0x41800000"#define CONFIG_BOOTARGS      "console=ttyS0,115200 earlyprintk panic=5 rootwait " \"mtdparts=spi32766.0:1M(uboot)ro,64k(dtb)ro,4M(kernel)ro,-(rootfs) root=31:03 rw rootfstype=jffs2"

环境命令解析：

sf probe 0; //初始化Flash设备（CS拉低）
sf read 0x41800000 0x100000 0x10000;
//从flash0x100000（1MB）位置读取dtb放到内存0x41800000偏移处。
//如果是bsp的bin，则是0x41d00000
sf read 0x41000000 0x110000 0x400000;
//从flash0x110000（1MB+64KB）位置读取dtb放到内存0x41000000偏移处。
bootz 0x41000000 （内核地址）- 0x41800000（dtb地址）启动内核

启动参数解析

console=ttyS0,115200 earlyprintk panic=5 rootwait
//在串口0上输出信息
mtdparts=spi32766.0:1M(uboot)ro,64k(dtb)ro,4M(kernel)ro,-(rootfs)
root=31:03 rw rootfstype=jffs2
//spi32766.0是设备名，后面是分区大小，名字，读写属性。
root=31:03表示根文件系统是mtd3；jffs2格式

编译uboot

make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- LicheePi_Zero_defconfig
#or make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- LicheePi_Zero_800x480LCD_defconfig
#or make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- LicheePi_Zero480x272LCD_defconfig
time make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- 2>&1 | tee build.log

会在目录下生成 u-boot-sunxi-with-spl.bin

linux内核编译配置

linux内核基于github上的版本https://github.com/Lichee-Pi/linux.git，分支为最新的zero-4.13.y

内核选项配置

首先执行make ARCH=arm licheepi_zero_defconfig定义常量菜单

然后执行 make ARCH=arm menuconfig 打开内核菜单配置，

进入到 Device Drivers --> Memory Technology Device (MTD) support ，

确保选择上mtd的 **<> Command line partition table parsing*
支持，该项目用来解析uboot传递过来的flash分区信息。

以及SPI-NOR 设备的支持。

添加对jffs2文件系统的支持，路径在
File systems --> Miscellaneous filesystems --> Journalling Flash File System v2 (JFFS2) support

设备树配置

修改dts配置添加spi flash节点

vi arch/arm/boot/dts/sun8i-v3s-licheepi-zero.dts

添加spi节点配置:

&spi0 {status ="okay";xt25f128b:xt25f128b@0 {compatible = "jedec,spi-nor";reg = <0x0>;spi-max-frequency = <50000000>;#address-cells = <1>;#size-cells = <1>;};};

型号列表在drivers/mtd/devices/m25p80.c文件中
这里的flash型号需要在下表之中，否则将无法识别：（注意容量也一定要对应）

static const struct spi_device_id m25p_ids[] = {/** Allow non-DT platform devices to bind to the "spi-nor" modalias, and* hack around the fact that the SPI core does not provide uevent* matching for .of_match_table*/{"spi-nor"},/** Entries not used in DTs that should be safe to drop after replacing* them with "spi-nor" in platform data.*/{"s25sl064a"},  {"w25x16"},     {"m25p10"},     {"m25px64"},/** Entries that were used in DTs without "jedec,spi-nor" fallback and* should be kept for backward compatibility.*/{"at25df321a"}, {"at25df641"},  {"at26df081a"},{"mx25l4005a"}, {"mx25l1606e"}, {"mx25l6405d"}, {"mx25l12805d"},{"mx25l25635e"},{"mx66l51235l"},{"n25q064"},    {"n25q128a11"}, {"n25q128a13"}, {"n25q512a"},{"s25fl256s1"}, {"s25fl512s"},  {"s25sl12801"}, {"s25fl008k"},{"s25fl064k"},{"sst25vf040b"},{"sst25vf016b"},{"sst25vf032b"},{"sst25wf040"},{"m25p40"},     {"m25p80"},     {"m25p16"},     {"m25p32"},{"m25p64"},     {"m25p128"},{"w25x80"},     {"w25x32"},     {"w25q32"},     {"w25q32dw"},{"w25q80bl"},   {"w25q128"},    {"w25q256"},/* Flashes that can't be detected using JEDEC */{"m25p05-nonjedec"},    {"m25p10-nonjedec"},    {"m25p20-nonjedec"},{"m25p40-nonjedec"},    {"m25p80-nonjedec"},    {"m25p16-nonjedec"},{"m25p32-nonjedec"},    {"m25p64-nonjedec"},    {"m25p128-nonjedec"},/* Everspin MRAMs (non-JEDEC) */{ "mr25h256" }, /* 256 Kib, 40 MHz */{ "mr25h10" },  /*   1 Mib, 40 MHz */{ "mr25h40" },  /*   4 Mib, 40 MHz */{ },
};

在上面我们没有找到相应的型号，所以我们需要手动添加上去。添加完如下

static const struct spi_device_id m25p_ids[] = {/** Allow non-DT platform devices to bind to the "spi-nor" modalias, and* hack around the fact that the SPI core does not provide uevent* matching for .of_match_table*/{"spi-nor"},/** Entries not used in DTs that should be safe to drop after replacing* them with "spi-nor" in platform data.*/{"s25sl064a"},  {"w25x16"},     {"m25p10"},     {"m25px64"},/** Entries that were used in DTs without "jedec,spi-nor" fallback and* should be kept for backward compatibility.*/{"at25df321a"}, {"at25df641"},  {"at26df081a"},{"mx25l4005a"}, {"mx25l1606e"}, {"mx25l6405d"}, {"mx25l12805d"},{"mx25l25635e"},{"mx66l51235l"},{"n25q064"},    {"n25q128a11"}, {"n25q128a13"}, {"n25q512a"},{"s25fl256s1"}, {"s25fl512s"},  {"s25sl12801"}, {"s25fl008k"},{"s25fl064k"},{"sst25vf040b"},{"sst25vf016b"},{"sst25vf032b"},{"sst25wf040"},{"m25p40"},     {"m25p80"},     {"m25p16"},     {"m25p32"},{"m25p64"},     {"m25p128"},{"w25x80"},     {"w25x32"},     {"w25q32"},     {"w25q32dw"},{"w25q80bl"},   {"w25q128"},    {"xt25f128b"},  {"w25q256"},/* Flashes that can't be detected using JEDEC */{"m25p05-nonjedec"},    {"m25p10-nonjedec"},    {"m25p20-nonjedec"},{"m25p40-nonjedec"},    {"m25p80-nonjedec"},    {"m25p16-nonjedec"},{"m25p32-nonjedec"},    {"m25p64-nonjedec"},    {"m25p128-nonjedec"},/* Everspin MRAMs (non-JEDEC) */{ "mr25h256" }, /* 256 Kib, 40 MHz */{ "mr25h10" },  /*   1 Mib, 40 MHz */{ "mr25h40" },  /*   4 Mib, 40 MHz */{ },
};

然后我们添加xt25f128b flash的相关信息。
编辑drivers/mtd/spi-nor/spi-nor.c文件
添加信息如下：

{“xt25f128b”,INFO(0x0b4018, 0x0, 64 * 1024, 256, SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) },

static const struct flash_info spi_nor_ids[] = {/* Atmel -- some are (confusingly) marketed as "DataFlash" */{ "at25fs010",  INFO(0x1f6601, 0, 32 * 1024,   4, SECT_4K) },{ "at25fs040",  INFO(0x1f6604, 0, 64 * 1024,   8, SECT_4K) },{ "at25df041a", INFO(0x1f4401, 0, 64 * 1024,   8, SECT_4K) },{ "at25df321",  INFO(0x1f4700, 0, 64 * 1024,  64, SECT_4K) },{ "at25df321a", INFO(0x1f4701, 0, 64 * 1024,  64, SECT_4K) },{ "at25df641",  INFO(0x1f4800, 0, 64 * 1024, 128, SECT_4K) },{ "at26f004",   INFO(0x1f0400, 0, 64 * 1024,  8, SECT_4K) },{ "at26df081a", INFO(0x1f4501, 0, 64 * 1024, 16, SECT_4K) },{ "at26df161a", INFO(0x1f4601, 0, 64 * 1024, 32, SECT_4K) },{ "at26df321",  INFO(0x1f4700, 0, 64 * 1024, 64, SECT_4K) },{ "at45db081d", INFO(0x1f2500, 0, 64 * 1024, 16, SECT_4K) },/* EON -- en25xxx */{ "en25f32",    INFO(0x1c3116, 0, 64 * 1024,   64, SECT_4K) },{ "en25p32",    INFO(0x1c2016, 0, 64 * 1024,   64, 0) },{ "en25q32b",   INFO(0x1c3016, 0, 64 * 1024,   64, 0) },{ "en25p64",    INFO(0x1c2017, 0, 64 * 1024,  128, 0) },{ "en25q64",    INFO(0x1c3017, 0, 64 * 1024,  128, SECT_4K) },{ "en25qh128",  INFO(0x1c7018, 0, 64 * 1024,  256, 0) },{ "en25qh256",  INFO(0x1c7019, 0, 64 * 1024,  512, 0) },{ "en25s64",  INFO(0x1c3817, 0, 64 * 1024,  128, SECT_4K) },/* ESMT */{ "f25l32pa", INFO(0x8c2016, 0, 64 * 1024, 64, SECT_4K) },/* Everspin */{ "mr25h256", CAT25_INFO( 32 * 1024, 1, 256, 2, SPI_NOR_NO_ERASE | SPI_NOR_NO_FR) },{ "mr25h10",  CAT25_INFO(128 * 1024, 1, 256, 3, SPI_NOR_NO_ERASE | SPI_NOR_NO_FR) },{ "mr25h40",  CAT25_INFO(512 * 1024, 1, 256, 3, SPI_NOR_NO_ERASE | SPI_NOR_NO_FR) },/* Fujitsu */{ "mb85rs1mt", INFO(0x047f27, 0, 128 * 1024, 1, SPI_NOR_NO_ERASE) },/* GigaDevice */{"gd25q32", INFO(0xc84016, 0, 64 * 1024,  64,SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ |SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB)},{"gd25q64", INFO(0xc84017, 0, 64 * 1024, 128,SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ |SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB)},{"gd25lq64c", INFO(0xc86017, 0, 64 * 1024, 128,SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ |SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB)},{"gd25q128", INFO(0xc84018, 0, 64 * 1024, 256,SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ |SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB)},/* Intel/Numonyx -- xxxs33b */{ "160s33b",  INFO(0x898911, 0, 64 * 1024,  32, 0) },{ "320s33b",  INFO(0x898912, 0, 64 * 1024,  64, 0) },{ "640s33b",  INFO(0x898913, 0, 64 * 1024, 128, 0) },/* ISSI */{ "is25cd512", INFO(0x7f9d20, 0, 32 * 1024,   2, SECT_4K) },/* Macronix */{ "mx25l512e",   INFO(0xc22010, 0, 64 * 1024,   1, SECT_4K) },{ "mx25l2005a",  INFO(0xc22012, 0, 64 * 1024,   4, SECT_4K) },{ "mx25l4005a",  INFO(0xc22013, 0, 64 * 1024,   8, SECT_4K) },{ "mx25l8005",   INFO(0xc22014, 0, 64 * 1024,  16, 0) },{ "mx25l1606e",  INFO(0xc22015, 0, 64 * 1024,  32, SECT_4K) },{ "mx25l3205d",  INFO(0xc22016, 0, 64 * 1024,  64, SECT_4K) },{ "mx25l3255e",  INFO(0xc29e16, 0, 64 * 1024,  64, SECT_4K) },{ "mx25l6405d",  INFO(0xc22017, 0, 64 * 1024, 128, SECT_4K) },{ "mx25u6435f",  INFO(0xc22537, 0, 64 * 1024, 128, SECT_4K) },{ "mx25l12805d", INFO(0xc22018, 0, 64 * 1024, 256, 0) },{ "mx25l12855e", INFO(0xc22618, 0, 64 * 1024, 256, 0) },{ "mx25l25635e", INFO(0xc22019, 0, 64 * 1024, 512, 0) },{ "mx25u25635f", INFO(0xc22539, 0, 64 * 1024, 512, SECT_4K) },{ "mx25l25655e", INFO(0xc22619, 0, 64 * 1024, 512, 0) },{ "mx66l51235l", INFO(0xc2201a, 0, 64 * 1024, 1024, SPI_NOR_QUAD_READ) },{ "mx66l1g55g",  INFO(0xc2261b, 0, 64 * 1024, 2048, SPI_NOR_QUAD_READ) },/* Micron */{ "n25q016a",   INFO(0x20bb15, 0, 64 * 1024,   32, SECT_4K | SPI_NOR_QUAD_READ) },{ "n25q032",  INFO(0x20ba16, 0, 64 * 1024,   64, SPI_NOR_QUAD_READ) },{ "n25q032a",   INFO(0x20bb16, 0, 64 * 1024,   64, SPI_NOR_QUAD_READ) },{ "n25q064",     INFO(0x20ba17, 0, 64 * 1024,  128, SECT_4K | SPI_NOR_QUAD_READ) },{ "n25q064a",    INFO(0x20bb17, 0, 64 * 1024,  128, SECT_4K | SPI_NOR_QUAD_READ) },{ "n25q128a11",  INFO(0x20bb18, 0, 64 * 1024,  256, SECT_4K | SPI_NOR_QUAD_READ) },{ "n25q128a13",  INFO(0x20ba18, 0, 64 * 1024,  256, SECT_4K | SPI_NOR_QUAD_READ) },{ "n25q256a",    INFO(0x20ba19, 0, 64 * 1024,  512, SECT_4K | SPI_NOR_QUAD_READ) },{ "n25q512a",    INFO(0x20bb20, 0, 64 * 1024, 1024, SECT_4K | USE_FSR | SPI_NOR_QUAD_READ) },{ "n25q512ax3",  INFO(0x20ba20, 0, 64 * 1024, 1024, SECT_4K | USE_FSR | SPI_NOR_QUAD_READ) },{ "n25q00",      INFO(0x20ba21, 0, 64 * 1024, 2048, SECT_4K | USE_FSR | SPI_NOR_QUAD_READ) },{ "n25q00a",     INFO(0x20bb21, 0, 64 * 1024, 2048, SECT_4K | USE_FSR | SPI_NOR_QUAD_READ) },/* PMC */{ "pm25lv512",   INFO(0,        0, 32 * 1024,    2, SECT_4K_PMC) },{ "pm25lv010",   INFO(0,        0, 32 * 1024,    4, SECT_4K_PMC) },{ "pm25lq032",   INFO(0x7f9d46, 0, 64 * 1024,   64, SECT_4K) },/* Spansion -- single (large) sector size only, at least* for the chips listed here (without boot sectors).*/{ "s25sl032p",  INFO(0x010215, 0x4d00,  64 * 1024,  64, SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) },{ "s25sl064p",  INFO(0x010216, 0x4d00,  64 * 1024, 128, SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) },{ "s25fl256s0", INFO(0x010219, 0x4d00, 256 * 1024, 128, 0) },{ "s25fl256s1", INFO(0x010219, 0x4d01,  64 * 1024, 512, SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) },{ "s25fl512s",  INFO(0x010220, 0x4d00, 256 * 1024, 256, SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) },{ "s70fl01gs",  INFO(0x010221, 0x4d00, 256 * 1024, 256, 0) },{ "s25sl12800", INFO(0x012018, 0x0300, 256 * 1024,  64, 0) },{ "s25sl12801", INFO(0x012018, 0x0301,  64 * 1024, 256, 0) },{ "s25fl128s",   INFO6(0x012018, 0x4d0180, 64 * 1024, 256, SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) },{ "s25fl129p0", INFO(0x012018, 0x4d00, 256 * 1024,  64, SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) },{ "s25fl129p1", INFO(0x012018, 0x4d01,  64 * 1024, 256, SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) },{ "s25sl004a",  INFO(0x010212,      0,  64 * 1024,   8, 0) },{ "s25sl008a",  INFO(0x010213,      0,  64 * 1024,  16, 0) },{ "s25sl016a",  INFO(0x010214,      0,  64 * 1024,  32, 0) },{ "s25sl032a",  INFO(0x010215,      0,  64 * 1024,  64, 0) },{ "s25sl064a",  INFO(0x010216,      0,  64 * 1024, 128, 0) },{ "s25fl004k",  INFO(0xef4013,      0,  64 * 1024,   8, SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) },{ "s25fl008k",  INFO(0xef4014,      0,  64 * 1024,  16, SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) },{ "s25fl016k",  INFO(0xef4015,      0,  64 * 1024,  32, SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) },{ "s25fl064k",  INFO(0xef4017,      0,  64 * 1024, 128, SECT_4K) },{ "s25fl116k",  INFO(0x014015,      0,  64 * 1024,  32, SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) },{ "s25fl132k",  INFO(0x014016,      0,  64 * 1024,  64, SECT_4K) },{ "s25fl164k",  INFO(0x014017,      0,  64 * 1024, 128, SECT_4K) },{ "s25fl204k",  INFO(0x014013,      0,  64 * 1024,   8, SECT_4K | SPI_NOR_DUAL_READ) },{ "s25fl208k",  INFO(0x014014,      0,  64 * 1024,  16, SECT_4K | SPI_NOR_DUAL_READ) },/* SST -- large erase sizes are "overlays", "sectors" are 4K */{ "sst25vf040b", INFO(0xbf258d, 0, 64 * 1024,  8, SECT_4K | SST_WRITE) },{ "sst25vf080b", INFO(0xbf258e, 0, 64 * 1024, 16, SECT_4K | SST_WRITE) },{ "sst25vf016b", INFO(0xbf2541, 0, 64 * 1024, 32, SECT_4K | SST_WRITE) },{ "sst25vf032b", INFO(0xbf254a, 0, 64 * 1024, 64, SECT_4K | SST_WRITE) },{ "sst25vf064c", INFO(0xbf254b, 0, 64 * 1024, 128, SECT_4K) },{ "sst25wf512",  INFO(0xbf2501, 0, 64 * 1024,  1, SECT_4K | SST_WRITE) },{ "sst25wf010",  INFO(0xbf2502, 0, 64 * 1024,  2, SECT_4K | SST_WRITE) },{ "sst25wf020",  INFO(0xbf2503, 0, 64 * 1024,  4, SECT_4K | SST_WRITE) },{ "sst25wf020a", INFO(0x621612, 0, 64 * 1024,  4, SECT_4K) },{ "sst25wf040b", INFO(0x621613, 0, 64 * 1024,  8, SECT_4K) },{ "sst25wf040",  INFO(0xbf2504, 0, 64 * 1024,  8, SECT_4K | SST_WRITE) },{ "sst25wf080",  INFO(0xbf2505, 0, 64 * 1024, 16, SECT_4K | SST_WRITE) },/* ST Microelectronics -- newer production may have feature updates */{ "m25p05",  INFO(0x202010,  0,  32 * 1024,   2, 0) },{ "m25p10",  INFO(0x202011,  0,  32 * 1024,   4, 0) },{ "m25p20",  INFO(0x202012,  0,  64 * 1024,   4, 0) },{ "m25p40",  INFO(0x202013,  0,  64 * 1024,   8, 0) },{ "m25p80",  INFO(0x202014,  0,  64 * 1024,  16, 0) },{ "m25p16",  INFO(0x202015,  0,  64 * 1024,  32, 0) },{ "m25p32",  INFO(0x202016,  0,  64 * 1024,  64, 0) },{ "m25p64",  INFO(0x202017,  0,  64 * 1024, 128, 0) },{ "m25p128", INFO(0x202018,  0, 256 * 1024,  64, 0) },{ "m25p05-nonjedec",  INFO(0, 0,  32 * 1024,   2, 0) },{ "m25p10-nonjedec",  INFO(0, 0,  32 * 1024,   4, 0) },{ "m25p20-nonjedec",  INFO(0, 0,  64 * 1024,   4, 0) },{ "m25p40-nonjedec",  INFO(0, 0,  64 * 1024,   8, 0) },{ "m25p80-nonjedec",  INFO(0, 0,  64 * 1024,  16, 0) },{ "m25p16-nonjedec",  INFO(0, 0,  64 * 1024,  32, 0) },{ "m25p32-nonjedec",  INFO(0, 0,  64 * 1024,  64, 0) },{ "m25p64-nonjedec",  INFO(0, 0,  64 * 1024, 128, 0) },{ "m25p128-nonjedec", INFO(0, 0, 256 * 1024,  64, 0) },{ "m45pe10", INFO(0x204011,  0, 64 * 1024,    2, 0) },{ "m45pe80", INFO(0x204014,  0, 64 * 1024,   16, 0) },{ "m45pe16", INFO(0x204015,  0, 64 * 1024,   32, 0) },{ "m25pe20", INFO(0x208012,  0, 64 * 1024,  4,       0) },{ "m25pe80", INFO(0x208014,  0, 64 * 1024, 16,       0) },{ "m25pe16", INFO(0x208015,  0, 64 * 1024, 32, SECT_4K) },{ "m25px16",    INFO(0x207115,  0, 64 * 1024, 32, SECT_4K) },{ "m25px32",    INFO(0x207116,  0, 64 * 1024, 64, SECT_4K) },{ "m25px32-s0", INFO(0x207316,  0, 64 * 1024, 64, SECT_4K) },{ "m25px32-s1", INFO(0x206316,  0, 64 * 1024, 64, SECT_4K) },{ "m25px64",    INFO(0x207117,  0, 64 * 1024, 128, 0) },{ "m25px80",    INFO(0x207114,  0, 64 * 1024, 16, 0) },/* Winbond -- w25x "blocks" are 64K, "sectors" are 4KiB */{ "w25x05", INFO(0xef3010, 0, 64 * 1024,  1,  SECT_4K) },{ "w25x10", INFO(0xef3011, 0, 64 * 1024,  2,  SECT_4K) },{ "w25x20", INFO(0xef3012, 0, 64 * 1024,  4,  SECT_4K) },{ "w25x40", INFO(0xef3013, 0, 64 * 1024,  8,  SECT_4K) },{ "w25x80", INFO(0xef3014, 0, 64 * 1024,  16, SECT_4K) },{ "w25x16", INFO(0xef3015, 0, 64 * 1024,  32, SECT_4K) },{ "w25x32", INFO(0xef3016, 0, 64 * 1024,  64, SECT_4K) },{ "w25q32", INFO(0xef4016, 0, 64 * 1024,  64, SECT_4K) },{"w25q32dw", INFO(0xef6016, 0, 64 * 1024,  64,SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ |SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB)},{ "w25x64", INFO(0xef3017, 0, 64 * 1024, 128, SECT_4K) },{ "w25q64", INFO(0xef4017, 0, 64 * 1024, 128, SECT_4K) },{"w25q64dw", INFO(0xef6017, 0, 64 * 1024, 128,SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ |SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB)},{"w25q128fw", INFO(0xef6018, 0, 64 * 1024, 256,SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ |SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB)},{ "w25q80", INFO(0xef5014, 0, 64 * 1024,  16, SECT_4K) },{ "w25q80bl", INFO(0xef4014, 0, 64 * 1024,  16, SECT_4K) },{ "w25q128", INFO(0xef4018, 0, 64 * 1024, 256, SECT_4K) },{"xt25f128b",INFO(0x0b4018, 0x0,  64 * 1024,   256, SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) },{ "w25q256", INFO(0xef4019, 0, 64 * 1024, 512, SECT_4K) },/* Catalyst / On Semiconductor -- non-JEDEC */{ "cat25c11", CAT25_INFO(  16, 8, 16, 1, SPI_NOR_NO_ERASE | SPI_NOR_NO_FR) },{ "cat25c03", CAT25_INFO(  32, 8, 16, 2, SPI_NOR_NO_ERASE | SPI_NOR_NO_FR) },{ "cat25c09", CAT25_INFO( 128, 8, 32, 2, SPI_NOR_NO_ERASE | SPI_NOR_NO_FR) },{ "cat25c17", CAT25_INFO( 256, 8, 32, 2, SPI_NOR_NO_ERASE | SPI_NOR_NO_FR) },{ "cat25128", CAT25_INFO(2048, 8, 64, 2, SPI_NOR_NO_ERASE | SPI_NOR_NO_FR) },{ },
};

开始编译

make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- -j32
make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- dtbs

准备镜像文件

下载根文件系统

首先选择rootfs文件系统，我是用的是群朋提供的最小根文件系统
rootfs-brmin.tar.gz，大小只有3M左右，我已经制作好了jff2.img，可以直接使用下载地址在

https://download.csdn.net/download/weixin_41869691/16291690

制作jffs2文件系统

Flash支持jffs2文件系统格式，所以需要使用此该rootfs制作jffs2文件系统镜像、

下载jffs2文件系统制作工具

apt-get install mtd-utils

解压 rootfs-brmin.tar.gz

tar xzvf rootfs-brmin.tar.gz

计算好jffs的大小，可以使用zero_imager里的 make_jffs2.sh 16 生成

总空间是16M-1M-64K-4M=0xAF0000

mkfs.jffs2 -s 0x100 -e 0x10000 -p 0xAF0000 -d rootfs/ -o jffs2.img

页大小0x100 256字节
块大小0x10000 64k
jffs2分区总空间0xAF0000
jffs2.img是生成的文件系统镜像。

最后将uboot，dtb，kernel，rootfs打包成一个系统镜像，命令如下；

#!/bin/sh
dd if=/dev/zero of=flashimg.bin bs=1M count=16
dd if=u-boot-sunxi-with-spl.bin of=flashimg.bin bs=1K conv=notrunc
dd if=sun8i-v3s-licheepi-zero.dtb of=flashimg.bin bs=1K seek=1024  conv=notrunc
dd if=zImage of=flashimg.bin bs=1K seek=1088  conv=notrunc
dd if=jffs2.img of=flashimg.bin  bs=1K seek=5184  conv=notrunc

第一步：生成一个空文件，大小是16MB
第二步：将uboot添加到文件开头
第三步：将dtb放到1M偏移处
第四步：将kernel放到1M+64K偏移处

第五步：将rootfs放到1M+64K+4M偏移处

偏移大小是seek，单位是KB。

执行完毕后生成镜像文件 flashimg.bin

烧写镜像

下载sunxiflash烧写工具

git clone -b spi-rebase https://github.com/Icenowy/sunxi-tools.git

note

注意是spi-rebase分支。

进入工具目录执行 make && sudo make install

如果出现：*fel_lib.c:26:20: fatal error: libusb.h: No such file or
directory*，那需要安装libusb：

sudo apt-get install libusb-1.0-0-dev

进入fel模式

Zero有一个usb下载模式称为fel模式，进入fel模式有下面几种方式：

TF卡和spi flash 同时没有可启动镜像;

也就是说你不插卡，且焊接的是新的或者没有有效镜像的spi
flash，那就上电自动进入fel下载模式
TF卡中有进入fel模式的特殊固件 fel-sdboot.sunxi

如果你的spiflash已经有了启动镜像，那么需要在TF卡中烧入一个sunxi提供的
启动工具（
dd if=fel-sdboot.sunxi of=/dev/mmcblk0 bs=1024 seek=8 ），
那么插入该TF卡启动会进入fel模式；
上电时SPI_MISO拉低到地

该引脚为boot引脚，上电时出于低电平即会进入fel下载模式。

sunxi-fel的操作

进入fel模式后使用usb数据线连接pc和zero,即可进行操作。

sudo sunxi-fel version      #查看连接的cpu信息
AWUSBFEX soc=00001681(V3s) 00000001 ver=0001 44 08 scratchpad=00007e00 00000000 00000000
sudo sunxi-fel spiflash-info    #显示flash信息
Manufacturer: Unknown (C2h), model: 20h, size: 33554432 bytes.

执行如下命令烧入我们前边制作好的镜像文件

sudo sunxi-fel -p spiflash-write 0 flashimg.bin
# -p 显示进度条
#   spiflash-info           Retrieves basic information
#   spiflash-hex[dump] addr length  Dumps SPI flash region in hex
#   spiflash-read addr length file  Write SPI flash contents into file
#   spiflash-write addr file    Store file contents into SPI flash

SPI flash下载速度约50KB/s，等待5分钟（16MB）或者10分钟（32MB），烧写完成，如果一切顺利，重新上电zero那么就会进入linux系统了，账号是root没有密码。

附录：启动日志

U-Boot SPL 2017.01-rc2-00073-gdd6e8740dc-dirty (Mar 28 2021 - 01:54:30)
DRAM: 64 MiB
Trying to boot from sunxi SPIU-Boot 2017.01-rc2-00073-gdd6e8740dc-dirty (Mar 28 2021 - 01:54:30 +0800) Allwinner TechnologyCPU:   Allwinner V3s (SUN8I 1681)
Model: Lichee Pi Zero
DRAM:  64 MiB
MMC:   SUNXI SD/MMC: 0
SF: Detected xt25f128b with page size 256 Bytes, erase size 4 KiB, total 16 MiB
*** Warning - bad CRC, using default environmentIn:    serial@01c28000
Out:   serial@01c28000
Err:   serial@01c28000U-Boot 2017.01-rc2-00073-gdd6e8740dc-dirty (Mar 28 2021 - 01:54:30 +0800) Allwinner TechnologyCPU:   Allwinner V3s (SUN8I 1681)
Model: Lichee Pi Zero
DRAM:  64 MiB
MMC:   SUNXI SD/MMC: 0
SF: Detected xt25f128b with page size 256 Bytes, erase size 4 KiB, total 16 MiB
*** Warning - bad CRC, using default environmentIn:    serial@01c28000
Out:   serial@01c28000
Err:   serial@01c28000
Net:   No ethernet found.
starting USB...
No controllers found
Hit any key to stop autoboot:  0
SF: Detected xt25f128b with page size 256 Bytes, erase size 4 KiB, total 16 MiB
device 0 offset 0x100000, size 0x10000
SF: 65536 bytes @ 0x100000 Read: OK
device 0 offset 0x110000, size 0x400000
SF: 4194304 bytes @ 0x110000 Read: OK
## Flattened Device Tree blob at 41800000Booting using the fdt blob at 0x41800000Loading Device Tree to 42dfa000, end 42dff206 ... OKStarting kernel ...[    0.000000] Booting Linux on physical CPU 0x0
[    0.000000] Linux version 4.10.15-licheepi-zero+ (nihao@nihao-XiaoXin) (gcc version 6.3.1 20170404 (Linaro GCC 6.3-2017.05) ) #6 SMP Sun Mar 28 08:51:06 CST     2021
[    0.000000] CPU: ARMv7 Processor [410fc075] revision 5 (ARMv7), cr=10c5387d
[    0.000000] CPU: div instructions available: patching division code
[    0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache
[    0.000000] OF: fdt:Machine model: Lichee Pi Zero
[    0.000000] Memory policy: Data cache writealloc
[    0.000000] percpu: Embedded 14 pages/cpu @c3f63000 s24716 r8192 d24436 u57344
[    0.000000] Built 1 zonelists in Zone order, mobility grouping on.  Total pages: 16256
[    0.000000] Kernel command line: console=ttyS0,115200 earlyprintk panic=5 rootwait mtdparts=spi32766.0:1M(uboot)ro,64k(dtb)ro,4M(kernel)ro,-(rootfs)     root=31:03 rw rootfstype=jffs2
[    0.000000] PID hash table entries: 256 (order: -2, 1024 bytes)
[    0.000000] Dentry cache hash table entries: 8192 (order: 3, 32768 bytes)
[    0.000000] Inode-cache hash table entries: 4096 (order: 2, 16384 bytes)
[    0.000000] Memory: 55152K/65536K available (6144K kernel code, 199K rwdata, 1412K rodata, 1024K init, 262K bss, 10384K reserved, 0K cma-reserved, 0K highmem)
[    0.000000] Virtual kernel memory layout:
[    0.000000]     vector  : 0xffff0000 - 0xffff1000   (   4 kB)
[    0.000000]     fixmap  : 0xffc00000 - 0xfff00000   (3072 kB)
[    0.000000]     vmalloc : 0xc4800000 - 0xff800000   ( 944 MB)
[    0.000000]     lowmem  : 0xc0000000 - 0xc4000000   (  64 MB)
[    0.000000]     pkmap   : 0xbfe00000 - 0xc0000000   (   2 MB)
[    0.000000]     modules : 0xbf000000 - 0xbfe00000   (  14 MB)
[    0.000000]       .text : 0xc0008000 - 0xc0700000   (7136 kB)
[    0.000000]       .init : 0xc0900000 - 0xc0a00000   (1024 kB)
[    0.000000]       .data : 0xc0a00000 - 0xc0a31f00   ( 200 kB)
[    0.000000]        .bss : 0xc0a33000 - 0xc0a7484c   ( 263 kB)
[    0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
[    0.000000] Hierarchical RCU implementation.
[    0.000000]  Build-time adjustment of leaf fanout to 32.
[    0.000000]  RCU restricting CPUs from NR_CPUS=8 to nr_cpu_ids=1.
[    0.000000] RCU: Adjusting geometry for rcu_fanout_leaf=32, nr_cpu_ids=1
[    0.000000] NR_IRQS:16 nr_irqs:16 16
[    0.000000] arm_arch_timer: Architected cp15 timer(s) running at 24.00MHz (virt).
[    0.000000] clocksource: arch_sys_counter: mask: 0xffffffffffffff max_cycles: 0x588fe9dc0, max_idle_ns: 440795202592 ns
[    0.000007] sched_clock: 56 bits at 24MHz, resolution 41ns, wraps every 4398046511097ns
[    0.000018] Switching to timer-based delay loop, resolution 41ns
[    0.000138] clocksource: timer: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 79635851949 ns
[    0.000343] Console: colour dummy device 80x30
[    0.000379] Calibrating delay loop (skipped), value calculated using timer frequency.. 48.00 BogoMIPS (lpj=240000)
[    0.000393] pid_max: default: 32768 minimum: 301
[    0.000528] Mount-cache hash table entries: 1024 (order: 0, 4096 bytes)
[    0.000539] Mountpoint-cache hash table entries: 1024 (order: 0, 4096 bytes)
[    0.001231] CPU: Testing write buffer coherency: ok
[    0.001634] /cpus/cpu@0 missing clock-frequency property
[    0.001658] CPU0: thread -1, cpu 0, socket 0, mpidr 80000000
[    0.002018] Setting up static identity map for 0x40100000 - 0x40100058
[    0.002763] smp: Bringing up secondary CPUs ...
[    0.002781] smp: Brought up 1 node, 1 CPU
[    0.002790] SMP: Total of 1 processors activated (48.00 BogoMIPS).
[    0.002797] CPU: All CPU(s) started in SVC mode.
[    0.003584] devtmpfs: initialized
[    0.006342] VFP support v0.3: implementor 41 architecture 2 part 30 variant 7 rev 5
[    0.006638] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns
[    0.006665] futex hash table entries: 256 (order: 2, 16384 bytes)
[    0.006819] pinctrl core: initialized pinctrl subsystem
[    0.007825] NET: Registered protocol family 16
[    0.008277] DMA: preallocated 256 KiB pool for atomic coherent allocations
[    0.009494] hw-breakpoint: found 5 (+1 reserved) breakpoint and 4 watchpoint registers.
[    0.009510] hw-breakpoint: maximum watchpoint size is 8 bytes.
[    0.020909] SCSI subsystem initialized
[    0.021188] usbcore: registered new interface driver usbfs
[    0.021249] usbcore: registered new interface driver hub
[    0.021344] usbcore: registered new device driver usb
[    0.021581] pps_core: LinuxPPS API ver. 1 registered
[    0.021591] pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti <giometti@linux.it>
[    0.021614] PTP clock support registered
[    0.021817] Advanced Linux Sound Architecture Driver Initialized.
[    0.023618] clocksource: Switched to clocksource arch_sys_counter
[    0.034049] NET: Registered protocol family 2
[    0.034678] TCP established hash table entries: 1024 (order: 0, 4096 bytes)
[    0.034710] TCP bind hash table entries: 1024 (order: 1, 8192 bytes)
[    0.034734] TCP: Hash tables configured (established 1024 bind 1024)
[    0.034821] UDP hash table entries: 256 (order: 1, 8192 bytes)
[    0.034868] UDP-Lite hash table entries: 256 (order: 1, 8192 bytes)
[    0.035077] NET: Registered protocol family 1
[    0.035696] RPC: Registered named UNIX socket transport module.
[    0.035716] RPC: Registered udp transport module.
[    0.035721] RPC: Registered tcp transport module.
[    0.035727] RPC: Registered tcp NFSv4.1 backchannel transport module.
[    0.037888] workingset: timestamp_bits=30 max_order=14 bucket_order=0
[    0.046839] NFS: Registering the id_resolver key type
[    0.046892] Key type id_resolver registered
[    0.046899] Key type id_legacy registered
[    0.046946] jffs2: version 2.2. (NAND) © 2001-2006 Red Hat, Inc.
[    0.051417] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 249)
[    0.051438] io scheduler noop registered
[    0.051445] io scheduler deadline registered
[    0.051651] io scheduler cfq registered (default)
[    0.055818] sun8i-v3s-pinctrl 1c20800.pinctrl: initialized sunXi PIO driver
[    0.123327] Serial: 8250/16550 driver, 8 ports, IRQ sharing disabled
[    0.126634] console [ttyS0] disabled
[    0.146912] 1c28000.serial: ttyS0 at MMIO 0x1c28000 (irq = 31, base_baud = 1500000) is a U6_16550A
[    0.711492] console [ttyS0] enabled
[    0.715681] [drm] Initialized
[    0.721398] m25p80 spi32766.0: xt25f128b (16384 Kbytes)
[    0.726750] 4 cmdlinepart partitions found on MTD device spi32766.0
[    0.733012] Creating 4 MTD partitions on "spi32766.0":
[    0.738182] 0x000000000000-0x000000100000 : "uboot"
[    0.743783] 0x000000100000-0x000000110000 : "dtb"
[    0.748907] 0x000000110000-0x000000510000 : "kernel"
[    0.754338] 0x000000510000-0x000001000000 : "rootfs"
[    0.760036] libphy: Fixed MDIO Bus: probed
[    0.764482] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[    0.771009] ehci-platform: EHCI generic platform driver
[    0.776367] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
[    0.782564] ohci-platform: OHCI generic platform driver
[    0.788269] udc-core: couldn't find an available UDC - added [g_cdc] to list of pending drivers
[    0.797943] sun6i-rtc 1c20400.rtc: rtc core: registered rtc-sun6i as rtc0
[    0.804824] sun6i-rtc 1c20400.rtc: RTC enabled
[    0.809359] i2c /dev entries driver
[    0.814225] input: ns2009_ts as /devices/platform/soc/1c2ac00.i2c/i2c-0/0-0048/input/input0
[    0.823891] sunxi-wdt 1c20ca0.watchdog: Watchdog enabled (timeout=16 sec, nowayout=0)
[    0.883660] sunxi-mmc 1c0f000.mmc: base:0xc48ae000 irq:23
[    0.889996] usbcore: registered new interface driver usbhid
[    0.895655] usbhid: USB HID core driver
[    0.901162] NET: Registered protocol family 17
[    0.905844] Key type dns_resolver registered
[    0.910261] Registering SWP/SWPB emulation handler
[    0.921360] usb_phy_generic.0.auto supply vcc not found, using dummy regulator
[    0.929304] musb-hdrc musb-hdrc.1.auto: MUSB HDRC host driver
[    0.935148] musb-hdrc musb-hdrc.1.auto: new USB bus registered, assigned bus number 1
[    0.946351] hub 1-0:1.0: USB hub found
[    0.950215] hub 1-0:1.0: 1 port detected
[    0.955007] using random self ethernet address
[    0.959500] using random host ethernet address
[    0.965051] usb0: HOST MAC 0a:4c:0a:fb:ad:c7
[    0.969383] usb0: MAC 36:23:1c:5c:34:1c
[    0.973259] g_cdc gadget: CDC Composite Gadget, version: King Kamehameha Day 2008
[    0.980840] g_cdc gadget: g_cdc ready
[    0.984859] sun6i-rtc 1c20400.rtc: setting system clock to 1970-01-01 00:00:23 UTC (23)
[    0.993097] vcc3v0: disabling
[    0.996144] vcc5v0: disabling
[    0.999113] ALSA device list:
[    1.002075]   No soundcards found.
[    1.007541] random: fast init done
[    1.049938] random: crng init done
[    1.580278] VFS: Mounted root (jffs2 filesystem) on device 31:3.
[    1.587278] devtmpfs: mounted
[    1.591420] Freeing unused kernel memory: 1024K
Starting logging: OK
Starting mdev...
modprobe: can't change directory to '/lib/modules': No such file or directory
[    5.688048] ------------[ cut here ]------------
[    5.692711] WARNING: CPU: 0 PID: 86 at drivers/mtd/spi-nor/spi-nor.c:1183 spi_nor_write+0x138/0x1b4
[    5.701820] Writing at offset 216 into a NOR page. Writing partial pages may decrease reliability and increase wear of NOR flash.
[    5.701825] Modules linked in:
[    5.716550] CPU: 0 PID: 86 Comm: touch Not tainted 4.10.15-licheepi-zero+ #6
[    5.723585] Hardware name: Allwinner sun8i Family
[    5.728313] [<c010e2fc>] (unwind_backtrace) from [<c010b098>] (show_stack+0x10/0x14)
[    5.736055] [<c010b098>] (show_stack) from [<c03465c4>] (dump_stack+0x84/0x98)
[    5.743277] [<c03465c4>] (dump_stack) from [<c011b634>] (__warn+0xe8/0x100)
[    5.750235] [<c011b634>] (__warn) from [<c011b684>] (warn_slowpath_fmt+0x38/0x48)
[    5.757715] [<c011b684>] (warn_slowpath_fmt) from [<c0452fbc>] (spi_nor_write+0x138/0x1b4)
[    5.765973] [<c0452fbc>] (spi_nor_write) from [<c044b454>] (mtd_writev+0xa4/0xec)
[    5.773456] [<c044b454>] (mtd_writev) from [<c02fbec8>] (jffs2_flash_writev+0x414/0x4b0)
[    5.781541] [<c02fbec8>] (jffs2_flash_writev) from [<c02f4d48>] (jffs2_write_dnode+0xd4/0x328)
[    5.790145] [<c02f4d48>] (jffs2_write_dnode) from [<c02f9458>] (jffs2_do_setattr+0x280/0x558)
[    5.798661] [<c02f9458>] (jffs2_do_setattr) from [<c02f9754>] (jffs2_setattr+0x24/0x48)
[    5.806660] [<c02f9754>] (jffs2_setattr) from [<c020d990>] (notify_change+0x1c4/0x3d0)
[    5.814572] [<c020d990>] (notify_change) from [<c021e65c>] (utimes_common+0xa8/0x170)
[    5.822394] [<c021e65c>] (utimes_common) from [<c021e7d4>] (do_utimes+0xb0/0x144)
[    5.829869] [<c021e7d4>] (do_utimes) from [<c021ea10>] (SyS_futimesat+0xd0/0xfc)
[    5.837259] [<c021ea10>] (SyS_futimesat) from [<c0107580>] (ret_fast_syscall+0x0/0x3c)
[    5.845234] ---[ end trace d947ef19d0d7cd8d ]---
Initializing random number generator... done.
Starting network: OKWelcome to Lichee Pi
Lichee login:

附录：sunxi-fel帮助说明

sunxi-fel v1.4.1-87-g78a7566Usage: sunxi-fel [options] command arguments--- [command---]-h, --help          Print this usage summary and exit-v, --verbose           Verbose logging-p, --progress          "write" transfers show a progress bar-l, --list          Enumerate all (USB) FEL devices and exit-d, --dev bus:devnum        Use specific USB bus and device number--sid SID           Select device by SID key (exact match)spl file            Load and execute U-Boot SPLIf file additionally contains a main U-Boot binary(u-boot-sunxi-with-spl.bin), this command also transfers thatto memory (default address from image), but won't execute it.uboot file-with-spl     like "spl", but actually starts U-BootU-Boot execution will take place when the fel utility exits.This allows combining "uboot" with further "write" commands(to transfer other files needed for the boot).hex[dump] address length    Dumps memory region in hexdump address length     Binary memory dumpexe[cute] address       Call function addressreset64 address         RMR request for AArch64 warm bootmemmove dest source size    Copy <size> bytes within device memoryreadl address           Read 32-bit value from device memorywritel address value        Write 32-bit value to device memoryread address length file    Write memory contents into filewrite address file      Store file contents into memorywrite-with-progress addr file   "write" with progress barwrite-with-gauge addr file  Output progress for "dialog --gauge"write-with-xgauge addr file Extended gauge output (updates prompt)multi[write] # addr file ---    "write-with-progress" multiple files,sharing a common progress statusmulti[write]-with-gauge --- like their "write-with-*" counterpart,multi[write]-with-xgauge ---      but following the 'multi' syntax:<#> addr file [addr file [---]]echo-gauge "some text"      Update prompt/caption for gauge outputver[sion]           Show BROM versionsid             Retrieve and output 128-bit SID keyclear address length        Clear memoryfill address length value   Fill memoryspiflash-info           Retrieves basic informationspiflash-hex[dump] addr length  Dumps SPI flash region in hexspiflash-read addr length file  Write SPI flash contents into filespiflash-write addr file    Store file contents into SPI flash

参考资料

http://blog.sina.com.cn/s/blog_5ed5a1f40100f3qq.html