step
Welding flash chips (if more than 16M, the need to change the source programming tool)
solder pin, in order to see the serial data
Welding flash chip, to note the position of No. 1 pin, flash chip development board at the back, pin No. 1 is the position of the side close to the microphone
The following is a compilation step related, reference connection , note that the download source, spi flash mode selection
uboot
SPI-V3S clone -b Git-Experimental HTTPS: // github.com/Lichee-Pi/u-boot.git the make the ARCH = = the CROSS_COMPILE ARM ARM-Linux-gnueabihf- menuconfig Architecture SELECT , selected from the ARM Device the Drivers the SPI Support the Flash Hook choose the name of the manufacturer's own flash, where the election Macronix SPI flash support If you use more than 16MB flash, check the flash bank needs support options, otherwise it can only read 16MB
code include / configs / sun8i.h, add xxx before include
#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"
Compile
time make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- 2>&1 | tee build.log
Download linux kernel source
make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- licheepi_zero_defconfig
make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- menuconfig
Select
The Drivers Device <*> Memory Device Technology (the MTD) Support <*> the Command Line Partition Table parsing the project to parse flash uboot pass over the partition information. <*> SPI- NOR Device Support File Systems <*> Miscellaneous filesystems <*> Journalling Flash File System v2 (JFFS2) Support
code arch/arm/boot/dts/sun8i-v3s-licheepi-zero.dts
&spi0 { status ="okay"; mx25l25635e:mx25l25635e@0 { compatible = "jedec,spi-nor"; reg = <0x0>; spi-max-frequency = <50000000>; #address-cells = <1>; #size-cells = <1>; }; };
Compile
make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- -j4 make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- dtbs 东西在在 arch/arm/boot/zImage
rootfs, get off before generating the file system directly mkfs.jffs2
sudo mkfs.jffs2 -s 0x100 -e 0x10000 -p 0x1AF0000 -d ~/downloads/rootfs/ -o ../jffs2.img
Packaged mirror
dd if=/dev/zero of=flashimg.bin bs=1M count=32 dd if=$HOME/dev/embedded/lichee/zero/SPI_Flash/u-boot/u-boot-sunxi-with-spl.bin of=flashimg.bin bs=1K conv=notrunc dd if=$HOME/dev/embedded/lichee/zero/SPI_Flash/linux-zero-4.13.y/arch/arm/boot/dts/sun8i-v3s-licheepi-zero-dock.dtb of=flashimg.bin bs=1K seek=1024 conv=notrunc dd if=$HOME/dev/embedded/lichee/zero/SPI_Flash/linux-zero-4.13.y/arch/arm/boot/zImage of=flashimg.bin bs=1K seek=1088 conv=notrunc dd if=$HOME/dev/embedded/lichee/zero/SPI_Flash/jffs2.img of=flashimg.bin bs=1K seek=5184 conv=notrunc
Burned firmware
git clone -b spi-rebase https://github.com/Icenowy/sunxi-tools.git
Repair written question of more than 16M
code fel-spiflash.c, search
#define CMD_WRITE_ENABLE 0x06 和 aw_fel_spiflash_write_helper函数
Into the following section
#define CMD_WRITE_ENABLE 0x06 部分，改成如下 #define CMD_WRITE_ENABLE 0x06 #define SPI_FLASH_16MB_BOUN 0x1000000 # define CMD_BANKADDR_BRWR 0x17 //only SPANSION flash use it # define CMD_BANKADDR_BRRD 0x16 # define CMD_EXTNADDR_WREAR 0xC5 # define CMD_EXTNADDR_RDEAR 0xC8 size_t bank_curr = 0; void aw_fel_spiflash_write_helper(feldev_handle *dev, uint32_t offset, void *buf, size_t len, size_t erase_size, uint8_t erase_cmd, size_t program_size, uint8_t program_cmd) { uint8_t *buf8 = (uint8_t *)buf; size_t max_chunk_size = dev->soc_info->scratch_addr - dev->soc_info->spl_addr; size_t cmd_idx, bank_sel; if (max_chunk_size > 0x1000) max_chunk_size = 0x1000; uint8_t *cmdbuf = malloc(max_chunk_size); cmd_idx = 0; prepare_spi_batch_data_transfer(dev, dev->soc_info->spl_addr); //add bank support { cmd_idx = 0; bank_sel = offset /SPI_FLASH_16MB_BOUN; if (bank_sel == bank_curr) goto bar_end; /* Emit write enable command */ cmdbuf[cmd_idx++] = 0; cmdbuf[cmd_idx++] = 1; cmdbuf[cmd_idx++] = CMD_WRITE_ENABLE; /* Emit write bank */ cmdbuf[cmd_idx++] = 0; cmdbuf[cmd_idx++] = 2; cmdbuf[cmd_idx++] = CMD_EXTNADDR_WREAR; cmdbuf[cmd_idx++] = offset >> 24; /* Emit wait for completion */ cmdbuf[cmd_idx++] = 0xFF; cmdbuf[cmd_idx++] = 0xFF; /* Emit the end marker */ cmdbuf[cmd_idx++] = 0; cmdbuf[cmd_idx++] = 0; aw_fel_write(dev, cmdbuf, dev->soc_info->spl_addr, cmd_idx); aw_fel_remotefunc_execute(dev, NULL); bar_end: bank_curr = bank_sel; } cmd_idx = 0; while (len > 0) { while (len > 0 && max_chunk_size - cmd_idx > program_size + 64) { if (offset % erase_size == 0) { /* Emit write enable command */ cmdbuf[cmd_idx++] = 0; cmdbuf[cmd_idx++] = 1; cmdbuf[cmd_idx++] = CMD_WRITE_ENABLE; /* Emit erase command */ cmdbuf[cmd_idx++] = 0; cmdbuf[cmd_idx++] = 4; cmdbuf[cmd_idx++] = erase_cmd; cmdbuf[cmd_idx++] = offset >> 16; cmdbuf[cmd_idx++] = offset >> 8; cmdbuf[cmd_idx++] = offset; /* Emit wait for completion */ cmdbuf[cmd_idx++] = 0xFF; cmdbuf[cmd_idx++] = 0xFF; } /* Emit write enable command */ cmdbuf[cmd_idx++] = 0; cmdbuf[cmd_idx++] = 1; cmdbuf[cmd_idx++] = CMD_WRITE_ENABLE; /* Emit page program command */ size_t write_count = program_size; if (write_count > len) write_count = len; cmdbuf[cmd_idx++] = (4 + write_count) >> 8; cmdbuf[cmd_idx++] = 4 + write_count; cmdbuf[cmd_idx++] = program_cmd; cmdbuf[cmd_idx++] = offset >> 16; cmdbuf[cmd_idx++] = offset >> 8; cmdbuf[cmd_idx++] = offset; memcpy(cmdbuf + cmd_idx, buf8, write_count); cmd_idx += write_count; buf8 += write_count; len -= write_count; offset += write_count; /* Emit wait for completion */ cmdbuf[cmd_idx++] = 0xFF; cmdbuf[cmd_idx++] = 0xFF; } /* Emit the end marker */ cmdbuf[cmd_idx++] = 0; cmdbuf[cmd_idx++] = 0; /* Flush */ aw_fel_write(dev, cmdbuf, dev->soc_info->spl_addr, cmd_idx); aw_fel_remotefunc_execute(dev, NULL); cmd_idx = 0; } free(cmdbuf); }
make
Burn
Test whether a flash device discovery sunxi - FEL Version sunxi -Fel SpiFlash -p-Write 0 ~ / dev / Embedded / Lichee / ZERO / SPI_Flash / flashimg.bin
After re-power, it is not there to see the serial output it