Internal Used/Enable Falcon Mode
From ESS-WIKI
- We need to replace SPL and u-boot
git clone https://github.com/ADVANTECH-Corp/uboot-imx6.git cd uboot-imx6 git checkout QuickBoot
PS: Because we take fsl-image-qt5-imx6qrsb4411a1-20171121191640.rootfs.sdcard(2.92GB) as an example, so we need to modify u-boot to store kernel image and args .
./include/configs/mx6advantech_common.h
-#define CONFIG_SYS_MMCSD_RAW_MODE_ARGS_SECTOR 0x400000 /* 2G */ +#define CONFIG_SYS_MMCSD_RAW_MODE_ARGS_SECTOR 0x5D7FFF /* 2.9G */ #define CONFIG_SYS_MMCSD_RAW_MODE_ARGS_SECTORS (CONFIG_CMD_SPL_WRITE_SIZE / 512) #if 0 #define CONFIG_SYS_MMCSD_RAW_MODE_KERNEL_SECTOR 0x1000 /* 2MB */ #endif -#define CONFIG_SYS_MMCSD_RAW_MODE_KERNEL_SECTOR 0x400800 /* 2G+1M */ +#define CONFIG_SYS_MMCSD_RAW_MODE_KERNEL_SECTOR 0x5D87FF /* 2.9G+1M */
- Then compile u-boot and SPL and replace both of them.
- Use uImage intead of zImage, we need to re-compile kernel
make uImage LOADADDR=0x10008000 -j4
- Boot device to u-boot command line, and perform command as below:
setenv image uImage fatload mmc ${mmcdev}:${mmcpart} ${fdt_addr} ${fdt_file} fatload mmc ${mmcdev}:${mmcpart} ${loadaddr} ${image} setenv bootargs console=${console},${baudrate} ${smp} root=${mmcroot} ${bootargs} mmc write ${loadaddr} 0x5D87FF 0x4000 spl export fdt ${loadaddr} - ${fdt_addr} mmc write 18000000 0x5D7FFF 0x800 setenv boot_os 1 && saveenv && reset
- Then we can skip u-boot to load kernel and args on mmc.
- If we want to back to u-boot command line, we need to erase spi
flash_erase /dev/mtd0 0xC0000 16