1*4882a593SmuzhiyunBUBT (Burn ATF) command 2*4882a593Smuzhiyun-------------------------- 3*4882a593SmuzhiyunBubt command is used to burn a new ATF image to flash device. 4*4882a593Smuzhiyun 5*4882a593SmuzhiyunThe bubt command gets the following parameters: ATF file name, destination device and source device. 6*4882a593Smuzhiyunbubt [file-name] [destination [source]] 7*4882a593Smuzhiyun - file-name Image file name to burn. default = flash-image.bin 8*4882a593Smuzhiyun - destination Flash to burn to [spi, nand, mmc]. default = active flash 9*4882a593Smuzhiyun - source Source to load image from [tftp, usb]. default = tftp 10*4882a593Smuzhiyun 11*4882a593SmuzhiyunExamples: 12*4882a593Smuzhiyun bubt - Burn flash-image.bin from tftp to active flash 13*4882a593Smuzhiyun bubt latest-spi.bin nand - Burn latest-spi.bin from tftp to NAND flash 14*4882a593Smuzhiyun 15*4882a593SmuzhiyunNotes: 16*4882a593Smuzhiyun- For the TFTP interface set serverip and ipaddr. 17*4882a593Smuzhiyun- To burn image to SD/eMMC device, the target is defined 18*4882a593Smuzhiyun by parameters CONFIG_SYS_MMC_ENV_DEV and CONFIG_SYS_MMC_ENV_PART. 19*4882a593Smuzhiyun 20*4882a593SmuzhiyunBubt command details (burn image step by-step) 21*4882a593Smuzhiyun---------------------------------------------- 22*4882a593SmuzhiyunThis section describes bubt command flow: 23*4882a593Smuzhiyun 24*4882a593Smuzhiyun1. Fetch the requested ATF image from an available interface (USB/SD/SATA/XDB, etc.) 25*4882a593Smuzhiyun into the DRAM, and place it at <load_address> 26*4882a593Smuzhiyun Example: when using the FAT file system on USB flash device: 27*4882a593Smuzhiyun # usb reset 28*4882a593Smuzhiyun # fatls usb 0 (see files in device) 29*4882a593Smuzhiyun # fatload usb 0 <load_address> <file_name> 30*4882a593Smuzhiyun 31*4882a593Smuzhiyun2. Erase the target device: 32*4882a593Smuzhiyun - NAND: # nand erase 0 100000 33*4882a593Smuzhiyun - SPI: # sf probe 0 34*4882a593Smuzhiyun # sf erase 0 100000 35*4882a593Smuzhiyun - SD/eMMC: # mmc dev <dev_id> <boot_partition> 36*4882a593Smuzhiyun 37*4882a593SmuzhiyunNotes: 38*4882a593Smuzhiyun- The eMMC has 2 boot partitions (BOOT0 and BOOT1) and a user data partition (DATA). 39*4882a593Smuzhiyun The boot partitions are numbered as partition 1 and 2 in MMC driver. 40*4882a593Smuzhiyun Number 0 is used for user data partition and should not be utilized for storing 41*4882a593Smuzhiyun boot images and U-Boot environment in RAW mode since it will break file system 42*4882a593Smuzhiyun structures usually located here. 43*4882a593Smuzhiyun The default boot partition is BOOT0. It is selected by the following parameter: 44*4882a593Smuzhiyun CONFIG_SYS_MMC_ENV_PART=1 45*4882a593Smuzhiyun Valid values for this parameter are 1 for BOOT0 and 2 for BOOT1. 46*4882a593Smuzhiyun Please never use partition number 0 here! 47*4882a593Smuzhiyun The eMMC has 2 boot partitions (BOOT0 and BOOT1) and a user data partition (DATA). 48*4882a593Smuzhiyun The boot partitions are numbered as partition 1 and 2 in MMC driver. 49*4882a593Smuzhiyun Number 0 is used for user data partition and should not be utilized for storing 50*4882a593Smuzhiyun boot images and U-Boot environment in RAW mode since it will break file system 51*4882a593Smuzhiyun structures usually located here. 52*4882a593Smuzhiyun The default boot partition is BOOT0. It is selected by the following parameter: 53*4882a593Smuzhiyun CONFIG_SYS_MMC_ENV_PART=1 54*4882a593Smuzhiyun Valid values for this parameter are 1 for BOOT0 and 2 for BOOT1. 55*4882a593Smuzhiyun Please never use partition number 0 here! 56*4882a593Smuzhiyun- The partition number is ignored if the target device is SD card. 57*4882a593Smuzhiyun- The boot image offset starts at block 0 for eMMC and block 1 for SD devices. 58*4882a593Smuzhiyun The block 0 on SD devices is left for MBR storage. 59*4882a593Smuzhiyun 60*4882a593Smuzhiyun3. Write the ATF image: 61*4882a593Smuzhiyun - NAND: # nand write <load_address> 0 <ATF Size> 62*4882a593Smuzhiyun - SPI: # sf write <load_address> 0 <ATF Size> 63*4882a593Smuzhiyun - SD/eMMC: # mmc write <load_address> [0|1] <ATF Size>/<block_size> 64*4882a593Smuzhiyun 65