mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-08-19 08:28:51 +09:00
65 lines
2.9 KiB
Plaintext
65 lines
2.9 KiB
Plaintext
![]() |
BUBT (Burn ATF) command
|
||
|
--------------------------
|
||
|
Bubt command is used to burn a new ATF image to flash device.
|
||
|
|
||
|
The bubt command gets the following parameters: ATF file name, destination device and source device.
|
||
|
bubt [file-name] [destination [source]]
|
||
|
- file-name Image file name to burn. default = flash-image.bin
|
||
|
- destination Flash to burn to [spi, nand, mmc]. default = active flash
|
||
|
- source Source to load image from [tftp, usb]. default = tftp
|
||
|
|
||
|
Examples:
|
||
|
bubt - Burn flash-image.bin from tftp to active flash
|
||
|
bubt latest-spi.bin nand - Burn latest-spi.bin from tftp to NAND flash
|
||
|
|
||
|
Notes:
|
||
|
- For the TFTP interface set serverip and ipaddr.
|
||
|
- To burn image to SD/eMMC device, the target is defined
|
||
|
by parameters CONFIG_SYS_MMC_ENV_DEV and CONFIG_SYS_MMC_ENV_PART.
|
||
|
|
||
|
Bubt command details (burn image step by-step)
|
||
|
----------------------------------------------
|
||
|
This section describes bubt command flow:
|
||
|
|
||
|
1. Fetch the requested ATF image from an available interface (USB/SD/SATA/XDB, etc.)
|
||
|
into the DRAM, and place it at <load_address>
|
||
|
Example: when using the FAT file system on USB flash device:
|
||
|
# usb reset
|
||
|
# fatls usb 0 (see files in device)
|
||
|
# fatload usb 0 <load_address> <file_name>
|
||
|
|
||
|
2. Erase the target device:
|
||
|
- NAND: # nand erase 0 100000
|
||
|
- SPI: # sf probe 0
|
||
|
# sf erase 0 100000
|
||
|
- SD/eMMC: # mmc dev <dev_id> <boot_partition>
|
||
|
|
||
|
Notes:
|
||
|
- The eMMC has 2 boot partitions (BOOT0 and BOOT1) and a user data partition (DATA).
|
||
|
The boot partitions are numbered as partition 1 and 2 in MMC driver.
|
||
|
Number 0 is used for user data partition and should not be utilized for storing
|
||
|
boot images and U-Boot environment in RAW mode since it will break file system
|
||
|
structures usually located here.
|
||
|
The default boot partition is BOOT0. It is selected by the following parameter:
|
||
|
CONFIG_SYS_MMC_ENV_PART=1
|
||
|
Valid values for this parameter are 1 for BOOT0 and 2 for BOOT1.
|
||
|
Please never use partition number 0 here!
|
||
|
The eMMC has 2 boot partitions (BOOT0 and BOOT1) and a user data partition (DATA).
|
||
|
The boot partitions are numbered as partition 1 and 2 in MMC driver.
|
||
|
Number 0 is used for user data partition and should not be utilized for storing
|
||
|
boot images and U-Boot environment in RAW mode since it will break file system
|
||
|
structures usually located here.
|
||
|
The default boot partition is BOOT0. It is selected by the following parameter:
|
||
|
CONFIG_SYS_MMC_ENV_PART=1
|
||
|
Valid values for this parameter are 1 for BOOT0 and 2 for BOOT1.
|
||
|
Please never use partition number 0 here!
|
||
|
- The partition number is ignored if the target device is SD card.
|
||
|
- The boot image offset starts at block 0 for eMMC and block 1 for SD devices.
|
||
|
The block 0 on SD devices is left for MBR storage.
|
||
|
|
||
|
3. Write the ATF image:
|
||
|
- NAND: # nand write <load_address> 0 <ATF Size>
|
||
|
- SPI: # sf write <load_address> 0 <ATF Size>
|
||
|
- SD/eMMC: # mmc write <load_address> [0|1] <ATF Size>/<block_size>
|
||
|
|