load command

Synopsis

load <addr> <path> [bytes [pos]]
load <interface> [<dev[:part]> [<addr> [<filename> [bytes [pos]]]]]

Description

The load command reads a file from a filesystem into memory.

The number of transferred bytes is saved in the environment variable filesize. The load address is saved in the environment variable fileaddr.

VFS form

When the VFS is enabled, the first form is used. The filesystem must be mounted first using mount.

addr

load address (hexadecimal)

path

absolute or relative path to the file in the VFS

bytes

maximum number of bytes to load (hexadecimal, default: whole file)

pos

byte offset to start reading from (hexadecimal, default: 0)

Legacy form

The second form is used when CONFIG_CMD_FS_GENERIC=y and accesses a block device directly without mounting.

interface

interface for accessing the block device (mmc, sata, scsi, usb, ….)

dev

device number

part

partition number, defaults to 0 (whole device)

addr

load address, defaults to environment variable loadaddr or if loadaddr is not set to configuration variable CONFIG_SYS_LOAD_ADDR

filename

path to file, defaults to environment variable bootfile

bytes

maximum number of bytes to load

pos

number of bytes to skip

part, addr, bytes, pos are hexadecimal numbers.

Example

VFS:

=> mount host 0:0 /mnt
=> load ${loadaddr} /mnt/Image
12345678 bytes read
=> load ${loadaddr} /mnt/Image 1000
4096 bytes read

Legacy:

=> load mmc 0:1 ${kernel_addr_r} snp.efi
149280 bytes read in 11 ms (12.9 MiB/s)
=> load mmc 0:1 ${kernel_addr_r} snp.efi 1000000 100
149024 bytes read in 10 ms (14.2 MiB/s)

Configuration

The VFS form is available when CONFIG_CMD_VFS=y. The legacy form is available when CONFIG_CMD_FS_GENERIC=y.

Return value

The return value $? is set to 0 (true) if the file was successfully loaded even if the number of bytes is less then the specified length.

If an error occurs, the return value $? is set to 1 (false).