| Maxim Moskalets | 52a8e41 | 2024-06-30 17:19:52 +0300 | [diff] [blame] | 1 | .. SPDX-License-Identifier: GPL-2.0-or-later |
| 2 | .. Copyright 2024, Maxim Moskalets <maximmosk4@gmail.com> |
| 3 | |
| 4 | .. index:: |
| 5 | single: bootelf (command) |
| 6 | |
| 7 | bootelf command |
| 8 | =============== |
| 9 | |
| 10 | Synopsis |
| 11 | -------- |
| 12 | |
| 13 | :: |
| 14 | |
| 15 | bootelf [-p|-s] [-d <fdt_addr>] [<image_addr> [<arg>]...] |
| 16 | |
| 17 | Description |
| 18 | ----------- |
| 19 | |
| 20 | The *bootelf* command is used to launch a ELF binary at *image_addr*. If |
| 21 | *image_addr* is not specified, the bootelf command will try to find image in |
| 22 | *image_load_addr* variable (*CONFIG\_SYS\_LOAD\_ADDR* by default). |
| 23 | |
| 24 | Args after *image_addr* will be passed to application in common *argc*, *argv* |
| 25 | format. |
| 26 | |
| 27 | A command sequence to run a ELF image using FDT might look like |
| 28 | |
| 29 | :: |
| 30 | |
| 31 | load mmc 0:1 ${loadaddr} /kernel.elf |
| 32 | load mmc 0:1 ${fdt_addr_r} /soc-board.dtb |
| 33 | bootelf -d ${fdt_addr_r} ${loadaddr} ${loadaddr} |
| 34 | |
| 35 | image_addr |
| 36 | Address of the ELF binary. |
| 37 | |
| 38 | fdt_addr |
| 39 | Address of the device-tree. This argument in only needed if bootable |
| 40 | application uses FDT that requires additional setup (like /memory node). |
| 41 | |
| 42 | arg |
| 43 | Any text arguments for bootable application. This is usually the address |
| 44 | of the device-tree. |
| 45 | |
| 46 | Flags: |
| 47 | |
| 48 | -p |
| 49 | Load ELF image via program headers. |
| 50 | |
| 51 | -s |
| 52 | Load ELF image via section headers. |
| 53 | |
| 54 | -d |
| 55 | Setup FDT by address. |
| 56 | |
| 57 | Configuration |
| 58 | ------------- |
| 59 | |
| 60 | The bootelf command is only available if CONFIG_CMD_ELF=y. FDT setup by flag -d |
| 61 | need CONFIG_CMD_ELF_FDT_SETUP=y. |