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Provide a man-page for the bootz command. Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
67 lines
1.6 KiB
ReStructuredText
67 lines
1.6 KiB
ReStructuredText
.. SPDX-License-Identifier: GPL-2.0+:
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bootz command
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=============
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Synopsis
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--------
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::
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bootz [<addr> [<initrd>[:<size>]] [<fdt>]]
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Description
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-----------
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The bootz command is used to boot a Linux kernel in 'zImage' format.
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addr
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address of kernel image, defaults to the value of the environment
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variable $loadaddr.
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initrd
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address of the initial RAM disk. Use '-' to boot a kernel with a device
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tree but without an initial RAM disk.
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size
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size of the initial RAM disk. This parameter must be specified for raw
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initial RAM disks.
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fdt
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address of the device tree.
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Example
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-------
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This is the boot log of an OrangePi PC board:
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::
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=> load mmc 0:2 $fdt_addr_r dtb
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23093 bytes read in 7 ms (3.1 MiB/s)
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=> load mmc 0:2 $kernel_addr_r vmlinuz
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5079552 bytes read in 215 ms (22.5 MiB/s)
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=> load mmc 0:2 $ramdisk_addr_r initrd.img
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23854965 bytes read in 995 ms (22.9 MiB/s)
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=> bootz $kernel_addr_r $ramdisk_addr_r:$filesize $fdt_addr_r
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Kernel image @ 0x42000000 [ 0x000000 - 0x4d8200 ]
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## Flattened Device Tree blob at 43000000
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Booting using the fdt blob at 0x43000000
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EHCI failed to shut down host controller.
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Loading Ramdisk to 48940000, end 49ffff75 ... OK
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Loading Device Tree to 48937000, end 4893fa34 ... OK
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Starting kernel ...
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Configuration
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-------------
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The bootz command is only available if CONFIG_CMD_BOOTZ=y.
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Return value
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------------
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Normally this command does not return. If an error occurs, the return value $?
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is set to 1 (false). If the operating system returns to U-Boot, the system is
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reset.
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