u-boot/doc/README.vxworks

1 # SPDX-License-Identifier: GPL-2.0+
4 # Copyright (C) 2015-2018, Bin Meng <bmeng.cn@gmail.com>
9 This document describes the information about U-Boot loading VxWorks kernel.
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13 U-Boot supports loading VxWorks kernels via 'bootvx' and 'bootm' commands.
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39     bootm <kernel image address> - <device tree address>
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43 When using 'bootvx', the kernel bootline must be prepared by U-Boot at a
44 board-specific address before loading VxWorks. U-Boot supplies its address
56 When using 'bootm', just define "bootargs" in the environment and U-Boot will
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65 serial console from what is being used by U-Boot. For example, VxWorks tends
66 to use 9600 as the default baud rate on all x86 BSPs while U-Boot uses 115200.
67 Please configure both U-Boot and VxWorks to use the same baud rate, or it may
70 x86-specific information
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77 VxWorks 7, this is normally a virtual address and you need find out its
80 For boards on which ACPI is not supported by U-Boot yet, VxWorks kernel must
81 be configured to use MP table and virtual wire interrupt mode. This requires
85 Both 32-bit x86 and 64-bit x64 kernels can be loaded.
88 VGA text mode driver. The other one is the EFI console bitmapped graphics mode
89 driver. To make these drivers function, U-Boot needs to load and run the VGA
92     - If the kernel is configured with 80x25 VGA text mode driver,
93       CONFIG_FRAMEBUFFER_SET_VESA_MODE must be unset in U-Boot.
94     - If the kernel is configured with bitmapped graphics mode driver,
96       at which VESA mode is to be set. The supported pixel format is 32-bit
97       RGBA, hence the available VESA mode can only be one of the following: