CONFIG_ARM_ATAG_DTB_COMPAT: Supplement the appended DTB with traditional ATAG information

General informations

The Linux kernel configuration item CONFIG_ARM_ATAG_DTB_COMPAT:

• prompt: Supplement the appended DTB with traditional ATAG information
• type: bool
• depends on: CONFIG_ARM_APPENDED_DTB
• defined in arch/arm/Kconfig
• found in Linux kernels: 3.2–3.19, 4.0–4.20, 5.0–5.19, 6.0–6.8, 6.9-rc+HEAD

Help text

Some old bootloaders can't be updated to a DTB capable one, yet they provide ATAGs with memory configuration, the ramdisk address, the kernel cmdline string, etc. Such information is dynamically provided by the bootloader and can't always be stored in a static DTB. To allow a device tree enabled kernel to be used with such bootloaders, this option allows zImage to extract the information from the ATAG list and store it at run time into the appended DTB.

Hardware

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Sources

This page is automaticly generated with free (libre, open) software lkddb(see lkddb-sources).

The data is retrived from:

• Linux kernel
• Linux Kernel Driver DataBase (LKDDb)

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