CONFIG_EARLY_PRINTK_DBGP: Early printk via EHCI debug port

General informations

The Linux kernel configuration item CONFIG_EARLY_PRINTK_DBGP:

• prompt: Early printk via EHCI debug port
• type: bool
• depends on: CONFIG_EARLY_PRINTK && CONFIG_PCI
• defined in arch/x86/Kconfig.debug
• found in Linux kernels: 2.6.28–2.6.39, 3.0–3.19, 4.0–4.20, 5.0–5.19, 6.0–6.12

Help text

Write kernel log output directly into the EHCI debug port.

This is useful for kernel debugging when your machine crashes very early before the console code is initialized. For normal operation it is not recommended because it looks ugly and doesn't cooperate with klogd/syslogd or the X server. You should normally say N here, unless you want to debug such a crash. You need usb debug device.

Hardware

LKDDb

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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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