From f73765fcb8bb79e80af58059441eb931679e68c0 Mon Sep 17 00:00:00 2001 From: Will Deacon Date: Mon, 3 Oct 2011 18:29:03 +0100 Subject: [PATCH] ARM: 7116/1: debug: provide dummy default option for DEBUG_LL UART choice Defaulting to DEBUG_ICEDCC will cause systems to hang during boot unless a hardware debugger is listening to the debug comms. channel. This patch adds a dummy UART option as the default DEBUG_LL choice which requires the platform to do the right thing. Acked-by: Stephen Boyd Tested-by: Marc Zyngier Signed-off-by: Will Deacon Signed-off-by: Russell King --- arch/arm/Kconfig.debug | 12 ++++++++++-- 1 file changed, 10 insertions(+), 2 deletions(-) diff --git a/arch/arm/Kconfig.debug b/arch/arm/Kconfig.debug index 91a826308d56..b3dc1fa30848 100644 --- a/arch/arm/Kconfig.debug +++ b/arch/arm/Kconfig.debug @@ -81,6 +81,14 @@ choice prompt "Kernel low-level debugging port" depends on DEBUG_LL + config DEBUG_LL_UART_NONE + bool "No low-level debugging UART" + help + Say Y here if your platform doesn't provide a UART option + below. This relies on your platform choosing the right UART + definition internally in order for low-level debugging to + work. + config DEBUG_ICEDCC bool "Kernel low-level debugging via EmbeddedICE DCC channel" help @@ -89,8 +97,8 @@ choice co-processor 14. This is known to work on the ARM9 style ICE channel and on the XScale with the PEEDI. - It does include a timeout to ensure that the system does not - totally freeze when there is nothing connected to read. + Note that the system will appear to hang during boot if there + is nothing connected to read from the DCC. config DEBUG_FOOTBRIDGE_COM1 bool "Kernel low-level debugging messages via footbridge 8250 at PCI COM1" -- 2.39.5