[PATCH 9/9] ARM: vexpress: Config option for early printk console
From: Jonathan Austin <hidden>
Date: 2012-07-11 14:23:11
Hi Pawel, On 11/07/12 14:36, Pawel Moll wrote:
quoted hunk ↗ jump to hunk
diff --git a/arch/arm/Kconfig.debug b/arch/arm/Kconfig.debug index 01a1341..12eee87 100644 --- a/arch/arm/Kconfig.debug +++ b/arch/arm/Kconfig.debug@@ -310,6 +310,32 @@ choice The uncompressor code port configuration is now handled by CONFIG_S3C_LOWLEVEL_UART_PORT. + config DEBUG_VEXPRESS_UART0_DETECT + bool "Autodetect UART0 on Versatile Express Cortex-A core tiles" + depends on ARCH_VEXPRESS + help + This option enables simple heuristic which tries to determine + motherboard's memory map variant (original or RS1) and then + choose relevant UART0 base address. + + Note that this will only work with standard A-class core tiles, + and may fail with non-standard SMM or custom software model. +
Is it possible to make this depend on something like CPU_CP15_MMU, instead of ARCH_VEXPRESS? Seems like a reasonable way to ensure that this isn't used on some of the core tiles that don't have the required cp15 registers to read the Configuration Base Address Register. Jonny