ARM: imx: add low-level debug for vybrid (c7c3eac6) · Commits · 戴 / test

arch/arm/Kconfig.debug

+8 −0

Original line number	Diff line number	Diff line
		@@ -386,6 +386,13 @@ choice
		when u-boot hands over to the kernel, the system
		silently crashes, with no serial output at all.

		config DEBUG_VF_UART
		bool "Vybrid UART"
		depends on SOC_VF610
		help
		Say Y here if you want kernel low-level debugging support
		on Vybrid based platforms.

		config DEBUG_NOMADIK_UART
		bool "Kernel low-level debugging messages via NOMADIK UART"
		depends on ARCH_NOMADIK
		@@ -906,6 +913,7 @@ config DEBUG_LL_INCLUDE
		default "debug/tegra.S" if DEBUG_TEGRA_UART
		default "debug/ux500.S" if DEBUG_UX500_UART
		default "debug/vexpress.S" if DEBUG_VEXPRESS_UART0_DETECT
		default "debug/vf.S" if DEBUG_VF_UART
		default "debug/vt8500.S" if DEBUG_VT8500_UART0
		default "debug/zynq.S" if DEBUG_ZYNQ_UART0 \|\| DEBUG_ZYNQ_UART1
		default "mach/debug-macro.S"

0 → 100644

+26 −0

Original line number	Diff line number	Diff line
		/*
		* Copyright 2013 Freescale Semiconductor, Inc.
		*
		* This program is free software; you can redistribute it and/or modify
		* it under the terms of the GNU General Public License version 2 as
		* published by the Free Software Foundation.
		*
		*/

		.macro addruart, rp, rv, tmp
		ldr \rp, =0x40028000 @ physical
		ldr \rv, =0xfe028000 @ virtual
		.endm

		.macro senduart, rd, rx
		strb \rd, [\rx, #0x7] @ Data Register
		.endm

		.macro busyuart, rd, rx
		1001: ldrb \rd, [\rx, #0x4] @ Status Register 1
		tst \rd, #1 << 6 @ TC
		beq 1001b @ wait until transmit done
		.endm

		.macro waituart,rd,rx
		.endm