From mboxrd@z Thu Jan 1 00:00:00 1970 From: Przemyslaw Marczak Date: Thu, 28 Aug 2014 11:59:13 +0200 Subject: [U-Boot] [PATCH v2 0/6] Introduce low-level debug for ARM architecture In-Reply-To: <1409193072-32562-1-git-send-email-yamada.m@jp.panasonic.com> References: <1409193072-32562-1-git-send-email-yamada.m@jp.panasonic.com> Message-ID: <53FEFD71.6070305@samsung.com> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de Hello Masahiro, On 08/28/2014 04:31 AM, Masahiro Yamada wrote: > > I have been in trouble for a while to debug some nasty problem > where neighter a debugger nor printf() function is available. > > I found the lowlevel debug feature in ARM Linux can be used as is > in U-Boot too. > > I tested this series on our SoCs (32bit ARM, specificly Coretex-A9). > Because I was not sure about aarch64, I have this feature > depend on "! ARM64". > > 1/6 and 2/6 refactor a bit and move CONFIG_ARM64 to Kconfig. > > 3/6 imports some source files from Linux 3.16 and > 5/6 adds the Kconfig menu. > > > > Masahiro Yamada (6): > vexpress64: kconfig: consolidate CONFIG_TARGET_VEXPRESS_AEMV8A_SEMI > kconfig: armv8: move CONFIG_ARM64 to Kconfig > arm: debug: import debug files from Linux 3.16 > arm: debug: replace license blocks with SPDX > arm: debug: add Kconfig entries for lowlevel debug > arm: debug: adjust for U-Boot > > arch/arm/Kconfig | 13 +- > arch/arm/Kconfig.debug | 64 ++++++ > arch/arm/cpu/armv8/Kconfig | 7 + > arch/arm/include/debug/8250.S | 52 +++++ > arch/arm/lib/Makefile | 2 + > arch/arm/lib/debug.S | 136 ++++++++++++ > board/armltd/vexpress64/Kconfig | 24 -- > board/freescale/ls2085a/Kconfig | 8 - > configs/ls2085a_emu_D4_defconfig | 2 +- > configs/ls2085a_emu_defconfig | 2 +- > configs/ls2085a_simu_defconfig | 2 +- > configs/vexpress_aemv8a_defconfig | 1 - > configs/vexpress_aemv8a_semi_defconfig | 4 +- > include/linux/serial_reg.h | 388 +++++++++++++++++++++++++++++++++ > 14 files changed, 664 insertions(+), 41 deletions(-) > create mode 100644 arch/arm/Kconfig.debug > create mode 100644 arch/arm/cpu/armv8/Kconfig > create mode 100644 arch/arm/include/debug/8250.S > create mode 100644 arch/arm/lib/debug.S > create mode 100644 include/linux/serial_reg.h > Tested on Trats2(Exynos4412) - works fine. Tested-by: Przemyslaw Marczak Best Regards, -- Przemyslaw Marczak Samsung R&D Institute Poland Samsung Electronics p.marczak at samsung.com