From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from mail-la0-x22c.google.com ([2a00:1450:4010:c03::22c]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1WnYzg-0004u4-2h for barebox@lists.infradead.org; Thu, 22 May 2014 19:49:36 +0000 Received: by mail-la0-f44.google.com with SMTP id hr17so3096944lab.3 for ; Thu, 22 May 2014 12:49:13 -0700 (PDT) From: Antony Pavlov Date: Thu, 22 May 2014 23:48:45 +0400 Message-Id: <1400788130-24202-3-git-send-email-antonynpavlov@gmail.com> In-Reply-To: <1400788130-24202-1-git-send-email-antonynpavlov@gmail.com> References: <1400788130-24202-1-git-send-email-antonynpavlov@gmail.com> List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "barebox" Errors-To: barebox-bounces+u.kleine-koenig=pengutronix.de@lists.infradead.org Subject: [PATCH v2 2/7] ARM: uemd: add DEBUG_LL support To: barebox@lists.infradead.org Signed-off-by: Antony Pavlov --- arch/arm/Kconfig | 1 + arch/arm/mach-uemd/include/mach/debug_ll.h | 42 ++++++++++++++++++++++++++++++ 2 files changed, 43 insertions(+) diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index 81ee19b..c236a9e 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -203,6 +203,7 @@ config ARCH_UEMD select OFDEVICE select OFTREE select CLOCKSOURCE_UEMD + select HAS_DEBUG_LL config ARCH_ZYNQ bool "Xilinx Zynq-based boards" diff --git a/arch/arm/mach-uemd/include/mach/debug_ll.h b/arch/arm/mach-uemd/include/mach/debug_ll.h new file mode 100644 index 0000000..ce18244 --- /dev/null +++ b/arch/arm/mach-uemd/include/mach/debug_ll.h @@ -0,0 +1,42 @@ +/* + * Copyright (C) 2014 Antony Pavlov + * + * This file is part of barebox. + * See file CREDITS for list of people who contributed to this project. + * + * 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. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + */ + +/** @file + * This File contains declaration for early output support + */ +#ifndef __INCLUDE_ARCH_DEBUG_LL_H__ +#define __INCLUDE_ARCH_DEBUG_LL_H__ + +#include +#include + +#define DEBUG_LL_UART_ADDR UEMD_UART0_BASE +#define DEBUG_LL_UART_RSHFT 2 + +#define rbr (0 << DEBUG_LL_UART_RSHFT) +#define lsr (5 << DEBUG_LL_UART_RSHFT) +#define LSR_THRE 0x20 /* Xmit holding register empty */ + +static inline void PUTC_LL(char ch) +{ + while (!(__raw_readb(DEBUG_LL_UART_ADDR + lsr) & LSR_THRE)) + ; + + __raw_writeb(ch, DEBUG_LL_UART_ADDR + rbr); +} + +#endif /* __INCLUDE_ARCH_DEBUG_LL_H__ */ -- 1.9.2 _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox