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author | Antony Pavlov <antonynpavlov@gmail.com> | 2012-05-12 11:15:03 +0400 |
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committer | Sascha Hauer <s.hauer@pengutronix.de> | 2012-05-13 11:02:33 +0200 |
commit | 40492a0c1305835c996e15eb1cce2406473ae76d (patch) | |
tree | e172968ecb8bd54041b70fc4f238ff093b70213b /arch/mips | |
parent | f49387add0c59737e3d0d8d48ab1fcfe6f23e00a (diff) | |
download | barebox-40492a0c1305835c996e15eb1cce2406473ae76d.tar.gz barebox-40492a0c1305835c996e15eb1cce2406473ae76d.tar.xz |
MIPS: add common header file for DEBUG_LL via NS16550
Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'arch/mips')
-rw-r--r-- | arch/mips/include/debug_ll_ns16550.h | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/arch/mips/include/debug_ll_ns16550.h b/arch/mips/include/debug_ll_ns16550.h new file mode 100644 index 0000000000..9280219449 --- /dev/null +++ b/arch/mips/include/debug_ll_ns16550.h @@ -0,0 +1,40 @@ +/* + * Copyright (C) 2012 Antony Pavlov <antonynpavlov@gmail.com> + * + * 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. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +/** @file + * This file contains declaration for early output support + */ +#ifndef __INCLUDE_ARCH_DEBUG_LL_NS16550_H__ +#define __INCLUDE_ARCH_DEBUG_LL_NS16550_H__ + +#include <asm/io.h> + +#define rbr (0 << DEBUG_LL_UART_SHIFT) +#define lsr (5 << DEBUG_LL_UART_SHIFT) + +#define LSR_THRE 0x20 /* Xmit holding register empty */ + +static __inline__ void putc(char ch) +{ + while (!(__raw_readb((u8 *)DEBUG_LL_UART_ADDR + lsr) & LSR_THRE)); + __raw_writeb(ch, (u8 *)DEBUG_LL_UART_ADDR + rbr); +} + +#endif /* __INCLUDE_ARCH_DEBUG_LL_NS16550_H__ */ |