From 1cfe9fa012da6c70402b5c2787414fd47fafb65f Mon Sep 17 00:00:00 2001 From: Masahiro Yamada Date: Mon, 1 Sep 2014 11:06:32 +0900 Subject: arm: debug: import debug files from Linux 3.16 U-Boot does not have arch/arm/kernel, include/uapi directories, This commit copies files as follows: Location in Linux -> Location in U-Boot arch/arm/kernel/debug.S -> arch/arm/lib/debug.S arch/arm/include/debug/8250.S -> arch/arm/include/debug/8250.S include/uapi/linux/serial_reg.h -> include/linux/serial_reg.h Signed-off-by: Masahiro Yamada --- arch/arm/include/debug/8250.S | 54 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 54 insertions(+) create mode 100644 arch/arm/include/debug/8250.S (limited to 'arch/arm/include/debug/8250.S') diff --git a/arch/arm/include/debug/8250.S b/arch/arm/include/debug/8250.S new file mode 100644 index 0000000..7a2baf9 --- /dev/null +++ b/arch/arm/include/debug/8250.S @@ -0,0 +1,54 @@ +/* + * arch/arm/include/debug/8250.S + * + * Copyright (C) 1994-2013 Russell King + * + * 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. + */ +#include + + .macro addruart, rp, rv, tmp + ldr \rp, =CONFIG_DEBUG_UART_PHYS + ldr \rv, =CONFIG_DEBUG_UART_VIRT + .endm + +#ifdef CONFIG_DEBUG_UART_8250_WORD + .macro store, rd, rx:vararg + str \rd, \rx + .endm + + .macro load, rd, rx:vararg + ldr \rd, \rx + .endm +#else + .macro store, rd, rx:vararg + strb \rd, \rx + .endm + + .macro load, rd, rx:vararg + ldrb \rd, \rx + .endm +#endif + +#define UART_SHIFT CONFIG_DEBUG_UART_8250_SHIFT + + .macro senduart,rd,rx + store \rd, [\rx, #UART_TX << UART_SHIFT] + .endm + + .macro busyuart,rd,rx +1002: load \rd, [\rx, #UART_LSR << UART_SHIFT] + and \rd, \rd, #UART_LSR_TEMT | UART_LSR_THRE + teq \rd, #UART_LSR_TEMT | UART_LSR_THRE + bne 1002b + .endm + + .macro waituart,rd,rx +#ifdef CONFIG_DEBUG_UART_8250_FLOW_CONTROL +1001: load \rd, [\rx, #UART_MSR << UART_SHIFT] + tst \rd, #UART_MSR_CTS + beq 1001b +#endif + .endm -- cgit v1.1