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| author | Masahiro Yamada <yamada.m@jp.panasonic.com> | 2014-09-01 11:06:32 +0900 |
|---|---|---|
| committer | Albert ARIBAUD <albert.u.boot@aribaud.net> | 2014-10-26 22:21:59 +0100 |
| commit | 1cfe9fa012da6c70402b5c2787414fd47fafb65f (patch) | |
| tree | 4a741337ef555ab59bb97016a74cfd3c432aff49 /arch/arm/include/debug/8250.S | |
| parent | 5b3ee386fde82a1ba42ff09b95247842c9a1585e (diff) | |
| download | blackbird-obmc-uboot-1cfe9fa012da6c70402b5c2787414fd47fafb65f.tar.gz blackbird-obmc-uboot-1cfe9fa012da6c70402b5c2787414fd47fafb65f.zip | |
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 <yamada.m@jp.panasonic.com>
Diffstat (limited to 'arch/arm/include/debug/8250.S')
| -rw-r--r-- | arch/arm/include/debug/8250.S | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/arch/arm/include/debug/8250.S b/arch/arm/include/debug/8250.S new file mode 100644 index 0000000000..7a2baf913a --- /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 <linux/serial_reg.h> + + .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 |
