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| author | Tom Rini <trini@ti.com> | 2014-11-07 20:35:20 -0500 |
|---|---|---|
| committer | Tom Rini <trini@ti.com> | 2014-11-10 16:25:28 -0500 |
| commit | 2db8c2d61a05bb4a94bb341329c6de811757c111 (patch) | |
| tree | f173c3f8c58de371d3e002cd36ca263fac03542d /arch/arm/include/debug | |
| parent | e72be8947e129f5ab274c0a9f235d2cc0014b2ea (diff) | |
| parent | 59a9cfdd16ad7ab14f22697bf1e049c6bea0d3e2 (diff) | |
| download | blackbird-obmc-uboot-2db8c2d61a05bb4a94bb341329c6de811757c111.tar.gz blackbird-obmc-uboot-2db8c2d61a05bb4a94bb341329c6de811757c111.zip | |
Merge branch 'master' of git://git.denx.de/u-boot-arm
Diffstat (limited to 'arch/arm/include/debug')
| -rw-r--r-- | arch/arm/include/debug/8250.S | 52 |
1 files changed, 52 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..d47a892652 --- /dev/null +++ b/arch/arm/include/debug/8250.S @@ -0,0 +1,52 @@ +/* + * arch/arm/include/debug/8250.S + * + * Copyright (C) 1994-2013 Russell King + * + * SPDX-License-Identifier: GPL-2.0+ + */ +#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 |
