diff options
| author | Daniel Thompson <daniel.thompson@linaro.org> | 2015-01-09 20:34:03 +0300 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2015-01-21 18:49:40 +0300 |
| commit | 4d31e66412955b20081d6966c271a71d4abcefd7 (patch) | |
| tree | f8cf99b71d85fe9e21a5ab1452996d9e908ef078 /arch/arm/include/debug | |
| parent | c26b999353339c235b9e166739926d0199eeecbf (diff) | |
| download | linux-4d31e66412955b20081d6966c271a71d4abcefd7.tar.xz | |
ARM: 8272/1: netx: Migrate DEBUG_LL macros to shared directory
As part of the migration we introduce DEBUG_UART_PHYS/DEBUG_UART_VIRT
which default to UART1 but allow a user to configure UART2 or UART3.
We also introduce symbolic names for the registers and flags.
Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org>
Acked-by: Arnd Bergmann <arnd.bergmann@linaro.org>
Cc: linux-arm-kernel@lists.infradead.org
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/include/debug')
| -rw-r--r-- | arch/arm/include/debug/netx.S | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/arch/arm/include/debug/netx.S b/arch/arm/include/debug/netx.S new file mode 100644 index 000000000000..81e1b2af70f7 --- /dev/null +++ b/arch/arm/include/debug/netx.S @@ -0,0 +1,36 @@ +/* + * Debugging macro include header + * + * Copyright (C) 1994-1999 Russell King + * Moved from linux/arch/arm/kernel/debug.S by Ben Dooks + * + * 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. + * +*/ + +#define UART_DATA 0 +#define UART_FLAG 0x18 +#define UART_FLAG_BUSY (1 << 3) + + .macro addruart, rp, rv, tmp + ldr \rp, =CONFIG_DEBUG_UART_PHYS + ldr \rv, =CONFIG_DEBUG_UART_VIRT + .endm + + .macro senduart,rd,rx + str \rd, [\rx, #UART_DATA] + .endm + + .macro busyuart,rd,rx +1002: ldr \rd, [\rx, #UART_FLAG] + tst \rd, #UART_FLAG_BUSY + bne 1002b + .endm + + .macro waituart,rd,rx +1001: ldr \rd, [\rx, #UART_FLAG] + tst \rd, #UART_FLAG_BUSY + bne 1001b + .endm |