From 4d31e66412955b20081d6966c271a71d4abcefd7 Mon Sep 17 00:00:00 2001 From: Daniel Thompson Date: Fri, 9 Jan 2015 18:34:03 +0100 Subject: 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 Acked-by: Arnd Bergmann Cc: linux-arm-kernel@lists.infradead.org Signed-off-by: Russell King --- arch/arm/include/debug/netx.S | 36 ++++++++++++++++++++++++++++++++++++ 1 file changed, 36 insertions(+) create mode 100644 arch/arm/include/debug/netx.S (limited to 'arch/arm/include') diff --git a/arch/arm/include/debug/netx.S b/arch/arm/include/debug/netx.S new file mode 100644 index 0000000..81e1b2a --- /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 -- cgit v1.1