From ef3f94412a4d7e107392e7c7cfc3e2d0668aa1aa Mon Sep 17 00:00:00 2001 From: Pavel Machek Date: Wed, 17 Oct 2012 20:16:48 +0200 Subject: ARM: socfpga: Fix socfpga compilation with early_printk() enabled This fixes early_printk() compilation for socfpga. (senduart/busyuart/waituart were missing). It does that by making Picochip code generic. Signed-off-by: Pavel Machek Acked-by: Dinh Nguyen Acked-by: Jamie Iles Signed-off-by: Arnd Bergmann --- arch/arm/include/debug/8250_32.S | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) create mode 100644 arch/arm/include/debug/8250_32.S (limited to 'arch/arm/include/debug/8250_32.S') diff --git a/arch/arm/include/debug/8250_32.S b/arch/arm/include/debug/8250_32.S new file mode 100644 index 000000000000..8db01eeabbb4 --- /dev/null +++ b/arch/arm/include/debug/8250_32.S @@ -0,0 +1,27 @@ +/* + * Copyright (c) 2011 Picochip Ltd., Jamie Iles + * + * 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. + * + * Derived from arch/arm/mach-davinci/include/mach/debug-macro.S to use 32-bit + * accesses to the 8250. + */ + +#include + + .macro senduart,rd,rx + str \rd, [\rx, #UART_TX << UART_SHIFT] + .endm + + .macro busyuart,rd,rx +1002: ldr \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 + + /* The UART's don't have any flow control IO's wired up. */ + .macro waituart,rd,rx + .endm -- cgit v1.2.3