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OpenCloudOS-Kernel/arch/arm/mach-zynq/include/mach/debug-macro.S

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ARM: Xilinx: Adding Xilinx board support The 1st board support is minimal to get a system up and running on the Xilinx platform. This platform reuses the clock implementation from plat-versatile, and it depends entirely on CONFIG_OF support. There is only one board support file which obtains all device information from a device tree dtb file which is passed to the kernel at boot time. Signed-off-by: John Linn <john.linn@xilinx.com>
2011-06-21 01:47:27 +08:00
/* arch/arm/mach-zynq/include/mach/debug-macro.S
*
* Debugging macro include header
*
* Copyright (C) 2011 Xilinx
*
* This software is licensed under the terms of the GNU General Public
* License version 2, as published by the Free Software Foundation, and
* may be copied, distributed, and modified under those terms.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <mach/zynq_soc.h>
#include <mach/uart.h>
ARM: add an extra temp register to the low level debugging addruart macro Some platforms (like OMAP not to name it) are doing rather complicated hacks just to determine the base UART address to use. Let's give their addruart macro some slack by providing an extra work register which will allow for much needed cleanups. This is basically a no-op as this commit is only adding the extra argument to the macro but no one is using it yet. Signed-off-by: nicolas Pitre <nicolas.pitre@linaro.org> Reviewed-by: Kevin Hilman <khilman@ti.com>
2011-09-01 10:55:46 +08:00
.macro addruart, rp, rv, tmp
ARM: Xilinx: Adding Xilinx board support The 1st board support is minimal to get a system up and running on the Xilinx platform. This platform reuses the clock implementation from plat-versatile, and it depends entirely on CONFIG_OF support. There is only one board support file which obtains all device information from a device tree dtb file which is passed to the kernel at boot time. Signed-off-by: John Linn <john.linn@xilinx.com>
2011-06-21 01:47:27 +08:00
ldr \rp, =LL_UART_PADDR @ physical
ldr \rv, =LL_UART_VADDR @ virtual
.endm
.macro senduart,rd,rx
str \rd, [\rx, #UART_FIFO_OFFSET] @ TXDATA
.endm
.macro waituart,rd,rx
.endm
.macro busyuart,rd,rx
1002: ldr \rd, [\rx, #UART_SR_OFFSET] @ get status register
tst \rd, #UART_SR_TXFULL @
bne 1002b @ wait if FIFO is full
.endm