0fbc559215
Add support for the DA850/OMAP-L138 Evaluation Module (EVM) from TI. The EVM has User Interface (UI) card which contains various devices. This UI card can be connected to the base board. Support for all the devices on the UI card and ones on the EVM will be added in subsequent patches. The EVM schematics are not available publicly yet; but should be available soon. A new defconfig for this board has been added mainly because the DA830/OMAP-L137 defconfig forces writethrough cache mode which is not required on DA850/OMAP-L138. This patch has been boot tested on DA850/OMAP-L138 EVM using ramdisk as filesystem. Signed-off-by: Sudhakar Rajashekhara <sudhakar.raj@ti.com> Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
56 lines
1.5 KiB
ArmAsm
56 lines
1.5 KiB
ArmAsm
/*
|
|
* Debugging macro for DaVinci
|
|
*
|
|
* Author: Kevin Hilman, MontaVista Software, Inc. <source@mvista.com>
|
|
*
|
|
* 2007 (c) MontaVista Software, Inc. This file is licensed under
|
|
* the terms of the GNU General Public License version 2. This program
|
|
* is licensed "as is" without any warranty of any kind, whether express
|
|
* or implied.
|
|
*/
|
|
|
|
/* Modifications
|
|
* Jan 2009 Chaithrika U S Added senduart, busyuart, waituart
|
|
* macros, based on debug-8250.S file
|
|
* but using 32-bit accesses required for
|
|
* some davinci devices.
|
|
*/
|
|
|
|
#include <linux/serial_reg.h>
|
|
#define UART_SHIFT 2
|
|
|
|
.macro addruart, rx
|
|
mrc p15, 0, \rx, c1, c0
|
|
tst \rx, #1 @ MMU enabled?
|
|
moveq \rx, #0x01000000 @ physical base address
|
|
movne \rx, #0xfe000000 @ virtual base
|
|
#if defined(CONFIG_ARCH_DAVINCI_DA8XX) && defined(CONFIG_ARCH_DAVINCI_DMx)
|
|
#error Cannot enable DaVinci and DA8XX platforms concurrently
|
|
#elif defined(CONFIG_MACH_DAVINCI_DA830_EVM) || \
|
|
defined(CONFIG_MACH_DAVINCI_DA850_EVM)
|
|
orr \rx, \rx, #0x00d00000 @ physical base address
|
|
orr \rx, \rx, #0x0000d000 @ of UART 2
|
|
#else
|
|
orr \rx, \rx, #0x00c20000 @ UART 0
|
|
#endif
|
|
.endm
|
|
|
|
.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
|
|
|
|
.macro waituart,rd,rx
|
|
#ifdef FLOW_CONTROL
|
|
1001: ldr \rd, [\rx, #UART_MSR << UART_SHIFT]
|
|
tst \rd, #UART_MSR_CTS
|
|
beq 1001b
|
|
#endif
|
|
.endm
|
|
|