8593790d60
Add support for the DA830/OMAP-L137 Evaluation Module (EVM) from TI. The EVM has User Interface (UI) and Audio cards that can be connected which contain various devices. Support for those devices and ones on the EVM will be added in subsequent patches. Additional generalizations for future SoCs in da8xx family done by Sudhakar Rajashekhara and Sekhar Nori. Signed-off-by: Steve Chen <schen@mvista.com> Signed-off-by: Mark A. Greer <mgreer@mvista.com> Cc: Sudhakar Rajashekhara <sudhakar.raj@ti.com> Cc: Sekhar Nori <nsekhar@ti.com> Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
55 lines
1.5 KiB
ArmAsm
55 lines
1.5 KiB
ArmAsm
/*
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* Debugging macro for DaVinci
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*
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* Author: Kevin Hilman, MontaVista Software, Inc. <source@mvista.com>
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*
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* 2007 (c) MontaVista Software, Inc. This file is licensed under
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* the terms of the GNU General Public License version 2. This program
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* is licensed "as is" without any warranty of any kind, whether express
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* or implied.
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*/
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/* Modifications
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* Jan 2009 Chaithrika U S Added senduart, busyuart, waituart
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* macros, based on debug-8250.S file
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* but using 32-bit accesses required for
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* some davinci devices.
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*/
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#include <linux/serial_reg.h>
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#define UART_SHIFT 2
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.macro addruart, rx
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mrc p15, 0, \rx, c1, c0
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tst \rx, #1 @ MMU enabled?
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moveq \rx, #0x01000000 @ physical base address
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movne \rx, #0xfe000000 @ virtual base
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#if defined(CONFIG_ARCH_DAVINCI_DA8XX) && defined(CONFIG_ARCH_DAVINCI_DMx)
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#error Cannot enable DaVinci and DA8XX platforms concurrently
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#elif defined(CONFIG_MACH_DAVINCI_DA8XX_EVM)
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orr \rx, \rx, #0x00d00000 @ physical base address
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orr \rx, \rx, #0x0000d000 @ of UART 2
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#else
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orr \rx, \rx, #0x00c20000 @ UART 0
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#endif
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.endm
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.macro senduart,rd,rx
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str \rd, [\rx, #UART_TX << UART_SHIFT]
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.endm
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.macro busyuart,rd,rx
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1002: ldr \rd, [\rx, #UART_LSR << UART_SHIFT]
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and \rd, \rd, #UART_LSR_TEMT | UART_LSR_THRE
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teq \rd, #UART_LSR_TEMT | UART_LSR_THRE
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bne 1002b
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.endm
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.macro waituart,rd,rx
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#ifdef FLOW_CONTROL
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1001: ldr \rd, [\rx, #UART_MSR << UART_SHIFT]
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tst \rd, #UART_MSR_CTS
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beq 1001b
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#endif
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.endm
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