639da5ee37
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>
36 lines
949 B
ArmAsm
36 lines
949 B
ArmAsm
/*
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* arch/arm/plat-spear/include/plat/debug-macro.S
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*
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* Debugging macro include header for spear platform
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*
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* Copyright (C) 2009 ST Microelectronics
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* Viresh Kumar<viresh.kumar@st.com>
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*
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* This file is licensed under the terms of the GNU General Public
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* License version 2. This program is licensed "as is" without any
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* warranty of any kind, whether express or implied.
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*/
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#include <linux/amba/serial.h>
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#include <mach/hardware.h>
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.macro addruart, rp, rv, tmp
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mov \rp, #SPEAR_DBG_UART_BASE @ Physical base
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mov \rv, #VA_SPEAR_DBG_UART_BASE @ Virtual base
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.endm
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.macro senduart, rd, rx
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strb \rd, [\rx, #UART01x_DR] @ ASC_TX_BUFFER
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.endm
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.macro waituart, rd, rx
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1001: ldr \rd, [\rx, #UART01x_FR] @ FLAG REGISTER
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tst \rd, #UART01x_FR_TXFF @ TX_FULL
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bne 1001b
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.endm
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.macro busyuart, rd, rx
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1002: ldr \rd, [\rx, #UART01x_FR] @ FLAG REGISTER
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tst \rd, #UART011_FR_TXFE @ TX_EMPTY
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beq 1002b
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.endm
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