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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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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>
37 lines
997 B
ArmAsm
37 lines
997 B
ArmAsm
/*
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* arch/arm/mach-ks8695/include/mach/debug-macro.S
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*
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* Copyright (C) 2006 Ben Dooks <ben@simtec.co.uk>
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* Copyright (C) 2006 Simtec Electronics
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*
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* KS8695 - Debug macros
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <mach/hardware.h>
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#include <mach/regs-uart.h>
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.macro addruart, rp, rv, tmp
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ldr \rp, =KS8695_UART_PA @ physical base address
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ldr \rv, =KS8695_UART_VA @ virtual base address
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.endm
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.macro senduart, rd, rx
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str \rd, [\rx, #KS8695_URTH] @ Write to Transmit Holding Register
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.endm
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.macro busyuart, rd, rx
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1001: ldr \rd, [\rx, #KS8695_URLS] @ Read Line Status Register
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tst \rd, #URLS_URTE @ Holding & Shift registers empty?
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beq 1001b
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.endm
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.macro waituart, rd, rx
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1001: ldr \rd, [\rx, #KS8695_URLS] @ Read Line Status Register
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tst \rd, #URLS_URTHRE @ Holding Register empty?
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beq 1001b
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.endm
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