0ea1293009
Rather than checking the MMU status in every instance of addruart, do it once in kernel/debug.S, and change the existing addruart macros to return both physical and virtual addresses. The main debug code can then select the appropriate address to use. This will also allow us to retreive the address of a uart for the MMU state that we're not current in. Updated with fixes for OMAP from Jason Wang <jason77.wang@gmail.com> and Tony Lindgren <tony@atomide.com>, and fix for versatile express from Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>. Signed-off-by: Jeremy Kerr <jeremy.kerr@canonical.com> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Signed-off-by: Jason Wang <jason77.wang@gmail.com> Signed-off-by: Tony Lindgren <tony@atomide.com> Tested-by: Kevin Hilman <khilman@deeprootsystems.com>
37 lines
992 B
ArmAsm
37 lines
992 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
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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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