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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>
51 lines
1.5 KiB
ArmAsm
51 lines
1.5 KiB
ArmAsm
/*
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* arch/arm/mach-tegra/include/mach/debug-macro.S
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*
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* Copyright (C) 2010 Google, Inc.
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*
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* Author:
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* Colin Cross <ccross@google.com>
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* Erik Gilling <konkers@google.com>
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*
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* This software is licensed under the terms of the GNU General Public
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* License version 2, as published by the Free Software Foundation, and
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* may be copied, distributed, and modified under those terms.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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#include <mach/io.h>
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.macro addruart, rp, rv
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ldreq \rp, =IO_APB_PHYS @ physical
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ldrne \rv, =IO_APB_VIRT @ virtual
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#if defined(CONFIG_TEGRA_DEBUG_UART_NONE)
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#error "A debug UART must be selected in the kernel config to use DEBUG_LL"
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#elif defined(CONFIG_TEGRA_DEBUG_UARTA)
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orr \rp, \rp, #0x6000
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orr \rv, \rv, #0x6000
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#elif defined(CONFIG_TEGRA_DEBUG_UARTB)
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orr \rp, \rp, #0x6000
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orr \rp, \rp, #0x40
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orr \rv, \rv, #0x6000
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orr \rv, \rv, #0x40
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#elif defined(CONFIG_TEGRA_DEBUG_UARTC)
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orr \rp, \rp, #0x6200
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orr \rv, \rv, #0x6200
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#elif defined(CONFIG_TEGRA_DEBUG_UARTD)
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orr \rp, \rp, #0x6300
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orr \rv, \rv, #0x6300
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#elif defined(CONFIG_TEGRA_DEBUG_UARTE)
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orr \rp, \rp, #0x6400
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orr \rv, \rv, #0x6400
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#endif
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.endm
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#define UART_SHIFT 2
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#include <asm/hardware/debug-8250.S>
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