forked from Minki/linux
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
941 B
ArmAsm
37 lines
941 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/spear.h>
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.macro addruart, rp, rv
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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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