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852663d94f
Base the UART detection heuristic on architecturally defined MIDR register instead of implementation dependent CBAR. The only tile using the original memory map is V2P-CA9 with Cortex A9 r0p1, which MIDR contains value 0x410fc091. Signed-off-by: Pawel Moll <pawel.moll@arm.com>
87 lines
2.0 KiB
ArmAsm
87 lines
2.0 KiB
ArmAsm
/* arch/arm/mach-realview/include/mach/debug-macro.S
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*
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* Debugging macro include header
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*
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* Copyright (C) 1994-1999 Russell King
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* Moved from linux/arch/arm/kernel/debug.S by Ben Dooks
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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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#define DEBUG_LL_PHYS_BASE 0x10000000
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#define DEBUG_LL_UART_OFFSET 0x00009000
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#define DEBUG_LL_PHYS_BASE_RS1 0x1c000000
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#define DEBUG_LL_UART_OFFSET_RS1 0x00090000
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#define DEBUG_LL_VIRT_BASE 0xf8000000
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#if defined(CONFIG_DEBUG_VEXPRESS_UART0_DETECT)
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.macro addruart,rp,rv,tmp
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@ Make an educated guess regarding the memory map:
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@ - the original A9 core tile (based on ARM Cortex-A9 r0p1)
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@ should use UART at 0x10009000
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@ - all other (RS1 complaint) tiles use UART mapped
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@ at 0x1c090000
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mrc p15, 0, \rp, c0, c0, 0
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movw \rv, #0xc091
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movt \rv, #0x410f
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cmp \rp, \rv
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@ Original memory map
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moveq \rp, #DEBUG_LL_UART_OFFSET
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orreq \rv, \rp, #DEBUG_LL_VIRT_BASE
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orreq \rp, \rp, #DEBUG_LL_PHYS_BASE
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@ RS1 memory map
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movne \rp, #DEBUG_LL_UART_OFFSET_RS1
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orrne \rv, \rp, #DEBUG_LL_VIRT_BASE
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orrne \rp, \rp, #DEBUG_LL_PHYS_BASE_RS1
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.endm
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#include <asm/hardware/debug-pl01x.S>
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#elif defined(CONFIG_DEBUG_VEXPRESS_UART0_CA9)
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.macro addruart,rp,rv,tmp
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mov \rp, #DEBUG_LL_UART_OFFSET
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orr \rv, \rp, #DEBUG_LL_VIRT_BASE
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orr \rp, \rp, #DEBUG_LL_PHYS_BASE
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.endm
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#include <asm/hardware/debug-pl01x.S>
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#elif defined(CONFIG_DEBUG_VEXPRESS_UART0_RS1)
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.macro addruart,rp,rv,tmp
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mov \rp, #DEBUG_LL_UART_OFFSET_RS1
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orr \rv, \rp, #DEBUG_LL_VIRT_BASE
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orr \rp, \rp, #DEBUG_LL_PHYS_BASE_RS1
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.endm
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#include <asm/hardware/debug-pl01x.S>
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#else /* CONFIG_DEBUG_LL_UART_NONE */
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.macro addruart, rp, rv, tmp
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/* Safe dummy values */
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mov \rp, #0
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mov \rv, #DEBUG_LL_VIRT_BASE
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.endm
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.macro senduart,rd,rx
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.endm
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.macro waituart,rd,rx
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.endm
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.macro busyuart,rd,rx
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.endm
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#endif
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