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linux_old1/arch/arm/include/debug/vexpress.S

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ARM: Add Versatile Express support Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-02-12 05:44:53 +08:00
/* arch/arm/mach-realview/include/mach/debug-macro.S
*
* Debugging macro include header
*
* Copyright (C) 1994-1999 Russell King
* Moved from linux/arch/arm/kernel/debug.S by Ben Dooks
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
ARM: vexpress: Motherboard RS1 memory map support This patch adds support for RS1 memory map based Versatile Express motherboard. Signed-off-by: Pawel Moll <pawel.moll@arm.com>
2011-12-10 02:47:39 +08:00
#define DEBUG_LL_PHYS_BASE 0x10000000
#define DEBUG_LL_UART_OFFSET 0x00009000
#define DEBUG_LL_PHYS_BASE_RS1 0x1c000000
#define DEBUG_LL_UART_OFFSET_RS1 0x00090000
#define DEBUG_LL_VIRT_BASE 0xf8000000
ARM: Add Versatile Express support Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-02-12 05:44:53 +08:00
ARM: vexpress: Config option for early printk console Versatile Express platform can be used in different configurations, the console UART used by early printk may be located at different addresses in the address space. This patch makes it possible to select the base address of a PL011 UART to be used as a console output in the kernel configuration. The default behaviour is still the heuristic detecting memory map on Cortex-A core tiles. The zImage decompressor will use the same configuration values or print out nothing if DEBUG_LL is not enabled. Signed-off-by: Pawel Moll <pawel.moll@arm.com>
2012-07-12 00:07:25 +08:00
#if defined(CONFIG_DEBUG_VEXPRESS_UART0_DETECT)
ARM: add an extra temp register to the low level debugging addruart macro 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>
2011-09-01 10:55:46 +08:00
.macro addruart,rp,rv,tmp
ARM: vexpress: Motherboard RS1 memory map support This patch adds support for RS1 memory map based Versatile Express motherboard. Signed-off-by: Pawel Moll <pawel.moll@arm.com>
2011-12-10 02:47:39 +08:00
@ Make an educated guess regarding the memory map:
ARM: vexpress: Make the debug UART detection more specific 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>
2012-09-05 00:06:20 +08:00
@ - the original A9 core tile (based on ARM Cortex-A9 r0p1)
@ should use UART at 0x10009000
ARM: vexpress: Motherboard RS1 memory map support This patch adds support for RS1 memory map based Versatile Express motherboard. Signed-off-by: Pawel Moll <pawel.moll@arm.com>
2011-12-10 02:47:39 +08:00
@ - all other (RS1 complaint) tiles use UART mapped
@ at 0x1c090000
ARM: vexpress: Make the debug UART detection more specific 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>
2012-09-05 00:06:20 +08:00
mrc p15, 0, \rp, c0, c0, 0
movw \rv, #0xc091
movt \rv, #0x410f
cmp \rp, \rv
ARM: vexpress: Motherboard RS1 memory map support This patch adds support for RS1 memory map based Versatile Express motherboard. Signed-off-by: Pawel Moll <pawel.moll@arm.com>
2011-12-10 02:47:39 +08:00
@ Original memory map
moveq \rp, #DEBUG_LL_UART_OFFSET
orreq \rv, \rp, #DEBUG_LL_VIRT_BASE
orreq \rp, \rp, #DEBUG_LL_PHYS_BASE
@ RS1 memory map
movne \rp, #DEBUG_LL_UART_OFFSET_RS1
orrne \rv, \rp, #DEBUG_LL_VIRT_BASE
orrne \rp, \rp, #DEBUG_LL_PHYS_BASE_RS1
ARM: Add Versatile Express support Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-02-12 05:44:53 +08:00
.endm
#include <asm/hardware/debug-pl01x.S>
ARM: vexpress: Config option for early printk console Versatile Express platform can be used in different configurations, the console UART used by early printk may be located at different addresses in the address space. This patch makes it possible to select the base address of a PL011 UART to be used as a console output in the kernel configuration. The default behaviour is still the heuristic detecting memory map on Cortex-A core tiles. The zImage decompressor will use the same configuration values or print out nothing if DEBUG_LL is not enabled. Signed-off-by: Pawel Moll <pawel.moll@arm.com>
2012-07-12 00:07:25 +08:00
#elif defined(CONFIG_DEBUG_VEXPRESS_UART0_CA9)
.macro addruart,rp,rv,tmp
mov \rp, #DEBUG_LL_UART_OFFSET
orr \rv, \rp, #DEBUG_LL_VIRT_BASE
orr \rp, \rp, #DEBUG_LL_PHYS_BASE
.endm
#include <asm/hardware/debug-pl01x.S>
#elif defined(CONFIG_DEBUG_VEXPRESS_UART0_RS1)
.macro addruart,rp,rv,tmp
mov \rp, #DEBUG_LL_UART_OFFSET_RS1
orr \rv, \rp, #DEBUG_LL_VIRT_BASE
orr \rp, \rp, #DEBUG_LL_PHYS_BASE_RS1
.endm
#include <asm/hardware/debug-pl01x.S>
#else /* CONFIG_DEBUG_LL_UART_NONE */
.macro addruart, rp, rv, tmp
/* Safe dummy values */
mov \rp, #0
mov \rv, #DEBUG_LL_VIRT_BASE
.endm
.macro senduart,rd,rx
.endm
.macro waituart,rd,rx
.endm
.macro busyuart,rd,rx
.endm
#endif