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

/* SPDX-License-Identifier: GPL-2.0-only */
/* 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
 */

#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_UART_PHYS_CRX		0xb0090000

#define DEBUG_LL_VIRT_BASE		0xf8000000

#if defined(CONFIG_DEBUG_VEXPRESS_UART0_DETECT)

		.macro	addruart,rp,rv,tmp
		.arch   armv7-a

		@ Make an educated guess regarding the memory map:
		@ - the original A9 core tile (based on ARM Cortex-A9 r0p1)
		@   should use UART at 0x10009000
		@ - all other (RS1 complaint) tiles use UART mapped
		@   at 0x1c090000
		mrc	p15, 0, \rp, c0, c0, 0
		movw	\rv, #0xc091
		movt	\rv, #0x410f
		cmp	\rp, \rv

		@ 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

		.endm

#include <debug/pl01x.S>
#endif
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 Based on 2 normalized pattern(s): 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 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 # extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 4122 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Enrico Weigelt <info@metux.net> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190604081206.933168790@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 2019-06-04 10:11:33 +02:00			`/* SPDX-License-Identifier: GPL-2.0-only */`
ARM: Add Versatile Express support Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> 2010-02-11 21:44:53 +00:00			`/* 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`
			`*/`

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> 2011-12-09 18:47:39 +00:00			`#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`

ARM: vexpress: Add Cortex-R Series UART, selectable via DEBUG_LL The Cortex-R series processors on Versatile Express have a different memory map to the RS1 and CA9X4 tiles. Most of the platform difference can be expressed in device-trees, but the UART definitions for LL_DEBUG cannot. This patch defines the UART location for R-Series processors on versatile-express, allowing low-level debug and output from the decompressor. These definitions are selectable via Kconfig Signed-off-by: Jonathan Austin <jonathan.austin@arm.com> CC: Pawel Moll <pawel.moll@arm.com> 2012-08-30 13:46:44 +01:00			`#define DEBUG_LL_UART_PHYS_CRX 0xb0090000`

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> 2011-12-09 18:47:39 +00:00			`#define DEBUG_LL_VIRT_BASE 0xf8000000`
ARM: Add Versatile Express support Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> 2010-02-11 21:44:53 +00:00
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> 2012-07-11 17:07:25 +01:00			`#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> 2011-08-31 22:55:46 -04:00			`.macro addruart,rp,rv,tmp`
ARM: vexpress: fix ll debug code when building multiplatform After "ARM: vexpress: Make the debug UART detection more specific", building allyesconfig in linux-next now gives me: arch/arm/kernel/debug.S: Assembler messages: arch/arm/kernel/debug.S:81: Error: selected processor does not support ARM mode `movw r2,#0xc 091' arch/arm/kernel/debug.S:81: Error: selected processor does not support ARM mode `movt r2,#0x4 10f' arch/arm/kernel/debug.S:97: Error: selected processor does not support ARM mode `movw r2,#0xc 091' arch/arm/kernel/debug.S:97: Error: selected processor does not support ARM mode `movt r2,#0x4 10f' arch/arm/kernel/debug.S:104: Error: selected processor does not support ARM mode `movw r3,#0x c091' arch/arm/kernel/debug.S:104: Error: selected processor does not support ARM mode `movt r3,#0x 410f' Since the code can never get executed on ARMv6 but might be built in a configuration that has ARMv6 enabled, it's safe to just mark it in the assembly source for being ARMv7-only. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Pawel Moll <pawel.moll@arm.com> 2012-11-08 14:05:23 +00:00			`.arch armv7-a`
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> 2011-12-09 18:47:39 +00:00
			`@ 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> 2012-09-04 17:06:20 +01:00			`@ - 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> 2011-12-09 18:47:39 +00:00			`@ - 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> 2012-09-04 17:06:20 +01:00			`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> 2011-12-09 18:47:39 +00:00
			`@ 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> 2010-02-11 21:44:53 +00:00			`.endm`

ARM: debug: move PL01X debug include into arch/arm/include/debug/ Now that the PL01X debug include can mostly stand alone without requiring platforms to provide any macros, move it into the debug directory so it can be directly included. This allows us to get rid of a lot of debug-macros include files. The autodetect case for Versatile Express and the ux500 are left alone; these are more complicated implementations. Acked-by: Rob Herring <rob.herring@calxeda.com> Acked-by: Ryan Mallon <rmallon@gmail.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> 2013-07-07 12:36:46 +01:00			`#include <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> 2012-07-11 17:07:25 +01:00			`#endif`