aboutsummaryrefslogtreecommitdiff
path: root/arch/arm/kernel/debug.S
AgeCommit message (Collapse)AuthorFilesLines
2019-06-19treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500Thomas Gleixner1-4/+1
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 <[email protected]> Reviewed-by: Enrico Weigelt <[email protected]> Reviewed-by: Kate Stewart <[email protected]> Reviewed-by: Allison Randal <[email protected]> Cc: [email protected] Link: https://lkml.kernel.org/r/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>
2019-02-26ARM: 8844/1: use unified assembler in assembly filesStefan Agner1-1/+1
Use unified assembler syntax (UAL) in assembly files. Divided syntax is considered deprecated. This will also allow to build the kernel using LLVM's integrated assembler. Signed-off-by: Stefan Agner <[email protected]> Acked-by: Nicolas Pitre <[email protected]> Signed-off-by: Russell King <[email protected]>
2017-11-08Merge branches 'fixes', 'misc' and 'sa1111-for-next' into for-nextRussell King1-14/+25
2017-11-06ARM: 8717/2: debug printch/printascii: translate '\n' to "\r\n" not "\n\r"Nicolas Pitre1-11/+14
Some terminals apparently have issues with "\n\r" and mess up the display. Let's use the traditional "\r\n" ordering. Signed-off-by: Nicolas Pitre <[email protected]> Reported-by: Chris Brandt <[email protected]> Tested-by: Chris Brandt <[email protected]> Signed-off-by: Russell King <[email protected]>
2017-10-12ARM: 8704/1: semihosting: use proper instruction on v7m processorsNicolas Pitre1-0/+8
The svc instruction doesn't exist on v7m processors. Semihosting ops are invoked with the bkpt instruction instead. Signed-off-by: Nicolas Pitre <[email protected]> Signed-off-by: Russell King <[email protected]>
2017-10-12ARM: 8703/1: debug.S: move hexbuf to a writable sectionNicolas Pitre1-3/+11
This was located in .text which is meant to be read-only. And in the XIP case this shortcut simply doesn't work and may trigger a Flash controller mode switch and crash the kernel. Move it to the .bss area. Signed-off-by: Nicolas Pitre <[email protected]> Signed-off-by: Russell King <[email protected]>
2015-05-20ARM: unify MMU/!MMU addruart callsStefan Agner1-1/+1
Remove the needless differences between MMU/!MMU addruart calls. This allows to use the same addruart macro on SoC level. Useful for SoC consisting of multiple CPUs with and without MMU such as Freescale Vybrid. Signed-off-by: Stefan Agner <[email protected]> Signed-off-by: Arnd Bergmann <[email protected]>
2014-07-18ARM: convert all "mov.* pc, reg" to "bx reg" for ARMv6+Russell King1-5/+5
ARMv6 and greater introduced a new instruction ("bx") which can be used to return from function calls. Recent CPUs perform better when the "bx lr" instruction is used rather than the "mov pc, lr" instruction, and this sequence is strongly recommended to be used by the ARM architecture manual (section A.4.1.1). We provide a new macro "ret" with all its variants for the condition code which will resolve to the appropriate instruction. Rather than doing this piecemeal, and miss some instances, change all the "mov pc" instances to use the new macro, with the exception of the "movs" instruction and the kprobes code. This allows us to detect the "mov pc, lr" case and fix it up - and also gives us the possibility of deploying this for other registers depending on the CPU selection. Reported-by: Will Deacon <[email protected]> Tested-by: Stephen Warren <[email protected]> # Tegra Jetson TK1 Tested-by: Robert Jarzmik <[email protected]> # mioa701_bootresume.S Tested-by: Andrew Lunn <[email protected]> # Kirkwood Tested-by: Shawn Guo <[email protected]> Tested-by: Tony Lindgren <[email protected]> # OMAPs Tested-by: Gregory CLEMENT <[email protected]> # Armada XP, 375, 385 Acked-by: Sekhar Nori <[email protected]> # DaVinci Acked-by: Christoffer Dall <[email protected]> # kvm/hyp Acked-by: Haojian Zhuang <[email protected]> # PXA3xx Acked-by: Stefano Stabellini <[email protected]> # Xen Tested-by: Uwe Kleine-König <[email protected]> # ARMv7M Tested-by: Simon Horman <[email protected]> # Shmobile Signed-off-by: Russell King <[email protected]>
2013-01-16ARM: compile fix for DEBUG_LL=y && MMU=nUwe Kleine-König1-0/+2
debug_ll_addr is only used on machines with an MMU so it can be #ifdef'ed out safely. This fixes: arch/arm/kernel/debug.S: Assembler messages: arch/arm/kernel/debug.S:104: Error: too many positional arguments The problem was introduced in e5c5f2a ARM: implement debug_ll_io_init(). Signed-off-by: Uwe Kleine-König <[email protected]> Reviewed-by: Stephen Warren <[email protected]> Acked-by: Rob Herring <[email protected]> Signed-off-by: Olof Johansson <[email protected]>
2012-11-05ARM: implement debug_ll_io_init()Rob Herring1-0/+14
When using DEBUG_LL, the UART's (or other HW's) registers are mapped into early page tables based on the results of assembly macro addruart. Later, when the page tables are replaced, the same virtual address must remain valid. Historically, this has been ensured by using defines from <mach/iomap.h> in both the implementation of addruart, and the machine's .map_io() function. However, with the move to single zImage, we wish to remove <mach/iomap.h>. To enable this, the macro addruart may be used when constructing the late page tables too; addruart is exposed as a C function debug_ll_addr(), and used to set up the required mapping in debug_ll_io_init(), which may called on an opt-in basis from a machine's .map_io() function. Signed-off-by: Rob Herring <[email protected]> [swarren: Mask map.virtual with PAGE_MASK. Checked for NULL results from debug_ll_addr (e.g. when selected UART isn't valid). Fixed compile when either !CONFIG_DEBUG_LL or CONFIG_DEBUG_SEMIHOSTING.] Signed-off-by: Stephen Warren <[email protected]> Signed-off-by: Olof Johansson <[email protected]>
2012-09-14ARM: move debug macros to common locationRob Herring1-84/+3
Based on suggestion by Russell King, create a common location for debug macros and select the included debug macro file using config option. Signed-off-by: Rob Herring <[email protected]> Cc: Russell King <[email protected]>
2012-03-29Merge tag 'cleanup2' of ↵Linus Torvalds1-0/+1
git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc Pull "ARM: cleanups of io includes" from Olof Johansson: "Rob Herring has done a sweeping change cleaning up all of the mach/io.h includes, moving some of the oft-repeated macros to a common location and removing a bunch of boiler plate. This is another step closer to a common zImage for multiple platforms." Fix up various fairly trivial conflicts (<mach/io.h> removal vs changes around it, tegra localtimer.o is *still* gone, yadda-yadda). * tag 'cleanup2' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (29 commits) ARM: tegra: Include assembler.h in sleep.S to fix build break ARM: pxa: use common IOMEM definition ARM: dma-mapping: convert ARCH_HAS_DMA_SET_COHERENT_MASK to kconfig symbol ARM: __io abuse cleanup ARM: create a common IOMEM definition ARM: iop13xx: fix missing declaration of iop13xx_init_early ARM: fix ioremap/iounmap for !CONFIG_MMU ARM: kill off __mem_pci ARM: remove bunch of now unused mach/io.h files ARM: make mach/io.h include optional ARM: clps711x: remove unneeded include of mach/io.h ARM: dove: add explicit include of dove.h to addr-map.c ARM: at91: add explicit include of hardware.h to uncompressor ARM: ep93xx: clean-up mach/io.h ARM: tegra: clean-up mach/io.h ARM: orion5x: clean-up mach/io.h ARM: davinci: remove unneeded mach/io.h include [media] davinci: remove includes of mach/io.h ARM: OMAP: Remove remaining includes for mach/io.h ARM: msm: clean-up mach/io.h ...
2012-03-24ARM: 7338/1: add support for early console output via semihostingNicolas Pitre1-1/+24
This is a very simple method for code running in an emulator, or under the supervision of a debugger, to use I/O facilities on the controlling host. Tested with OpenOCD, and ARM's Fast Models. Details on semihosting can be found in chapter 8 of DUI0203I_rvct_developer_guide.pdf from ARM Ltd. Signed-off-by: Nicolas Pitre <[email protected]> Signed-off-by: Russell King <[email protected]>
2012-03-13ARM: create a common IOMEM definitionRob Herring1-0/+1
Several platforms create IOMEM defines for casting to 'void __iomem *', and other platforms are incorrectly using __io() macro for the same purpose. This creates a common definition and removes all the platform specific versions. Rather than try to make linux/io.h and asm/io.h assembly safe, the assembly version of IOMEM is moved into asm/assembler.h. Signed-off-by: Rob Herring <[email protected]> Cc: Russell King <[email protected]> Cc: Sekhar Nori <[email protected]> Cc: Kevin Hilman <[email protected]> Acked-by: H Hartley Sweeten <[email protected]> Cc: Ryan Mallon <[email protected]> Cc: Eric Miao <[email protected]> Cc: Haojian Zhuang <[email protected]> Acked-by: David Brown <[email protected]> Cc: Daniel Walker <[email protected]> Cc: Bryan Huntsman <[email protected]> Cc: Sascha Hauer <[email protected]> Cc: Shawn Guo <[email protected]> Acked-by: Tony Lindgren <[email protected]> Acked-by: Paul Walmsley <[email protected]> Acked-by: Viresh Kumar <[email protected]> Cc: Rajeev Kumar <[email protected]> Cc: Colin Cross <[email protected]> Cc: Olof Johansson <[email protected]> Cc: Stephen Warren <[email protected]> Acked-by: Linus Walleij <[email protected]> Acked-by: Arnd Bergmann <[email protected]>
2011-10-28Merge branch 'devel-stable' of ↵Linus Torvalds1-2/+2
http://ftp.arm.linux.org.uk/pub/linux/arm/kernel/git-cur/linux-2.6-arm * 'devel-stable' of http://ftp.arm.linux.org.uk/pub/linux/arm/kernel/git-cur/linux-2.6-arm: (178 commits) ARM: 7139/1: fix compilation with CONFIG_ARM_ATAG_DTB_COMPAT and large TEXT_OFFSET ARM: gic, local timers: use the request_percpu_irq() interface ARM: gic: consolidate PPI handling ARM: switch from NO_MACH_MEMORY_H to NEED_MACH_MEMORY_H ARM: mach-s5p64x0: remove mach/memory.h ARM: mach-s3c64xx: remove mach/memory.h ARM: plat-mxc: remove mach/memory.h ARM: mach-prima2: remove mach/memory.h ARM: mach-zynq: remove mach/memory.h ARM: mach-bcmring: remove mach/memory.h ARM: mach-davinci: remove mach/memory.h ARM: mach-pxa: remove mach/memory.h ARM: mach-ixp4xx: remove mach/memory.h ARM: mach-h720x: remove mach/memory.h ARM: mach-vt8500: remove mach/memory.h ARM: mach-s5pc100: remove mach/memory.h ARM: mach-tegra: remove mach/memory.h ARM: plat-tcc: remove mach/memory.h ARM: mach-mmp: remove mach/memory.h ARM: mach-cns3xxx: remove mach/memory.h ... Fix up mostly pretty trivial conflicts in: - arch/arm/Kconfig - arch/arm/include/asm/localtimer.h - arch/arm/kernel/Makefile - arch/arm/mach-shmobile/board-ap4evb.c - arch/arm/mach-u300/core.c - arch/arm/mm/dma-mapping.c - arch/arm/mm/proc-v7.S - arch/arm/plat-omap/Kconfig largely due to some CONFIG option renaming (ie CONFIG_PM_SLEEP -> CONFIG_ARM_CPU_SUSPEND for the arm-specific suspend code etc) and addition of NEED_MACH_MEMORY_H next to HAVE_IDE.
2011-10-20ARM: 7137/1: Fix error upon adding LL debugAfzal Mohammed1-2/+2
Upon adding new board LL debug support, if the resultant code addition would not cause PC relative offset of "hexbuf" from "adr r2, hexbuf" (+2) instruction to be representable in a shifted 8-bit value (hence indirectly putting higher aligment requirement on larger offsets), following error occurs, arch/arm/kernel/debug.S: Assembler messages: arch/arm/kernel/debug.S:138: Error: invalid constant (428) after fixup Fix it by bringing "hexbuf" closer so that "adr" can have the offset. Signed-off-by: Afzal Mohammed <[email protected]> Acked-by: Tony Lindgren <[email protected]> Signed-off-by: Russell King <[email protected]>
2011-09-26ARM: add an extra temp register to the low level debugging addruart macroNicolas Pitre1-2/+2
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 <[email protected]> Reviewed-by: Kevin Hilman <[email protected]>
2011-03-28ARM: 6826/1: Merge v6 and v7 DEBUG_LL DCC supportStephen Boyd1-18/+1
The inline assembly differences for v6 vs. v7 are purely optimizations. On a v7 processor, an mrc with the pc sets the condition codes to the 28-31 bits of the register being read. It just so happens that the TX/RX full bits the DCC support code is testing for are high enough in the register to be put into the condition codes. On a v6 processor, this "feature" isn't implemented and thus we have to do the usual read, mask, test operations to check for TX/RX full. Thus, we can drop the v7 implementation and just use the v6 implementation for both. Cc: Tony Lindgren <[email protected]> Signed-off-by: Stephen Boyd <[email protected]> Signed-off-by: Russell King <[email protected]>
2011-02-02ARM: v6k: introduce CPU_V6K optionRussell King1-1/+1
Introduce a CPU_V6K configuration option for platforms to select if they have a V6K CPU core. This allows us to identify whether we need to support ARMv6 CPUs without the V6K SMP extensions at build time. Currently CPU_V6K is just an alias for CPU_V6, and all places which reference CPU_V6 are replaced by (CPU_V6 || CPU_V6K). Select CPU_V6K from platforms which are known to be V6K-only. Acked-by: Tony Lindgren <[email protected]> Tested-by: Sourav Poddar <[email protected]> Tested-by: Will Deacon <[email protected]> Signed-off-by: Russell King <[email protected]>
2010-10-20arm: return both physical and virtual addresses from addruartJeremy Kerr1-3/+19
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 <[email protected]> and Tony Lindgren <[email protected]>, and fix for versatile express from Lorenzo Pieralisi <[email protected]>. Signed-off-by: Jeremy Kerr <[email protected]> Signed-off-by: Lorenzo Pieralisi <[email protected]> Signed-off-by: Jason Wang <[email protected]> Signed-off-by: Tony Lindgren <[email protected]> Tested-by: Kevin Hilman <[email protected]>
2010-10-20arm/debug: consolidate addruart macros for CONFIG_DEBUG_ICEDCCJeremy Kerr1-11/+2
We have the same (empty) macro for all IDEDCC flavours, so consolidate it to one. Signed-off-by: Jeremy Kerr <[email protected]>
2010-02-12ARM: 5910/1: ARM: Add tmp register for addruart and loadspTony Lindgren1-6/+6
Otherwise more complicated uart configuration won't be possible. We can use r1 for tmp register for both head.S and debug.S. NOTE: This patch depends on another patch to add the the tmp register into all debug-macro.S files. That can be done with: $ sed -i -e "s/addruart,rx|addruart, rx/addruart, rx, tmp/" arch/arm/*/include/*/debug-macro.S Signed-off-by: Tony Lindgren <[email protected]> Signed-off-by: Russell King <[email protected]>
2010-01-19ARM: 5884/1: arm: Fix DCC console for v7Tony Lindgren1-0/+20
Without this patch arch/arm/compressed/head.S defaults to generic DCC code that does not work for v7. For more information on the v7 DCC, see Cortex-A8 TRM "12.11.1 Debug communications channel". To use it with post 2.6.33-rc1 or later, you need to have: CONFIG_DEBUG_LL=y ONFIG_DEBUG_ICEDCC=y CONFIG_EARLY_PRINTK=y Earlier kernels need commit 93fd03a8c6728b58879f8af20ffd55d9c32a778b backported. Tested on omap3430. Signed-off-by: Tony Lindgren <[email protected]> Signed-off-by: Russell King <[email protected]>
2009-02-27[ARM] 5412/1: XSCALE: add ice dcc supportJean-Christop PLAGNIOL-VILLARD1-0/+27
SCALE: add ice dcc support Tested on the ixp425 with the ice PEEDI Ack-by: Eric Miao <[email protected]> Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <[email protected]> Signed-off-by: Russell King <[email protected]>
2008-09-01[ARM] 5227/1: Add the ENDPROC declarations to the .S filesCatalin Marinas1-0/+5
This declaration specifies the "function" type and size for various assembly functions, mainly needed for generating the correct branch instructions in Thumb-2. Signed-off-by: Catalin Marinas <[email protected]> Signed-off-by: Russell King <[email protected]>
2008-08-07[ARM] Move include/asm-arm/arch-* to arch/arm/*/include/machRussell King1-1/+1
This just leaves include/asm-arm/plat-* to deal with. Signed-off-by: Russell King <[email protected]>
2006-09-25[ARM] 3838/1: ARM: DCC debug console support for ARM11Tony Lindgren1-1/+34
Adds support for CONFIG_DEBUG_ICEDCC for ARM11. Tested on ARM1136 (OMAP2420). Signed-off-by: Tony Lindgren <[email protected]> Signed-off-by: Russell King <[email protected]>
2006-06-30Remove obsolete #include <linux/config.h>Jörn Engel1-1/+0
Signed-off-by: Jörn Engel <[email protected]> Signed-off-by: Adrian Bunk <[email protected]>
2006-03-21[ARM] Remove unnecessary asm/hardware.h includesRussell King1-1/+0
asm/hardware.h is not required for the majority of processor support files, ioremap support, mm initialisation, acorn IO support, nor the debug code (which picks up its machine specific includes via debug-macros.S) Signed-off-by: Russell King <[email protected]>
2005-04-16Linux-2.6.12-rc2Linus Torvalds1-0/+106
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Powered by cgit, Gruvboxed by Blaster4385.