- 19 7月, 2011 1 次提交
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由 Dave Martin 提交于
Currently, the documented kernel entry requirements are not explicit about whether the kernel should be entered in ARM or Thumb, leading to an ambiguitity about how to enter Thumb-2 kernels. As a result, the kernel is reliant on the zImage decompressor to enter the kernel proper in the correct instruction set state. This patch changes the boot entry protocol for head.S and Image to be the same as for zImage: in all cases, the kernel is now entered in ARM. Documentation/arm/Booting is updated to reflect this new policy. A different rule will be needed for Cortex-M class CPUs as and when support for those lands in mainline, since these CPUs don't support the ARM instruction set at all: a note is added to the effect that the kernel must be entered in Thumb on such systems. Signed-off-by: NDave Martin <dave.martin@linaro.org> Acked-by: NNicolas Pitre <nicolas.pitre@linaro.org> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 16 2月, 2011 1 次提交
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由 Russell King 提交于
Since the debug macros no longer depend on the machine type information, the machine type lookup can be deferred to setup_arch() in setup.c which simplifies the code somewhat. We also move the __error_a functionality into setup.c for displaying a message when a bad machine ID is passed to the kernel via the LL debug code. We also log this into the kernel ring buffer which makes it possible to retrieve the message via a debugger. Original idea from Grant Likely. Acked-by: NGrant Likely <grant.likely@secretlab.ca> Tested-by: NTony Lindgren <tony@atomide.com> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 08 10月, 2010 1 次提交
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由 Russell King 提交于
nommu can jump directly to __mmap_switched without the absolute address branching which the mmuful kernel does. Acked-by: NGreg Ungerer <gerg@uclinux.org> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 24 11月, 2009 1 次提交
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由 Tim Abbott 提交于
This has the consequence of changing the section name used for head code from ".text.head" to ".head.text". Since this commit changes all users in the architecture, this change should be harmless. The .text.head output section is eliminated and the head text code is included at the start of the .init output section. Signed-off-by: NTim Abbott <tabbott@ksplice.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Acked-by: NSam Ravnborg <sam@ravnborg.org> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 24 7月, 2009 2 次提交
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由 Catalin Marinas 提交于
The patch removes the "mrc" instruction in head-nommu.S overriding the r0 register containing the value to be written in the CP15 system control register. Signed-off-by: NCatalin Marinas <catalin.marinas@arm.com>
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由 Catalin Marinas 提交于
This patch implements the ARM/Thumb-2 unified kernel start-up and exception handling code. Signed-off-by: NCatalin Marinas <catalin.marinas@arm.com>
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- 01 9月, 2008 1 次提交
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由 Catalin Marinas 提交于
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: NCatalin Marinas <catalin.marinas@arm.com> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 07 8月, 2008 1 次提交
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由 Russell King 提交于
There are 43 includes of asm/mach-types.h by files that don't reference anything from that file. Remove these unnecessary includes. Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 08 5月, 2007 1 次提交
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由 Russell King 提交于
Commit 86c0baf1 highlighted that we may end up with the head text placed elsewhere in the kernel image. Introduce a new .text.head section to contain the initial kernel startup code, and always place this section at the beginning of the kernel image. Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 30 11月, 2006 1 次提交
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由 Russell King 提交于
These files want to provide/access ELF hwcap information, so should be including asm/elf.h rather than asm/procinfo.h Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 29 9月, 2006 1 次提交
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由 Hyok S. Choi 提交于
In nommu mode, the exception vector location depends on the platforms. Some of the implementations may have some special exception control forwarding method in their ROM/flash and for some of them has its own re-mapping mechanism by the h/w. This patch introduces a special configuration CONFIG_CPU_HIGH_VECTOR which turns on the CR_V bit in nommu mode. The CR_V bit is turned off by default. This feature depends on CP15 and does not supported by ARM740. Signed-off-by: NHyok S. Choi <hyok.choi@samsung.com> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 28 9月, 2006 1 次提交
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由 Hyok S. Choi 提交于
All the current CP15 access codes in ARM arch can be categorized and conditioned by the defines as follows: Related operation Safe condition a. any CP15 access !CPU_CP15 b. alignment trap CPU_CP15_MMU c. D-cache(C-bit) CPU_CP15 d. I-cache CPU_CP15 && !( CPU_ARM610 || CPU_ARM710 || CPU_ARM720 || CPU_ARM740 || CPU_XSCALE || CPU_XSC3 ) e. alternate vector CPU_CP15 && !CPU_ARM740 f. TTB CPU_CP15_MMU g. Domain CPU_CP15_MMU h. FSR/FAR CPU_CP15_MMU For example, alternate vector is supported if and only if "CPU_CP15 && !CPU_ARM740" is satisfied. Signed-off-by: NHyok S. Choi <hyok.choi@samsung.com> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 01 7月, 2006 1 次提交
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由 Jörn Engel 提交于
Signed-off-by: NJörn Engel <joern@wohnheim.fh-wedel.de> Signed-off-by: NAdrian Bunk <bunk@stusta.de>
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- 25 6月, 2006 1 次提交
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由 Russell King 提交于
DEFAULT_FIQ was entirely unused. MODE_* are just redefinitions of *_MODE. Use *_MODE instead. Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 05 5月, 2006 1 次提交
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由 Uwe Zeisberger 提交于
Patch from Uwe Zeisberger added the following constants: - MACHINFO_TYPE - MACHINFO_NAME - MACHINFO_PHYSIO - MACHINFO_PGOFFIO - PROCINFO_INITFUNC - PROCINFO_MMUFLAGS and removed their definition from head.S and head-nommu.S Signed-off-by: NUwe Zeisberger <Uwe_Zeisberger@digi.com> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 24 4月, 2006 1 次提交
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由 Hyok S. Choi 提交于
This patch fix compilation problem of start-up codes. (head-nommu.S, arch/arm/kernel/Makefile) Signed-off-by: NHyok S. Choi <hyok.choi@samsung.com> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 27 3月, 2006 1 次提交
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由 Hyok S. Choi 提交于
This patch adds nommu version start-up code head-nommu.S. The common part of the start-up codes is moved to head-common.S. Signed-off-by: NHyok S. Choi <hyok.choi@samsung.com> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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