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History for barebox / arch / arm / cpu / mmu.c

2016-01-11	5e24688 Browse files » ARM: mmu: Add VBAR setup ... Add code to make sure that normal vector exception table, when it is used due to unavailability of the high vector table, was not re-mapped from 0x0 via VBAR by someone else before us. Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Andrey Smirnov authored on 10 Jan 2016 Sascha Hauer committed on 11 Jan 2016
2015-11-13	63b8d87 Browse files » ARM: Fix bug in remap_range ... remap_range takes generic MAP_CACHED/MAP_UNCACHED flags which are then translated into the corresponding ARM specific bits. We call remap_range internally from dma_alloc_* aswell, but instead of passing the generic flags we pass the ARM specific bits. Fix this by creating an internal __remap_range function which takes the ARM specific bits and use it where appropriate. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Sascha Hauer committed on 13 Nov 2015
2015-11-03	b792124 Browse files » rework remap_range ... remap_range is for remapping regions with different cache attributes. It is implemented for ARM and PowerPC only, the other architectures only provide stubs. Currently the new cache attributes are passed in an architecture specific way and the attributes have to be retrieved by calls to mmu_get_pte_cached_flags() and mmu_get_pte_uncached_flags(). Make this simpler by providing architecture independent flags which can be directly passed to remap_range() Also provide a MAP_ARCH_DEFAULT flag and a arch_can_remap() function. The MAP_ARCH_DEFAULT defaults to whatever caching type the architecture has as default. the arch_can_remap() function returns true if the architecture can change the cache attributes, false otherwise. This allows the memtest code to better find out what it has to do. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Sascha Hauer committed on 3 Nov 2015
2015-09-21	29986f9 Browse files » ARM: MMU: fixed calculation of number of PTEs ... barebox uses 4KiB pages so that number of PTEs is 'size >> 12', not 'size >> 10'. Thie 'size >> 10' limit is not an immediate problem because it allocates too much PTEs only which are not used. But it can overflow an integer multiplication ('i * PAGE_SIZE') which causes undefined behaviour with gcc5. Signed-off-by: Enrico Scholz <enrico.scholz@sigma-chemnitz.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Enrico Scholz authored on 17 Sep 2015 Sascha Hauer committed on 21 Sep 2015
2015-09-21	485ef52 Browse files » ARM: MMU: fixed dma_flush_range() call ... dma_flush_range() expects an address as second argument, not a size. Signed-off-by: Enrico Scholz <enrico.scholz@sigma-chemnitz.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Enrico Scholz authored on 17 Sep 2015 Sascha Hauer committed on 21 Sep 2015
2015-09-01	f387bc9 Browse files » Merge branch 'for-next/fb-imx-ipu-v3' Sascha Hauer committed on 1 Sep 2015
2015-08-07	3c76d02 Browse files » implement dma_alloc_writecombine ... Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Sascha Hauer committed on 7 Aug 2015
2015-08-07	9a56bfa Browse files » ARM: MMU: Fix order when flushing inner/outer cache ... When flushing the cache L1 has to be flushed before L2, not the other way round. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Sascha Hauer committed on 7 Aug 2015
2015-03-09	4680b37 Browse files » Merge branch 'for-next/streaming-dma' ... Conflicts: drivers/mci/dw_mmc.c Sascha Hauer committed on 9 Mar 2015
2015-03-09	22e42ca Browse files » Merge branch 'for-next/arm' Sascha Hauer committed on 9 Mar 2015
2015-03-06	0e06a77 Browse files » ARM: MMU: unexport cache maintenance functions ... Those should only be used internally. All users should rather use the streaming DMA API, which does proper cache maintenance. Signed-off-by: Lucas Stach <dev@lynxeye.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Lucas Stach authored on 5 Mar 2015 Sascha Hauer committed on 6 Mar 2015
	cdb471b Browse files » ARM: implement streaming DMA ops ... Signed-off-by: Lucas Stach <dev@lynxeye.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Lucas Stach authored on 5 Mar 2015 Sascha Hauer committed on 6 Mar 2015
	e05f958 Browse files » ARM: change dma_alloc/free_coherent to match other architectures ... As a lot drivers currently rely on the 1:1 virt->phys mapping on ARM we define DMA_ADDRESS_BROKEN to mark them. In order to use them on other architectures with a different mapping they need proper fixing. Signed-off-by: Lucas Stach <dev@lynxeye.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Lucas Stach authored on 5 Mar 2015 Sascha Hauer committed on 6 Mar 2015
2015-02-25	a0513aa Browse files » arm: virt_to_phys should take a volatile ptr ... So users can pass in device memory pointers without provoking warnings. Signed-off-by: Lucas Stach <dev@lynxeye.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Lucas Stach authored on 24 Feb 2015 Sascha Hauer committed on 25 Feb 2015
2015-02-11	c022522 Browse files » ARM: remove unused variable ... arm_architecture is unused, remove it. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Sascha Hauer committed on 11 Feb 2015
2015-01-30	3113eaf Browse files » ARM: delete useless and wrong comments ... These comments are wrong. Anyway, they do not carry useful information. Delete. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Masahiro Yamada authored on 29 Jan 2015 Sascha Hauer committed on 30 Jan 2015
2015-01-08	d875357 Browse files » sizes.h: move include/sizes.h to include/linux/sizes.h ... This file originates in Linux. Linux has it under include/linux/ directory since commit dccd2304cc90. Let's move it to the same place as well in barebox. This commit was generated by the following commands: find -name '*.[chS]' \| xargs sed -i -e 's:<sizes.h>:<linux/sizes.h>:' git mv include/sizes.h include/linux/ Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Masahiro Yamada authored on 8 Jan 2015 Sascha Hauer committed on 8 Jan 2015
2014-07-22	2419683 Browse files » mmu: flush ttb in map_io_sections ... We need to flush out the ttb in order to make the changes observable to the page walker. Signed-off-by: Lucas Stach <l.stach@pengutronix.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Lucas Stach authored on 6 Jul 2014 Sascha Hauer committed on 22 Jul 2014
2014-03-18	5a6410e Browse files » ARM: MMU: Fix memory reaching to the end of address space ... For memory reaching the end of the address space phys + bank->size overflows to 0. Fix this by right shifting phys and bank->size before adding them. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Tested-by: Sean Cross <xobs@kosagi.com> Sascha Hauer committed on 18 Mar 2014
2014-03-17	7933e34 Browse files » ARM: MMU: Add some debugging aids and hints ... - If we have no memory registered in mmu_init() it's a critical bug. panic in this case. - If we do not have a ttb when dma_alloc_coherent or remap_range is called it's also a critical bug. Panic in this case. - if find_pte is called with an address outside our memory banks dump the memory banks and the address to give more clue what went wrong. Also add some hints what might went wrong to the code. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Sascha Hauer committed on 17 Mar 2014
2013-10-06	138f604 Browse files » arm: mmu: be more verbose if ttb setup fails ... Signed-off-by: Jan Luebbe <jlu@pengutronix.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Jan Luebbe authored on 2 Oct 2013 Sascha Hauer committed on 6 Oct 2013
2013-04-26	82095bf Browse files » ARM: mmu: Use PAGE_ALIGN in dma_free_coherent ... We PAGE_ALIGN the size in dma_alloc_coherent so do it also when free the memory. Use PAGE_SIZE instead of magic numbers. Signed-off-by: Jan Weitzel <j.weitzel@phytec.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Jan Weitzel authored on 26 Apr 2013 Sascha Hauer committed on 26 Apr 2013
2013-03-07	b08e085 Browse files » ARN: fixup vector addresses for relocatable binaries ... With relocatable binaries the vector addresses cannot be supplied by the linker. This adds support for fixing them up during runtime. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Sascha Hauer committed on 7 Mar 2013
2013-02-11	6061d3b Browse files » arm: move outercase to cpu.c as some SoC as the ux500 always need to flush the l2x0 ... Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Jean-Christophe PLAGNIOL-VILLARD authored on 11 Feb 2013 Sascha Hauer committed on 11 Feb 2013
2013-02-11	caf0661 Browse files » ARM: mmu: Clear unpredictable bits for translation table ... Signed-off-by: Alexander Shiyan <shc_work@mail.ru> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Alexander Shiyan authored on 8 Feb 2013 Sascha Hauer committed on 11 Feb 2013
2013-02-04	02c0f0b Browse files » ARM mmu: pickup already enabled mmu ... Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Sascha Hauer committed on 4 Feb 2013
2013-02-04	da5fe0b Browse files » Merge branch 'for-next/misc' Sascha Hauer committed on 4 Feb 2013
2013-01-27	5596d88 Browse files » ARM mmu: Use pr_debug ... Also, specify a pr_fmt and add missing GPL header. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Sascha Hauer committed on 27 Jan 2013
2013-01-25	56f99ec Browse files » arm-mmu: switch pte flags vars to lower case ... Old cache/uncache pte flags were declared as defines. Since these flags are determine at runtime they are static variables. This patch switch the naming style of these variables to lower case which is typically used for variables. Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Alexander Aring authored on 24 Jan 2013 Sascha Hauer committed on 25 Jan 2013
2013-01-18	d32b75f Browse files » arm-mmu: move PAGE_ALIGN macro to common.h ... PAGE_ALIGN macro is needed to align addresses to page boundaries. Move this macro to another PAGE_* defines. Commands which uses remap_range function needs this macro. Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Alexander Aring authored on 15 Jan 2013 Sascha Hauer committed on 18 Jan 2013