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* microblaze: Support word copying in copy_tofrom_userMichal Simek2010-04-01
| | | | | | | | Word copying is used only for aligned addresses. Here is space for improving to use any better copying technique. Look at memcpy implementation. Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: Print early printk information to log bufferMichal Simek2010-04-01
| | | | | | | If early printk console is not enabled then all messages are written to log buffer. Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: head.S typo fixMichal Simek2010-04-01
| | | | | | I forget to change register name in comments. Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: Use MICROBLAZE_TLB_SIZE in asm codeMichal Simek2010-04-01
| | | | | | | TLB size was hardcoded in asm code. This patch brings ability to change TLB size only in one place. (mmu.h). Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: Kconfig Fix - pciMichal Simek2010-04-01
| | | | | | I forget to remove pci Kconfig option. Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: Adding likely macrosMichal Simek2010-04-01
| | | | | | | On the base on GCOV analytics is helpful to add likely/unlikely macros. Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: Add .type and .size to ASM functionsMichal Simek2010-04-01
| | | | | | Cachegrind analysis need this fix to be able to log asm functions. Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: Fix TLB macrosMichal Simek2010-04-01
| | | | | | To be able to do trace TLB operations. Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: Use instruction with delay slotMichal Simek2010-04-01
| | | | | | Sync labels. Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: Remove additional resr and rear loadingMichal Simek2010-04-01
| | | | | | RESR and REAR uses the same regs in whole file. Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: Change register usage for ESR and EARMichal Simek2010-04-01
| | | | | | | | This change synchronize register usage in code. ESR = R4 EAR = R3 Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: Prepare work for optimization in exception codeMichal Simek2010-04-01
| | | | | | Any sync branch must follow mts instructions not mfs. Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: Add DEBUG optionMichal Simek2010-04-01
| | | | | | Disable debug option in asm code. Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: Support systems without lmb bramMichal Simek2010-04-01
| | | | | | | | | | | | | | | | | | | | When the system has no lmb bram, main memory should be start from zero because of microblaze vectors. DTS fragment could look like: DDR2_SDRAM: memory@0 { device_type = "memory"; reg = < 0x0 0x10000000 >; } ; Then you have to setup CONFIG_KERNEL_BASE_ADDR=0 which caused that kernel physical start address will be zero. On reset vector place will be jump to 0x100 and on 0x100 starts kernel text. You have to solve how to load the kernel before cpu starts. Tested with XMD. Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: uaccess: Sync strlen, strnlen, copy_to/from_userMichal Simek2010-04-01
| | | | | | Last sync. Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: uaccess: Unify __copy_tofrom_userMichal Simek2010-04-01
| | | | | | Move to generic location. Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: uaccess: Move functions to generic locationMichal Simek2010-04-01
| | | | | | noMMU and MMU use them. Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: uaccess: Fix put_user for noMMUMichal Simek2010-04-01
| | | | | | | | Here is small regression on dhrystone tests and I think that on all benchmarking tests. It is due to better checking mechanism in put_user macro Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: uaccess: Fix get_user macro for noMMUMichal Simek2010-04-01
| | | | | | Use unified version. Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: uaccess: fix clear_user for noMMU kernelMichal Simek2010-04-01
| | | | | | | Previous patches fixed only MMU version and this is the first patch for noMMU kernel Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: uaccess: Fix strncpy_from_user functionMichal Simek2010-04-01
| | | | | | Generic implementation for noMMU and MMU version Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: uaccess: fix copy_from_user macroMichal Simek2010-04-01
| | | | | | copy_from_user macro also use copy_tofrom_user function Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: uaccess: copy_to_user unificationMichal Simek2010-04-01
| | | | | | | noMMU and MMU kernel will use copy copy_tofrom_user asm implementation. Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: uaccess: sync put/get/clear_user macrosMichal Simek2010-04-01
| | | | | | Add macro description and resort. Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: uaccess: fix put_user and get_user macrosMichal Simek2010-04-01
| | | | | | Use FIXUP macros and resort them. Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: uaccess: fix __get_user_asm macroMichal Simek2010-04-01
| | | | | | It is used __FIXUP_SECTION and __EX_TABLE_SECTION macros. Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: uaccess: fix clean user macroMichal Simek2010-04-01
| | | | | | | | This is the first patch which does uaccess unification. I choosed to do several patches to be able to use bisect in future if any fault happens. Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: move noMMU __range_ok function to uaccess.hMichal Simek2010-04-01
| | | | | | | The same noMMU and MMU functions should be placed in one file. Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: Move exception_table_entry upwardMichal Simek2010-04-01
| | | | | | Just sort to be able remove whole block. Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: Remove segment.hMichal Simek2010-04-01
| | | | | | | I would like to use asm-generic uaccess.h where are segment macros defined. This is just first step. Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: Remove memset in free_init_pagesMichal Simek2010-04-01
| | | | | | We don't need to do it. Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: Makefile cleanupsArun Bhanu2010-04-01
| | | | | | | | | | | | If CONFIG_INITRAMFS_SOURCE is set, "scripts/gen_initramfs_list.sh" checks if the cpio image exists. Remove the duplicate check from the Makefile. Remove the "clean-kernel" variable which is unused in the Makefile and is not used by the Kbuild. Signed-off-by: Arun Bhanu <arun@bhanu.net> Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: Fix Makefile to delete build generated filesArun Bhanu2010-04-01
| | | | | | | | | | | | | | | | | 'make clean' does not to delete the following build generated file: arch/microblaze/boot/linux.bin.ub 'make mrproper' does not to delete the following build generated files: arch/microblaze/boot/simpleImage.* Fix the Makefile to delete these build generated files. See [1] for a discussion on why simpleImage.* files are deleted with 'make mrproper' and not with 'make clean'. [1] http://lkml.org/lkml/2010/3/12/96 Signed-off-by: Arun Bhanu <arun@bhanu.net> Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: Add a missing single quote to make 'make help' happyArun Bhanu2010-04-01
| | | | | | | | | | | | 'make ARCH=microblaze help' fails with the following error due to a missing single quote. /bin/sh: -c: line 0: unexpected EOF while looking for matching `'' /bin/sh: -c: line 1: syntax error: unexpected end of file make: *** [help] Error 2 Signed-off-by: Arun Bhanu <arun@bhanu.net> Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: Fix "kstack=" parsingSteven J. Magnani2010-04-01
| | | | | | | | The "kstack=" command line parameter is not parsed correctly. All proper values are interpreted as zero. Signed-off-by: Steven J. Magnani <steve@digidescorp.com> Signed-off-by: Michal Simek <monstr@monstr.eu>
* Merge branch 'for-linus' of git://git.monstr.eu/linux-2.6-microblazeLinus Torvalds2010-03-18
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 'for-linus' of git://git.monstr.eu/linux-2.6-microblaze: (27 commits) microblaze: entry.S use delay slot for return handlers microblaze: Save current task directly microblaze: Simplify entry.S - save/restore r3/r4 - ret_from_trap microblaze: PCI early support for noMMU system microblaze: Fix dma alloc and free coherent dma functions microblaze: Add consistent code microblaze: pgtable.h: move consistent functions microblaze: Remove ancient Kconfig option for consistent mapping microblaze: Remove VMALLOC_VMADDR microblaze: Add define for ASM_LOOP microblaze: Preliminary support for dma drivers microblaze: remove trailing space in messages microblaze: Use generic show_mem() microblaze: Change temp register for cmdline microblaze: Preliminary support for dma drivers microblaze: Move cache function to cache.c microblaze: Add support from PREEMPT microblaze: Add support for Xilinx PCI host bridge microblaze: Enable PCI, missing files microblaze: Add core PCI files ...
| * microblaze: entry.S use delay slot for return handlersMichal Simek2010-03-11
| | | | | | | | Signed-off-by: Michal Simek <monstr@monstr.eu>
| * microblaze: Save current task directlyMichal Simek2010-03-11
| | | | | | | | Signed-off-by: Michal Simek <monstr@monstr.eu>
| * microblaze: Simplify entry.S - save/restore r3/r4 - ret_from_trapMichal Simek2010-03-11
| | | | | | | | | | | | | | There is possible to save r3/r4 at the beggining of user part before calling handlers and at the end restore it. Signed-off-by: Michal Simek <monstr@monstr.eu>
| * microblaze: PCI early support for noMMU systemMichal Simek2010-03-11
| | | | | | | | Signed-off-by: Michal Simek <monstr@monstr.eu>
| * microblaze: Fix dma alloc and free coherent dma functionsMichal Simek2010-03-11
| | | | | | | | | | | | | | | | | | | | We have to use consistent code to be able to do coherent dma function. In consistent code is used cache inhibit page mapping. Xilinx reported that there is bug in Microblaze for WB and d-cache_always use option. Microblaze 7.30.a should be first version where is this bug removed. Signed-off-by: Michal Simek <monstr@monstr.eu>
| * microblaze: Add consistent codeMichal Simek2010-03-11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Remove ancient Kconfig option for consistent code. MMU uses cache inhibit pages. noMMU uses UNCACHE SHADOW feature where is used double ram size. For example: Physical ram is 256MB and cache are setup to cover the same size. But if you setup in HW that size is 512MB and cache covers 256MB than you can use adresses from 256-512MB without caches and correspond with 0-256MB with cache. That's why I am using dcache base/high addresses to find out uncache area. Signed-off-by: Michal Simek <monstr@monstr.eu>
| * microblaze: pgtable.h: move consistent functionsMichal Simek2010-03-11
| | | | | | | | | | | | Consistent functions will be used for noMMU and MMU kernels. Signed-off-by: Michal Simek <monstr@monstr.eu>
| * microblaze: Remove ancient Kconfig option for consistent mappingMichal Simek2010-03-11
| | | | | | | | | | | | We don't use CONSISTENT option from Kconfig that's why I am removing them. Signed-off-by: Michal Simek <monstr@monstr.eu>
| * microblaze: Remove VMALLOC_VMADDRMichal Simek2010-03-11
| | | | | | | | Signed-off-by: Michal Simek <monstr@monstr.eu>
| * microblaze: Add define for ASM_LOOPMichal Simek2010-03-11
| | | | | | | | | | | | It is default option but both options must be measured. Signed-off-by: Michal Simek <monstr@monstr.eu>
| * microblaze: Preliminary support for dma driversMichal Simek2010-03-11
| | | | | | | | | | | | | | | | I found several problems for ll_temac driver and on system with WB. This early fix should fix it. I will clean this patch before I will add it to mainline Signed-off-by: Michal Simek <monstr@monstr.eu>
| * microblaze: remove trailing space in messagesFrans Pop2010-03-11
| | | | | | | | | | | | | | Signed-off-by: Frans Pop <elendil@planet.nl> Cc: microblaze-uclinux@itee.uq.edu.au Cc: Michal Simek <monstr@monstr.eu> Signed-off-by: Michal Simek <monstr@monstr.eu>
| * microblaze: Use generic show_mem()Michal Simek2010-03-11
| | | | | | | | | | | | | | | | Remove arch-specific show_mem() in favor of the generic version. It is based on powerpc patch. bda2fa535564ace56a395d5b65c6dc81305401fa Signed-off-by: Michal Simek <monstr@monstr.eu>
| * microblaze: Change temp register for cmdlineMichal Simek2010-03-11
| | | | | | | | | | | | | | | | | | | | For copy was used r7 register when CONFIG_CMDLINE_BOOL option is enabled. But r7 stores pointer to fdt that's why machine_early_init not detect compiled-in DTB. I also moved kernel PID setup to have TLB init in one block Signed-off-by: Michal Simek <monstr@monstr.eu>
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