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* cramfs: take headers to fs/cramfsAl Viro2014-01-251-1/+1
| | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* blackfin: scb: Add system crossbar init code.Steven Miao2013-09-131-0/+6
| | | | | | | | If SCB exists in select blackfin cpu, developer can change the SCB priority in kernel configuration. Signed-off-by: Sonic Zhang <sonic.zhang@analog.com> Signed-off-by: Steven Miao <realmz6@gmail.com>
* blackfin: delete __cpuinit usage from all blackfin filesPaul Gortmaker2013-07-141-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The __cpuinit type of throwaway sections might have made sense some time ago when RAM was more constrained, but now the savings do not offset the cost and complications. For example, the fix in commit 5e427ec2d0 ("x86: Fix bit corruption at CPU resume time") is a good example of the nasty type of bugs that can be created with improper use of the various __init prefixes. After a discussion on LKML[1] it was decided that cpuinit should go the way of devinit and be phased out. Once all the users are gone, we can then finally remove the macros themselves from linux/init.h. Note that some harmless section mismatch warnings may result, since notify_cpu_starting() and cpu_up() are arch independent (kernel/cpu.c) are flagged as __cpuinit -- so if we remove the __cpuinit from arch specific callers, we will also get section mismatch warnings. As an intermediate step, we intend to turn the linux/init.h cpuinit content into no-ops as early as possible, since that will get rid of these warnings. In any case, they are temporary and harmless. This removes all the arch/blackfin uses of the __cpuinit macros from all C files. Currently blackfin does not have any __CPUINIT used in assembly files. [1] https://lkml.org/lkml/2013/5/20/589 Cc: Mike Frysinger <vapier@gentoo.org> Cc: Bob Liu <lliubbo@gmail.com> Cc: Sonic Zhang <sonic.zhang@analog.com> Cc: uclinux-dist-devel@blackfin.uclinux.org Acked-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
* blackfin: fix bootup core clock and system clock displayJames Cosin2013-05-091-1/+1
| | | | | | | | | From: James Cosin <jkosin@intcomgrp.com> fixes the number of digits to 6 after the decimal point to regain the significant 0s in the frequency after the decimal point. Signed-off-by: Steven Miao <realmz6@gmail.com>
* mtd/uclinux: Use generic __bss_stop instead of _ebssGeert Uytterhoeven2012-06-271-1/+0
| | | | | | | | | | | | | The standard (see BSS_SECTION() in <asm-generic/vmlinux.lds.h> and <asm-generic/sections.h>) symbol for the end of BSS is __bss_stop. This allows to remove all local declarations that have been added to several architectures just to please CONFIG_MTD_UCLINUX. Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Acked-by: Paul Mundt <lethal@linux-sh.org> Acked-by: Mike Frysinger <vapier@gentoo.org> Acked-by: Michal Simek <monstr@monstr.eu> Acked-by: Greg Ungerer <gerg@uclinux.org>
* blackfin: fix build after add bf60x mach/pm.hSteven Miao2012-05-211-0/+3
| | | | | Signed-off-by: Steven Miao <realmz6@gmail.com> Signed-off-by: Bob Liu <lliubbo@gmail.com>
* blackfin: bf60x: Rename the DDR controller macroSonic Zhang2012-05-211-1/+1
| | | | | | | | Rename the DDR controller macro from DDR0 to DMC0 to avoid confustion for bf60x. Signed-off-by: Sonic Zhang <sonic.zhang@analog.com> Signed-off-by: Bob Liu <lliubbo@gmail.com>
* blackfin: bf60x: cleanup get clock codeSonic Zhang2012-05-211-42/+22
| | | | | | | Remove redundance code for get clock. Signed-off-by: Sonic Zhang <sonic.zhang@analog.com> Signed-off-by: Bob Liu <lliubbo@gmail.com>
* blackfin: bf60x: make clock changeable in kernel menuconfigBob Liu2012-05-211-19/+5
| | | | | | Add clock changeable support in kernel menuconfig for bf60x. Signed-off-by: Bob Liu <lliubbo@gmail.com>
* Blackfin: fix unused clk var warningMike Frysinger2012-05-211-0/+2
| | | | | | | | This is only used on BF60x code (so this patch should get squashed into the original one that added it). Signed-off-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: Bob Liu <lliubbo@gmail.com>
* blackfin: add bf60x to current frameworkBob Liu2012-05-211-18/+141
| | | | | | This patch added bf60x to current blackfin kernel framework. Signed-off-by: Bob Liu <lliubbo@gmail.com>
* new helper: ext2_image_size()Al Viro2012-03-311-3/+4
| | | | | | | | ... implemented that way since the next commit will leave it almost alone in ext2_fs.h - most of the file (including struct ext2_super_block) is going to move to fs/ext2/ext2.h. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* Disintegrate asm/system.h for Blackfin [ver #2]David Howells2012-03-211-0/+1
| | | | | | | | Disintegrate asm/system.h for Blackfin. Signed-off-by: David Howells <dhowells@redhat.com> cc: uclinux-dist-devel@blackfin.uclinux.org Signed-off-by: Bob Liu <lliubbo@gmail.com>
* bf54x: get mem size: missing break in switchSteven Miao2012-01-091-4/+12
| | | | | Signed-off-by: Steven Miao <realmz6@gmail.com> Signed-off-by: Bob Liu <lliubbo@gmail.com>
* Blackfin: optimize double fault boot checkingMike Frysinger2011-07-231-7/+9
| | | | | | | | This moves the double fault data used at boot time into a single struct which can then easily be addressed with indexed loads rather than having to explicitly load multiple addresses. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* Blackfin: convert old cpumask API to new oneKOSAKI Motohiro2011-05-251-2/+2
| | | | | | | old cpu_xxx() APIs is planned to removed later. then, converted. Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* Blackfin: optimize MMR reads during startup a bitMike Frysinger2011-05-251-11/+9
| | | | | | | | Since the value of these MMRs aren't changing, store the value in a local variable and work off of that. This avoids multiple MMR reads which are implicitly forced by the volatile markings. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* Blackfin: move internal irq prototypes out of global namespaceMike Frysinger2011-05-251-0/+1
| | | | | | | | These are only used in a few internal Blackfin places, so move the irq prototypes out of the global header and into the internal irq one. No functional changes other than shuffling locales. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* Blackfin: bf51x/bf52x: fix typo in hysteresis MMR namesMike Frysinger2011-05-251-4/+4
| | | | Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* Blackfin: SMP: drop unused blackfin_cpudata.idle pointerMike Frysinger2011-05-251-1/+0
| | | | | | | Not sure when we stopped using this field, but nothing in the tree uses this now, so punt it. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* Blackfin: SMP: fix cpudata cache setupMike Frysinger2011-05-251-2/+2
| | | | | | | | | | After some cache setup reordering changesets, the blackfin_cpudata init was left behind. While cpu0's data was correct, cpu1's data was not. Not that big of a deal as these are only used in the cpuinfo output, but should still be fixed. So move the setup of these fields to the common cache setup function to avoid this happening again in the future. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* Blackfin: clean up /proc/cpuinfo outputMike Frysinger2011-05-251-8/+8
| | | | | | | | | The smp flush lines are too long and have too many newlines, so scale them back to match the other lines. The %p modifier shows "(null)" for 0, so use %08x instead. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* Blackfin: SMP: work around anomaly 05000491Sonic Zhang2011-03-181-0/+37
| | | | | | | | | | | | | | | | In order to safely work around anomaly 05000491, we have to execute IFLUSH from L1 instruction sram. The trouble with multi-core systems is that all L1 sram is visible only to the active core. So we can't just place the functions into L1 and call it directly. We need to setup a jump table and place the entry point in external memory. This will call the right func based on the active core. In the process, convert from the manual relocation of a small bit of code into Core B's L1 to the more general framework we already have in place for loading arbitrary pieces of code into L1. Signed-off-by: Sonic Zhang <sonic.zhang@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* Blackfin: BF51x/BF52x: support GPIO Hysteresis/Schmitt Trigger optionsMichael Hennerich2010-08-061-0/+7
| | | | | | | | | Newer parts have optional Hysteresis/Schmitt Trigger options to help with dirty signals. So add some kconfig options for tuning this and enable it by default for people. Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* Blackfin: another year of changes (update copyright in boot log)Mike Frysinger2010-05-221-2/+2
| | | | Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* Blackfin: rewrite resync_core_{i,d}cache() SMP logic to avoid per_cpu dataGraf Yang2010-03-091-2/+2
| | | | | | | | | | | This functions are implicitly called by core functions like cpu_relax(), and since those functions may be called early on before common code has initialized the per-cpu data area, we need to tweak the stats gathering. Now the statistics are maintained in common bss which makes these funcs safe to use as soon as the C runtime env is setup. Signed-off-by: Graf Yang <graf.yang@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* Blackfin: initial XIP supportBarry Song2010-03-091-3/+13
| | | | | Signed-off-by: Barry Song <barry.song@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* Blackfin: replace harcoded define with proper THREAD_SIZE macroBarry Song2010-03-091-1/+1
| | | | | Signed-off-by: Barry Song <barry.song@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* Blackfin: fix MPU page permission masks overflow when dealing with async memoryBarry Song2010-03-091-0/+5
| | | | | | | | | | | | | Attempting to use the MPU while doing XIP out of parallel flash hooked up to the async memory bus would often result in random crashes as the MPU slowly corrupted memory. The fallout here is that the async banks gain MPU protection from user space too. So any accesses have to go through the mmap() interface rather than just using hardcoded pointers. Signed-off-by: Barry Song <barry.song@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* Blackfin: allow boards to register early devicesSonic Zhang2010-03-091-0/+7
| | | | | Signed-off-by: Sonic Zhang <sonic.zhang@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* Blackfin: drop 4KB reserve at end of memoryBarry Song2009-12-151-5/+0
| | | | | | | | | | | | | The point of this small chunk was to avoid anomaly 05000310. This never really seemed to do what it was intended though -- no valid CPLBs exist over the reserved memory, and there is often memory before it anyways (due to the uClinux MTD and/or reserved DMA region). Plus, it doesn't address the L1 instruction case. So drop this chunk as it wastes memory and is affront to humanity. Signed-off-by: Barry Song <barry.song@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* Blackfin: announce current cpu rev when bootingRobin Getz2009-12-151-1/+1
| | | | | | | | User reports rarely include full information, so include this important tidbit up front. It's also good to know at a glance in general. Signed-off-by: Robin Getz <robin.getz@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* Blackfin: calculate on-chip lengths at link time rather than run timeMike Frysinger2009-12-151-23/+16
| | | | | | | Since the link sizes never change at runtime, push the calculation out to the linker script to save some useless calculation costs. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* Blackfin: mass clean up of copyright/licensing infoRobin Getz2009-10-071-5/+1
| | | | | | | | | | | | | | | | | | Bill Gatliff & David Brownell pointed out we were missing some copyrights, and licensing terms in some of the files in ./arch/blackfin, so this fixes things, and cleans them up. It also removes: - verbose GPL text(refer to the top level ./COPYING file) - file names (you are looking at the file) - bug url (it's in the ./MAINTAINERS file) - "or later" on GPL-2, when we did not have that right It also allows some Blackfin-specific assembly files to be under a BSD like license (for people to use them outside of Linux). Signed-off-by: Robin Getz <robin.getz@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* Blackfin: fix spelling in a few commentsMichael Hennerich2009-09-161-2/+2
| | | | | Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* Blackfin: punt dead cache locking codeMike Frysinger2009-09-161-51/+0
| | | | | | | No one uses these functions, and some are duplicate of existing C code. So just punt the whole thing. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* Blackfin: catch hardware errors earlier during bootingRobin Getz2009-09-161-0/+3
| | | | | | | | | | | | | | | | | | Allow hardware errors to be caught during early portions of booting, and leave something in the shadow console that people can use to debug their system with (to be printed out by the bootloader on next reset). This enables the hardare error interrupts in head.S, allowing us to find hardware errors when they happen (well, as much as you can with a hardware error) and prints out the trace if it is enabled. This will catch errors (like booting the wrong image on a 533) which previously resulted in a infinite loop/hang, as well as random hardware errors before before setup_arch(). To disable this debug only feature - turn off EARLY_PRINTK. Signed-off-by: Robin Getz <robin.getz@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* Blackfin: add an early shadow consoleRobin Getz2009-09-161-0/+2
| | | | | | | | | Add a memory based shadow console to keep a copy of the printk buffer in a location which can be found externally. This allows bootloaders to locate and utilize the log buffer in case of silent (early/resume/etc...) crashes. Signed-off-by: Robin Getz <robin.getz@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* Blackfin: clean up early memory setup codeRobin Getz2009-09-161-28/+32
| | | | | | | | Remove code duplication, and only print out memory warnings when they are an actual problem. Signed-off-by: Robin Getz <robin.getz@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* Blackfin: drop per-cpu loops_per_jiffy trackingMichael Hennerich2009-07-161-4/+3
| | | | | | | | | | | On Blackfin SMP, a per-cpu loops_per_jiffy is pointless since both cores always run at the same CCLK. In addition, the current implementation has flaws since the main consumer for loops_per_jiffy (asm/delay.h) uses the global kernel loops_per_jiffy and not the per_cpu one. So punt all of the per-cpu handling and go back to the global shared one. Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* Blackfin: drop duplicate runtime checking of anomaly 05000448Robin Getz2009-07-161-4/+0
| | | | | | | | | We already catch this anomaly at compile time, and the runtime version is such that it ends up checking on all parts rather than just the ones that might actually have it. Signed-off-by: Robin Getz <robin.getz@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* Blackfin: fix silent crash when no uClinux MTD filesystem existsRobin Getz2009-07-161-10/+16
| | | | | | | | | | | | | Since we need to relocate the attached filesystem with the uClinux MTD map (to handle some anomalies), we need to know its real filesize. If we boot a kernel without a filesystem actually attached, we end up blindly reading and copying garbage (since there is no magic value to detect validity). Often times this results in an early crash and no output. So add a few basic sanity checks before operating on things to catch the majority of cases. Signed-off-by: Robin Getz <robin.getz@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* Blackfin: drop dead flash_probe callMike Frysinger2009-07-161-7/+0
| | | | | | | | | There are no CONFIG_{BLK,CHR}_DEV_FLASH Kconfig options, and there is no flash_probe() function, so not really sure what this code is all about. Seems to be dead code that stretches way back to the start of the Blackfin port. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* Remove multiple KERN_ prefixes from printk formatsJoe Perches2009-07-081-20/+21
| | | | | | | | | | | | | | Commit 5fd29d6ccbc98884569d6f3105aeca70858b3e0f ("printk: clean up handling of log-levels and newlines") changed printk semantics. printk lines with multiple KERN_<level> prefixes are no longer emitted as before the patch. <level> is now included in the output on each additional use. Remove all uses of multiple KERN_<level>s in formats. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Blackfin: fix early crash when booting on wrong cpuRobin Getz2009-06-221-8/+15
| | | | | | | | | | Make sure we process the kernel command line before poking the hardware, so that we can process early printk. This helps ensure that if you boot a kernel configured for a different processor, something will be left in the log buffer. Signed-off-by: Robin Getz <robin.getz@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* Blackfin: decouple unrelated cache settings to get exact behaviorJie Zhang2009-06-221-18/+78
| | | | | | | | | | | | | | | The current cache options don't really represent the hardware features. They end up setting different aspects of the hardware so that the end result is to turn on/off the cache. Unfortunately, when we hit cache problems with the hardware, it's difficult to test different settings to root cause the problem. The current settings also don't cleanly allow for different caching behaviors with different regions of memory. So split the configure options such that they properly reflect the settings that are applied to the hardware. Signed-off-by: Jie Zhang <jie.zhang@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* Blackfin: fix accidental reset in some boot modesSonic Zhang2009-06-221-1/+2
| | | | | | | | | | | | We read the SWRST (Software Reset) register to get at the last reset state, and then we may configure the DOUBLE_FAULT bit to control behavior when a double fault occurs. But if the lower bits of the register is already set (like UART boot mode on a BF54x), we inadvertently make the system reset by writing to the SYSTEM_RESET field at the same time. So make sure the lower 4 bits are always cleared. Signed-off-by: Sonic Zhang <sonic.zhang@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* Blackfin: add blackfin_invalidate_entire_icache for SMP systemsSonic Zhang2009-06-131-0/+3
| | | | | | | | The KGDB code uses this when switching processors to make sure the icache is in a valid state. Signed-off-by: Sonic Zhang <sonic.zhang@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* Blackfin: include the cpu compiled version in /proc/cpuinfoRobin Getz2009-06-131-2/+11
| | | | | | | | Since the compiled-for cpu revision can be significant, include it in the cpuinfo output along side the cpu revision we're currently running on. Signed-off-by: Robin Getz <robin.getz@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* Blackfin: override default uClinux MTD addr/sizeMike Frysinger2009-06-121-4/+7
| | | | | | | | | | Due to a processor anomaly (05000263 to be exact), most Blackfin parts cannot keep the embedded filesystem image directly after the kernel in RAM. Instead, the filesystem needs to be relocated to the end of memory. As such, we need to tweak the map addr/size during boot for Blackfin systems. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
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