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* microblaze: Fix problem with early_printk in startupMichal Simek2009-05-301-1/+1
| | | | | | | | | | | | | | | | | Problem arise when is incopatibility between kernel/dts/pvr and kernel tries to announce it. Early printk device (uartlite in our case) was in TLB 2 and when kernel extract DTB it necessary to allocate at least one TLB at the end of memory. First free TLB was number two where was early printk. But checking mechanism (kernel/dts/pvr) was after extrahing but TLB 2 was different. This caused that kernel hung up. Moving early printk device to TLB 63 solve it and we don't protect it which means that we can use early_printk messages only for initial parts of kernel then we rewrite TLB 63. Reported-by: Edgar E. Iglesias <edgar.iglesias@gmail.com> Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze_mmu_v2: MakefilesMichal Simek2009-05-261-0/+1
| | | | Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze_mmu_v2: Update signal returning addressMichal Simek2009-05-261-0/+8
| | | | Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze_mmu_v2: Traps MMU updateMichal Simek2009-05-261-0/+34
| | | | Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze_mmu_v2: Enable fork syscall for MMU and add fork as vfork for noMMUMichal Simek2009-05-262-2/+6
| | | | Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze_mmu_v2: Update linker script for MMUMichal Simek2009-05-261-2/+1Star
| | | | Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze_mmu_v2: Add MMU related exceptions handlingMichal Simek2009-05-261-8/+37
| | | | Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze_mmu_v2: Update exception handling - MMU exceptionMichal Simek2009-05-261-7/+739
| | | | Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze_mmu_v2: entry.S, entry.hMichal Simek2009-05-261-0/+1116
| | | | Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze_mmu_v2: MMU asm offset updateMichal Simek2009-05-261-5/+16
| | | | Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze_mmu_v2: Update process creation for MMUMichal Simek2009-05-261-0/+58
| | | | Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze_mmu_v2: TLB low level codeMichal Simek2009-05-261-0/+120
| | | | Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze_mmu_v2: Alocate TLB for early consoleMichal Simek2009-05-261-0/+3
| | | | Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze_mmu_v2: MMU update for startup codeMichal Simek2009-05-261-0/+190
| | | | Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: Fix cast warning for __va in prom.cMichal Simek2009-05-211-2/+3
| | | | | | | __va expect 32bit value but of_read_ulong(of_read_number) returns 64bit value Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: Cleanup compiled-in rootfs in BSS sectionMichal Simek2009-05-211-21/+32
| | | | | | | | | | | This patch is based on patch from Steve Magnani. There were bug for compiled-in rootfs. We have to move moving rootfs which is in BSS section to _ebss section which is at the end of kernel and then clear bss section not vice-versa. Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: Fix early cmdline for CMDLINE_FORCEMichal Simek2009-05-212-8/+3Star
| | | | | | | | | | | | This patch fixed parsing early parameters because current implementation does that early parse DTS command line and then parse CMDLINE line which is compiled-in. For case that DTS doesn't contain command line is copied command line from kernel with is done in prom.c that's why I can remove it from machine_early_init. Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: prepare signal handling for generic unistd.hMichal Simek2009-05-211-76/+3Star
| | | | | | | | | We need to define set_restore_sigmask() in order to get pselect and ppoll. Also, the setup_frame function can not be used when __NR_sigreturn is not defined. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: add security initcallsArnd Bergmann2009-05-211-0/+2
| | | | | | | | The security subsystem has its own initcalls, which need support in vmlinux.lds.S. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: kill incorrect __bad_xchg definitionArnd Bergmann2009-05-211-8/+0Star
| | | | | | | | | | | The whole point of the __bad_xchg declaration in system.h is to give a linker error when a variable of invalid size is passed to __xchg. The out of line definition in traps.c defeats this purpose and does not any value, so remove it here. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: fix __user annotationsArnd Bergmann2009-05-211-12/+10Star
| | | | | | | | | | | | The microblaze signal handling code gets some __user pointers wrong, as shown by sparse. This adds the annotations where appropriate and change sys_rt_sigreturn to correctly pass a user stack down to do_sigaltstack instead of a kernel structure. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: export some symbolsArnd Bergmann2009-05-212-0/+3
| | | | | | | | Some device drivers require the symbols _ebss, kernel_thread, __page_offset or ___range_ok, so export them. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: Fix kind-of-intr checking against number of interruptsMichal Simek2009-05-181-2/+2
| | | | | | + Fix typographic fault. Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: Fix return value for sys_ipcMichal Simek2009-05-011-1/+1
| | | | | Signed-off-by: John Linn <john.linn@xilinx.com> Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: Storage class should be before const qualifierTobias Klauser2009-05-011-2/+2
| | | | | | | | | | | The C99 specification states in section 6.11.5: The placement of a storage-class specifier other than at the beginning of the declaration specifiers in a declaration is an obsolescent feature. Signed-off-by: Tobias Klauser <tklauser@distanz.ch> Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: add parameter to microblaze_read()Coly Li2009-04-231-1/+1
| | | | | | | | | | This patch modifies parameter of microblaze_read() from 'void' to 'struct clocksource *cs', which fixes compile warning for incompatible parameter type. Signed-off-by: Coly Li <coly.li@suse.de> Cc: Michal Simek <monstr@monstr.eu> Cc: Ingo Molnar <mingo@elte.hu> Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: Add STATE_SAVE_ARG_SPACE for noMMU kernel tooMichal Simek2009-04-231-4/+10
| | | | | | | For noMMU kernel this change nothing bring but this change helps with MMU synchronization. Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: Do not check use_dcacheMichal Simek2009-04-231-3/+0Star
| | | | | | | It is not necessary to check cpuinfo.use_dcache because this checking is done in function which call that functions Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: Do not use PVR configuration for broken MB versionMichal Simek2009-04-232-3/+8
| | | | Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: Fix USR1/2 pvr printing messageMichal Simek2009-04-231-2/+2
| | | | Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: iowrite upon timeoutRoel Kluin2009-04-231-1/+1
| | | | | | | | retries reaches -1, so the iowrite occurrs upon timeout. Acked-by: John Williams <john.williams@petalogix.com> Signed-off-by: Roel Kluin <roel.kluin@gmail.com> Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: Remove redundant variableMichal Simek2009-04-231-4/+1Star
| | | | Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: Move start_thread to process.cMichal Simek2009-04-231-0/+9
| | | | | | This change is due to upcomming MMU merge Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: Add missing preadv and pwritev syscallsMichal Simek2009-04-231-0/+2
| | | | Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: Remove sparse error in traps.cMichal Simek2009-04-231-1/+1
| | | | | | | | CHECK arch/microblaze/kernel/traps.c arch/microblaze/kernel/traps.c:37:47: warning: Using plain integer as NULL pointer CC arch/microblaze/kernel/traps.o Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: Rename kernel_mode to pt_mode in pt_regsMichal Simek2009-04-232-3/+3
| | | | Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: Remove while(1) loop from show_regs functionMichal Simek2009-04-231-2/+0Star
| | | | | | | I removed it because of show_regs can't break die function. If process/kernel failed, die (do_exit) function resolve it. Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: remove duplicated #include'sHuang Weiyi2009-04-144-5/+0Star
| | | | | | | | | | | | Remove duplicated #include's in arch/microblaze/include/asm/io.h arch/microblaze/kernel/prom.c arch/microblaze/kernel/ptrace.c arch/microblaze/kernel/signal.c arch/microblaze/kernel/sys_microblaze.c Signed-off-by: Huang Weiyi <weiyi.huang@gmail.com> Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: struct device - replace bus_id with dev_name()Michal Simek2009-04-141-6/+4Star
| | | | Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: Simplify copy_thread()Michal Simek2009-04-141-2/+1Star
| | | | | | | Removing nr parameter from copy_tread function commit 6f2c55b843836d26528c56a0968689accaedbc67 Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze_v8: Makefiles for Microblaze cpuMichal Simek2009-03-272-0/+27
| | | | | | | | | Reviewed-by: Ingo Molnar <mingo@elte.hu> Acked-by: Randy Dunlap <randy.dunlap@oracle.com> Acked-by: John Linn <john.linn@xilinx.com> Acked-by: Stephen Neuendorffer <stephen.neuendorffer@xilinx.com> Acked-by: John Williams <john.williams@petalogix.com> Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze_v8: Interrupt handling and timer supportMichal Simek2009-03-273-0/+538
| | | | | | | | | Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Ingo Molnar <mingo@elte.hu> Reviewed-by: Stephen Neuendorffer <stephen.neuendorffer@xilinx.com> Acked-by: John Linn <john.linn@xilinx.com> Acked-by: John Williams <john.williams@petalogix.com> Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze_v8: traps supportMichal Simek2009-03-271-0/+107
| | | | | | | | Reviewed-by: Ingo Molnar <mingo@elte.hu> Acked-by: John Linn <john.linn@xilinx.com> Acked-by: Stephen Neuendorffer <stephen.neuendorffer@xilinx.com> Acked-by: John Williams <john.williams@petalogix.com> Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze_v8: IPC supportMichal Simek2009-03-271-0/+227
| | | | | | | | Reviewed-by: Ingo Molnar <mingo@elte.hu> Acked-by: John Linn <john.linn@xilinx.com> Acked-by: Stephen Neuendorffer <stephen.neuendorffer@xilinx.com> Acked-by: John Williams <john.williams@petalogix.com> Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze_v8: ptrace supportMichal Simek2009-03-271-0/+182
| | | | | | | | Reviewed-by: Ingo Molnar <mingo@elte.hu> Acked-by: John Linn <john.linn@xilinx.com> Acked-by: Stephen Neuendorffer <stephen.neuendorffer@xilinx.com> Acked-by: John Williams <john.williams@petalogix.com> Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze_v8: process and init task functionMichal Simek2009-03-272-0/+216
| | | | | | | | Reviewed-by: Ingo Molnar <mingo@elte.hu> Acked-by: Stephen Neuendorffer <stephen.neuendorffer@xilinx.com> Acked-by: John Linn <john.linn@xilinx.com> Acked-by: John Williams <john.williams@petalogix.com> Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze_v8: asm-offsets.cMichal Simek2009-03-271-0/+115
| | | | | | | | Reviewed-by: Ingo Molnar <mingo@elte.hu> Acked-by: Stephen Neuendorffer <stephen.neuendorffer@xilinx.com> Acked-by: John Linn <john.linn@xilinx.com> Acked-by: John Williams <john.williams@petalogix.com> Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze_v8: setup.c, setup.h - system settingMichal Simek2009-03-271-0/+199
| | | | | | | | Reviewed-by: Ingo Molnar <mingo@elte.hu> Reviewed-by: Stephen Neuendorffer <stephen.neuendorffer@xilinx.com> Acked-by: John Linn <john.linn@xilinx.com> Acked-by: John Williams <john.williams@petalogix.com> Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze_v8: heartbeat fileMichal Simek2009-03-271-0/+67
| | | | | | | | Reviewed-by: Ingo Molnar <mingo@elte.hu> Acked-by: Stephen Neuendorffer <stephen.neuendorffer@xilinx.com> Acked-by: John Linn <john.linn@xilinx.com> Acked-by: John Williams <john.williams@petalogix.com> Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze_v8: early_printk supportMichal Simek2009-03-271-0/+107
| | | | | | | | Reviewed-by: Ingo Molnar <mingo@elte.hu> Acked-by: Stephen Neuendorffer <stephen.neuendorffer@xilinx.com> Acked-by: John Linn <john.linn@xilinx.com> Acked-by: John Williams <john.williams@petalogix.com> Signed-off-by: Michal Simek <monstr@monstr.eu>
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