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* microblaze: Label local function staticMichal Simek2015-06-081-1/+1
| | | | | | | | | | Warnings found by sparse: arch/microblaze/kernel/dma.c:157:5: warning: symbol 'dma_direct_mmap_coherent' was not declared. Should it be static? arch/microblaze/kernel/kgdb.c:35:14: warning: symbol 'pvr' was not declared. Should it be static? Signed-off-by: Michal Simek <michal.simek@xilinx.com>
* microblaze: Use unsigned type for "for" loop because of comparison-kgdb.cMichal Simek2015-01-051-3/+4
| | | | | | | | | | | | | | | | | | | | This patch removes warnings reported by W=1: arch/microblaze/kernel/kgdb.c: In function 'pt_regs_to_gdb_regs': arch/microblaze/kernel/kgdb.c:43:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] arch/microblaze/kernel/kgdb.c:51:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] arch/microblaze/kernel/kgdb.c: In function 'gdb_regs_to_pt_regs': arch/microblaze/kernel/kgdb.c:77:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] arch/microblaze/kernel/kgdb.c: In function 'sleeping_thread_to_gdb_regs': arch/microblaze/kernel/kgdb.c:99:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] arch/microblaze/kernel/kgdb.c:103:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] Signed-off-by: Michal Simek <michal.simek@xilinx.com>
* microblaze: Declare microblaze_kgdb_break in headerMichal Simek2015-01-051-1/+2
| | | | | | | | This patch removes the warning: arch/microblaze/kernel/kgdb.c:81:6: warning: no previous prototype for 'microblaze_kgdb_break' [-Wmissing-prototypes] Signed-off-by: Michal Simek <michal.simek@xilinx.com>
* microblaze: Don't mark arch_kgdb_ops as const.Graeme Smecher2013-06-261-1/+1
| | | | | | | | | | | | | Other architectures don't do it, and it conflicts with the extern'd definition in include/linux/kgdb.h. The patch fails checkpatch but it reflects current functions declaration and solved compilation error. Signed-off-by: Graeme Smecher <gsmecher@threespeedlogic.com> CC: Michal Simek <monstr@monstr.eu> CC: linux-kernel@vger.kernel.org Signed-off-by: Michal Simek <michal.simek@xilinx.com>
* microblaze: Fix coding style issuesMichal Simek2013-02-121-1/+1
| | | | | | Fix coding style issues reported by checkpatch.pl. Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: KGDB little endian supportMichal Simek2010-10-211-0/+4
| | | | | | | Just need to use little-endian opcode for brki r16, 0x18 Signed-off-by: Michal Simek <monstr@monstr.eu> CC: Jason Wessel <jason.wessel@windriver.com>
* microblaze: kgdb: Remove unused variable and fix return valueMichal Simek2010-10-211-2/+1
| | | | | | | | | | | | | I forget to remove unused variable from kgdb_arch_handle_exception. Fix return value in microblaze_kgdb_break function. Error log: arch/microblaze/kernel/kgdb.c: In function 'microblaze_kgdb_break': arch/microblaze/kernel/kgdb.c:83: warning: 'return' with a value, in function returning void arch/microblaze/kernel/kgdb.c: In function 'kgdb_arch_handle_exception': arch/microblaze/kernel/kgdb.c:119: warning: unused variable 'cpu' Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze: Add KGDB supportMichal Simek2010-08-041-0/+147
Kgdb uses brki r16, 0x18 instruction to call low level _debug_exception function which save current state to pt_regs and call microblaze_kgdb_break function. _debug_exception should be called only from the kernel space. User space calling is not supported because user application debugging uses different handling. pt_regs_to_gdb_regs loads additional special registers which can't be changed * Enable KGDB in Kconfig * Remove ancient not-tested KGDB support * Remove ancient _debug_exception code from entry.S Only MMU KGDB support is supported. Signed-off-by: Michal Simek <monstr@monstr.eu> CC: Jason Wessel <jason.wessel@windriver.com> CC: John Williams <john.williams@petalogix.com> CC: Edgar E. Iglesias <edgar.iglesias@petalogix.com> CC: linux-kernel@vger.kernel.org Acked-by: Jason Wessel <jason.wessel@windriver.com>