| Commit message (Collapse) | Author | Age | Files | Lines | |
|---|---|---|---|---|---|
| * | arm64: debug: clear mdscr_el1 instead of taking the OS lock | Will Deacon | 2013-05-13 | 1 | -2/+1 |
| | | | | | | | | | | | | | | | | | | | | | | During boot, we take the debug OS lock before interrupts are enabled. This is required to prevent clearing of PSTATE.D on the interrupt entry path, which could result in spurious debug exceptions before we've got round to resetting things like the hardware breakpoints registers to a sane state. A problem with this approach is that taking the OS lock prevents an external JTAG debugger from debugging the system, which is especially irritating during boot, where JTAG debugging can be most useful. This patch clears mdscr_el1 rather than taking the lock, clearing the MDE and KDE bits and preventing self-hosted hardware debug exceptions from occurring. Tested-by: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Cc: stable@vger.kernel.org | ||||
| * | arm64: Do not set the SMP/nAMP processor bit | Catalin Marinas | 2012-09-24 | 1 | -11/+0 |
| | | | | | | | | | If such bit exists on a given CPU, it must be set by the firmware or boot-loader prior to starting the kernel (see Documentation/arm64/booting.txt). Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> | ||||
| * | arm64: CPU support | Catalin Marinas | 2012-09-17 | 1 | -0/+186 |
| This patch adds AArch64 CPU specific functionality. It assumes that the implementation is generic to AArch64 and does not require specific identification. Different CPU implementations may require the setting of various ACTLR_EL1 bits but such information is not currently available and it should ideally be pushed to firmware. Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Acked-by: Tony Lindgren <tony@atomide.com> Acked-by: Nicolas Pitre <nico@linaro.org> Acked-by: Olof Johansson <olof@lixom.net> Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com> | |||||
 |
index : blackbird-op-linux | |
| Blackbird™ Linux sources for OpenPOWER | Raptor Computing Systems |
| summaryrefslogtreecommitdiffstats |
|