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linux-sg2042/arch/arm/mach-tegra/headsmp.S

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[ARM] tegra: SMP support Signed-off-by: Colin Cross <ccross@android.com> Signed-off-by: Erik Gilling <konkers@android.com>
2010-02-22 09:46:23 +08:00
#include <linux/linkage.h>
#include <linux/init.h>
ARM: tegra: clean up the common assembly macros into sleep.h There are some common macros for Tegra low-level assembly code. Clean up them into one header file and move the definitions that will be re-used into it as well. Signed-off-by: Joseph Lo <josephl@nvidia.com> Signed-off-by: Stephen Warren <swarren@nvidia.com>
2012-08-16 17:31:50 +08:00
#include "sleep.h"
ARM: tegra: rework Tegra secondary CPU core bringup Prepare the Tegra secondary CPU core bringup code for other Tegra variants. The reset handler is also generalized to allow for future introduction of powersaving modes which turn off the CPU cores. Based on work by: Scott Williams <scwilliams@nvidia.com> Chris Johnson <cwj@nvidia.com> Colin Cross <ccross@android.com> Signed-off-by: Peter De Schrijver <pdeschrijver@nvidia.com> Acked-by: Stephen Warren <swarren@nvidia.com> Tested-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Olof Johansson <olof@lixom.net>
2012-02-10 07:47:45 +08:00
[ARM] tegra: SMP support Signed-off-by: Colin Cross <ccross@android.com> Signed-off-by: Erik Gilling <konkers@android.com>
2010-02-22 09:46:23 +08:00
.section ".text.head", "ax"
ARM: tegra: make device can run on UP The reset handler code is used for either UP or SMP. To make Tegra device can compile for UP. It needs to be moved to another file that is not SMP only. This is because the reset handler also be needed by CPU idle "powered-down" mode. So we also need to put the reset handler init function in non-SMP only and init them always. And currently the implementation of the reset handler to know which CPU is OK to bring up was identital with "cpu_present_mask". But the "cpu_present_mask" did not initialize yet when the reset handler init function was moved to init early function. We use the "cpu_possible_mask" to replace "cpu_present_mask". Then it can work on both UP and SMP case. Signed-off-by: Joseph Lo <josephl@nvidia.com> [swarren: dropped the move of v7_invalidate_l1() from one file to another, to avoid conflicts with Pavel's cleanup of this function, adjust Makefile so each line only contains 1 file.] Signed-off-by: Stephen Warren <swarren@nvidia.com>
2013-01-04 17:32:22 +08:00
[ARM] tegra: SMP support Signed-off-by: Colin Cross <ccross@android.com> Signed-off-by: Erik Gilling <konkers@android.com>
2010-02-22 09:46:23 +08:00
ENTRY(tegra_secondary_startup)
ARM: tegra: do v7_invalidate_l1 only when CPU is Cortex-A9 The v7_invalidate_l1 was used for the L1 cache that come out from reset in a undefined state. This is no need for Cortex-A15. We do it for A9 only. Signed-off-by: Joseph Lo <josephl@nvidia.com> Signed-off-by: Stephen Warren <swarren@nvidia.com>
2013-07-03 17:50:37 +08:00
check_cpu_part_num 0xc09, r8, r9
bleq v7_invalidate_l1
[ARM] tegra: SMP support Signed-off-by: Colin Cross <ccross@android.com> Signed-off-by: Erik Gilling <konkers@android.com>
2010-02-22 09:46:23 +08:00
b secondary_startup
ENDPROC(tegra_secondary_startup)