Commit graph

5 commits

Author SHA1 Message Date
Huifeng Zhang
c34960bc87 arch: arm64: Unify the initialization of MMU and MPU
Because MMU and MPU should not be enabled together and they provide
the same functionalities.

Signed-off-by: Huifeng Zhang <Huifeng.Zhang@arm.com>
2021-07-13 09:30:29 -04:00
Jiafei Pan
7889364771 arm64: refine the code for primary core checking
We can find caller of z_arm64_mmu_init is on primary
core or not, so no need to check mpidr, just add a
function parameter.

Signed-off-by: Jiafei Pan <Jiafei.Pan@nxp.com>
2021-04-19 11:00:05 -04:00
Nicolas Pitre
88477906f0 arm64: hold curr_cpu instance in tpidrro_el0
Let's fully exploit tpidrro_el0 by storing in it the current CPU's
struct _cpu instance alongside the userspace mode flag bit. This
greatly simplifies the code needed to get at the cpu structure, and
this paves the way to much simpler multi cluster support, as there
is no longer the need to decode MPIDR all the time.

The same code is used in the !SMP case as there are benefits there too
such as avoiding the literal pool, and it looks cleaner.

The tpidrro_el0 value is no longer stored in the exception stack frame.
Instead, we simply restore the user mode flag based on the SPSR value.
This way, more flag bits could be used independently in the future.

Signed-off-by: Nicolas Pitre <npitre@baylibre.com>
2021-04-14 15:06:21 -04:00
Flavio Ceolin
4f5460ad6a arch: arm: Fix 10.4 violations
Both operands of an operator in which the usual arithmetic
conversions are performed shall have the same essential
type category.

Signed-off-by: Flavio Ceolin <flavio.ceolin@intel.com>
2021-04-10 09:59:37 -04:00
Carlo Caione
3539c2fbb3 arm/arm64: Make ARM64 a standalone architecture
Split ARM and ARM64 architectures.

Details:

- CONFIG_ARM64 is decoupled from CONFIG_ARM (not a subset anymore)
- Arch and include AArch64 files are in a dedicated directory
  (arch/arm64 and include/arch/arm64)
- AArch64 boards and SoC are moved to soc/arm64 and boards/arm64
- AArch64-specific DTS files are moved to dts/arm64
- The A72 support for the bcm_vk/viper board is moved in the
  boards/bcm_vk/viper directory

Signed-off-by: Carlo Caione <ccaione@baylibre.com>
2021-03-31 10:34:33 -05:00
Renamed from arch/arm/core/aarch64/prep_c.c (Browse further)