Hi everyone,
This series rewrites the Allwinner/sunxi PSCI implementation in C, to make it easier to maintain and extend for the currently unsupported multi-cluster SoCs. The SMP code in the BSP kernels are in C. Having the PSCI code in C as well will make it easier to work on.
To be able to convert the platform bits to C, some common PSCI functions have to be fixed up according to the ARM calling conventions. Function declarations are also needed.
This series is based on sunxi/next. Parts of it will likely conflict with the effort to support PSCI 1.0 on the Freescale LS102xA.
Patch 1 fixes up psci_get_cpu_stack_top.
Patch 2 fixes up the PSCI version of v7_flush_dcache_all.
Patch 3 adds function declarations for some of the common PSCI functions.
Patch 4 fixes issues with reserving memory for the secure section.
Patch 5 unifies the CPUCFG_BASE macro names for various sunxi platforms.
Patch 6 groups cpu core related controls together into one struct per core. This makes it straightforward to access the controls by the cpu index.
Patch 7 adds a missing header to cpucfg.h
Patch 8 adds some missing fields to cpucfg, which were used in the assembly code.
Patch 9 adds the base address for the GIC.
Patch 10 is the new PSCI implementation in C. Almost all of the code is converted, with the exception of initial setup of the stack.
Regards ChenYu
Chen-Yu Tsai (10): ARM: PSCI: use only r0 and r3 in psci_get_cpu_stack_top() ARM: PSCI: save and restore clobbered registers in v7_flush_dcache_all ARM: PSCI: export common PSCI function declarations for C code ARM: allocate extra space for PSCI stack in secure section during link phase sunxi: Make CPUCFG_BASE macro names the same across families sunxi: Group cpu core related controls together sunxi: Add missing linux/types.h header for cpucfg.h sunxi: Add CPUCFG debug lock and sun7i cpu power controls sunxi: Add base address for GIC sunxi: Add PSCI implementation in C
arch/arm/cpu/armv7/psci.S | 20 +- arch/arm/cpu/armv7/sunxi/Makefile | 7 +- arch/arm/cpu/armv7/sunxi/psci.c | 229 ++++++++++++++++++ arch/arm/cpu/armv7/sunxi/psci_head.S | 61 +++++ arch/arm/cpu/armv7/sunxi/psci_sun6i.S | 262 --------------------- arch/arm/cpu/armv7/sunxi/psci_sun7i.S | 237 ------------------- arch/arm/cpu/u-boot.lds | 3 + arch/arm/include/asm/arch-sunxi/cpu_sun4i.h | 17 +- .../asm/arch-sunxi/{cpucfg_sun6i.h => cpucfg.h} | 38 +-- arch/arm/include/asm/arch-sunxi/prcm.h | 6 +- arch/arm/include/asm/psci.h | 8 + 11 files changed, 350 insertions(+), 538 deletions(-) create mode 100644 arch/arm/cpu/armv7/sunxi/psci.c create mode 100644 arch/arm/cpu/armv7/sunxi/psci_head.S delete mode 100644 arch/arm/cpu/armv7/sunxi/psci_sun6i.S delete mode 100644 arch/arm/cpu/armv7/sunxi/psci_sun7i.S rename arch/arm/include/asm/arch-sunxi/{cpucfg_sun6i.h => cpucfg.h} (69%)