Signed-off-by: Raphael Poggi <poggi.raph@xxxxxxxxx> --- arch/arm/Kconfig | 23 +++++++++++++++++++++++ arch/arm/cpu/Kconfig | 33 ++++++++++++++++++++++++++++++++- 2 files changed, 55 insertions(+), 1 deletion(-) diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index 1fc887b..986fdaa 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -315,6 +315,29 @@ config ARM_BOARD_APPEND_ATAG endmenu +choice + prompt "Barebox code model" + help + You should only select this option if you have a workload that + actually benefits from 64-bit processing or if your machine has + large memory. You will only be presented a single option in this + menu if your system does not support both 32-bit and 64-bit modes. + +config 32BIT + bool "32-bit barebox" + depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL + help + Select this option if you want to build a 32-bit barebox. + +config 64BIT + bool "64-bit barebox" + depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL + select ARCH_DMA_ADDR_T_64BIT + help + Select this option if you want to build a 64-bit barebox. + +endchoice + menu "ARM specific settings" config ARM_OPTIMZED_STRING_FUNCTIONS diff --git a/arch/arm/cpu/Kconfig b/arch/arm/cpu/Kconfig index 4f5d9b6..450a6d5 100644 --- a/arch/arm/cpu/Kconfig +++ b/arch/arm/cpu/Kconfig @@ -1,8 +1,14 @@ comment "Processor Type" +config PHYS_ADDR_T_64BIT + bool + config CPU_32 bool - default y + +config CPU_64 + bool + select PHYS_ADDR_T_64BIT # Select CPU types depending on the architecture selected. This selects # which CPUs we support in the kernel image, and the compiler instruction @@ -69,6 +75,12 @@ config CPU_V7 bool select CPU_32v7 +# ARMv8 +config CPU_V8 + bool + select CPU_64v8 + select CPU_SUPPORTS_64BIT_KERNEL + config CPU_XSC3 bool select CPU_32v4T @@ -84,15 +96,23 @@ config CPU_XSCALE # This defines the compiler instruction set which depends on the machine type. config CPU_32v4T bool + select CPU_32 config CPU_32v5 bool + select CPU_32 config CPU_32v6 bool + select CPU_32 config CPU_32v7 bool + select CPU_32 + +config CPU_64v8 + bool + select CPU_64 comment "processor features" @@ -124,3 +144,14 @@ config CACHE_L2X0 bool "Enable L2x0 PrimeCell" depends on MMU && ARCH_HAS_L2X0 +config SYS_SUPPORTS_32BIT_KERNEL + bool + +config SYS_SUPPORTS_64BIT_KERNEL + bool + +config CPU_SUPPORTS_32BIT_KERNEL + bool + +config CPU_SUPPORTS_64BIT_KERNEL + bool -- 2.1.0 _______________________________________________ barebox mailing list barebox@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/barebox