This minimal support will be used by Xilinx ZynqMP R5 cpu.
Signed-off-by: Michal Simek michal.simek@xilinx.com ---
arch/arm/Kconfig | 6 ++++++ arch/arm/cpu/armv7r/Makefile | 4 ++++ arch/arm/cpu/armv7r/config.mk | 3 +++ arch/arm/cpu/armv7r/cpu.c | 24 ++++++++++++++++++++++++ arch/arm/cpu/armv7r/start.S | 17 +++++++++++++++++ 5 files changed, 54 insertions(+) create mode 100644 arch/arm/cpu/armv7r/Makefile create mode 100644 arch/arm/cpu/armv7r/config.mk create mode 100644 arch/arm/cpu/armv7r/cpu.c create mode 100644 arch/arm/cpu/armv7r/start.S
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index b5fbce03667d..b10804f55224 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -192,6 +192,10 @@ config CPU_V7M select THUMB2_KERNEL select SYS_CACHE_SHIFT_5
+config CPU_V7R + bool + select SYS_CACHE_SHIFT_6 + config CPU_PXA bool select SYS_CACHE_SHIFT_5 @@ -209,6 +213,7 @@ config SYS_CPU default "arm1176" if CPU_ARM1176 default "armv7" if CPU_V7 default "armv7m" if CPU_V7M + default "armv7r" if CPU_V7R default "pxa" if CPU_PXA default "sa1100" if CPU_SA1100 default "armv8" if ARM64 @@ -223,6 +228,7 @@ config SYS_ARM_ARCH default 6 if CPU_ARM1176 default 7 if CPU_V7 default 7 if CPU_V7M + default 7 if CPU_V7R default 5 if CPU_PXA default 4 if CPU_SA1100 default 8 if ARM64 diff --git a/arch/arm/cpu/armv7r/Makefile b/arch/arm/cpu/armv7r/Makefile new file mode 100644 index 000000000000..3c66976dfa62 --- /dev/null +++ b/arch/arm/cpu/armv7r/Makefile @@ -0,0 +1,4 @@ +# SPDX-License-Identifier: GPL-2.0 + +extra-y := start.o +obj-y += cpu.o diff --git a/arch/arm/cpu/armv7r/config.mk b/arch/arm/cpu/armv7r/config.mk new file mode 100644 index 000000000000..224d191ff846 --- /dev/null +++ b/arch/arm/cpu/armv7r/config.mk @@ -0,0 +1,3 @@ +# SPDX-License-Identifier: GPL-2.0 + +PLATFORM_CPPFLAGS += -mcpu=cortex-r5 -DARMR5 diff --git a/arch/arm/cpu/armv7r/cpu.c b/arch/arm/cpu/armv7r/cpu.c new file mode 100644 index 000000000000..e384a530c5e0 --- /dev/null +++ b/arch/arm/cpu/armv7r/cpu.c @@ -0,0 +1,24 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * (C) Copyright 2018 Xilinx, Inc. (Michal Simek) + */ + +#include <common.h> + +/* + * This is called right before passing control to + * the Linux kernel point. + */ +int cleanup_before_linux(void) +{ + return 0; +} + +/* + * Perform the low-level reset. + */ +void reset_cpu(ulong addr) +{ + while (1) + ; +} diff --git a/arch/arm/cpu/armv7r/start.S b/arch/arm/cpu/armv7r/start.S new file mode 100644 index 000000000000..d6e8eecf54b7 --- /dev/null +++ b/arch/arm/cpu/armv7r/start.S @@ -0,0 +1,17 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/* + * (C) Copyright 2015 + * Kamil Lulko, kamil.lulko@gmail.com + * + */ + +#include <asm/assembler.h> + +.globl reset +.type reset, %function +reset: + W(b) _main + +.globl c_runtime_cpu_setup +c_runtime_cpu_setup: + mov pc, lr