make_helpers/armv7-a-cpus.mk

   1 #
   2 # Copyright (c) 2017, ARM Limited and Contributors. All rights reserved.
   3 #
   4 # SPDX-License-Identifier: BSD-3-Clause
   5 #
   6
   7 ifneq (${ARCH},aarch32)
   8 $(error ARM_ARCH_MAJOR=7 mandates ARCH=aarch32)
   9 endif
  10
  11 # For ARMv7, set march32 from platform directive ARMV7_CORTEX_Ax=yes
  12 # and ARM_WITH_NEON=yes/no.
  13 #
  14 # GCC and Clang require -march=armv7-a for C-A9 and -march=armv7ve for C-A15.
  15 # armClang requires -march=armv7-a for all ARMv7 Cortex-A. To comply with
  16 # all, just drop -march and supply only -mcpu.
  17
  18 # Platform can override march32-directive through MARCH32_DIRECTIVE
  19 ifdef MARCH32_DIRECTIVE
  20 march32-directive               := $(MARCH32_DIRECTIVE)
  21 else
  22 march32-set-${ARM_CORTEX_A5}    := -mcpu=cortex-a5
  23 march32-set-${ARM_CORTEX_A7}    := -mcpu=cortex-a7
  24 march32-set-${ARM_CORTEX_A9}    := -mcpu=cortex-a9
  25 march32-set-${ARM_CORTEX_A12}   := -mcpu=cortex-a12
  26 march32-set-${ARM_CORTEX_A15}   := -mcpu=cortex-a15
  27 march32-set-${ARM_CORTEX_A17}   := -mcpu=cortex-a17
  28 march32-neon-$(ARM_WITH_NEON)   := -mfpu=neon
  29
  30 # default to -march=armv7-a as target directive
  31 march32-set-yes                 ?= -march=armv7-a
  32 march32-directive               := ${march32-set-yes} ${march32-neon-yes}
  33 endif
  34
  35 # Platform may override these extension support directives:
  36 #
  37 # ARMV7_SUPPORTS_LARGE_PAGE_ADDRESSING
  38 # Defined if core supports the Large Page Addressing extension.
  39 #
  40 # ARMV7_SUPPORTS_VIRTUALIZATION
  41 # Defined if ARMv7 core supports the Virtualization extension.
  42 #
  43 # ARMV7_SUPPORTS_GENERIC_TIMER
  44 # Defined if ARMv7 core supports the Generic Timer extension.
  45
  46 ifeq ($(filter yes,$(ARM_CORTEX_A7) $(ARM_CORTEX_A12) $(ARM_CORTEX_A15) $(ARM_CORTEX_A17)),yes)
  47 $(eval $(call add_define,ARMV7_SUPPORTS_LARGE_PAGE_ADDRESSING))
  48 $(eval $(call add_define,ARMV7_SUPPORTS_VIRTUALIZATION))
  49 $(eval $(call add_define,ARMV7_SUPPORTS_GENERIC_TIMER))
  50 $(eval $(call add_define,ARMV7_SUPPORTS_VFP))
  51 endif
  52
  53 # BRCM_PATCH: 1. BCM63138 (Cortex-A9) does have NEON.
  54 #             2. Even though A9 does not support LARGE_PAGE_ADDRESSING
  55 #                needed to enable it to get compilation going.
  56 ifeq ($(filter yes,$(ARM_CORTEX_A9)),yes)
  57 $(eval $(call add_define,ARMV7_SUPPORTS_LARGE_PAGE_ADDRESSING))
  58 $(eval $(call add_define,ARMV7_SUPPORTS_VFP))
  59 endif
  60
  61 ifeq ($(ARM_CORTEX_A5),yes)
  62 $(eval $(call add_define,ARM_CORTEX_A5))
  63 endif