| # Configuration for Linux on ARM. |
| # Generating binaries for the ARMv4T architecture and higher |
| # |
| # Supporting armv4 (without thumb) does not make much sense since |
| # it's mostly an obsoleted instruction set architecture (only available |
| # in StrongArm and arm8). Supporting armv4 will require a lot of conditional |
| # code in assembler source since the bx (branch and exchange) instruction is |
| # not supported. |
| # |
| $(warning ARMv4t support is currently a work in progress. It does not work right now!) |
| ARCH_ARM_HAVE_THUMB_SUPPORT := false |
| ARCH_ARM_HAVE_THUMB_INTERWORKING := false |
| ARCH_ARM_HAVE_64BIT_DATA := false |
| ARCH_ARM_HAVE_HALFWORD_MULTIPLY := false |
| ARCH_ARM_HAVE_CLZ := false |
| ARCH_ARM_HAVE_FFS := false |
| |
| DEFAULT_TARGET_CPU := arm920t |
| |
| # Note: Hard coding the 'tune' value here is probably not ideal, |
| # and a better solution should be found in the future. |
| # |
| arch_variant_cflags := -march=armv4t -mtune=arm920t -D__ARM_ARCH_4T__ |
