On Tue, May 21, 2024 at 12:12 AM Max Filippov <jcmvb...@gmail.com> wrote: > On Mon, May 20, 2024 at 9:00 AM Jiaxun Yang <jiaxun.y...@flygoat.com> wrote: > > >> diff --git a/arch/xtensa/config.mk b/arch/xtensa/config.mk > > >> index b0809999e403..3ec936272f25 100644 > > >> --- a/arch/xtensa/config.mk > > >> +++ b/arch/xtensa/config.mk > > >> @@ -7,3 +7,6 @@ PLATFORM_CPPFLAGS += -D__XTENSA__ -mlongcalls > > >> -mforce-no-pic \ > > >> -ffunction-sections -fdata-sections > > >> > > >> LDFLAGS_FINAL += --gc-sections > > >> + > > >> +PLATFORM_ELFFLAGS += -B xtensa -O elf32-xtensa-le > > >> + > > > > > > This fixes endianness as little for the whole architecture, but xtensa > > > cores > > > may be either little or big endian. > > > > Thanks for reviewing, I can just add a branch with ifdef > > CONFIG_SYS_BIG_EDNIAN > > if you wish, but I think all CPUs U-Boot support are little endian only? > > > > I have an ongoing series[1] fixing endian selection options, please let me > > know if > > U-Boot do work with big endian Xtensa. > > I had an impression that there's nothing endian-specific in the xtensa port, > so it should work for both little- and big-endian cores. Let me test whether > it's true though (:
Yep, I can confirm that. Importing big endian xtensa core files into the current u-boot (I tested this one: https://github.com/jcmvbkbc/xtensa-toolchain-build/blob/master/overlays/xtensa_test_kc705_be.tar.gz matching cross-compiler is available here: https://github.com/foss-xtensa/toolchain/releases/download/2019.03/x86_64-2019.03-xtensa-test_kc705_be-elf.tar.gz ) and building it for xtfpga produces a working image. -- Thanks. -- Max
