From 09af39f649dac66c2681ca53977275fe876690cc Mon Sep 17 00:00:00 2001 From: Max Filippov Date: Mon, 26 Jul 2021 07:25:28 -0700 Subject: xtensa: use register window specific opcodes only when present xtensa core may be configured without register windows support, don't use register window specific opcodes in that case. Use window register specific opcodes to initialize hardware or reset core to a known state regardless of the chosen ABI. Signed-off-by: Max Filippov --- arch/xtensa/boot/boot-elf/bootstrap.S | 2 ++ arch/xtensa/boot/boot-redboot/bootstrap.S | 4 ++-- 2 files changed, 4 insertions(+), 2 deletions(-) (limited to 'arch/xtensa/boot') diff --git a/arch/xtensa/boot/boot-elf/bootstrap.S b/arch/xtensa/boot/boot-elf/bootstrap.S index 99e98c9bae41..2dd28931d699 100644 --- a/arch/xtensa/boot/boot-elf/bootstrap.S +++ b/arch/xtensa/boot/boot-elf/bootstrap.S @@ -42,12 +42,14 @@ _bootparam: .align 4 _SetupMMU: +#if XCHAL_HAVE_WINDOWED movi a0, 0 wsr a0, windowbase rsync movi a0, 1 wsr a0, windowstart rsync +#endif movi a0, 0x1F wsr a0, ps rsync diff --git a/arch/xtensa/boot/boot-redboot/bootstrap.S b/arch/xtensa/boot/boot-redboot/bootstrap.S index 51e8f3b88e82..3ed94ad35000 100644 --- a/arch/xtensa/boot/boot-redboot/bootstrap.S +++ b/arch/xtensa/boot/boot-redboot/bootstrap.S @@ -56,13 +56,13 @@ _start: movi a4, 1 wsr a4, ps rsync - +#if XCHAL_HAVE_WINDOWED rsr a5, windowbase ssl a5 sll a4, a4 wsr a4, windowstart rsync - +#endif movi a4, KERNEL_PS_WOE_MASK wsr a4, ps rsync -- cgit v1.2.3