This patch adds a MIPS specific jump_to_image_no_args() implementation, which flushes the U-Boot proper image loaded from the boot device in SPL before jumping to it.
It has been noticed on MT76x8, that this cache flush is needed. Other MIPS platforms might need it as well.
Signed-off-by: Stefan Roese sr@denx.de Cc: Weijie Gao weijie.gao@mediatek.com Cc: Daniel Schwierzeck daniel.schwierzeck@gmail.com Cc: Simon Goldschmidt simon.k.r.goldschmidt@gmail.com --- Changes in v7: - Moved to MIPS specific file as suggested by Daniel
Changes in v6: - New patch
arch/mips/lib/Makefile | 1 + arch/mips/lib/spl.c | 21 +++++++++++++++++++++ 2 files changed, 22 insertions(+) create mode 100644 arch/mips/lib/spl.c
diff --git a/arch/mips/lib/Makefile b/arch/mips/lib/Makefile index 24a72d9c97..9ee1fcb5c7 100644 --- a/arch/mips/lib/Makefile +++ b/arch/mips/lib/Makefile @@ -12,5 +12,6 @@ obj-y += traps.o
obj-$(CONFIG_CMD_BOOTM) += bootm.o obj-$(CONFIG_CMD_GO) += boot.o +obj-$(CONFIG_SPL_BUILD) += spl.o
lib-$(CONFIG_USE_PRIVATE_LIBGCC) += ashldi3.o ashrdi3.o lshrdi3.o diff --git a/arch/mips/lib/spl.c b/arch/mips/lib/spl.c new file mode 100644 index 0000000000..7ba3e53f6d --- /dev/null +++ b/arch/mips/lib/spl.c @@ -0,0 +1,21 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright (C) 2020 Stefan Roese sr@denx.de + */ + +#include <common.h> +#include <cpu_func.h> +#include <spl.h> + +void __noreturn jump_to_image_no_args(struct spl_image_info *spl_image) +{ + typedef void __noreturn (*image_entry_noargs_t)(void); + image_entry_noargs_t image_entry = + (image_entry_noargs_t)spl_image->entry_point; + + /* Flush cache before jumping to application */ + flush_cache((unsigned long)spl_image->load_addr, spl_image->size); + + debug("image entry point: 0x%lx\n", spl_image->entry_point); + image_entry(); +}