When fit image boots from ram, the payload will be prepared in the address of SPL_LOAD_FIT_ADDRESS. In spl fit generic flow, it will malloc another memory address and copy whole fit image to this malloc address. But it is un-necessary for booting from RAM.
This patch improves this flow by declare the board_spl_fit_buffer_addr() to replace the original one. The larger image size (eq: Kernel Image 10~20MB), it can save more booting time.
Also enhance memcpy function by checking source and destination address. If they are the same address, just return and don't copy data anymore.
Signed-off-by: Rick Chen rick@andestech.com --- Changes in v2 - Move spl.c to board level instead of arch level --- arch/riscv/cpu/ax25/Makefile | 1 + arch/riscv/cpu/ax25/spl.c | 31 +++++++++++++++++++++++++++++++ arch/riscv/lib/memcpy.S | 2 ++ 3 files changed, 34 insertions(+) create mode 100644 arch/riscv/cpu/ax25/spl.c
diff --git a/arch/riscv/cpu/ax25/Makefile b/arch/riscv/cpu/ax25/Makefile index 318baccb09..f1c21eadd4 100644 --- a/arch/riscv/cpu/ax25/Makefile +++ b/arch/riscv/cpu/ax25/Makefile @@ -5,3 +5,4 @@
obj-y := cpu.o obj-y += cache.o +obj-y += spl.o diff --git a/arch/riscv/cpu/ax25/spl.c b/arch/riscv/cpu/ax25/spl.c new file mode 100644 index 0000000000..6bf357d26d --- /dev/null +++ b/arch/riscv/cpu/ax25/spl.c @@ -0,0 +1,31 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright (C) 2023 Andes Technology Corporation + * Rick Chen, Andes Technology Corporation rick@andestech.com + */ +#include <common.h> +#include <cpu_func.h> +#include <hang.h> +#include <init.h> +#include <log.h> +#include <spl.h> +#include <asm/global_data.h> +#include <asm/system.h> + +DECLARE_GLOBAL_DATA_PTR; + +#if CONFIG_IS_ENABLED(RAM_SUPPORT) +struct legacy_img_hdr *spl_get_load_buffer(ssize_t offset, size_t size) +{ + return (void *)(CONFIG_SPL_LOAD_FIT_ADDRESS + offset); +} + +void *board_spl_fit_buffer_addr(ulong fit_size, int sectors, int bl_len) +{ + void *buf; + + buf = spl_get_load_buffer(0, sectors * bl_len); + + return buf; +} +#endif diff --git a/arch/riscv/lib/memcpy.S b/arch/riscv/lib/memcpy.S index 00672c19ad..9884077c93 100644 --- a/arch/riscv/lib/memcpy.S +++ b/arch/riscv/lib/memcpy.S @@ -9,6 +9,7 @@ /* void *memcpy(void *, const void *, size_t) */ ENTRY(__memcpy) WEAK(memcpy) + beq a0, a1, .copy_end /* Save for return value */ mv t6, a0
@@ -121,6 +122,7 @@ WEAK(memcpy) 2:
mv a0, t6 +.copy_end: ret
.Lmisaligned_word_copy: