This is important to have entry point in the beginning of .text section because it allows simple loading and execution of U-Boot.
For example pre-bootloader loads U-Boot in memory starting from offset 0x81000000 and then just jumps to the same address.
Otherwise pre-bootloader would need to find-out where entry-point is. In its turn if it deals with binary image of U-Boot there's no way for pre-bootloader to get required value.
Signed-off-by: Alexey Brodkin abrodkin@synopsys.com --- arch/arc/cpu/u-boot.lds | 1 + arch/arc/lib/Makefile | 2 +- 2 files changed, 2 insertions(+), 1 deletion(-)
diff --git a/arch/arc/cpu/u-boot.lds b/arch/arc/cpu/u-boot.lds index ccddbf7..693df74 100644 --- a/arch/arc/cpu/u-boot.lds +++ b/arch/arc/cpu/u-boot.lds @@ -13,6 +13,7 @@ SECTIONS .text : { *(.__text_start) *(.__image_copy_start) + arch/arc/lib/start.o (.text*) *(.text*) }
diff --git a/arch/arc/lib/Makefile b/arch/arc/lib/Makefile index b887904..459bba9 100644 --- a/arch/arc/lib/Makefile +++ b/arch/arc/lib/Makefile @@ -4,6 +4,7 @@ # SPDX-License-Identifier: GPL-2.0+ #
+head-y := start.o obj-y += cache.o obj-y += cpu.o obj-y += interrupts.o @@ -18,7 +19,6 @@ obj-y += memcpy-700.o obj-y += memset.o obj-y += reset.o obj-y += timer.o -obj-y += start.o obj-y += ints_low.o obj-y += init_helpers.o