Hi,
El 15/04/2017 a las 20:54, Daniel Schwierzeck escribió:
>
>
> Am 15.04.2017 um 20:10 schrieb Álvaro Fernández Rojas:
>> Hi,
>>
>> El 15/04/2017 a las 19:19, Álvaro Fernández Rojas escribió:
>>>
>>>
>>> El 14/04/2017 a las 21:05, Daniel Schwierzeck escribió:
>>>>
>>>>
>>>> Am 13.04.2017 um 17:52 schrieb Álvaro Fernández Rojas:
>>>>> CFE supports loading .elf images instead of raw binaries.
>>>>>
>>>>> Signed-off-by: Álvaro Fernández Rojas <nolt...@gmail.com>
>>>>> ---
>>>>> Makefile | 22 ++++++++++++++++++++++
>>>>> arch/mips/cpu/u-boot-elf.lds | 10 ++++++++++
>>>>> 2 files changed, 32 insertions(+)
>>>>> create mode 100644 arch/mips/cpu/u-boot-elf.lds
>>>>>
>>>>> diff --git a/Makefile b/Makefile
>>>>> index 09b597d..667b5f2 100644
>>>>> --- a/Makefile
>>>>> +++ b/Makefile
>>>>> @@ -568,6 +568,15 @@ ifndef LDSCRIPT
>>>>> endif
>>>>> endif
>>>>>
>>>>> +ifndef LDSCRIPT_ELF
>>>>> + ifeq ($(wildcard $(LDSCRIPT_ELF)),)
>>>>> + LDSCRIPT_ELF := $(srctree)/$(CPUDIR)/u-boot-elf.lds
>>>>> + endif
>>>>> + ifeq ($(wildcard $(LDSCRIPT_ELF)),)
>>>>> + LDSCRIPT_ELF := $(srctree)/arch/$(ARCH)/cpu/u-boot-elf.lds
>>>>> + endif
>>>>> +endif
>>>>
>>>> could you try to build the ELF binary without a custom linker script? I
>>>> think the built-in one should work too.
>>>>
>>>>> +
>>>>> else
>>>>> # Dummy target needed, because used as prerequisite
>>>>> include/config/auto.conf: ;
>>>>> @@ -786,6 +795,7 @@ ifneq ($(CONFIG_SPL_TARGET),)
>>>>> ALL-$(CONFIG_SPL) += $(CONFIG_SPL_TARGET:"%"=%)
>>>>> endif
>>>>> ALL-$(CONFIG_REMAKE_ELF) += u-boot.elf
>>>>> +ALL-$(CONFIG_ARCH_BMIPS) += u-boot-bmips.elf
>>>>> ALL-$(CONFIG_EFI_APP) += u-boot-app.efi
>>>>> ALL-$(CONFIG_EFI_STUB) += u-boot-payload.efi
>>>>>
>>>>> @@ -1192,6 +1202,15 @@ u-boot.elf: u-boot.bin
>>>>> --defsym=_start=$(CONFIG_SYS_TEXT_BASE) \
>>>>> -Ttext=$(CONFIG_SYS_TEXT_BASE)
>>>>>
>>>>> +# Rules to link u-boot-bmips
>>>>> +quiet_cmd_u-boot-bmips ?= LD $@
>>>>> + cmd_u-boot-bmips ?= $(LD) -e startup -T u-boot-elf.lds \
>>>>> + -Ttext $(CONFIG_SYS_TEXT_BASE) -o $@ u-boot-bmips.o
>>>>> +
>>>>> +u-boot-bmips.elf: u-boot.bin u-boot-elf.lds
>>>>> + $(Q)$(LD) -r -b binary --oformat elf32-tradbigmips -o u-boot-bmips.o $<
>>>>> + $(call if_changed,u-boot-bmips)
>>>>
>>>> could you try to generate the ELF binary like in the existing rule
>>>> above? If that works, we could refactor the generic rule to remove the
>>>> hard-coded aarch64 flags. If not, move this code and the
>>>> "ALL-$(CONFIG_ARCH_BMIPS) += u-boot-bmips.elf" to arch/mips/Makefile
>>> Sure, I will try and see if it works.
>> It works, but it has to be changed:
>> u-boot.elf: u-boot.bin
>> @$(OBJCOPY) -B mips -I binary -O elf32-tradbigmips \
>> $< u-boot-elf.o
>> @$(LD) u-boot-elf.o -o $@ \
>> --defsym=__start=$(CONFIG_SYS_TEXT_BASE) \
>> -Ttext=$(CONFIG_SYS_TEXT_BASE)
>> Changes:
>> 1) __start symbol instead of _start
>> 2) mips instead of aarch64
>> 3) elf32-tradbigmips instead of elf64-littleaarch64
>
> 2) and 3) are expected, that's what could be fixed with a small
> refactoring. But why --defsym=__start? The U-Boot entry point is _start.
--defsym=_start throws the following error:
mips-openwrt-linux-ld.bfd: warning: cannot find entry symbol __start;
defaulting to 0000000080010000
However, --defsym=__start throws no errors...
>
>>
>>>
>>>>
>>>> Also don't forget to add new binaries to .gitignore and the Makefile
>>>> clean targets.
>>> Right, my fault :).
>>>
>>>>
>>>>> +
>>>>> # Rule to link u-boot
>>>>> # May be overridden by arch/$(ARCH)/config.mk
>>>>> quiet_cmd_u-boot__ ?= LD $@
>>>>> @@ -1340,6 +1359,9 @@ cmd_cpp_lds = $(CPP) -Wp,-MD,$(depfile)
>>>>> $(cpp_flags) $(LDPPFLAGS) \
>>>>> u-boot.lds: $(LDSCRIPT) prepare FORCE
>>>>> $(call if_changed_dep,cpp_lds)
>>>>>
>>>>> +u-boot-elf.lds: $(LDSCRIPT_ELF) prepare
>>>>> + $(call if_changed_dep,cpp_lds)
>>>>> +
>>>>> spl/u-boot-spl.bin: spl/u-boot-spl
>>>>> @:
>>>>> spl/u-boot-spl: tools prepare \
>>>>> diff --git a/arch/mips/cpu/u-boot-elf.lds b/arch/mips/cpu/u-boot-elf.lds
>>>>> new file mode 100644
>>>>> index 0000000..db0bb46
>>>>> --- /dev/null
>>>>> +++ b/arch/mips/cpu/u-boot-elf.lds
>>>>> @@ -0,0 +1,10 @@
>>>>> +OUTPUT_ARCH(mips)
>>>>> +SECTIONS {
>>>>> + .text : {
>>>>> + startup = .;
>>>>> + *(.text)
>>>>> + *(.text.*)
>>>>> + *(.data)
>>>>> + *(.data.*)
>>>>> + }
>>>>> +}
>>>>>
>>>>
>
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