This series fixes the long-time broken support of standalone programs on MIPS. All MIPS standalone programs now use the main MIPS linker script and all available code size optimizations. Finally the deprecated Makefiles arch/mips/cpu/mips[32,64]/config.mk could be removed.
The series also improves the passing of additional linker flags to standalone programs by introducing a Makefile variable LDFLAGS_STANDALONE. Currently the variable CONFIG_STANDALONE_LOAD_ADDR is misused on some archs to pass the path to the linker script. The variable LDFLAGS_STANDALONE now provides a cleaner way to do that. Furthermore it is now possible to migrate CONFIG_STANDALONE_LOAD_ADDR to Kconfig as a hex symbol.
Sample test session with Malta board in Qemu:
U-Boot 2018.09-00270-g19936da8bc (Sep 23 2018 - 18:43:17 +0200)
Board: MIPS Malta CoreLV DRAM: 256 MiB Flash: 4 MiB *** Warning - bad CRC, using default environment
In: serial@3f8 Out: serial@3f8 Err: serial@3f8 Net: pcnet#0 IDE: Bus 0: not available malta # malta # malta # dhcp 80200000 hello_world.bin BOOTP broadcast 1 DHCP client bound to address 10.0.2.15 (3 ms) Using pcnet#0 device TFTP from server 10.0.2.2; our IP address is 10.0.2.15 Filename 'hello_world.bin'. Load address: 0x80200000 Loading: ### 32.2 MiB/s done Bytes transferred = 33784 (83f8 hex) malta # go 80200000 Example expects ABI version 9 Actual U-Boot ABI version 9 Hello World argc = 1 argv[0] = "80200000" argv[1] = "<NULL>" Hit any key to exit ...
malta # go 80200000 666 Example expects ABI version 9 Actual U-Boot ABI version 9 Hello World argc = 2 argv[0] = "80200000" argv[1] = "666" argv[2] = "<NULL>" Hit any key to exit ...
Daniel Schwierzeck (3): Kbuild: add LDFLAGS_STANDALONE Kbuild: standalone: do not ignore platform-specific OBJCOPYFLAGS MIPS: fix linking of standalone programs
arch/mips/config.mk | 5 ++++ arch/mips/cpu/mips32/config.mk | 7 ------ arch/mips/cpu/mips64/config.mk | 7 ------ arch/nds32/config.mk | 4 ++-- arch/riscv/config.mk | 4 ++-- arch/sh/config.mk | 2 +- config.mk | 2 ++ examples/standalone/Makefile | 8 ++++--- examples/standalone/mips.lds | 42 ---------------------------------- examples/standalone/mips64.lds | 42 ---------------------------------- 10 files changed, 17 insertions(+), 106 deletions(-) delete mode 100644 arch/mips/cpu/mips32/config.mk delete mode 100644 arch/mips/cpu/mips64/config.mk delete mode 100644 examples/standalone/mips.lds delete mode 100644 examples/standalone/mips64.lds