From: Masahiro Yamada <masahi...@kernel.org> commit 63b903dfebdea92aa92ad337d8451a6fbfeabf9d upstream.
As far as I understood from the Kconfig help text, this build rule is used to rebuild the driver firmware, which runs on an old m68k-based chip. So, you need m68k tools for the firmware rebuild. wanxl.c is a PCI driver, but CONFIG_M68K does not select CONFIG_HAVE_PCI. So, you cannot enable CONFIG_WANXL_BUILD_FIRMWARE for ARCH=m68k. In other words, ifeq ($(ARCH),m68k) is false here. I am keeping the dead code for now, but rebuilding the firmware requires 'as68k' and 'ld68k', which I do not have in hand. Instead, the kernel.org m68k GCC [1] successfully built it. Allowing a user to pass in CROSS_COMPILE_M68K= is handier. [1] https://mirrors.edge.kernel.org/pub/tools/crosstool/files/bin/x86_64/9.2.0/x86_64-gcc-9.2.0-nolibc-m68k-linux.tar.xz Suggested-by: Geert Uytterhoeven <ge...@linux-m68k.org> Signed-off-by: Masahiro Yamada <masahi...@kernel.org> Signed-off-by: Nick Desaulniers <ndesaulni...@google.com> Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org> --- drivers/net/wan/Kconfig | 2 +- drivers/net/wan/Makefile | 12 ++++++------ 2 files changed, 7 insertions(+), 7 deletions(-) --- a/drivers/net/wan/Kconfig +++ b/drivers/net/wan/Kconfig @@ -199,7 +199,7 @@ config WANXL_BUILD_FIRMWARE depends on WANXL && !PREVENT_FIRMWARE_BUILD help Allows you to rebuild firmware run by the QUICC processor. - It requires as68k, ld68k and hexdump programs. + It requires m68k toolchains and hexdump programs. You should never need this option, say N. --- a/drivers/net/wan/Makefile +++ b/drivers/net/wan/Makefile @@ -41,17 +41,17 @@ $(obj)/wanxl.o: $(obj)/wanxlfw.inc ifeq ($(CONFIG_WANXL_BUILD_FIRMWARE),y) ifeq ($(ARCH),m68k) - AS68K = $(AS) - LD68K = $(LD) + M68KAS = $(AS) + M68KLD = $(LD) else - AS68K = as68k - LD68K = ld68k + M68KAS = $(CROSS_COMPILE_M68K)as + M68KLD = $(CROSS_COMPILE_M68K)ld endif quiet_cmd_build_wanxlfw = BLD FW $@ cmd_build_wanxlfw = \ - $(CPP) -D__ASSEMBLY__ -Wp,-MD,$(depfile) -I$(srctree)/include/uapi $< | $(AS68K) -m68360 -o $(obj)/wanxlfw.o; \ - $(LD68K) --oformat binary -Ttext 0x1000 $(obj)/wanxlfw.o -o $(obj)/wanxlfw.bin; \ + $(CPP) -D__ASSEMBLY__ -Wp,-MD,$(depfile) -I$(srctree)/include/uapi $< | $(M68KAS) -m68360 -o $(obj)/wanxlfw.o; \ + $(M68KLD) --oformat binary -Ttext 0x1000 $(obj)/wanxlfw.o -o $(obj)/wanxlfw.bin; \ hexdump -ve '"\n" 16/1 "0x%02X,"' $(obj)/wanxlfw.bin | sed 's/0x ,//g;1s/^/static const u8 firmware[]={/;$$s/,$$/\n};\n/' >$(obj)/wanxlfw.inc; \ rm -f $(obj)/wanxlfw.bin $(obj)/wanxlfw.o
