bootblock-y += bootblock.c bootblock-y += bootblock_media.c bootblock-y += clock.c bootblock-y += gpio.c bootblock-y += pinmux.c bootblock-y += raminit.c bootblock-y += timer.c romstage-y += bootblock_media.c romstage-y += cbmem.c romstage-y += clock.c romstage-y += pinmux.c romstage-y += timer.c romstage-y += twi.c ramstage-y += bootblock_media.c ramstage-y += cbmem.c ramstage-y += clock.c ramstage-y += cpu.c ramstage-y += monotonic_timer.c ramstage-y += timer.c ramstage-y += twi.c bootblock-y += uart.c uart_console.c romstage-y += uart.c uart_console.c ramstage-y += uart.c uart_console.c real-target: $(obj)/BOOT0 get_bootblock_size= \ $(eval bb_s=$(shell $(CBFSTOOL) $(1) print | grep bootblocksize | \ sed 's/[^0-9 ]//g')) \ $(shell echo $$(($(word 2, $(strip $(bb_s)))))) # This tool is used to prepend a header to coreboot.rom to trick the SoC into # loading out bootblock # MKSUNXIBOOT:=$(objutil)/mksunxiboot $(MKSUNXIBOOT): $(top)/util/arm_boot_tools/mksunxiboot/mksunxiboot.c @printf " HOSTCC $(subst $(obj)/,,$(@))\n" $(HOSTCC) $(HOSTCFLAGS) -o $@ $< # The boot ROM in the SoC will start loading code if a special BOOT0 header is # found (at an offset of 8KiB in either NAND or SD), and the checksum is # correct. This header is added by the 'mxsunxiboot' tool, which is provided # under util/arm_boot_tools/mksunxiboot. The boot ROM will load at most 24KiB of # data to SRAM. The BOOT0 header takes 32 bytes, so bootblock is limited to # 24KiB - 32 bytes. # TODO: make mksunxiboot take the bootblock size as a parameter # TODO: print an error if bootblock is too large (maybe place ROMSTAGE at the # exact offset needed to collide with the bootblock) # FIXME: A10 loads 24KiB. According to Oliver other chips load a little more # $(obj)/BOOT0: $(obj)/coreboot.rom $(MKSUNXIBOOT) @printf " BOOT0 $(subst $(obj)/,,$(^))\n" $(MKSUNXIBOOT) $(word 1, $^) $@