diff options
Diffstat (limited to 'src/cpu/allwinner/a10/Makefile.inc')
| -rw-r--r-- | src/cpu/allwinner/a10/Makefile.inc | 15 |
1 files changed, 8 insertions, 7 deletions
diff --git a/src/cpu/allwinner/a10/Makefile.inc b/src/cpu/allwinner/a10/Makefile.inc index 48f3110605..9f7208ae26 100644 --- a/src/cpu/allwinner/a10/Makefile.inc +++ b/src/cpu/allwinner/a10/Makefile.inc @@ -21,15 +21,16 @@ get_bootblock_size= \ sed 's/[^0-9 ]//g')) \ $(shell echo $$(($(word 2, $(strip $(bb_s)))))) -# The boot ROM in the SoC will start loading code if a special boot0 header is +# 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 normally added by the 'mxsunxiboot' tool. The file -# passed to mksunxiboot should only include the bootblock due to size -# limitations. -# FIXME: Figure out how to safely integrate in coreboot.rom. For now, only copy -# the first 15 KiB of coreboot.rom (This will not collide with stack) +# correct. This header is normally added by the 'mxsunxiboot' tool. The boot ROM +# will load at most 24KiB of data to SRAM, so limit the file size accordingly. +# The BOOT0 header takes 32 bytes, so limit our file to 24KiB - 32 bytes. +# FIXME: Figure out how to safely integrate in coreboot.rom. +# FIXME: The file passed to mksunxiboot should only include the bootblock due +# to size limitations. $(obj)/BOOT0: $(obj)/coreboot.rom @printf " BOOT0 $(subst $(obj)/,,$(^))\n" touch $@ - dd if=$^ of=$^.tmp bs=1024 count=15 + dd if=$^ of=$^.tmp bs=24544 count=1 -mksunxiboot $^.tmp $@ |