diff options
Diffstat (limited to 'Makefile')
| -rw-r--r-- | Makefile | 31 |
1 files changed, 31 insertions, 0 deletions
@@ -811,6 +811,10 @@ ifneq ($(CONFIG_BUILD_TARGET),) ALL-y += $(CONFIG_BUILD_TARGET:"%"=%) endif +ifneq ($(CONFIG_SYS_INIT_SP_BSS_OFFSET),) +ALL-y += init_sp_bss_offset_check +endif + LDFLAGS_u-boot += $(LDFLAGS_FINAL) # Avoid 'Not enough room for program headers' error on binutils 2.28 onwards. @@ -939,6 +943,33 @@ binary_size_check: u-boot-nodtb.bin FORCE fi \ fi +ifneq ($(CONFIG_SYS_INIT_SP_BSS_OFFSET),) +ifneq ($(CONFIG_SYS_MALLOC_F_LEN),) +subtract_sys_malloc_f_len = space=$$(($${space} - $(CONFIG_SYS_MALLOC_F_LEN))) +else +subtract_sys_malloc_f_len = true +endif +# The 1/4 margin below is somewhat arbitrary. The likely initial SP usage is +# so low that the DTB could probably use 90%+ of the available space, for +# current values of CONFIG_SYS_INIT_SP_BSS_OFFSET at least. However, let's be +# safe for now and tweak this later if space becomes tight. +# A rejected alternative would be to check that some absolute minimum stack +# space was available. However, since CONFIG_SYS_INIT_SP_BSS_OFFSET is +# deliberately build-specific, to take account of build-to-build stack usage +# differences due to different feature sets, there is no common absolute value +# to check against. +init_sp_bss_offset_check: u-boot.dtb FORCE + @dtb_size=$(shell wc -c u-boot.dtb | awk '{print $$1}') ; \ + space=$(CONFIG_SYS_INIT_SP_BSS_OFFSET) ; \ + $(subtract_sys_malloc_f_len) ; \ + quarter_space=$$(($${space} / 4)) ; \ + if [ $${dtb_size} -gt $${quarter_space} ]; then \ + echo "u-boot.dtb is larger than 1 quarter of " >&2 ; \ + echo "(CONFIG_SYS_INIT_SP_BSS_OFFSET - CONFIG_SYS_MALLOC_F_LEN)" >&2 ; \ + exit 1 ; \ + fi +endif + u-boot-nodtb.bin: u-boot FORCE $(call if_changed,objcopy) $(call DO_STATIC_RELA,$<,$@,$(CONFIG_SYS_TEXT_BASE)) |