Merge branch '2019-06-07-master-imports'

- Include Heinrich's series to move the i.MX board size check function
  to be more widely available.
- Include Simon Goldschmidt's patch to make it possible to have a more
  accurate SPL size check applied.

Makefile

@@ -337,6 +337,19 @@ endif
 #  KBUILD_MODULES := 1
 #endif
 
+define size_check
+	actual=$$( wc -c $1 | awk '{print $$1}'); \
+	limit=$$( printf "%d" $2 ); \
+	if test $$actual -gt $$limit; then \
+		echo "$1 exceeds file size limit:" >&2; \
+		echo "  limit:  $$limit bytes" >&2; \
+		echo "  actual: $$actual bytes" >&2; \
+		echo "  excess: $$((actual - limit)) bytes" >&2; \
+		exit 1; \
+	fi
+endef
+export size_check
+
 export KBUILD_MODULES KBUILD_BUILTIN
 export KBUILD_CHECKSRC KBUILD_SRC KBUILD_EXTMOD
 
@@ -778,20 +791,17 @@ LDPPFLAGS += \
 #########################################################################
 
 ifneq ($(CONFIG_BOARD_SIZE_LIMIT),)
-BOARD_SIZE_CHECK = \
+BOARD_SIZE_CHECK= @ $(call size_check,$@,$(CONFIG_BOARD_SIZE_LIMIT))
-	@actual=`wc -c $@ | awk '{print $$1}'`; \
-	limit=`printf "%d" $(CONFIG_BOARD_SIZE_LIMIT)`; \
-	if test $$actual -gt $$limit; then \
-		echo "$@ exceeds file size limit:" >&2 ; \
-		echo "  limit:  $$limit bytes" >&2 ; \
-		echo "  actual: $$actual bytes" >&2 ; \
-		echo "  excess: $$((actual - limit)) bytes" >&2; \
-		exit 1; \
-	fi
 else
 BOARD_SIZE_CHECK =
 endif
 
+ifneq ($(CONFIG_SPL_SIZE_LIMIT),0)
+SPL_SIZE_CHECK = @$(call size_check,$@,$$(tools/spl_size_limit))
+else
+SPL_SIZE_CHECK =
+endif
+
 # Statically apply RELA-style relocations (currently arm64 only)
 # This is useful for arm64 where static relocation needs to be performed on
 # the raw binary, but certain simulators only accept an ELF file (but don't
@@ -1090,6 +1100,7 @@ endif
 
 %.imx: %.bin
 	$(Q)$(MAKE) $(build)=arch/arm/mach-imx $@
+	$(BOARD_SIZE_CHECK)
 
 %.vyb: %.imx
 	$(Q)$(MAKE) $(build)=arch/arm/cpu/armv7/vf610 $@
@@ -1707,6 +1718,8 @@ u-boot.lds: $(LDSCRIPT) prepare FORCE
 
 spl/u-boot-spl.bin: spl/u-boot-spl
 	@:
+	$(SPL_SIZE_CHECK)
+
 spl/u-boot-spl: tools prepare \
 		$(if $(CONFIG_OF_SEPARATE)$(CONFIG_OF_EMBED)$(CONFIG_SPL_OF_PLATDATA),dts/dt.dtb) \
 		$(if $(CONFIG_OF_SEPARATE)$(CONFIG_OF_EMBED)$(CONFIG_TPL_OF_PLATDATA),dts/dt.dtb)
@@ -1769,6 +1782,7 @@ checkarmreloc: u-boot
 envtools: scripts_basic $(version_h) $(timestamp_h)
 	$(Q)$(MAKE) $(build)=tools/env
 
+tools-only: export TOOLS_ONLY=y
 tools-only: scripts_basic $(version_h) $(timestamp_h)
 	$(Q)$(MAKE) $(build)=tools
 

arch/arm/mach-imx/Makefile

@@ -61,21 +61,6 @@ obj-$(CONFIG_CMD_HDMIDETECT) += cmd_hdmidet.o
 obj-$(CONFIG_CMD_DEKBLOB) += cmd_dek.o
 endif
 
-ifneq ($(CONFIG_BOARD_SIZE_LIMIT),)
-BOARD_SIZE_CHECK = \
-        @actual=`wc -c $@ | awk '{print $$1}'`; \
-        limit=`printf "%d" $(CONFIG_BOARD_SIZE_LIMIT)`; \
-        if test $$actual -gt $$limit; then \
-                echo "$@ exceeds file size limit:" >&2 ; \
-                echo "  limit:  $$limit bytes" >&2 ; \
-                echo "  actual: $$actual bytes" >&2 ; \
-                echo "  excess: $$((actual - limit)) bytes" >&2; \
-                exit 1; \
-        fi
-else
-BOARD_SIZE_CHECK =
-endif
-
 PLUGIN = board/$(BOARDDIR)/plugin
 
 ifeq ($(CONFIG_USE_IMXIMG_PLUGIN),y)
@@ -124,7 +109,6 @@ u-boot.imx: MKIMAGEOUTPUT = u-boot.imx.log
 
 u-boot.imx: u-boot.bin u-boot.cfgout $(PLUGIN).bin FORCE
 	$(call if_changed,mkimage)
-	$(BOARD_SIZE_CHECK)
 
 ifeq ($(CONFIG_OF_SEPARATE),y)
 MKIMAGEFLAGS_u-boot-dtb.imx = -n $(filter-out $(PLUGIN).bin $< $(PHONY),$^) \

common/spl/Kconfig

@@ -25,6 +25,42 @@ config SPL_FRAMEWORK
 	  supports MMC, NAND and YMODEM and other methods loading of U-Boot
 	  and the Linux Kernel.  If unsure, say Y.
 
+config SPL_SIZE_LIMIT
+	hex "Maximum size of SPL image"
+	depends on SPL
+	default 0
+	help
+	  Specifies the maximum length of the U-Boot SPL image.
+	  If this value is zero, it is ignored.
+
+config SPL_SIZE_LIMIT_SUBTRACT_GD
+	bool "SPL image size check: provide space for global data"
+	depends on SPL_SIZE_LIMIT > 0
+	help
+	  If enabled, aligned size of global data is reserved in
+	  SPL_SIZE_LIMIT check to ensure such an image does not overflow SRAM
+	  if SPL_SIZE_LIMIT describes the size of SRAM available for SPL when
+	  pre-reloc global data is put into this SRAM, too.
+
+config SPL_SIZE_LIMIT_SUBTRACT_MALLOC
+	bool "SPL image size check: provide space for malloc() pool before relocation"
+	depends on SPL_SIZE_LIMIT > 0
+	help
+	  If enabled, SPL_SYS_MALLOC_F_LEN is reserved in SPL_SIZE_LIMIT check
+	  to ensure such an image does not overflow SRAM if SPL_SIZE_LIMIT
+	  describes the size of SRAM available for SPL when pre-reloc malloc
+	  pool is put into this SRAM, too.
+
+config SPL_SIZE_LIMIT_PROVIDE_STACK
+	hex "SPL image size check: provide stack space before relocation"
+	depends on SPL_SIZE_LIMIT > 0
+	default 0
+	help
+	  If set, this size is reserved in SPL_SIZE_LIMIT check to ensure such
+	  an image does not overflow SRAM if SPL_SIZE_LIMIT describes the size
+	  of SRAM available for SPL when the stack required before reolcation
+	  uses this SRAM, too.
+
 config HANDOFF
 	bool "Pass hand-off information from SPL to U-Boot proper"
 	depends on BLOBLIST

configs/tinker-rk3288_defconfig

@@ -3,6 +3,7 @@ CONFIG_ARCH_ROCKCHIP=y
 CONFIG_SYS_TEXT_BASE=0x00000000
 CONFIG_SYS_MALLOC_F_LEN=0x2000
 CONFIG_ROCKCHIP_RK3288=y
+CONFIG_SPL_SIZE_LIMIT=30720
 CONFIG_SPL_ROCKCHIP_BACK_TO_BROM=y
 CONFIG_TARGET_TINKER_RK3288=y
 CONFIG_NR_DRAM_BANKS=1

tools/Makefile

@@ -199,6 +199,10 @@ hostprogs-$(CONFIG_RISCV) += prelink-riscv
 hostprogs-y += fdtgrep
 fdtgrep-objs += $(LIBFDT_OBJS) fdtgrep.o
 
+ifneq ($(TOOLS_ONLY),y)
+hostprogs-y += spl_size_limit
+endif
+
 hostprogs-$(CONFIG_MIPS) += mips-relocs
 
 # We build some files with extra pedantic flags to try to minimize things

tools/spl_size_limit.c

@@ -0,0 +1,30 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (c) 2019, Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
+ *
+ * This tool helps to return the size available for SPL image during build
+ */
+
+#include <generated/autoconf.h>
+#include <generated/generic-asm-offsets.h>
+
+int main(int argc, char *argv[])
+{
+	int spl_size_limit = 0;
+
+#ifdef CONFIG_SPL_SIZE_LIMIT
+	spl_size_limit = CONFIG_SPL_SIZE_LIMIT;
+#ifdef CONFIG_SPL_SIZE_LIMIT_SUBTRACT_GD
+	spl_size_limit -= GENERATED_GBL_DATA_SIZE;
+#endif
+#ifdef CONFIG_SPL_SIZE_LIMIT_SUBTRACT_MALLOC
+	spl_size_limit -= CONFIG_SPL_SYS_MALLOC_F_LEN;
+#endif
+#ifdef CONFIG_SPL_SIZE_LIMIT_PROVIDE_STACK
+	spl_size_limit -= CONFIG_SPL_SIZE_LIMIT_PROVIDE_STACK;
+#endif
+#endif
+
+	printf("%d", spl_size_limit);
+	return 0;
+}