Merge changes from topic "fix-lto-build-all" into integration

* changes:
  build(fpga): correctly handle gcc as linker for LTO
  fix(build): enforce single partition for LTO build
  fix(rockchip): add support for building with LTO enabled

Makefile

@@ -325,6 +325,7 @@ else ifeq ($($(ARCH)-ld-id),gnu-gcc)
 	ifeq ($(ENABLE_LTO),1)
 		ifeq (${ARCH},aarch64)
 			TF_LDFLAGS	+=	-flto -fuse-linker-plugin
+			TF_LDFLAGS      +=	-flto-partition=one
 		endif
 	endif #(ENABLE_LTO)
 

plat/arm/board/arm_fpga/platform.mk

@@ -127,8 +127,14 @@ $(eval $(call MAKE_S,$(BUILD_PLAT),plat/arm/board/arm_fpga/rom_trampoline.S,bl31
 $(eval $(call MAKE_S,$(BUILD_PLAT),plat/arm/board/arm_fpga/kernel_trampoline.S,bl31))
 $(eval $(call MAKE_LD,$(BUILD_PLAT)/build_axf.ld,plat/arm/board/arm_fpga/build_axf.ld.S,bl31))
 
+ifeq ($($(ARCH)-ld-id),gnu-gcc)
+        PLAT_LDFLAGS	+=	-Wl,--strip-debug
+else
+        PLAT_LDFLAGS	+=	--strip-debug
+endif
+
 bl31.axf: bl31 dtbs ${BUILD_PLAT}/rom_trampoline.o ${BUILD_PLAT}/kernel_trampoline.o ${BUILD_PLAT}/build_axf.ld
 	$(ECHO) "  LD      $@"
-	$(Q)$($(ARCH)-ld) -T ${BUILD_PLAT}/build_axf.ld -L ${BUILD_PLAT} --strip-debug -s -n -o ${BUILD_PLAT}/bl31.axf
+	$(Q)$($(ARCH)-ld) -T ${BUILD_PLAT}/build_axf.ld -L ${BUILD_PLAT} $(TF_LDFLAGS) $(PLAT_LDFLAGS) -s -n -o ${BUILD_PLAT}/bl31.axf
 
 all: bl31.axf

plat/rockchip/rk3399/drivers/pmu/pmu_fw.S

@@ -0,0 +1,21 @@
+/*
+ * Copyright (c) 2024, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+/* convoluted way to make sure that the define is pasted just the right way */
+.macro INCBIN file sym sec
+	.section \sec
+	.global \sym
+	.type \sym, @object
+	.align 4
+\sym :
+	.incbin \file
+	.size \sym , .-\sym
+	.global \sym\()_end
+\sym\()_end :
+.endm
+
+INCBIN ""RK3399M0FW"", "rk3399m0_bin", ".sram.incbin"
+INCBIN ""RK3399M0PMUFW"", "rk3399m0pmu_bin", ".pmusram.incbin"

plat/rockchip/rk3399/drivers/pmu/pmu_fw.c

@@ -1,22 +0,0 @@
-/*
- * Copyright (c) 2016, ARM Limited and Contributors. All rights reserved.
- *
- * SPDX-License-Identifier: BSD-3-Clause
- */
-
-/* convoluted way to make sure that the define is pasted just the right way */
-#define INCBIN(file, sym, sec) \
-	__asm__( \
-		".section " sec "\n" \
-		".global " sym "\n" \
-		".type " sym ", %object\n" \
-		".align 4\n" \
-		sym ":\n" \
-		".incbin \"" file "\"\n" \
-		".size " sym ", .-" sym "\n" \
-		".global " sym "_end\n" \
-		sym "_end:\n" \
-	)
-
-INCBIN(RK3399M0FW, "rk3399m0_bin", ".sram.incbin");
-INCBIN(RK3399M0PMUFW, "rk3399m0pmu_bin", ".pmusram.incbin");

plat/rockchip/rk3399/platform.mk

@@ -1,5 +1,5 @@
 #
-# Copyright (c) 2016-2020, ARM Limited and Contributors. All rights reserved.
+# Copyright (c) 2016-2024, ARM Limited and Contributors. All rights reserved.
 #
 # SPDX-License-Identifier: BSD-3-Clause
 #
@@ -61,7 +61,7 @@ BL31_SOURCES	+=	${RK_GIC_SOURCES}				\
 			${RK_PLAT_SOC}/plat_sip_calls.c			\
 			${RK_PLAT_SOC}/drivers/gpio/rk3399_gpio.c	\
 			${RK_PLAT_SOC}/drivers/pmu/pmu.c		\
-			${RK_PLAT_SOC}/drivers/pmu/pmu_fw.c		\
+			${RK_PLAT_SOC}/drivers/pmu/pmu_fw.S		\
 			${RK_PLAT_SOC}/drivers/pmu/m0_ctl.c		\
 			${RK_PLAT_SOC}/drivers/pwm/pwm.c		\
 			${RK_PLAT_SOC}/drivers/secure/secure.c		\
@@ -102,7 +102,7 @@ endif
 # CCACHE_EXTRAFILES is needed because ccache doesn't handle .incbin
 export CCACHE_EXTRAFILES
 ${BUILD_PLAT}/bl31/pmu_fw.o: CCACHE_EXTRAFILES=$(RK3399M0FW):$(RK3399M0PMUFW)
-${RK_PLAT_SOC}/drivers/pmu/pmu_fw.c: $(RK3399M0FW)
+${RK_PLAT_SOC}/drivers/pmu/pmu_fw.S: $(RK3399M0FW)
 
 $(eval $(call MAKE_PREREQ_DIR,${BUILD_M0},${BUILD_PLAT}))
 .PHONY: $(RK3399M0FW)