arm: keep all sections in ELF file

Current LDS files /DISCARD/ a lot of sections when linking ELF
files, causing diagnostic tools such as readelf or objdump to
produce partial output. Keep all section at link stage, filter
only at objcopy time so that .bin remains minimal.

Signed-off-by: Albert ARIBAUD <albert.u.boot@aribaud.net>
Reviewed-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com>

14 files changed, 113 insertions, 83 deletions

diff --git a/Makefile b/Makefile
index 1f499c5ec8..af0ad5744e 100644
--- a/Makefile
+++ b/Makefile
@@ -393,7 +393,7 @@ $(obj)u-boot.hex:	$(obj)u-boot
 		$(OBJCOPY) ${OBJCFLAGS} -O ihex $< $@
 
 $(obj)u-boot.srec:	$(obj)u-boot
-		$(OBJCOPY) -O srec $< $@
+		$(OBJCOPY) ${OBJCFLAGS} -O srec $< $@
 
 $(obj)u-boot.bin:	$(obj)u-boot
 		$(OBJCOPY) ${OBJCFLAGS} -O binary $< $@
diff --git a/arch/arm/config.mk b/arch/arm/config.mk
index bdabcf407e..fd3e5fb661 100644
--- a/arch/arm/config.mk
+++ b/arch/arm/config.mk
@@ -103,3 +103,6 @@ ALL-y += checkarmreloc
 # such usage by requiring word relocations.
 PLATFORM_CPPFLAGS += $(call cc-option, -mword-relocations)
 endif
+
+# limit ourselves to the sections we want in the .bin.
+OBJCFLAGS += -j .text -j .rodata -j .data -j .u_boot_list -j .rel.dyn
diff --git a/arch/arm/cpu/arm926ejs/mxs/u-boot-spl.lds b/arch/arm/cpu/arm926ejs/mxs/u-boot-spl.lds
index 40bcc3132f..80fb9bdc8d 100644
--- a/arch/arm/cpu/arm926ejs/mxs/u-boot-spl.lds
+++ b/arch/arm/cpu/arm926ejs/mxs/u-boot-spl.lds
@@ -51,11 +51,13 @@ SECTIONS
 
 	_end = .;
 
-	/DISCARD/ : { *(.dynstr*) }
-	/DISCARD/ : { *(.dynsym*) }
-	/DISCARD/ : { *(.dynamic*) }
-	/DISCARD/ : { *(.hash*) }
-	/DISCARD/ : { *(.plt*) }
-	/DISCARD/ : { *(.interp*) }
-	/DISCARD/ : { *(.gnu*) }
+	.dynsym _end : { *(.dynsym) }
+	.dynbss : { *(.dynbss) }
+	.dynstr : { *(.dynstr*) }
+	.dynamic : { *(.dynamic*) }
+	.hash : { *(.hash*) }
+	.plt : { *(.plt*) }
+	.interp : { *(.interp*) }
+	.gnu : { *(.gnu*) }
+	.ARM.exidx : { *(.ARM.exidx*) }
 }
diff --git a/arch/arm/cpu/arm926ejs/spear/u-boot-spl.lds b/arch/arm/cpu/arm926ejs/spear/u-boot-spl.lds
index 4927736b9b..76b499d87f 100644
--- a/arch/arm/cpu/arm926ejs/spear/u-boot-spl.lds
+++ b/arch/arm/cpu/arm926ejs/spear/u-boot-spl.lds
@@ -51,11 +51,13 @@ SECTIONS
 
 	_end = .;
 
-	/DISCARD/ : { *(.dynstr*) }
-	/DISCARD/ : { *(.dynsym*) }
-	/DISCARD/ : { *(.dynamic*) }
-	/DISCARD/ : { *(.hash*) }
-	/DISCARD/ : { *(.plt*) }
-	/DISCARD/ : { *(.interp*) }
-	/DISCARD/ : { *(.gnu*) }
+	.dynsym _end : { *(.dynsym) }
+	.dynbss : { *(.dynbss) }
+	.dynstr : { *(.dynstr*) }
+	.dynamic : { *(.dynamic*) }
+	.hash : { *(.hash*) }
+	.plt : { *(.plt*) }
+	.interp : { *(.interp*) }
+	.gnu : { *(.gnu*) }
+	.ARM.exidx : { *(.ARM.exidx*) }
 }
diff --git a/arch/arm/cpu/ixp/u-boot.lds b/arch/arm/cpu/ixp/u-boot.lds
index c8d2e126ae..676ae2c4f9 100644
--- a/arch/arm/cpu/ixp/u-boot.lds
+++ b/arch/arm/cpu/ixp/u-boot.lds
@@ -79,10 +79,13 @@ SECTIONS
 		KEEP(*(.__bss_end));
 	}
 
-	/DISCARD/ : { *(.dynsym) }
-	/DISCARD/ : { *(.dynstr*) }
-	/DISCARD/ : { *(.dynamic*) }
-	/DISCARD/ : { *(.plt*) }
-	/DISCARD/ : { *(.interp*) }
-	/DISCARD/ : { *(.gnu*) }
+	.dynsym _end : { *(.dynsym) }
+	.dynbss : { *(.dynbss) }
+	.dynstr : { *(.dynstr*) }
+	.dynamic : { *(.dynamic*) }
+	.hash : { *(.hash*) }
+	.plt : { *(.plt*) }
+	.interp : { *(.interp*) }
+	.gnu : { *(.gnu*) }
+	.ARM.exidx : { *(.ARM.exidx*) }
 }
diff --git a/arch/arm/cpu/u-boot-spl.lds b/arch/arm/cpu/u-boot-spl.lds
index 36cc54a292..4880d0f78a 100644
--- a/arch/arm/cpu/u-boot-spl.lds
+++ b/arch/arm/cpu/u-boot-spl.lds
@@ -51,12 +51,15 @@ SECTIONS
 		__bss_end = .;
 	}
 
-	/DISCARD/ : { *(.dynsym) }
-	/DISCARD/ : { *(.dynstr*) }
-	/DISCARD/ : { *(.dynamic*) }
-	/DISCARD/ : { *(.plt*) }
-	/DISCARD/ : { *(.interp*) }
-	/DISCARD/ : { *(.gnu*) }
+	.dynsym _end : { *(.dynsym) }
+	.dynbss : { *(.dynbss) }
+	.dynstr : { *(.dynstr*) }
+	.dynamic : { *(.dynamic*) }
+	.hash : { *(.hash*) }
+	.plt : { *(.plt*) }
+	.interp : { *(.interp*) }
+	.gnu : { *(.gnu*) }
+	.ARM.exidx : { *(.ARM.exidx*) }
 }
 
 #if defined(CONFIG_SPL_MAX_SIZE)
diff --git a/arch/arm/cpu/u-boot.lds b/arch/arm/cpu/u-boot.lds
index 23bf030655..9463a33dcb 100644
--- a/arch/arm/cpu/u-boot.lds
+++ b/arch/arm/cpu/u-boot.lds
@@ -91,12 +91,14 @@ SECTIONS
 		KEEP(*(.__bss_end));
 	}
 
-	/DISCARD/ : { *(.dynsym) }
-	/DISCARD/ : { *(.dynstr*) }
-	/DISCARD/ : { *(.dynamic*) }
-	/DISCARD/ : { *(.plt*) }
-	/DISCARD/ : { *(.interp*) }
-	/DISCARD/ : { *(.gnu*) }
-	/DISCARD/ : { *(.ARM.exidx*) }
-	/DISCARD/ : { *(.gnu.linkonce.armexidx.*) }
+	.dynsym _end : { *(.dynsym) }
+	.hash : { *(.hash) }
+	.got.plt : { *(.got.plt) }
+	.dynbss : { *(.dynbss) }
+	.dynstr : { *(.dynstr*) }
+	.dynamic : { *(.dynamic*) }
+	.plt : { *(.plt*) }
+	.interp : { *(.interp*) }
+	.gnu : { *(.gnu*) }
+	.ARM.exidx : { *(.ARM.exidx*) }
 }
diff --git a/board/actux1/u-boot.lds b/board/actux1/u-boot.lds
index a656fa99d1..12e018f316 100644
--- a/board/actux1/u-boot.lds
+++ b/board/actux1/u-boot.lds
@@ -87,10 +87,13 @@ SECTIONS
 		KEEP(*(.__bss_end));
 	}
 
-	/DISCARD/ : { *(.dynsym) }
-	/DISCARD/ : { *(.dynstr*) }
-	/DISCARD/ : { *(.dynamic*) }
-	/DISCARD/ : { *(.plt*) }
-	/DISCARD/ : { *(.interp*) }
-	/DISCARD/ : { *(.gnu*) }
+	.dynsym _end : { *(.dynsym) }
+	.dynbss : { *(.dynbss) }
+	.dynstr : { *(.dynstr*) }
+	.dynamic : { *(.dynamic*) }
+	.hash : { *(.hash*) }
+	.plt : { *(.plt*) }
+	.interp : { *(.interp*) }
+	.gnu : { *(.gnu*) }
+	.ARM.exidx : { *(.ARM.exidx*) }
 }
diff --git a/board/actux2/u-boot.lds b/board/actux2/u-boot.lds
index 7a1717640a..300273bf7a 100644
--- a/board/actux2/u-boot.lds
+++ b/board/actux2/u-boot.lds
@@ -87,10 +87,13 @@ SECTIONS
 		KEEP(*(.__bss_end));
 	}
 
-	/DISCARD/ : { *(.dynsym) }
-	/DISCARD/ : { *(.dynstr*) }
-	/DISCARD/ : { *(.dynamic*) }
-	/DISCARD/ : { *(.plt*) }
-	/DISCARD/ : { *(.interp*) }
-	/DISCARD/ : { *(.gnu*) }
+	.dynsym _end : { *(.dynsym) }
+	.dynbss : { *(.dynbss) }
+	.dynstr : { *(.dynstr*) }
+	.dynamic : { *(.dynamic*) }
+	.hash : { *(.hash*) }
+	.plt : { *(.plt*) }
+	.interp : { *(.interp*) }
+	.gnu : { *(.gnu*) }
+	.ARM.exidx : { *(.ARM.exidx*) }
 }
diff --git a/board/actux3/u-boot.lds b/board/actux3/u-boot.lds
index aadfdd2f57..9c97c533dc 100644
--- a/board/actux3/u-boot.lds
+++ b/board/actux3/u-boot.lds
@@ -87,10 +87,13 @@ SECTIONS
 		KEEP(*(.__bss_end));
 	}
 
-	/DISCARD/ : { *(.dynsym) }
-	/DISCARD/ : { *(.dynstr*) }
-	/DISCARD/ : { *(.dynamic*) }
-	/DISCARD/ : { *(.plt*) }
-	/DISCARD/ : { *(.interp*) }
-	/DISCARD/ : { *(.gnu*) }
+	.dynsym _end : { *(.dynsym) }
+	.dynbss : { *(.dynbss) }
+	.dynstr : { *(.dynstr*) }
+	.dynamic : { *(.dynamic*) }
+	.hash : { *(.hash*) }
+	.plt : { *(.plt*) }
+	.interp : { *(.interp*) }
+	.gnu : { *(.gnu*) }
+	.ARM.exidx : { *(.ARM.exidx*) }
 }
diff --git a/board/dvlhost/u-boot.lds b/board/dvlhost/u-boot.lds
index 40c9c8038b..057d94b62a 100644
--- a/board/dvlhost/u-boot.lds
+++ b/board/dvlhost/u-boot.lds
@@ -87,10 +87,13 @@ SECTIONS
 		KEEP(*(.__bss_end));
 	}
 
-	/DISCARD/ : { *(.dynsym) }
-	/DISCARD/ : { *(.dynstr*) }
-	/DISCARD/ : { *(.dynamic*) }
-	/DISCARD/ : { *(.plt*) }
-	/DISCARD/ : { *(.interp*) }
-	/DISCARD/ : { *(.gnu*) }
+	.dynsym _end : { *(.dynsym) }
+	.dynbss : { *(.dynbss) }
+	.dynstr : { *(.dynstr*) }
+	.dynamic : { *(.dynamic*) }
+	.hash : { *(.hash*) }
+	.plt : { *(.plt*) }
+	.interp : { *(.interp*) }
+	.gnu : { *(.gnu*) }
+	.ARM.exidx : { *(.ARM.exidx*) }
 }
diff --git a/board/freescale/mx31ads/u-boot.lds b/board/freescale/mx31ads/u-boot.lds
index 3acc4ca548..6cfca2dab6 100644
--- a/board/freescale/mx31ads/u-boot.lds
+++ b/board/freescale/mx31ads/u-boot.lds
@@ -90,13 +90,13 @@ SECTIONS
 		KEEP(*(.__bss_end));
 	}
 
-	/DISCARD/ : { *(.bss*) }
-	/DISCARD/ : { *(.dynsym) }
-	/DISCARD/ : { *(.dynstr*) }
-	/DISCARD/ : { *(.dynsym*) }
-	/DISCARD/ : { *(.dynamic*) }
-	/DISCARD/ : { *(.hash*) }
-	/DISCARD/ : { *(.plt*) }
-	/DISCARD/ : { *(.interp*) }
-	/DISCARD/ : { *(.gnu*) }
+	.dynsym _end : { *(.dynsym) }
+	.dynbss : { *(.dynbss) }
+	.dynstr : { *(.dynstr*) }
+	.dynamic : { *(.dynamic*) }
+	.hash : { *(.hash*) }
+	.plt : { *(.plt*) }
+	.interp : { *(.interp*) }
+	.gnu : { *(.gnu*) }
+	.ARM.exidx : { *(.ARM.exidx*) }
 }
diff --git a/board/ti/am335x/u-boot.lds b/board/ti/am335x/u-boot.lds
index a173f620ef..9f96a43898 100644
--- a/board/ti/am335x/u-boot.lds
+++ b/board/ti/am335x/u-boot.lds
@@ -108,10 +108,13 @@ SECTIONS
 		KEEP(*(.__bss_end));
 	}
 
-	/DISCARD/ : { *(.dynsym) }
-	/DISCARD/ : { *(.dynstr*) }
-	/DISCARD/ : { *(.dynamic*) }
-	/DISCARD/ : { *(.plt*) }
-	/DISCARD/ : { *(.interp*) }
-	/DISCARD/ : { *(.gnu*) }
+	.dynsym _end : { *(.dynsym) }
+	.dynbss : { *(.dynbss) }
+	.dynstr : { *(.dynstr*) }
+	.dynamic : { *(.dynamic*) }
+	.hash : { *(.hash*) }
+	.plt : { *(.plt*) }
+	.interp : { *(.interp*) }
+	.gnu : { *(.gnu*) }
+	.ARM.exidx : { *(.ARM.exidx*) }
 }
diff --git a/board/vpac270/u-boot-spl.lds b/board/vpac270/u-boot-spl.lds
index 7eac4975ba..08c78b3dbb 100644
--- a/board/vpac270/u-boot-spl.lds
+++ b/board/vpac270/u-boot-spl.lds
@@ -62,13 +62,13 @@ SECTIONS
 		__bss_end = .;
 	}
 
-	/DISCARD/ : { *(.bss*) }
-	/DISCARD/ : { *(.dynsym) }
-	/DISCARD/ : { *(.dynstr*) }
-	/DISCARD/ : { *(.dynsym*) }
-	/DISCARD/ : { *(.dynamic*) }
-	/DISCARD/ : { *(.hash*) }
-	/DISCARD/ : { *(.plt*) }
-	/DISCARD/ : { *(.interp*) }
-	/DISCARD/ : { *(.gnu*) }
+	.dynsym _end : { *(.dynsym) }
+	.dynbss : { *(.dynbss) }
+	.dynstr : { *(.dynstr*) }
+	.dynamic : { *(.dynamic*) }
+	.hash : { *(.hash*) }
+	.plt : { *(.plt*) }
+	.interp : { *(.interp*) }
+	.gnu : { *(.gnu*) }
+	.ARM.exidx : { *(.ARM.exidx*) }
 }