MIPS: Introduce --gc-sections for MIPS

All architectures but MIPS are using --gc-sections on final linking.
This patch introduces that feature for MIPS to reduce the memory and
flash footprint.

Signed-off-by: Daniel Schwierzeck <daniel.schwierzeck@googlemail.com>
Cc: Wolfgang Denk <wd@denx.de>
Cc: Stefan Roese <sr@denx.de>
Cc: Thomas Lange <thomas@corelatus.se>
Cc: Vlad Lungu <vlad.lungu@windriver.com>
Signed-off-by: Shinya Kuribayashi <skuribay@pobox.com>

diff --git a/arch/mips/config.mk b/arch/mips/config.mk
index 318d34b..6ab8acd 100644 (file)
--- a/arch/mips/config.mk
+++ b/arch/mips/config.mk
@@ -50,3 +50,5 @@ PLATFORM_CPPFLAGS += -DCONFIG_MIPS -D__MIPS__
 PLATFORM_CPPFLAGS              += -G 0 -mabicalls -fpic
 PLATFORM_CPPFLAGS              += -msoft-float
 PLATFORM_LDFLAGS               += -G 0 -static -n -nostdlib
+PLATFORM_RELFLAGS              += -ffunction-sections -fdata-sections
+LDFLAGS_FINAL                  += --gc-sections

diff --git a/board/dbau1x00/u-boot.lds b/board/dbau1x00/u-boot.lds
index 3c4fbe3..4a59cea 100644 (file)
--- a/board/dbau1x00/u-boot.lds
+++ b/board/dbau1x00/u-boot.lds
@@ -34,14 +34,14 @@ SECTIONS
        . = ALIGN(4);
        .text       :
        {
-         *(.text)
+         *(.text*)
        }
 
        . = ALIGN(4);
        .rodata  : { *(SORT_BY_ALIGNMENT(SORT_BY_NAME(.rodata*))) }
 
        . = ALIGN(4);
-       .data  : { *(.data) }
+       .data  : { *(.data*) }
 
        . = .;
        _gp = ALIGN(16) + 0x7ff0;
@@ -52,7 +52,7 @@ SECTIONS
          __got_end = .;
        }
 
-       .sdata  : { *(.sdata) }
+       .sdata  : { *(.sdata*) }
 
        .u_boot_cmd : {
          __u_boot_cmd_start = .;
@@ -64,7 +64,7 @@ SECTIONS
        num_got_entries = (__got_end - __got_start) >> 2;
 
        . = ALIGN(4);
-       .sbss (NOLOAD)  : { *(.sbss) }
-       .bss (NOLOAD)  : { *(.bss) . = ALIGN(4); }
+       .sbss (NOLOAD)  : { *(.sbss*) }
+       .bss (NOLOAD)  : { *(.bss*) . = ALIGN(4); }
        uboot_end = .;
 }

diff --git a/board/gth2/u-boot.lds b/board/gth2/u-boot.lds
index aeb0fcc..9fc417f 100644 (file)
--- a/board/gth2/u-boot.lds
+++ b/board/gth2/u-boot.lds
@@ -34,14 +34,14 @@ SECTIONS
        . = ALIGN(4);
        .text       :
        {
-         *(.text)
+         *(.text*)
        }
 
        . = ALIGN(4);
        .rodata  : { *(SORT_BY_ALIGNMENT(SORT_BY_NAME(.rodata*))) }
 
        . = ALIGN(4);
-       .data  : { *(.data) }
+       .data  : { *(.data*) }
 
        . = .;
        _gp = ALIGN(16) + 0x7ff0;
@@ -52,7 +52,7 @@ SECTIONS
          __got_end = .;
        }
 
-       .sdata  : { *(.sdata) }
+       .sdata  : { *(.sdata*) }
 
        .u_boot_cmd : {
          __u_boot_cmd_start = .;
@@ -64,7 +64,7 @@ SECTIONS
        num_got_entries = (__got_end - __got_start) >> 2;
 
        . = ALIGN(4);
-       .sbss (NOLOAD)  : { *(.sbss) }
-       .bss (NOLOAD)  : { *(.bss) . = ALIGN(4); }
+       .sbss (NOLOAD)  : { *(.sbss*) }
+       .bss (NOLOAD)  : { *(.bss*) . = ALIGN(4); }
        uboot_end = .;
 }

diff --git a/board/incaip/u-boot.lds b/board/incaip/u-boot.lds
index 3c4fbe3..4a59cea 100644 (file)
--- a/board/incaip/u-boot.lds
+++ b/board/incaip/u-boot.lds
@@ -34,14 +34,14 @@ SECTIONS
        . = ALIGN(4);
        .text       :
        {
-         *(.text)
+         *(.text*)
        }
 
        . = ALIGN(4);
        .rodata  : { *(SORT_BY_ALIGNMENT(SORT_BY_NAME(.rodata*))) }
 
        . = ALIGN(4);
-       .data  : { *(.data) }
+       .data  : { *(.data*) }
 
        . = .;
        _gp = ALIGN(16) + 0x7ff0;
@@ -52,7 +52,7 @@ SECTIONS
          __got_end = .;
        }
 
-       .sdata  : { *(.sdata) }
+       .sdata  : { *(.sdata*) }
 
        .u_boot_cmd : {
          __u_boot_cmd_start = .;
@@ -64,7 +64,7 @@ SECTIONS
        num_got_entries = (__got_end - __got_start) >> 2;
 
        . = ALIGN(4);
-       .sbss (NOLOAD)  : { *(.sbss) }
-       .bss (NOLOAD)  : { *(.bss) . = ALIGN(4); }
+       .sbss (NOLOAD)  : { *(.sbss*) }
+       .bss (NOLOAD)  : { *(.bss*) . = ALIGN(4); }
        uboot_end = .;
 }

diff --git a/board/micronas/vct/u-boot.lds b/board/micronas/vct/u-boot.lds
index b90b186..3a05ef9 100644 (file)
--- a/board/micronas/vct/u-boot.lds
+++ b/board/micronas/vct/u-boot.lds
@@ -31,14 +31,14 @@ SECTIONS
        . = ALIGN(4);
        .text       :
        {
-         *(.text)
+         *(.text*)
        }
 
        . = ALIGN(4);
        .rodata  : { *(SORT_BY_ALIGNMENT(SORT_BY_NAME(.rodata*))) }
 
        . = ALIGN(4);
-       .data  : { *(.data) }
+       .data  : { *(.data*) }
 
        . = .;
        _gp = ALIGN(16) + 0x7ff0;
@@ -50,7 +50,7 @@ SECTIONS
        }
 
        . = ALIGN(4);
-       .sdata  : { *(.sdata) }
+       .sdata  : { *(.sdata*) }
 
        . = ALIGN(4);
        .u_boot_cmd : {
@@ -64,8 +64,8 @@ SECTIONS
        num_got_entries = (__got_end - __got_start) >> 2;
 
        . = ALIGN(4);
-       .sbss (NOLOAD)  : { *(.sbss) }
+       .sbss (NOLOAD)  : { *(.sbss*) }
        . = ALIGN(4);
-       .bss (NOLOAD)  : { *(.bss) }
+       .bss (NOLOAD)  : { *(.bss*) }
        uboot_end = .;
 }

diff --git a/board/pb1x00/u-boot.lds b/board/pb1x00/u-boot.lds
index 358cc54..bd0dee1 100644 (file)
--- a/board/pb1x00/u-boot.lds
+++ b/board/pb1x00/u-boot.lds
@@ -34,14 +34,14 @@ SECTIONS
        . = ALIGN(4);
        .text       :
        {
-         *(.text)
+         *(.text*)
        }
 
        . = ALIGN(4);
        .rodata  : { *(SORT_BY_ALIGNMENT(SORT_BY_NAME(.rodata*))) }
 
        . = ALIGN(4);
-       .data  : { *(.data) }
+       .data  : { *(.data*) }
 
        . = .;
        _gp = ALIGN(16) + 0x7ff0;
@@ -52,7 +52,7 @@ SECTIONS
          __got_end = .;
        }
 
-       .sdata  : { *(.sdata) }
+       .sdata  : { *(.sdata*) }
 
        .u_boot_cmd : {
          __u_boot_cmd_start = .;
@@ -64,7 +64,7 @@ SECTIONS
        num_got_entries = (__got_end - __got_start) >> 2;
 
        . = ALIGN(4);
-       .sbss (NOLOAD)  : { *(.sbss) }
-       .bss (NOLOAD)  : { *(.bss) . = ALIGN(4); }
+       .sbss (NOLOAD)  : { *(.sbss*) }
+       .bss (NOLOAD)  : { *(.bss*) . = ALIGN(4); }
        uboot_end = .;
 }

diff --git a/board/qemu-mips/u-boot.lds b/board/qemu-mips/u-boot.lds
index bd16786..9460b20 100644 (file)
--- a/board/qemu-mips/u-boot.lds
+++ b/board/qemu-mips/u-boot.lds
@@ -34,14 +34,14 @@ SECTIONS
        . = ALIGN(4);
        .text       :
        {
-         *(.text)
+         *(.text*)
        }
 
        . = ALIGN(4);
        .rodata  : { *(SORT_BY_ALIGNMENT(SORT_BY_NAME(.rodata*))) }
 
        . = ALIGN(4);
-       .data  : { *(.data) }
+       .data  : { *(.data*) }
 
        . = .;
        _gp = ALIGN(16) +0x7ff0;
@@ -53,7 +53,7 @@ SECTIONS
        }
 
        . = ALIGN(4);
-       .sdata  : { *(.sdata) }
+       .sdata  : { *(.sdata*) }
 
        . = .;
        .u_boot_cmd : {
@@ -66,7 +66,7 @@ SECTIONS
        num_got_entries = (__got_end - __got_start) >> 2;
 
        . = ALIGN(4);
-       .sbss  : { *(.sbss) }
-       .bss  : { *(.bss) . = ALIGN(4); }
+       .sbss  : { *(.sbss*) }
+       .bss  : { *(.bss*) . = ALIGN(4); }
        uboot_end = .;
 }

diff --git a/board/tb0229/u-boot.lds b/board/tb0229/u-boot.lds
index 56d7c25..5ea1094 100644 (file)
--- a/board/tb0229/u-boot.lds
+++ b/board/tb0229/u-boot.lds
@@ -34,14 +34,14 @@ SECTIONS
        . = ALIGN(4);
        .text       :
        {
-         *(.text)
+         *(.text*)
        }
 
        . = ALIGN(4);
        .rodata  : { *(SORT_BY_ALIGNMENT(SORT_BY_NAME(.rodata*))) }
 
        . = ALIGN(4);
-       .data  : { *(.data) }
+       .data  : { *(.data*) }
 
        . = .;
        _gp = ALIGN(16) + 0x7ff0;
@@ -52,7 +52,7 @@ SECTIONS
          __got_end = .;
        }
 
-       .sdata  : { *(.sdata) }
+       .sdata  : { *(.sdata*) }
 
        .u_boot_cmd : {
          __u_boot_cmd_start = .;
@@ -64,7 +64,7 @@ SECTIONS
        num_got_entries = (__got_end - __got_start) >> 2;
 
        . = ALIGN(4);
-       .sbss (NOLOAD)  : { *(.sbss) }
-       .bss (NOLOAD)  : { *(.bss) . = ALIGN(4); }
+       .sbss (NOLOAD)  : { *(.sbss*) }
+       .bss (NOLOAD)  : { *(.bss*) . = ALIGN(4); }
        uboot_end = .;
 }

diff --git a/examples/standalone/mips.lds b/examples/standalone/mips.lds
index 63a1c92..5f766ed 100644 (file)
--- a/examples/standalone/mips.lds
+++ b/examples/standalone/mips.lds
@@ -30,14 +30,14 @@ SECTIONS
 {
        .text       :
        {
-         *(.text)
+         *(.text*)
        }
 
        . = ALIGN(4);
        .rodata  : { *(SORT_BY_ALIGNMENT(SORT_BY_NAME(.rodata*))) }
 
        . = ALIGN(4);
-       .data  : { *(.data) }
+       .data  : { *(.data*) }
 
        . = .;
        _gp = ALIGN(16) + 0x7ff0;
@@ -48,12 +48,12 @@ SECTIONS
          __got_end = .;
        }
 
-       .sdata  : { *(.sdata) }
+       .sdata  : { *(.sdata*) }
 
        . = ALIGN(4);
        __bss_start = .;
-       .sbss (NOLOAD) : { *(.sbss) }
-       .bss (NOLOAD)  : { *(.bss) . = ALIGN(4); }
+       .sbss (NOLOAD) : { *(.sbss*) }
+       .bss (NOLOAD)  : { *(.bss*) . = ALIGN(4); }
 
        _end = .;
 }