diff options
| author | Joakim Tjernlund <joakim.tjernlund@infinera.com> | 2018-11-28 10:59:55 +0100 |
|---|---|---|
| committer | Mario Six <mario.six@gdsys.cc> | 2019-01-21 08:33:42 +0100 |
| commit | 64d68dcdd7de3f8a20753a73a988835fafc3ce7c (patch) | |
| tree | 9f68e5cc4f14f60a93219bc75b54284489b56fb8 /arch/powerpc | |
| parent | 2acc24fc28ef782f4baef1aa0193d520ee9610b9 (diff) | |
mpc83xx: Add support for -msingle-pic-base
-msingle-pic-base is a new gcc(from 4.6) option for ppc and
it reduces the size of my u-boot with about 4 KB.
While at it, add -fno-jump-tables too to save a
few more bytes.
Signed-off-by: Joakim Tjernlund <joakim.tjernlund@infinera.com>
Reviewed-by: Mario Six <mario.six@gdsys.cc>
Tested-by: Mario Six <mario.six@gdsys.cc> (on MPC8308)
Diffstat (limited to 'arch/powerpc')
| -rw-r--r-- | arch/powerpc/cpu/mpc83xx/config.mk | 1 | ||||
| -rw-r--r-- | arch/powerpc/cpu/mpc83xx/start.S | 3 |
2 files changed, 4 insertions, 0 deletions
diff --git a/arch/powerpc/cpu/mpc83xx/config.mk b/arch/powerpc/cpu/mpc83xx/config.mk index 14870eec4d..a07df4d389 100644 --- a/arch/powerpc/cpu/mpc83xx/config.mk +++ b/arch/powerpc/cpu/mpc83xx/config.mk @@ -3,3 +3,4 @@ # Copyright 2004 Freescale Semiconductor, Inc. PLATFORM_CPPFLAGS += -DCONFIG_E300 -msoft-float +PLATFORM_RELFLAGS += -msingle-pic-base -fno-jump-tables diff --git a/arch/powerpc/cpu/mpc83xx/start.S b/arch/powerpc/cpu/mpc83xx/start.S index a3bacf138c..c00bb31363 100644 --- a/arch/powerpc/cpu/mpc83xx/start.S +++ b/arch/powerpc/cpu/mpc83xx/start.S @@ -288,6 +288,9 @@ in_flash: /*------------------------------------------------------*/ GET_GOT /* initialize GOT access */ + /* Needed for -msingle-pic-base */ + bl _GLOBAL_OFFSET_TABLE_@local-4 + mflr r30 /* r3: IMMR */ lis r3, CONFIG_SYS_IMMR@h |