From 64d68dcdd7de3f8a20753a73a988835fafc3ce7c Mon Sep 17 00:00:00 2001 From: Joakim Tjernlund <joakim.tjernlund@infinera.com> Date: Wed, 28 Nov 2018 10:59:55 +0100 Subject: [PATCH] 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) --- arch/powerpc/cpu/mpc83xx/config.mk | 1 + arch/powerpc/cpu/mpc83xx/start.S | 3 +++ 2 files changed, 4 insertions(+) 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 -- 2.39.5