Signed-off-by: Kumar Gala galak@kernel.crashing.org --- cpu/mpc85xx/release.S | 5 +++-- cpu/mpc85xx/start.S | 7 ++++--- include/asm-ppc/processor.h | 3 +++ 3 files changed, 10 insertions(+), 5 deletions(-)
diff --git a/cpu/mpc85xx/release.S b/cpu/mpc85xx/release.S index 00c4c54..36ea8c3 100644 --- a/cpu/mpc85xx/release.S +++ b/cpu/mpc85xx/release.S @@ -1,5 +1,5 @@ /* - * Copyright 2008-2009 Freescale Semiconductor, Inc. + * Copyright 2008-2010 Freescale Semiconductor, Inc. * Kumar Gala kumar.gala@freescale.com * * See file CREDITS for list of people who contributed to this @@ -61,7 +61,8 @@ __secondary_start_page: #endif
/* Enable branch prediction */ - li r3,0x201 + lis r3,BUCSR_ENABLE@h + ori r3,r3,BUCSR_ENABLE@l mtspr SPRN_BUCSR,r3
/* Ensure TB is 0 */ diff --git a/cpu/mpc85xx/start.S b/cpu/mpc85xx/start.S index 386fa81..5f63979 100644 --- a/cpu/mpc85xx/start.S +++ b/cpu/mpc85xx/start.S @@ -1,5 +1,5 @@ /* - * Copyright 2004, 2007-2009 Freescale Semiconductor, Inc. + * Copyright 2004, 2007-2010 Freescale Semiconductor, Inc. * Copyright (C) 2003 Motorola,Inc. * * See file CREDITS for list of people who contributed to this @@ -185,8 +185,9 @@ _start_e500:
/* Enable Branch Prediction */ #if defined(CONFIG_BTB) - li r0,0x201 /* BBFI = 1, BPEN = 1 */ - mtspr BUCSR,r0 + lis r0,BUCSR_ENABLE@h + ori r0,r0,BUCSR_ENABLE@l + mtspr SPRN_BUCSR,r0 #endif
#if defined(CONFIG_SYS_INIT_DBCR) diff --git a/include/asm-ppc/processor.h b/include/asm-ppc/processor.h index c6da411..b6aeb9f 100644 --- a/include/asm-ppc/processor.h +++ b/include/asm-ppc/processor.h @@ -531,6 +531,9 @@ #define SPRN_MCSRR0 0x23a /* Machine Check Save and Restore Register 0 */ #define SPRN_MCSRR1 0x23b /* Machine Check Save and Restore Register 1 */ #define SPRN_BUCSR 0x3f5 /* Branch Control and Status Register */ +#define BUCSR_BBFI 0x00000200 /* Branch buffer flash invalidate */ +#define BUCSR_BPEN 0x00000001 /* Branch prediction enable */ +#define BUCSR_ENABLE (BUCSR_BBFI|BUCSR_BPEN) #define SPRN_BBEAR 0x201 /* Branch Buffer Entry Address Register */ #define SPRN_BBTAR 0x202 /* Branch Buffer Target Address Register */ #define SPRN_PID1 0x279 /* Process ID Register 1 */