From: James Yang James.Yang@freescale.com
Add e6500 L2 replacement policy selection. This is compile-time config.
Signed-off-by: James Yang James.Yang@freescale.com --- arch/powerpc/cpu/mpc85xx/cpu_init.c | 2 +- arch/powerpc/cpu/mpc85xx/start.S | 1 + arch/powerpc/include/asm/processor.h | 9 +++++++++ 3 files changed, 11 insertions(+), 1 deletion(-)
diff --git a/arch/powerpc/cpu/mpc85xx/cpu_init.c b/arch/powerpc/cpu/mpc85xx/cpu_init.c index f697c3d..29346d9 100644 --- a/arch/powerpc/cpu/mpc85xx/cpu_init.c +++ b/arch/powerpc/cpu/mpc85xx/cpu_init.c @@ -337,7 +337,7 @@ int enable_cluster_l2(void) while ((in_be32(&l2cache->l2csr0) & (L2CSR0_L2FI|L2CSR0_L2LFC)) != 0) ; - out_be32(&l2cache->l2csr0, L2CSR0_L2E|L2CSR0_L2PE); + out_be32(&l2cache->l2csr0, L2CSR0_L2E|L2CSR0_L2PE|L2CSR0_L2REP_MODE); } i++; } while (!(cluster & TP_CLUSTER_EOC)); diff --git a/arch/powerpc/cpu/mpc85xx/start.S b/arch/powerpc/cpu/mpc85xx/start.S index 87168e2..e413e4a 100644 --- a/arch/powerpc/cpu/mpc85xx/start.S +++ b/arch/powerpc/cpu/mpc85xx/start.S @@ -735,6 +735,7 @@ enable_l2_cluster_l2: and. r1, r0, r4 bne 1b lis r4, (L2CSR0_L2E|L2CSR0_L2PE)@h + ori r4, r4, (L2CSR0_L2REP_MODE)@l sync stw r4, 0(r3) /* enable L2 */ delete_ccsr_l2_tlb: diff --git a/arch/powerpc/include/asm/processor.h b/arch/powerpc/include/asm/processor.h index 5c0c438..1760aa1 100644 --- a/arch/powerpc/include/asm/processor.h +++ b/arch/powerpc/include/asm/processor.h @@ -507,6 +507,15 @@ #define L2CSR0_L2IO 0x00100000 /* L2 Cache Instruction Only */ #define L2CSR0_L2DO 0x00010000 /* L2 Cache Data Only */ #define L2CSR0_L2REP 0x00003000 /* L2 Line Replacement Algo */ + +/* e6500 */ +#define L2CSR0_L2REP_SPLRUAGE 0x00000000 /* L2REP Streaming PLRU with Aging */ +#define L2CSR0_L2REP_FIFO 0x00001000 /* L2REP FIFO */ +#define L2CSR0_L2REP_SPLRU 0x00002000 /* L2REP Streaming PLRU */ +#define L2CSR0_L2REP_PLRU 0x00003000 /* L2REP PLRU */ + +#define L2CSR0_L2REP_MODE L2CSR0_L2REP_SPLRUAGE + #define L2CSR0_L2FL 0x00000800 /* L2 Cache Flush */ #define L2CSR0_L2LFC 0x00000400 /* L2 Cache Lock Flash Clear */ #define L2CSR0_L2LOA 0x00000080 /* L2 Cache Lock Overflow Allocate */