85xx: Fix enabling of L1 cache parity on secondary cores

Use the same code between primary and secondary cores to init the
L1 cache.  We were not enabling cache parity on the secondary cores.

Also, reworked the L1 cache init code to match the e500mc L2 init code
that first invalidates the cache and locks.  Than enables the cache and
makes sure its enabled before continuing.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>

diff --git a/cpu/mpc85xx/release.S b/cpu/mpc85xx/release.S
index 00c4c54..dab784e 100644 (file)
--- a/cpu/mpc85xx/release.S
+++ b/cpu/mpc85xx/release.S
@@ -70,18 +70,40 @@ __secondary_start_page:
        mttbu   r3
 
        /* Enable/invalidate the I-Cache */
-       mfspr   r0,SPRN_L1CSR1
-       ori     r0,r0,(L1CSR1_ICFI|L1CSR1_ICE)
-       mtspr   SPRN_L1CSR1,r0
+       lis     r2,(L1CSR1_ICFI|L1CSR1_ICLFR)@h
+       ori     r2,r2,(L1CSR1_ICFI|L1CSR1_ICLFR)@l
+       mtspr   SPRN_L1CSR1,r2
+1:
+       mfspr   r3,SPRN_L1CSR1
+       and.    r1,r3,r2
+       bne     1b
+
+       lis     r3,(L1CSR1_CPE|L1CSR1_ICE)@h
+       ori     r3,r3,(L1CSR1_CPE|L1CSR1_ICE)@l
+       mtspr   SPRN_L1CSR1,r3
        isync
+2:
+       mfspr   r3,SPRN_L1CSR1
+       andi.   r1,r3,L1CSR1_ICE@l
+       beq     2b
 
        /* Enable/invalidate the D-Cache */
-       mfspr   r0,SPRN_L1CSR0
-       ori     r0,r0,(L1CSR0_DCFI|L1CSR0_DCE)
-       msync
-       isync
-       mtspr   SPRN_L1CSR0,r0
+       lis     r2,(L1CSR0_DCFI|L1CSR0_DCLFR)@h
+       ori     r2,r2,(L1CSR0_DCFI|L1CSR0_DCLFR)@l
+       mtspr   SPRN_L1CSR0,r2
+1:
+       mfspr   r3,SPRN_L1CSR0
+       and.    r1,r3,r2
+       bne     1b
+
+       lis     r3,(L1CSR0_CPE|L1CSR0_DCE)@h
+       ori     r3,r3,(L1CSR0_CPE|L1CSR0_DCE)@l
+       mtspr   SPRN_L1CSR0,r3
        isync
+2:
+       mfspr   r3,SPRN_L1CSR0
+       andi.   r1,r3,L1CSR0_DCE@l
+       beq     2b
 
 #define toreset(x) (x - __secondary_start_page + 0xfffff000)
 

diff --git a/cpu/mpc85xx/start.S b/cpu/mpc85xx/start.S
index 386fa81..af18c1c 100644 (file)
--- a/cpu/mpc85xx/start.S
+++ b/cpu/mpc85xx/start.S
@@ -108,13 +108,41 @@ _start_e500:
        mtspr   L1CSR2,r2
 #endif
 
-       lis     r2,L1CSR0_CPE@H /* enable parity */
-       ori     r2,r2,L1CSR0_DCE
-       mtspr   L1CSR0,r2       /* enable L1 Dcache */
+       /* Enable/invalidate the I-Cache */
+       lis     r2,(L1CSR1_ICFI|L1CSR1_ICLFR)@h
+       ori     r2,r2,(L1CSR1_ICFI|L1CSR1_ICLFR)@l
+       mtspr   SPRN_L1CSR1,r2
+1:
+       mfspr   r3,SPRN_L1CSR1
+       and.    r1,r3,r2
+       bne     1b
+
+       lis     r3,(L1CSR1_CPE|L1CSR1_ICE)@h
+       ori     r3,r3,(L1CSR1_CPE|L1CSR1_ICE)@l
+       mtspr   SPRN_L1CSR1,r3
        isync
-       mtspr   L1CSR1,r2       /* enable L1 Icache */
+2:
+       mfspr   r3,SPRN_L1CSR1
+       andi.   r1,r3,L1CSR1_ICE@l
+       beq     2b
+
+       /* Enable/invalidate the D-Cache */
+       lis     r2,(L1CSR0_DCFI|L1CSR0_DCLFR)@h
+       ori     r2,r2,(L1CSR0_DCFI|L1CSR0_DCLFR)@l
+       mtspr   SPRN_L1CSR0,r2
+1:
+       mfspr   r3,SPRN_L1CSR0
+       and.    r1,r3,r2
+       bne     1b
+
+       lis     r3,(L1CSR0_CPE|L1CSR0_DCE)@h
+       ori     r3,r3,(L1CSR0_CPE|L1CSR0_DCE)@l
+       mtspr   SPRN_L1CSR0,r3
        isync
-       msync
+2:
+       mfspr   r3,SPRN_L1CSR0
+       andi.   r1,r3,L1CSR0_DCE@l
+       beq     2b
 
        /* Setup interrupt vectors */
        lis     r1,TEXT_BASE@h

diff --git a/include/asm-ppc/processor.h b/include/asm-ppc/processor.h
index c6da411..9b3d616 100644 (file)
--- a/include/asm-ppc/processor.h
+++ b/include/asm-ppc/processor.h
@@ -485,10 +485,12 @@
 #define SPRN_L2CFG0    0x207   /* L2 Cache Configuration Register 0 */
 #define SPRN_L1CSR0    0x3f2   /* L1 Data Cache Control and Status Register 0 */
 #define   L1CSR0_CPE           0x00010000      /* Data Cache Parity Enable */
+#define   L1CSR0_DCLFR         0x00000100      /* D-Cache Lock Flash Reset */
 #define   L1CSR0_DCFI          0x00000002      /* Data Cache Flash Invalidate */
 #define   L1CSR0_DCE           0x00000001      /* Data Cache Enable */
 #define SPRN_L1CSR1    0x3f3   /* L1 Instruction Cache Control and Status Register 1 */
 #define   L1CSR1_CPE           0x00010000      /* Instruction Cache Parity Enable */
+#define   L1CSR1_ICLFR         0x00000100      /* I-Cache Lock Flash Reset */
 #define   L1CSR1_ICFI          0x00000002      /* Instruction Cache Flash Invalidate */
 #define   L1CSR1_ICE           0x00000001      /* Instruction Cache Enable */
 #define SPRN_L1CSR2    0x25e   /* L1 Data Cache Control and Status Register 2 */