From: Prabhakar Kushwaha <prabha...@freescale.com>
Different personalities/derivatives of SoC may have reduced cluster. But it is
not necessary for last valid DCFG_CCSR_TP_CLUSTER register to have
DCFG_CCSR_TP_CLUSTER[EOC] bit set to represent "End of Clusters".
EOC bit can still be set in last DCFG_CCSR_TP_CLUSTER register of orignal SoC
which may not be valid for the personality.
So add initiator type check to find valid cluster.
Signed-off-by: Prabhakar Kushwaha <prabha...@freescale.com>
Signed-off-by: Poonam Aggrwal <poonam.aggr...@freescale.com>
---
arch/powerpc/cpu/mpc85xx/cpu_init.c | 30 ++++++++++++++++++++++--------
1 files changed, 22 insertions(+), 8 deletions(-)
diff --git a/arch/powerpc/cpu/mpc85xx/cpu_init.c
b/arch/powerpc/cpu/mpc85xx/cpu_init.c
index d1155e8..cc09300 100644
--- a/arch/powerpc/cpu/mpc85xx/cpu_init.c
+++ b/arch/powerpc/cpu/mpc85xx/cpu_init.c
@@ -312,19 +312,33 @@ int enable_cluster_l2(void)
/* Look through the remaining clusters, and set up their caches */
do {
+ int j, cluster_valid = 0;
+
l2cache = (void __iomem *)(CONFIG_SYS_FSL_CLUSTER_1_L2 + i *
0x40000);
+
cluster = in_be32(&gur->tp_cluster[i].lower);
- /* set stash ID to (cluster) * 2 + 32 + 1 */
- clrsetbits_be32(&l2cache->l2csr1, 0xff, 32 + i * 2 + 1);
+ /* check that at least one core/accel is enabled in cluster */
+ for (j = 0; j < 4; j++) {
+ u32 idx = (cluster >> (j*8)) & TP_CLUSTER_INIT_MASK;
+ u32 type = in_be32(&gur->tp_ityp[idx]);
- printf("enable l2 for cluster %d %p\n", i, l2cache);
+ if (type & TP_ITYP_AV)
+ cluster_valid = 1;
+ }
- out_be32(&l2cache->l2csr0, L2CSR0_L2FI|L2CSR0_L2LFC);
- while ((in_be32(&l2cache->l2csr0) &
- (L2CSR0_L2FI|L2CSR0_L2LFC)) != 0)
- ;
- out_be32(&l2cache->l2csr0, L2CSR0_L2E);
+ if (cluster_valid) {
+ /* set stash ID to (cluster) * 2 + 32 + 1 */
+ clrsetbits_be32(&l2cache->l2csr1, 0xff, 32 + i * 2 + 1);
+
+ printf("enable l2 for cluster %d %p\n", i, l2cache);
+
+ out_be32(&l2cache->l2csr0, L2CSR0_L2FI|L2CSR0_L2LFC);
+ while ((in_be32(&l2cache->l2csr0)
+ & (L2CSR0_L2FI|L2CSR0_L2LFC)) != 0)
+ ;
+ out_be32(&l2cache->l2csr0, L2CSR0_L2E);
+ }
i++;
} while (!(cluster & TP_CLUSTER_EOC));
--
1.6.5.6
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