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authorJayachandran C <jayachandranc@netlogicmicro.com>2012-07-03 19:04:02 +0200
committerRalf Baechle <ralf@linux-mips.org>2012-07-03 19:04:02 +0200
commitb876c1a0bcfe68a5eaf03f325cb2a09822bf11f2 (patch)
tree2c6b13b34c2f7c9ae1b80c1fb56f59826ab90244 /arch/mips/netlogic
parent249e2a38fbd28ffaadba112290742ada16946900 (diff)
downloadop-kernel-dev-b876c1a0bcfe68a5eaf03f325cb2a09822bf11f2.zip
op-kernel-dev-b876c1a0bcfe68a5eaf03f325cb2a09822bf11f2.tar.gz
MIPS: Netlogic: Fix TLB size of boot CPU.
Starting other threads in the core will change the number of TLB entries of a CPU. Re-calculate current_cpu_data.tlbsize on the boot cpu after enabling and waking up other threads. The secondary CPUs do not need this logic because the threads are enabled on the secondary cores at wakeup and before cpu_probe. Signed-off-by: Jayachandran C <jayachandranc@netlogicmicro.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/3751/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/netlogic')
-rw-r--r--arch/mips/netlogic/xlp/setup.c8
1 files changed, 7 insertions, 1 deletions
diff --git a/arch/mips/netlogic/xlp/setup.c b/arch/mips/netlogic/xlp/setup.c
index acb677a..b3df7c2 100644
--- a/arch/mips/netlogic/xlp/setup.c
+++ b/arch/mips/netlogic/xlp/setup.c
@@ -82,8 +82,10 @@ void __init prom_free_prom_memory(void)
void xlp_mmu_init(void)
{
+ /* enable extended TLB and Large Fixed TLB */
write_c0_config6(read_c0_config6() | 0x24);
- current_cpu_data.tlbsize = ((read_c0_config6() >> 16) & 0xffff) + 1;
+
+ /* set page mask of Fixed TLB in config7 */
write_c0_config7(PM_DEFAULT_MASK >>
(13 + (ffz(PM_DEFAULT_MASK >> 13) / 2)));
}
@@ -100,6 +102,10 @@ void __init prom_init(void)
nlm_common_ebase = read_c0_ebase() & (~((1 << 12) - 1));
#ifdef CONFIG_SMP
nlm_wakeup_secondary_cpus(0xffffffff);
+
+ /* update TLB size after waking up threads */
+ current_cpu_data.tlbsize = ((read_c0_config6() >> 16) & 0xffff) + 1;
+
register_smp_ops(&nlm_smp_ops);
#endif
}
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