diff options
author | David Daney <david.daney@cavium.com> | 2015-01-15 16:11:15 +0300 |
---|---|---|
committer | Ralf Baechle <ralf@linux-mips.org> | 2015-02-20 15:31:59 +0100 |
commit | 726da2f82a1659da5d4d3473427fdb198ffde370 (patch) | |
tree | 733b56095f351b340585ab23779a76310dd0e292 /arch/mips/include | |
parent | debe6a623d3cdc7f0374124830587fb8d1a04b63 (diff) | |
download | op-kernel-dev-726da2f82a1659da5d4d3473427fdb198ffde370.zip op-kernel-dev-726da2f82a1659da5d4d3473427fdb198ffde370.tar.gz |
MIPS: OCTEON: Core-15169 Workaround and general CVMSEG cleanup.
Signed-off-by: David Daney <david.daney@cavium.com>
Signed-off-by: Aleksey Makarov <aleksey.makarov@auriga.com>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/8943/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/include')
-rw-r--r-- | arch/mips/include/asm/mach-cavium-octeon/kernel-entry-init.h | 19 |
1 files changed, 16 insertions, 3 deletions
diff --git a/arch/mips/include/asm/mach-cavium-octeon/kernel-entry-init.h b/arch/mips/include/asm/mach-cavium-octeon/kernel-entry-init.h index 21732c3..c7ce081 100644 --- a/arch/mips/include/asm/mach-cavium-octeon/kernel-entry-init.h +++ b/arch/mips/include/asm/mach-cavium-octeon/kernel-entry-init.h @@ -8,11 +8,10 @@ #ifndef __ASM_MACH_CAVIUM_OCTEON_KERNEL_ENTRY_H #define __ASM_MACH_CAVIUM_OCTEON_KERNEL_ENTRY_H - -#define CP0_CYCLE_COUNTER $9, 6 #define CP0_CVMCTL_REG $9, 7 #define CP0_CVMMEMCTL_REG $11,7 #define CP0_PRID_REG $15, 0 +#define CP0_DCACHE_ERR_REG $27, 1 #define CP0_PRID_OCTEON_PASS1 0x000d0000 #define CP0_PRID_OCTEON_CN30XX 0x000d0200 @@ -60,7 +59,7 @@ skip: # First clear off CvmCtl[IPPCI] bit and move the performance # counters interrupt to IRQ 6 - li v1, ~(7 << 7) + dli v1, ~(7 << 7) and v0, v0, v1 ori v0, v0, (6 << 7) @@ -90,6 +89,20 @@ skip: sync # Flush dcache after config change cache 9, 0($0) + # Zero all of CVMSEG to make sure parity is correct + dli v0, CONFIG_CAVIUM_OCTEON_CVMSEG_SIZE + dsll v0, 7 + beqz v0, 2f +1: dsubu v0, 8 + sd $0, -32768(v0) + bnez v0, 1b +2: + mfc0 v0, CP0_PRID_REG + bbit0 v0, 15, 1f + # OCTEON II or better have bit 15 set. Clear the error bits. + dli v0, 0x27 + dmtc0 v0, CP0_DCACHE_ERR_REG +1: # Get my core id rdhwr v0, $0 # Jump the master to kernel_entry |