From: Zhao Chenhui <chenhui.zhao@freescale.com>
To: <linuxppc-dev@lists.ozlabs.org>
Cc: linux-kernel@vger.kernel.org
Subject: [PATCH v2 13/15] powerpc/85xx: add support for e6500 L1 cache operation
Date: Fri, 19 Apr 2013 18:47:46 +0800 [thread overview]
Message-ID: <1366368468-29143-13-git-send-email-chenhui.zhao@freescale.com> (raw)
In-Reply-To: <1366368468-29143-1-git-send-email-chenhui.zhao@freescale.com>
From: Chen-Hui Zhao <chenhui.zhao@freescale.com>
The L1 Data Cache of e6500 contains no modified data, no flush
is required.
Signed-off-by: Zhao Chenhui <chenhui.zhao@freescale.com>
Signed-off-by: Li Yang <leoli@freescale.com>
Signed-off-by: Andy Fleming <afleming@freescale.com>
---
arch/powerpc/kernel/fsl_booke_cache.S | 11 ++++++++++-
1 files changed, 10 insertions(+), 1 deletions(-)
diff --git a/arch/powerpc/kernel/fsl_booke_cache.S b/arch/powerpc/kernel/fsl_booke_cache.S
index 232c47b..24a52bb 100644
--- a/arch/powerpc/kernel/fsl_booke_cache.S
+++ b/arch/powerpc/kernel/fsl_booke_cache.S
@@ -65,13 +65,22 @@ _GLOBAL(flush_dcache_L1)
blr
+#define PVR_E6500 0x8040
+
/* Flush L1 d-cache, invalidate and disable d-cache and i-cache */
_GLOBAL(__flush_disable_L1)
+/* L1 Data Cache of e6500 contains no modified data, no flush is required */
+ mfspr r3, SPRN_PVR
+ rlwinm r4, r3, 16, 0xffff
+ lis r5, 0
+ ori r5, r5, PVR_E6500@l
+ cmpw r4, r5
+ beq 2f
mflr r10
bl flush_dcache_L1 /* Flush L1 d-cache */
mtlr r10
- msync
+2: msync
mfspr r4, SPRN_L1CSR0 /* Invalidate and disable d-cache */
li r5, 2
rlwimi r4, r5, 0, 3
--
1.7.3
next prev parent reply other threads:[~2013-04-19 10:48 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-04-19 10:47 [PATCH v2 01/15] powerpc/85xx: cache operations for Freescale SoCs based on BOOK3E Zhao Chenhui
2013-04-19 10:47 ` [PATCH v2 02/15] powerpc/85xx: add sleep and deep sleep support Zhao Chenhui
2013-04-23 23:53 ` Scott Wood
2013-04-28 10:20 ` Zhao Chenhui
2013-04-19 10:47 ` [PATCH v2 03/15] fsl_pmc: Add API to enable device as wakeup event source Zhao Chenhui
2013-04-19 10:47 ` [PATCH v2 04/15] pm: add power node to dts Zhao Chenhui
2013-04-19 10:47 ` [PATCH v2 05/15] fsl_pmc: update device bindings Zhao Chenhui
2013-06-03 22:43 ` Scott Wood
2013-04-19 10:47 ` [PATCH v2 06/15] powerpc/85xx: add support to JOG feature using cpufreq interface Zhao Chenhui
2013-04-22 3:25 ` Viresh Kumar
2013-04-22 10:56 ` Zhao Chenhui
2013-04-19 10:47 ` [PATCH v2 07/15] powerpc/85xx: add time base sync for SoCs based on e500mc/e5500 Zhao Chenhui
2013-04-23 23:58 ` Scott Wood
2013-04-19 10:47 ` [PATCH v2 08/15] powerpc/85xx: add cpu hotplug support for e500mc/e5500 Zhao Chenhui
2013-04-19 10:47 ` [PATCH v2 09/15] powerpc/rcpm: add sleep feature for SoCs using RCPM Zhao Chenhui
2013-04-19 10:47 ` [PATCH v2 10/15] powerpc/85xx: fix 64-bit support for cpu hotplug Zhao Chenhui
2013-04-19 10:47 ` [PATCH v2 11/15] powerpc/rcpm: add struct ccsr_rcpm_v2 Zhao Chenhui
2013-04-19 10:47 ` [PATCH v2 12/15] powerpc/85xx: add time base sync support for e6500 Zhao Chenhui
2013-04-24 0:04 ` Scott Wood
2013-04-24 11:29 ` Zhao Chenhui
2013-04-24 22:38 ` Scott Wood
2013-04-25 0:28 ` Zhao Chenhui
2013-04-26 0:07 ` Scott Wood
2013-04-28 9:56 ` Zhao Chenhui
2013-04-29 20:18 ` Scott Wood
2013-04-19 10:47 ` Zhao Chenhui [this message]
2013-04-24 0:00 ` [PATCH v2 13/15] powerpc/85xx: add support for e6500 L1 cache operation Scott Wood
2013-04-24 11:14 ` Zhao Chenhui
2013-04-19 10:47 ` [PATCH v2 14/15] powerpc/smp: add cpu hotplug support for e6500 Zhao Chenhui
2013-04-19 10:47 ` [PATCH v2 15/15] powerpc/rcpm: add sleep support for T4/B4 chips Zhao Chenhui
2013-04-23 9:53 ` [linuxppc-release] [PATCH v2 01/15] powerpc/85xx: cache operations for Freescale SoCs based on BOOK3E Zhao Chenhui
2013-04-23 23:46 ` Scott Wood
2013-04-24 11:08 ` Zhao Chenhui
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