From: Zhao Chenhui <chenhui.zhao@freescale.com>
To: <linuxppc-dev@lists.ozlabs.org>
Subject: [PATCH 15/17] powerpc/85xx: add support for e6500 L1 cache operation
Date: Wed, 3 Apr 2013 21:09:23 +0800 [thread overview]
Message-ID: <1364994565-16010-15-git-send-email-chenhui.zhao@freescale.com> (raw)
In-Reply-To: <1364994565-16010-1-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:[~2013-04-03 13:08 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-04-03 13:09 [PATCH 01/17] powerpc/85xx: fix a bug with the parameter of mpic_reset_core() Zhao Chenhui
2013-04-03 13:09 ` [PATCH 02/17] powerpc/85xx: do not sync time base at boot time Zhao Chenhui
2013-04-03 15:10 ` Kumar Gala
2013-04-04 1:20 ` Zhao Chenhui-B35336
2013-04-03 13:09 ` [PATCH 03/17] powerpc/85xx: cache operations for Freescale SoCs based on BOOK3E Zhao Chenhui
2013-04-15 8:38 ` Zhao Chenhui
2013-04-03 13:09 ` [PATCH 04/17] powerpc/85xx: add sleep and deep sleep support Zhao Chenhui
2013-04-03 13:09 ` [PATCH 05/17] fsl_pmc: Add API to enable device as wakeup event source Zhao Chenhui
2013-04-03 13:09 ` [PATCH 06/17] pm: add power node to dts Zhao Chenhui
2013-04-03 13:09 ` [PATCH 07/17] fsl_pmc: update device bindings Zhao Chenhui
2013-04-03 13:09 ` [PATCH 08/17] powerpc/85xx: add support to JOG feature using cpufreq interface Zhao Chenhui
2013-04-07 2:30 ` Tang Yuantian-B29983
2013-04-07 3:15 ` Zhao Chenhui
2013-04-03 13:09 ` [PATCH 09/17] powerpc/85xx: add time base sync for SoCs based on e500mc/e5500 Zhao Chenhui
2013-04-03 13:09 ` [PATCH 10/17] powerpc/85xx: add cpu hotplug support for e500mc/e5500 Zhao Chenhui
2013-04-03 13:09 ` [PATCH 11/17] powerpc/rcpm: add sleep feature for SoCs using RCPM Zhao Chenhui
2013-04-03 13:09 ` [PATCH 12/17] powerpc/85xx: fix 64-bit support for cpu hotplug Zhao Chenhui
2013-04-03 13:09 ` [PATCH 13/17] powerpc/rcpm: add struct ccsr_rcpm_v2 Zhao Chenhui
2013-04-03 13:09 ` [PATCH 14/17] powerpc/85xx: add time base sync support for e6500 Zhao Chenhui
2013-04-03 13:09 ` Zhao Chenhui [this message]
2013-04-03 13:09 ` [PATCH 16/17] powerpc/smp: add cpu hotplug " Zhao Chenhui
2013-04-03 13:09 ` [PATCH 17/17] powerpc/rcpm: add sleep support for T4/B4 chips Zhao Chenhui
2013-04-03 16:46 ` [PATCH 01/17] powerpc/85xx: fix a bug with the parameter of mpic_reset_core() Kumar Gala
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1364994565-16010-15-git-send-email-chenhui.zhao@freescale.com \
--to=chenhui.zhao@freescale.com \
--cc=linuxppc-dev@lists.ozlabs.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).