From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: linuxppc-dev@ozlabs.org
Subject: [PATCH 10/15] powerpc: Initialize TLB and LPID register on HV mode Power7
Date: Tue, 5 Apr 2011 16:14:06 +1000 [thread overview]
Message-ID: <1301984051-18413-11-git-send-email-benh@kernel.crashing.org> (raw)
In-Reply-To: <1301984051-18413-1-git-send-email-benh@kernel.crashing.org>
In case entry from the bootloader isn't "clean"
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
arch/powerpc/kernel/cpu_setup_power7.S | 18 ++++++++++++++++++
1 files changed, 18 insertions(+), 0 deletions(-)
diff --git a/arch/powerpc/kernel/cpu_setup_power7.S b/arch/powerpc/kernel/cpu_setup_power7.S
index 2390f6f..4f9a93f 100644
--- a/arch/powerpc/kernel/cpu_setup_power7.S
+++ b/arch/powerpc/kernel/cpu_setup_power7.S
@@ -25,7 +25,10 @@ _GLOBAL(__setup_cpu_power7)
bl __init_hvmode_206
mtlr r11
beqlr
+ li r0,0
+ mtspr SPRN_LPID,r0
bl __init_LPCR
+ bl __init_TLB
mtlr r11
blr
@@ -34,7 +37,10 @@ _GLOBAL(__restore_cpu_power7)
mfmsr r3
rldicl. r0,r3,4,63
beqlr
+ li r0,0
+ mtspr SPRN_LPID,r0
bl __init_LPCR
+ bl __init_TLB
mtlr r11
blr
@@ -71,3 +77,15 @@ __init_LPCR:
mtspr SPRN_LPCR,r3
isync
blr
+
+__init_TLB:
+ /* Clear the TLB */
+ li r6,128
+ mtctr r6
+ li r7,0xc00 /* IS field = 0b11 */
+ ptesync
+2: tlbiel r7
+ addi r7,r7,0x1000
+ bdnz 2b
+ ptesync
+1: blr
--
1.7.1
next prev parent reply other threads:[~2011-04-05 6:14 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-04-05 6:13 [PATCHES] Bits and pieces for Power7 support in HV mode Benjamin Herrenschmidt
2011-04-05 6:13 ` [PATCH 01/15] powerpc: Add more Power7 specific definitions Benjamin Herrenschmidt
2011-04-05 6:13 ` [PATCH 02/15] powerpc/rtas: Check RTAS presence when testing indicators Benjamin Herrenschmidt
2011-04-05 6:36 ` Michael Ellerman
2011-04-05 6:52 ` Benjamin Herrenschmidt
2011-04-05 6:13 ` [PATCH 03/15] powerpc/xics: Make sure we have a sensible default distribution server Benjamin Herrenschmidt
2011-04-05 6:14 ` [PATCH 04/15] powerpc: Define CPU feature for Architected 2.06 HV mode Benjamin Herrenschmidt
2011-04-05 6:30 ` Michael Neuling
2011-04-05 6:50 ` Benjamin Herrenschmidt
2011-04-07 4:23 ` [PATCH] powerpc: Use new CPU feature bit to select 2.06 tlbie Michael Neuling
2011-04-05 6:14 ` [PATCH 05/15] powerpc: In HV mode, use HSPRG0 for PACA Benjamin Herrenschmidt
2011-04-05 6:14 ` [PATCH 06/15] powerpc: Base support for exceptions using HSRR0/1 Benjamin Herrenschmidt
2011-04-05 6:14 ` [PATCH 07/15] powerpc: More work to support HV exceptions Benjamin Herrenschmidt
2011-04-05 6:14 ` [PATCH 08/15] powerpc: Always use SPRN_SPRG_HSCRATCH0 when running in HV mode Benjamin Herrenschmidt
2011-04-05 6:14 ` [PATCH 09/15] powerpc: Initialize LPCR:DPFD on power7 to a sane default Benjamin Herrenschmidt
2011-04-05 6:14 ` Benjamin Herrenschmidt [this message]
2011-04-05 6:14 ` [PATCH 11/15] powerpc: Call CPU ->restore callback earlier on secondary CPUs Benjamin Herrenschmidt
2011-04-05 6:14 ` [PATCH 12/15] powerpc: Properly handshake CPUs going out of boot spin loop Benjamin Herrenschmidt
2011-04-05 6:14 ` [PATCH 13/15] powerpc: Add NAP mode support on Power7 in HV mode Benjamin Herrenschmidt
2011-04-05 6:14 ` [PATCH 14/15] powerpc: Perform an isync to synchronize CPUs coming out of secondary_hold Benjamin Herrenschmidt
2011-04-05 6:14 ` [PATCH 15/15] powerpc: Improve prom_printf() Benjamin Herrenschmidt
2011-04-05 6:47 ` Segher Boessenkool
2011-04-05 6:53 ` Benjamin Herrenschmidt
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=1301984051-18413-11-git-send-email-benh@kernel.crashing.org \
--to=benh@kernel.crashing.org \
--cc=linuxppc-dev@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).