From: dwalker@codeaurora.org (Daniel Walker)
To: linux-arm-kernel@lists.infradead.org
Subject: [RFC 03/18] arm: boot: remove old ARM ID for QSD
Date: Mon, 11 Jan 2010 14:47:22 -0800 [thread overview]
Message-ID: <1263250057-26692-4-git-send-email-dwalker@codeaurora.org> (raw)
In-Reply-To: <1263250057-26692-1-git-send-email-dwalker@codeaurora.org>
From: Steve Muckle <smuckle@quicinc.com>
The mask and ID pattern for older ARM IDs in the kernel
decompressor matches the CPU ID for Scorpion, causing the
v7 caching routines not to be run and kernel decompression
to take significantly longer.
QSD may eventually use CPUs other than Scorpion, but they
will adhere to the new ARM CPU ID format, which is
incompatible with the entry for older ARM CPU IDs.
Signed-off-by: Steve Muckle <smuckle@quicinc.com>
Signed-off-by: Daniel Walker <dwalker@codeaurora.org>
---
arch/arm/boot/compressed/head.S | 2 ++
1 files changed, 2 insertions(+), 0 deletions(-)
diff --git a/arch/arm/boot/compressed/head.S b/arch/arm/boot/compressed/head.S
index d356af7..36c321c 100644
--- a/arch/arm/boot/compressed/head.S
+++ b/arch/arm/boot/compressed/head.S
@@ -620,6 +620,7 @@ proc_types:
@ b __arm6_mmu_cache_off
@ b __armv3_mmu_cache_flush
+#ifndef CONFIG_ARCH_MSM_SCORPION
.word 0x00000000 @ old ARM ID
.word 0x0000f000
mov pc, lr
@@ -628,6 +629,7 @@ proc_types:
THUMB( nop )
mov pc, lr
THUMB( nop )
+#endif
.word 0x41007000 @ ARM7/710
.word 0xfff8fe00
--
1.6.3.3
next prev parent reply other threads:[~2010-01-11 22:47 UTC|newest]
Thread overview: 68+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-01-11 22:47 [RFC 00/18] generic arm needed for msm Daniel Walker
2010-01-11 22:47 ` [RFC 01/18] arm: msm: allow ARCH_MSM to have v7 cpus Daniel Walker
2010-01-11 22:47 ` [RFC 02/18] arm: msm: add oprofile pmu support Daniel Walker
2010-01-11 22:47 ` Daniel Walker [this message]
2010-01-15 21:26 ` [RFC 03/18] arm: boot: remove old ARM ID for QSD Russell King - ARM Linux
2010-01-11 22:47 ` [RFC 04/18] arm: cache-l2x0: add l2x0 suspend and resume functions Daniel Walker
2010-01-11 23:44 ` Russell King - ARM Linux
2010-01-12 0:52 ` Ruan, Willie
2010-01-11 22:47 ` [RFC 05/18] arm: msm: implement ioremap_strongly_ordered Daniel Walker
2010-01-11 23:37 ` Russell King - ARM Linux
2010-01-28 23:04 ` Larry Bassel
2010-02-03 14:59 ` Russell King - ARM Linux
2010-01-11 22:47 ` [RFC 06/18] arm: msm: implement proper dmb() for 7x27 Daniel Walker
2010-01-11 23:39 ` Russell King - ARM Linux
2010-01-11 23:45 ` Daniel Walker
2010-01-12 0:01 ` Russell King - ARM Linux
2010-01-19 17:28 ` Jamie Lokier
2010-01-19 18:04 ` Russell King - ARM Linux
2010-01-19 21:12 ` Jamie Lokier
2010-01-19 23:11 ` Russell King - ARM Linux
2010-01-19 17:16 ` Jamie Lokier
2010-01-11 22:47 ` [RFC 07/18] arm: mm: retry on QSD icache parity errors Daniel Walker
2010-01-18 18:42 ` Ashwin Chaugule
2010-01-19 16:16 ` Ashwin Chaugule
2010-01-11 22:47 ` [RFC 08/18] arm: msm: set L2CR1 to enable prefetch and burst on Scorpion Daniel Walker
2010-01-11 23:45 ` Russell King - ARM Linux
2010-01-12 10:51 ` [RFC 08/18] arm: msm: set L2CR1 to enable prefetch and burston Scorpion Catalin Marinas
2010-01-12 11:23 ` Shilimkar, Santosh
2010-01-12 11:44 ` Russell King - ARM Linux
2010-01-12 13:32 ` [RFC 08/18] arm: msm: set L2CR1 to enable prefetch and burstonScorpion Catalin Marinas
2010-01-12 13:58 ` Russell King - ARM Linux
2010-01-12 14:41 ` [RFC 08/18] arm: msm: set L2CR1 to enable prefetch andburstonScorpion Catalin Marinas
2010-01-12 18:23 ` Daniel Walker
2010-01-13 10:36 ` Catalin Marinas
2010-01-19 17:38 ` Jamie Lokier
2010-01-13 6:14 ` [RFC 08/18] arm: msm: set L2CR1 to enable prefetch and burstonScorpion Shilimkar, Santosh
2010-01-12 20:21 ` [RFC 08/18] arm: msm: set L2CR1 to enable prefetch and burston Scorpion Nicolas Pitre
2010-01-11 22:47 ` [RFC 09/18] arm: mm: support error reporting in L1/L2 caches on QSD Daniel Walker
2010-01-11 22:47 ` [RFC 10/18] arm: mm: enable L2X0 to use L2 cache on MSM7X27 Daniel Walker
2010-01-11 22:47 ` [RFC 11/18] arm: msm: add ARCH_MSM_SCORPION to CPU_V7 Daniel Walker
2010-01-11 23:13 ` Russell King - ARM Linux
2010-01-11 23:17 ` Daniel Walker
2010-01-11 22:47 ` [RFC 12/18] arm: msm: Enable frequency scaling Daniel Walker
2010-01-11 22:47 ` [RFC 13/18] arm: msm: define HAVE_CLK for ARCH_MSM Daniel Walker
2010-01-11 22:47 ` [RFC 14/18] arm: msm: add v7 support for compiler version-4.1.1 Daniel Walker
2010-01-11 23:07 ` Russell King - ARM Linux
2010-01-11 22:47 ` [RFC 15/18] arm: vfp: Add additional vfp interfaces Daniel Walker
2010-01-11 22:47 ` [RFC 16/18] arm: msm: add arch_has_speculative_dfetch() Daniel Walker
2010-01-11 23:33 ` Russell King - ARM Linux
2010-01-12 0:28 ` Daniel Walker
2010-01-12 8:59 ` Russell King - ARM Linux
2010-01-11 22:47 ` [RFC 17/18] arm: mm: Add SW emulation for ARM domain manager feature Daniel Walker
2010-01-25 16:40 ` Catalin Marinas
2010-01-25 17:04 ` Nicolas Pitre
2010-01-25 18:25 ` Daniel Walker
2010-03-22 18:11 ` Daniel Walker
2010-03-22 18:58 ` Nicolas Pitre
2010-03-22 20:01 ` Daniel Walker
2010-03-22 20:32 ` Nicolas Pitre
2010-03-23 10:04 ` Catalin Marinas
2010-01-11 22:47 ` [RFC 18/18] arm: mm: qsd8x50: Fix incorrect permission faults Daniel Walker
2010-01-11 23:11 ` Russell King - ARM Linux
2010-01-19 17:10 ` Jamie Lokier
2010-01-19 17:33 ` Daniel Walker
2010-01-19 17:43 ` Jamie Lokier
2010-01-19 17:49 ` Daniel Walker
2010-01-19 18:09 ` Russell King - ARM Linux
2010-02-04 0:09 ` David Brown
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