linux-kernel - [PATCH] [ARM] pxa: accept old ARM926 compatible CPUID for pxa168

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Message-Id: <1235051161-8858-8-git-send-email-eric.y.miao@gmail.com>
Date:	Thu, 19 Feb 2009 21:45:56 +0800
From:	Eric Miao <eric.y.miao@...il.com>
To:	LKML <linux-kernel@...r.kernel.org>
Cc:	linux-arm-kernel <linux-arm-kernel@...ts.arm.linux.org.uk>,
	Eric Miao <eric.miao@...vell.com>
Subject: [PATCH] [ARM] pxa: accept old ARM926 compatible CPUID for pxa168

From: Eric Miao <eric.miao@...vell.com>

Signed-off-by: Eric Miao <eric.miao@...vell.com>
---
 arch/arm/boot/compressed/head.S |    5 +++++
 arch/arm/mm/Kconfig             |    5 +++++
 arch/arm/mm/proc-mohawk.S       |   26 ++++++++++++++++++++++++++
 3 files changed, 36 insertions(+), 0 deletions(-)

diff --git a/arch/arm/boot/compressed/head.S b/arch/arm/boot/compressed/head.S
index 4629dc8..fa5089f 100644
--- a/arch/arm/boot/compressed/head.S
+++ b/arch/arm/boot/compressed/head.S
@@ -630,8 +630,13 @@ proc_types:
 		b	__armv4_mmu_cache_off
 		b	__armv4_mmu_cache_flush
 
+#ifdef CONFIG_CPU_MOHAWK_OLD_ID
+		.word 0x41159260		@ ARM926T (Marvell Mohawk)
+		.word 0xfffffff0
+#else
 		.word 0x56158000
 		.word 0xff0ff000
+#endif
 		b __armv4_mmu_cache_on
 		b __armv4_mmu_cache_off
 		b __armv5tej_mmu_cache_flush
diff --git a/arch/arm/mm/Kconfig b/arch/arm/mm/Kconfig
index 64086f4..3f1e41a 100644
--- a/arch/arm/mm/Kconfig
+++ b/arch/arm/mm/Kconfig
@@ -351,6 +351,11 @@ config CPU_MOHAWK
 	select CPU_TLB_V4WBI if MMU
 	select CPU_COPY_V4WB if MMU
 
+config CPU_MOHAWK_OLD_ID
+	bool "Accept Mohawk ARM926 Compatible CPUID"
+	depends on CPU_MOHAWK && !CPU_ARM926T
+	default y
+
 # Feroceon
 config CPU_FEROCEON
 	bool
diff --git a/arch/arm/mm/proc-mohawk.S b/arch/arm/mm/proc-mohawk.S
index 719659a..08dd551 100644
--- a/arch/arm/mm/proc-mohawk.S
+++ b/arch/arm/mm/proc-mohawk.S
@@ -395,6 +395,32 @@ cpu_pxa168_name:
 
 	.section ".proc.info.init", #alloc, #execinstr
 
+#ifdef CONFIG_CPU_MOHAWK_OLD_ID
+	.type	__mohawk_old_id_proc_info,#object
+	.long	0x41159260
+	.long	0xfffffff0
+	.long   PMD_TYPE_SECT | \
+		PMD_SECT_BUFFERABLE | \
+		PMD_SECT_CACHEABLE | \
+		PMD_BIT4 | \
+		PMD_SECT_AP_WRITE | \
+		PMD_SECT_AP_READ
+	.long   PMD_TYPE_SECT | \
+		PMD_BIT4 | \
+		PMD_SECT_AP_WRITE | \
+		PMD_SECT_AP_READ
+	b	__mohawk_setup
+	.long	cpu_arch_name
+	.long	cpu_elf_name
+	.long	HWCAP_SWP|HWCAP_HALF|HWCAP_THUMB|HWCAP_FAST_MULT|HWCAP_EDSP
+	.long	cpu_mohawk_name
+	.long	mohawk_processor_functions
+	.long	v4wbi_tlb_fns
+	.long	v4wb_user_fns
+	.long	mohawk_cache_fns
+	.size	__pxa168_proc_info, . - __pxa168_proc_info
+#endif
+
 	.type	__pxa168_proc_info,#object
 __pxa168_proc_info:
 	.long	0x56158400			@ Marvell PXA168
-- 
1.6.0.4

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