From 8799ee9f49f6171fd58f4d64f8c067ca49006a5d Mon Sep 17 00:00:00 2001 From: Russell King Date: Thu, 29 Jun 2006 18:24:21 +0100 Subject: [ARM] Set bit 4 on section mappings correctly depending on CPU On some CPUs, bit 4 of section mappings means "update the cache when written to". On others, this bit is required to be one, and others it's required to be zero. Finally, on ARMv6 and above, setting it turns on "no execute" and prevents speculative prefetches. With all these combinations, no one value fits all CPUs, so we have to pick a value depending on the CPU type, and the area we're mapping. Signed-off-by: Russell King --- arch/arm/mm/proc-arm1022.S | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'arch/arm/mm/proc-arm1022.S') diff --git a/arch/arm/mm/proc-arm1022.S b/arch/arm/mm/proc-arm1022.S index 92218e6b390..840dfc85ba6 100644 --- a/arch/arm/mm/proc-arm1022.S +++ b/arch/arm/mm/proc-arm1022.S @@ -471,6 +471,10 @@ cpu_arm1022_name: __arm1022_proc_info: .long 0x4105a220 @ ARM 1022E (v5TE) .long 0xff0ffff0 + .long PMD_TYPE_SECT | \ + PMD_BIT4 | \ + PMD_SECT_AP_WRITE | \ + PMD_SECT_AP_READ .long PMD_TYPE_SECT | \ PMD_BIT4 | \ PMD_SECT_AP_WRITE | \ -- cgit v1.2.3