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authorVladimir Murzin <vladimir.murzin@arm.com>2018-07-23 09:36:18 +0100
committerRussell King <rmk+kernel@armlinux.org.uk>2018-07-30 11:45:51 +0100
commitc803ce3f18bd93b3b4a15d1da0c5b5ebc60e0b85 (patch)
tree272332a7605f25e2f47eb653be3d53d9ef2c9e21 /arch/arm64
parent35f5a6acfb5be94e0b9df21c2a5ba934237c1ca3 (diff)
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ARM: 8783/1: NOMMU: Extend check for VBAR support
ARMv8R adds support for VBAR and updates ID_PFR1 with the new filed Sec_frac (bits [23:20]): Security fractional field. When the Security field is 0000, determines the support for features from the ARMv7 Security Extensions. Permitted values are: 0000 No features from the ARMv7 Security Extensions are implemented. This value is not supported in ARMv8 if ID_PFR1 bits [7:4] are zero. 0001 The implementation includes the VBAR, and the TCR.PD0 and TCR.PD1 bits. 0010 As for 0001, plus the ability to access Secure or Non-secure physical memory is supported. All other values are reserved. This field is only valid when ID_PFR1[7:4] == 0, otherwise it holds the value 0000. Signed-off-by: Vladimir Murzin <vladimir.murzin@arm.com> Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
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