From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:44735) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Xz2j7-00056p-Uc for qemu-devel@nongnu.org; Thu, 11 Dec 2014 07:20:15 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Xz2j6-0007Vb-PN for qemu-devel@nongnu.org; Thu, 11 Dec 2014 07:20:13 -0500 Received: from mnementh.archaic.org.uk ([2001:8b0:1d0::1]:54567) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Xz2j6-0006sg-EB for qemu-devel@nongnu.org; Thu, 11 Dec 2014 07:20:12 -0500 Received: from pm215 by mnementh.archaic.org.uk with local (Exim 4.80) (envelope-from ) id 1Xz2ip-000198-Lg for qemu-devel@nongnu.org; Thu, 11 Dec 2014 12:19:55 +0000 From: Peter Maydell Date: Thu, 11 Dec 2014 12:19:29 +0000 Message-Id: <1418300395-4348-8-git-send-email-peter.maydell@linaro.org> In-Reply-To: <1418300395-4348-1-git-send-email-peter.maydell@linaro.org> References: <1418300395-4348-1-git-send-email-peter.maydell@linaro.org> Subject: [Qemu-devel] [PULL 07/33] target-arm: add CPREG secure state support List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org From: Fabian Aggeler Prepare ARMCPRegInfo to support specifying two fieldoffsets per register definition. This will allow us to keep one register definition for banked registers (different offsets for secure/ non-secure world). Also added secure state tracking field and flags. This allows for identification of the register info secure state. Signed-off-by: Fabian Aggeler Signed-off-by: Greg Bellows Reviewed-by: Peter Maydell Message-id: 1416242878-876-6-git-send-email-greg.bellows@linaro.org Signed-off-by: Peter Maydell --- target-arm/cpu.h | 36 ++++++++++++++++++++++++++++++++++-- 1 file changed, 34 insertions(+), 2 deletions(-) diff --git a/target-arm/cpu.h b/target-arm/cpu.h index 6881098..dd7d229 100644 --- a/target-arm/cpu.h +++ b/target-arm/cpu.h @@ -993,6 +993,21 @@ enum { ARM_CP_STATE_BOTH = 2, }; +/* ARM CP register secure state flags. These flags identify security state + * attributes for a given CP register entry. + * The existence of both or neither secure and non-secure flags indicates that + * the register has both a secure and non-secure hash entry. A single one of + * these flags causes the register to only be hashed for the specified + * security state. + * Although definitions may have any combination of the S/NS bits, each + * registered entry will only have one to identify whether the entry is secure + * or non-secure. + */ +enum { + ARM_CP_SECSTATE_S = (1 << 0), /* bit[0]: Secure state register */ + ARM_CP_SECSTATE_NS = (1 << 1), /* bit[1]: Non-secure state register */ +}; + /* Return true if cptype is a valid type field. This is used to try to * catch errors where the sentinel has been accidentally left off the end * of a list of registers. @@ -1127,6 +1142,8 @@ struct ARMCPRegInfo { int type; /* Access rights: PL*_[RW] */ int access; + /* Security state: ARM_CP_SECSTATE_* bits/values */ + int secure; /* The opaque pointer passed to define_arm_cp_regs_with_opaque() when * this register was defined: can be used to hand data through to the * register read/write functions, since they are passed the ARMCPRegInfo*. @@ -1136,12 +1153,27 @@ struct ARMCPRegInfo { * fieldoffset is non-zero, the reset value of the register. */ uint64_t resetvalue; - /* Offset of the field in CPUARMState for this register. This is not - * needed if either: + /* Offset of the field in CPUARMState for this register. + * + * This is not needed if either: * 1. type is ARM_CP_CONST or one of the ARM_CP_SPECIALs * 2. both readfn and writefn are specified */ ptrdiff_t fieldoffset; /* offsetof(CPUARMState, field) */ + + /* Offsets of the secure and non-secure fields in CPUARMState for the + * register if it is banked. These fields are only used during the static + * registration of a register. During hashing the bank associated + * with a given security state is copied to fieldoffset which is used from + * there on out. + * + * It is expected that register definitions use either fieldoffset or + * bank_fieldoffsets in the definition but not both. It is also expected + * that both bank offsets are set when defining a banked register. This + * use indicates that a register is banked. + */ + ptrdiff_t bank_fieldoffsets[2]; + /* Function for making any access checks for this register in addition to * those specified by the 'access' permissions bits. If NULL, no extra * checks required. The access check is performed at runtime, not at -- 1.9.1