diff options
author | Peter Maydell <peter.maydell@linaro.org> | 2017-01-10 18:26:55 +0000 |
---|---|---|
committer | Peter Maydell <peter.maydell@linaro.org> | 2017-01-10 18:35:32 +0000 |
commit | 152d2f91af89d446f4a1e0b7e862263136eacd0e (patch) | |
tree | e040bd797955a667a5ab28d97b576b7e2da01ade | |
parent | d89f9aef81edef1de41bed428f9e380f40506c3c (diff) |
target/arm: Implement DBGVCR32_EL2 system registeraarch32-guest
The DBGVCR_EL2 system register is needed to run a 32-bit
EL1 guest under a Linux EL2 64-bit hypervisor. Its only
purpose is to provide AArch64 with access to the state of
the DBGVCR AArch32 register. Since we only have a dummy
DBGVCR, implement a corresponding dummy DBGVCR32_EL2.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
-rw-r--r-- | target/arm/helper.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/target/arm/helper.c b/target/arm/helper.c index dc9098658b..bda562d779 100644 --- a/target/arm/helper.c +++ b/target/arm/helper.c @@ -4066,6 +4066,13 @@ static const ARMCPRegInfo debug_cp_reginfo[] = { .cp = 14, .opc1 = 0, .crn = 0, .crm = 7, .opc2 = 0, .access = PL1_RW, .accessfn = access_tda, .type = ARM_CP_NOP }, + /* Dummy DBGVCR32_EL2 (which is only for a 64-bit hypervisor + * to save and restore a 32-bit guest's DBGVCR) + */ + { .name = "DBGVCR32_EL2", .state = ARM_CP_STATE_AA64, + .opc0 = 2, .opc1 = 4, .crn = 0, .crm = 7, .opc2 = 0, + .access = PL2_RW, .accessfn = access_tda, + .type = ARM_CP_NOP }, /* Dummy MDCCINT_EL1, since we don't implement the Debug Communications * Channel but Linux may try to access this register. The 32-bit * alias is DBGDCCINT. |