target-arm: Add ARMCPU fields for GIC CPU i/f config

Add fields to the ARMCPU structure to allow CPU classes to
specify the configurable aspects of their GIC CPU interface.
In particular, the virtualization support allows different
values for number of list registers, priority bits and
preemption bits.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Acked-by: Alistair Francis <alistair.francis@xilinx.com>
Message-id: 1483977924-14522-6-git-send-email-peter.maydell@linaro.org

diff --git a/target/arm/cpu.h b/target/arm/cpu.h
index fa094989395f40cbece947d0edd1aad5fca88ad5..16c7c10bfbb38db29c6d707b702e2a1e36711f06 100644 (file)
--- a/target/arm/cpu.h
+++ b/target/arm/cpu.h
@@ -662,6 +662,11 @@ struct ARMCPU {
     uint32_t dcz_blocksize;
     uint64_t rvbar;
 
+    /* Configurable aspects of GIC cpu interface (which is part of the CPU) */
+    int gic_num_lrs; /* number of list registers */
+    int gic_vpribits; /* number of virtual priority bits */
+    int gic_vprebits; /* number of virtual preemption bits */
+
     ARMELChangeHook *el_change_hook;
     void *el_change_hook_opaque;
 };

diff --git a/target/arm/cpu64.c b/target/arm/cpu64.c
index 549cb1ee93cc8ed9ce3e19baaa07cd13b022d4cb..73c7f318ecde15d0ef6b60e000e2a64d7273f30a 100644 (file)
--- a/target/arm/cpu64.c
+++ b/target/arm/cpu64.c
@@ -147,6 +147,9 @@ static void aarch64_a57_initfn(Object *obj)
     cpu->ccsidr[1] = 0x201fe012; /* 48KB L1 icache */
     cpu->ccsidr[2] = 0x70ffe07a; /* 2048KB L2 cache */
     cpu->dcz_blocksize = 4; /* 64 bytes */
+    cpu->gic_num_lrs = 4;
+    cpu->gic_vpribits = 5;
+    cpu->gic_vprebits = 5;
     define_arm_cp_regs(cpu, cortex_a57_a53_cp_reginfo);
 }
 
@@ -201,6 +204,9 @@ static void aarch64_a53_initfn(Object *obj)
     cpu->ccsidr[1] = 0x201fe00a; /* 32KB L1 icache */
     cpu->ccsidr[2] = 0x707fe07a; /* 1024KB L2 cache */
     cpu->dcz_blocksize = 4; /* 64 bytes */
+    cpu->gic_num_lrs = 4;
+    cpu->gic_vpribits = 5;
+    cpu->gic_vprebits = 5;
     define_arm_cp_regs(cpu, cortex_a57_a53_cp_reginfo);
 }