Merge remote-tracking branch 'remotes/pmaydell/tags/pull-target-arm-20180209' into staging

target-arm queue:
 * Support M profile derived exceptions on exception entry and exit
 * Implement AArch64 v8.2 crypto insns (SHA-512, SHA-3, SM3, SM4)
 * Implement working i.MX6 SD controller
 * Various devices preparatory to i.MX7 support
 * Preparatory patches for SVE emulation
 * v8M: Fix bug in implementation of 'TT' insn
 * Give useful error if user tries to use userspace GICv3 with KVM

# gpg: Signature made Fri 09 Feb 2018 11:01:23 GMT
# gpg:                using RSA key 3C2525ED14360CDE
# gpg: Good signature from "Peter Maydell <peter.maydell@linaro.org>"
# gpg:                 aka "Peter Maydell <pmaydell@gmail.com>"
# gpg:                 aka "Peter Maydell <pmaydell@chiark.greenend.org.uk>"
# Primary key fingerprint: E1A5 C593 CD41 9DE2 8E83  15CF 3C25 25ED 1436 0CDE

* remotes/pmaydell/tags/pull-target-arm-20180209: (30 commits)
  hw/core/generic-loader: Allow PC to be set on command line
  target/arm/translate.c: Fix missing 'break' for TT insns
  target/arm/kvm: gic: Prevent creating userspace GICv3 with KVM
  target/arm: Add SVE state to TB->FLAGS
  target/arm: Add ZCR_ELx
  target/arm: Add SVE to migration state
  target/arm: Add predicate registers for SVE
  target/arm: Expand vector registers for SVE
  hw/arm: Move virt's PSCI DT fixup code to arm/boot.c
  usb: Add basic code to emulate Chipidea USB IP
  i.MX: Add implementation of i.MX7 GPR IP block
  i.MX: Add i.MX7 GPT variant
  i.MX: Add code to emulate GPCv2 IP block
  i.MX: Add code to emulate i.MX7 SNVS IP-block
  i.MX: Add code to emulate i.MX2 watchdog IP block
  i.MX: Add code to emulate i.MX7 CCM, PMU and ANALOG IP blocks
  hw: i.MX: Convert i.MX6 to use TYPE_IMX_USDHC
  sdhci: Add i.MX specific subtype of SDHCI
  target/arm: enable user-mode SHA-3, SM3, SM4 and SHA-512 instruction support
  target/arm: implement SM4 instructions
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

1 files changed, 83 insertions, 0 deletions

diff --git a/hw/misc/imx7_snvs.c b/hw/misc/imx7_snvs.c
new file mode 100644
index 0000000000..4df482b282
--- /dev/null
+++ b/hw/misc/imx7_snvs.c
@@ -0,0 +1,83 @@
+/*
+ * IMX7 Secure Non-Volatile Storage
+ *
+ * Copyright (c) 2018, Impinj, Inc.
+ *
+ * Author: Andrey Smirnov <andrew.smirnov@gmail.com>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ *
+ * Bare minimum emulation code needed to support being able to shut
+ * down linux guest gracefully.
+ */
+
+#include "qemu/osdep.h"
+#include "hw/misc/imx7_snvs.h"
+#include "qemu/log.h"
+#include "sysemu/sysemu.h"
+
+static uint64_t imx7_snvs_read(void *opaque, hwaddr offset, unsigned size)
+{
+    return 0;
+}
+
+static void imx7_snvs_write(void *opaque, hwaddr offset,
+                            uint64_t v, unsigned size)
+{
+    const uint32_t value = v;
+    const uint32_t mask  = SNVS_LPCR_TOP | SNVS_LPCR_DP_EN;
+
+    if (offset == SNVS_LPCR && ((value & mask) == mask)) {
+        qemu_system_shutdown_request(SHUTDOWN_CAUSE_GUEST_SHUTDOWN);
+    }
+}
+
+static const struct MemoryRegionOps imx7_snvs_ops = {
+    .read = imx7_snvs_read,
+    .write = imx7_snvs_write,
+    .endianness = DEVICE_NATIVE_ENDIAN,
+    .impl = {
+        /*
+         * Our device would not work correctly if the guest was doing
+         * unaligned access. This might not be a limitation on the real
+         * device but in practice there is no reason for a guest to access
+         * this device unaligned.
+         */
+        .min_access_size = 4,
+        .max_access_size = 4,
+        .unaligned = false,
+    },
+};
+
+static void imx7_snvs_init(Object *obj)
+{
+    SysBusDevice *sd = SYS_BUS_DEVICE(obj);
+    IMX7SNVSState *s = IMX7_SNVS(obj);
+
+    memory_region_init_io(&s->mmio, obj, &imx7_snvs_ops, s,
+                          TYPE_IMX7_SNVS, 0x1000);
+
+    sysbus_init_mmio(sd, &s->mmio);
+}
+
+static void imx7_snvs_class_init(ObjectClass *klass, void *data)
+{
+    DeviceClass *dc = DEVICE_CLASS(klass);
+
+    dc->desc  = "i.MX7 Secure Non-Volatile Storage Module";
+}
+
+static const TypeInfo imx7_snvs_info = {
+    .name          = TYPE_IMX7_SNVS,
+    .parent        = TYPE_SYS_BUS_DEVICE,
+    .instance_size = sizeof(IMX7SNVSState),
+    .instance_init = imx7_snvs_init,
+    .class_init    = imx7_snvs_class_init,
+};
+
+static void imx7_snvs_register_type(void)
+{
+    type_register_static(&imx7_snvs_info);
+}
+type_init(imx7_snvs_register_type)