AST2700 CPU is ARM Cortex-A35 which is 64 bits.
Add TARGET_AARCH64 to build this machine.

According to the design of ast2700, it has a bootmcu(riscv-32) which
is used for executing SPL.
Then, CPUs(cortex-a35) execute u-boot, kernel and rofs.

Currently, qemu not support emulate two CPU architectures
at the same machine. Therefore, qemu will only support
to emulate CPU(cortex-a35) side for ast2700

Signed-off-by: Troy Lee <troy_lee@aspeedtech.com>
Signed-off-by: Jamin Lin <jamin_lin@aspeedtech.com>
---
 hw/arm/aspeed.c | 32 ++++++++++++++++++++++++++++++++
 1 file changed, 32 insertions(+)

diff --git a/hw/arm/aspeed.c b/hw/arm/aspeed.c
index 8854581ca8..4544026d14 100644
--- a/hw/arm/aspeed.c
+++ b/hw/arm/aspeed.c
@@ -178,6 +178,12 @@ struct AspeedMachineState {
 #define AST2600_EVB_HW_STRAP1 0x000000C0
 #define AST2600_EVB_HW_STRAP2 0x00000003
 
+#ifdef TARGET_AARCH64
+/* AST2700 evb hardware value */
+#define AST2700_EVB_HW_STRAP1 0x000000C0
+#define AST2700_EVB_HW_STRAP2 0x00000003
+#endif
+
 /* Tacoma hardware value */
 #define TACOMA_BMC_HW_STRAP1  0x00000000
 #define TACOMA_BMC_HW_STRAP2  0x00000040
@@ -1588,6 +1594,26 @@ static void aspeed_minibmc_machine_ast1030_evb_class_init(ObjectClass *oc,
     aspeed_machine_class_init_cpus_defaults(mc);
 }
 
+#ifdef TARGET_AARCH64
+static void aspeed_machine_ast2700_evb_class_init(ObjectClass *oc, void *data)
+{
+    MachineClass *mc = MACHINE_CLASS(oc);
+    AspeedMachineClass *amc = ASPEED_MACHINE_CLASS(oc);
+
+    mc->desc = "Aspeed AST2700 EVB (Cortex-A35)";
+    amc->soc_name  = "ast2700-a0";
+    amc->hw_strap1 = AST2700_EVB_HW_STRAP1;
+    amc->hw_strap2 = AST2700_EVB_HW_STRAP2;
+    amc->fmc_model = "w25q01jvq";
+    amc->spi_model = "w25q512jv";
+    amc->num_cs    = 2;
+    amc->macs_mask = ASPEED_MAC0_ON | ASPEED_MAC1_ON | ASPEED_MAC2_ON;
+    amc->uart_default = ASPEED_DEV_UART12;
+    mc->default_ram_size = 1 * GiB;
+    aspeed_machine_class_init_cpus_defaults(mc);
+}
+#endif
+
 static void aspeed_machine_qcom_dc_scm_v1_class_init(ObjectClass *oc,
                                                      void *data)
 {
@@ -1711,6 +1737,12 @@ static const TypeInfo aspeed_machine_types[] = {
         .name           = MACHINE_TYPE_NAME("ast1030-evb"),
         .parent         = TYPE_ASPEED_MACHINE,
         .class_init     = aspeed_minibmc_machine_ast1030_evb_class_init,
+#ifdef TARGET_AARCH64
+    }, {
+        .name          = MACHINE_TYPE_NAME("ast2700-evb"),
+        .parent        = TYPE_ASPEED_MACHINE,
+        .class_init    = aspeed_machine_ast2700_evb_class_init,
+#endif
     }, {
         .name          = TYPE_ASPEED_MACHINE,
         .parent        = TYPE_MACHINE,
-- 
2.25.1