[PATCH v1] target/riscv:Add support for RV64 Sifive U74 CPU

[TravisYang <zhiyuan.plct@isrc.iscas.ac.cn>]

Add a CPU entry for the RV64 SiFive U74 CPU .It is available in
single-core and dual-core configurations,and features advanced power
management and AIA compliance.More details can be found at
https://www.sifive.com/document-file/sifive-essential-u7-product-brief
 

Signed-off-by: TravisYang <zhiyuan.plct@isrc.iscas.ac.cn>
---
 target/riscv/cpu-qom.h |  1 +
 target/riscv/cpu.c     | 44 ++++++++++++++++++++++++++++++++++++------
 2 files changed, 39 insertions(+), 6 deletions(-)

diff --git a/target/riscv/cpu-qom.h b/target/riscv/cpu-qom.h
index 1fc8140190..f17390d072 100644
--- a/target/riscv/cpu-qom.h
+++ b/target/riscv/cpu-qom.h
@@ -57,6 +57,7 @@
 #define TYPE_RISCV_CPU_XIANGSHAN_NANHU  RISCV_CPU_TYPE_NAME("xiangshan-nanhu")
 #define TYPE_RISCV_CPU_XIANGSHAN_KMH    RISCV_CPU_TYPE_NAME("xiangshan-kunminghu")
 #define TYPE_RISCV_CPU_THEAD_C910       RISCV_CPU_TYPE_NAME("thead-c910")
+#define TYPE_RISCV_CPU_SIFIVE_U74       RISCV_CPU_TYPE_NAME("sifive-u74")
 #define TYPE_RISCV_CPU_HOST             RISCV_CPU_TYPE_NAME("host")
 
 OBJECT_DECLARE_CPU_TYPE(RISCVCPU, RISCVCPUClass, RISCV_CPU)
diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c
index ea9e6eb6a5..aa2fc59804 100644
--- a/target/riscv/cpu.c
+++ b/target/riscv/cpu.c
@@ -3284,10 +3284,10 @@ static const TypeInfo riscv_cpu_type_infos[] = {
         .cfg.pmp = true,
         .cfg.max_satp_mode = VM_1_10_SV48,
     ),
-
+
 	DEFINE_RISCV_CPU(TYPE_RISCV_CPU_THEAD_C910, TYPE_RISCV_VENDOR_CPU,
 		.misa_mxl_max = MXL_RV64,
-       .misa_ext = RVG | RVC | RVS | RVU,
+       .misa_ext = RVG | RVC | RVS | RVU,
 		.priv_spec = PRIV_VERSION_1_12_0,
 
 		.cfg.ext_zcf = true,
@@ -3297,9 +3297,9 @@ static const TypeInfo riscv_cpu_type_infos[] = {
 		.cfg.ext_zfhmin = true,
 
 		.cfg.mmu = true,
-       .cfg.ext_xtheadba = true,
-       .cfg.ext_xtheadbb = true,
-       .cfg.ext_xtheadbs = true,
+       .cfg.ext_xtheadba = true,
+       .cfg.ext_xtheadbb = true,
+       .cfg.ext_xtheadbs = true,
 	 	.cfg.ext_xtheadcmo = true,
 		.cfg.ext_xtheadcondmov = true,
 		.cfg.ext_xtheadfmemidx = true,
@@ -3328,9 +3328,41 @@ static const TypeInfo riscv_cpu_type_infos[] = {
 		.cfg.max_satp_mode = VM_1_10_SV39,
 #ifndef CONFIG_USER_ONLY
 		.custom_csrs = th_csr_list,
-#endif
+#endif
 	),
 
+    DEFINE_RISCV_CPU(TYPE_RISCV_CPU_SIFIVE_U74, TYPE_RISCV_CPU_SIFIVE_U,
+       .misa_mxl_max = MXL_RV64,
+       .misa_ext = RVI | RVM | RVA | RVF | RVD | RVC | RVS | RVU | RVH,
+       .priv_spec = PRIV_VERSION_1_12_0,
+
+       .cfg.mmu = true,
+       .cfg.pmp_regions = 16,
+
+       .cfg.ext_zba = true,
+       .cfg.ext_zbb = true,
+       .cfg.ext_zbs = true,
+       .cfg.ext_zic64b = true,
+
+       .cfg.ext_zicbom = true,
+       .cfg.ext_zicboz = true,
+       .cfg.ext_zicbop = true,
+
+       .cfg.ext_svinval = true,
+       .cfg.ext_svadu = true,
+
+       .cfg.ext_zfh = true,
+       .cfg.ext_zfhmin = true,
+       .cfg.ext_zfa = true,
+
+       .cfg.ext_smaia = true,
+       .cfg.ext_ssaia = true,
+
+       .cfg.ext_sscofpmf = true,
+       .cfg.ext_sstc = true,
+
+       .cfg.max_satp_mode = VM_1_10_SV39,
+    ),
 
 #if defined(CONFIG_TCG) && !defined(CONFIG_USER_ONLY)
     DEFINE_RISCV_CPU(TYPE_RISCV_CPU_BASE128, TYPE_RISCV_DYNAMIC_CPU,
-- 
2.34.1