riscv: cpu: cv1800b: Add support for cv1800b SoC
Add Sophgo cv1800b SoC to support RISC-V arch.
Signed-off-by: Kongyang Liu <seashell11234455@gmail.com>
Reviewed-by: Leo Yu-Chi Liang <ycliang@andestech.com>
diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
index 1819db1..d70c7e3 100644
--- a/arch/riscv/Kconfig
+++ b/arch/riscv/Kconfig
@@ -93,6 +93,7 @@
# platform-specific options below
source "arch/riscv/cpu/andesv5/Kconfig"
+source "arch/riscv/cpu/cv1800b/Kconfig"
source "arch/riscv/cpu/fu540/Kconfig"
source "arch/riscv/cpu/fu740/Kconfig"
source "arch/riscv/cpu/generic/Kconfig"
diff --git a/arch/riscv/cpu/cv1800b/Kconfig b/arch/riscv/cpu/cv1800b/Kconfig
new file mode 100644
index 0000000..7225b12
--- /dev/null
+++ b/arch/riscv/cpu/cv1800b/Kconfig
@@ -0,0 +1,12 @@
+# SPDX-License-Identifier: GPL-2.0+
+#
+# Copyright (c) 2024, Kongyang Liu <seashell11234455@gmail.com>
+
+config SOPHGO_CV1800B
+ bool
+ select ARCH_EARLY_INIT_R
+ select SYS_CACHE_SHIFT_6
+ imply CPU
+ imply CPU_RISCV
+ imply RISCV_TIMER
+ imply CMD_CPU
diff --git a/arch/riscv/cpu/cv1800b/Makefile b/arch/riscv/cpu/cv1800b/Makefile
new file mode 100644
index 0000000..da12e0f
--- /dev/null
+++ b/arch/riscv/cpu/cv1800b/Makefile
@@ -0,0 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0+
+#
+# Copyright (c) 2024, Kongyang Liu <seashell11234455@gmail.com>
+
+obj-y += dram.o
+obj-y += cpu.o
diff --git a/arch/riscv/cpu/cv1800b/cpu.c b/arch/riscv/cpu/cv1800b/cpu.c
new file mode 100644
index 0000000..233a6a3
--- /dev/null
+++ b/arch/riscv/cpu/cv1800b/cpu.c
@@ -0,0 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (c) 2024, Kongyang Liu <seashell11234455@gmail.com>
+ */
+
+int cleanup_before_linux(void)
+{
+ return 0;
+}
diff --git a/arch/riscv/cpu/cv1800b/dram.c b/arch/riscv/cpu/cv1800b/dram.c
new file mode 100644
index 0000000..91007c0
--- /dev/null
+++ b/arch/riscv/cpu/cv1800b/dram.c
@@ -0,0 +1,21 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2018, Bin Meng <bmeng.cn@gmail.com>
+ */
+
+#include <fdtdec.h>
+#include <init.h>
+#include <asm/global_data.h>
+#include <linux/sizes.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+int dram_init(void)
+{
+ return fdtdec_setup_mem_size_base();
+}
+
+int dram_init_banksize(void)
+{
+ return fdtdec_setup_memory_banksize();
+}
diff --git a/board/sophgo/milkv_duo/Kconfig b/board/sophgo/milkv_duo/Kconfig
index 2a458f2..040a748 100644
--- a/board/sophgo/milkv_duo/Kconfig
+++ b/board/sophgo/milkv_duo/Kconfig
@@ -7,7 +7,7 @@
default "sophgo"
config SYS_CPU
- default "generic"
+ default "cv1800b"
config SYS_CONFIG_NAME
default "milkv_duo"
@@ -23,6 +23,6 @@
config BOARD_SPECIFIC_OPTIONS
def_bool y
- select GENERIC_RISCV
+ select SOPHGO_CV1800B
endif