riscv:soc:jh7110: Add support jh7110 soc.

Add StarFive JH7110 soc to support RISC-V arch

Signed-off-by: yanhong.wang <yanhong.wang@starfivetech.com>

7 files changed, 180 insertions, 0 deletions

diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
index ec651fe0a4..52e99e03d3 100644
--- a/arch/riscv/Kconfig
+++ b/arch/riscv/Kconfig
@@ -71,6 +71,7 @@ source "arch/riscv/cpu/ax25/Kconfig"
 source "arch/riscv/cpu/fu540/Kconfig"
 source "arch/riscv/cpu/fu740/Kconfig"
 source "arch/riscv/cpu/generic/Kconfig"
+source "arch/riscv/cpu/jh7110/Kconfig"
 
 # architecture-specific options below
 
diff --git a/arch/riscv/cpu/jh7110/Kconfig b/arch/riscv/cpu/jh7110/Kconfig
new file mode 100644
index 0000000000..6755696b4f
--- /dev/null
+++ b/arch/riscv/cpu/jh7110/Kconfig
@@ -0,0 +1,50 @@
+# SPDX-License-Identifier: GPL-2.0+
+#
+# Copyright (C) 2022 StarFive, Inc
+
+config STARFIVE_JH7110
+	bool
+	select ARCH_EARLY_INIT_R
+	select SUPPORT_SPL
+	imply CPU
+	imply CPU_RISCV
+	imply RISCV_TIMER if (RISCV_SMODE || SPL_RISCV_SMODE)
+	imply SPL_SIFIVE_CLINT
+	imply CMD_CPU
+	imply SPL_CPU
+	imply SPL_OPENSBI
+	imply SPL_LOAD_FIT
+	imply SMP
+	imply SIFIVE_CACHE
+	imply SIFIVE_CCACHE
+	imply MII
+	imply MMC
+	imply MMC_SPI
+	imply MMC_BROKEN_CD
+	imply CMD_MMC
+	imply DM_GPIO
+	imply STARFIVE_GPIO
+	imply CMD_GPIO
+	imply MISC
+	imply STARFIVE_OTP
+	imply DM_PWM
+	imply DM_I2C
+	imply SYS_I2C_OCORES
+	imply CLK_JH7110
+
+choice
+	prompt "JH7110 GMAC Speed"
+	depends on STARFIVE_JH7110
+	default FPGA_GMAC_SPEED10
+	help
+	  choice JH7110 GMAC speed.
+	  (GMAC only works well on 10M/duple, for FPGA board.)
+
+	config FPGA_GMAC_SPEED10
+		bool "GMAC works on 10M mode"
+	config FPGA_GMAC_SPEED100
+		bool "GMAC works on 100M mode"
+	config FPGA_GMAC_SPEED_AUTO
+		bool "GMAC works on auto mode"
+
+endchoice
diff --git a/arch/riscv/cpu/jh7110/Makefile b/arch/riscv/cpu/jh7110/Makefile
new file mode 100644
index 0000000000..1d13975876
--- /dev/null
+++ b/arch/riscv/cpu/jh7110/Makefile
@@ -0,0 +1,10 @@
+# SPDX-License-Identifier: GPL-2.0+
+#
+# Copyright (C) 2022 StarFive, Inc
+
+ifeq ($(CONFIG_SPL_BUILD),y)
+obj-y += spl.o
+else
+obj-y += dram.o
+obj-y += cpu.o
+endif
diff --git a/arch/riscv/cpu/jh7110/cpu.c b/arch/riscv/cpu/jh7110/cpu.c
new file mode 100644
index 0000000000..f13c18942f
--- /dev/null
+++ b/arch/riscv/cpu/jh7110/cpu.c
@@ -0,0 +1,22 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2018, Bin Meng <bmeng.cn@gmail.com>
+ */
+
+#include <irq_func.h>
+#include <asm/cache.h>
+
+/*
+ * cleanup_before_linux() is called just before we call linux
+ * it prepares the processor for linux
+ *
+ * we disable interrupt and caches.
+ */
+int cleanup_before_linux(void)
+{
+	disable_interrupts();
+
+	cache_flush();
+
+	return 0;
+}
diff --git a/arch/riscv/cpu/jh7110/dram.c b/arch/riscv/cpu/jh7110/dram.c
new file mode 100644
index 0000000000..1dc77efeca
--- /dev/null
+++ b/arch/riscv/cpu/jh7110/dram.c
@@ -0,0 +1,38 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2018, Bin Meng <bmeng.cn@gmail.com>
+ */
+
+#include <common.h>
+#include <fdtdec.h>
+#include <init.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();
+}
+
+ulong board_get_usable_ram_top(ulong total_size)
+{
+#ifdef CONFIG_64BIT
+	/*
+	 * Ensure that we run from first 4GB so that all
+	 * addresses used by U-Boot are 32bit addresses.
+	 *
+	 * This in-turn ensures that 32bit DMA capable
+	 * devices work fine because DMA mapping APIs will
+	 * provide 32bit DMA addresses only.
+	 */
+	if (gd->ram_top > SZ_4G)
+		return SZ_4G;
+#endif
+	return gd->ram_top;
+}
diff --git a/arch/riscv/cpu/jh7110/spl.c b/arch/riscv/cpu/jh7110/spl.c
new file mode 100644
index 0000000000..cb6ef2fda5
--- /dev/null
+++ b/arch/riscv/cpu/jh7110/spl.c
@@ -0,0 +1,45 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2022 Starfive, Inc.
+ * Author:	yanhong <yanhong.wang@starfivetech.com>
+ *
+ */
+
+#include <dm.h>
+#include <log.h>
+#include <asm/csr.h>
+
+#define CSR_U74_FEATURE_DISABLE	0x7c1
+
+int spl_soc_init(void)
+{
+	int ret;
+	struct udevice *dev;
+
+	/* DDR init */
+	ret = uclass_get_device(UCLASS_RAM, 0, &dev);
+	if (ret) {
+		debug("DRAM init failed: %d\n", ret);
+		return ret;
+	}
+
+	/*flash init*/
+	ret = uclass_get_device(UCLASS_SPI_FLASH, 0, &dev);
+	if (ret) {
+		debug("SPI init failed: %d\n", ret);
+		return ret;
+	}
+	return 0;
+}
+
+void harts_early_init(void)
+{
+	/*
+	 * Feature Disable CSR
+	 *
+	 * Clear feature disable CSR to '0' to turn on all features for
+	 * each core. This operation must be in M-mode.
+	 */
+	if (CONFIG_IS_ENABLED(RISCV_MMODE))
+		csr_write(CSR_U74_FEATURE_DISABLE, 0);
+}
diff --git a/arch/riscv/include/asm/arch-jh7110/spl.h b/arch/riscv/include/asm/arch-jh7110/spl.h
new file mode 100644
index 0000000000..0756020809
--- /dev/null
+++ b/arch/riscv/include/asm/arch-jh7110/spl.h
@@ -0,0 +1,14 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2022 Starfive, Inc.
+ * Author:	yanhong <yanhong.wang@starfivetech.com>
+ *
+ */
+
+#ifndef _SPL_STARFIVE_H
+#define _SPL_STARFIVE_H
+
+int spl_soc_init(void);
+
+#endif /* _SPL_STARFIVE_H */
+