board: starfive: add StarFive VisionFive v2 board support
Add board support for StarFive VisionFive v2.
Signed-off-by: Yanhong Wang <yanhong.wang@starfivetech.com>
Tested-by: Conor Dooley <conor.dooley@microchip.com>
diff --git a/board/starfive/visionfive2/MAINTAINERS b/board/starfive/visionfive2/MAINTAINERS
new file mode 100644
index 0000000..c536908
--- /dev/null
+++ b/board/starfive/visionfive2/MAINTAINERS
@@ -0,0 +1,7 @@
+STARFIVE JH7110 VISIONFIVE2 BOARD
+M: startfive
+S: Maintained
+F: arch/riscv/include/asm/arch-jh7110/
+F: board/starfive/visionfive2/
+F: include/configs/starfive-visionfive2.h
+F: configs/starfive_visionfive2_defconfig
diff --git a/board/starfive/visionfive2/Makefile b/board/starfive/visionfive2/Makefile
new file mode 100644
index 0000000..66c854d
--- /dev/null
+++ b/board/starfive/visionfive2/Makefile
@@ -0,0 +1,7 @@
+# SPDX-License-Identifier: GPL-2.0+
+#
+# Copyright (C) 2022 StarFive Technology Co., Ltd.
+#
+
+obj-y := starfive_visionfive2.o
+obj-$(CONFIG_SPL_BUILD) += spl.o
diff --git a/board/starfive/visionfive2/spl.c b/board/starfive/visionfive2/spl.c
new file mode 100644
index 0000000..db0b4cb
--- /dev/null
+++ b/board/starfive/visionfive2/spl.c
@@ -0,0 +1,87 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2022 StarFive Technology Co., Ltd.
+ * Author: Yanhong Wang<yanhong.wang@starfivetech.com>
+ */
+
+#include <common.h>
+#include <asm/arch/regs.h>
+#include <asm/arch/spl.h>
+#include <asm/io.h>
+#include <log.h>
+#include <spl.h>
+
+#define JH7110_CLK_CPU_ROOT_OFFSET 0x0U
+#define JH7110_CLK_CPU_ROOT_SHIFT 24
+#define JH7110_CLK_CPU_ROOT_MASK GENMASK(29, 24)
+
+int spl_board_init_f(void)
+{
+ int ret;
+
+ ret = spl_soc_init();
+ if (ret) {
+ debug("JH7110 SPL init failed: %d\n", ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+u32 spl_boot_device(void)
+{
+ u32 mode;
+
+ mode = in_le32(JH7110_BOOT_MODE_SELECT_REG)
+ & JH7110_BOOT_MODE_SELECT_MASK;
+ switch (mode) {
+ case 0:
+ return BOOT_DEVICE_SPI;
+
+ case 1:
+ return BOOT_DEVICE_MMC2;
+
+ case 2:
+ return BOOT_DEVICE_MMC1;
+
+ case 3:
+ return BOOT_DEVICE_UART;
+
+ default:
+ debug("Unsupported boot device 0x%x.\n", mode);
+ return BOOT_DEVICE_NONE;
+ }
+}
+
+void board_init_f(ulong dummy)
+{
+ int ret;
+
+ ret = spl_early_init();
+ if (ret)
+ panic("spl_early_init() failed: %d\n", ret);
+
+ riscv_cpu_setup(NULL, NULL);
+ preloader_console_init();
+
+ /* Set the parent clock of cpu_root clock to pll0,
+ * it must be initialized here
+ */
+ clrsetbits_le32(JH7110_SYS_CRG + JH7110_CLK_CPU_ROOT_OFFSET,
+ JH7110_CLK_CPU_ROOT_MASK,
+ BIT(JH7110_CLK_CPU_ROOT_SHIFT));
+
+ ret = spl_board_init_f();
+ if (ret) {
+ debug("spl_board_init_f init failed: %d\n", ret);
+ return;
+ }
+}
+
+#if CONFIG_IS_ENABLED(SPL_LOAD_FIT)
+int board_fit_config_name_match(const char *name)
+{
+ /* boot using first FIT config */
+ return 0;
+}
+#endif
diff --git a/board/starfive/visionfive2/starfive_visionfive2.c b/board/starfive/visionfive2/starfive_visionfive2.c
new file mode 100644
index 0000000..613fe79
--- /dev/null
+++ b/board/starfive/visionfive2/starfive_visionfive2.c
@@ -0,0 +1,40 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2022 StarFive Technology Co., Ltd.
+ * Author: Yanhong Wang<yanhong.wang@starfivetech.com>
+ */
+
+#include <common.h>
+#include <asm/io.h>
+#include <cpu_func.h>
+#include <linux/bitops.h>
+
+#define JH7110_L2_PREFETCHER_BASE_ADDR 0x2030000
+#define JH7110_L2_PREFETCHER_HART_OFFSET 0x2000
+
+/* enable U74-mc hart1~hart4 prefetcher */
+static void enable_prefetcher(void)
+{
+ u8 hart;
+ u32 *reg;
+
+ /* JH7110 use U74MC CORE IP, it include five cores(one S7 and four U7),
+ * but only U7 cores support prefetcher configuration
+ */
+ for (hart = 1; hart < 5; hart++) {
+ reg = (void *)(u64)(JH7110_L2_PREFETCHER_BASE_ADDR
+ + hart * JH7110_L2_PREFETCHER_HART_OFFSET);
+
+ mb(); /* memory barrier */
+ setbits_le32(reg, 0x1);
+ mb(); /* memory barrier */
+ }
+}
+
+int board_init(void)
+{
+ enable_caches();
+ enable_prefetcher();
+
+ return 0;
+}