From 4781545512537effc97ffb07079076cf0819842c Mon Sep 17 00:00:00 2001
From: Huaqi Fang <578567190@qq.com>
Date: Tue, 28 Apr 2020 22:43:40 +0800
Subject: platform: Add Nuclei UX600 platform
* Nuclei UX600 is a 64-bit RISC-V core developed
by Nuclei System Technology, see https://nucleisys.com/product.php
* The ISA is configurable in hardware on your demand
Signed-off-by: Huaqi Fang <578567190@qq.com>
Reviewed-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
---
platform/nuclei/ux600/config.mk | 30 ++++++++
platform/nuclei/ux600/objects.mk | 11 +++
platform/nuclei/ux600/platform.c | 144 +++++++++++++++++++++++++++++++++++++++
3 files changed, 185 insertions(+)
create mode 100644 platform/nuclei/ux600/config.mk
create mode 100644 platform/nuclei/ux600/objects.mk
create mode 100644 platform/nuclei/ux600/platform.c
(limited to 'platform')
diff --git a/platform/nuclei/ux600/config.mk b/platform/nuclei/ux600/config.mk
new file mode 100644
index 0000000..0d30f29
--- /dev/null
+++ b/platform/nuclei/ux600/config.mk
@@ -0,0 +1,30 @@
+#
+# SPDX-License-Identifier: BSD-2-Clause
+#
+# Copyright (c) 2020 Nuclei Corporation or its affiliates.
+#
+# Authors:
+# lujun <lujun@nucleisys.com>
+# hqfang <578567190@qq.com>
+#
+
+# Compiler flags
+platform-cppflags-y =
+platform-cflags-y =
+platform-asflags-y =
+platform-ldflags-y =
+
+# Command for platform specific "make run"
+platform-runcmd = xl_spike \
+ $(build_dir)/platform/nuclei/ux600/firmware/fw_payload.elf
+
+# Blobs to build
+FW_TEXT_START=0x80000000
+FW_DYNAMIC=y
+FW_JUMP=y
+
+FW_JUMP_ADDR=0x80200000
+FW_JUMP_FDT_ADDR=0x88000000
+FW_PAYLOAD=y
+FW_PAYLOAD_OFFSET=0x200000
+FW_PAYLOAD_FDT_ADDR=0x88000000
diff --git a/platform/nuclei/ux600/objects.mk b/platform/nuclei/ux600/objects.mk
new file mode 100644
index 0000000..8c36c90
--- /dev/null
+++ b/platform/nuclei/ux600/objects.mk
@@ -0,0 +1,11 @@
+#
+# SPDX-License-Identifier: BSD-2-Clause
+#
+# Copyright (c) 2020 Nuclei Corporation or its affiliates.
+#
+# Authors:
+# lujun <lujun@nuclesys.com>
+# hqfang <578567190@qq.com>
+#
+
+platform-objs-y += platform.o
diff --git a/platform/nuclei/ux600/platform.c b/platform/nuclei/ux600/platform.c
new file mode 100644
index 0000000..6c8bf4d
--- /dev/null
+++ b/platform/nuclei/ux600/platform.c
@@ -0,0 +1,144 @@
+/*
+ * SPDX-License-Identifier: BSD-2-Clause
+ *
+ * Copyright (c) Nuclei Corporation or its affiliates.
+ *
+ * Authors:
+ * lujun <lujun@nucleisys.com>
+ * hqfang <578567190@qq.com>
+ */
+
+#include <libfdt.h>
+#include <sbi/riscv_asm.h>
+#include <sbi/riscv_io.h>
+#include <sbi/riscv_encoding.h>
+#include <sbi/sbi_console.h>
+#include <sbi/sbi_const.h>
+#include <sbi/sbi_platform.h>
+#include <sbi_utils/fdt/fdt_fixup.h>
+#include <sbi_utils/irqchip/plic.h>
+#include <sbi_utils/serial/sifive-uart.h>
+#include <sbi_utils/sys/clint.h>
+
+/* clang-format off */
+
+#define UX600_HART_COUNT 1
+
+#define UX600_SYS_CLK 1000000000
+
+/* Nuclei timer base address */
+#define UX600_NUCLEI_TIMER_ADDR 0x2000000
+/* The clint compatiable timer offset is 0x1000 against nuclei timer */
+#define UX600_CLINT_TIMER_ADDR (UX600_NUCLEI_TIMER_ADDR + 0x1000)
+
+#define UX600_PLIC_ADDR 0x8000000
+#define UX600_PLIC_NUM_SOURCES 0x35
+#define UX600_PLIC_NUM_PRIORITIES 7
+
+#define UX600_UART0_ADDR 0x10013000
+#define UX600_UART1_ADDR 0x10023000
+
+#define UX600_DEBUG_UART UX600_UART0_ADDR
+#define UX600_UART_BAUDRATE 115200
+
+/* clang-format on */
+
+static void ux600_modify_dt(void *fdt)
+{
+ fdt_fixups(fdt);
+}
+
+static int ux600_final_init(bool cold_boot)
+{
+ void *fdt;
+
+ if (!cold_boot)
+ return 0;
+
+ fdt = sbi_scratch_thishart_arg1_ptr();
+ ux600_modify_dt(fdt);
+
+ return 0;
+}
+
+static int ux600_console_init(void)
+{
+ return sifive_uart_init(UX600_DEBUG_UART, UX600_SYS_CLK,
+ UX600_UART_BAUDRATE);
+}
+
+static int ux600_irqchip_init(bool cold_boot)
+{
+ int rc;
+ u32 hartid = current_hartid();
+
+ if (cold_boot) {
+ rc = plic_cold_irqchip_init(UX600_PLIC_ADDR,
+ UX600_PLIC_NUM_SOURCES,
+ UX600_HART_COUNT);
+ if (rc)
+ return rc;
+ }
+
+ return plic_warm_irqchip_init(hartid, (hartid) ? (2 * hartid - 1) : 0,
+ (hartid) ? (2 * hartid) : -1);
+}
+
+static int ux600_ipi_init(bool cold_boot)
+{
+ int rc;
+
+ if (cold_boot) {
+ rc = clint_cold_ipi_init(UX600_CLINT_TIMER_ADDR, UX600_HART_COUNT);
+ if (rc)
+ return rc;
+ }
+
+ return clint_warm_ipi_init();
+}
+
+static int ux600_timer_init(bool cold_boot)
+{
+ int rc;
+
+ if (cold_boot) {
+ rc = clint_cold_timer_init(UX600_CLINT_TIMER_ADDR,
+ UX600_HART_COUNT, TRUE);
+ if (rc)
+ return rc;
+ }
+
+ return clint_warm_timer_init();
+}
+
+static int ux600_system_reset(u32 type)
+{
+ /* For now nothing to do. */
+ return 0;
+}
+
+const struct sbi_platform_operations platform_ops = {
+ .final_init = ux600_final_init,
+ .console_putc = sifive_uart_putc,
+ .console_getc = sifive_uart_getc,
+ .console_init = ux600_console_init,
+ .irqchip_init = ux600_irqchip_init,
+ .ipi_send = clint_ipi_send,
+ .ipi_clear = clint_ipi_clear,
+ .ipi_init = ux600_ipi_init,
+ .timer_value = clint_timer_value,
+ .timer_event_stop = clint_timer_event_stop,
+ .timer_event_start = clint_timer_event_start,
+ .timer_init = ux600_timer_init,
+ .system_reset = ux600_system_reset
+};
+
+const struct sbi_platform platform = {
+ .opensbi_version = OPENSBI_VERSION,
+ .platform_version = SBI_PLATFORM_VERSION(0x0U, 0x01U),
+ .name = "Nuclei UX600",
+ .features = SBI_PLATFORM_DEFAULT_FEATURES,
+ .hart_count = UX600_HART_COUNT,
+ .hart_stack_size = SBI_PLATFORM_DEFAULT_HART_STACK_SIZE,
+ .platform_ops_addr = (unsigned long)&platform_ops
+};
--
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