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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>
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docs/platform/nuclei_ux600.md
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docs/platform/nuclei_ux600.md
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Nuclei UX600 Platform
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=====================
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The **Nuclei UX600** is a 64-bit RISC-V Core which is capable of running Linux.
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> Nuclei UX600: single core, pipeline as single-issue and 6~9 variable stages, in-order dispatch and out-of-order write-back, running up to >1.2GHz
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To build the platform-specific library and firmware images, provide the
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*PLATFORM=nuclei/ux600* parameter to the top level `make` command.
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Platform Options
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----------------
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The *Nuclei UX600* platform does not have any platform-specific options.
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Building Nuclei UX600 Platform
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------------------------------
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```
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make PLATFORM=nuclei/ux600 clean all
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```
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platform/nuclei/ux600/config.mk
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platform/nuclei/ux600/config.mk
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#
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# SPDX-License-Identifier: BSD-2-Clause
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#
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# Copyright (c) 2020 Nuclei Corporation or its affiliates.
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#
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# Authors:
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# lujun <lujun@nucleisys.com>
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# hqfang <578567190@qq.com>
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#
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# Compiler flags
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platform-cppflags-y =
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platform-cflags-y =
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platform-asflags-y =
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platform-ldflags-y =
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# Command for platform specific "make run"
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platform-runcmd = xl_spike \
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$(build_dir)/platform/nuclei/ux600/firmware/fw_payload.elf
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# Blobs to build
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FW_TEXT_START=0x80000000
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FW_DYNAMIC=y
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FW_JUMP=y
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FW_JUMP_ADDR=0x80200000
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FW_JUMP_FDT_ADDR=0x88000000
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FW_PAYLOAD=y
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FW_PAYLOAD_OFFSET=0x200000
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FW_PAYLOAD_FDT_ADDR=0x88000000
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platform/nuclei/ux600/objects.mk
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platform/nuclei/ux600/objects.mk
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#
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# SPDX-License-Identifier: BSD-2-Clause
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#
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# Copyright (c) 2020 Nuclei Corporation or its affiliates.
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#
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# Authors:
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# lujun <lujun@nuclesys.com>
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# hqfang <578567190@qq.com>
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#
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platform-objs-y += platform.o
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platform/nuclei/ux600/platform.c
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platform/nuclei/ux600/platform.c
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/*
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* SPDX-License-Identifier: BSD-2-Clause
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*
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* Copyright (c) Nuclei Corporation or its affiliates.
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*
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* Authors:
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* lujun <lujun@nucleisys.com>
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* hqfang <578567190@qq.com>
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*/
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#include <libfdt.h>
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#include <sbi/riscv_asm.h>
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#include <sbi/riscv_io.h>
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#include <sbi/riscv_encoding.h>
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#include <sbi/sbi_console.h>
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#include <sbi/sbi_const.h>
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#include <sbi/sbi_platform.h>
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#include <sbi_utils/fdt/fdt_fixup.h>
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#include <sbi_utils/irqchip/plic.h>
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#include <sbi_utils/serial/sifive-uart.h>
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#include <sbi_utils/sys/clint.h>
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/* clang-format off */
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#define UX600_HART_COUNT 1
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#define UX600_SYS_CLK 1000000000
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/* Nuclei timer base address */
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#define UX600_NUCLEI_TIMER_ADDR 0x2000000
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/* The clint compatiable timer offset is 0x1000 against nuclei timer */
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#define UX600_CLINT_TIMER_ADDR (UX600_NUCLEI_TIMER_ADDR + 0x1000)
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#define UX600_PLIC_ADDR 0x8000000
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#define UX600_PLIC_NUM_SOURCES 0x35
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#define UX600_PLIC_NUM_PRIORITIES 7
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#define UX600_UART0_ADDR 0x10013000
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#define UX600_UART1_ADDR 0x10023000
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#define UX600_DEBUG_UART UX600_UART0_ADDR
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#define UX600_UART_BAUDRATE 115200
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/* clang-format on */
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static void ux600_modify_dt(void *fdt)
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{
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fdt_fixups(fdt);
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}
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static int ux600_final_init(bool cold_boot)
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{
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void *fdt;
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if (!cold_boot)
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return 0;
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fdt = sbi_scratch_thishart_arg1_ptr();
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ux600_modify_dt(fdt);
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return 0;
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}
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static int ux600_console_init(void)
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{
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return sifive_uart_init(UX600_DEBUG_UART, UX600_SYS_CLK,
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UX600_UART_BAUDRATE);
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}
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static int ux600_irqchip_init(bool cold_boot)
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{
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int rc;
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u32 hartid = current_hartid();
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if (cold_boot) {
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rc = plic_cold_irqchip_init(UX600_PLIC_ADDR,
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UX600_PLIC_NUM_SOURCES,
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UX600_HART_COUNT);
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if (rc)
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return rc;
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}
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return plic_warm_irqchip_init(hartid, (hartid) ? (2 * hartid - 1) : 0,
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(hartid) ? (2 * hartid) : -1);
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}
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static int ux600_ipi_init(bool cold_boot)
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{
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int rc;
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if (cold_boot) {
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rc = clint_cold_ipi_init(UX600_CLINT_TIMER_ADDR, UX600_HART_COUNT);
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if (rc)
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return rc;
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}
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return clint_warm_ipi_init();
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}
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static int ux600_timer_init(bool cold_boot)
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{
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int rc;
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if (cold_boot) {
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rc = clint_cold_timer_init(UX600_CLINT_TIMER_ADDR,
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UX600_HART_COUNT, TRUE);
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if (rc)
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return rc;
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}
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return clint_warm_timer_init();
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}
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static int ux600_system_reset(u32 type)
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{
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/* For now nothing to do. */
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return 0;
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}
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const struct sbi_platform_operations platform_ops = {
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.final_init = ux600_final_init,
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.console_putc = sifive_uart_putc,
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.console_getc = sifive_uart_getc,
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.console_init = ux600_console_init,
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.irqchip_init = ux600_irqchip_init,
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.ipi_send = clint_ipi_send,
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.ipi_clear = clint_ipi_clear,
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.ipi_init = ux600_ipi_init,
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.timer_value = clint_timer_value,
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.timer_event_stop = clint_timer_event_stop,
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.timer_event_start = clint_timer_event_start,
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.timer_init = ux600_timer_init,
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.system_reset = ux600_system_reset
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};
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const struct sbi_platform platform = {
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.opensbi_version = OPENSBI_VERSION,
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.platform_version = SBI_PLATFORM_VERSION(0x0U, 0x01U),
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.name = "Nuclei UX600",
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.features = SBI_PLATFORM_DEFAULT_FEATURES,
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.hart_count = UX600_HART_COUNT,
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.hart_stack_size = SBI_PLATFORM_DEFAULT_HART_STACK_SIZE,
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.platform_ops_addr = (unsigned long)&platform_ops
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};
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