bsp/spacemit/k1:first version

Author: Ironside

bsp/spacemit/k1/.config

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+mainmenu "RT-Thread SpacemiT K1 Configuration"
+
+BSP_DIR := .
+RTT_DIR := ../../..
+PKGS_DIR := packages
+
+source "$(RTT_DIR)/Kconfig"
+osource "$PKGS_DIR/Kconfig"
+#rsource "board/Kconfig"
+rsource "drivers/Kconfig"
+ 
+config SOC_SPACEMIT_K1
+    bool
+    select ARCH_RISCV64
+    select RT_USING_COMPONENTS_INIT
+    select RT_USING_USER_MAIN
+    default y
+
+choice BOARD_NAME
+    prompt "Select Your Board"
+    default BOARD_MUSE_PI_PRO
+    
+    config BOARD_MUSE_PI_PRO
+        bool "SpacemiT MUSE Pi Pro"
+        select SOC_SPACEMIT_K1
+        default y
+endchoice
+
+config ENABLE_FPU
+    bool "Enable FPU"
+    select ARCH_RISCV_FPU
+    default y
+
+config __STACKSIZE__
+    int "stack size for interrupt"
+    default 16384

bsp/spacemit/k1/.defconfig

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+# for module compiling
+import os
+from building import *
+
+objs = []
+
+# ------------------- libcpu -------------------
+RTT_ROOT = os.path.normpath(os.path.join(GetCurrentDir(), '..', '..', '..'))
+
+common64_path = os.path.join(RTT_ROOT, 'libcpu/risc-v/common64')
+libcpu_src = [
+    os.path.join(common64_path, 'sbi.c'),
+    os.path.join(common64_path, 'trap.c'),
+    os.path.join(common64_path, 'cpuport.c'),
+    os.path.join(common64_path, 'context_gcc.S'),
+    os.path.join(common64_path, 'interrupt_gcc.S'),
+    os.path.join(common64_path, 'startup_gcc.S'),
+]
+
+k1_libcpu_path = os.path.join(RTT_ROOT, 'libcpu/risc-v/spacemit/x60')
+libcpu_src += Glob(os.path.join(k1_libcpu_path, '*.c'))
+
+libcpu_cpppath = [
+    common64_path,
+    k1_libcpu_path,
+    os.path.join(RTT_ROOT, 'libcpu/risc-v/vector/rvv-1.0'),
+]
+
+group = DefineGroup('libcpu', libcpu_src, depend=[''], CPPPATH=libcpu_cpppath)
+objs += group
+
+
+# ------------------- bsp -------------------
+cwd = GetCurrentDir()
+list = os.listdir(cwd)
+
+for d in list:
+    path = os.path.join(cwd, d)
+    if os.path.isfile(os.path.join(path, 'SConscript')):
+        objs = objs + SConscript(os.path.join(d, 'SConscript'))
+
+
+Return('objs')

bsp/spacemit/k1/Kconfig

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+import os
+import sys
+import rtconfig
+
+from rtconfig import RTT_ROOT
+
+sys.path = sys.path + [os.path.join(RTT_ROOT, 'tools')]
+from building import *
+
+TARGET = 'rtthread.' + rtconfig.TARGET_EXT
+
+DefaultEnvironment(tools=[])
+env = Environment(tools = ['mingw'],
+    AS = rtconfig.AS, ASFLAGS = rtconfig.AFLAGS,
+    CC = rtconfig.CC, CFLAGS = rtconfig.CFLAGS,
+    CXX = rtconfig.CXX, CXXFLAGS = rtconfig.CXXFLAGS,
+    AR = rtconfig.AR, ARFLAGS = '-rc',
+    LINK = rtconfig.LINK, LINKFLAGS = rtconfig.LFLAGS)
+env.PrependENVPath('PATH', rtconfig.EXEC_PATH)
+env['ASCOM'] = env['ASPPCOM']
+
+Export('RTT_ROOT')
+Export('rtconfig')
+
+
+# prepare building environment
+objs = PrepareBuilding(env, RTT_ROOT, has_libcpu = True)
+
+stack_size = 8192
+stack_lds = open('link_stacksize.lds', 'w')
+if GetDepend('__STACKSIZE__'): 
+    stack_size = GetDepend('__STACKSIZE__')
+stack_lds.write('__STACKSIZE__ = %d;' % stack_size)
+stack_lds.close()
+
+DoBuilding(TARGET, objs)
+
+Clean(TARGET, 'link.lds.generated')
+Clean(TARGET, 'build')

bsp/spacemit/k1/README.md

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+from building import *
+
+cwd     = GetCurrentDir()
+src	= Glob('*.c')
+CPPPATH = [cwd]
+
+group = DefineGroup('Applications', src, depend = [''], CPPPATH = CPPPATH)
+
+Return('group')

bsp/spacemit/k1/SConscript

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+/*
+ * Copyright (c) 2006-2020, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author            Notes
+ * 2025-10-15     IronsideZhang     first version
+ */
+
+#include <rtthread.h>
+#include <rthw.h>
+#include <stdio.h>
+#include <string.h>
+
+int main(void)
+{
+    printf("Hello RISC-V\n");
+
+    return 0;
+}

bsp/spacemit/k1/SConstruct

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+from building import *
+
+cwd     = GetCurrentDir()
+src     = Glob('*.c') + Glob('*.cpp') + Glob('*.S')
+CPPPATH = [cwd]
+
+group = DefineGroup('Board', src, depend = [''], CPPPATH = CPPPATH)
+
+Return('group')

bsp/spacemit/k1/applications/SConscript

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+/*
+ * Copyright (c) 2006-2025, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author            Notes
+ * 2025-10-15     IronsideZhang     first version
+ */
+
+#include <rthw.h>
+#include <rtthread.h>
+#include "board.h"
+#include "drv_uart.h"
+
+/* Defined in link.lds */
+extern unsigned int __bss_end;
+
+#define HEAP_BEGIN      ((void *)&__bss_end)
+#define HEAP_END        ((void *)((rt_size_t)HEAP_BEGIN + KERNEL_HEAP_SIZE))
+
+static void __rt_assert_handler(const char *ex_string, const char *func, rt_size_t line)
+{
+    rt_kprintf("\n(%s) assertion failed at function:%s, line number:%d \n", ex_string, func, line);
+    while (1);
+}
+
+/* C entry point for the primary CPU, called from startup_gcc.S */
+void primary_cpu_entry(void)
+{
+    rt_hw_interrupt_disable();
+    rt_assert_set_hook(__rt_assert_handler);
+    entry(); // Call RT-Thread kernel entry
+}
+
+/* This function is called by the kernel before the scheduler starts */
+void rt_hw_board_init(void)
+{
+#ifdef RT_USING_HEAP
+    /* Initialize the system heap */
+    rt_system_heap_init(HEAP_BEGIN, HEAP_END);
+#endif
+
+    /*
+     * Initialize hardware interrupts:
+     */
+    rt_hw_interrupt_init();
+
+    /*
+     * Initialize the UART driver for console output.
+     * This function will handle pinctrl and sysctl initialization internally.
+     */
+    rt_hw_uart_init();
+
+#ifdef RT_USING_CONSOLE
+    /* Set the console device */
+    rt_console_set_device(RT_CONSOLE_DEVICE_NAME);
+#endif
+
+#ifdef RT_USING_COMPONENTS_INIT
+    /* Initialize auto-initialized components */
+    rt_components_board_init();
+#endif
+
+}