[bsp] add k230

bsp/k230/.gitignore

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+#Build & install directories
+build/
+packages/
+install/
+
+rtthread.*
+
+__pycache__
+.config.old

bsp/k230/Kconfig

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+mainmenu "RT-Thread Project Configuration"
+
+config BSP_DIR
+    string
+    option env="BSP_ROOT"
+    default "."
+
+config RTT_DIR
+    string
+    option env="RTT_ROOT"
+    default "../../rt-thread"
+
+config PKGS_DIR
+    string
+    option env="PKGS_ROOT"
+    default "packages"
+
+source "$RTT_DIR/Kconfig"
+source "$PKGS_DIR/Kconfig"
+rsource "board/Kconfig"
+
+config BOARD_fpgac908
+    bool
+    select ARCH_RISCV64
+    select RT_USING_COMPONENTS_INIT
+    select RT_USING_USER_MAIN
+    select RT_USING_CACHE
+	select ARCH_MM_MMU
+    select ARCH_RISCV_FPU_D
+    select ARCH_REMAP_KERNEL if RT_USING_SMART
+    default y
+
+config __STACKSIZE__
+    int "stack size for interrupt"
+    default 4096
+
+config C908_PLIC_PHY_ADDR
+    int "PLIC base address"
+    default 0xF00000000
+
+config BSP_ROOTFS_TYPE_CROMFS
+    bool "Use CROMFS as ROOTFS"
+    select RT_USING_DFS_CROMFS
+    select PKG_USING_ZLIB
+    select PKG_USING_ZLIB_LATEST_VERSION
+    default y

bsp/k230/README.md

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+# rt-smart canaan porting
+
+## 下载依赖的软件包
+
+在软件包无需变更的情况下只须执行一次
+```
+source ~/.env/env.sh
+pkgs --update
+```
+
+## 将根文件系统编译进内核
+
+为了方便测试，这里将根文件系统制作成CROMFS格式转换成C代码编译进内核。
+
+1. 在 https://github.com/RT-Thread/userapps 页面下载riscv64预编译镜像
+2. 解压后将其中的ext4.img挂载到一个目录中
+```
+sudo mount ext4.img dir
+```
+3. 删除其中一些不必要的文件以减小内核体积
+```
+du -ha                              # 查看文件大小
+sudo rm -rf dir/www dir/usr/share/fonts dir/tc
+
+```
+4. 生成cromfs文件
+工具位于 https://github.com/RT-Thread/userapps/tree/main/tools/cromfs
+```
+sudo ./cromfs-tool-x64 dir crom.img ./            # 将生成的cromfs_data.c放入applications目录
+```
+
+## 编译
+
+```
+export RTT_EXEC_PATH=/mnt/e/tools/riscv64gc/bin # 你自己的编译器路径
+
+scons -j8
+```

bsp/k230/SConscript

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+# for module compiling
+import os
+from building import *
+
+cwd = GetCurrentDir()
+objs = []
+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/k230/SConstruct

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+import os
+import sys
+import rtconfig
+
+from rtconfig import RTT_ROOT
+import sys
+
+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, CCFLAGS = 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 = False)
+
+stack_size = 4096
+
+stack_lds = open('link_stacksize.lds', 'w')
+if GetDepend('__STACKSIZE__'): stack_size = GetDepend('__STACKSIZE__')
+stack_lds.write('__STACKSIZE__ = %d;' % stack_size)
+stack_lds.close()
+
+# make a building
+DoBuilding(TARGET, objs)

bsp/k230/applications/SConscript

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

bsp/k230/applications/main.c

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+/*
+ * Copyright (c) 2006-2021, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ */
+
+#include <rtthread.h>
+#include <rthw.h>
+#include <stdio.h>
+#include <string.h>
+
+int main(void)
+{
+    printf("Hello RISC-V\n");
+
+    return 0;
+}

bsp/k230/applications/mnt.c

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+#include <rtthread.h>
+
+#ifdef RT_USING_DFS
+#include <dfs_fs.h>
+
+rt_weak uint8_t *cromfs_get_partition_data(uint32_t *len)
+{
+    return RT_NULL;
+}
+
+static int mnt_cromfs(void)
+{
+    uint32_t length = 0;
+    uint8_t *data = cromfs_get_partition_data(&length);
+    int ret = -1;
+
+    if (data && length)
+    {
+        ret = dfs_mount(NULL, "/", "crom", 0, data);
+    }
+
+    return ret;
+}
+
+int mnt_init(void)
+{
+    rt_err_t ret;
+
+    ret = mnt_cromfs();
+    if (ret != RT_EOK)
+    {
+        rt_kprintf("CromFS mount failed!\n");
+        return ret;
+    }
+
+    mkdir("/dev/shm", 0x777);
+
+    if (dfs_mount(RT_NULL, "/dev/shm", "tmp", 0, 0) != 0)
+    {
+        rt_kprintf("Dir /dev/shm mount failed!\n");
+    }
+
+#ifdef BSP_SD_SDIO_DEV
+    while (mmcsd_wait_cd_changed(100) != MMCSD_HOST_PLUGED)
+        ;
+
+    if (dfs_mount(BSP_SD_MNT_DEVNAME, "/mnt", "elm", 0, 0) != 0)
+    {
+        rt_kprintf("Dir /mnt mount failed!\n");
+    }
+#endif
+
+    rt_kprintf("file system initialization done!\n");
+
+    return 0;
+}
+INIT_ENV_EXPORT(mnt_init);
+#endif

bsp/k230/board/Kconfig

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+menu "Drivers Configuration"
+
+    menuconfig BSP_USING_SDIO
+        bool "Enable SDIO"
+        select RT_USING_SDIO
+        default n
+
+        if BSP_USING_SDIO
+            config BSP_USING_SDIO0
+                bool "Enable SDIO0"
+                default n
+
+                if BSP_USING_SDIO0
+                    config BSP_SDIO0_EMMC
+                    bool "Enable eMMC"
+                    default y
+
+                    config BSP_SDIO0_1V8
+                    bool "Enable 1.8V"
+                    default y
+                endif
+
+            config BSP_USING_SDIO1
+                bool "Enable SDIO1"
+                default y
+
+            config BSP_SD_SDIO_DEV
+                int "SDIO device SdCard on"
+                range 0 1
+                default 1
+
+            config BSP_SD_MNT_DEVNAME
+                string "The name of the SD-BlkDev to be mounted"
+                default "sd13"
+        endif
+
+
+endmenu

bsp/k230/board/SConscript

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+# RT-Thread building script for component
+
+from building import *
+
+cwd     = GetCurrentDir()
+src     = Glob('*.c')
+CPPPATH = [cwd]
+
+group = DefineGroup('Drivers', src, depend = [''], CPPPATH = CPPPATH)
+
+objs = [group]
+
+list = os.listdir(cwd)
+
+for item in list:
+    if os.path.isfile(os.path.join(cwd, item, 'SConscript')):
+        objs = objs + SConscript(os.path.join(item, 'SConscript'))
+
+Return('objs')