Add support for architecture sparc-v8 and soc bm3803.

Author: GFWisshit

bsp/bm3803/.config

@@ -0,0 +1,38 @@
+mainmenu "RT-Thread Configuration"
+
+config BSP_DIR
+    string
+    option env="BSP_ROOT"
+    default "."
+
+config RTT_DIR
+    string
+    option env="RTT_ROOT"
+    default "../.."
+    
+# you can change the RTT_ROOT default "../.." to your rtthread_root,
+# example: default "F:/git_repositories/rt-thread"
+
+config PKGS_DIR
+    string
+    option env="PKGS_ROOT"
+    default "packages"
+    
+config ENV_DIR
+    string
+    option env="ENV_ROOT"
+    default "/"
+
+source "$RTT_DIR/Kconfig"
+source "$PKGS_DIR/Kconfig"
+
+config SOC_BM3803
+    bool
+    select RT_USING_COMPONENTS_INIT
+    select RT_USING_USER_MAIN
+    default y
+
+config RT_USING_UART1
+    bool "Using RT_USING_UART1"
+    default y
+

bsp/bm3803/Kconfig

@@ -0,0 +1,14 @@
+# for module compiling
+import os
+Import('RTT_ROOT')
+
+cwd = str(Dir('#'))
+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/bm3803/SConscript

@@ -0,0 +1,31 @@
+import os
+import sys
+import rtconfig
+
+if os.getenv('RTT_ROOT'):
+    RTT_ROOT = os.getenv('RTT_ROOT')
+else:
+    RTT_ROOT = os.path.normpath(os.getcwd() + '/../..')
+
+sys.path = sys.path + [os.path.join(RTT_ROOT, 'tools')]
+from building import *
+
+TARGET = 'rtthread-bm3803.' + 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.CFLAGS,
+	AR = rtconfig.AR, ARFLAGS = '-rc',
+	LINK = rtconfig.LINK, LINKFLAGS = rtconfig.LFLAGS)
+env.PrependENVPath('PATH', rtconfig.EXEC_PATH)
+
+Export('RTT_ROOT')
+Export('rtconfig')
+
+# prepare building environment
+objs = PrepareBuilding(env, RTT_ROOT)
+
+# make a building
+DoBuilding(TARGET, objs)

bsp/bm3803/SConstruct

@@ -0,0 +1,11 @@
+Import('RTT_ROOT')
+Import('rtconfig')
+from building import *
+
+cwd     = os.path.join(str(Dir('#')), 'applications')
+src	= Glob('*.c')
+CPPPATH = [cwd, str(Dir('#'))]
+
+group = DefineGroup('Applications', src, depend = [''], CPPPATH = CPPPATH)
+
+Return('group')

bsp/bm3803/applications/SConscript

@@ -0,0 +1,58 @@
+/*
+ * File      : board.c
+ * This file is part of RT-Thread RTOS
+ * COPYRIGHT (C) 2020, Shenzhen Academy of Aerospace Technology
+ *
+ * The license and distribution terms for this file may be
+ * found in the file LICENSE in this distribution or at
+ * http://www.rt-thread.org/license/LICENSE
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2020-10-16     Dystopia     the first version
+ */
+
+#include <rthw.h>
+#include <rtthread.h>
+#include <finsh.h>
+
+#include "board.h"
+#include <interrupt.h>
+
+extern int __bss_end;
+
+static void rt_hw_timer_isr(int vector, void* param)
+{
+	rt_tick_increase();
+	/* timer interrupt cleared by hardware */
+}
+
+int rt_hw_timer_init(void)
+{
+	unsigned int counter = 1000000 / RT_TICK_PER_SECOND;
+	volatile struct lregs *regs = (struct lregs*)PREGS;
+    
+    regs->scalercnt = CPU_FREQ / 1000000 - 1;
+    regs->scalerload = CPU_FREQ / 1000000 - 1;
+    regs->timercnt2 = counter - 1;
+    regs->timerload2 = counter - 1;
+
+	rt_hw_interrupt_install(TIMER2_TT, rt_hw_timer_isr, RT_NULL, "tick");
+	rt_hw_interrupt_umask(TIMER2_TT);
+
+	/* start timer */
+	regs->timerctrl2 = 0x7;
+
+    return 0;
+}
+INIT_BOARD_EXPORT(rt_hw_timer_init);
+
+/**
+ * This function will initialize beaglebone board
+ */
+void rt_hw_board_init(void)
+{
+	rt_system_heap_init((void*)&__bss_end, (void*)&__bss_end + 0x01000000);
+    rt_components_board_init();
+	rt_console_set_device(RT_CONSOLE_DEVICE_NAME);
+}

bsp/bm3803/applications/board.c

@@ -0,0 +1,24 @@
+/*
+ * File      : board.h
+ * This file is part of RT-Thread RTOS
+ * COPYRIGHT (C) 2020, Shenzhen Academy of Aerospace Technology
+ *
+ * The license and distribution terms for this file may be
+ * found in the file LICENSE in this distribution or at
+ * http://www.rt-thread.org/license/LICENSE
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2020-10-16     Dystopia     the first version
+ */
+
+#ifndef __BOARD_H__
+#define __BOARD_H__
+
+#include <bm3803.h>
+
+#define CPU_FREQ 90000000
+
+void rt_hw_board_init(void);
+
+#endif

bsp/bm3803/applications/board.h

@@ -0,0 +1,9 @@
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+int main(void)
+{
+    printf("hello rt-thread\n");
+    return 0;
+}

bsp/bm3803/applications/main.c

@@ -0,0 +1,90 @@
+OUTPUT_ARCH(sparc)
+SECTIONS
+{
+    . = 0x40000000;
+
+    __text_start = .;
+    .text :
+    {
+        *(.vectors)
+        *(.text)
+        *(.text.*)
+
+        /* section information for finsh shell */
+        . = ALIGN(4);
+        __fsymtab_start = .;
+        KEEP(*(FSymTab))
+        __fsymtab_end = .;
+        . = ALIGN(4);
+        __vsymtab_start = .;
+        KEEP(*(VSymTab))
+        __vsymtab_end = .;
+        . = ALIGN(4);	
+
+        /* section information for modules */
+        . = ALIGN(4);
+        __rtmsymtab_start = .;
+        KEEP(*(RTMSymTab))
+        __rtmsymtab_end = .;
+
+        /* section information for initialization */
+        . = ALIGN(4);
+        __rt_init_start = .;
+        KEEP(*(SORT(.rti_fn*)))
+        __rt_init_end = .;
+    } =0
+    __text_end = .;
+
+    __rodata_start = .;
+    .rodata   : { *(.rodata) *(.rodata.*) }
+    __rodata_end = .;
+
+    . = ALIGN(4);
+    .ctors :
+    {
+        PROVIDE(__ctors_start__ = .);
+        KEEP(*(SORT(.ctors.*)))
+        KEEP(*(.ctors))
+        PROVIDE(__ctors_end__ = .);
+    }
+
+    .dtors :
+    {
+        PROVIDE(__dtors_start__ = .);
+        KEEP(*(SORT(.dtors.*)))
+        KEEP(*(.dtors))
+        PROVIDE(__dtors_end__ = .);
+    }
+
+    . = ALIGN(8);
+    __data_start = .;
+    .data :
+    {
+        *(.data)
+        *(.data.*)
+    }
+    __data_end = .;
+
+    . = ALIGN(8);
+    __bss_start = .;
+    .bss       :
+    {
+    *(.bss)
+    *(.bss.*)
+    *(COMMON)
+    . = ALIGN(4);
+    }
+    . = ALIGN(4);
+    __bss_end = .;
+
+    /* Stabs debugging sections.  */
+    .stab 0 : { *(.stab) }
+    .stabstr 0 : { *(.stabstr) }
+    .stab.excl 0 : { *(.stab.excl) }
+    .stab.exclstr 0 : { *(.stab.exclstr) }
+    .stab.index 0 : { *(.stab.index) }
+    .stab.indexstr 0 : { *(.stab.indexstr) }
+    .comment 0 : { *(.comment) }
+
+    _end = .;
+}

bsp/bm3803/bm3803.lds

@@ -0,0 +1,22 @@
+import copy
+Import('RTT_ROOT')
+Import('rtconfig')
+from building import *
+
+cwd     = GetCurrentDir()
+src	= Glob('*.c')
+
+# remove no need file.
+if GetDepend('RT_USING_LWIP') == False:
+    src_need_remove = ['dm9000.c'] # need remove file list.
+    SrcRemove(src, src_need_remove)
+
+if GetDepend('RT_USING_DFS') == False:
+    src_need_remove = ['sd.c'] # need remove file list.
+    SrcRemove(src, src_need_remove)
+
+CPPPATH = [cwd]
+
+group = DefineGroup('Drivers', src, depend = [''], CPPPATH = CPPPATH)
+
+Return('group')