qemu-virt64-aarch64/qemu-virt64-riscv支持SDL2

bsp/qemu-virt64-aarch64/applications/graphic.c

@@ -103,8 +103,7 @@ void graphic_thread(void *param)
         {
             int i = 0;
 
-            rt_memset(graphic_info.framebuffer, 0xff,
-                    graphic_info.width * graphic_info.height * graphic_info.bits_per_pixel);
+            rt_memset(graphic_info.framebuffer, 0xff, graphic_info.pitch * graphic_info.height);
 
             cur_last_points[0] = graphic_info.width / 2;
             cur_last_points[1] = graphic_info.height / 2;
@@ -207,7 +206,7 @@ void graphic_thread(void *param)
     }
 }
 
-int graphic_init(void)
+int graphic_test(void)
 {
     rt_thread_t graphic_tid = rt_thread_create("graphic work", graphic_thread, RT_NULL,
             GRAPHIC_THREAD_STACK_SIZE, GRAPHIC_THREAD_PRIORITY, GRAPHIC_THREAD_TIMESLICE);
@@ -221,8 +220,4 @@ int graphic_init(void)
 
     return -RT_ERROR;
 }
-#ifdef RT_USING_SMP
-INIT_ENV_EXPORT(graphic_init);
-#else
-MSH_CMD_EXPORT(graphic_init, Graphic initialize);
-#endif
+MSH_CMD_EXPORT(graphic_test, Graphic test);

components/drivers/virtio/virtio.c

@@ -6,6 +6,7 @@
  * Change Logs:
  * Date           Author       Notes
  * 2021-11-11     GuEe-GUI     the first version
+ * 2023-10-12     fangjianzhou support SDL2
  */
 
 #include <rtthread.h>
@@ -322,3 +323,127 @@ void virtio_fill_desc(struct virtio_device *dev, rt_uint32_t queue_index, rt_uin
     desc->flags = flags;
     desc->next = next;
 }
+
+#ifdef RT_USING_SMART
+#ifdef RT_USING_VIRTIO_GPU
+
+#include <virtio_gpu.h>
+#include "drivers/lcd.h"
+#include <dfs_file.h>
+#include <lwp_user_mm.h>
+
+static struct rt_device_graphic_info _graphic_info;
+static struct rt_device_rect_info    _rect_info;
+static struct rt_device              _fb        = {};
+static rt_device_t                   _gpu_dev   = RT_NULL;
+
+static rt_err_t fb_open(rt_device_t dev, rt_uint16_t oflag)
+{
+    return RT_EOK;
+}
+
+static rt_err_t fb_close(rt_device_t dev)
+{
+    return RT_EOK;
+}
+
+static rt_err_t fb_control(rt_device_t dev, int cmd, void *args)
+{
+    switch(cmd)
+    {
+        case FBIOPAN_DISPLAY:
+        {
+            rt_hw_cpu_dcache_clean(_graphic_info.framebuffer, _graphic_info.smem_len);
+            rt_device_control(_gpu_dev, RTGRAPHIC_CTRL_RECT_UPDATE, &_rect_info);
+            break;
+        }
+        case FBIOGET_FSCREENINFO:
+        {
+            struct fb_fix_screeninfo *info = (struct fb_fix_screeninfo *)args;
+            strncpy(info->id, "lcd", sizeof(info->id));
+            info->smem_len = _graphic_info.smem_len;
+            break;
+        }
+        case FBIOGET_VSCREENINFO:
+        {
+            struct fb_var_screeninfo *info = (struct fb_var_screeninfo *)args;
+            info->bits_per_pixel           = _graphic_info.bits_per_pixel;
+            info->xres                     = _graphic_info.width;
+            info->yres                     = _graphic_info.height;
+            break;
+        }
+        case RT_FIOMMAP2:
+        {
+            struct dfs_mmap2_args *mmap2 = (struct dfs_mmap2_args *)args;
+
+            if(mmap2)
+            {
+                mmap2->ret = lwp_map_user_phy(lwp_self(), RT_NULL, rt_kmem_v2p(_graphic_info.framebuffer), mmap2->length, 1);
+            }
+            else
+            {
+                return -EIO;
+            }
+
+            break;
+        }
+        default:
+            break;
+    }
+
+    return RT_EOK;
+}
+
+#ifdef RT_USING_DEVICE_OPS
+const static struct rt_device_ops fb_ops =
+{
+    RT_NULL,
+    fb_open,
+    fb_close,
+    RT_NULL,
+    RT_NULL,
+    fb_control
+};
+#endif
+
+static int fb_init()
+{
+    _gpu_dev = rt_device_find("virtio-gpu0");
+    RT_ASSERT(_gpu_dev);
+
+    if(_gpu_dev != RT_NULL && rt_device_open(_gpu_dev, 0) == RT_EOK)
+    {
+        rt_memset(&_graphic_info, 0, sizeof(_graphic_info));
+        rt_memset(&_rect_info, 0, sizeof(_rect_info));
+        rt_device_control(_gpu_dev, VIRTIO_DEVICE_CTRL_GPU_SET_PRIMARY, RT_NULL);
+        rt_device_control(_gpu_dev, VIRTIO_DEVICE_CTRL_GPU_CREATE_2D, (void *)RTGRAPHIC_PIXEL_FORMAT_RGB888);
+        rt_device_control(_gpu_dev, RTGRAPHIC_CTRL_GET_INFO, &_graphic_info);
+        _rect_info.x      = 0;
+        _rect_info.y      = 0;
+        _rect_info.width  = _graphic_info.width;
+        _rect_info.height = _graphic_info.height;
+        memset(_graphic_info.framebuffer, 0xff, _graphic_info.smem_len);
+        rt_device_control(_gpu_dev, RTGRAPHIC_CTRL_RECT_UPDATE, &_rect_info);
+    }
+
+    RT_ASSERT(!rt_device_find("fb0"));
+    _fb.type = RT_Device_Class_Miscellaneous;
+
+#ifdef RT_USING_DEVICE_OPS
+    _fb.ops        = &fb_ops;
+#else
+    _fb.init       = RT_NULL;
+    _fb.open       = fb_open;
+    _fb.close      = fb_close;
+    _fb.read       = RT_NULL;
+    _fb.write      = RT_NULL;
+    _fb.control    = fb_control;
+    _fb.user_data  = RT_NULL;
+#endif
+
+    rt_device_register(&_fb, "fb0", RT_DEVICE_FLAG_RDWR);
+    return RT_EOK;
+}
+INIT_COMPONENT_EXPORT(fb_init);
+#endif
+#endif