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fslongjin
2022-06-02 14:20:53 +08:00
parent b97aaee746
commit d64ddfa0b6
12 changed files with 243 additions and 299 deletions
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6
kernel/driver/video/video.c
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@ -20,7 +20,7 @@ struct screen_info_t
/**
* @brief VBE帧缓存区的地址重新映射
* 将帧缓存区映射到地址0xffff800003000000处
* 将帧缓存区映射到地址SPECIAL_MEMOEY_MAPPING_VIRT_ADDR_BASE处
*/
void init_frame_buffer(bool level)
{
@ -42,7 +42,7 @@ void init_frame_buffer(bool level)
sc_info.height = info.framebuffer_height;
sc_info.length = 1UL * sc_info.width * sc_info.height;
mm_map_proc_page_table(global_CR3, true, sc_info.fb_vaddr, sc_info.fb_paddr, get_VBE_FB_length() << 2, PAGE_KERNEL_PAGE | PAGE_PWT | PAGE_PCD, false);
mm_map_proc_page_table(global_CR3, true, sc_info.fb_vaddr, sc_info.fb_paddr, get_VBE_FB_length() << 2, PAGE_KERNEL_PAGE | PAGE_PWT | PAGE_PCD, false, true);
set_pos_VBE_FB_addr((uint *)sc_info.fb_vaddr);
}
else // 高级初始化，增加双缓冲区的支持
@ -50,7 +50,7 @@ void init_frame_buffer(bool level)
// 申请双重缓冲区
struct Page *p = alloc_pages(ZONE_NORMAL, PAGE_2M_ALIGN(sc_info.length << 2) / PAGE_2M_SIZE, 0);
sc_info.double_fb_vaddr = (uint64_t)phys_2_virt(p->addr_phys);
mm_map_proc_page_table(global_CR3, true, sc_info.double_fb_vaddr, p->addr_phys, PAGE_2M_ALIGN(sc_info.length << 2), PAGE_KERNEL_PAGE, false);
mm_map_proc_page_table(global_CR3, true, sc_info.double_fb_vaddr, p->addr_phys, PAGE_2M_ALIGN(sc_info.length << 2), PAGE_KERNEL_PAGE, false, true);
// 将原有的数据拷贝到double buffer里面
memcpy((void *)sc_info.double_fb_vaddr, (void *)sc_info.fb_vaddr, sc_info.length << 2);