DragonOS-Community/DragonOS
4
1
Fork 0
mirror of https://github.com/DragonOS-Community/DragonOS.git synced 2025-06-18 16:26:31 +00:00
Code Issues Releases Wiki Activity

🆕 double buffer

Browse Source
This commit is contained in:
fslongjin
2022-05-20 19:37:26 +08:00
parent 59e847294a
commit 464837eb1a
11 changed files with 168 additions and 67 deletions
Download Patch File Download Diff File Expand all files Collapse all files

18
kernel/mm/mm.c
View File

@ -237,7 +237,7 @@ void mm_init()
// 初始化slab内存池
slab_init();
page_table_init();
init_frame_buffer();
// init_frame_buffer();
}
/**
@ -484,23 +484,7 @@ void page_table_init()
kinfo("Page table Initialized.");
}
/**
* @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
*/
void init_frame_buffer()
{
kinfo("Re-mapping VBE frame buffer...");
uint64_t global_CR3 = (uint64_t)get_CR3();
ul fb_virt_addr = SPECIAL_MEMOEY_MAPPING_VIRT_ADDR_BASE + FRAME_BUFFER_MAPPING_OFFSET;
ul fb_phys_addr = get_VBE_FB_phys_addr();
// mm_map_phys_addr(fb_virt_addr, fb_phys_addr, get_VBE_FB_length(), PAGE_KERNEL_PAGE | PAGE_PWT | PAGE_PCD);
mm_map_proc_page_table(global_CR3, true, fb_virt_addr, fb_phys_addr, get_VBE_FB_length() << 2, PAGE_KERNEL_PAGE | PAGE_PWT | PAGE_PCD, false);
set_pos_VBE_FB_addr((uint *)fb_virt_addr);
flush_tlb();
kinfo("VBE frame buffer successfully Re-mapped!");
}
/**
* @brief 将物理地址映射到页表的函数

6
kernel/mm/mm.h
View File

@ -348,12 +348,6 @@ typedef struct
*/
void page_table_init();
/**
* @brief VBE帧缓存区的地址重新映射
* 将帧缓存区映射到地址0xffff800008000000处
*/
void init_frame_buffer();
/**
* @brief 将物理地址映射到页表的函数
*