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Code Issues Releases Wiki Activity

添加early ioremap支持 (#492)

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* 使用early io remap来映射早期的vesa缓冲区
This commit is contained in:
LoGin
2024-01-18 00:09:36 +08:00
committed by GitHub
parent d8e29bffee
commit c75ef4e212
4 changed files with 103 additions and 18 deletions
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7
kernel/src/driver/video/fbdev/vesafb.rs
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@ -38,6 +38,7 @@ use crate::{
},
include::bindings::bindings::{
multiboot2_get_Framebuffer_info, multiboot2_iter, multiboot_tag_framebuffer_info_t,
FRAME_BUFFER_MAPPING_OFFSET,
},
init::{boot_params, initcall::INITCALL_DEVICE},
libs::{
@ -650,7 +651,11 @@ pub fn vesafb_early_init() -> Result<VirtAddr, SystemError> {
boottime_screen_info.lfb_size =
(width * height * ((fb_info.framebuffer_bpp as u32 + 7) / 8)) as usize;
let buf_vaddr = VirtAddr::new(0xffff800003200000);
// let buf_vaddr = VirtAddr::new(0xffff800003200000);
let buf_vaddr = VirtAddr::new(
crate::include::bindings::bindings::SPECIAL_MEMOEY_MAPPING_VIRT_ADDR_BASE as usize
+ FRAME_BUFFER_MAPPING_OFFSET as usize,
);
boottime_screen_info.lfb_virt_base = Some(buf_vaddr);
let init_text = "Video driver to map.\n\0";