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kos-acpi: set_framebuffer()

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git-svn-id: svn://kolibrios.org@6252 a494cfbc-eb01-0410-851d-a64ba20cac60
This commit is contained in:
Sergey Semyonov (Serge) 2016-02-19 04:46:39 +00:00
parent 3f4201dc21
commit 227be33173
5 changed files with 44 additions and 105 deletions
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2
kernel/branches/Kolibri-acpi/const.inc
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@ -685,7 +685,7 @@ struct display_t
height dd ?
bits_per_pixel dd ?
vrefresh dd ?
lfb dd ?
current_lfb dd ?
lfb_pitch dd ?
win_map_lock RWSEM

1
kernel/branches/Kolibri-acpi/core/exports.inc
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@ -56,6 +56,7 @@ __exports:
\
get_display, 'GetDisplay', \
set_screen, 'SetScreen', \
set_framebuffer, 'SetFramebuffer', \ ; gcc fastcall
window._.get_rect, 'GetWindowRect', \ ; gcc fastcall
pci_api_drv, 'PciApi', \
pci_read8, 'PciRead8', \ ; stdcall

89
kernel/branches/Kolibri-acpi/core/memory.inc
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@ -404,95 +404,6 @@ proc create_trampoline_pgmap
ret
endp
align 4
proc init_LFB
locals
pg_count dd ?
endl
cmp dword [LFBAddress], -1
jne @f
mov [BOOT_VARS+BOOT_MTRR], byte 2
; max VGA=640*480*4=1228800 bytes
; + 32*640*4=81920 bytes for mouse pointer
stdcall alloc_pages, ((1228800+81920)/4096)
push eax
call alloc_page
stdcall map_page_table, LFB_BASE, eax
pop eax
or eax, PG_UWR
mov ebx, LFB_BASE
; max VGA=640*480*4=1228800 bytes
; + 32*640*4=81920 bytes for mouse pointer
mov ecx, (1228800+81920)/4096
call commit_pages
mov [LFBAddress], dword LFB_BASE
ret
@@:
test [SCR_MODE], word 0100000000000000b
jnz @f
mov [BOOT_VARS+BOOT_MTRR], byte 2
ret
@@:
call init_mtrr
mov edx, LFB_BASE
mov esi, [LFBAddress]
mov edi, 0x00C00000
mov dword [exp_lfb+4], edx
shr edi, 12
mov [pg_count], edi
shr edi, 10
bt [cpu_caps], CAPS_PSE
jnc .map_page_tables
or esi, PDE_LARGE+PG_UWR
mov edx, sys_proc+PROC.pdt_0+(LFB_BASE shr 20)
@@:
mov [edx], esi
add edx, 4
add esi, 0x00400000
dec edi
jnz @B
bt [cpu_caps], CAPS_PGE
jnc @F
or dword [sys_proc+PROC.pdt_0+(LFB_BASE shr 20)], PG_GLOBAL
@@:
mov dword [LFBAddress], LFB_BASE
mov eax, cr3 ;flush TLB
mov cr3, eax
ret
.map_page_tables:
@@:
call alloc_page
stdcall map_page_table, edx, eax
add edx, 0x00400000
dec edi
jnz @B
mov eax, [LFBAddress]
mov edi, page_tabs + (LFB_BASE shr 10)
or eax, PG_GLOBAL+PG_UWR
and eax, [pte_valid_mask]
mov ecx, [pg_count]
cld
@@:
stosd
add eax, 0x1000
loop @B
mov dword [LFBAddress], LFB_BASE
mov eax, cr3 ;flush TLB
mov cr3, eax
ret
endp
align 4
proc new_mem_resize stdcall, new_size:dword

12
kernel/branches/Kolibri-acpi/kernel.asm
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@ -534,6 +534,11 @@ high_code:
mov ax, tss0
ltr ax
mov eax, sys_proc
list_init eax
add eax, PROC.thr_list
list_init eax
call init_video
call init_mtrr
mov [LFBAddress], LFB_BASE
@ -625,14 +630,9 @@ high_code:
mov esi, boot_setostask
call boot_log
mov eax, sys_proc
lea edi, [eax+PROC.heap_lock]
mov edi, sys_proc+PROC.heap_lock
mov ecx, (PROC.ht_free-PROC.heap_lock)/4
list_init eax
add eax, PROC.thr_list
list_init eax
xor eax, eax
cld
rep stosd

45
kernel/branches/Kolibri-acpi/video/framebuffer.inc
View File

@ -203,14 +203,41 @@ init_video:
align 4
set_framebuffer:
mov edx, LFB_BASE shr 22
mov eax, [ecx+FRB.pde]
mov dword [master_tab+edx*4], eax
mov eax, [ecx+FRB.pde+4]
mov dword [master_tab+edx*4+4], eax
mov eax, [ecx+FRB.pde+8]
mov dword [master_tab+edx*4+8], eax
mov eax, [ecx+FRB.pde+12]
mov dword [master_tab+edx*4+12], eax
push esi
push edi
lea esi, [ecx+FRB.pde]
mov eax, sys_proc
pushfd
cli
mov [_display.current_lfb], ecx
.patch_pde:
lea edi, [eax+PROC.pdt_0+4096-32] ;last 8 pd entries up to 32Mb framebuffer
mov ecx, 8
rep movsd ;patch pde
sub esi, 32
mov edi, [eax+PROC.list.next] ;next process/address space
xchg eax, edi
cmp eax, edi
jne .patch_pde
bt [cpu_caps], CAPS_PGE
jnc .cr3_flush
mov eax, cr4
btr eax, 7 ;clear cr4.PGE
mov cr4, eax ;flush TLB
bts eax, 7
mov cr4, eax ;flush TLB
.exit:
popfd
pop edi
pop esi
ret
.cr3_flush:
mov eax, cr3
mov cr3, eax ;flush TLB
jmp .exit