intwrap vbe and vga calls
This commit is contained in:
Vladimir 'phcoder' Serbinenko
parent
56912f57b6
commit
65936631e4
6 changed files with 244 additions and 555 deletions
|
|
@ -54,8 +54,8 @@ kernel_img_SOURCES = kern/i386/pc/startup.S \
|
|||
kern/env.c \
|
||||
term/i386/pc/console.c term/i386/vga_common.c \
|
||||
symlist.c
|
||||
kernel_img_HEADERS += machine/biosdisk.h machine/vga.h machine/vbe.h \
|
||||
machine/pxe.h i386/pit.h machine/init.h machine/int.h
|
||||
kernel_img_HEADERS += machine/biosdisk.h machine/pxe.h i386/pit.h \
|
||||
machine/init.h machine/int.h
|
||||
kernel_img_CFLAGS = $(COMMON_CFLAGS) $(TARGET_IMG_CFLAGS)
|
||||
kernel_img_ASFLAGS = $(COMMON_ASFLAGS)
|
||||
kernel_img_LDFLAGS = $(COMMON_LDFLAGS) $(TARGET_IMG_LDFLAGS)$(GRUB_KERNEL_MACHINE_LINK_ADDR) $(COMMON_CFLAGS)
|
||||
|
|
|
|||
|
|
@ -169,56 +169,40 @@ struct grub_vbe_palette_data
|
|||
grub_uint8_t alignment;
|
||||
} __attribute__ ((packed));
|
||||
|
||||
/* Prototypes for kernel real mode thunks. */
|
||||
|
||||
/* Prototypes for helper functions. */
|
||||
/* Call VESA BIOS 0x4f00 to get VBE Controller Information, return status. */
|
||||
grub_vbe_status_t EXPORT_FUNC(grub_vbe_bios_get_controller_info) (struct grub_vbe_info_block *controller_info);
|
||||
|
||||
grub_vbe_status_t
|
||||
grub_vbe_bios_get_controller_info (struct grub_vbe_info_block *controller_info);
|
||||
/* Call VESA BIOS 0x4f01 to get VBE Mode Information, return status. */
|
||||
grub_vbe_status_t EXPORT_FUNC(grub_vbe_bios_get_mode_info) (grub_uint32_t mode,
|
||||
grub_vbe_status_t
|
||||
grub_vbe_bios_get_mode_info (grub_uint32_t mode,
|
||||
struct grub_vbe_mode_info_block *mode_info);
|
||||
/* Call VESA BIOS 0x4f03 to return current VBE Mode, return status. */
|
||||
grub_vbe_status_t
|
||||
grub_vbe_bios_get_mode (grub_uint32_t *mode);
|
||||
/* Call VESA BIOS 0x4f05 to set memory window, return status. */
|
||||
grub_vbe_status_t
|
||||
grub_vbe_bios_set_memory_window (grub_uint32_t window, grub_uint32_t position);
|
||||
/* Call VESA BIOS 0x4f05 to return memory window, return status. */
|
||||
grub_vbe_status_t
|
||||
grub_vbe_bios_get_memory_window (grub_uint32_t window,
|
||||
grub_uint32_t *position);
|
||||
/* Call VESA BIOS 0x4f06 to set scanline length (in bytes), return status. */
|
||||
grub_vbe_status_t
|
||||
grub_vbe_bios_set_scanline_length (grub_uint32_t length);
|
||||
/* Call VESA BIOS 0x4f06 to return scanline length (in bytes), return status. */
|
||||
grub_vbe_status_t
|
||||
grub_vbe_bios_get_scanline_length (grub_uint32_t *length);
|
||||
/* Call VESA BIOS 0x4f07 to get display start, return status. */
|
||||
grub_vbe_status_t
|
||||
grub_vbe_bios_get_display_start (grub_uint32_t *x,
|
||||
grub_uint32_t *y);
|
||||
|
||||
grub_vbe_status_t EXPORT_FUNC(grub_vbe_bios_getset_dac_palette_width) (int set, int *width);
|
||||
grub_vbe_status_t grub_vbe_bios_getset_dac_palette_width (int set, int *width);
|
||||
|
||||
#define grub_vbe_bios_get_dac_palette_width(width) grub_vbe_bios_getset_dac_palette_width(0, (width))
|
||||
#define grub_vbe_bios_set_dac_palette_width(width) grub_vbe_bios_getset_dac_palette_width(1, (width))
|
||||
|
||||
/* Call VESA BIOS 0x4f02 to set video mode, return status. */
|
||||
grub_vbe_status_t EXPORT_FUNC(grub_vbe_bios_set_mode) (grub_uint32_t mode,
|
||||
struct grub_vbe_crtc_info_block *crtc_info);
|
||||
|
||||
/* Call VESA BIOS 0x4f03 to return current VBE Mode, return status. */
|
||||
grub_vbe_status_t EXPORT_FUNC(grub_vbe_bios_get_mode) (grub_uint32_t *mode);
|
||||
|
||||
/* Call VESA BIOS 0x4f05 to set memory window, return status. */
|
||||
grub_vbe_status_t EXPORT_FUNC(grub_vbe_bios_set_memory_window) (grub_uint32_t window,
|
||||
grub_uint32_t position);
|
||||
|
||||
/* Call VESA BIOS 0x4f05 to return memory window, return status. */
|
||||
grub_vbe_status_t EXPORT_FUNC(grub_vbe_bios_get_memory_window) (grub_uint32_t window,
|
||||
grub_uint32_t *position);
|
||||
|
||||
/* Call VESA BIOS 0x4f06 to set scanline length (in bytes), return status. */
|
||||
grub_vbe_status_t EXPORT_FUNC(grub_vbe_bios_set_scanline_length) (grub_uint32_t length);
|
||||
|
||||
/* Call VESA BIOS 0x4f06 to return scanline length (in bytes), return status. */
|
||||
grub_vbe_status_t EXPORT_FUNC(grub_vbe_bios_get_scanline_length) (grub_uint32_t *length);
|
||||
|
||||
/* Call VESA BIOS 0x4f07 to set display start, return status. */
|
||||
grub_vbe_status_t EXPORT_FUNC(grub_vbe_bios_set_display_start) (grub_uint32_t x,
|
||||
grub_uint32_t y);
|
||||
|
||||
/* Call VESA BIOS 0x4f07 to get display start, return status. */
|
||||
grub_vbe_status_t EXPORT_FUNC(grub_vbe_bios_get_display_start) (grub_uint32_t *x,
|
||||
grub_uint32_t *y);
|
||||
|
||||
/* Call VESA BIOS 0x4f09 to set palette data, return status. */
|
||||
grub_vbe_status_t EXPORT_FUNC(grub_vbe_bios_set_palette_data) (grub_uint32_t color_count,
|
||||
grub_uint32_t start_index,
|
||||
struct grub_vbe_palette_data *palette_data);
|
||||
|
||||
/* Prototypes for helper functions. */
|
||||
|
||||
grub_err_t grub_vbe_probe (struct grub_vbe_info_block *info_block);
|
||||
grub_err_t grub_vbe_set_video_mode (grub_uint32_t mode,
|
||||
struct grub_vbe_mode_info_block *mode_info);
|
||||
|
|
|
|||
|
|
@ -25,7 +25,4 @@
|
|||
/* The VGA (at the beginning of upper memory). */
|
||||
#define GRUB_MEMORY_MACHINE_VGA_ADDR GRUB_MEMORY_MACHINE_UPPER
|
||||
|
||||
/* Set the video mode to MODE and return the previous mode. */
|
||||
unsigned char EXPORT_FUNC(grub_vga_set_mode) (unsigned char mode);
|
||||
|
||||
#endif /* ! GRUB_VGA_MACHINE_HEADER */
|
||||
|
|
|
|||
|
|
@ -1434,513 +1434,6 @@ FUNCTION(grub_get_rtc)
|
|||
popl %ebp
|
||||
ret
|
||||
|
||||
|
||||
/*
|
||||
* unsigned char grub_vga_set_mode (unsigned char mode)
|
||||
*/
|
||||
FUNCTION(grub_vga_set_mode)
|
||||
pushl %ebp
|
||||
pushl %ebx
|
||||
movl %eax, %ecx
|
||||
|
||||
call prot_to_real
|
||||
.code16
|
||||
/* get current mode */
|
||||
xorw %bx, %bx
|
||||
movb $0x0f, %ah
|
||||
int $0x10
|
||||
movb %al, %dl
|
||||
|
||||
/* set the new mode */
|
||||
movb %cl, %al
|
||||
xorb %ah, %ah
|
||||
int $0x10
|
||||
|
||||
DATA32 call real_to_prot
|
||||
.code32
|
||||
|
||||
movb %dl, %al
|
||||
popl %ebx
|
||||
popl %ebp
|
||||
ret
|
||||
|
||||
/*
|
||||
* grub_vbe_bios_status_t grub_vbe_get_controller_info (struct grub_vbe_info_block *controller_info)
|
||||
*
|
||||
* Register allocations for parameters:
|
||||
* %eax *controller_info
|
||||
*/
|
||||
FUNCTION(grub_vbe_bios_get_controller_info)
|
||||
pushl %ebp
|
||||
pushl %edi
|
||||
pushl %edx
|
||||
|
||||
movw %ax, %di /* Store *controller_info to %edx:%di. */
|
||||
xorw %ax, %ax
|
||||
shrl $4, %eax
|
||||
mov %eax, %edx /* prot_to_real destroys %eax. */
|
||||
|
||||
call prot_to_real
|
||||
.code16
|
||||
|
||||
pushw %es
|
||||
|
||||
movw %dx, %es /* *controller_info is now on %es:%di. */
|
||||
movw $0x4f00, %ax
|
||||
int $0x10
|
||||
|
||||
movw %ax, %dx /* real_to_prot destroys %eax. */
|
||||
|
||||
popw %es
|
||||
|
||||
DATA32 call real_to_prot
|
||||
.code32
|
||||
|
||||
movl %edx, %eax
|
||||
andl $0x0FFFF, %eax /* Return value in %eax. */
|
||||
|
||||
pop %edx
|
||||
popl %edi
|
||||
popl %ebp
|
||||
ret
|
||||
|
||||
/*
|
||||
* grub_vbe_status_t grub_vbe_bios_get_mode_info (grub_uint32_t mode,
|
||||
* struct grub_vbe_mode_info_block *mode_info)
|
||||
*
|
||||
* Register allocations for parameters:
|
||||
* %eax mode
|
||||
* %edx *mode_info
|
||||
*/
|
||||
FUNCTION(grub_vbe_bios_get_mode_info)
|
||||
pushl %ebp
|
||||
pushl %edi
|
||||
|
||||
movl %eax, %ecx /* Store mode number to %ecx. */
|
||||
|
||||
movw %dx, %di /* Store *mode_info to %edx:%di. */
|
||||
xorw %dx, %dx
|
||||
shrl $4, %edx
|
||||
|
||||
call prot_to_real
|
||||
.code16
|
||||
|
||||
pushw %es
|
||||
|
||||
movw %dx, %es /* *mode_info is now on %es:%di. */
|
||||
movw $0x4f01, %ax
|
||||
int $0x10
|
||||
|
||||
movw %ax, %dx /* real_to_prot destroys %eax. */
|
||||
|
||||
popw %es
|
||||
|
||||
DATA32 call real_to_prot
|
||||
.code32
|
||||
|
||||
movl %edx, %eax
|
||||
andl $0x0FFFF, %eax /* Return value in %eax. */
|
||||
|
||||
popl %edi
|
||||
popl %ebp
|
||||
ret
|
||||
|
||||
/*
|
||||
* grub_vbe_status_t grub_vbe_bios_set_mode (grub_uint32_t mode,
|
||||
* struct grub_vbe_crtc_info_block *crtc_info)
|
||||
*
|
||||
* Register allocations for parameters:
|
||||
* %eax mode
|
||||
* %edx *crtc_info
|
||||
*/
|
||||
FUNCTION(grub_vbe_bios_set_mode)
|
||||
pushl %ebp
|
||||
pushl %ebx
|
||||
pushl %edi
|
||||
|
||||
movl %eax, %ebx /* Store mode in %ebx. */
|
||||
|
||||
movw %dx, %di /* Store *crtc_info to %edx:%di. */
|
||||
xorw %dx, %dx
|
||||
shrl $4, %edx
|
||||
|
||||
call prot_to_real
|
||||
.code16
|
||||
|
||||
pushw %es
|
||||
|
||||
movw %dx, %es /* *crtc_info is now on %es:%di. */
|
||||
|
||||
movw $0x4f02, %ax
|
||||
int $0x10
|
||||
|
||||
movw %ax, %dx /* real_to_prot destroys %eax. */
|
||||
|
||||
popw %es
|
||||
|
||||
DATA32 call real_to_prot
|
||||
.code32
|
||||
|
||||
movw %dx, %ax
|
||||
andl $0xFFFF, %eax /* Return value in %eax. */
|
||||
|
||||
popl %edi
|
||||
popl %ebx
|
||||
popl %ebp
|
||||
ret
|
||||
|
||||
/*
|
||||
* grub_vbe_status_t grub_vbe_bios_get_mode (grub_uint32_t *mode)
|
||||
*
|
||||
* Register allocations for parameters:
|
||||
* %eax *mode
|
||||
*/
|
||||
FUNCTION(grub_vbe_bios_get_mode)
|
||||
pushl %ebp
|
||||
pushl %ebx
|
||||
pushl %edi
|
||||
pushl %edx
|
||||
pushl %eax /* Push *mode to stack. */
|
||||
|
||||
call prot_to_real
|
||||
.code16
|
||||
|
||||
movw $0x4f03, %ax
|
||||
int $0x10
|
||||
|
||||
movw %ax, %dx /* real_to_prot destroys %eax. */
|
||||
|
||||
DATA32 call real_to_prot
|
||||
.code32
|
||||
|
||||
popl %edi /* Pops *mode from stack to %edi. */
|
||||
andl $0xFFFF, %ebx
|
||||
movl %ebx, (%edi)
|
||||
|
||||
movw %dx, %ax
|
||||
andl $0xFFFF, %eax /* Return value in %eax. */
|
||||
|
||||
popl %edx
|
||||
popl %edi
|
||||
popl %ebx
|
||||
popl %ebp
|
||||
ret
|
||||
|
||||
/*
|
||||
* grub_vbe_status_t grub_vbe_bios_getset_dac_palette_width (int set, int *dac_mask_size)
|
||||
*
|
||||
* Register allocations for parameters:
|
||||
* %eax set
|
||||
* %edx *dac_mask_size
|
||||
*/
|
||||
FUNCTION(grub_vbe_bios_getset_dac_palette_width)
|
||||
pushl %ebp
|
||||
pushl %ebx
|
||||
|
||||
xorl %ebx, %ebx
|
||||
|
||||
/* If we only want to fetch the value, set %bl to 1. */
|
||||
testl %eax, %eax
|
||||
jne 1f
|
||||
incb %bl
|
||||
1:
|
||||
|
||||
/* Put desired width in %bh. */
|
||||
movl (%edx), %eax
|
||||
movb %al, %bh
|
||||
|
||||
call prot_to_real
|
||||
.code16
|
||||
|
||||
movw $0x4f08, %ax
|
||||
int $0x10
|
||||
|
||||
movw %ax, %cx /* real_to_prot destroys %eax. */
|
||||
|
||||
DATA32 call real_to_prot
|
||||
.code32
|
||||
|
||||
/* Move result back to *dac_mask_size. */
|
||||
xorl %eax, %eax
|
||||
movb %bh, %al
|
||||
movl %eax, (%edx)
|
||||
|
||||
/* Return value in %eax. */
|
||||
movw %cx, %ax
|
||||
|
||||
popl %ebx
|
||||
popl %ebp
|
||||
ret
|
||||
|
||||
/*
|
||||
* grub_vbe_status_t grub_vbe_bios_set_memory_window (grub_uint32_t window,
|
||||
* grub_uint32_t position);
|
||||
*
|
||||
* Register allocations for parameters:
|
||||
* %eax window
|
||||
* %edx position
|
||||
*/
|
||||
FUNCTION(grub_vbe_bios_set_memory_window)
|
||||
pushl %ebp
|
||||
pushl %ebx
|
||||
|
||||
movl %eax, %ebx
|
||||
|
||||
call prot_to_real
|
||||
.code16
|
||||
|
||||
movw $0x4f05, %ax
|
||||
andw $0x00ff, %bx /* BL = window, BH = 0, Set memory window. */
|
||||
int $0x10
|
||||
|
||||
movw %ax, %dx /* real_to_prot destroys %eax. */
|
||||
|
||||
DATA32 call real_to_prot
|
||||
.code32
|
||||
|
||||
movw %dx, %ax
|
||||
andl $0xFFFF, %eax /* Return value in %eax. */
|
||||
|
||||
popl %ebx
|
||||
popl %ebp
|
||||
ret
|
||||
|
||||
/*
|
||||
* grub_vbe_status_t grub_vbe_bios_get_memory_window (grub_uint32_t window,
|
||||
* grub_uint32_t *position);
|
||||
*
|
||||
* Register allocations for parameters:
|
||||
* %eax window
|
||||
* %edx *position
|
||||
*/
|
||||
FUNCTION(grub_vbe_bios_get_memory_window)
|
||||
pushl %ebp
|
||||
pushl %ebx
|
||||
pushl %edi
|
||||
pushl %edx /* Push *position to stack. */
|
||||
|
||||
movl %eax, %ebx /* Store window in %ebx. */
|
||||
|
||||
call prot_to_real
|
||||
.code16
|
||||
|
||||
movw $0x4f05, %ax
|
||||
andw $0x00ff, %bx /* BL = window. */
|
||||
orw $0x0100, %bx /* BH = 1, Get memory window. */
|
||||
int $0x10
|
||||
|
||||
movw %ax, %bx /* real_to_prot destroys %eax. */
|
||||
|
||||
DATA32 call real_to_prot
|
||||
.code32
|
||||
|
||||
popl %edi /* pops *position from stack to %edi. */
|
||||
andl $0xFFFF, %edx
|
||||
movl %edx, (%edi) /* Return position to caller. */
|
||||
|
||||
movw %bx, %ax
|
||||
andl $0xFFFF, %eax /* Return value in %eax. */
|
||||
|
||||
popl %edi
|
||||
popl %ebx
|
||||
popl %ebp
|
||||
ret
|
||||
|
||||
/*
|
||||
* grub_vbe_status_t grub_vbe_bios_set_scanline_length (grub_uint32_t length)
|
||||
*
|
||||
* Register allocations for parameters:
|
||||
* %eax length
|
||||
*/
|
||||
FUNCTION(grub_vbe_bios_set_scanline_length)
|
||||
pushl %ebp
|
||||
pushl %ebx
|
||||
pushl %edx
|
||||
|
||||
movl %eax, %ecx /* Store length in %ecx. */
|
||||
|
||||
call prot_to_real
|
||||
.code16
|
||||
|
||||
movw $0x4f06, %ax
|
||||
movw $0x0002, %bx /* BL = 2, Set Scan Line in Bytes. */
|
||||
int $0x10
|
||||
|
||||
movw %ax, %dx /* real_to_prot destroys %eax. */
|
||||
|
||||
DATA32 call real_to_prot
|
||||
.code32
|
||||
|
||||
movw %dx, %ax
|
||||
andl $0xFFFF, %eax /* Return value in %eax. */
|
||||
|
||||
popl %edx
|
||||
popl %ebx
|
||||
popl %ebp
|
||||
ret
|
||||
|
||||
/*
|
||||
* grub_vbe_status_t grub_vbe_bios_get_scanline_length (grub_uint32_t *length)
|
||||
*
|
||||
* Register allocations for parameters:
|
||||
* %eax *length
|
||||
*/
|
||||
FUNCTION(grub_vbe_bios_get_scanline_length)
|
||||
pushl %ebp
|
||||
pushl %ebx
|
||||
pushl %edi
|
||||
pushl %edx /* Push *length to stack. */
|
||||
|
||||
call prot_to_real
|
||||
.code16
|
||||
|
||||
movw $0x4f06, %ax
|
||||
movw $0x0001, %bx /* BL = 1, Get Scan Line Length (in bytes). */
|
||||
int $0x10
|
||||
|
||||
movw %ax, %dx /* real_to_prot destroys %eax. */
|
||||
|
||||
DATA32 call real_to_prot
|
||||
.code32
|
||||
|
||||
popl %edi /* Pops *length from stack to %edi. */
|
||||
andl $0xFFFF, %ebx
|
||||
movl %ebx, (%edi) /* Return length to caller. */
|
||||
|
||||
movw %dx, %ax
|
||||
andl $0xFFFF, %eax /* Return value in %eax. */
|
||||
|
||||
popl %edi
|
||||
popl %ebx
|
||||
popl %ebp
|
||||
ret
|
||||
|
||||
/*
|
||||
* grub_vbe_status_t grub_vbe_bios_set_display_start (grub_uint32_t x,
|
||||
* grub_uint32_t y)
|
||||
*
|
||||
* Register allocations for parameters:
|
||||
* %eax x
|
||||
* %edx y
|
||||
*/
|
||||
FUNCTION(grub_vbe_bios_set_display_start)
|
||||
pushl %ebp
|
||||
pushl %ebx
|
||||
|
||||
movl %eax, %ecx /* Store x in %ecx. */
|
||||
|
||||
call prot_to_real
|
||||
.code16
|
||||
|
||||
movw $0x4f07, %ax
|
||||
movw $0x0080, %bx /* BL = 80h, Set Display Start
|
||||
during Vertical Retrace. */
|
||||
int $0x10
|
||||
|
||||
movw %ax, %dx /* real_to_prot destroys %eax. */
|
||||
|
||||
DATA32 call real_to_prot
|
||||
.code32
|
||||
|
||||
movw %dx, %ax
|
||||
andl $0xFFFF, %eax /* Return value in %eax. */
|
||||
|
||||
popl %ebx
|
||||
popl %ebp
|
||||
ret
|
||||
|
||||
/*
|
||||
* grub_vbe_status_t grub_vbe_bios_get_display_start (grub_uint32_t *x,
|
||||
* grub_uint32_t *y)
|
||||
*
|
||||
* Register allocations for parameters:
|
||||
* %eax *x
|
||||
* %edx *y
|
||||
*/
|
||||
FUNCTION(grub_vbe_bios_get_display_start)
|
||||
pushl %ebp
|
||||
pushl %ebx
|
||||
pushl %edi
|
||||
pushl %eax /* Push *x to stack. */
|
||||
pushl %edx /* Push *y to stack. */
|
||||
|
||||
call prot_to_real
|
||||
.code16
|
||||
|
||||
movw $0x4f07, %ax
|
||||
movw $0x0001, %bx /* BL = 1, Get Display Start. */
|
||||
int $0x10
|
||||
|
||||
movw %ax, %bx /* real_to_prot destroys %eax. */
|
||||
|
||||
DATA32 call real_to_prot
|
||||
.code32
|
||||
|
||||
popl %edi /* Pops *y from stack to %edi. */
|
||||
andl $0xFFFF, %edx
|
||||
movl %edx, (%edi) /* Return y-position to caller. */
|
||||
|
||||
popl %edi /* Pops *x from stack to %edi. */
|
||||
andl $0xFFFF, %ecx
|
||||
movl %ecx, (%edi) /* Return x-position to caller. */
|
||||
|
||||
movw %bx, %ax
|
||||
andl $0xFFFF, %eax /* Return value in %eax. */
|
||||
|
||||
popl %edi
|
||||
popl %ebx
|
||||
popl %ebp
|
||||
ret
|
||||
|
||||
/*
|
||||
* grub_vbe_status_t grub_vbe_bios_set_palette_data (grub_uint32_t color_count,
|
||||
* grub_uint32_t start_index,
|
||||
* struct grub_vbe_palette_data *palette_data)
|
||||
*
|
||||
* Register allocations for parameters:
|
||||
* %eax color_count
|
||||
* %edx start_index
|
||||
* %ecx *palette_data
|
||||
*/
|
||||
FUNCTION(grub_vbe_bios_set_palette_data)
|
||||
pushl %ebp
|
||||
pushl %ebx
|
||||
pushl %edi
|
||||
|
||||
movl %eax, %ebx /* Store color_count in %ebx. */
|
||||
|
||||
movw %cx, %di /* Store *palette_data to %ecx:%di. */
|
||||
xorw %cx, %cx
|
||||
shrl $4, %ecx
|
||||
|
||||
call prot_to_real
|
||||
.code16
|
||||
|
||||
pushw %es
|
||||
|
||||
movw %cx, %es /* *palette_data is now on %es:%di. */
|
||||
movw %bx, %cx /* color_count is now on %cx. */
|
||||
|
||||
movw $0x4f09, %ax
|
||||
xorw %bx, %bx /* BL = 0, Set Palette Data. */
|
||||
int $0x10
|
||||
|
||||
movw %ax, %dx /* real_to_prot destroys %eax. */
|
||||
|
||||
popw %es
|
||||
|
||||
DATA32 call real_to_prot
|
||||
.code32
|
||||
|
||||
movw %dx, %ax
|
||||
andl $0xFFFF, %eax /* Return value in %eax. */
|
||||
|
||||
popl %edi
|
||||
popl %ebx
|
||||
popl %ebp
|
||||
ret
|
||||
|
||||
|
||||
pxe_rm_entry:
|
||||
.long 0
|
||||
|
||||
|
|
|
|||
|
|
@ -19,6 +19,7 @@
|
|||
// TODO: Deprecated and broken. Needs to be converted to Video Driver!
|
||||
|
||||
#include <grub/machine/vga.h>
|
||||
#include <grub/machine/int.h>
|
||||
#include <grub/machine/console.h>
|
||||
#include <grub/cpu/io.h>
|
||||
#include <grub/term.h>
|
||||
|
|
@ -82,6 +83,25 @@ static grub_font_t font = 0;
|
|||
#define INPUT_STATUS1_REGISTER 0x3DA
|
||||
#define INPUT_STATUS1_VERTR_BIT 0x08
|
||||
|
||||
static unsigned char
|
||||
grub_vga_set_mode (unsigned char mode)
|
||||
{
|
||||
struct grub_bios_int_registers regs;
|
||||
unsigned char ret;
|
||||
/* get current mode */
|
||||
regs.eax = 0x0f00;
|
||||
regs.ebx = 0;
|
||||
regs.flags = GRUB_CPU_INT_FLAGS_DEFAULT;
|
||||
grub_bios_interrupt (0x10, ®s);
|
||||
|
||||
ret = regs.eax & 0xff;
|
||||
regs.eax = mode;
|
||||
regs.flags = GRUB_CPU_INT_FLAGS_DEFAULT;
|
||||
grub_bios_interrupt (0x10, ®s);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static inline void
|
||||
wait_vretrace (void)
|
||||
{
|
||||
|
|
|
|||
|
|
@ -28,6 +28,7 @@
|
|||
#include <grub/misc.h>
|
||||
#include <grub/mm.h>
|
||||
#include <grub/video.h>
|
||||
#include <grub/machine/int.h>
|
||||
|
||||
static int vbe_detected = -1;
|
||||
|
||||
|
|
@ -71,6 +72,200 @@ real2pm (grub_vbe_farptr_t ptr)
|
|||
+ ((unsigned long) ptr & 0x0000FFFF));
|
||||
}
|
||||
|
||||
/* Call VESA BIOS 0x4f09 to set palette data, return status. */
|
||||
static grub_vbe_status_t
|
||||
grub_vbe_bios_set_palette_data (grub_uint32_t color_count,
|
||||
grub_uint32_t start_index,
|
||||
struct grub_vbe_palette_data *palette_data)
|
||||
{
|
||||
struct grub_bios_int_registers regs;
|
||||
regs.eax = 0x4f09;
|
||||
regs.ebx = 0;
|
||||
regs.ecx = color_count;
|
||||
regs.edx = start_index;
|
||||
regs.es = (((grub_addr_t) palette_data) & 0xffff0000) >> 4;
|
||||
regs.edi = ((grub_addr_t) palette_data) & 0xffff;
|
||||
regs.flags = GRUB_CPU_INT_FLAGS_DEFAULT;
|
||||
grub_bios_interrupt (0x10, ®s);
|
||||
return regs.eax & 0xffff;
|
||||
}
|
||||
|
||||
/* Call VESA BIOS 0x4f00 to get VBE Controller Information, return status. */
|
||||
grub_vbe_status_t
|
||||
grub_vbe_bios_get_controller_info (struct grub_vbe_info_block *ci)
|
||||
{
|
||||
struct grub_bios_int_registers regs;
|
||||
/* Store *controller_info to %es:%di. */
|
||||
regs.es = (((grub_addr_t) ci) & 0xffff0000) >> 4;
|
||||
regs.edi = ((grub_addr_t) ci) & 0xffff;
|
||||
regs.eax = 0x4f00;
|
||||
regs.flags = GRUB_CPU_INT_FLAGS_DEFAULT;
|
||||
grub_bios_interrupt (0x10, ®s);
|
||||
return regs.eax & 0xffff;
|
||||
}
|
||||
|
||||
/* Call VESA BIOS 0x4f01 to get VBE Mode Information, return status. */
|
||||
grub_vbe_status_t
|
||||
grub_vbe_bios_get_mode_info (grub_uint32_t mode,
|
||||
struct grub_vbe_mode_info_block *mode_info)
|
||||
{
|
||||
struct grub_bios_int_registers regs;
|
||||
regs.eax = 0x4f01;
|
||||
regs.ecx = mode;
|
||||
/* Store *mode_info to %es:%di. */
|
||||
regs.es = ((grub_addr_t) mode_info & 0xffff0000) >> 4;
|
||||
regs.edi = (grub_addr_t) mode_info & 0x0000ffff;
|
||||
regs.flags = GRUB_CPU_INT_FLAGS_DEFAULT;
|
||||
grub_bios_interrupt (0x10, ®s);
|
||||
return regs.eax & 0xffff;
|
||||
}
|
||||
|
||||
/* Call VESA BIOS 0x4f02 to set video mode, return status. */
|
||||
static grub_vbe_status_t
|
||||
grub_vbe_bios_set_mode (grub_uint32_t mode,
|
||||
struct grub_vbe_crtc_info_block *crtc_info)
|
||||
{
|
||||
struct grub_bios_int_registers regs;
|
||||
|
||||
regs.eax = 0x4f02;
|
||||
regs.ebx = mode;
|
||||
/* Store *crtc_info to %es:%di. */
|
||||
regs.es = (((grub_addr_t) crtc_info) & 0xffff0000) >> 4;
|
||||
regs.edi = ((grub_addr_t) crtc_info) & 0xffff;
|
||||
regs.flags = GRUB_CPU_INT_FLAGS_DEFAULT;
|
||||
grub_bios_interrupt (0x10, ®s);
|
||||
|
||||
return regs.eax & 0xffff;
|
||||
}
|
||||
|
||||
/* Call VESA BIOS 0x4f03 to return current VBE Mode, return status. */
|
||||
grub_vbe_status_t
|
||||
grub_vbe_bios_get_mode (grub_uint32_t *mode)
|
||||
{
|
||||
struct grub_bios_int_registers regs;
|
||||
|
||||
regs.eax = 0x4f03;
|
||||
regs.flags = GRUB_CPU_INT_FLAGS_DEFAULT;
|
||||
grub_bios_interrupt (0x10, ®s);
|
||||
*mode = regs.ebx & 0xffff;
|
||||
|
||||
return regs.eax & 0xffff;
|
||||
}
|
||||
|
||||
grub_vbe_status_t
|
||||
grub_vbe_bios_getset_dac_palette_width (int set, int *dac_mask_size)
|
||||
{
|
||||
struct grub_bios_int_registers regs;
|
||||
|
||||
regs.eax = 0x4f08;
|
||||
regs.ebx = (*dac_mask_size & 0xff) >> 8;
|
||||
regs.ebx = set ? 1 : 0;
|
||||
regs.flags = GRUB_CPU_INT_FLAGS_DEFAULT;
|
||||
grub_bios_interrupt (0x10, ®s);
|
||||
*dac_mask_size = (regs.ebx >> 8) & 0xff;
|
||||
|
||||
return regs.eax & 0xffff;
|
||||
}
|
||||
|
||||
/* Call VESA BIOS 0x4f05 to set memory window, return status. */
|
||||
grub_vbe_status_t
|
||||
grub_vbe_bios_set_memory_window (grub_uint32_t window,
|
||||
grub_uint32_t position)
|
||||
{
|
||||
struct grub_bios_int_registers regs;
|
||||
|
||||
/* BL = window, BH = 0, Set memory window. */
|
||||
regs.ebx = window & 0x00ff;
|
||||
regs.edx = position;
|
||||
regs.eax = 0x4f05;
|
||||
regs.flags = GRUB_CPU_INT_FLAGS_DEFAULT;
|
||||
grub_bios_interrupt (0x10, ®s);
|
||||
return regs.eax & 0xffff;
|
||||
}
|
||||
|
||||
/* Call VESA BIOS 0x4f05 to return memory window, return status. */
|
||||
grub_vbe_status_t
|
||||
grub_vbe_bios_get_memory_window (grub_uint32_t window,
|
||||
grub_uint32_t *position)
|
||||
{
|
||||
struct grub_bios_int_registers regs;
|
||||
|
||||
regs.eax = 0x4f05;
|
||||
/* BH = 1, Get memory window. BL = window. */
|
||||
regs.ebx = (window & 0x00ff) | 0x100;
|
||||
regs.flags = GRUB_CPU_INT_FLAGS_DEFAULT;
|
||||
grub_bios_interrupt (0x10, ®s);
|
||||
|
||||
*position = regs.edx & 0xffff;
|
||||
return regs.eax & 0xffff;
|
||||
}
|
||||
|
||||
/* Call VESA BIOS 0x4f06 to set scanline length (in bytes), return status. */
|
||||
grub_vbe_status_t
|
||||
grub_vbe_bios_set_scanline_length (grub_uint32_t length)
|
||||
{
|
||||
struct grub_bios_int_registers regs;
|
||||
|
||||
regs.ecx = length;
|
||||
regs.eax = 0x4f06;
|
||||
/* BL = 2, Set Scan Line in Bytes. */
|
||||
regs.ebx = 0x0002;
|
||||
regs.flags = GRUB_CPU_INT_FLAGS_DEFAULT;
|
||||
grub_bios_interrupt (0x10, ®s);
|
||||
return regs.eax & 0xffff;
|
||||
}
|
||||
|
||||
/* Call VESA BIOS 0x4f06 to return scanline length (in bytes), return status. */
|
||||
grub_vbe_status_t
|
||||
grub_vbe_bios_get_scanline_length (grub_uint32_t *length)
|
||||
{
|
||||
struct grub_bios_int_registers regs;
|
||||
|
||||
regs.eax = 0x4f06;
|
||||
regs.ebx = 0x0001;
|
||||
regs.flags = GRUB_CPU_INT_FLAGS_DEFAULT;
|
||||
/* BL = 1, Get Scan Line Length (in bytes). */
|
||||
grub_bios_interrupt (0x10, ®s);
|
||||
|
||||
*length = regs.ebx & 0xffff;
|
||||
return regs.eax & 0xffff;
|
||||
}
|
||||
|
||||
/* Call VESA BIOS 0x4f07 to set display start, return status. */
|
||||
static grub_vbe_status_t
|
||||
grub_vbe_bios_set_display_start (grub_uint32_t x, grub_uint32_t y)
|
||||
{
|
||||
struct grub_bios_int_registers regs;
|
||||
|
||||
/* Store x in %ecx. */
|
||||
regs.ecx = x;
|
||||
regs.edx = y;
|
||||
regs.eax = 0x4f07;
|
||||
/* BL = 80h, Set Display Start during Vertical Retrace. */
|
||||
regs.ebx = 0x0080;
|
||||
regs.flags = GRUB_CPU_INT_FLAGS_DEFAULT;
|
||||
grub_bios_interrupt (0x10, ®s);
|
||||
return regs.eax & 0xffff;
|
||||
}
|
||||
|
||||
/* Call VESA BIOS 0x4f07 to get display start, return status. */
|
||||
grub_vbe_status_t
|
||||
grub_vbe_bios_get_display_start (grub_uint32_t *x,
|
||||
grub_uint32_t *y)
|
||||
{
|
||||
struct grub_bios_int_registers regs;
|
||||
|
||||
regs.eax = 0x4f07;
|
||||
/* BL = 1, Get Display Start. */
|
||||
regs.ebx = 0x0001;
|
||||
regs.flags = GRUB_CPU_INT_FLAGS_DEFAULT;
|
||||
grub_bios_interrupt (0x10, ®s);
|
||||
|
||||
*x = regs.ecx & 0xffff;
|
||||
*y = regs.edx & 0xffff;
|
||||
return regs.eax & 0xffff;
|
||||
}
|
||||
|
||||
grub_err_t
|
||||
grub_vbe_probe (struct grub_vbe_info_block *info_block)
|
||||
{
|
||||
|
|
|
|||
Loading…
Reference in a new issue