--- /dev/null
+/*
+ * GRUB -- GRand Unified Bootloader
+ * Copyright (C) 2005 Free Software Foundation, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#ifndef GRUB_VBE_MACHINE_HEADER
+#define GRUB_VBE_MACHINE_HEADER 1
+
+#include <grub/symbol.h>
+#include <grub/types.h>
+
+/* Note:
+
+ Please refer to VESA BIOS Extension 3.0 Specification for more descriptive
+ meanings of following structures and how they should be used.
+
+ I have tried to maintain field name comatibility against specification
+ while following naming convetions used in GRUB. */
+
+typedef grub_uint32_t grub_vbe_farptr_t;
+typedef grub_uint32_t grub_vbe_physptr_t;
+typedef grub_uint32_t grub_vbe_status_t;
+
+struct grub_vbe_info_block
+{
+ grub_uint8_t signature[4];
+ grub_uint16_t version;
+
+ grub_vbe_farptr_t oem_string_ptr;
+ grub_uint32_t capabilities;
+ grub_vbe_farptr_t video_mode_ptr;
+ grub_uint16_t total_memory;
+
+ grub_uint16_t oem_software_rev;
+ grub_vbe_farptr_t oem_vendor_name_ptr;
+ grub_vbe_farptr_t oem_product_name_ptr;
+ grub_vbe_farptr_t oem_product_rev_ptr;
+
+ grub_uint8_t reserved[222];
+
+ grub_uint8_t oem_data[256];
+} __attribute__ ((packed));
+
+struct grub_vbe_mode_info_block
+{
+ /* Mandory information for all VBE revisions. */
+ grub_uint16_t mode_attributes;
+ grub_uint8_t win_a_attributes;
+ grub_uint8_t win_b_attributes;
+ grub_uint16_t win_granularity;
+ grub_uint16_t win_size;
+ grub_uint16_t win_a_segment;
+ grub_uint16_t win_b_segment;
+ grub_vbe_farptr_t win_func_ptr;
+ grub_uint16_t bytes_per_scan_line;
+
+ /* Mandory information for VBE 1.2 and above. */
+ grub_uint16_t x_resolution;
+ grub_uint16_t y_resolution;
+ grub_uint8_t x_char_size;
+ grub_uint8_t y_char_size;
+ grub_uint8_t number_of_planes;
+ grub_uint8_t bits_per_pixel;
+ grub_uint8_t number_of_banks;
+ grub_uint8_t memory_model;
+ grub_uint8_t bank_size;
+ grub_uint8_t number_of_image_pages;
+ grub_uint8_t reserved;
+
+ /* Direct Color fields (required for direct/6 and YUV/7 memory models). */
+ grub_uint8_t red_mask_size;
+ grub_uint8_t red_field_position;
+ grub_uint8_t green_mask_size;
+ grub_uint8_t green_field_position;
+ grub_uint8_t blue_mask_size;
+ grub_uint8_t blue_field_position;
+ grub_uint8_t rsvd_mask_size;
+ grub_uint8_t rsvd_field_position;
+ grub_uint8_t direct_color_mode_info;
+
+ /* Mandory information for VBE 2.0 and above. */
+ grub_vbe_physptr_t phys_base_addr;
+ grub_uint32_t reserved2;
+ grub_uint16_t reserved3;
+
+ /* Mandory information for VBE 3.0 and above. */
+ grub_uint16_t lin_bytes_per_scan_line;
+ grub_uint8_t bnk_number_of_image_pages;
+ grub_uint8_t lin_number_of_image_pages;
+ grub_uint8_t lin_red_mask_size;
+ grub_uint8_t lin_red_field_position;
+ grub_uint8_t lin_green_mask_size;
+ grub_uint8_t lin_green_field_position;
+ grub_uint8_t lin_blue_mask_size;
+ grub_uint8_t lin_blue_field_position;
+ grub_uint8_t lin_rsvd_mask_size;
+ grub_uint8_t lin_rsvd_field_position;
+ grub_uint32_t max_pixel_clock;
+
+ /* Reserved field to make structure to be 256 bytes long, VESA BIOS
+ Extension 3.0 Specification says to reserve 189 bytes here but
+ that doesn't make structure to be 256 bytes. So additional one is
+ added here. */
+ grub_uint8_t reserved4[189 + 1];
+} __attribute__ ((packed));
+
+struct grub_vbe_crtc_info_block
+{
+ grub_uint16_t horizontal_total;
+ grub_uint16_t horizontal_sync_start;
+ grub_uint16_t horizontal_sync_end;
+ grub_uint16_t vertical_total;
+ grub_uint16_t vertical_sync_start;
+ grub_uint16_t vertical_sync_end;
+ grub_uint8_t flags;
+ grub_uint32_t pixel_clock;
+ grub_uint16_t refresh_rate;
+ grub_uint8_t reserved[40];
+} __attribute__ ((packed));
+
+struct grub_vbe_palette_data
+{
+ grub_uint8_t blue;
+ grub_uint8_t green;
+ grub_uint8_t red;
+ grub_uint8_t aligment;
+} __attribute__ ((packed));
+
+/* Call VESA BIOS 0x4f00 to get VBE Controller Information, return status. */
+grub_vbe_status_t EXPORT_FUNC(grub_vbe_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_get_mode_info) (grub_uint32_t mode,
+ struct grub_vbe_mode_info_block *mode_info);
+
+/* Call VESA BIOS 0x4f02 to set video mode, return status. */
+grub_vbe_status_t EXPORT_FUNC(grub_vbe_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_get_mode) (grub_uint32_t *mode);
+
+/* Call VESA BIOS 0x4f05 to set memory window, return status. */
+grub_vbe_status_t EXPORT_FUNC(grub_vbe_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_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_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_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_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_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_set_palette_data) (grub_uint32_t color_count,
+ grub_uint32_t start_index,
+ struct grub_vbe_palette_data *palette_data);
+
+#endif /* ! GRUB_VBE_MACHINE_HEADER */
/*
* GRUB -- GRand Unified Bootloader
- * Copyright (C) 1999,2000,2001,2002,2003 Free Software Foundation, Inc.
+ * Copyright (C) 1999,2000,2001,2002,2003,2005 Free Software Foundation, Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* 31 24 19 16 7 0
* ------------------------------------------------------------
* | | |B| |A| | | |1|0|E|W|A| |
- * | BASE 31..24 |G|/|0|V| LIMIT |P|DPL| TYPE | BASE 23:16 |
+ * | BASE 31..24 |G|/|L|V| LIMIT |P|DPL| TYPE | BASE 23:16 | 4
* | | |D| |L| 19..16| | |1|1|C|R|A| |
* ------------------------------------------------------------
* | | |
- * | BASE 15..0 | LIMIT 15..0 |
+ * | BASE 15..0 | LIMIT 15..0 | 0
* | | |
* ------------------------------------------------------------
*
.word 0, 0
.byte 0, 0, 0, 0
- /* code segment */
+ /* -- code segment --
+ * base = 0x00000000, limit = 0xFFFFF (4 KiB Granularity), present
+ * type = 32bit code execute/read, DPL = 0
+ */
.word 0xFFFF, 0
.byte 0, 0x9A, 0xCF, 0
- /* data segment */
+ /* -- data segment --
+ * base = 0x00000000, limit 0xFFFFF (4 KiB Granularity), present
+ * type = 32 bit data read/write, DPL = 0
+ */
.word 0xFFFF, 0
.byte 0, 0x92, 0xCF, 0
- /* 16 bit real mode CS */
+ /* -- 16 bit real mode CS --
+ * base = 0x00000000, limit 0x0FFFF (1 B Granularity), present
+ * type = 16 bit code execute/read only/conforming, DPL = 0
+ */
.word 0xFFFF, 0
.byte 0, 0x9E, 0, 0
- /* 16 bit real mode DS */
+ /* -- 16 bit real mode DS --
+ * base = 0x00000000, limit 0x0FFFF (1 B Granularity), present
+ * type = 16 bit data read/write, DPL = 0
+ */
.word 0xFFFF, 0
.byte 0, 0x92, 0, 0
popl %ebx
popl %ebp
ret
+
+/*
+ * grub_vbe_status_t grub_vbe_get_controller_info (struct grub_vbe_info_block *controller_info)
+ *
+ * Register allocations for parameters:
+ * %eax *controller_info
+ */
+FUNCTION(grub_vbe_get_controller_info)
+ pushl %ebp
+ pushl %edi
+
+ 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. */
+
+ popl %edi
+ popl %ebp
+ ret
+
+/*
+ * grub_vbe_status_t grub_vbe_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_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_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_set_mode)
+ pushl %ebp
+ pushl %ebx
+
+ 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 %ebx
+ popl %ebp
+ ret
+
+/*
+ * grub_vbe_status_t grub_vbe_get_mode (grub_uint32_t *mode)
+ *
+ * Register allocations for parameters:
+ * %eax *mode
+ */
+FUNCTION(grub_vbe_get_mode)
+ pushl %ebp
+ pushl %ebx
+ 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 %ebx
+ popl %ebp
+ ret
+
+/*
+ * grub_vbe_status_t grub_vbe_set_memory_window (grub_uint32_t window,
+ * grub_uint32_t position);
+ *
+ * Register allocations for parameters:
+ * %eax window
+ * %edx position
+ */
+FUNCTION(grub_vbe_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_get_memory_window (grub_uint32_t window,
+ * grub_uint32_t *position);
+ *
+ * Register allocations for parameters:
+ * %eax window
+ * %edx *position
+ */
+FUNCTION(grub_vbe_get_memory_window)
+ pushl %ebp
+ pushl %ebx
+ 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 %ebx
+ popl %ebp
+ ret
+
+/*
+ * grub_vbe_status_t grub_vbe_set_scanline_length (grub_uint32_t length)
+ *
+ * Register allocations for parameters:
+ * %eax length
+ */
+FUNCTION(grub_vbe_set_scanline_length)
+ pushl %ebp
+ pushl %ebx
+
+ 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 %ebx
+ popl %ebp
+ ret
+
+/*
+ * grub_vbe_status_t grub_vbe_get_scanline_length (grub_uint32_t *length)
+ *
+ * Register allocations for parameters:
+ * %eax *length
+ */
+FUNCTION(grub_vbe_get_scanline_length)
+ pushl %ebp
+ pushl %ebx
+ 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 %ebx
+ popl %ebp
+ ret
+
+/*
+ * grub_vbe_status_t grub_vbe_set_display_start (grub_uint32_t x,
+ * grub_uint32_t y)
+ *
+ * Register allocations for parameters:
+ * %eax x
+ * %edx y
+ */
+FUNCTION(grub_vbe_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_get_display_start (grub_uint32_t *x,
+ * grub_uint32_t *y)
+ *
+ * Register allocations for parameters:
+ * %eax *x
+ * %edx *y
+ */
+FUNCTION(grub_vbe_get_display_start)
+ pushl %ebp
+ pushl %ebx
+ 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 %ebx
+ popl %ebp
+ ret
+
+/*
+ * grub_vbe_status_t grub_vbe_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_set_palette_data)
+ pushl %ebp
+ pushl %ebx
+
+ 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 %ebx
+ popl %ebp
+ ret
projects / thirdparty / grub.git / commitdiff
