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Coreboot video support.

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* grub-core/Makefile.core.def (vga): Extend to coreboot and multiboot.
	(vbe): Likewise.
	* grub-core/kern/i386/coreboot/startup.S: Include int.S.
	* grub-core/kern/i386/pc/startup.S (grub_bios_interrupt): Moved from
	here ...
	* grub-core/kern/i386/int.S: ... here.
	* grub-core/video/i386/pc/vbe.c: Updated includes.
	* grub-core/video/i386/pc/vga.c: Likewise.
	* include/grub/i386/coreboot/memory.h
	(GRUB_MEMORY_MACHINE_SCRATCH_ADDR): New definition.
	(GRUB_MEMORY_MACHINE_SCRATCH_SEG): Likewise.
	(GRUB_MEMORY_MACHINE_SCRATCH_SIZE): Likewise.
	* include/grub/i386/pc/int.h (GRUB_CPU_INT_FLAGS_DEFAULT) [!PCBIOS]:
	Disable interrupts.
	* include/grub/i386/pc/vga.h: Removed. All users updated.
This commit is contained in:
Vladimir 'phcoder' Serbinenko 2011-06-27 08:54:55 +02:00
parent 41bec7fec9
commit 9fc9ce3795
11 changed files with 184 additions and 136 deletions
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20
ChangeLog
View file

@ -1,3 +1,23 @@
2011-06-27 Vladimir Serbinenko <phcoder@gmail.com>
Coreboot video support.
* grub-core/Makefile.core.def (vga): Extend to coreboot and multiboot.
(vbe): Likewise.
* grub-core/kern/i386/coreboot/startup.S: Include int.S.
* grub-core/kern/i386/pc/startup.S (grub_bios_interrupt): Moved from
here ...
* grub-core/kern/i386/int.S: ... here.
* grub-core/video/i386/pc/vbe.c: Updated includes.
* grub-core/video/i386/pc/vga.c: Likewise.
* include/grub/i386/coreboot/memory.h
(GRUB_MEMORY_MACHINE_SCRATCH_ADDR): New definition.
(GRUB_MEMORY_MACHINE_SCRATCH_SEG): Likewise.
(GRUB_MEMORY_MACHINE_SCRATCH_SIZE): Likewise.
* include/grub/i386/pc/int.h (GRUB_CPU_INT_FLAGS_DEFAULT) [!PCBIOS]:
Disable interrupts.
* include/grub/i386/pc/vga.h: Removed. All users updated.
2011-06-27 Vladimir Serbinenko <phcoder@gmail.com>
* grub-core/disk/ahci.c (grub_ahci_readwrite_real): Use proper

2
grub-core/Makefile.am
View file

@ -100,10 +100,12 @@ endif
if COND_i386_coreboot
KERNEL_HEADER_FILES += $(top_srcdir)/include/grub/i386/pit.h
KERNEL_HEADER_FILES += $(top_builddir)/include/grub/i386/pc/int.h
endif
if COND_i386_multiboot
KERNEL_HEADER_FILES += $(top_srcdir)/include/grub/i386/pit.h
KERNEL_HEADER_FILES += $(top_builddir)/include/grub/i386/pc/int.h
endif
if COND_i386_qemu

8
grub-core/Makefile.core.def
View file

@ -1454,8 +1454,10 @@ module = {
module = {
name = vga;
i386_pc = video/i386/pc/vga.c;
common = video/i386/pc/vga.c;
enable = i386_pc;
enable = i386_coreboot;
enable = i386_multiboot;
};
module = {
@ -1533,8 +1535,10 @@ module = {
module = {
name = vbe;
i386_pc = video/i386/pc/vbe.c;
common = video/i386/pc/vbe.c;
enable = i386_pc;
enable = i386_coreboot;
enable = i386_multiboot;
};
module = {

1
grub-core/kern/i386/coreboot/startup.S
View file

@ -87,3 +87,4 @@ codestart:
*/
#include "../realmode.S"
#include "../int.S"

140
grub-core/kern/i386/int.S Normal file
View file

@ -0,0 +1,140 @@
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2010,2011 Free Software Foundation, Inc.
*
* GRUB 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 3 of the License, or
* (at your option) any later version.
*
* GRUB 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 GRUB. If not, see <http://www.gnu.org/licenses/>.
*/
FUNCTION(grub_bios_interrupt)
pushf
cli
#ifndef GRUB_MACHINE_PCBIOS
sidt protidt
#endif
popf
pushl %ebp
pushl %ecx
pushl %eax
pushl %ebx
pushl %esi
pushl %edi
pushl %edx
movb %al, intno
movl (%edx), %eax
movl %eax, LOCAL(bios_register_eax)
movw 4(%edx), %ax
movw %ax, LOCAL(bios_register_es)
movw 6(%edx), %ax
movw %ax, LOCAL(bios_register_ds)
movw 8(%edx), %ax
movw %ax, LOCAL(bios_register_flags)
movl 12(%edx), %ebx
movl 16(%edx), %ecx
movl 20(%edx), %edi
movl 24(%edx), %esi
movl 28(%edx), %edx
call prot_to_real
.code16
pushf
cli
#ifndef GRUB_MACHINE_PCBIOS
lidt realidt
#endif
mov %ds, %ax
push %ax
/* movw imm16, %ax*/
.byte 0xb8
LOCAL(bios_register_es):
.short 0
movw %ax, %es
/* movw imm16, %ax*/
.byte 0xb8
LOCAL(bios_register_ds):
.short 0
movw %ax, %ds
/* movw imm16, %ax*/
.byte 0xb8
LOCAL(bios_register_flags):
.short 0
push %ax
popf
/* movl imm32, %eax*/
.byte 0x66, 0xb8
LOCAL(bios_register_eax):
.long 0
/* int imm8. */
.byte 0xcd
intno:
.byte 0
movl %eax, %cs:LOCAL(bios_register_eax)
movw %ds, %ax
movw %ax, %cs:LOCAL(bios_register_ds)
pop %ax
mov %ax, %ds
pushf
pop %ax
movw %ax, LOCAL(bios_register_flags)
mov %es, %ax
movw %ax, LOCAL(bios_register_es)
popf
DATA32 call real_to_prot
.code32
popl %eax
movl %ebx, 12(%eax)
movl %ecx, 16(%eax)
movl %edi, 20(%eax)
movl %esi, 24(%eax)
movl %edx, 28(%eax)
movl %eax, %edx
movl LOCAL(bios_register_eax), %eax
movl %eax, (%edx)
movw LOCAL(bios_register_es), %ax
movw %ax, 4(%edx)
movw LOCAL(bios_register_ds), %ax
movw %ax, 6(%edx)
movw LOCAL(bios_register_flags), %ax
movw %ax, 8(%edx)
popl %edi
popl %esi
popl %ebx
popl %eax
popl %ecx
popl %ebp
#ifndef GRUB_MACHINE_PCBIOS
lidt protidt
#endif
ret
#ifndef GRUB_MACHINE_PCBIOS
realidt:
.word 0x100
.long 0
protidt:
.word 0
.long 0
#endif

100
grub-core/kern/i386/pc/startup.S
View file

@ -910,102 +910,4 @@ FUNCTION(grub_pxe_call)
popl %ebp
ret
FUNCTION(grub_bios_interrupt)
pushl %ebp
pushl %ecx
pushl %eax
pushl %ebx
pushl %esi
pushl %edi
pushl %edx
movb %al, intno
movl (%edx), %eax
movl %eax, LOCAL(bios_register_eax)
movw 4(%edx), %ax
movw %ax, LOCAL(bios_register_es)
movw 6(%edx), %ax
movw %ax, LOCAL(bios_register_ds)
movw 8(%edx), %ax
movw %ax, LOCAL(bios_register_flags)
movl 12(%edx), %ebx
movl 16(%edx), %ecx
movl 20(%edx), %edi
movl 24(%edx), %esi
movl 28(%edx), %edx
call prot_to_real
.code16
mov %ds, %ax
push %ax
/* movw imm16, %ax*/
.byte 0xb8
LOCAL(bios_register_es):
.short 0
movw %ax, %es
/* movw imm16, %ax*/
.byte 0xb8
LOCAL(bios_register_ds):
.short 0
movw %ax, %ds
/* movw imm16, %ax*/
.byte 0xb8
LOCAL(bios_register_flags):
.short 0
push %ax
popf
/* movl imm32, %eax*/
.byte 0x66, 0xb8
LOCAL(bios_register_eax):
.long 0
/* int imm8. */
.byte 0xcd
intno:
.byte 0
movl %eax, %cs:LOCAL(bios_register_eax)
movw %ds, %ax
movw %ax, %cs:LOCAL(bios_register_ds)
pop %ax
mov %ax, %ds
pushf
pop %ax
movw %ax, LOCAL(bios_register_flags)
mov %es, %ax
movw %ax, LOCAL(bios_register_es)
DATA32 call real_to_prot
.code32
popl %eax
movl %ebx, 12(%eax)
movl %ecx, 16(%eax)
movl %edi, 20(%eax)
movl %esi, 24(%eax)
movl %edx, 28(%eax)
movl %eax, %edx
movl LOCAL(bios_register_eax), %eax
movl %eax, (%edx)
movw LOCAL(bios_register_es), %ax
movw %ax, 4(%edx)
movw LOCAL(bios_register_ds), %ax
movw %ax, 6(%edx)
movw LOCAL(bios_register_flags), %ax
movw %ax, 8(%edx)
popl %edi
popl %esi
popl %ebx
popl %eax
popl %ecx
popl %ebp
ret
#include "../int.S"

7
grub-core/video/i386/pc/vbe.c
View file

@ -20,15 +20,14 @@
#include <grub/err.h>
#include <grub/machine/memory.h>
#include <grub/machine/vga.h>
#include <grub/machine/vbe.h>
#include <grub/i386/pc/vbe.h>
#include <grub/video_fb.h>
#include <grub/types.h>
#include <grub/dl.h>
#include <grub/misc.h>
#include <grub/mm.h>
#include <grub/video.h>
#include <grub/machine/int.h>
#include <grub/i386/pc/int.h>
GRUB_MOD_LICENSE ("GPLv3+");
@ -377,7 +376,7 @@ grub_vbe_set_video_mode (grub_uint32_t vbe_mode,
if (vbe_mode < 0x100)
{
/* If this is not a VESA mode, guess address. */
framebuffer.ptr = (grub_uint8_t *) GRUB_MEMORY_MACHINE_VGA_ADDR;
framebuffer.ptr = (grub_uint8_t *) 0xa0000;
}
else
{

5
grub-core/video/i386/pc/vga.c
View file

@ -18,8 +18,7 @@
#define grub_video_render_target grub_video_fbrender_target
#include <grub/machine/vga.h>
#include <grub/machine/int.h>
#include <grub/i386/pc/int.h>
#include <grub/machine/console.h>
#include <grub/cpu/io.h>
#include <grub/mm.h>
@ -34,7 +33,7 @@ GRUB_MOD_LICENSE ("GPLv3+");
#define VGA_WIDTH 640
#define VGA_HEIGHT 350
#define VGA_MEM ((grub_uint8_t *) GRUB_MEMORY_MACHINE_VGA_ADDR)
#define VGA_MEM ((grub_uint8_t *) 0xa0000)
#define PAGE_OFFSET(x) ((x) * (VGA_WIDTH * VGA_HEIGHT / 8))
static unsigned char text_mode;

4
include/grub/i386/coreboot/memory.h
View file

@ -28,6 +28,10 @@
#include <grub/memory.h>
#endif
#define GRUB_MEMORY_MACHINE_SCRATCH_ADDR 0x68000
#define GRUB_MEMORY_MACHINE_SCRATCH_SEG (GRUB_MEMORY_MACHINE_SCRATCH_ADDR >> 4)
#define GRUB_MEMORY_MACHINE_SCRATCH_SIZE 0x10000
#define GRUB_MEMORY_MACHINE_LOWER_USABLE 0x9fc00 /* 640 kiB - 1 kiB */
#define GRUB_MEMORY_MACHINE_UPPER_START 0x100000 /* 1 MiB */

5
include/grub/i386/pc/int.h
View file

@ -45,7 +45,12 @@ struct grub_bios_int_registers
#define GRUB_CPU_INT_FLAGS_INTERRUPT 0x200
#define GRUB_CPU_INT_FLAGS_DIRECTION 0x400
#define GRUB_CPU_INT_FLAGS_OVERFLOW 0x800
#ifdef GRUB_MACHINE_PCBIOS
#define GRUB_CPU_INT_FLAGS_DEFAULT GRUB_CPU_INT_FLAGS_INTERRUPT
#else
#define GRUB_CPU_INT_FLAGS_DEFAULT 0
#endif
void EXPORT_FUNC (grub_bios_interrupt) (grub_uint8_t intno,
struct grub_bios_int_registers *regs);

28
include/grub/i386/pc/vga.h
View file

@ -1,28 +0,0 @@
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2003,2007,2008 Free Software Foundation, Inc.
*
* GRUB 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 3 of the License, or
* (at your option) any later version.
*
* GRUB 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 GRUB. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef GRUB_VGA_MACHINE_HEADER
#define GRUB_VGA_MACHINE_HEADER 1
#include <grub/symbol.h>
#include <grub/machine/memory.h>
/* The VGA (at the beginning of upper memory). */
#define GRUB_MEMORY_MACHINE_VGA_ADDR GRUB_MEMORY_MACHINE_UPPER
#endif /* ! GRUB_VGA_MACHINE_HEADER */