GNUBoot
/
coreboot-kgpe-d16
2
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Add Yabel support (int 15 5fXX callbacks for vga bios) on the kontron 986lcd-m 

so it's possible to use the LCD panel connector. Values are hard coded instead
of read from CMOS but it's a start.

Signed-off-by: Stefan Reinauer <stepan@coresystems.de>
Acked-by: Peter Stuge <peter@stuge.se>



git-svn-id: svn://svn.coreboot.org/coreboot/trunk@5042 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
This commit is contained in:
Stefan Reinauer 2010-01-19 21:15:01 +00:00 committed by Stefan Reinauer
parent 775a766462
commit c6f2bd0d69
1 changed files with 49 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

49
src/mainboard/kontron/986lcd-m/mainboard.c
View File

@ -23,6 +23,7 @@
#include <device/device.h>
#include <console/console.h>
#include <boot/tables.h>
#include <x86emu/x86emu.h>
#include <pc80/mc146818rtc.h>
#include <arch/io.h>
#include "chip.h"
@ -34,6 +35,49 @@ int add_mainboard_resources(struct lb_memory *mem)
return add_northbridge_resources(mem);
}
#if CONFIG_PCI_OPTION_ROM_RUN_YABEL
static int int15_handler(void)
{
#define BOOT_DISPLAY_DEFAULT 0
#define BOOT_DISPLAY_CRT (1 << 0)
#define BOOT_DISPLAY_TV (1 << 1)
#define BOOT_DISPLAY_EFP (1 << 2)
#define BOOT_DISPLAY_LCD (1 << 3)
#define BOOT_DISPLAY_CRT2 (1 << 4)
#define BOOT_DISPLAY_TV2 (1 << 5)
#define BOOT_DISPLAY_EFP2 (1 << 6)
#define BOOT_DISPLAY_LCD2 (1 << 7)
printk_debug("%s: AX=%04x BX=%04x CX=%04x DX=%04x\n",
__func__, M.x86.R_AX, M.x86.R_BX, M.x86.R_CX, M.x86.R_DX);
switch (M.x86.R_AX) {
case 0x5f35: /* Boot Display */
M.x86.R_AX = 0x005f; // Success
M.x86.R_CL = BOOT_DISPLAY_DEFAULT;
break;
case 0x5f40: /* Boot Panel Type */
// M.x86.R_AX = 0x015f; // Supported but failed
M.x86.R_AX = 0x005f; // Success
M.x86.R_CL = 3; // Display ID
break;
default:
/* Interrupt was not handled */
return 0;
}
/* Interrupt handled */
return 1;
}
static void int15_install(void)
{
typedef int (* yabel_handleIntFunc)(void);
extern yabel_handleIntFunc yabel_intFuncArray[256];
yabel_intFuncArray[0x15] = int15_handler;
}
#endif
/* Hardware Monitor */
static u16 hwm_base = 0xa00;
@ -182,8 +226,13 @@ static void verb_setup(void)
// mainboard_enable is executed as first thing after
// enumerate_buses().
static void mainboard_enable(device_t dev)
{
#if CONFIG_PCI_OPTION_ROM_RUN_YABEL
/* Install custom int15 handler for VGA OPROM */
int15_install();
#endif
verb_setup();
hwm_setup();
}