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

My Jmicron SATA card writes the name of the hard drive to the screen. 

This redirects that output to the console and implements a basic
keyboard stub.

Signed-off-by: Myles Watson <mylesgw@gmail.com>
Acked-by: Patrick Georgi <patrick.georgi@coresystems.de>


git-svn-id: svn://svn.coreboot.org/coreboot/trunk@5793 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
This commit is contained in:
Myles Watson 2010-09-09 14:42:58 +00:00
parent e150e9a571
commit f53eaa3966
1 changed files with 77 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

79
src/devices/oprom/x86.c
View File

@ -92,8 +92,8 @@ static int intXX_exception_handler(struct eregs *regs)
static int intXX_unknown_handler(struct eregs *regs)
{
printk(BIOS_INFO, "Unsupported software interrupt #0x%x\n",
regs->vector);
printk(BIOS_INFO, "Unsupported software interrupt #0x%x eax 0x%x\n",
regs->vector, regs->eax);
return -1;
}
@ -104,6 +104,75 @@ void mainboard_interrupt_handlers(int intXX, void *intXX_func)
intXX_handler[intXX] = intXX_func;
}
static int int10_handler(struct eregs *regs)
{
int res=-1;
static u8 cursor_row=0, cursor_col=0;
switch((regs->eax & 0xff00)>>8) {
case 0x01: // Set cursor shape
res = 0;
break;
case 0x02: // Set cursor position
if (cursor_row != ((regs->edx >> 8) & 0xff) ||
cursor_col >= (regs->edx & 0xff)) {
printk(BIOS_INFO, "\n");
}
cursor_row = (regs->edx >> 8) & 0xff;
cursor_col = regs->edx & 0xff;
res = 0;
break;
case 0x03: // Get cursor position
regs->eax &= 0x00ff;
regs->ecx = 0x0607;
regs->edx = (cursor_row << 8) | cursor_col;
res = 0;
break;
case 0x06: // Scroll up
printk(BIOS_INFO, "\n");
res = 0;
break;
case 0x08: // Get Character and Mode at Cursor Position
regs->eax = 0x0f00 | 'A'; // White on black 'A'
res = 0;
break;
case 0x09: // Write Character and attribute
case 0x10: // Write Character
printk(BIOS_INFO, "%c", regs->eax & 0xff);
res = 0;
break;
case 0x0f: // Get video mode
regs->eax = 0x5002; //80x25
regs->ebx &= 0x00ff;
res = 0;
break;
default:
printk(BIOS_WARNING, "Unknown INT10 function %04x!\n",
regs->eax & 0xffff);
break;
}
return res;
}
static int int16_handler(struct eregs *regs)
{
int res=-1;
switch((regs->eax & 0xff00)>>8) {
case 0x00: // Check for Keystroke
regs->eax = 0x6120; // Space Bar, Space
res = 0;
break;
case 0x01: // Check for Keystroke
regs->eflags |= 1<<6; // Zero Flag set (no key available)
res = 0;
break;
default:
printk(BIOS_WARNING, "Unknown INT16 function %04x!\n",
regs->eax & 0xffff);
break;
}
return res;
}
int int12_handler(struct eregs *regs);
int int15_handler(struct eregs *regs);
int int1a_handler(struct eregs *regs);
@ -131,12 +200,18 @@ static void setup_interrupt_handlers(void)
* interrupt handlers, such as the int15
*/
switch (i) {
case 0x10:
intXX_handler[0x10] = &int10_handler;
break;
case 0x12:
intXX_handler[0x12] = &int12_handler;
break;
case 0x15:
intXX_handler[0x15] = &int15_handler;
break;
case 0x16:
intXX_handler[0x16] = &int16_handler;
break;
case 0x1a:
intXX_handler[0x1a] = &int1a_handler;
break;