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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
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79
src/devices/oprom/x86.c
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@ -92,8 +92,8 @@ static int intXX_exception_handler(struct eregs *regs)
static int intXX_unknown_handler(struct eregs *regs) static int intXX_unknown_handler(struct eregs *regs)
{ {
printk(BIOS_INFO, "Unsupported software interrupt #0x%x\n", printk(BIOS_INFO, "Unsupported software interrupt #0x%x eax 0x%x\n",
regs->vector); regs->vector, regs->eax);
return -1; return -1;
} }
@ -104,6 +104,75 @@ void mainboard_interrupt_handlers(int intXX, void *intXX_func)
intXX_handler[intXX] = 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 int12_handler(struct eregs *regs);
int int15_handler(struct eregs *regs); int int15_handler(struct eregs *regs);
int int1a_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 * interrupt handlers, such as the int15
*/ */
switch (i) { switch (i) {
case 0x10:
intXX_handler[0x10] = &int10_handler;
break;
case 0x12: case 0x12:
intXX_handler[0x12] = &int12_handler; intXX_handler[0x12] = &int12_handler;
break; break;
case 0x15: case 0x15:
intXX_handler[0x15] = &int15_handler; intXX_handler[0x15] = &int15_handler;
break; break;
case 0x16:
intXX_handler[0x16] = &int16_handler;
break;
case 0x1a: case 0x1a:
intXX_handler[0x1a] = &int1a_handler; intXX_handler[0x1a] = &int1a_handler;
break; break;