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authorMyles Watson <mylesgw@gmail.com>2010-09-09 14:42:58 +0000
committerMyles Watson <mylesgw@gmail.com>2010-09-09 14:42:58 +0000
commitf53eaa39662b614763035031bd2586176c43c85c (patch)
treeeb90a7d5e9c68560d477a38880dcb3dc89d839a4 /src
parente150e9a5717235878e491157721966f446d6c66b (diff)
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
Diffstat (limited to 'src')
-rw-r--r--src/devices/oprom/x86.c79
1 files changed, 77 insertions, 2 deletions
diff --git a/src/devices/oprom/x86.c b/src/devices/oprom/x86.c
index 60776f68ea..adbb5fd776 100644
--- a/src/devices/oprom/x86.c
+++ b/src/devices/oprom/x86.c
@@ -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;