[coreboot-gerrit] New patch to review for coreboot: 25dc6e2 kontron/ktqm77: Clean up int15 handler
Nico Huber (nico.h@gmx.de)
gerrit at coreboot.org
Thu Jul 10 10:23:06 CEST 2014
Nico Huber (nico.h at gmx.de) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/6249
-gerrit
commit 25dc6e2a0d2fc83dcb94f614c5ccaa3261064bdc
Author: Patrick Georgi <patrick.georgi at secunet.com>
Date: Fri Jun 27 12:17:17 2014 +0200
kontron/ktqm77: Clean up int15 handler
Worked out the purpose of more int15 calls and let them return
appropriate values. Also remove handlers for copy-pasted calls never
observed on this board.
Change-Id: I3d8c4ec5542bd19baca1dca83badc9b568779e1b
Signed-off-by: Nico Huber <nico.huber at secunet.com>
---
src/mainboard/kontron/ktqm77/mainboard.c | 80 +++++++++++++++++++++-----------
1 file changed, 54 insertions(+), 26 deletions(-)
diff --git a/src/mainboard/kontron/ktqm77/mainboard.c b/src/mainboard/kontron/ktqm77/mainboard.c
index b3dec20..fd9cbf1 100644
--- a/src/mainboard/kontron/ktqm77/mainboard.c
+++ b/src/mainboard/kontron/ktqm77/mainboard.c
@@ -97,40 +97,68 @@ static int int15_handler(void)
X86_ECX |= 0x0000; /* TODO: Make this configurable in NVRAM? */
res = 1;
break;
- case 0x5f70:
- switch ((X86_ECX >> 8) & 0xff) {
- case 0:
- /* Get Mux */
+ case 0x5f40:
+ /*
+ * Boot Panel Type Hook:
+ * BL(in): 00h = LFP, 01h = LFP2
+ * CL(out): panel type id in table: 1..16
+ */
+ if (0 == (X86_EBX & 0xff)) {
X86_EAX &= 0xffff0000;
- X86_EAX |= 0x005f;
- X86_ECX &= 0xffff0000;
- X86_ECX |= 0x0000;
+ X86_EAX |= 0x015f;
res = 1;
- break;
- case 1:
- /* Set Mux */
+ } else if (1 == (X86_EBX & 0xff)) {
X86_EAX &= 0xffff0000;
- X86_EAX |= 0x005f;
- X86_ECX &= 0xffff0000;
- X86_ECX |= 0x0000;
+ X86_EAX |= 0x015f;
res = 1;
- break;
- case 2:
- /* Get SG/Non-SG mode */
+ } else {
+ printk(BIOS_DEBUG,
+ "Unknown panel index %u "
+ "in INT15 function %04x!\n",
+ X86_EBX & 0xff, X86_EAX & 0xffff);
+ }
+ break;
+ case 0x5f52:
+ /*
+ * Panel Color Depth:
+ * 00h = 18 bit
+ * 01h = 24 bit
+ */
+ X86_EAX &= 0xffff0000;
+ X86_EAX |= 0x005f;
+ X86_ECX &= 0xffff0000;
+ X86_ECX |= 0x0001;
+ res = 1;
+ break;
+ case 0x5f14:
+ if ((X86_EBX & 0xffff) == 0x78f) {
+ /*
+ * Get Miscellaneous Status Hook:
+ * bit 2: AC power active?
+ * bit 1: lid closed?
+ * bit 0: docked?
+ */
X86_EAX &= 0xffff0000;
- X86_EAX |= 0x005f;
- X86_ECX &= 0xffff0000;
- X86_ECX |= 0x0000;
+ X86_EAX |= 0x015f;
res = 1;
- break;
- default:
- /* Interrupt was not handled */
- printk(BIOS_DEBUG, "Unknown INT15 5f70 function: 0x%02x\n",
- ((X86_ECX >> 8) & 0xff));
- return 1;
+ } else {
+ printk(BIOS_DEBUG,
+ "Unknown BX 0x%04x in INT15 function %04x!\n",
+ X86_EBX & 0xffff, X86_EAX & 0xffff);
}
break;
-
+ case 0x5f49:
+ /*
+ * Get Inverter Type and Polarity:
+ * EBX: backlight control brightness: 0..255
+ * ECX:
+ * 0 = Enable PWM inverted, 2 = Enable PWM
+ * 1 = Enable I2C inverted, 3 = Enable I2C
+ */
+ X86_EAX &= 0xffff0000;
+ X86_EAX |= 0x015f;
+ res = 1;
+ break;
default:
printk(BIOS_DEBUG, "Unknown INT15 function %04x!\n",
X86_EAX & 0xffff);
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