From 73fb9b4cd8d1b1722077985594e50dd38893ca5f Mon Sep 17 00:00:00 2001
From: Joshua Wise <joshua@rebirth.joshuawise.com>
Date: Thu, 25 Sep 2008 21:41:58 -0400
Subject: [PATCH] Add gbl_rls handler

---
 aseg/counter.c  |  9 +++++++++
 aseg/firstrun.c |  4 ++++
 ich2/smi.c      | 15 ++++++++++++++-
 include/smi.h   |  1 +
 4 files changed, 28 insertions(+), 1 deletion(-)

diff --git a/aseg/counter.c b/aseg/counter.c
index 3c22c05..4c53b59 100644
--- a/aseg/counter.c
+++ b/aseg/counter.c
@@ -65,6 +65,15 @@ void kbc_handler(smi_event_t ev)
 	pci_dump();
 }
 
+void gbl_rls_handler(smi_event_t ev)
+{
+	unsigned long ecx;
+	
+	ecx = *(unsigned char*)0xAFFD4;
+	dologf("ECX was %08x", ecx);
+	*(unsigned long*)0xAFFD4 = 0x2BADD00D;
+}
+
 void smi_entry(void)
 {
 	char statstr[512];
diff --git a/aseg/firstrun.c b/aseg/firstrun.c
index ec09a82..e0e2904 100644
--- a/aseg/firstrun.c
+++ b/aseg/firstrun.c
@@ -9,6 +9,7 @@ extern int _bss, _bssend;
 
 extern void timer_handler(smi_event_t ev);
 extern void kbc_handler(smi_event_t ev);
+extern void gbl_rls_handler(smi_event_t ev);
 
 void __firstrun_start() {
 	unsigned char *bp;
@@ -36,6 +37,9 @@ void __firstrun_start() {
 	
 	smi_register_handler(SMI_EVENT_DEVTRAP_KBC, kbc_handler);
 	smi_enable_event(SMI_EVENT_DEVTRAP_KBC);
+	
+	smi_register_handler(SMI_EVENT_GBL_RLS, gbl_rls_handler);
+	smi_enable_event(SMI_EVENT_GBL_RLS);
 
 	smi_enable();
 	
diff --git a/ich2/smi.c b/ich2/smi.c
index 0a0ddf4..7f96421 100644
--- a/ich2/smi.c
+++ b/ich2/smi.c
@@ -42,7 +42,10 @@ void smi_poll()
 	
 	if (sts & ICH2_SMI_STS_BIOS_STS)
 	{
-		output("Unhandled: BIOS_STS");
+		if (_handlers[SMI_EVENT_GBL_RLS] == SMI_HANDLER_NONE)
+			output("Unhandled: BIOS_STS");
+		else if (_handlers[SMI_EVENT_GBL_RLS] != SMI_HANDLER_IGNORE)
+			_handlers[SMI_EVENT_GBL_RLS](SMI_EVENT_GBL_RLS);
 		outl(_get_PMBASE() + ICH2_PMBASE_SMI_STS, ICH2_SMI_STS_BIOS_STS);
 	}
 	
@@ -205,6 +208,11 @@ int smi_enable_event(smi_event_t ev)
 			inl(_get_PMBASE() + ICH2_PMBASE_DEVTRAP_EN) |
 				ICH2_DEVTRAP_EN_KBC_TRP_EN);
 		return 0;
+	case SMI_EVENT_GBL_RLS:
+		outl(_get_PMBASE() + ICH2_PMBASE_SMI_EN,
+			inl(_get_PMBASE() + ICH2_PMBASE_SMI_EN) |
+				ICH2_SMI_EN_BIOS_EN);
+		return 0;
 	default:
 		return -1;
 	}
@@ -224,6 +232,11 @@ int smi_disable_event(smi_event_t ev)
 			inl(_get_PMBASE() + ICH2_PMBASE_DEVTRAP_EN) &
 				~ICH2_DEVTRAP_EN_KBC_TRP_EN);
 		return 0;
+	case SMI_EVENT_GBL_RLS:
+		outl(_get_PMBASE() + ICH2_PMBASE_SMI_EN,
+			inl(_get_PMBASE() + ICH2_PMBASE_SMI_EN) &
+				~ICH2_SMI_EN_BIOS_EN);
+		return 0;
 	default:
 		return -1;
 	}
diff --git a/include/smi.h b/include/smi.h
index e0fd0a0..69fd7ef 100644
--- a/include/smi.h
+++ b/include/smi.h
@@ -10,6 +10,7 @@ extern unsigned long smi_status();	/* Architecturally defined; for debugging onl
 typedef enum {
 	SMI_EVENT_FAST_TIMER = 0,
 	SMI_EVENT_DEVTRAP_KBC,
+	SMI_EVENT_GBL_RLS,
 	SMI_EVENT_MAX
 } smi_event_t;
 
-- 
2.43.0