From 45fc98575a57dc9709c7a66a243b121c5f11bf2c Mon Sep 17 00:00:00 2001
From: Michal Idziorek <m.i@gmx.at>
Date: Mon, 1 Sep 2014 00:30:20 +0200
Subject: continued multiprocessing

---
 kernel/mp.c | 71 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++----
 1 file changed, 67 insertions(+), 4 deletions(-)

(limited to 'kernel')

diff --git a/kernel/mp.c b/kernel/mp.c
index 602aca2..fc6288c 100644
--- a/kernel/mp.c
+++ b/kernel/mp.c
@@ -3,6 +3,10 @@
 #include "x86.h"
 #include "../lib/logger/log.h"	// logger facilities
 
+#define FOOLOS_APIC_SPUR_INT 0x00f0
+#define FOOLOS_APIC_INT_COMMAND_LOW 0x0300
+#define FOOLOS_APIC_INT_COMMAND_HIGH 0x0310
+
 
 typedef struct mp_fps_struct
 {
@@ -47,15 +51,48 @@ typedef struct mp_config_struct
 
 
 
+typedef struct proc_struct
+{
+    uint8_t type; //0=processor
+    uint8_t apic_id;
+    uint8_t apic_ver;
+    uint8_t cpu_bits;
+    uint32_t cpu_sig;
+    uint32_t cpu_flags;
+
+}proc_entry;
+
+uint32_t local_apic;
+
+int processors;
+uint8_t apic_id[4];
+
 
-//entries are sorted, but we do not care.
+
+//entries are sorted. (otherwise ignore. bochs!)
 uint8_t *walk_mp_table(uint8_t *start_addr)
 {
+    /*
+    static int last=0;
+    if(*start_addr<last)return;
+    last=*start_addr;
+    */
+    
 
        	if(*start_addr==0x0||*start_addr==0x2)
 	     log(FOOLOS_MODULE_NAME,FOOLOS_LOG_INFO,"entry type: %d",*start_addr);
 
-	if(*start_addr==0x00)return start_addr+20;
+
+	if(*start_addr==0x00)
+	{
+	    proc_entry *pro=start_addr;
+	     log(FOOLOS_MODULE_NAME,FOOLOS_LOG_INFO,"local apic id: %02X",pro->apic_id);
+	     log(FOOLOS_MODULE_NAME,FOOLOS_LOG_INFO,"cpu enabled bit: %s",pro->cpu_bits&1?"yes":"no");
+	     log(FOOLOS_MODULE_NAME,FOOLOS_LOG_INFO,"bootstrap cpu bit: %s",pro->cpu_bits&2?"yes":"no");
+
+	    return start_addr+20;
+	}
+
 	return start_addr+8;
 }
 
@@ -65,6 +102,8 @@ void show_mp_conf(mp_config *addr)
 	uint32_t *buf_addr=buf;
 	*buf_addr=addr->sig;
 
+	processors=0;
+
 	log(FOOLOS_MODULE_NAME,FOOLOS_LOG_INFO,"mp_config tabel addr: %08X",addr);
 	log(FOOLOS_MODULE_NAME,FOOLOS_LOG_INFO,"mp_config signature: %s",buf);
 	log(FOOLOS_MODULE_NAME,FOOLOS_LOG_INFO,"mp_config version: %02X",addr->version);
@@ -72,6 +111,30 @@ void show_mp_conf(mp_config *addr)
 	log(FOOLOS_MODULE_NAME,FOOLOS_LOG_INFO,"mp_config local apic addr: 0x%08X",addr->local_apic);
 	log(FOOLOS_MODULE_NAME,FOOLOS_LOG_INFO,"mp_config tabel length: %d",addr->length);
 
+	local_apic=addr->local_apic;
+
+	//bsp (boot processor) enables its local apic
+	uint32_t *reg=addr->local_apic+FOOLOS_APIC_SPUR_INT;
+	*reg=0xffffffff; // all bits 1 and interrupt 255
+
+	reg=addr->local_apic+FOOLOS_APIC_INT_COMMAND_HIGH;
+	*reg=1<<24; // destination apic 1!
+
+	reg=addr->local_apic+FOOLOS_APIC_INT_COMMAND_LOW;
+	//*reg=(5<<8)&(1<<14)&99;
+	//*reg=(6<<8)|(1<<14)|1;
+	*reg=(5<<8)|(1<<14); // 101 INIT
+
+	uint16_t *startpos=0xa000;
+	*startpos=0xfeeb;
+
+	sleep(10);
+
+	log(FOOLOS_MODULE_NAME,FOOLOS_LOG_INFO,"STARTING proc 2");
+    
+	*reg=(6<<8)|(1<<14)|0xa; // 110 SIPI
+
+
 	uint8_t *start_addr=addr;
 	start_addr+=44;
 	for(int i=0;i<addr->entries;i++)
@@ -127,7 +190,7 @@ bool find_mp()
     {
 	if(check_mp(addr))
 	{
-	    log(FOOLOS_MODULE_NAME,FOOLOS_LOG_INFO,"Found at 0x%04X",addr);
+	//    log(FOOLOS_MODULE_NAME,FOOLOS_LOG_INFO,"Found at 0x%04X",addr);
 	    show_mp_fps(addr);
 	}
 	addr++;
@@ -138,7 +201,7 @@ bool find_mp()
     {
 	if(check_mp(addr))
 	{
-	    log(FOOLOS_MODULE_NAME,FOOLOS_LOG_INFO,"Found at 0x%04X",addr);
+	  //  log(FOOLOS_MODULE_NAME,FOOLOS_LOG_INFO,"Found at 0x%04X",addr);
 	    show_mp_fps(addr);
 	}
 	addr++;
-- 
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