renamed two files in src/core1:

- code_2BD0 -> pimanager
- code_31C0 -> initthread

src/core1/pimanager.c

@@ -0,0 +1,44 @@
+#include <ultra64.h>
+#include "functions.h"
+#include "variables.h"
+#include "version.h"
+
+#define PIMGR_MESGBUFFER_SIZE 16
+
+OSIoMesg sPiMgrIOMesg;
+
+struct {
+    OSMesg mesg;
+    OSMesgQueue queue;
+} sPiMgrReadMesg;
+
+OSMesg sPiMgrMesgBuffer[PIMGR_MESGBUFFER_SIZE];
+OSMesgQueue sPiMgrMesgQueue;
+
+void piMgr_read(void *vaddr, s32 devaddr, s32 size) {
+    s32 block_cnt;
+    s32 block_remainder;
+    s32 block_size = VER_SELECT(0x20000, 0x8000, 0, 0);
+    int i;
+
+    osWritebackDCache(vaddr, size);
+    block_cnt       = size / block_size;
+    block_remainder = size % block_size;
+
+    for(i = 0; i < block_cnt; i++){
+        osPiStartDma(&sPiMgrIOMesg, OS_MESG_PRI_NORMAL, OS_READ, devaddr, vaddr, VER_SELECT(0x20000, 0x8000, 0, 0), &sPiMgrReadMesg.queue);
+        osRecvMesg(&sPiMgrReadMesg.queue, NULL, 1);
+        devaddr += VER_SELECT(0x20000, 0x8000, 0, 0);
+        vaddr = (u32 *) vaddr + VER_SELECT(0x8000, 0x2000, 0, 0);
+    }
+
+    osPiStartDma(&sPiMgrIOMesg, OS_MESG_PRI_NORMAL, OS_READ, devaddr, vaddr, block_remainder, &sPiMgrReadMesg.queue);
+    osRecvMesg(&sPiMgrReadMesg.queue, NULL, 1);
+    osInvalDCache(vaddr, size);
+}
+
+void piMgr_init(void) {
+    osCreateMesgQueue(&sPiMgrReadMesg.queue, &sPiMgrReadMesg.mesg, 1);
+    osCreateMesgQueue(&sPiMgrMesgQueue, sPiMgrMesgBuffer, PIMGR_MESGBUFFER_SIZE);
+    osCreatePiManager(OS_PRIORITY_PIMGR, &sPiMgrMesgQueue, sPiMgrMesgBuffer, PIMGR_MESGBUFFER_SIZE);
+}