ddr.c
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#include "ultra64.h"
#include "os_bb.h"
#include "bcp.h"
#include "ddr.h"
#include "nu64sys.h"
#include "graph.h"
#define PRINTF osSyncPrintf
/*
* Thread and stack structures
*/
char bootStack[STACKSIZE] __attribute__ ((aligned (8)));
static OSThread idleThread;
static char idleThreadStack[STACKSIZE] __attribute__ ((aligned (8)));
static OSThread mainThread;
static char mainThreadStack[STACKSIZE] __attribute__ ((aligned (8)));
static void idleproc(char *);
static void mainproc(char *);
static void run();
void
boot(void)
{
__osBbVideoPllInit(OS_TV_NTSC);
osInitialize();
osCreateThread(&idleThread, 1, (void(*)(void *))idleproc, (void *)0,
idleThreadStack+STACKSIZE, 8);
osStartThread(&idleThread);
}
static void
idleproc(char *argv) /* priority 8 */
{
osCreateViManager(OS_PRIORITY_VIMGR);
#if SCREEN_LOW
osViSetMode(&osViModeTable[OS_VI_NTSC_LPN1]);
#else
osViSetMode(&osViModeTable[OS_VI_NTSC_HPF1]);
#endif
/*
* The main thread's priority must be the same or lower than the original
* idle's thread priority. This allows the idle thread to change its
* priority to 0 before the main thread starts execution.
*/
osCreateThread(&mainThread, 3, (void(*)(void *))mainproc, argv,
mainThreadStack+STACKSIZE/8, (OSPri)7);
osStartThread(&mainThread);
osSetThreadPri(0, OS_PRIORITY_IDLE);
for(;;); /* idle thread */
}
static OSMesgQueue retraceMessageQ;
static OSMesg dummyMessage, retraceMessageBuf;
static u16 cfb[SCREEN_WD*SCREEN_HT] __attribute__((aligned(64)));
static void clear(u16 bg) {
int i;
for (i = 0; i < SCREEN_WD*SCREEN_HT; ++i) {
cfb[i] = bg;
}
}
static void
mainproc(char *argv) {
osCreateMesgQueue(&retraceMessageQ, &retraceMessageBuf, 1);
osViSetEvent(&retraceMessageQ, dummyMessage, 1);
osViBlack(1);
osViSwapBuffer(cfb);
clear(0);
osViBlack(0);
osWritebackDCacheAll();
osViSwapBuffer(cfb);
run();
for(;;) ;
}
/*
* Start somewhere above the program and framebuffer
*/
#define DDR_X36_START (K0BASE + 0x100000)
#define DDR_X36_END (K0BASE | 0x00800000)
#define DDR_X64_START ((K0BASE | 0x01000000) + 0x100000)
#define DDR_X64_END (K0BASE | 0x02000000)
static void run(void)
{
vu32 *p, *e;
int nFailures = 0;
char buf[512];
int loops = 0;
while (1) {
loops++;
sprintf(buf, "DDR Test %d, Failures %d", loops, nFailures);
printstr(white, 3, 6, buf);
osWritebackDCacheAll();
p = (vu32*) DDR_X36_START;
e = (vu32*) DDR_X36_END;
while (p<e) *p++ = (vu32) p;
p = (vu32*) DDR_X36_START;
e = (vu32*) DDR_X36_END;
while (p<e) {
if (*p != (vu32) p) {
nFailures++;
sprintf(buf, "DDR36 Fail: exp %08lx got %08lx", (u32) p, *p);
printstr(white, 3, 7, buf);
osWritebackDCacheAll();
break;
}
p++;
}
p = (vu32*) DDR_X36_START;
e = (vu32*) DDR_X36_END;
while (p<e) *p++ = ~((vu32) p);
p = (vu32*) DDR_X36_START;
e = (vu32*) DDR_X36_END;
while (p<e) {
if (*p != (~((vu32) p))) {
nFailures++;
sprintf(buf, "DDR36 Fail: exp %08lx got %08lx", ~((vu32) p), *p);
printstr(white, 3, 7, buf);
osWritebackDCacheAll();
break;
}
p++;
}
p = (vu32*) DDR_X64_START;
e = (vu32*) DDR_X64_END;
while (p<e) *p++ = (vu32) p;
p = (vu32*) DDR_X64_START;
e = (vu32*) DDR_X64_END;
while (p<e) {
if (*p != (vu32) p) {
nFailures++;
sprintf(buf, "DDR64 Fail: exp %08lx got %08lx", (u32) p, (u32) *p);
printstr(white, 3, 7, buf);
osWritebackDCacheAll();
break;
}
p++;
}
p = (vu32*) DDR_X64_START;
e = (vu32*) DDR_X64_END;
while (p<e) *p++ = ~((vu32)p);
p = (vu32*) DDR_X64_START;
e = (vu32*) DDR_X64_END;
while (p<e) {
if (*p != (~((vu32) p))) {
sprintf(buf, "DDR36 Fail: exp %08lx got %08lx", (u32) ~((vu32) p), (u32) *p);
printstr(white, 3, 7, buf);
osWritebackDCacheAll();
break;
}
*p++;
}
}
}