Initial commit

arm7/source/common.h

@@ -0,0 +1,2 @@
+#pragma once
+#include <nds/ndstypes.h>

arm7/source/main.cpp

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+#include "common.h"
+#include <libtwl/rtos/rtosIrq.h>
+#include <libtwl/rtos/rtosThread.h>
+#include <libtwl/rtos/rtosEvent.h>
+#include <libtwl/ipc/ipcSync.h>
+#include <libtwl/ipc/ipcFifoSystem.h>
+#include <libtwl/gfx/gfxStatus.h>
+#include "picoLoaderBootstrap.h"
+
+static rtos_event_t sVBlankEvent;
+
+static void vblankIrq(u32 irqMask)
+{
+    rtos_signalEvent(&sVBlankEvent);
+}
+
+int main()
+{
+    rtos_initIrq();
+    rtos_startMainThread();
+    ipc_initFifoSystem();
+
+    pload_init();
+
+    rtos_createEvent(&sVBlankEvent);
+    rtos_setIrqFunc(RTOS_IRQ_VBLANK, vblankIrq);
+    rtos_enableIrqMask(RTOS_IRQ_VBLANK);
+
+    gfx_setVBlankIrqEnabled(true);
+
+    ipc_setArm7SyncBits(7);
+
+    while (true)
+    {
+        rtos_waitEvent(&sVBlankEvent, true, true);
+
+        if (pload_shouldStart())
+        {
+            pload_start();
+        }
+    }
+
+    return 0;
+}

arm7/source/picoLoaderBootstrap.cpp

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+#include "common.h"
+#include <string.h>
+#include <libtwl/rtos/rtosIrq.h>
+#include <libtwl/ipc/ipcFifoSystem.h>
+#include <libtwl/sound/sound.h>
+#include "ipcChannels.h"
+#include "picoLoader7.h"
+#include "picoLoaderBootstrap.h"
+
+typedef void (*pico_loader_7_func_t)(void);
+
+static volatile bool sShouldStart = false;
+
+static void ipcMessageHandler(u32 channel, u32 data, void* arg)
+{
+    if (data == 1)
+    {
+        sShouldStart = true;
+    }
+}
+
+void pload_init()
+{
+    ipc_setChannelHandler(IPC_CHANNEL_LOADER, ipcMessageHandler, nullptr);
+}
+
+bool pload_shouldStart()
+{
+    return sShouldStart;
+}
+
+void pload_start()
+{
+    snd_setMasterEnable(false);
+    rtos_disableIrqs();
+    REG_IME = 0;
+    auto header7 = (pload_header7_t*)0x06000000;
+    ((pico_loader_7_func_t)header7->entryPoint)();
+}

arm7/source/picoLoaderBootstrap.h

@@ -0,0 +1,5 @@
+#pragma once
+
+void pload_init();
+bool pload_shouldStart();
+void pload_start();