sys_initial_check OK (#129)

* initial commit

* almost matching, need to figure out segment stuff

* fully matching

* file description

* m_std_dma

8 files changed, 100 insertions, 11 deletions

diff --git a/include/c_keyframe.h b/include/c_keyframe.h
index 26a00c7..7226579 100644
--- a/include/c_keyframe.h
+++ b/include/c_keyframe.h
@@ -3,6 +3,7 @@
 
 #include "ultra64.h"
 #include "z64math.h"
+#include "unk.h"
 
 struct Game_Play;
 
diff --git a/include/fault.h b/include/fault.h
index 6cd6e30..0e33987 100644
--- a/include/fault.h
+++ b/include/fault.h
@@ -28,6 +28,8 @@
 #define FAULT_ESC '\x1A'
 #define FAULT_COLOR(n) "\x1A" FAULT_COLOR_EXPAND_AND_STRINGIFY(FAULT_COLOR_ ## n)
 
+// Address at the end of "non-expansion" memory space
+#define FAULT_FB_ADDRESS (void*)((PHYS_TO_K0(0x400000) - SCREEN_HEIGHT * SCREEN_WIDTH * sizeof(u16)))
 
 typedef void (*FaultClientCallback)(void*, void*);
 
diff --git a/include/segment_symbols.h b/include/segment_symbols.h
index 544c1b7..7d7cbc1 100644
--- a/include/segment_symbols.h
+++ b/include/segment_symbols.h
@@ -97,6 +97,8 @@ DECLARE_SEGMENT(catalog_ovl);
 DECLARE_SEGMENT(ac_set_ovl_insect);
 DECLARE_SEGMENT(ac_set_ovl_gyoei);
 
+DECLARE_SEGMENT(locerrmsg);
+
 DECLARE_SEGMENT(segment_00A58000);
 
 DECLARE_SEGMENT(segment_00E02000);
diff --git a/include/tables/dmatables/dmadata_table_jp.h b/include/tables/dmatables/dmadata_table_jp.h
index d66685b..76aa51a 100644
--- a/include/tables/dmatables/dmadata_table_jp.h
+++ b/include/tables/dmatables/dmadata_table_jp.h
@@ -1854,7 +1854,7 @@ DEFINE_DMA_ENTRY(segment_009F5000, "segment_009F5000")
 DEFINE_DMA_ENTRY(segment_00A00000, "segment_00A00000")
 DEFINE_DMA_ENTRY(segment_00A0B000, "segment_00A0B000")
 DEFINE_DMA_ENTRY(segment_00A16000, "segment_00A16000")
-DEFINE_DMA_ENTRY(segment_00A21000, "segment_00A21000")
+DEFINE_DMA_ENTRY(locerrmsg, "locerrmsg")
 DEFINE_DMA_ENTRY(gameplay_keep, "gameplay_keep")
 DEFINE_DMA_ENTRY(segment_00A30000, "segment_00A30000")
 DEFINE_DMA_ENTRY(segment_00A40000, "segment_00A40000")
diff --git a/linker_scripts/jp/symbol_addrs_code.txt b/linker_scripts/jp/symbol_addrs_code.txt
index 9803eee..63b1ae8 100644
--- a/linker_scripts/jp/symbol_addrs_code.txt
+++ b/linker_scripts/jp/symbol_addrs_code.txt
@@ -3564,12 +3564,12 @@ func_800D9788_jp = 0x800D9788; // type:func
 func_800D97A0_jp = 0x800D97A0; // type:func
 func_800D97F8_jp = 0x800D97F8; // type:func
 func_800D986C_jp = 0x800D986C; // type:func
-func_800D9890_jp = 0x800D9890; // type:func
-func_800D98C0_jp = 0x800D98C0; // type:func
-func_800D9900_jp = 0x800D9900; // type:func
-func_800D99F0_jp = 0x800D99F0; // type:func
-func_800D9A6C_jp = 0x800D9A6C; // type:func
-func_800D9B44_jp = 0x800D9B44; // type:func
+Check_WriteRGBA16Pixel = 0x800D9890; // type:func
+Check_WriteI4Pixel = 0x800D98C0; // type:func
+Check_DrawI4Texture = 0x800D9900; // type:func
+Check_ClearRGBA16 = 0x800D99F0; // type:func
+Check_DrawRegionLockErrorMessage = 0x800D9A6C; // type:func
+Check_RegionIsSupported = 0x800D9B44; // type:func
 reverse_u32 = 0x800D9BA0; // type:func
 init_rnd = 0x800D9C30; // type:func
 ffact = 0x800D9C60; // type:func
diff --git a/src/code/sys_initial_check.c b/src/code/sys_initial_check.c
new file mode 100644
index 0000000..dbaf917
--- /dev/null
+++ b/src/code/sys_initial_check.c
@@ -0,0 +1,82 @@
+/**
+ * @file sys_initial_check.c
+ * Functions for checking the TV type (PAL/NTSC/MPAL), and printing an error message to the screen if it's not NTSC
+ */
+
+#include "color.h"
+#include "macros.h"
+#include "m_std_dma.h"
+#include "segment_symbols.h"
+#include "fault.h"
+
+void Check_WriteRGBA16Pixel(u16* buffer, u32 x, u32 y, u32 value) {
+    if (value & RGBA16_PIXEL_OPAQUE) {
+        (&buffer[x])[y * SCREEN_WIDTH] = value;
+    }
+}
+
+void Check_WriteI4Pixel(u16* buffer, u32 x, u32 y, u32 value) {
+    Check_WriteRGBA16Pixel(buffer, x, y, value * GPACK_RGBA5551(16, 16, 16, 0) + GPACK_RGBA5551(12, 12, 12, 1));
+}
+
+void Check_DrawI4Texture(u16* buffer, s32 x, s32 y, s32 width, s32 height, u8* texture) {
+    s32 v;
+    s32 u;
+    u8 pixelPair;
+    u8* pixelPairPointer = texture;
+
+    for (v = 0; v < height; v++) {
+        for (u = 0; u < width; u += 2, pixelPairPointer++) {
+            pixelPair = *pixelPairPointer;
+            Check_WriteI4Pixel(buffer, x + u, y + v, pixelPair >> 4);
+            pixelPair = *pixelPairPointer;
+            Check_WriteI4Pixel(buffer, x + u + 1, y + v, pixelPair & 0xF);
+        }
+    }
+}
+
+void Check_ClearRGBA16(u16* buffer) {
+    u32 x;
+    u32 y;
+
+    for (y = 0; y < SCREEN_HEIGHT; y++) {
+        for (x = 0; x < SCREEN_WIDTH; x++) {
+            Check_WriteRGBA16Pixel(buffer, x, y, 1);
+        }
+    }
+}
+
+#define ERROR_TEXTURE_WIDTH 208
+#define ERROR_TEXTURE_HEIGHT 16
+#define ERROR_TEXTURE_SIZE (ERROR_TEXTURE_WIDTH * ERROR_TEXTURE_HEIGHT / 2)
+#define ERROR_TEXTURE_VRAM (u8*)((uintptr_t)FAULT_FB_ADDRESS - ERROR_TEXTURE_SIZE)
+u8 Check_ErrorTextureYCoords[] = { 112, 0 };
+
+void Check_DrawRegionLockErrorMessage(void) {
+    s32 i;
+
+    DmaMgr_RequestSyncDebug(ERROR_TEXTURE_VRAM, SEGMENT_ROM_START(locerrmsg), SEGMENT_VRAM_SIZE(locerrmsg),
+                            "../sys_initial_check.c", 130);
+    Check_ClearRGBA16(FAULT_FB_ADDRESS);
+    for (i = 0; i < 1; i++) {
+        Check_DrawI4Texture(FAULT_FB_ADDRESS, 56, Check_ErrorTextureYCoords[i], ERROR_TEXTURE_WIDTH,
+                            ERROR_TEXTURE_HEIGHT, ERROR_TEXTURE_VRAM + i * ERROR_TEXTURE_SIZE);
+    }
+    osWritebackDCacheAll();
+    osViSwapBuffer(FAULT_FB_ADDRESS);
+    osViBlack(false);
+}
+
+void Check_RegionIsSupported(void) {
+    s32 regionSupported = false;
+
+    if (osTvType == OS_TV_NTSC) {
+        regionSupported = true;
+    }
+
+    if (!regionSupported) {
+        Check_DrawRegionLockErrorMessage();
+        osDestroyThread(NULL);
+        while (true) {};
+    }
+}
diff --git a/yamls/jp/assets.yaml b/yamls/jp/assets.yaml
index 739f34c..92e3a40 100644
--- a/yamls/jp/assets.yaml
+++ b/yamls/jp/assets.yaml
@@ -62,10 +62,10 @@
     align: 0x1000
   - [0xA20010]
 
-  - name: segment_00A21000
+  - name: locerrmsg
     type: bin
     start: 0xA21000
-    # vram:
+    vram: 0x01000000
     compress: True
     align: 0x1000
   - [0xA21680]
diff --git a/yamls/jp/code.yaml b/yamls/jp/code.yaml
index 36cd56c..b7be5bf 100644
--- a/yamls/jp/code.yaml
+++ b/yamls/jp/code.yaml
@@ -104,7 +104,7 @@
       - [0x6FB340, asm, code/6FB340]
       - [0x6FC540, asm, code/speed_meter]
       - [0x6FD190, asm, code/6FD190]
-      - [0x6FD530, asm, code/sys_initial_check]
+      - [0x6FD530, c, code/sys_initial_check]
       - [0x6FD840, asm, code/sys_math]
       - [0x6FDC40, asm, code/sys_math3d]
       - [0x703C30, c, code/sys_math_atan]
@@ -169,6 +169,8 @@
       - [0x732C70, .data, code/lb_rtc]
       - [0x732C80, .data, code/lb_reki]
       - [0x733080, data, code/733080]
+      - [0x7330F0, .data, code/sys_initial_check]
+      - [0x733100, data, code/733100]
       - [0x733160, .data, code/sys_math_atan]
       - [0x733970, .data, code/sys_matrix]
       - [0x7339F0, .data, code/sys_ucode]
@@ -242,7 +244,7 @@
       - [0x73BB80, rodata, code/73BB80]
       - [0x73BCA0, rodata, code/73BCA0]
       - [0x73BD20, rodata, code/73BD20]
-      - [0x73BD30, rodata, code/73BD30]
+      - [0x73BD30, .rodata, code/sys_initial_check]
       - [0x73BD50, rodata, code/73BD50]
       - [0x73BD70, rodata, code/sys_math3d]
       - [0x73BE00, .rodata, code/sys_math_atan]