polishing a bit

UEFI_fireworks.dsc

@@ -30,6 +30,8 @@ LocalApicLib|edk2/UefiCpuPkg/Library/BaseXApicLib/BaseXApicLib.inf
 CpuLib|edk2/MdePkg/Library/BaseCpuLib/BaseCpuLib.inf
 UefiRuntimeServicesTableLib|edk2/MdePkg/Library/UefiRuntimeServicesTableLib/UefiRuntimeServicesTableLib.inf
 TimerLib|edk2/MdePkg/Library/BaseTimerLibNullTemplate/BaseTimerLibNullTemplate.inf
+BmpSupportLib|edk2/MdeModulePkg/Library/BaseBmpSupportLib/BaseBmpSupportLib.inf
+SafeIntLib|edk2/MdePkg/Library/BaseSafeIntLib/BaseSafeIntLib.inf
 
 [Components]
   src/UEFI_fireworks/UEFI_fireworks.inf

build.sh

@@ -1,5 +1,6 @@
 #!/bin/bash
 export PACKAGES_PATH=$PWD:$PWD/edk2
+xxd -i assets/rocket.bmp > src/UEFI_fireworks/rocket.c
 if [ "$1" == "debug" ]; then
     build -a X64 -t GCC5 -p UEFI_fireworks.dsc -b DEBUG
 else

src/UEFI_fireworks/UEFI_fireworks.inf

@@ -11,6 +11,7 @@
   drawing.c
   rng.c
   time.c
+  rocket.c
 
 [Packages]
   edk2/MdePkg/MdePkg.dec
@@ -30,6 +31,7 @@
   RngLib
   SerialPortLib
   UefiRuntimeServicesTableLib
+  BmpSupportLib
 
 [Protocols]
   gEfiRngProtocolGuid

src/UEFI_fireworks/UefiMain.c

@@ -1,11 +1,12 @@
-#include "Library/UefiApplicationEntryPoint.h"
 #include "ProcessorBind.h"
+#include "const.h"
 #include "drawing.h"
 #include "global.h"
 #include "macros.h"
 #include "rng.h"
 #include "time.h"
 #include "types.h"
+#include <../MdeModulePkg/Include/Library/BmpSupportLib.h>
 #include <Base.h>
 #include <Library/BaseLib.h>
 #include <Library/DebugLib.h>
@@ -18,6 +19,8 @@
 #include <Protocol/GraphicsOutput.h>
 #include <Uefi.h>
 #include <stdint.h>
+EFI_GRAPHICS_OUTPUT_BLT_PIXEL night_sky =
+    COLOR_FROM_HEX(0x11095e); // this cannot be const becose EDK2 said so
 
 firework_instance create_firework();
 EFI_GRAPHICS_OUTPUT_PROTOCOL *GraphicsOutput = NULL;
@@ -67,14 +70,14 @@ EFI_STATUS EFIAPI UefiMain(IN EFI_HANDLE imgHandle,
               0); // make all pointers null
 
   SERIAL_PRINT("DOES it work?\n");
-  Print(L"If you see this message timer does not work\n");
-  milisleep(100);
+  Print(L"If you see this message for long time, timer does not work\n");
+  milisleep(1);
   clear_screen();
 
   while (TRUE) {
     UINT8 random;
     fill_random_bytes(&random, sizeof(random));
-    if (random % 6 == 0) {
+    if (random % 30 == 0) {
       // spawn new firework
       firework_instance *new_firework_instence =
           AllocateZeroPool(sizeof(firework_instance));
@@ -85,7 +88,7 @@ EFI_STATUS EFIAPI UefiMain(IN EFI_HANDLE imgHandle,
       *new_firework_instence = create_firework();
 
       for (UINT8 i = 0; i < ARRAY_SIZE(firework_array); i++) {
-        if (firework_array[i] == NULL || firework_array[i]->active != TRUE) {
+        if (firework_array[i] == NULL || firework_array[i]->status != TRUE) {
           if (firework_array[i] != NULL) {
             FreePool(firework_array[i]); // free firework
             firework_array[i] = NULL;
@@ -99,9 +102,9 @@ EFI_STATUS EFIAPI UefiMain(IN EFI_HANDLE imgHandle,
   assgned:
     for (UINT8 i = 0; i < ARRAY_SIZE(firework_array); i++) {
       if (firework_array[i] != NULL) {
-        if (firework_array[i]->active == TRUE) {
+        if (firework_array[i]->status == ACTIVE) {
           if (!step_firework(firework_array[i])) {
-            firework_array[i]->active = FALSE;
+            firework_array[i]->status = INACTIVE;
           }
         } else {
           FreePool(firework_array[i]); // free firework
@@ -132,8 +135,9 @@ firework_instance create_firework() {
   fill_random_bytes(&random, sizeof(random));
   firework.x = random % GraphicsOutput->Mode->Info->HorizontalResolution;
   fill_random_bytes(&random, sizeof(random));
-  firework.y = random % GraphicsOutput->Mode->Info->VerticalResolution;
+  firework.y = random % GraphicsOutput->Mode->Info->VerticalResolution /
+               2; // spawn only on upper half of the screen
 
-  firework.active = TRUE;
+  firework.status = ACTIVE; // TODO set to LAUNCHING when implemented
   return firework;
 }

src/UEFI_fireworks/bmp.h

@@ -0,0 +1,3 @@
+#pragma once
+extern unsigned char assets_rocket_bmp[];
+extern unsigned int assets_rocket_bmp_len;

src/UEFI_fireworks/const.h

@@ -2,5 +2,6 @@
 #include "macros.h"
 #include <Protocol/GraphicsOutput.h>
 
-EFI_GRAPHICS_OUTPUT_BLT_PIXEL night_sky =
-    COLOR_FROM_HEX(0x11095e); // this cannot be const becose EDK2 said so
+extern EFI_GRAPHICS_OUTPUT_BLT_PIXEL night_sky;
+
+enum firework_status { INACTIVE, ACTIVE, LAUNCHING };

src/UEFI_fireworks/drawing.c

@@ -1,5 +1,4 @@
 #include "Base.h"
-#include "Library/UefiLib.h"
 #include "ProcessorBind.h"
 #include "const.h"
 #include "global.h"
@@ -105,3 +104,5 @@ BOOLEAN step_firework(firework_instance *firework) {
   }
   return TRUE;
 }
+
+BOOLEAN step_rocket(rocket_instance *rocket) {}

src/UEFI_fireworks/rng.c

@@ -2,12 +2,14 @@
 #include "Library/UefiBootServicesTableLib.h"
 #include "Library/UefiLib.h"
 #include "ProcessorBind.h"
+#include "Uefi/UefiBaseType.h"
 #include "time.h"
 #include <Library/BaseLib.h>
 #include <Library/RngLib.h>
 #include <Library/TimerLib.h>
 #include <Library/UefiRuntimeServicesTableLib.h>
 #include <Uefi.h>
+#include <stdint.h>
 void (*fill_random_bytes)(void *dst, UINTN n);
 
 UINT16 shift_LFSR(UINT16 LFSR) {
@@ -19,22 +21,6 @@ UINT16 shift_LFSR(UINT16 LFSR) {
   return LFSR;
 }
 
-void fill_random_bytes_LFSR(void *dst, UINTN n) {
-  static UINT16 LFSR = 0xf5d7;
-
-  if (n % 2 != 0) {
-    LFSR = shift_LFSR(LFSR);
-    *(UINT8 *)dst = (UINT8)LFSR;
-    dst++;
-    n--;
-  }
-  while (n != 0) {
-    LFSR = shift_LFSR(LFSR);
-    *(UINT16 *)dst = LFSR;
-    dst += 2;
-    n -= 2;
-  }
-}
 void fill_random_bytes_TRUE(void *dst, UINTN n) {
   UINT16 rand;
   if (n % 2 != 0) {
@@ -50,6 +36,21 @@ void fill_random_bytes_TRUE(void *dst, UINTN n) {
     n -= 2;
   }
 }
+UINT16 LFSR;
+void fill_random_bytes_LFSR(void *dst, UINTN n) {
+  if (n % 2 != 0) {
+    LFSR = shift_LFSR(LFSR);
+    *(UINT8 *)dst = (UINT8)LFSR;
+    dst++;
+    n--;
+  }
+  while (n != 0) {
+    LFSR = shift_LFSR(LFSR);
+    *(UINT16 *)dst = LFSR;
+    dst += 2;
+    n -= 2;
+  }
+}
 
 void init_rng() {
   UINT16 test_var;
@@ -59,12 +60,58 @@ void init_rng() {
     gST->ConOut->SetAttribute(gST->ConOut, EFI_YELLOW);
     Print(L"[WARNING]");
     gST->ConOut->SetAttribute(gST->ConOut, EFI_WHITE);
-    Print(L" RNG device not available falling back to LFSR\r\n");
+    Print(L" RNG device not available falling back to LFSR!\r\n");
 
-    Print(L"Continuing in  ");
-    for (UINT8 i = 5; i > 0; i--) {
-      Print(L"\b%d", i);
-      milisleep(1000);
+    EFI_TIME Time;
+    EFI_STATUS Status;
+    UINT32 starting;
+    Status = gRT->GetTime(&Time, NULL);
+    if (EFI_ERROR(Status)) {
+      Print(L"failed to get time\r\n");
+      milisleep(2000);
+      starting = 1;
+    } else {
+      starting = Time.Second;
+    }
+
+    Print(L"Press any key to seed the LFSR\r\n");
+    EFI_INPUT_KEY Key;
+    UINTN Index;
+    Status = gBS->WaitForEvent(1, &(gST->ConIn->WaitForKey), &Index);
+    if (EFI_ERROR(Status)) {
+      Print(L"failed to wait key\r\n");
+      Key.ScanCode = 1;
+      Key.UnicodeChar = 1;
+    } else {
+
+      Status = gST->ConIn->ReadKeyStroke(gST->ConIn, &Key);
+      if (EFI_ERROR(Status)) {
+        Print(L"failed to read key\r\n");
+        Key.ScanCode = 1;
+        Key.UnicodeChar = 1;
+      }
+    }
+    if (Key.ScanCode == 0) {
+      Key.ScanCode = 1;
+    }
+
+    Status = gRT->GetTime(&Time, NULL);
+    if (EFI_ERROR(Status)) {
+      Print(L"failed to get time\r\n");
+      Time.Second = 1;
+    }
+
+    UINT8 time_diff = (Time.Second - starting);
+    if (time_diff == 0) {
+      time_diff = 1;
+    }
+
+    LFSR = (typeof(LFSR))(((UINTN)Key.ScanCode * (UINTN)Key.UnicodeChar *
+                           (UINTN)(time_diff)) %
+                          UINT16_MAX);
+
+    if (LFSR <= 1) {
+      LFSR = 0xf5d7;
     }
 
     fill_random_bytes = fill_random_bytes_LFSR;

src/UEFI_fireworks/time.h

@@ -1,2 +1,2 @@
 #pragma once
-void milisleep(UINTN Milliseconds);
+void milisleep(UINTN n);

src/UEFI_fireworks/types.h

@@ -1,13 +1,21 @@
 #pragma once
 #include "ProcessorBind.h"
 #include "Protocol/GraphicsOutput.h"
+#include "const.h"
 #include <Library/BaseLib.h>
+
 typedef struct {
-  BOOLEAN active; // IF FALSE can be overwriten
+  UINT32 x;
+  UINT32 y;
+} rocket_instance;
+
+typedef struct {
+  enum firework_status status; // IF INACTIVE can be overwriten
   UINT32 x;
   UINT32 y;
   UINT16 max_r;
   UINT16 r[3];
   EFI_GRAPHICS_OUTPUT_BLT_PIXEL color[3];
   UINT16 cleanup_r;
+  rocket_instance rocket;
 } firework_instance;