From 5a01fba679330353ce293b2c744f55b2e51bea7d Mon Sep 17 00:00:00 2001
From: notaz <notaz@pixelinis>
Date: Tue, 9 Jun 2009 00:43:01 +0300
Subject: [PATCH] u4 release

---
 gp2x/gp2x.c          | 70 ++++++++++++++++++++++++++------------------
 gp2x/readme_gp2x.txt | 26 +++++++++++-----
 input.c              |  4 +--
 3 files changed, 63 insertions(+), 37 deletions(-)

diff --git a/gp2x/gp2x.c b/gp2x/gp2x.c
index eeefcf6..482eb17 100644
--- a/gp2x/gp2x.c
+++ b/gp2x/gp2x.c
@@ -122,9 +122,32 @@ static void fb_video_exit()
 }
 #endif
 
-void gp2x_init()
+static int get_romdir(char *buff, size_t size)
 {
   FILE *f;
+  char *s;
+  int r = -1;
+  
+  f = fopen("romdir.txt", "r");
+  if (f == NULL)
+    return -1;
+
+  s = fgets(buff, size, f);
+  if (s)
+  {
+    r = strlen(s);
+    while (r > 0 && isspace(buff[r-1]))
+      buff[--r] = 0;
+  }
+
+  fclose(f);
+  return r;
+}
+
+void gp2x_init()
+{
+  char buff[256];
+
   gpsp_gp2x_dev = open("/dev/mem",   O_RDWR);
   gpsp_gp2x_dev_audio = open("/dev/mixer", O_RDWR);
   gpsp_gp2x_memregl =
@@ -137,39 +160,28 @@ void gp2x_init()
   fb_video_init();
 #endif
 
-  f = fopen("romdir.txt", "r");
-  if (f != NULL)
-  {
-    char buff[256];
-    char *s = fgets(buff, sizeof(buff) - 1, f);
-    if (s)
-    {
-      int r = strlen(s);
-      while (r > 0 && isspace(buff[r-1]))
-        buff[--r] = 0;
-      chdir(buff);
-    }
-    fclose(f);
-  }
+  if (get_romdir(buff, sizeof(buff)) > 0)
+    chdir(buff);
 
   gp2x_sound_volume(1);
 }
 
-#include <errno.h>
 void gp2x_quit()
 {
-  char buff[256];
-  FILE *f;
+  char buff1[256], buff2[256];
 
-  getcwd(buff, sizeof(buff));
+  getcwd(buff1, sizeof(buff1));
   chdir(main_path);
-  f = fopen("romdir.txt", "r+");
-  if (f != NULL)
+  if (get_romdir(buff2, sizeof(buff2)) >= 0 &&
+    strcmp(buff1, buff2) != 0)
   {
-    fprintf(f, "%s", buff);
-    fclose(f);
-    truncate("romdir.txt", strlen(buff));
-    sync();
+    FILE *f = fopen("romdir.txt", "w");
+    if (f != NULL)
+    {
+      printf("writing romdir: %s\n", buff1);
+      fprintf(f, "%s", buff1);
+      fclose(f);
+    }
   }
 
   warm_finish();
@@ -182,9 +194,9 @@ void gp2x_quit()
   close(gpsp_gp2x_dev);
 
   fcloseall();
-  //chdir("/usr/gp2x");
-  //execl("gp2xmenu", "gp2xmenu", NULL);
-  exit(0);
+  sync();
+  chdir("/usr/gp2x");
+  execl("gp2xmenu", "gp2xmenu", NULL);
 }
 
 void gp2x_sound_volume(u32 volume_up)
@@ -247,6 +259,8 @@ void set_FCLK(u32 MHZ)
 
   gpsp_gp2x_memregl[0xf004>>2] = v;
   gpsp_gp2x_memregl[0xf07c>>2] |= 0x8000;
+  while (gpsp_gp2x_memregl[0xf07c>>2] & 0x8000)
+    ;
 #else
   #define SYS_CLK_FREQ 7372800
   // m = MDIV + 8, p = PDIV + 2, s = SDIV
diff --git a/gp2x/readme_gp2x.txt b/gp2x/readme_gp2x.txt
index a0af69d..04901a0 100644
--- a/gp2x/readme_gp2x.txt
+++ b/gp2x/readme_gp2x.txt
@@ -12,13 +12,17 @@ not apply however).
 
 Changelog:
 
-0.9-2xb u1 (unofficial notaz release):
-- Fixed a problen in thread synchronization which caused deadlock after
-  some time.
-
-0.9-2xb u2 (unofficial notaz release):
-- Replaced non-working mmuhack.o with proper one, added cache flush calls
-  to avoid artifacts.
+0.9-2xb u4 (unofficial notaz release, done on Exophase's request)
+- Wiz port. No emulation related changes.
+- Wiz: dropped SDL for video and hitting hardware directly (GPH SDL can't
+  be trusted, it doesn't do double buffering as of firmware 1.0).
+- Added new optimized software scaler with interpolation.
+- gpSP is now saving ROM dir on exit. Delete romdir.txt if you don't
+  want that.
+- gpSP now comes with wARM, new kernel module+lib for ARM cache control
+  (replaces mmuhack).
+- gpSP no longer invalidates whole icache after recompilation, might
+  case minor speedup.
 
 0.9-2xb u3 (unofficial notaz release, released with permission):
 - Removed built-in CPU/LCD/RAM-Tweaker.
@@ -29,6 +33,14 @@ Changelog:
 - Fixed centering-on-first-run problem.
 - 3:2 scaled option now does what it says.
 
+0.9-2xb u2 (unofficial notaz release):
+- Replaced non-working mmuhack.o with proper one, added cache flush calls
+  to avoid artifacts.
+
+0.9-2xb u1 (unofficial notaz release):
+- Fixed a problen in thread synchronization which caused deadlock after
+  some time.
+
 0.9-2xb: 
 -- IMPORTANT-- If you're overwriting an old version, be sure to delete the
    gpsp.cfg file first, or be prepared to have a bunch of weird button
diff --git a/input.c b/input.c
index cfaff69..153e6ac 100644
--- a/input.c
+++ b/input.c
@@ -364,10 +364,10 @@ u32 gamepad_config_map[16] =
   BUTTON_ID_SELECT,             // Select
   BUTTON_ID_L,                  // Ltrigger
   BUTTON_ID_R,                  // Rtrigger
-  BUTTON_ID_NONE,               // A
+  BUTTON_ID_FPS,                // A
   BUTTON_ID_A,                  // B
   BUTTON_ID_B,                  // X
-  BUTTON_ID_NONE,               // Y
+  BUTTON_ID_MENU,               // Y
   BUTTON_ID_VOLDOWN,            // Vol down
   BUTTON_ID_VOLUP,              // Vol up
   BUTTON_ID_FPS,                // Push
-- 
2.39.5