fusee: Complete re-write of the hardware initialization code:

- Updated code to match hekate's;
- Improved nxboot (now boots firmwares 2.x successfully);
- Temporarily disabled built-in boot system module support;
- Fixed multiple bugs.

fusee/fusee-primary/src/main.c

@@ -2,8 +2,7 @@
 #include "exception_handlers.h"
 #include "panic.h"
 #include "hwinit.h"
-#include "fuse.h"
-#include "se.h"
+#include "di.h"
 #include "timers.h"
 #include "fs_utils.h"
 #include "stage2.h"
@@ -49,32 +48,15 @@ static const char *load_config(void) {
     return bct0;
 }
 
-static void load_sbk(void) {
-    uint32_t sbk[0x4];
-    /* Load the SBK into the security engine, if relevant. */
-    memcpy(sbk, (void *)get_fuse_chip_regs()->FUSE_PRIVATE_KEY, 0x10);
-    for (unsigned int i = 0; i < 4; i++) {
-        if (sbk[i] != 0xFFFFFFFF) {
-            set_aes_keyslot(0xE, sbk, 0x10);
-            break;
-        }
-    }
-}
-
 static void setup_env(void) {
     g_framebuffer = (void *)0xC0000000;
 
-    /* Initialize DRAM. */
-    /* TODO: What can be stripped out to make this minimal? */
+    /* Initialize hardware. */
     nx_hwinit();
 
     /* Check for panics. */
     check_and_display_panic();
 
-    /* Try to load the SBK into the security engine, if possible. */
-    /* TODO: Should this be done later? */
-    load_sbk();
-
     /* Zero-fill the framebuffer and register it as printk provider. */
     video_init(g_framebuffer);
 
@@ -86,7 +68,7 @@ static void setup_env(void) {
 
     /* Turn on the backlight after initializing the lfb */
     /* to avoid flickering. */
-    display_enable_backlight(true);
+    display_backlight(true);
 
     /* Set up the exception handlers. */
     setup_exception_handlers();
@@ -99,7 +81,7 @@ static void cleanup_env(void) {
     /* Unmount the SD card. */
     unmount_sd();
 
-    display_enable_backlight(false);
+    display_backlight(false);
     display_end();
 }
 
@@ -123,7 +105,7 @@ int main(void) {
     /* Say hello. */
     printk("Welcome to Atmosph\xe8re Fus\xe9" "e!\n");
     printk("Using color linear framebuffer at 0x%p!\n", g_framebuffer);
-    
+        
     /* Load the BCT0 configuration ini off of the SD. */
     bct0 = load_config();