Get the Nano2G bootloader running - it now runs and displays a logo on one type of Nano2G LCD.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@21900 a1c6a512-1295-4272-9138-f99709370657

bootloader/SOURCES

@@ -54,4 +54,5 @@ lyre_proto1.c
 show_logo.c
 #elif defined(IPOD_NANO2G)
 ipodnano2g.c
+show_logo.c
 #endif

bootloader/ipodnano2g.c

@@ -7,7 +7,7 @@
  *                     \/            \/     \/    \/            \/
  * $Id$
  *
- * Copyright (C) 2009 by ???? [to be completed by first author]
+ * Copyright (C) 2009 by Dave Chapman
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License
@@ -46,8 +46,15 @@
 
 char version[] = APPSVERSION;
 
+/* Show the Rockbox logo - in show_logo.c */
+extern int show_logo(void);
+
 void main(void)
 {
+    lcd_init();
+
+    show_logo();
+
     /* Do nothing... */
     while(1);
 }

firmware/target/arm/s5l8700/crt0.S

@@ -45,10 +45,12 @@ _newstart:
 newstart2:
     msr     cpsr_c, #0xd3 /* enter supervisor mode, disable IRQ/FIQ */
 
+#ifdef ROCKBOX_BIG_ENDIAN
     mov r1, #0x80
     mrc 15, 0, r0, c1, c0, 0
     orr r0, r0, r1
     mcr 15, 0, r0, c1, c0, 0 // set bigendian
+#endif
 			 
     ldr r1, =0x3c800000 // disable watchdog
     mov r0, #0xa5
@@ -80,6 +82,7 @@ newstart2:
 //    orr r0, r0, r2
 //    str r0, [r1] // switch backlight on
 
+#if CONFIG_CPU==S5L8700
     ldr r1, =0x3c500000 // CLKCON
     ldr r0, =0x00800080
     str r0, [r1]
@@ -232,6 +235,7 @@ newstart2:
     ldrhi   r1, [r4], #4
     strhi   r1, [r2], #4
     bhi     1b
+#endif
 
     /* Initialise bss section to zero */
     ldr     r2, =_edata
@@ -242,6 +246,7 @@ newstart2:
     strhi   r4, [r2], #4
     bhi     1b
 
+#if CONFIG_CPU==S5L8700
     /* Copy icode and data to ram */
     ldr     r2, =_datastart
     ldr     r3, =_dataend
@@ -251,6 +256,7 @@ newstart2:
     ldrhi   r1, [r4], #4
     strhi   r1, [r2], #4
     bhi     1b
+#endif
     
     /* Set up some stack and munge it with 0xdeadbeef */
     ldr     sp, =_stackend
@@ -281,6 +287,7 @@ newstart2:
 // if we did not switch remap on, device
 // would crash when MENU is pressed,
 // as that button is connected to BOOT_MODE pin
+#if CONFIG_CPU==S5L8700
     ldr r1, =0x38200000
     ldr r0, [r1]
     mvn r2, #0x10000
@@ -288,6 +295,7 @@ newstart2:
     mov r2, #0x1
     orr r0, r0, r2
     str r0, [r1] // remap iram to address 0x0
+#endif
 
     bl      main