Initial version

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@34 a1c6a512-1295-4272-9138-f99709370657

5 files changed, 195 insertions, 0 deletions

diff --git a/www/example/Makefile b/www/example/Makefile
new file mode 100644
index 0000000..7d8f2fd
--- /dev/null
+++ b/www/example/Makefile
@@ -0,0 +1,40 @@
+HPATH = /usr/local/sh-gcc/bin
+CC    = $(HPATH)/sh-elf-gcc 
+LD    = $(HPATH)/sh-elf-ld
+AR    = $(HPATH)/sh-elf-ar
+AS    = $(HPATH)/sh-elf-as
+OC    = $(HPATH)/sh-elf-objcopy
+
+INCLUDES=-I.
+
+CFLAGS = -Os -Wall -m1 -nostdlib -Wstrict-prototypes -fomit-frame-pointer -fschedule-insns $(INCLUDES)
+AFLAGS += -small -relax
+
+OBJS= start.o main.o
+
+%.o: %.s
+	$(CC) -o $@ $(CFLAGS) $(INCLUDES) $(DEFS) -c $<
+
+
+all : archos.mod # archos.asm 
+
+main.o: main.c
+
+archos.elf : $(OBJS) app.lds
+	$(CC) -nostdlib -o archos.elf $(OBJS) -lgcc -Tapp.lds -Wl,-Map,archos.map
+
+archos.bin : archos.elf
+	$(OC) -O binary archos.elf archos.bin
+
+archos.asm: archos.bin
+	sh2d -sh1 archos.bin > archos.asm
+
+archos.mod : archos.bin
+	scramble archos.bin archos.mod
+
+dist:
+	tar czvf dist.tar.gz Makefile main.c start.s app.lds
+
+clean:
+	-rm -f *.x *.i *.o *.elf *.bin *.map *.mod *.bak *~
+
diff --git a/www/example/README b/www/example/README
new file mode 100644
index 0000000..ca8ea36
--- /dev/null
+++ b/www/example/README
@@ -0,0 +1,7 @@
+Rockbox example build
+---------------------
+
+These files are meant to show how to build a simple program for the Archos.
+
+Note that the display code only works on older machines (<4.50) so don't
+look too hard on that. 
diff --git a/www/example/app.lds b/www/example/app.lds
new file mode 100644
index 0000000..03bd1b2
--- /dev/null
+++ b/www/example/app.lds
@@ -0,0 +1,23 @@
+ENTRY(_start)
+OUTPUT_FORMAT(elf32-sh)
+SECTIONS
+{
+    .vectors 0x09000000 :
+    {
+        *(.vectors);
+        . = ALIGN(0x200);
+        *(.text.start)
+        *(.text)
+        *(.rodata)
+    }
+
+    .bss :
+    {
+       _stack = . + 0x1000;
+    }
+
+    .pad 0x0900C800 :
+    {
+        LONG(0);
+    }
+  }
diff --git a/www/example/main.c b/www/example/main.c
new file mode 100644
index 0000000..9188aaf
--- /dev/null
+++ b/www/example/main.c
@@ -0,0 +1,102 @@
+#define PBDR   (*((volatile unsigned short *)0x05FFFFC2))
+
+#define DC  1
+#define CS1 2
+#define SDA 4
+#define SCK 8
+
+static const unsigned char ascii2lcd[] = {
+   0x00,0x01,0x02,0x03,0x00,0x84,0x85,0x89,
+   0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
+   0xec,0xe3,0xe2,0xe1,0xe0,0xdf,0x15,0x00,
+   0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
+   0x24,0x25,0x26,0x37,0x06,0x29,0x2a,0x2b,
+   0x2c,0x2d,0x2e,0x2f,0x30,0x31,0x32,0x33,
+   0x34,0x35,0x36,0x37,0x38,0x39,0x3a,0x3b,
+   0x3c,0x3d,0x3e,0x3f,0x40,0x41,0x42,0x43,
+   0x44,0x45,0x46,0x47,0x48,0x49,0x4a,0x4b,
+   0x4c,0x4d,0x4e,0x4f,0x50,0x51,0x52,0x53,
+   0x54,0x55,0x56,0x57,0x58,0x59,0x5a,0x5b,
+   0x5c,0x5d,0x5e,0xa9,0x33,0xce,0x00,0x15,
+   0x00,0x65,0x66,0x67,0x68,0x69,0x6a,0x6b,
+   0x6c,0x6d,0x6e,0x6f,0x70,0x71,0x72,0x73,
+   0x74,0x75,0x76,0x77,0x78,0x79,0x7a,0x7b,
+   0x7c,0x7d,0x7e,0x24,0x24,0x24,0x24,0x24,
+   0x24,0x24,0x24,0x24,0x24,0x24,0x24,0x24,
+   0x24,0x24,0x24,0x24,0x24,0x24,0x24,0x24,
+   0x24,0x24,0x24,0x24,0x24,0x24,0x24,0x24,
+   0x24,0x24,0x24,0x24,0x24,0x24,0x24,0x24,
+   0x24,0x24,0x24,0x24,0x24,0x24,0x24,0x24,
+   0x24,0x24,0x24,0x24,0x24,0x24,0x24,0x24,
+   0x24,0x24,0x24,0x24,0x24,0x24,0x24,0x24,
+   0x24,0x24,0x24,0x24,0x24,0x24,0x24,0x24,
+   0x45,0x45,0x45,0x45,0x45,0x45,0x24,0x47,
+   0x49,0x49,0x49,0x49,0x4d,0x4d,0x4d,0x4d,
+   0x48,0x52,0x53,0x53,0x53,0x53,0x53,0x24,
+   0x24,0x59,0x59,0x59,0x59,0x5d,0x24,0x24,
+   0x65,0x65,0x65,0x65,0x65,0x65,0x24,0x67,
+   0x69,0x69,0x69,0x69,0x6d,0x6d,0x6d,0x6d,
+   0x73,0x72,0x73,0x73,0x73,0x73,0x73,0x24,
+   0x24,0x79,0x79,0x79,0x79,0x7d,0x24,0x7d
+};
+
+void lcd_write(int byte, int data)
+{
+   int i;
+   char on,off;
+
+   PBDR &= ~CS1; /* enable lcd chip select */
+
+   if ( data ) {
+      on=~(SDA|SCK);
+      off=SCK|DC;
+   }
+   else {
+      on=~(SDA|SCK|DC);
+      off=SCK;
+   }
+   /* clock out each bit, MSB first */
+   for (i=0x80;i;i>>=1)
+   {
+      PBDR &= on;
+      if (i & byte)
+         PBDR |= SDA;
+      PBDR |= off;
+   }
+
+   PBDR |= CS1; /* disable lcd chip select */
+}
+
+void lcd_printxy( char x, char y, unsigned char* string, int len )
+{
+   int i;
+   lcd_write(0xb0+y*16+x,0);
+   for (i=0; string[i] && i<len; i++)
+      lcd_write(ascii2lcd[string[i]],1);
+}
+
+int main(void)
+{
+   lcd_printxy(0,0,"Open Source",11);
+
+   /* simple scroll */
+   while (1) {
+      int i,j;
+      char* string = "  Jukebox    Jukebox  ";
+      for ( i=0; i<11; i++ ) {
+	 lcd_printxy(0,1,string+i,11);
+	 for (j=0; j<600000; j++);
+	 PBDR ^= 0x40; /* toggle LED (PB6) */
+      }
+   }
+}
+
+extern const void stack(void);
+
+const void* vectors[] __attribute__ ((section (".vectors"))) = 
+{
+   main,	/* Power-on reset */
+   stack,	/* Power-on reset (stack pointer) */
+   main,	/* Manual reset */
+   stack	/* Manual reset (stack pointer) */
+};
diff --git a/www/example/start.s b/www/example/start.s
new file mode 100644
index 0000000..fd4669d
--- /dev/null
+++ b/www/example/start.s
@@ -0,0 +1,23 @@
+! note: sh-1 has a "delay cycle" after every branch where you can
+! execute another instruction "for free".
+	
+	.file	"start.s"
+	.section	.text.start
+	.extern	_main
+	.extern _vectors
+	.extern _stack
+	.global _start
+	.align  2
+
+_start:
+	mov.l	1f, r1
+	mov.l	3f, r3
+	mov.l	2f, r15
+	jmp	@r3
+	ldc	r1, vbr
+	nop
+
+1:	.long	_vectors
+2:	.long	_stack
+3:	.long	_main
+	.type		_start,@function