initial gigabeat bootloader (only test code)

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@10536 a1c6a512-1295-4272-9138-f99709370657

bootloader/SOURCES

@@ -1,5 +1,7 @@
 #if defined(IPOD_ARCH)
 ipod.c
+#elif defined(GIGABEAT_F)
+gigabeat.c
 #elif defined(SANSA_E200)
 e200.c
 #elif defined(IRIVER_H10)

bootloader/gigabeat.c

@@ -0,0 +1,115 @@
+#include "config.h"
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include "cpu.h"
+#include "system.h"
+#include "lcd.h"
+#include "kernel.h"
+#include "thread.h"
+#include "ata.h"
+#include "fat.h"
+#include "disk.h"
+#include "font.h"
+#include "adc.h"
+#include "backlight.h"
+#include "panic.h"
+#include "power.h"
+#include "file.h"
+
+char version[] = APPSVERSION;
+
+void go_usb_mode() {
+  /* Drop into USB mode.  This does not check for disconnection. */
+
+    int i;
+
+    GPBDAT &= 0x7EF;
+    GPBCON |= 1<<8;
+
+    GPGDAT &= 0xE7FF;
+    GPGDAT |= 1<<11;
+
+    for (i = 0; i < 10000000; i++) {continue;}
+
+    GPBCON &= 0x2FFCFF;
+    GPBDAT |= 1<<5; 
+    GPBDAT |= 1<<6;
+}
+
+void * main(void)
+{
+    int line = 0, i;
+    char buf[256];
+    struct partinfo* pinfo;
+    unsigned short* identify_info;
+    int testfile;
+
+    lcd_init();
+    lcd_setfont(FONT_SYSFIXED);
+/*
+    lcd_puts(0, line++, "Rockbox boot loader");
+    snprintf(buf, sizeof(buf), "Version: 20%s", version);
+    lcd_puts(0, line++, buf);
+    snprintf(buf, sizeof(buf), "Gigabeat version: 0x%08x", 1);
+    lcd_puts(0, line++, buf);
+*/
+
+    lcd_puts(0, line++, "Hold MENU when booting for rescue mode.");
+    lcd_update();
+
+    /* hold MENU to enter rescue mode */
+    if (GPGDAT & 2)  {
+        lcd_puts(0, line++, "Entering rescue mode..");
+        lcd_update();
+        go_usb_mode();
+        while(1);
+    }
+
+    i = ata_init();
+    i = disk_mount_all();
+
+    snprintf(buf, sizeof(buf), "disk_mount_all: %d", i);
+    lcd_puts(0, line++, buf);
+
+    identify_info = ata_get_identify();
+
+    for (i=0; i < 20; i++)
+        ((unsigned short*)buf)[i]=htobe16(identify_info[i+27]);
+
+    buf[40]=0;
+
+    /* kill trailing space */
+    for (i=39; i && buf[i]==' '; i--)
+        buf[i] = 0;
+
+    lcd_puts(0, line++, "Model");
+    lcd_puts(0, line++, buf);
+
+    for (i=0; i < 4; i++)
+        ((unsigned short*)buf)[i]=htobe16(identify_info[i+23]);
+
+    buf[8]=0;
+
+    lcd_puts(0, line++, "Firmware");
+    lcd_puts(0, line++, buf);
+
+    pinfo = disk_partinfo(0);
+    snprintf(buf, sizeof(buf), "Partition 0: 0x%02x %ld MB", 
+                  pinfo->type, pinfo->size / 2048);
+    lcd_puts(0, line++, buf);
+
+    testfile = open("/boottest.txt", O_WRONLY|O_CREAT|O_TRUNC);
+    write(testfile, "It works!", 9);
+    close(testfile);
+
+    lcd_update();
+
+    /* now wait in USB mode so the bootloader can be updated */
+    go_usb_mode();
+    while(1);
+
+  return((void *)0);
+}
+

firmware/boot.lds

@@ -69,7 +69,7 @@ INPUT(crt0.o)
 #define FLASHSIZE 256K - ROM_START
 #endif
 
-#ifndef CPU_PP
+#if !defined(CPU_PP) && (CONFIG_CPU!=S3C2440)
 MEMORY
 {
    DRAM : ORIGIN = DRAMORIG, LENGTH = DRAMSIZE
@@ -117,6 +117,36 @@ SECTIONS
      _end = .;
    }
 }
+#elif (CONFIG_CPU==S3C2440)
+{
+  . = DRAMORIG + 0x8000;
+  .text : {
+    *(.init.text)
+    *(.text)
+  }
+  .data : {
+    *(.icode)
+    *(.irodata)
+    *(.idata)
+    *(.data)
+    _dataend = . ;
+   }
+  .stack :
+  {
+     *(.stack)
+     _stackbegin = .;
+     stackbegin = .;
+     . += 0x2000;
+     _stackend = .;
+     stackend = .;
+  }
+  .bss : {
+     _edata = .;
+     *(.bss);
+     *(.ibss);
+     _end = .;
+   }
+}
 #else
 {
     .vectors :

firmware/crt0.S

@@ -303,6 +303,11 @@ boot_table:
     .space 400
 #endif /* PP specific */
 /* Code for ARM bootloader targets other than iPod go here */
+
+#if CONFIG_CPU == S3C2440
+    bl main
+#endif
+
 #else /* BOOTLOADER */
     
     /* Set up stack for IRQ mode */ 

firmware/kernel.c

@@ -56,6 +56,21 @@ void kernel_init(void)
 
 void sleep(int ticks)
 {
+#if CONFIG_CPU == S3C2440 && defined(BOOTLOADER)
+    int counter;
+    TCON &= ~(1 << 20); // stop timer 4
+    // TODO: this constant depends on dividers settings inherited from
+    // firmware. Set them explicitly somwhere.
+    TCNTB4 = 12193 * ticks / HZ;
+    TCON |= 1 << 21; // set manual bit
+    TCON &= ~(1 << 21); // reset manual bit
+    TCON &= ~(1 << 22); //autoreload Off
+    TCON |= (1 << 20); // start timer 4
+    do {
+       counter = TCNTO4;
+    } while(counter > 0);
+
+#else
     /* Always sleep at least 1 tick */
     int timeout = current_tick + ticks + 1;
 
@@ -63,12 +78,16 @@ void sleep(int ticks)
         sleep_thread();
     }
     wake_up_thread();
+#endif
 }
 
 void yield(void)
 {
+#if CONFIG_CPU == S3C2440 && defined(BOOTLOADER)
+#else
     switch_thread();
     wake_up_thread();
+#endif
 }
 
 /****************************************************************************

tools/configure

@@ -997,7 +997,7 @@ fi
   case $option in
     [Bb])
       case $archos in
-          h100|h120|h300|x5|ipodcolor|ipodnano|ipodvideo|ipod3g|ipod4g|ipodmini|ipodmini2g|h10|e200)
+          h100|h120|h300|x5|ipodcolor|ipodnano|ipodvideo|ipod3g|ipod4g|ipodmini|ipodmini2g|gigabeatf|h10|e200)
               extradefines="-DBOOTLOADER" # for target makefile symbol EXTRA_DEFINES
               appsdir='\$(ROOTDIR)/bootloader'
               apps="bootloader"