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authorDaniel Stenberg <daniel@haxx.se>2006-08-01 22:28:14 +0000
committerDaniel Stenberg <daniel@haxx.se>2006-08-01 22:28:14 +0000
commit0fc30d117412f2cbd8e00a043e0c901345125d31 (patch)
tree1cba88b9ed482cef7ca2bba3a2fc059a40221d43 /bootloader/e200.c
parent97cf946e4df08852b7ce17ecb7fe8425df67dc3f (diff)
downloadrockbox-0fc30d117412f2cbd8e00a043e0c901345125d31.tar.gz
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added mostly dummy changes to allow building of a Sansa e200 bootloader
without functionality git-svn-id: svn://svn.rockbox.org/rockbox/trunk@10399 a1c6a512-1295-4272-9138-f99709370657
Diffstat (limited to 'bootloader/e200.c')
-rw-r--r--bootloader/e200.c353
1 files changed, 353 insertions, 0 deletions
diff --git a/bootloader/e200.c b/bootloader/e200.c
new file mode 100644
index 0000000000..2cf78942a2
--- /dev/null
+++ b/bootloader/e200.c
@@ -0,0 +1,353 @@
+/***************************************************************************
+ * __________ __ ___.
+ * Open \______ \ ____ ____ | | _\_ |__ _______ ___
+ * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
+ * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
+ * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
+ * \/ \/ \/ \/ \/
+ * $Id$
+ *
+ * Copyright (C) 2005 by Dave Chapman
+ *
+ * Based on ipod.c by Dave Chapman
+ * Based on Rockbox iriver bootloader by Linus Nielsen Feltzing
+ * and the ipodlinux bootloader by Daniel Palffy and Bernard Leach
+ *
+ * All files in this archive are subject to the GNU General Public License.
+ * See the file COPYING in the source tree root for full license agreement.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+#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"
+
+#define XSC(X) #X
+#define SC(X) XSC(X)
+
+#define DRAM_START 0x10000000
+
+#define BUTTON_LEFT 1
+#define BUTTON_MENU 2
+#define BUTTON_RIGHT 3
+#define BUTTON_PLAY 4
+#define BUTTON_HOLD 5
+
+/* Size of the buffer to store the loaded Rockbox/Linux image */
+#define MAX_LOADSIZE (4*1024*1024)
+
+char version[] = APPSVERSION;
+
+typedef struct _image {
+ unsigned type; /* '' */
+ unsigned id; /* */
+ unsigned pad1; /* 0000 0000 */
+ unsigned devOffset; /* byte offset of start of image code */
+ unsigned len; /* length in bytes of image */
+ void *addr; /* load address */
+ unsigned entryOffset; /* execution start within image */
+ unsigned chksum; /* checksum for image */
+ unsigned vers; /* image version */
+ unsigned loadAddr; /* load address for image */
+} image_t;
+
+extern image_t boot_table[];
+
+int line=0;
+
+static void memmove16(void *dest, const void *src, unsigned count)
+{
+ struct bufstr {
+ unsigned _buf[4];
+ } *d, *s;
+
+ if (src >= dest) {
+ count = (count + 15) >> 4;
+ d = (struct bufstr *) dest;
+ s = (struct bufstr *) src;
+ while (count--)
+ *d++ = *s++;
+ } else {
+ count = (count + 15) >> 4;
+ d = (struct bufstr *)(dest + (count <<4));
+ s = (struct bufstr *)(src + (count <<4));
+ while (count--)
+ *--d = *--s;
+ }
+}
+
+#if CONFIG_KEYPAD == IPOD_4G_PAD && !defined(IPOD_MINI)
+/* check if number of seconds has past */
+int timer_check(int clock_start, unsigned int usecs)
+{
+ if ((USEC_TIMER - clock_start) >= usecs) {
+ return 1;
+ } else {
+ return 0;
+ }
+}
+
+static void ser_opto_keypad_cfg(int val)
+{
+ int start_time;
+
+ outl(inl(0x6000d004) & ~0x80, 0x6000d004);
+
+ outl(inl(0x7000c104) | 0xc000000, 0x7000c104);
+ outl(val, 0x7000c120);
+ outl(inl(0x7000c100) | 0x80000000, 0x7000c100);
+
+ outl(inl(0x6000d024) & ~0x10, 0x6000d024);
+ outl(inl(0x6000d014) | 0x10, 0x6000d014);
+
+ start_time = USEC_TIMER;
+ do {
+ if ((inl(0x7000c104) & 0x80000000) == 0) {
+ break;
+ }
+ } while (timer_check(start_time, 1500) != 0);
+
+ outl(inl(0x7000c100) & ~0x80000000, 0x7000c100);
+
+ outl(inl(0x6000d004) | 0x80, 0x6000d004);
+ outl(inl(0x6000d024) | 0x10, 0x6000d024);
+ outl(inl(0x6000d014) & ~0x10, 0x6000d014);
+
+ outl(inl(0x7000c104) | 0xc000000, 0x7000c104);
+ outl(inl(0x7000c100) | 0x60000000, 0x7000c100);
+}
+
+int opto_keypad_read(void)
+{
+ int loop_cnt, had_io = 0;
+
+ for (loop_cnt = 5; loop_cnt != 0;)
+ {
+ int key_pressed = 0;
+ int start_time;
+ unsigned int key_pad_val;
+
+ ser_opto_keypad_cfg(0x8000023a);
+
+ start_time = USEC_TIMER;
+ do {
+ if (inl(0x7000c104) & 0x4000000) {
+ had_io = 1;
+ break;
+ }
+
+ if (had_io != 0) {
+ break;
+ }
+ } while (timer_check(start_time, 1500) != 0);
+
+ key_pad_val = inl(0x7000c140);
+ if ((key_pad_val & ~0x7fff0000) != 0x8000023a) {
+ loop_cnt--;
+ } else {
+ key_pad_val = (key_pad_val << 11) >> 27;
+ key_pressed = 1;
+ }
+
+ outl(inl(0x7000c100) | 0x60000000, 0x7000c100);
+ outl(inl(0x7000c104) | 0xc000000, 0x7000c104);
+
+ if (key_pressed != 0) {
+ return key_pad_val ^ 0x1f;
+ }
+ }
+
+ return 0;
+}
+#endif
+
+static int key_pressed(void)
+{
+ unsigned char state;
+
+#if CONFIG_KEYPAD == IPOD_4G_PAD
+#ifdef IPOD_MINI /* mini 1G only */
+ state = GPIOA_INPUT_VAL & 0x3f;
+ if ((state & 0x10) == 0) return BUTTON_LEFT;
+ if ((state & 0x2) == 0) return BUTTON_MENU;
+ if ((state & 0x4) == 0) return BUTTON_PLAY;
+ if ((state & 0x8) == 0) return BUTTON_RIGHT;
+#else
+ state = opto_keypad_read();
+ if ((state & 0x4) == 0) return BUTTON_LEFT;
+ if ((state & 0x10) == 0) return BUTTON_MENU;
+ if ((state & 0x8) == 0) return BUTTON_PLAY;
+ if ((state & 0x2) == 0) return BUTTON_RIGHT;
+#endif
+#elif CONFIG_KEYPAD == IPOD_3G_PAD
+ state = inb(0xcf000030);
+ if (((state & 0x20) == 0)) return BUTTON_HOLD; /* hold on */
+ if ((state & 0x08) == 0) return BUTTON_LEFT;
+ if ((state & 0x10) == 0) return BUTTON_MENU;
+ if ((state & 0x04) == 0) return BUTTON_PLAY;
+ if ((state & 0x01) == 0) return BUTTON_RIGHT;
+#endif
+ return 0;
+}
+
+int load_rockbox(unsigned char* buf)
+{
+ int fd;
+ int rc;
+ int len;
+ unsigned long chksum;
+ char model[5];
+ unsigned long sum;
+ int i;
+ char str[80];
+
+ fd = open("/.rockbox/" BOOTFILE, O_RDONLY);
+ if(fd < 0)
+ {
+ fd = open("/" BOOTFILE, O_RDONLY);
+ if(fd < 0)
+ return -1;
+ }
+
+ len = filesize(fd) - 8;
+
+ if (len > MAX_LOADSIZE)
+ return -6;
+
+ lseek(fd, FIRMWARE_OFFSET_FILE_CRC, SEEK_SET);
+
+ rc = read(fd, &chksum, 4);
+ chksum=betoh32(chksum); /* Rockbox checksums are big-endian */
+ if(rc < 4)
+ return -2;
+
+ rc = read(fd, model, 4);
+ if(rc < 4)
+ return -3;
+
+ model[4] = 0;
+
+ snprintf(str, 80, "Model: %s", model);
+ lcd_puts(0, line++, str);
+ snprintf(str, 80, "Checksum: %x", chksum);
+ lcd_puts(0, line++, str);
+ lcd_update();
+
+ lseek(fd, FIRMWARE_OFFSET_FILE_DATA, SEEK_SET);
+
+ rc = read(fd, buf, len);
+ if(rc < len)
+ return -4;
+
+ close(fd);
+
+ sum = MODEL_NUMBER;
+
+ for(i = 0;i < len;i++) {
+ sum += buf[i];
+ }
+
+ snprintf(str, 80, "Sum: %x", sum);
+ lcd_puts(0, line++, str);
+ lcd_update();
+
+ if(sum != chksum)
+ return -5;
+
+ return len;
+}
+
+
+/* A buffer to load the Linux kernel or Rockbox into */
+unsigned char loadbuffer[MAX_LOADSIZE];
+
+void* main(void)
+{
+ char buf[256];
+ int imageno=0;
+ int i;
+ int rc;
+ int padding = 0x4400;
+ image_t *tblp = boot_table;
+ void* entry;
+ struct partinfo* pinfo;
+ unsigned short* identify_info;
+
+ /* Turn on the backlight */
+
+#if CONFIG_BACKLIGHT==BL_IPOD4G
+ /* brightness full */
+ outl(0x80000000 | (0xff << 16), 0x7000a010);
+
+ /* set port B03 on */
+ outl(((0x100 | 1) << 3), 0x6000d824);
+
+#elif CONFIG_BACKLIGHT==BL_IPODMINI
+ /* set port B03 on */
+ outl(((0x100 | 1) << 3), 0x6000d824);
+
+#elif CONFIG_BACKLIGHT==BL_IPODNANO
+
+ /* set port B03 on */
+ outl(((0x100 | 1) << 3), 0x6000d824);
+
+ /* set port L07 on */
+ outl(((0x100 | 1) << 7), 0x6000d12c);
+#elif CONFIG_BACKLIGHT==BL_IPOD3G
+ outl(inl(IPOD_LCD_BASE) | 0x2, IPOD_LCD_BASE);
+#endif
+
+ /* Return the start address in loaded image */
+ return entry;
+}
+
+/* These functions are present in the firmware library, but we reimplement
+ them here because the originals do a lot more than we want */
+
+void reset_poweroff_timer(void)
+{
+}
+
+int dbg_ports(void)
+{
+ return 0;
+}
+
+void mpeg_stop(void)
+{
+}
+
+void usb_acknowledge(void)
+{
+}
+
+void usb_wait_for_disconnect(void)
+{
+}
+
+void sys_poweroff(void)
+{
+}
+
+void system_reboot(void)
+{
+
+}