From 94f7d0f29095e056de281b2159a85e0f4c73d61a Mon Sep 17 00:00:00 2001
From: Michael Sevakis <jethead71@rockbox.org>
Date: Fri, 18 Apr 2008 16:42:50 +0000
Subject: UMS for the Gigabeat S. Bootloader USB mode. Has a couple quirks 1)
 First plug has problems if cold. Replug if it doesn't connect or not at high
 speed 2) Linux doesn't like the odd bootable flag value used in the
 partitions so it won't mount but Windows works. Fix minor OTG driver bugs and
 clean up device memory handling. Generic name for ARC controller driver.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@17154 a1c6a512-1295-4272-9138-f99709370657
---
 bootloader/gigabeat-s.c | 58 +++++++++++++++++++++++++++++++++++++++++++++++--
 1 file changed, 56 insertions(+), 2 deletions(-)

(limited to 'bootloader/gigabeat-s.c')

diff --git a/bootloader/gigabeat-s.c b/bootloader/gigabeat-s.c
index 3ca41d989c..dbacaaa901 100644
--- a/bootloader/gigabeat-s.c
+++ b/bootloader/gigabeat-s.c
@@ -46,6 +46,7 @@
 #include "lcd-target.h"
 #include "avic-imx31.h"
 #include <stdarg.h>
+#include "usb-target.h"
 
 #define TAR_CHUNK 512
 #define TAR_HEADER_SIZE 157
@@ -55,6 +56,7 @@ char basedir[] = "/Content/0b00/00/"; /* Where files sent via MTP are stored */
 int (*kernel_entry)(void);
 char *tarbuf = (char *)0x00000040;
 extern void reference_system_c(void);
+static struct event_queue usb_wait_queue;
 
 /* Dummy stub that creates C references for C functions only used by
    assembly - never called */
@@ -63,6 +65,15 @@ void reference_files(void)
     reference_system_c();
 }
 
+void show_splash(int timeout, const char *msg)
+{
+    lcd_putsxy( (LCD_WIDTH - (SYSFONT_WIDTH * strlen(msg))) / 2,
+                (LCD_HEIGHT - SYSFONT_HEIGHT) / 2, msg);
+    lcd_update();
+
+    sleep(timeout);
+}
+
 void untar(int tar_fd)
 {
     char header[TAR_HEADER_SIZE];
@@ -145,7 +156,7 @@ void main(void)
 
     lcd_clear_display();
     printf("Hello world!");
-    printf("Gigabeat S Rockbox Bootloader v.00000006");
+    printf("Gigabeat S Rockbox Bootloader v.00000007");
     system_init();
     kernel_init();
     printf("kernel init done");
@@ -223,6 +234,47 @@ void main(void)
         }
     }
 
+    if (usb_plugged())
+    {
+        /* Enter USB mode  */
+        struct queue_event ev;
+        queue_init(&usb_wait_queue, true);
+
+        /* Start the USB driver */
+        usb_init();
+        usb_start_monitoring();
+
+        /* Wait for threads to connect or cable is pulled */
+        reset_screen();
+        show_splash(0, "Waiting for USB");
+
+        while (1)
+        {
+            queue_wait_w_tmo(&usb_wait_queue, &ev, HZ/2);
+
+            if (ev.id == SYS_USB_CONNECTED)
+                break; /* Hit */
+
+            if (!usb_plugged())
+                break; /* Cable pulled */
+        }
+
+        if (ev.id == SYS_USB_CONNECTED)
+        {
+            /* Got the message - wait for disconnect */
+            reset_screen();
+            show_splash(0, "Bootloader USB mode");
+
+            usb_acknowledge(SYS_USB_CONNECTED_ACK);
+            usb_wait_for_disconnect(&usb_wait_queue);
+        }
+
+        /* No more monitoring */
+        usb_stop_monitoring();
+
+        reset_screen();
+    }
+
     unsigned char *loadbuffer = (unsigned char *)0x0;
     int buffer_size = 31*1024*1024;
 
@@ -239,6 +291,8 @@ void main(void)
         rc = kernel_entry();
     }
 
-    while (1);
+    /* Halt */
+    while (1)
+        core_idle();
 }
 
-- 
cgit