1 files changed, 184 insertions, 0 deletions

diff --git a/firmware/target/hosted/system-hosted.c b/firmware/target/hosted/system-hosted.c
new file mode 100644
index 0000000000..7f0949daf2
--- /dev/null
+++ b/firmware/target/hosted/system-hosted.c
@@ -0,0 +1,184 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ *
+ * Copyright (C) 2017 Marcin Bukat
+ * Copyright (C) 2016 Amaury Pouly
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+#include <unistd.h>
+#include <signal.h>
+#include <string.h>
+#include <ucontext.h>
+#include <backtrace.h>
+
+#include "system.h"
+#include "mv.h"
+#include "font.h"
+#include "power.h"
+#include "button.h"
+#include "backlight-target.h"
+#include "lcd.h"
+
+/* to make thread-internal.h happy */
+uintptr_t *stackbegin;
+uintptr_t *stackend;
+
+static void sig_handler(int sig, siginfo_t *siginfo, void *context)
+{
+    /* safe guard variable - we call backtrace() only on first
+     * UIE call. This prevent endless loop if backtrace() touches
+     * memory regions which cause abort
+     */
+    static bool triggered = false;
+
+    lcd_set_backdrop(NULL);
+    lcd_set_drawmode(DRMODE_SOLID);
+    lcd_set_foreground(LCD_BLACK);
+    lcd_set_background(LCD_WHITE);
+    unsigned line = 0;
+
+    lcd_setfont(FONT_SYSFIXED);
+    lcd_set_viewport(NULL);
+    lcd_clear_display();
+
+    /* get context info */
+    ucontext_t *uc = (ucontext_t *)context;
+    unsigned long pc = uc->uc_mcontext.pc;
+    unsigned long sp = uc->uc_mcontext.gregs[29];
+
+    lcd_putsf(0, line++, "%s at %08x", strsignal(sig), pc);
+
+    if(sig == SIGILL || sig == SIGFPE || sig == SIGSEGV || sig == SIGBUS || sig == SIGTRAP)
+        lcd_putsf(0, line++, "address 0x%08x", siginfo->si_addr);
+
+    if(!triggered)
+    {
+        triggered = true;
+        rb_backtrace(pc, sp, &line);
+    }
+
+#ifdef ROCKBOX_HAS_LOGF
+    lcd_putsf(0, line++, "logf:");
+    logf_panic_dump(&line);
+#endif
+
+    lcd_update();
+
+    system_exception_wait(); /* If this returns, try to reboot */
+    system_reboot();
+    while (1);       /* halt */
+}
+
+void power_off(void)
+{
+    system("/sbin/poweroff");
+}
+
+void system_init(void)
+{
+    int *s;
+    /* fake stack, to make thread-internal.h happy */
+    stackbegin = stackend = (uintptr_t*)&s;
+   /* catch some signals for easier debugging */
+    struct sigaction sa;
+    sigfillset(&sa.sa_mask);
+    sa.sa_flags = SA_SIGINFO;
+    sa.sa_sigaction = &sig_handler;
+    sigaction(SIGILL, &sa, NULL);
+    sigaction(SIGABRT, &sa, NULL);
+    sigaction(SIGFPE, &sa, NULL);
+    sigaction(SIGSEGV, &sa, NULL);
+    sigaction(SIGPIPE, &sa, NULL);
+    sigaction(SIGTERM, &sa, NULL);
+    sigaction(SIGBUS, &sa, NULL);
+    sigaction(SIGTERM, &sa, NULL);
+}
+
+void system_reboot(void)
+{
+    system("/sbin/reboot");
+}
+
+void system_exception_wait(void)
+{
+    backlight_hw_on();
+    backlight_hw_brightness(DEFAULT_BRIGHTNESS_SETTING);
+    /* wait until button press and release */
+    while(button_read_device() != 0) {}
+    while(button_read_device() == 0) {}
+    while(button_read_device() != 0) {}
+    while(button_read_device() == 0) {}
+}
+
+bool hostfs_removable(IF_MD_NONVOID(int drive))
+{
+#ifdef HAVE_MULTIDRIVE
+    if (drive > 0) /* Active LOW */
+        return true;
+    else
+#endif
+        return false; /* internal: always present */
+}
+
+bool hostfs_present(IF_MD_NONVOID(int drive))
+{
+#ifdef HAVE_MULTIDRIVE
+    if (drive > 0) /* Active LOW */
+        return true; //FIXME
+    else
+#endif
+        return true; /* internal: always present */
+}
+
+#ifdef HAVE_MULTIDRIVE
+int volume_drive(int drive)
+{
+    return drive;
+}
+#endif /* HAVE_MULTIDRIVE */
+
+#ifdef CONFIG_STORAGE_MULTI
+int hostfs_driver_type(int drive)
+{
+    return drive > 0 ? STORAGE_SD_NUM : STORAGE_HOSTFS_NUM;
+}
+#endif /* CONFIG_STORAGE_MULTI */
+
+int hostfs_init(void)
+{
+    return 0;
+}
+
+int hostfs_flush(void)
+{
+    sync();
+    return 0;
+}
+
+#ifdef HAVE_HOTSWAP
+bool volume_removable(int volume)
+{
+    /* don't support more than one partition yet, so volume == drive */
+    return hostfs_removable(volume);
+}
+
+bool volume_present(int volume)
+{
+    /* don't support more than one partition yet, so volume == drive */
+    return hostfs_present(volume);
+}
+#endif
+