New Port: Eros Q Native

What works:
- LCD: 16-bit RGB565
- all buttons, including scrollwheel
- SD Card
- Battery level and charging/not charging status
- USB
- audio
- sample rate switching
- HP / LO detect, with "safe" fixed LO volume -
   LO volume will only be put to user-defined max volume
   if headphones are not present.
- rtc
- Plugins build, tried a couple and they seem OK
- Bootloader, installable to nand via usbboot

What doesn't work:
- Dual Boot
- power on/off has intermittent, low volume audio click
   (sometimes it's completely silent, sometimes there's
    a click)
- Audio uses 16-bit volume scaling, so clicking/popping
   is pretty bad at lower volumes - need 32 bit volume
   scaling, 24 bit I2S data
- USB HID keys not yet defined
- no jztool support

Unknowns:
- Stereo Switch pins: Direction select, AC_DC
   (probably not even hooked up)
- What is the actual purpose of the Stereo Swtich?
- How does the bluetooth module connect?

"Someday" stuff:
- get LCD working at higher bit depth
- Bluetooth

Change-Id: I70dda8fc092c6e3f4352f2245e4164193f803c33

1 files changed, 63 insertions, 0 deletions

diff --git a/firmware/target/mips/ingenic_x1000/erosqnative/spl-erosqnative.c b/firmware/target/mips/ingenic_x1000/erosqnative/spl-erosqnative.c
new file mode 100644
index 0000000000..9d7a1d118a
--- /dev/null
+++ b/firmware/target/mips/ingenic_x1000/erosqnative/spl-erosqnative.c
@@ -0,0 +1,63 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) 2021 Aidan MacDonald
+ *
+ * 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 "system.h"
+#include "clk-x1000.h"
+#include "spl-x1000.h"
+#include "gpio-x1000.h"
+
+/* TODO: get dual-boot working */
+
+const struct spl_boot_option spl_boot_options[] = {
+    [BOOT_OPTION_ROCKBOX] = {
+        .storage_addr = 0x6800,
+        .storage_size = 102 * 1024,
+        .load_addr = X1000_DRAM_BASE,
+        .exec_addr = X1000_DRAM_BASE,
+        .flags = BOOTFLAG_UCLPACK,
+    },
+};
+
+int spl_get_boot_option(void)
+{
+    return BOOT_OPTION_ROCKBOX;
+}
+
+void spl_error(void)
+{
+    const uint32_t pin = (1 << 25);
+
+    /* Turn on backlight */
+    jz_clr(GPIO_INT(GPIO_C), pin);
+    jz_set(GPIO_MSK(GPIO_C), pin);
+    jz_clr(GPIO_PAT1(GPIO_C), pin);
+    jz_set(GPIO_PAT0(GPIO_C), pin);
+
+    while(1) {
+        /* Turn it off */
+        mdelay(100);
+        jz_set(GPIO_PAT0(GPIO_C), pin);
+
+        /* Turn it on */
+        mdelay(100);
+        jz_clr(GPIO_PAT0(GPIO_C), pin);
+    }
+}