New port: Shanling Q1 native

- Audio playback works
- Touchscreen and buttons work
- Bootloader works and is capable of dual boot
- Plugins are working
- Cabbiev2 theme has been ported
- Stable for general usage

Thanks to Marc Aarts for porting Cabbiev2 and plugin bitmaps.

There's a few minor known issues:

- Bootloader must be installed manually using 'usbboot' as there is
  no support in jztool yet.

- Keymaps may be lacking, need further testing and feedback.

- Some plugins may not be fully adapted to the screen size and could
  benefit from further tweaking.

- LCD shows abnormal effects under some circumstances: for example,
  after viewing a mostly black screen an afterimage appears briefly
  when going back to a brightly-lit screen. Sudden power-off without
  proper shutdown of the backlight causes a "dissolving" effect.

- CW2015 battery reporting driver is buggy, and disabled for now.
  Battery reporting is currently voltage-based using the AXP192.

Change-Id: I635e83f02a880192c5a82cb0861ad3a61c137c3a

1 files changed, 116 insertions, 0 deletions

diff --git a/firmware/target/mips/ingenic_x1000/shanlingq1/spl-shanlingq1.c b/firmware/target/mips/ingenic_x1000/shanlingq1/spl-shanlingq1.c
new file mode 100644
index 0000000000..33303c5e6b
--- /dev/null
+++ b/firmware/target/mips/ingenic_x1000/shanlingq1/spl-shanlingq1.c
@@ -0,0 +1,116 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   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"
+
+#define CMDLINE_COMMON \
+    "mem=64M@0x0 no_console_suspend console=ttyS2,115200n8 lpj=5009408 ip=off"
+#define CMDLINE_NORMAL \
+    " init=/linuxrc ubi.mtd=5 root=ubi0:rootfs ubi.mtd=6 rootfstype=ubifs rw"
+
+static int dualboot_setup(void)
+{
+    spl_dualboot_init_clocktree();
+    spl_dualboot_init_uart2();
+
+    /* load PDMA MCU firmware */
+    jz_writef(CPM_CLKGR, PDMA(0));
+    return spl_storage_read(0x4000, 0x2000, (void*)0xb3422000);
+}
+
+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,
+    },
+    [BOOT_OPTION_OFW_PLAYER] = {
+        .storage_addr = 0x140000,
+        .storage_size = 8 * 1024 * 1024,
+        .load_addr = 0x80efffc0,
+        .exec_addr = 0x80f00000,
+        .cmdline = CMDLINE_COMMON CMDLINE_NORMAL,
+        .cmdline_addr = 0x80004000,
+        .setup = dualboot_setup,
+    },
+    [BOOT_OPTION_OFW_RECOVERY] = {
+        .storage_addr = 0x940000,
+        .storage_size = 10 * 1024 * 1024,
+        .load_addr = 0x80efffc0,
+        .exec_addr = 0x80f00000,
+        .cmdline = CMDLINE_COMMON,
+        .cmdline_addr = 0x80004000,
+        .setup = dualboot_setup,
+    },
+};
+
+int spl_get_boot_option(void)
+{
+    /* Button debounce time in OST clock cycles */
+    const uint32_t btn_stable_time = 100 * (X1000_EXCLK_FREQ / 4000);
+
+    /* Buttons to poll */
+    const unsigned port = GPIO_B;
+    const uint32_t recov_pin = (1 << 22);   /* Next */
+    const uint32_t orig_fw_pin = (1 << 21); /* Prev */
+
+    uint32_t pin = -1, lastpin = 0;
+    uint32_t deadline = 0;
+    int iter_count = 30; /* to avoid an infinite loop */
+
+    /* set GPIOs to input state */
+    gpioz_configure(port, recov_pin|orig_fw_pin, GPIOF_INPUT);
+
+    /* Poll until we get a stable reading */
+    do {
+        lastpin = pin;
+        pin = ~REG_GPIO_PIN(port) & (recov_pin|orig_fw_pin);
+        if(pin != lastpin) {
+            deadline = __ost_read32() + btn_stable_time;
+            iter_count -= 1;
+        }
+    } while(iter_count > 0 && __ost_read32() < deadline);
+
+    if(iter_count >= 0 && (pin & orig_fw_pin)) {
+        if(pin & recov_pin)
+            return BOOT_OPTION_OFW_RECOVERY;
+        else
+            return BOOT_OPTION_OFW_PLAYER;
+    }
+
+    return BOOT_OPTION_ROCKBOX;
+}
+
+void spl_error(void)
+{
+    /* Flash the backlight */
+    int level = 0;
+    while(1) {
+        gpio_set_function(GPIO_PC(25), GPIOF_OUTPUT(level));
+        mdelay(100);
+        level = 1 - level;
+    }
+}