From 3ec66893e377b088c1284d2d23adb2aeea6d7965 Mon Sep 17 00:00:00 2001
From: Aidan MacDonald <amachronic@protonmail.com>
Date: Sat, 27 Feb 2021 22:08:58 +0000
Subject: New port: FiiO M3K on bare metal

Change-Id: I7517e7d5459e129dcfc9465c6fbd708619888fbe
---
 .../mips/ingenic_x1000/fiiom3k/nand-fiiom3k.c      | 53 ++++++++++++++++++++++
 1 file changed, 53 insertions(+)
 create mode 100644 firmware/target/mips/ingenic_x1000/fiiom3k/nand-fiiom3k.c

(limited to 'firmware/target/mips/ingenic_x1000/fiiom3k/nand-fiiom3k.c')

diff --git a/firmware/target/mips/ingenic_x1000/fiiom3k/nand-fiiom3k.c b/firmware/target/mips/ingenic_x1000/fiiom3k/nand-fiiom3k.c
new file mode 100644
index 0000000000..7c8a306bae
--- /dev/null
+++ b/firmware/target/mips/ingenic_x1000/fiiom3k/nand-fiiom3k.c
@@ -0,0 +1,53 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   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 "nand-x1000.h"
+#include "nand-target.h"
+#include "sfc-x1000.h"
+
+/* Unbelievably FiiO has completely disabled the use of ECC for this chip
+ * in their Linux kernel, even though it has perfectly good spare areas.
+ * There's no internal ECC either.
+ *
+ * Using nanddump to read the spare areas reveals they're filled with 0xff,
+ * and the publicly released Linux source has the ecc_strength set to 0.
+ */
+static const nand_chip_data ato25d1ga = {
+    .name = "ATO25D1GA",
+    .mf_id = 0x9b,
+    .dev_id = 0x12,
+    .dev_conf = NAND_INIT_SFC_DEV_CONF,
+    /* XXX: datasheet says 104 MHz but FiiO seems to run this at 150 MHz.
+     * Didn't find any issues doing this so might as well keep the behavior.
+     */
+    .clock_freq = NAND_INIT_CLOCK_SPEED,
+    .block_size = 64,
+    .page_size = 2048,
+    .spare_size = 64,
+    .rowaddr_width = 3,
+    .coladdr_width = 2,
+    .flags = NANDCHIP_FLAG_QUAD,
+};
+
+const nand_chip_desc target_nand_chip_descs[] = {
+    {&ato25d1ga, &nand_chip_ops_std},
+    {NULL, NULL},
+};
-- 
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