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authorSascha Hauer <s.hauer@pengutronix.de>2017-02-13 09:26:04 +0100
committerSascha Hauer <s.hauer@pengutronix.de>2017-02-13 09:26:04 +0100
commit30139163b75970fcd58df6b6b987883e36571046 (patch)
tree00bd354cefa617f8474cc73994b1a72c11e770a0 /arch/arm/boards/zii-imx6q-rdu2/lowlevel.c
parentbb1a6a2fd3cc41be6db1a1362f311456019317b1 (diff)
parent19df384cec181be4407f82377ffbb3059b1ed748 (diff)
downloadbarebox-30139163b75970fcd58df6b6b987883e36571046.tar.gz
Merge branch 'for-next/imx'
Diffstat (limited to 'arch/arm/boards/zii-imx6q-rdu2/lowlevel.c')
-rw-r--r--arch/arm/boards/zii-imx6q-rdu2/lowlevel.c66
1 files changed, 66 insertions, 0 deletions
diff --git a/arch/arm/boards/zii-imx6q-rdu2/lowlevel.c b/arch/arm/boards/zii-imx6q-rdu2/lowlevel.c
new file mode 100644
index 0000000..0d3520d
--- /dev/null
+++ b/arch/arm/boards/zii-imx6q-rdu2/lowlevel.c
@@ -0,0 +1,66 @@
+/*
+ * Copyright (C) 2016 Zodiac Inflight Innovation
+ * Author: Andrey Smirnov <andrew.smirnov@gmail.com>
+ *
+ * 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 program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <debug_ll.h>
+#include <common.h>
+#include <mach/esdctl.h>
+#include <mach/generic.h>
+#include <mach/imx6.h>
+#include <asm/barebox-arm.h>
+
+static inline void setup_uart(void)
+{
+ void __iomem *iomuxbase = IOMEM(MX6_IOMUXC_BASE_ADDR);
+
+ imx6_ungate_all_peripherals();
+
+ writel(0x1b0b1, iomuxbase + 0x0650);
+ writel(3, iomuxbase + 0x0280);
+
+ writel(0x1b0b1, iomuxbase + 0x0654);
+ writel(3, iomuxbase + 0x0284);
+ writel(1, iomuxbase + 0x0920);
+
+ imx6_uart_setup_ll();
+
+ putc_ll('>');
+}
+
+extern char __dtb_imx6q_zii_rdu2_start[];
+extern char __dtb_imx6qp_zii_rdu2_start[];
+
+ENTRY_FUNCTION(start_imx6q_zii_rdu2, r0, r1, r2)
+{
+ void *fdt = __dtb_imx6q_zii_rdu2_start;
+
+ imx6_cpu_lowlevel_init();
+
+ if (IS_ENABLED(CONFIG_DEBUG_LL))
+ setup_uart();
+
+ imx6q_barebox_entry(fdt - get_runtime_offset());
+}
+
+ENTRY_FUNCTION(start_imx6qp_zii_rdu2, r0, r1, r2)
+{
+ void *fdt = __dtb_imx6qp_zii_rdu2_start;
+
+ imx6_cpu_lowlevel_init();
+
+ if (IS_ENABLED(CONFIG_DEBUG_LL))
+ setup_uart();
+
+ imx6q_barebox_entry(fdt - get_runtime_offset());
+}