4 files changed, 107 insertions, 0 deletions
diff --git a/arch/arm/boards/zii-imx7d-dev/Makefile b/arch/arm/boards/zii-imx7d-dev/Makefile
new file mode 100644
index 0000000000..01c7a259e9
--- /dev/null
+++ b/arch/arm/boards/zii-imx7d-dev/Makefile
@@ -0,0 +1,2 @@
+obj-y += board.o
+lwl-y += lowlevel.o
diff --git a/arch/arm/boards/zii-imx7d-dev/board.c b/arch/arm/boards/zii-imx7d-dev/board.c
new file mode 100644
index 0000000000..0a99976b7d
--- /dev/null
+++ b/arch/arm/boards/zii-imx7d-dev/board.c
@@ -0,0 +1,49 @@
+// SPDX-License-Identifier: GPL-2.0+
+
+/*
+ * Copyright (C) 2018 Zodiac Inflight Innovation
+ * Author: Andrey Smirnov <andrew.smirnov@gmail.com>
+ */
+
+#include <common.h>
+#include <init.h>
+#include <io.h>
+#include <gpio.h>
+#include <mach/imx7-regs.h>
+#include <mfd/imx7-iomuxc-gpr.h>
+#include <environment.h>
+#include <envfs.h>
+#include <mach/bbu.h>
+
+static void zii_imx7d_rpu2_init_fec(void)
+{
+	void __iomem *gpr = IOMEM(MX7_IOMUXC_GPR_BASE_ADDR);
+	uint32_t gpr1;
+
+	/*
+	 * Make sure we do not drive ENETn_TX_CLK signal
+	 */
+	gpr1 = readl(gpr + IOMUXC_GPR1);
+	gpr1 &= ~(IMX7D_GPR1_ENET1_TX_CLK_SEL_MASK |
+		  IMX7D_GPR1_ENET1_CLK_DIR_MASK |
+		  IMX7D_GPR1_ENET2_TX_CLK_SEL_MASK |
+		  IMX7D_GPR1_ENET2_CLK_DIR_MASK);
+	writel(gpr1, gpr + IOMUXC_GPR1);
+}
+
+static int zii_imx7d_rpu2_coredevices_init(void)
+{
+	if (!of_machine_is_compatible("zii,imx7d-zii-rpu2"))
+		return 0;
+
+	zii_imx7d_rpu2_init_fec();
+
+	imx7_bbu_internal_spi_i2c_register_handler("SPI", "/dev/m25p0.barebox",
+						   BBU_HANDLER_FLAG_DEFAULT);
+
+	imx7_bbu_internal_mmcboot_register_handler("eMMC", "/dev/mmc2", 0);
+
+	return 0;
+}
+coredevice_initcall(zii_imx7d_rpu2_coredevices_init);
+
diff --git a/arch/arm/boards/zii-imx7d-dev/flash-header-zii-imx7d-dev.imxcfg b/arch/arm/boards/zii-imx7d-dev/flash-header-zii-imx7d-dev.imxcfg
new file mode 100644
index 0000000000..46f3d95048
--- /dev/null
+++ b/arch/arm/boards/zii-imx7d-dev/flash-header-zii-imx7d-dev.imxcfg
@@ -0,0 +1,6 @@
+soc imx7
+loadaddr 0x80000000
+dcdofs 0x400
+
+#include <mach/flash-header/imx7d-ddr-sabresd.imxcfg>
+
diff --git a/arch/arm/boards/zii-imx7d-dev/lowlevel.c b/arch/arm/boards/zii-imx7d-dev/lowlevel.c
new file mode 100644
index 0000000000..d7f8feb951
--- /dev/null
+++ b/arch/arm/boards/zii-imx7d-dev/lowlevel.c
@@ -0,0 +1,50 @@
+// SPDX-License-Identifier: GPL-2.0+
+
+/*
+ * Copyright (C) 2018 Zodiac Inflight Innovation
+ * Author: Andrey Smirnov <andrew.smirnov@gmail.com>
+ */
+
+#include <debug_ll.h>
+#include <io.h>
+#include <common.h>
+#include <linux/sizes.h>
+#include <mach/generic.h>
+#include <asm/barebox-arm-head.h>
+#include <asm/barebox-arm.h>
+#include <mach/imx7-ccm-regs.h>
+#include <mach/iomux-mx7.h>
+#include <mach/debug_ll.h>
+#include <asm/cache.h>
+#include <mach/esdctl.h>
+
+extern char __dtb_imx7d_zii_rpu2_start[];
+
+static inline void setup_uart(void)
+{
+	void __iomem *iomux = IOMEM(MX7_IOMUXC_BASE_ADDR);
+	void __iomem *ccm   = IOMEM(MX7_CCM_BASE_ADDR);
+
+	writel(CCM_CCGR_SETTINGn_NEEDED(0),
+	       ccm + CCM_CCGRn_CLR(CCM_CCGR_UART2));
+	writel(CCM_TARGET_ROOTn_ENABLE | UART2_CLK_ROOT__OSC_24M,
+	       ccm + CCM_TARGET_ROOTn(UART2_CLK_ROOT));
+	writel(CCM_CCGR_SETTINGn_NEEDED(0),
+	       ccm + CCM_CCGRn_SET(CCM_CCGR_UART2));
+
+	mx7_setup_pad(iomux, MX7D_PAD_UART2_TX_DATA__UART2_DCE_TX);
+
+	imx7_uart_setup_ll();
+
+	putc_ll('>');
+}
+
+ENTRY_FUNCTION(start_zii_imx7d_dev, r0, r1, r2)
+{
+	imx7_cpu_lowlevel_init();
+
+	if (IS_ENABLED(CONFIG_DEBUG_LL))
+		setup_uart();
+
+	imx7d_barebox_entry(__dtb_imx7d_zii_rpu2_start + get_runtime_offset());
+}