ARM: Add phyCORE-RK3288 SOM support

The phyCORE-RK3288 aka PCM-059 is a SoM (System on Module)
containing a RK3288 SoC. The module can be connected to different
carrier boards.

Signed-off-by: Wadim Egorov <w.egorov@phytec.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

8 files changed, 99 insertions, 0 deletions

diff --git a/arch/arm/boards/Makefile b/arch/arm/boards/Makefile
index 35b636f0cf..23a8dbd7d0 100644
--- a/arch/arm/boards/Makefile
+++ b/arch/arm/boards/Makefile
@@ -96,6 +96,7 @@ obj-$(CONFIG_MACH_PM9G45)			+= pm9g45/
 obj-$(CONFIG_MACH_QIL_A9260)			+= qil-a926x/
 obj-$(CONFIG_MACH_QIL_A9G20)			+= qil-a926x/
 obj-$(CONFIG_MACH_RADXA_ROCK)			+= radxa-rock/
+obj-$(CONFIG_MACH_PHYTEC_SOM_RK3288)		+= phytec-som-rk3288/
 obj-$(CONFIG_MACH_REALQ7)			+= datamodul-edm-qmx6/
 obj-$(CONFIG_MACH_RPI_COMMON)			+= raspberry-pi/
 obj-$(CONFIG_MACH_SABRELITE)			+= freescale-mx6-sabrelite/
diff --git a/arch/arm/boards/phytec-som-rk3288/Makefile b/arch/arm/boards/phytec-som-rk3288/Makefile
new file mode 100644
index 0000000000..6f34c9a2f2
--- /dev/null
+++ b/arch/arm/boards/phytec-som-rk3288/Makefile
@@ -0,0 +1,3 @@
+obj-y += board.o
+lwl-y += lowlevel.o
+bbenv-y += defaultenv-physom-rk3288
diff --git a/arch/arm/boards/phytec-som-rk3288/board.c b/arch/arm/boards/phytec-som-rk3288/board.c
new file mode 100644
index 0000000000..8ea6c6c47c
--- /dev/null
+++ b/arch/arm/boards/phytec-som-rk3288/board.c
@@ -0,0 +1,31 @@
+/*
+ * Copyright (C) 2016 PHYTEC Messtechnik GmbH,
+ * Author: Wadim Egorov <w.egorov@phytec.de>
+ *
+ * Device initialization for the phyCORE-RK3288 SoM
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ *
+ * 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 <common.h>
+#include <init.h>
+#include <envfs.h>
+
+static int physom_devices_init(void)
+{
+	if (!of_machine_is_compatible("phytec,rk3288-phycore-som"))
+		return 0;
+
+	barebox_set_hostname("pcm059");
+	defaultenv_append_directory(defaultenv_physom_rk3288);
+
+	return 0;
+}
+device_initcall(physom_devices_init);
diff --git a/arch/arm/boards/phytec-som-rk3288/defaultenv-physom-rk3288/boot/emmc b/arch/arm/boards/phytec-som-rk3288/defaultenv-physom-rk3288/boot/emmc
new file mode 100644
index 0000000000..731b07f604
--- /dev/null
+++ b/arch/arm/boards/phytec-som-rk3288/defaultenv-physom-rk3288/boot/emmc
@@ -0,0 +1,6 @@
+#!/bin/sh
+
+global.bootm.image=/mnt/emmc/linuximage
+global.bootm.oftree=/mnt/emmc/oftree
+
+global.linux.bootargs.dyn.root="root=/dev/mmcblk0p2 rw rootwait"
diff --git a/arch/arm/boards/phytec-som-rk3288/defaultenv-physom-rk3288/boot/mmc b/arch/arm/boards/phytec-som-rk3288/defaultenv-physom-rk3288/boot/mmc
new file mode 100644
index 0000000000..5b19dbac02
--- /dev/null
+++ b/arch/arm/boards/phytec-som-rk3288/defaultenv-physom-rk3288/boot/mmc
@@ -0,0 +1,6 @@
+#!/bin/sh
+
+global.bootm.image=/mnt/sdmmc/linuximage
+global.bootm.oftree=/mnt/sdmmc/oftree
+
+global.linux.bootargs.dyn.root="root=/dev/mmcblk1p2 rw rootwait"
diff --git a/arch/arm/boards/phytec-som-rk3288/defaultenv-physom-rk3288/init/automount-mmc b/arch/arm/boards/phytec-som-rk3288/defaultenv-physom-rk3288/init/automount-mmc
new file mode 100644
index 0000000000..8b3f043bba
--- /dev/null
+++ b/arch/arm/boards/phytec-som-rk3288/defaultenv-physom-rk3288/init/automount-mmc
@@ -0,0 +1,7 @@
+#!/bin/sh
+
+mkdir -p /mnt/emmc
+automount -d /mnt/emmc 'mshc0.probe=1 && [ -e /dev/mshc0.0 ] && mount /dev/mshc0.0 /mnt/emmc'
+
+mkdir -p /mnt/sdmmc
+automount -d /mnt/sdmmc 'mshc1.probe=1 && [ -e /dev/mshc1.0 ] && mount /dev/mshc1.0 /mnt/sdmmc'
diff --git a/arch/arm/boards/phytec-som-rk3288/defaultenv-physom-rk3288/nv/boot.default b/arch/arm/boards/phytec-som-rk3288/defaultenv-physom-rk3288/nv/boot.default
new file mode 100644
index 0000000000..b4cedfc16b
--- /dev/null
+++ b/arch/arm/boards/phytec-som-rk3288/defaultenv-physom-rk3288/nv/boot.default
@@ -0,0 +1 @@
+emmc mmc
diff --git a/arch/arm/boards/phytec-som-rk3288/lowlevel.c b/arch/arm/boards/phytec-som-rk3288/lowlevel.c
new file mode 100644
index 0000000000..7804a55bcd
--- /dev/null
+++ b/arch/arm/boards/phytec-som-rk3288/lowlevel.c
@@ -0,0 +1,44 @@
+/*
+ * Copyright (C) 2016 PHYTEC Messtechnik GmbH,
+ * Author: Wadim Egorov <w.egorov@phytec.de>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ *
+ * 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 <common.h>
+#include <linux/sizes.h>
+#include <asm/barebox-arm-head.h>
+#include <asm/barebox-arm.h>
+#include <mach/rk3288-regs.h>
+#include <mach/grf_rk3288.h>
+#include <mach/hardware.h>
+#include <debug_ll.h>
+
+extern char __dtb_rk3288_phycore_som_start[];
+
+ENTRY_FUNCTION(start_rk3288_phycore_som, r0, r1, r2)
+{
+	void *fdt;
+	arm_cpu_lowlevel_init();
+
+	if (IS_ENABLED(CONFIG_DEBUG_LL)) {
+		struct rk3288_grf * const grf = (void *)RK3288_GRF_BASE;
+		rk_clrsetreg(&grf->gpio4c_iomux,
+			GPIO4C1_MASK << GPIO4C1_SHIFT |
+			GPIO4C0_MASK << GPIO4C0_SHIFT,
+			GPIO4C1_UART0BT_SOUT << GPIO4C1_SHIFT |
+			GPIO4C0_UART0BT_SIN << GPIO4C0_SHIFT);
+		INIT_LL();
+	}
+
+	fdt = __dtb_rk3288_phycore_som_start - get_runtime_offset();
+
+	barebox_arm_entry(0x0, SZ_1G, fdt);
+}