summaryrefslogtreecommitdiff
path: root/arch/m68k/coldfire/amcore.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/m68k/coldfire/amcore.c')
-rw-r--r--arch/m68k/coldfire/amcore.c156
1 files changed, 156 insertions, 0 deletions
diff --git a/arch/m68k/coldfire/amcore.c b/arch/m68k/coldfire/amcore.c
new file mode 100644
index 000000000000..c6cb1a5cc1a5
--- /dev/null
+++ b/arch/m68k/coldfire/amcore.c
@@ -0,0 +1,156 @@
+/*
+ * amcore.c -- Support for Sysam AMCORE open board
+ *
+ * (C) Copyright 2016, Angelo Dureghello <angelo@sysam.it>
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file COPYING in the main directory of this archive
+ * for more details.
+ */
+
+#include <linux/device.h>
+#include <linux/platform_device.h>
+#include <linux/dm9000.h>
+#include <linux/irq.h>
+#include <linux/interrupt.h>
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/map.h>
+#include <linux/mtd/partitions.h>
+#include <linux/mtd/physmap.h>
+#include <linux/i2c.h>
+
+#include <asm/coldfire.h>
+#include <asm/mcfsim.h>
+#include <asm/io.h>
+
+#if IS_ENABLED(CONFIG_DM9000)
+
+#define DM9000_IRQ 25
+#define DM9000_ADDR 0x30000000
+
+/*
+ * DEVICES and related device RESOURCES
+ */
+static struct resource dm9000_resources[] = {
+ /* physical address of the address register (CMD [A2] to 0)*/
+ [0] = {
+ .start = DM9000_ADDR,
+ .end = DM9000_ADDR,
+ .flags = IORESOURCE_MEM,
+ },
+ /*
+ * physical address of the data register (CMD [A2] to 1),
+ * driver wants a range >=4 to assume a 32bit data bus
+ */
+ [1] = {
+ .start = DM9000_ADDR + 4,
+ .end = DM9000_ADDR + 7,
+ .flags = IORESOURCE_MEM,
+ },
+ /* IRQ line the device's interrupt pin is connected to */
+ [2] = {
+ .start = DM9000_IRQ,
+ .end = DM9000_IRQ,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static struct dm9000_plat_data dm9000_platdata = {
+ .flags = DM9000_PLATF_32BITONLY,
+};
+
+static struct platform_device dm9000_device = {
+ .name = "dm9000",
+ .id = 0,
+ .num_resources = ARRAY_SIZE(dm9000_resources),
+ .resource = dm9000_resources,
+ .dev = {
+ .platform_data = &dm9000_platdata,
+ }
+};
+#endif
+
+static void __init dm9000_pre_init(void)
+{
+ /* Set the dm9000 interrupt to be auto-vectored */
+ mcf_autovector(DM9000_IRQ);
+}
+
+/*
+ * Partitioning of parallel NOR flash (39VF3201B)
+ */
+static struct mtd_partition amcore_partitions[] = {
+ {
+ .name = "U-Boot (128K)",
+ .size = 0x20000,
+ .offset = 0x0
+ },
+ {
+ .name = "Kernel+ROMfs (2994K)",
+ .size = 0x2E0000,
+ .offset = MTDPART_OFS_APPEND
+ },
+ {
+ .name = "Flash Free Space (1024K)",
+ .size = MTDPART_SIZ_FULL,
+ .offset = MTDPART_OFS_APPEND
+ }
+};
+
+static struct physmap_flash_data flash_data = {
+ .parts = amcore_partitions,
+ .nr_parts = ARRAY_SIZE(amcore_partitions),
+ .width = 2,
+};
+
+static struct resource flash_resource = {
+ .start = 0xffc00000,
+ .end = 0xffffffff,
+ .flags = IORESOURCE_MEM,
+};
+
+static struct platform_device flash_device = {
+ .name = "physmap-flash",
+ .id = -1,
+ .resource = &flash_resource,
+ .num_resources = 1,
+ .dev = {
+ .platform_data = &flash_data,
+ },
+};
+
+static struct platform_device rtc_device = {
+ .name = "rtc-ds1307",
+ .id = -1,
+};
+
+static struct i2c_board_info amcore_i2c_info[] __initdata = {
+ {
+ I2C_BOARD_INFO("ds1338", 0x68),
+ },
+};
+
+static struct platform_device *amcore_devices[] __initdata = {
+#if IS_ENABLED(CONFIG_DM9000)
+ &dm9000_device,
+#endif
+ &flash_device,
+ &rtc_device,
+};
+
+static int __init init_amcore(void)
+{
+#if IS_ENABLED(CONFIG_DM9000)
+ dm9000_pre_init();
+#endif
+
+ /* Add i2c RTC Dallas chip supprt */
+ i2c_register_board_info(0, amcore_i2c_info,
+ ARRAY_SIZE(amcore_i2c_info));
+
+ platform_add_devices(amcore_devices, ARRAY_SIZE(amcore_devices));
+
+ return 0;
+}
+
+arch_initcall(init_amcore);