[AVR32] Board code for ATNGW100

Add board code and defconfig for the ATNGW100 Network Gateway kit.
For more information about this board, see

http://www.atmel.com/dyn/products/tools_card.asp?tool_id=4102

Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>

arch/avr32/boards/atngw100/setup.c

@@ -0,0 +1,124 @@
+/*
+ * Board-specific setup code for the ATNGW100 Network Gateway
+ *
+ * Copyright (C) 2005-2006 Atmel Corporation
+ *
+ * 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.
+ */
+#include <linux/clk.h>
+#include <linux/etherdevice.h>
+#include <linux/init.h>
+#include <linux/linkage.h>
+#include <linux/platform_device.h>
+#include <linux/types.h>
+#include <linux/spi/spi.h>
+
+#include <asm/io.h>
+#include <asm/setup.h>
+
+#include <asm/arch/at32ap7000.h>
+#include <asm/arch/board.h>
+#include <asm/arch/init.h>
+
+/* Initialized by bootloader-specific startup code. */
+struct tag *bootloader_tags __initdata;
+
+struct eth_addr {
+	u8 addr[6];
+};
+static struct eth_addr __initdata hw_addr[2];
+static struct eth_platform_data __initdata eth_data[2];
+
+static struct spi_board_info spi0_board_info[] __initdata = {
+	{
+		.modalias	= "mtd_dataflash",
+		.max_speed_hz	= 10000000,
+		.chip_select	= 0,
+	},
+};
+
+/*
+ * The next two functions should go away as the boot loader is
+ * supposed to initialize the macb address registers with a valid
+ * ethernet address. But we need to keep it around for a while until
+ * we can be reasonably sure the boot loader does this.
+ *
+ * The phy_id is ignored as the driver will probe for it.
+ */
+static int __init parse_tag_ethernet(struct tag *tag)
+{
+	int i;
+
+	i = tag->u.ethernet.mac_index;
+	if (i < ARRAY_SIZE(hw_addr))
+		memcpy(hw_addr[i].addr, tag->u.ethernet.hw_address,
+		       sizeof(hw_addr[i].addr));
+
+	return 0;
+}
+__tagtable(ATAG_ETHERNET, parse_tag_ethernet);
+
+static void __init set_hw_addr(struct platform_device *pdev)
+{
+	struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	const u8 *addr;
+	void __iomem *regs;
+	struct clk *pclk;
+
+	if (!res)
+		return;
+	if (pdev->id >= ARRAY_SIZE(hw_addr))
+		return;
+
+	addr = hw_addr[pdev->id].addr;
+	if (!is_valid_ether_addr(addr))
+		return;
+
+	/*
+	 * Since this is board-specific code, we'll cheat and use the
+	 * physical address directly as we happen to know that it's
+	 * the same as the virtual address.
+	 */
+	regs = (void __iomem __force *)res->start;
+	pclk = clk_get(&pdev->dev, "pclk");
+	if (!pclk)
+		return;
+
+	clk_enable(pclk);
+	__raw_writel((addr[3] << 24) | (addr[2] << 16)
+		     | (addr[1] << 8) | addr[0], regs + 0x98);
+	__raw_writel((addr[5] << 8) | addr[4], regs + 0x9c);
+	clk_disable(pclk);
+	clk_put(pclk);
+}
+
+struct platform_device *at32_usart_map[1];
+unsigned int at32_nr_usarts = 1;
+
+void __init setup_board(void)
+{
+	at32_map_usart(1, 0);	/* USART 1: /dev/ttyS0, DB9 */
+	at32_setup_serial_console(0);
+}
+
+static int __init atngw100_init(void)
+{
+	/*
+	 * ATNGW100 uses 16-bit SDRAM interface, so we don't need to
+	 * reserve any pins for it.
+	 */
+
+	at32_add_system_devices();
+
+	at32_add_device_usart(0);
+
+	set_hw_addr(at32_add_device_eth(0, &eth_data[0]));
+	set_hw_addr(at32_add_device_eth(1, &eth_data[1]));
+
+	at32_add_device_spi(0, spi0_board_info, ARRAY_SIZE(spi0_board_info));
+
+	return 0;
+}
+postcore_initcall(atngw100_init);