Merge branch 'for-linus' of git://www.atmel.no/~hskinnemoen/linux/ker…

…nel/avr32

* 'for-linus' of git://www.atmel.no/~hskinnemoen/linux/kernel/avr32: (21 commits)
  [AVR32] Fix compile error with gcc 4.1
  avr32: remove unneeded cast in atomic.h
  AVR32: Remove useless config option "GENERIC_BUST_SPINLOCK".
  [AVR32] Optimize the TLB miss handler
  [AVR32] Board code for ATNGW100
  [AVR32] Use memcpy/memset in memcpy_{from,to}_io and memset_io
  [AVR32] Get rid of board_setup_fbmem()
  [AVR32] Reserve framebuffer memory in early_parse_fbmem()
  [AVR32] Simplify early handling of memory regions
  [AVR32] Move setup_bootmem() from mm/init.c to kernel/setup.c
  [AVR32] Make I/O access macros work with external devices
  [AVR32] Fix NMI handler
  [AVR32] Clean up exception handling code
  [AVR32] Clean up cpu identification and add features bitmap
  [AVR32] Clean up asm/sysreg.h
  [AVR32] Don't enable clocks with no users
  [AVR32] Put cpu in sleep 0 when idle.
  [AVR32] Change system timer from count-compare to Timer/Counter 0
  [AVR32] Add mach-specific Kconfig
  [AVR32] Add nwait and tdf parameters to SMC configuration
  ...

arch/avr32/Kconfig

@@ -57,9 +57,6 @@ config ARCH_HAS_ILOG2_U64
 	bool
 	default n
 
-config GENERIC_BUST_SPINLOCK
-	bool
-
 config GENERIC_HWEIGHT
 	bool
 	default y
@@ -68,6 +65,11 @@ config GENERIC_CALIBRATE_DELAY
 	bool
 	default y
 
+config GENERIC_BUG
+	bool
+	default y
+	depends on BUG
+
 source "init/Kconfig"
 
 menu "System Type and features"
@@ -106,6 +108,9 @@ choice
 config BOARD_ATSTK1000
 	bool "ATSTK1000 evaluation board"
 	select BOARD_ATSTK1002 if CPU_AT32AP7000
+
+config BOARD_ATNGW100
+	bool "ATNGW100 Network Gateway"
 endchoice
 
 choice
@@ -116,6 +121,8 @@ config	LOADER_U_BOOT
 	bool "U-Boot (or similar) bootloader"
 endchoice
 
+source "arch/avr32/mach-at32ap/Kconfig"
+
 config LOAD_ADDRESS
 	hex
 	default 0x10000000 if LOADER_U_BOOT=y && CPU_AT32AP7000=y

arch/avr32/Makefile

@@ -27,6 +27,7 @@ head-$(CONFIG_LOADER_U_BOOT)		+= arch/avr32/boot/u-boot/head.o
 head-y					+= arch/avr32/kernel/head.o
 core-$(CONFIG_PLATFORM_AT32AP)		+= arch/avr32/mach-at32ap/
 core-$(CONFIG_BOARD_ATSTK1000)		+= arch/avr32/boards/atstk1000/
+core-$(CONFIG_BOARD_ATNGW100)		+= arch/avr32/boards/atngw100/
 core-$(CONFIG_LOADER_U_BOOT)		+= arch/avr32/boot/u-boot/
 core-y					+= arch/avr32/kernel/
 core-y					+= arch/avr32/mm/

arch/avr32/boards/atngw100/Makefile

@@ -0,0 +1 @@
+obj-y				+= setup.o flash.o

arch/avr32/boards/atngw100/flash.c

@@ -0,0 +1,95 @@
+/*
+ * ATNGW100 board-specific flash initialization
+ *
+ * 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/init.h>
+#include <linux/platform_device.h>
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/partitions.h>
+#include <linux/mtd/physmap.h>
+
+#include <asm/arch/smc.h>
+
+static struct smc_config flash_config __initdata = {
+	.ncs_read_setup		= 0,
+	.nrd_setup		= 40,
+	.ncs_write_setup	= 0,
+	.nwe_setup		= 10,
+
+	.ncs_read_pulse		= 80,
+	.nrd_pulse		= 40,
+	.ncs_write_pulse	= 65,
+	.nwe_pulse		= 55,
+
+	.read_cycle		= 120,
+	.write_cycle		= 120,
+
+	.bus_width		= 2,
+	.nrd_controlled		= 1,
+	.nwe_controlled		= 1,
+	.byte_write		= 1,
+};
+
+static struct mtd_partition flash_parts[] = {
+	{
+		.name           = "u-boot",
+		.offset         = 0x00000000,
+		.size           = 0x00020000,           /* 128 KiB */
+		.mask_flags     = MTD_WRITEABLE,
+	},
+	{
+		.name           = "root",
+		.offset         = 0x00020000,
+		.size           = 0x007d0000,
+	},
+	{
+		.name           = "env",
+		.offset         = 0x007f0000,
+		.size           = 0x00010000,
+		.mask_flags     = MTD_WRITEABLE,
+	},
+};
+
+static struct physmap_flash_data flash_data = {
+	.width		= 2,
+	.nr_parts	= ARRAY_SIZE(flash_parts),
+	.parts		= flash_parts,
+};
+
+static struct resource flash_resource = {
+	.start		= 0x00000000,
+	.end		= 0x007fffff,
+	.flags		= IORESOURCE_MEM,
+};
+
+static struct platform_device flash_device = {
+	.name		= "physmap-flash",
+	.id		= 0,
+	.resource	= &flash_resource,
+	.num_resources	= 1,
+	.dev		= {
+		.platform_data = &flash_data,
+	},
+};
+
+/* This needs to be called after the SMC has been initialized */
+static int __init atngw100_flash_init(void)
+{
+	int ret;
+
+	ret = smc_set_configuration(0, &flash_config);
+	if (ret < 0) {
+		printk(KERN_ERR "atngw100: failed to set NOR flash timing\n");
+		return ret;
+	}
+
+	platform_device_register(&flash_device);
+
+	return 0;
+}
+device_initcall(atngw100_flash_init);

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);

arch/avr32/boards/atstk1000/atstk1002.c

@@ -33,7 +33,7 @@ struct eth_addr {
 static struct eth_addr __initdata hw_addr[2];
 
 static struct eth_platform_data __initdata eth_data[2];
-extern struct lcdc_platform_data atstk1000_fb0_data;
+static struct lcdc_platform_data atstk1000_fb0_data;
 
 static struct spi_board_info spi0_board_info[] __initdata = {
 	{
@@ -148,6 +148,8 @@ static int __init atstk1002_init(void)
 	set_hw_addr(at32_add_device_eth(0, &eth_data[0]));
 
 	at32_add_device_spi(0, spi0_board_info, ARRAY_SIZE(spi0_board_info));
+	atstk1000_fb0_data.fbmem_start = fbmem_start;
+	atstk1000_fb0_data.fbmem_size = fbmem_size;
 	at32_add_device_lcdc(0, &atstk1000_fb0_data);
 
 	return 0;

arch/avr32/boards/atstk1000/setup.c

@@ -18,33 +18,3 @@
 
 /* Initialized by bootloader-specific startup code. */
 struct tag *bootloader_tags __initdata;
-
-struct lcdc_platform_data __initdata atstk1000_fb0_data;
-
-void __init board_setup_fbmem(unsigned long fbmem_start,
-			      unsigned long fbmem_size)
-{
-	if (!fbmem_size)
-		return;
-
-	if (!fbmem_start) {
-		void *fbmem;
-
-		fbmem = alloc_bootmem_low_pages(fbmem_size);
-		fbmem_start = __pa(fbmem);
-	} else {
-		pg_data_t *pgdat;
-
-		for_each_online_pgdat(pgdat) {
-			if (fbmem_start >= pgdat->bdata->node_boot_start
-			    && fbmem_start <= pgdat->bdata->node_low_pfn)
-				reserve_bootmem_node(pgdat, fbmem_start,
-						     fbmem_size);
-		}
-	}
-
-	printk("%luKiB framebuffer memory at address 0x%08lx\n",
-	       fbmem_size >> 10, fbmem_start);
-	atstk1000_fb0_data.fbmem_start = fbmem_start;
-	atstk1000_fb0_data.fbmem_size = fbmem_size;
-}