path: root/recipes/linux/linux-2.6.24/hipox/hipox-nand.patch

diff -Nurd linux-2.6.24-base/arch/arm/mach-hipox/hipox.c linux-2.6.24/arch/arm/mach-hipox/hipox.c
--- linux-2.6.24-base/arch/arm/mach-hipox/hipox.c	2009-04-16 13:21:06.000000000 +0000
+++ linux-2.6.24/arch/arm/mach-hipox/hipox.c	2009-04-17 07:04:33.000000000 +0000
@@ -155,7 +155,7 @@
     { CORE_MODULE_BASE,     __phys_to_pfn(CORE_MODULE_BASE_PA),     SZ_4K,   MT_DEVICE },
     { APB_BRIDGE_A_BASE,    __phys_to_pfn(APB_BRIDGE_A_BASE_PA),    SZ_16M,  MT_DEVICE },
     { STATIC_CONTROL_BASE,  __phys_to_pfn(STATIC_CONTROL_BASE_PA),  SZ_4K,   MT_DEVICE },
-    { STATIC_CS0_BASE,      __phys_to_pfn(STATIC_CS0_BASE_PA),      SZ_4K,   MT_DEVICE },
+    { STATIC_CS0_BASE,      __phys_to_pfn(STATIC_CS0_BASE_PA),      SZ_4M,   MT_DEVICE },
     { STATIC_CS1_BASE,      __phys_to_pfn(STATIC_CS1_BASE_PA),      SZ_4K,   MT_DEVICE },
     { STATIC_CS2_BASE,      __phys_to_pfn(STATIC_CS2_BASE_PA),      SZ_4K,   MT_DEVICE },
     { APB_BRIDGE_B_BASE,    __phys_to_pfn(APB_BRIDGE_B_BASE_PA),    SZ_16M,  MT_DEVICE },
diff -Nurd linux-2.6.24-base/drivers/mtd/maps/physmap.c linux-2.6.24/drivers/mtd/maps/physmap.c
--- linux-2.6.24-base/drivers/mtd/maps/physmap.c	2008-01-24 22:58:37.000000000 +0000
+++ linux-2.6.24/drivers/mtd/maps/physmap.c	2009-04-17 07:04:33.000000000 +0000
@@ -22,6 +22,12 @@
 #include <linux/mtd/physmap.h>
 #include <asm/io.h>
 
+#if defined (CONFIG_ARCH_HIPOX)
+#include <asm/arch/hardware.h>
+/* timing for NOR flash */
+#define STATIC_BUS_FLASH_CONFIG 0x4f1f3f0d  /* fast ASIC settings, 70ns */
+#endif /* CONFIG_ARCH_HIPOX */
+
 struct physmap_flash_info {
 	struct mtd_info		*mtd;
 	struct map_info		map;
@@ -88,6 +94,11 @@
 	if (physmap_data == NULL)
 		return -ENODEV;
 
+#if defined (CONFIG_ARCH_HIPOX)
+/* init timing for static memory controller */
+		 writel(STATIC_BUS_FLASH_CONFIG, STATIC_CONTROL_BANK0);
+#endif /* CONFIG_ARCH_HIPOX */
+
        	printk(KERN_NOTICE "physmap platform flash device: %.8llx at %.8llx\n",
 	    (unsigned long long)(dev->resource->end - dev->resource->start + 1),
 	    (unsigned long long)dev->resource->start);
@@ -207,6 +218,10 @@
 #endif
 
 #ifdef PHYSMAP_COMPAT
+static void physmap_flash_release(struct device *dev)
+{
+}
+
 static struct physmap_flash_data physmap_flash_data = {
 	.width		= CONFIG_MTD_PHYSMAP_BANKWIDTH,
 };
@@ -222,6 +237,7 @@
 	.id		= 0,
 	.dev		= {
 		.platform_data	= &physmap_flash_data,
+		.release	= physmap_flash_release, /* needed for module build */
 	},
 	.num_resources	= 1,
 	.resource	= &physmap_flash_resource,
diff -Nurd linux-2.6.24-base/drivers/mtd/nand/Kconfig linux-2.6.24/drivers/mtd/nand/Kconfig
--- linux-2.6.24-base/drivers/mtd/nand/Kconfig	2008-01-24 22:58:37.000000000 +0000
+++ linux-2.6.24/drivers/mtd/nand/Kconfig	2009-04-17 07:04:33.000000000 +0000
@@ -283,6 +283,11 @@
 	tristate "Support for NAND Flash on CM-X270 modules"
 	depends on MTD_NAND && MACH_ARMCORE
 
+config MTD_NAND_HIPOX
+	tristate "NAND Flash device on OXE810 based HydraIP board"
+	depends on MTD_NAND && ARCH_HIPOX
+	help
+	  Support for NAND flash on OXE180 based HydraIP platform.
 
 config MTD_NAND_NANDSIM
 	tristate "Support for NAND Flash Simulator"
diff -Nurd linux-2.6.24-base/drivers/mtd/nand/Makefile linux-2.6.24/drivers/mtd/nand/Makefile
--- linux-2.6.24-base/drivers/mtd/nand/Makefile	2008-01-24 22:58:37.000000000 +0000
+++ linux-2.6.24/drivers/mtd/nand/Makefile	2009-04-17 07:04:33.000000000 +0000
@@ -29,5 +29,6 @@
 obj-$(CONFIG_MTD_NAND_BASLER_EXCITE)	+= excite_nandflash.o
 obj-$(CONFIG_MTD_NAND_PLATFORM)		+= plat_nand.o
 obj-$(CONFIG_MTD_ALAUDA)		+= alauda.o
+obj-$(CONFIG_MTD_NAND_HIPOX)    += hipox_nand.o
 
 nand-objs := nand_base.o nand_bbt.o
diff -Nurd linux-2.6.24-base/drivers/mtd/nand/hipox_nand.c linux-2.6.24/drivers/mtd/nand/hipox_nand.c
--- linux-2.6.24-base/drivers/mtd/nand/hipox_nand.c	1970-01-01 00:00:00.000000000 +0000
+++ linux-2.6.24/drivers/mtd/nand/hipox_nand.c	2009-04-17 07:26:17.000000000 +0000
@@ -0,0 +1,230 @@
+/*
+ * drivers/mtd/nand/hipox_nand.c
+ *
+ * Copyright (C) 2009 DResearch Digital Media Systems GmbH
+ *
+ * $Id:$
+ *
+ * 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.
+ *
+ * Overview:
+ *   This is a device driver for the NAND flash device found on the
+ *   OXE810 based HydraIP board.
+ */
+
+#include <linux/slab.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/nand.h>
+#include <linux/mtd/partitions.h>
+#include <linux/delay.h>
+#include <asm/io.h>
+#include <asm/arch/hardware.h>
+#include <asm/sizes.h>
+#include <asm/mach-types.h>
+
+// the testboards ran down to a value of 4
+//#define STATIC_BUS_FLASH_CONFIG 0x4f1f3f3f  /* slow settings, 345 ns */
+//#define STATIC_BUS_FLASH_CONFIG 0x4f1f3f0d  /* fast settings, 70 ns */
+//#define STATIC_BUS_FLASH_CONFIG 0x4f1f3f09  /* ultra fast settings, 50 ns */
+#define STATIC_BUS_FLASH_CONFIG 0x4f1f3f04  /* warp settings, 27 ns */
+
+/*
+ * MTD structure for HydraIP board
+ */
+static struct mtd_info *hipox_nand_mtd = NULL;
+
+#ifdef CONFIG_MTD_PARTITIONS
+static const char *part_probes[] = { "cmdlinepart", NULL };
+
+#define NUM_PARTITIONS 2
+
+/*
+ * Define static partitions for flash device
+ */
+static struct mtd_partition partition_info[NUM_PARTITIONS] = {
+	{
+		.name		= "boot",
+		.offset		= 0x00000000,
+		.size		= 0x02000000,
+	}, {
+		.name		= "system",
+		.offset		= 0x02000000,
+		.size		= 0x1e000000,
+	},
+};
+#endif
+
+
+/*
+ *	hardware specific access to control-lines
+ */
+static void hipox_nand_hwcontrol(struct mtd_info *mtd, int cmd, unsigned int ctrl)
+{
+	struct nand_chip *this = mtd->priv;
+
+	if (ctrl & NAND_CTRL_CHANGE) {
+		unsigned long IO_ADDR_W = (unsigned long) this->IO_ADDR_W;
+
+		IO_ADDR_W = CONFIG_SYS_NAND_BASE;
+
+		if (ctrl & NAND_NCE)
+			writel(0x20000000, GPIO_A_OUTPUT_CLEAR); /* assert CS-NAND */
+		else
+			writel(0x20000000, GPIO_A_OUTPUT_SET); /* deassert CS-NAND */
+
+		if (ctrl & NAND_CLE)
+			IO_ADDR_W = CONFIG_SYS_NAND_COMMAND_LATCH;
+		if (ctrl & NAND_ALE)
+			IO_ADDR_W = CONFIG_SYS_NAND_ADDRESS_LATCH;
+
+		this->IO_ADDR_W = (void *)IO_ADDR_W;
+	}
+
+	if (cmd != NAND_CMD_NONE)
+		writeb(cmd, this->IO_ADDR_W);
+}
+
+static void hipox_read_buf(struct mtd_info *mtd, uint8_t *buf, int len)
+{
+   struct nand_chip *chip = mtd->priv;
+   volatile uint8_t *io = chip->IO_ADDR_R;
+
+	if((((int)buf) & 1) || (len & 1))
+	{
+		while(len-- > 0)
+			*buf++ = *io;
+
+		return;
+	}
+
+	// now it's aligned, group to 16 bit access
+	{
+		uint16_t *ptr16 = (uint16_t *)buf;
+		len >>= 1;
+ 
+		while(len-- > 0)
+			*ptr16++ = *io | (*io << 8);
+	}
+}
+
+/*
+ * Main initialization routine
+ */
+static int __init hipox_nand_init(void)
+{
+	struct nand_chip *this;
+	const char *part_type = NULL;
+	int mtd_parts_nb = 0;
+	struct mtd_partition *mtd_parts = NULL;
+
+	if (!machine_is_hipox())
+		return -ENXIO;
+
+	/* Allocate memory for MTD device structure and private data */
+	hipox_nand_mtd = kmalloc(sizeof(struct mtd_info)+sizeof(struct nand_chip), GFP_KERNEL);
+
+	if (!hipox_nand_mtd) {
+		printk("Unable to allocate HIPOX_NAND MTD device structure.\n");
+		return -ENOMEM;
+	}
+
+	/* Get pointer to private data */
+	this = (struct nand_chip *)&hipox_nand_mtd[1];
+
+	if (!this) {
+		printk("Unable to allocate HIPOX_NAND MTD NAND device structure.\n");
+		kfree(hipox_nand_mtd);
+		return -ENOMEM;
+	}
+
+	writel(STATIC_BUS_FLASH_CONFIG, STATIC_CONTROL_BANK0);
+
+	/* Initialize structures */
+	memset(hipox_nand_mtd, 0, sizeof(struct mtd_info));
+	memset(this, 0, sizeof(struct nand_chip));
+
+	// assert CS-NAND
+	writel(0x20000000, GPIO_A_OUTPUT_SET);
+	writel(0x20000000, GPIO_A_OUTPUT_ENABLE_SET);
+
+	// deselect alternate function
+   writel(readl(SYS_CTRL_GPIO_PRIMSEL_CTRL_0) & ~0x20000000,
+		SYS_CTRL_GPIO_PRIMSEL_CTRL_0);
+   writel(readl(SYS_CTRL_GPIO_SECSEL_CTRL_0) & ~0x20000000,
+		SYS_CTRL_GPIO_SECSEL_CTRL_0);
+   writel(readl(SYS_CTRL_GPIO_TERTSEL_CTRL_0) & ~0x20000000,
+		SYS_CTRL_GPIO_TERTSEL_CTRL_0);
+
+	writel(0x20000000, GPIO_A_OUTPUT_CLEAR);
+
+	// reset NAND unit
+	writeb(0xff, CONFIG_SYS_NAND_COMMAND_LATCH); // reset command
+	udelay(500);
+
+	// deassert CS-NAND
+	writel(0x20000000, GPIO_A_OUTPUT_SET);
+
+	/* Link the private data with the MTD structure */
+	hipox_nand_mtd->priv = this;
+	hipox_nand_mtd->owner = THIS_MODULE;
+
+	/* insert callbacks */
+	this->IO_ADDR_R = (void *)CONFIG_SYS_NAND_BASE;
+	this->IO_ADDR_W = (void *)CONFIG_SYS_NAND_BASE;
+	this->cmd_ctrl = hipox_nand_hwcontrol;
+	this->read_buf = hipox_read_buf;
+	this->chip_delay = 25; // 23 still worked on our EvalBoard
+	this->ecc.mode = NAND_ECC_SOFT;
+	printk("Searching for NAND flash...\n");
+
+	/* Scan to find existence of the device */
+	if (nand_scan(hipox_nand_mtd, 1)) {
+		kfree(hipox_nand_mtd);
+		return -ENXIO;
+	}
+#ifdef CONFIG_MTD_PARTITIONS
+	hipox_nand_mtd->name = "hipox-nand";
+	mtd_parts_nb = parse_mtd_partitions(hipox_nand_mtd, part_probes, &mtd_parts, 0);
+	if (mtd_parts_nb > 0)
+		part_type = "command line";
+	else
+		mtd_parts_nb = 0;
+#endif
+	if (mtd_parts_nb == 0) {
+		mtd_parts = partition_info;
+		mtd_parts_nb = NUM_PARTITIONS;
+		part_type = "static";
+	}
+
+	/* Register the partitions */
+	printk(KERN_NOTICE "Using %s partition definition\n", part_type);
+	add_mtd_partitions(hipox_nand_mtd, mtd_parts, mtd_parts_nb);
+
+	/* Return happy */
+	return 0;
+}
+
+module_init(hipox_nand_init);
+
+/*
+ * Clean up routine
+ */
+static void __exit hipox_nand_cleanup(void)
+{
+	/* Unregister the device */
+	//del_mtd_device(hipox_nand_mtd);
+	nand_release(hipox_nand_mtd);
+
+	/* Free the MTD device structure */
+	kfree(hipox_nand_mtd);
+}
+
+module_exit(hipox_nand_cleanup);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Rene Grosser <rgrosser@dresearch.de>, Steffen Sledz <sledz@dresearch.de>");
+MODULE_DESCRIPTION("MTD map driver for OXE810 based HydraIP device");
diff -Nurd linux-2.6.24-base/include/asm-arm/arch-hipox/hardware.h linux-2.6.24/include/asm-arm/arch-hipox/hardware.h
--- linux-2.6.24-base/include/asm-arm/arch-hipox/hardware.h	2009-04-16 13:21:35.000000000 +0000
+++ linux-2.6.24/include/asm-arm/arch-hipox/hardware.h	2009-04-17 07:25:53.000000000 +0000
@@ -134,6 +134,11 @@
 #define COPRO_REGS_BASE        (APB_BRIDGE_B_BASE + 0xB00000)
 #define DMA_SG_BASE            (APB_BRIDGE_B_BASE + 0xC00000)
 
+/* NAND access */
+#define CONFIG_SYS_NAND_BASE    STATIC_CS0_BASE
+#define CONFIG_SYS_NAND_ADDRESS_LATCH   (CONFIG_SYS_NAND_BASE + 0x8000)
+#define CONFIG_SYS_NAND_COMMAND_LATCH   (CONFIG_SYS_NAND_BASE + 0x4000)
+
 /* Interrupt Controller registers */
 #define RPS_IC_BASE         RPS_BASE
 #define RPS_IRQ_STATUS     (RPS_IC_BASE)