diff options
Diffstat (limited to 'packages/linux/linux-2.6.23+2.6.24-rc5/gesbc-9302/0001-gesbc-nand.patch')
| -rw-r--r-- | packages/linux/linux-2.6.23+2.6.24-rc5/gesbc-9302/0001-gesbc-nand.patch | 306 |
1 files changed, 306 insertions, 0 deletions
diff --git a/packages/linux/linux-2.6.23+2.6.24-rc5/gesbc-9302/0001-gesbc-nand.patch b/packages/linux/linux-2.6.23+2.6.24-rc5/gesbc-9302/0001-gesbc-nand.patch new file mode 100644 index 0000000000..0f5e909148 --- /dev/null +++ b/packages/linux/linux-2.6.23+2.6.24-rc5/gesbc-9302/0001-gesbc-nand.patch @@ -0,0 +1,306 @@ +From 9819226a16a12ba0545e90b475fa70d408544971 Mon Sep 17 00:00:00 2001 +From: Cliff Brake <cbrake@happy.(none)> +Date: Mon, 17 Dec 2007 16:45:47 -0500 +Subject: [PATCH] gesbc-nand + +--- + drivers/mtd/nand/Kconfig | 7 ++ + drivers/mtd/nand/Makefile | 1 + + drivers/mtd/nand/gesbc.c | 255 +++++++++++++++++++++++++++++++++++++++++++++ + 3 files changed, 263 insertions(+), 0 deletions(-) + create mode 100644 drivers/mtd/nand/gesbc.c + +diff --git a/drivers/mtd/nand/Kconfig b/drivers/mtd/nand/Kconfig +index 246d451..cde3146 100644 +--- a/drivers/mtd/nand/Kconfig ++++ b/drivers/mtd/nand/Kconfig +@@ -51,6 +51,13 @@ config MTD_NAND_EDB7312 + This enables the driver for the Cirrus Logic EBD7312 evaluation + board to access the onboard NAND Flash. + ++config MTD_NAND_GESBC ++ tristate "Support for Glomation GESBC-93xx board" ++ depends on MTD_NAND && MACH_EDB9302 ++ help ++ This enables the driver for the Glomation GESBC-93xx ++ board to access the onboard NAND Flash. ++ + config MTD_NAND_H1900 + tristate "iPAQ H1900 flash" + depends on ARCH_PXA && MTD_PARTITIONS +diff --git a/drivers/mtd/nand/Makefile b/drivers/mtd/nand/Makefile +index 3ad6c01..58c1961 100644 +--- a/drivers/mtd/nand/Makefile ++++ b/drivers/mtd/nand/Makefile +@@ -12,6 +12,7 @@ obj-$(CONFIG_MTD_NAND_AMS_DELTA) += ams-delta.o + obj-$(CONFIG_MTD_NAND_TOTO) += toto.o + obj-$(CONFIG_MTD_NAND_AUTCPU12) += autcpu12.o + obj-$(CONFIG_MTD_NAND_EDB7312) += edb7312.o ++obj-$(CONFIG_MTD_NAND_GESBC) += gesbc.o + obj-$(CONFIG_MTD_NAND_AU1550) += au1550nd.o + obj-$(CONFIG_MTD_NAND_BF5XX) += bf5xx_nand.o + obj-$(CONFIG_MTD_NAND_PPCHAMELEONEVB) += ppchameleonevb.o +diff --git a/drivers/mtd/nand/gesbc.c b/drivers/mtd/nand/gesbc.c +new file mode 100644 +index 0000000..a5844b1 +--- /dev/null ++++ b/drivers/mtd/nand/gesbc.c +@@ -0,0 +1,255 @@ ++/* ++ * drivers/mtd/nand/gesbc-9302.c ++ * ++ * Copyright (C) 2004 Glomation (support@glomationinc.com) ++ * ++ * Derived from drivers/mtd/nand/edb7312.c ++ * Copyright (C) 2004 Marius Grer (mag@sysgo.de) ++ * ++ * Derived from drivers/mtd/nand/autcpu12.c ++ * Copyright (c) 2001 Thomas Gleixner (gleixner@autronix.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. ++ * ++ * Overview: ++ * This is a device driver for the NAND flash device found on the ++ * GESBC-93xx board with Samsung 128/256/512 Mbyte part. ++ */ ++ ++#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 <asm/io.h> ++#include <asm/arch/hardware.h> ++#include <asm/sizes.h> ++ ++#define GESBC_NAND_FLASH_DATA 0x10000000 ++ ++#define GPIO_PADR EP93XX_GPIO_REG(0x0) ++#define GPIO_PADDR EP93XX_GPIO_REG(0x10) ++#define SMCBCR1 (EP93XX_AHB_VIRT_BASE + 0x00082000 + 0x04) ++ ++/* ++ * MTD structure for GESBC-93xx board ++ */ ++static struct mtd_info *gesbc_mtd = NULL; ++ ++ ++/* ++ * Module stuff ++ */ ++static unsigned long gesbc_fio_pbase = GESBC_NAND_FLASH_DATA; ++ ++#ifdef CONFIG_MTD_PARTITIONS ++/* ++ * Define static partitions for flash device ++ */ ++static struct mtd_partition partition_info32[] = { ++ { .name= "GESBC NAND FLASH", ++ .offset= 0, ++ .size= 128*1024*1024 }, ++}; ++/* ++ * Define static partitions for flash device ++ */ ++static struct mtd_partition partition_info128[] = { ++ { .name= "GESBC NAND FLASH", ++ .offset= 0, ++ .size= 128*1024*1024 }, ++}; ++ ++/* ++ * Define static partitions for flash device ++ */ ++static struct mtd_partition partition_info256[] = { ++ { .name= "GESBC NAND FLASH", ++ .offset= 0, ++ .size= 256*1024*1024 }, ++}; ++ ++/* ++ * Define static partitions for flash device ++ */ ++static struct mtd_partition partition_info512[] = { ++ { .name= "GESBC NAND FLASH", ++ .offset= 0, ++ .size= 512*1024*1024 }, ++}; ++ ++#define NUM_PARTITIONS 1 ++#endif ++ ++ ++/* ++ * hardware specific access to control-lines ++ * NAND_NCE: bit 0 -> bit 3 ++ * NAND_CLE: bit 1 -> bit 4 ++ * NAND_ALE: bit 2 -> bit 6 ++ */ ++static void gesbc_hwcontrol(struct mtd_info *mtd, int cmd, int ctrl) ++{ ++ unsigned long flags; ++ struct nand_chip *chip = mtd->priv; ++ ++ /* Disbale interrupt to avoid race condition */ ++ local_irq_save(flags); ++ ++ if (ctrl & NAND_CTRL_CHANGE) { ++ unsigned char bits; ++ ++ bits = (ctrl & NAND_CLE) << 3; ++ bits |= (ctrl & NAND_ALE) << 4; ++ if (ctrl & NAND_NCE) ++ bits &= ~0x08; ++ else ++ bits |= 0x08; ++ ++ __raw_writel( (__raw_readl(GPIO_PADR) & ~0x58 )| bits, GPIO_PADR); ++ } ++ if (cmd != NAND_CMD_NONE) ++ writeb(cmd, chip->IO_ADDR_W); ++ /* Restore interrupt state */ ++ local_irq_restore(flags); ++} ++ ++/* ++ * read device ready pin ++ */ ++static int gesbc_device_ready(struct mtd_info *mtd) ++{ ++ return (__raw_readl(GPIO_PADR) & 0x80) >> 7; ++} ++ ++#define MTDID "s3c2440-nand" ++ ++static const char *probes[] = { "cmdlinepart", NULL }; ++ ++ ++ ++/* ++ * Main initialization routine ++ */ ++static int __init gesbc_nand_init (void) ++{ ++ struct nand_chip *this; ++ const char *part_type = 0; ++ int mtd_parts_nb = 0; ++ struct mtd_partition *mtd_parts = 0; ++ unsigned long flags; ++ void * gesbc_fio_base; ++ ++ /* Allocate memory for MTD device structure and private data */ ++ gesbc_mtd = kmalloc(sizeof(struct mtd_info) + ++ sizeof(struct nand_chip), ++ GFP_KERNEL); ++ if (!gesbc_mtd) { ++ printk("Unable to allocate GESBC NAND MTD device structure.\n"); ++ return -ENOMEM; ++ } ++ ++ /* map physical adress */ ++ gesbc_fio_base = ioremap(gesbc_fio_pbase, SZ_1K); ++ if(!gesbc_fio_base) { ++ printk("ioremap GESBC-93xx NAND flash failed\n"); ++ kfree(gesbc_mtd); ++ return -EIO; ++ } ++ ++ ++ /* Get pointer to private data */ ++ this = (struct nand_chip *) (&gesbc_mtd[1]); ++ ++ /* Initialize structures */ ++ memset((char *) gesbc_mtd, 0, sizeof(struct mtd_info)); ++ memset((char *) this, 0, sizeof(struct nand_chip)); ++ ++ /* Link the private data with the MTD structure */ ++ gesbc_mtd->priv = this; ++ ++ /* Disbale interrupt to avoid race condition */ ++ local_irq_save(flags); ++ ++ /* ++ * Set GPIO Port A control register so that the pins are configured ++ * to be outputs for controlling the NAND flash. ++ */ ++ __raw_writel((__raw_readl(GPIO_PADDR) | 0x58) & ~0x80, GPIO_PADDR); ++ /* Clear NCE, clear CLE, clear ALE */ ++ __raw_writel( (__raw_readl(GPIO_PADR) | 0x08 ) & ~0x50, GPIO_PADR); ++ /* Set SRAM controller to 32 bit (8 bit just doesn't work, don't know why) bus width and 7 CLK wait state */ ++ __raw_writel(0x10003ce0, SMCBCR1); ++ local_irq_restore(flags); ++ ++ ++ /* insert callbacks */ ++ this->IO_ADDR_R = (void *) gesbc_fio_base; ++ this->IO_ADDR_W = (void *) gesbc_fio_base; ++ this->cmd_ctrl = (void *) gesbc_hwcontrol; ++ this->dev_ready = gesbc_device_ready; ++ this->chip_delay = 25; ++ this->ecc.mode = NAND_ECC_SOFT; ++ ++ __raw_writel(0xffffffff, gesbc_fio_base); ++ printk("Searching for NAND flash...\n"); ++ /* Scan to find existence of the device */ ++ if (nand_scan (gesbc_mtd, 1)) { ++ iounmap((void *)gesbc_fio_base); ++ kfree (gesbc_mtd); ++ return -ENXIO; ++ } ++ ++#ifdef CONFIG_MTD_CMDLINE_PARTS ++ gesbc_mtd->name="GESBC-NAND"; ++ mtd_parts_nb = parse_mtd_partitions(gesbc_mtd, 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_nb = NUM_PARTITIONS; ++ mtd_parts = partition_info32; ++ if (gesbc_mtd->size >= (128 * 0x100000)) ++ mtd_parts = partition_info128; ++ if (gesbc_mtd->size >= (256 * 0x100000)) ++ mtd_parts = partition_info256; ++ if (gesbc_mtd->size >= (512 * 0x100000)) ++ mtd_parts = partition_info512; ++ part_type = "static"; ++ } ++ ++ /* Register the partitions */ ++ printk(KERN_NOTICE "Using %s partition definition\n", part_type); ++ add_mtd_partitions(gesbc_mtd, mtd_parts, mtd_parts_nb); ++ ++ /* Return happy */ ++ return 0; ++} ++module_init(gesbc_nand_init); ++ ++/* ++ * Clean up routine ++ */ ++static void __exit gesbc_nand_cleanup (void) ++{ ++/* struct nand_chip *this = (struct nand_chip *) &gesbc_mtd[1]; */ ++ ++ /* Unregister the device */ ++ del_mtd_device (gesbc_mtd); ++ ++ /* Free the MTD device structure */ ++ kfree (gesbc_mtd); ++} ++module_exit(gesbc_nand_cleanup); ++ ++MODULE_LICENSE("GPL"); ++MODULE_AUTHOR("zql@glomationinc.com"); ++MODULE_DESCRIPTION("MTD map driver for Glomation GESBC-93xx board"); ++ +-- +1.5.2.5 + |