diff options
Diffstat (limited to 'target/linux/brcm47xx/patches-3.2/0018-mtd-bcm47xx-add-parallel-flash-driver.patch')
| -rw-r--r-- | target/linux/brcm47xx/patches-3.2/0018-mtd-bcm47xx-add-parallel-flash-driver.patch | 230 |
1 files changed, 230 insertions, 0 deletions
diff --git a/target/linux/brcm47xx/patches-3.2/0018-mtd-bcm47xx-add-parallel-flash-driver.patch b/target/linux/brcm47xx/patches-3.2/0018-mtd-bcm47xx-add-parallel-flash-driver.patch new file mode 100644 index 0000000000..613dc8914c --- /dev/null +++ b/target/linux/brcm47xx/patches-3.2/0018-mtd-bcm47xx-add-parallel-flash-driver.patch @@ -0,0 +1,230 @@ +From 36f8b899174a445a98fe02ed8d1db177525f0c52 Mon Sep 17 00:00:00 2001 +From: Hauke Mehrtens <hauke@hauke-m.de> +Date: Sun, 17 Jul 2011 14:55:18 +0200 +Subject: [PATCH 07/15] mtd: bcm47xx: add parallel flash driver + + +Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de> +--- + drivers/mtd/maps/Kconfig | 9 ++ + drivers/mtd/maps/Makefile | 1 + + drivers/mtd/maps/bcm47xx-pflash.c | 188 +++++++++++++++++++++++++++++++++++++ + 3 files changed, 198 insertions(+), 0 deletions(-) + create mode 100644 drivers/mtd/maps/bcm47xx-pflash.c + +--- a/drivers/mtd/maps/Kconfig ++++ b/drivers/mtd/maps/Kconfig +@@ -257,6 +257,15 @@ config MTD_LANTIQ + help + Support for NOR flash attached to the Lantiq SoC's External Bus Unit. + ++config MTD_BCM47XX_PFLASH ++ tristate "bcm47xx parallel flash support" ++ default y ++ depends on BCM47XX ++ select MTD_PARTITIONS ++ select MTD_BCM47XX_PARTS ++ help ++ Support for bcm47xx parallel flash ++ + config MTD_DILNETPC + tristate "CFI Flash device mapped on DIL/Net PC" + depends on X86 && MTD_CFI_INTELEXT && BROKEN +--- a/drivers/mtd/maps/Makefile ++++ b/drivers/mtd/maps/Makefile +@@ -58,3 +58,4 @@ obj-$(CONFIG_MTD_GPIO_ADDR) += gpio-addr + obj-$(CONFIG_MTD_BCM963XX) += bcm963xx-flash.o + obj-$(CONFIG_MTD_LATCH_ADDR) += latch-addr-flash.o + obj-$(CONFIG_MTD_LANTIQ) += lantiq-flash.o ++obj-$(CONFIG_MTD_BCM47XX_PFLASH)+= bcm47xx-pflash.o +--- /dev/null ++++ b/drivers/mtd/maps/bcm47xx-pflash.c +@@ -0,0 +1,188 @@ ++/* ++ * Copyright (C) 2006 Felix Fietkau <nbd@openwrt.org> ++ * Copyright (C) 2005 Waldemar Brodkorb <wbx@openwrt.org> ++ * Copyright (C) 2004 Florian Schirmer (jolt@tuxbox.org) ++ * ++ * original functions for finding root filesystem from Mike Baker ++ * ++ * This program is free software; you can redistribute it and/or modify it ++ * under the terms of the GNU General Public License as published by the ++ * Free Software Foundation; either version 2 of the License, or (at your ++ * option) any later version. ++ * ++ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED ++ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF ++ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN ++ * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, ++ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT ++ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF ++ * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ++ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT ++ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF ++ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. ++ * ++ * You should have received a copy of the GNU General Public License along ++ * with this program; if not, write to the Free Software Foundation, Inc., ++ * 675 Mass Ave, Cambridge, MA 02139, USA. ++ * ++ * Copyright 2001-2003, Broadcom Corporation ++ * All Rights Reserved. ++ * ++ * THIS SOFTWARE IS OFFERED "AS IS", AND BROADCOM GRANTS NO WARRANTIES OF ANY ++ * KIND, EXPRESS OR IMPLIED, BY STATUTE, COMMUNICATION OR OTHERWISE. BROADCOM ++ * SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS ++ * FOR A SPECIFIC PURPOSE OR NONINFRINGEMENT CONCERNING THIS SOFTWARE. ++ * ++ * Flash mapping for BCM947XX boards ++ */ ++ ++#define pr_fmt(fmt) "bcm47xx_pflash: " fmt ++#include <linux/init.h> ++#include <linux/module.h> ++#include <linux/types.h> ++#include <linux/kernel.h> ++#include <linux/sched.h> ++#include <linux/mtd/mtd.h> ++#include <linux/mtd/map.h> ++#include <linux/mtd/partitions.h> ++#include <linux/io.h> ++#include <asm/mach-bcm47xx/bcm47xx.h> ++#include <linux/platform_device.h> ++ ++#define WINDOW_ADDR 0x1fc00000 ++#define WINDOW_SIZE 0x400000 ++#define BUSWIDTH 2 ++ ++static struct mtd_info *bcm47xx_mtd; ++ ++static void bcm47xx_map_copy_from(struct map_info *map, void *to, unsigned long from, ssize_t len) ++{ ++ if (len == 1) { ++ memcpy_fromio(to, map->virt + from, len); ++ } else { ++ int i; ++ u16 *dest = (u16 *) to; ++ u16 *src = (u16 *) (map->virt + from); ++ for (i = 0; i < (len / 2); i++) ++ dest[i] = src[i]; ++ if (len & 1) ++ *((u8 *)dest+len-1) = src[i] & 0xff; ++ } ++} ++ ++static struct map_info bcm47xx_map = { ++ name: "Physically mapped flash", ++ size : WINDOW_SIZE, ++ bankwidth : BUSWIDTH, ++ phys : WINDOW_ADDR, ++}; ++ ++static const char *probes[] = { "bcm47xx", NULL }; ++ ++static int bcm47xx_mtd_probe(struct platform_device *pdev) ++{ ++#ifdef CONFIG_BCM47XX_SSB ++ struct ssb_chipcommon *ssb_cc; ++#endif ++#ifdef CONFIG_BCM47XX_BCMA ++ struct bcma_drv_cc *bcma_cc; ++#endif ++ int ret = 0; ++ ++ switch (bcm47xx_bus_type) { ++#ifdef CONFIG_BCM47XX_SSB ++ case BCM47XX_BUS_TYPE_SSB: ++ ssb_cc = &bcm47xx_bus.ssb.chipco; ++ if (ssb_cc->flash_type != SSB_PFLASH) ++ return -ENODEV; ++ ++ bcm47xx_map.phys = ssb_cc->pflash.window; ++ bcm47xx_map.size = ssb_cc->pflash.window_size; ++ bcm47xx_map.bankwidth = ssb_cc->pflash.buswidth; ++ break; ++#endif ++#ifdef CONFIG_BCM47XX_BCMA ++ case BCM47XX_BUS_TYPE_BCMA: ++ bcma_cc = &bcm47xx_bus.bcma.bus.drv_cc; ++ if (bcma_cc->flash_type != BCMA_PFLASH) ++ return -ENODEV; ++ ++ bcm47xx_map.phys = bcma_cc->pflash.window; ++ bcm47xx_map.size = bcma_cc->pflash.window_size; ++ bcm47xx_map.bankwidth = bcma_cc->pflash.buswidth; ++ break; ++#endif ++ } ++ ++ pr_notice("flash init: 0x%08x 0x%08lx\n", bcm47xx_map.phys, bcm47xx_map.size); ++ bcm47xx_map.virt = ioremap_nocache(bcm47xx_map.phys, bcm47xx_map.size); ++ ++ if (!bcm47xx_map.virt) { ++ pr_err("Failed to ioremap\n"); ++ return -EIO; ++ } ++ ++ simple_map_init(&bcm47xx_map); ++ /* override copy_from routine */ ++ bcm47xx_map.copy_from = bcm47xx_map_copy_from; ++ ++ bcm47xx_mtd = do_map_probe("cfi_probe", &bcm47xx_map); ++ if (!bcm47xx_mtd) { ++ pr_err("Failed to do_map_probe\n"); ++ ret = -ENXIO; ++ goto err_unmap; ++ } ++ bcm47xx_mtd->owner = THIS_MODULE; ++ ++ pr_notice("Flash device: 0x%lx at 0x%x\n", bcm47xx_map.size, WINDOW_ADDR); ++ ++ ret = mtd_device_parse_register(bcm47xx_mtd, probes, NULL, NULL, 0); ++ ++ if (ret) { ++ pr_err("Flash: mtd_device_register failed\n"); ++ goto err_destroy; ++ } ++ return 0; ++ ++err_destroy: ++ map_destroy(bcm47xx_mtd); ++err_unmap: ++ iounmap(bcm47xx_map.virt); ++ return ret; ++} ++ ++static int __devexit bcm47xx_mtd_remove(struct platform_device *pdev) ++{ ++ mtd_device_unregister(bcm47xx_mtd); ++ map_destroy(bcm47xx_mtd); ++ iounmap(bcm47xx_map.virt); ++ return 0; ++} ++ ++static struct platform_driver bcm47xx_mtd_driver = { ++ .remove = __devexit_p(bcm47xx_mtd_remove), ++ .driver = { ++ .name = "bcm47xx_pflash", ++ .owner = THIS_MODULE, ++ }, ++}; ++ ++static int __init init_bcm47xx_mtd(void) ++{ ++ int ret = platform_driver_probe(&bcm47xx_mtd_driver, bcm47xx_mtd_probe); ++ ++ if (ret) ++ pr_err("error registering platform driver: %i\n", ret); ++ return ret; ++} ++ ++static void __exit exit_bcm47xx_mtd(void) ++{ ++ platform_driver_unregister(&bcm47xx_mtd_driver); ++} ++ ++module_init(init_bcm47xx_mtd); ++module_exit(exit_bcm47xx_mtd); ++ ++MODULE_LICENSE("GPL"); ++MODULE_DESCRIPTION("BCM47XX parallel flash driver"); |