diff options
Diffstat (limited to 'drivers/mtd/maps')
| -rw-r--r-- | drivers/mtd/maps/Kconfig | 33 | ||||
| -rw-r--r-- | drivers/mtd/maps/Makefile | 2 | ||||
| -rw-r--r-- | drivers/mtd/maps/pmcmsp-flash.c | 184 | ||||
| -rw-r--r-- | drivers/mtd/maps/pmcmsp-ramroot.c | 105 |
4 files changed, 324 insertions, 0 deletions
diff --git a/drivers/mtd/maps/Kconfig b/drivers/mtd/maps/Kconfig index bbf0553bdb2..5e651721ddb 100644 --- a/drivers/mtd/maps/Kconfig +++ b/drivers/mtd/maps/Kconfig @@ -69,6 +69,39 @@ config MTD_PHYSMAP_OF physically into the CPU's memory. The mapping description here is taken from OF device tree. +config MTD_PMC_MSP_EVM + tristate "CFI Flash device mapped on PMC-Sierra MSP" + depends on PMC_MSP && MTD_CFI + select MTD_PARTITIONS + help + This provides a 'mapping' driver which support the way + in which user-programmable flash chips are connected on the + PMC-Sierra MSP eval/demo boards + +choice + prompt "Maximum mappable memory avialable for flash IO" + depends on MTD_PMC_MSP_EVM + default MSP_FLASH_MAP_LIMIT_32M + +config MSP_FLASH_MAP_LIMIT_32M + bool "32M" + +endchoice + +config MSP_FLASH_MAP_LIMIT + hex + default "0x02000000" + depends on MSP_FLASH_MAP_LIMIT_32M + +config MTD_PMC_MSP_RAMROOT + tristate "Embedded RAM block device for root on PMC-Sierra MSP" + depends on PMC_MSP_EMBEDDED_ROOTFS && \ + (MTD_BLOCK || MTD_BLOCK_RO) && \ + MTD_RAM + help + This provides support for the embedded root file system + on PMC MSP devices. This memory is mapped as a MTD block device. + config MTD_SUN_UFLASH tristate "Sun Microsystems userflash support" depends on SPARC && MTD_CFI diff --git a/drivers/mtd/maps/Makefile b/drivers/mtd/maps/Makefile index 071d0bf922b..de036c5e613 100644 --- a/drivers/mtd/maps/Makefile +++ b/drivers/mtd/maps/Makefile @@ -27,6 +27,8 @@ obj-$(CONFIG_MTD_CEIVA) += ceiva.o obj-$(CONFIG_MTD_OCTAGON) += octagon-5066.o obj-$(CONFIG_MTD_PHYSMAP) += physmap.o obj-$(CONFIG_MTD_PHYSMAP_OF) += physmap_of.o +obj-$(CONFIG_MTD_PMC_MSP_EVM) += pmcmsp-flash.o +obj-$(CONFIG_MTD_PMC_MSP_RAMROOT)+= pmcmsp-ramroot.o obj-$(CONFIG_MTD_PNC2000) += pnc2000.o obj-$(CONFIG_MTD_PCMCIA) += pcmciamtd.o obj-$(CONFIG_MTD_RPXLITE) += rpxlite.o diff --git a/drivers/mtd/maps/pmcmsp-flash.c b/drivers/mtd/maps/pmcmsp-flash.c new file mode 100644 index 00000000000..7e0377ec1c4 --- /dev/null +++ b/drivers/mtd/maps/pmcmsp-flash.c @@ -0,0 +1,184 @@ +/* + * Mapping of a custom board with both AMD CFI and JEDEC flash in partitions. + * Config with both CFI and JEDEC device support. + * + * Basically physmap.c with the addition of partitions and + * an array of mapping info to accomodate more than one flash type per board. + * + * Copyright 2005-2007 PMC-Sierra, Inc. + * + * 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. + */ + +#include <linux/module.h> +#include <linux/types.h> +#include <linux/kernel.h> +#include <linux/mtd/mtd.h> +#include <linux/mtd/map.h> +#include <linux/mtd/partitions.h> + +#include <asm/io.h> + +#include <msp_prom.h> +#include <msp_regs.h> + + +static struct mtd_info **msp_flash; +static struct mtd_partition **msp_parts; +static struct map_info *msp_maps; +static int fcnt; + +#define DEBUG_MARKER printk(KERN_NOTICE "%s[%d]\n",__FUNCTION__,__LINE__) + +int __init init_msp_flash(void) +{ + int i, j; + int offset, coff; + char *env; + int pcnt; + char flash_name[] = "flash0"; + char part_name[] = "flash0_0"; + unsigned addr, size; + + /* If ELB is disabled by "ful-mux" mode, we can't get at flash */ + if ((*DEV_ID_REG & DEV_ID_SINGLE_PC) && + (*ELB_1PC_EN_REG & SINGLE_PCCARD)) { + printk(KERN_NOTICE "Single PC Card mode: no flash access\n"); + return -ENXIO; + } + + /* examine the prom environment for flash devices */ + for (fcnt = 0; (env = prom_getenv(flash_name)); fcnt++) + flash_name[5] = '0' + fcnt + 1; + + if (fcnt < 1) + return -ENXIO; + + printk(KERN_NOTICE "Found %d PMC flash devices\n", fcnt); + msp_flash = (struct mtd_info **)kmalloc( + fcnt * sizeof(struct map_info *), GFP_KERNEL); + msp_parts = (struct mtd_partition **)kmalloc( + fcnt * sizeof(struct mtd_partition *), GFP_KERNEL); + msp_maps = (struct map_info *)kmalloc( + fcnt * sizeof(struct mtd_info), GFP_KERNEL); + memset(msp_maps, 0, fcnt * sizeof(struct mtd_info)); + + /* loop over the flash devices, initializing each */ + for (i = 0; i < fcnt; i++) { + /* examine the prom environment for flash partititions */ + part_name[5] = '0' + i; + part_name[7] = '0'; + for (pcnt = 0; (env = prom_getenv(part_name)); pcnt++) + part_name[7] = '0' + pcnt + 1; + + if (pcnt == 0) { + printk(KERN_NOTICE "Skipping flash device %d " + "(no partitions defined)\n", i); + continue; + } + + msp_parts[i] = (struct mtd_partition *)kmalloc( + pcnt * sizeof(struct mtd_partition), GFP_KERNEL); + memset(msp_parts[i], 0, pcnt * sizeof(struct mtd_partition)); + + /* now initialize the devices proper */ + flash_name[5] = '0' + i; + env = prom_getenv(flash_name); + + if (sscanf(env, "%x:%x", &addr, &size) < 2) + return -ENXIO; + addr = CPHYSADDR(addr); + + printk(KERN_NOTICE + "MSP flash device \"%s\": 0x%08x at 0x%08x\n", + flash_name, size, addr); + /* This must matchs the actual size of the flash chip */ + msp_maps[i].size = size; + msp_maps[i].phys = addr; + + /* + * Platforms have a specific limit of the size of memory + * which may be mapped for flash: + */ + if (size > CONFIG_MSP_FLASH_MAP_LIMIT) + size = CONFIG_MSP_FLASH_MAP_LIMIT; + msp_maps[i].virt = ioremap(addr, size); + msp_maps[i].bankwidth = 1; + msp_maps[i].name = strncpy(kmalloc(7, GFP_KERNEL), + flash_name, 7); + + if (msp_maps[i].virt == NULL) + return -ENXIO; + + for (j = 0; j < pcnt; j++) { + part_name[5] = '0' + i; + part_name[7] = '0' + j; + + env = prom_getenv(part_name); + + if (sscanf(env, "%x:%x:%n", &offset, &size, &coff) < 2) + return -ENXIO; + + msp_parts[i][j].size = size; + msp_parts[i][j].offset = offset; + msp_parts[i][j].name = env + coff; + } + + /* now probe and add the device */ + simple_map_init(&msp_maps[i]); + msp_flash[i] = do_map_probe("cfi_probe", &msp_maps[i]); + if (msp_flash[i]) { + msp_flash[i]->owner = THIS_MODULE; + add_mtd_partitions(msp_flash[i], msp_parts[i], pcnt); + } else { + printk(KERN_ERR "map probe failed for flash\n"); + return -ENXIO; + } + } + + return 0; +} + +static void __exit cleanup_msp_flash(void) +{ + int i; + + for (i = 0; i < sizeof(msp_flash) / sizeof(struct mtd_info **); i++) { + del_mtd_partitions(msp_flash[i]); + map_destroy(msp_flash[i]); + iounmap((void *)msp_maps[i].virt); + + /* free the memory */ + kfree(msp_maps[i].name); + kfree(msp_parts[i]); + } + + kfree(msp_flash); + kfree(msp_parts); + kfree(msp_maps); +} + +MODULE_AUTHOR("PMC-Sierra, Inc"); +MODULE_DESCRIPTION("MTD map driver for PMC-Sierra MSP boards"); +MODULE_LICENSE("GPL"); + +module_init(init_msp_flash); +module_exit(cleanup_msp_flash); diff --git a/drivers/mtd/maps/pmcmsp-ramroot.c b/drivers/mtd/maps/pmcmsp-ramroot.c new file mode 100644 index 00000000000..18049bceba8 --- /dev/null +++ b/drivers/mtd/maps/pmcmsp-ramroot.c @@ -0,0 +1,105 @@ +/* + * Mapping of the rootfs in a physical region of memory + * + * Copyright (C) 2005-2007 PMC-Sierra Inc. + * Author: Andrew Hughes, Andrew_Hughes@pmc-sierra.com + * + * 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. + */ + +#include <linux/module.h> +#include <linux/types.h> +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/slab.h> +#include <linux/fs.h> +#include <linux/root_dev.h> +#include <linux/mtd/mtd.h> +#include <linux/mtd/map.h> + +#include <asm/io.h> + +#include <msp_prom.h> + +static struct mtd_info *rr_mtd; + +struct map_info rr_map = { + .name = "ramroot", + .bankwidth = 4, +}; + +static int __init init_rrmap(void) +{ + void *ramroot_start; + unsigned long ramroot_size; + + /* Check for supported rootfs types */ + if (get_ramroot(&ramroot_start, &ramroot_size)) { + rr_map.phys = CPHYSADDR(ramroot_start); + rr_map.size = ramroot_size; + + printk(KERN_NOTICE + "PMC embedded root device: 0x%08lx @ 0x%08lx\n", + rr_map.size, (unsigned long)rr_map.phys); + } else { + printk(KERN_ERR + "init_rrmap: no supported embedded rootfs detected!\n"); + return -ENXIO; + } + + /* Map rootfs to I/O space for block device driver */ + rr_map.virt = ioremap(rr_map.phys, rr_map.size); + if (!rr_map.virt) { + printk(KERN_ERR "Failed to ioremap\n"); + return -EIO; + } + + simple_map_init(&rr_map); + + rr_mtd = do_map_probe("map_ram", &rr_map); + if (rr_mtd) { + rr_mtd->owner = THIS_MODULE; + + add_mtd_device(rr_mtd); + ROOT_DEV = MKDEV(MTD_BLOCK_MAJOR, rr_mtd->index); + + return 0; + } + + iounmap(rr_map.virt); + return -ENXIO; +} + +static void __exit cleanup_rrmap(void) +{ + del_mtd_device(rr_mtd); + map_destroy(rr_mtd); + + iounmap(rr_map.virt); + rr_map.virt = NULL; +} + +MODULE_AUTHOR("PMC-Sierra, Inc"); +MODULE_DESCRIPTION("MTD map driver for embedded PMC-Sierra MSP filesystem"); +MODULE_LICENSE("GPL"); + +module_init(init_rrmap); +module_exit(cleanup_rrmap); |