diff options
Diffstat (limited to 'drivers/mtd/maps/fortunet.c')
| -rw-r--r-- | drivers/mtd/maps/fortunet.c | 271 |
1 files changed, 271 insertions, 0 deletions
diff --git a/drivers/mtd/maps/fortunet.c b/drivers/mtd/maps/fortunet.c new file mode 100644 index 000000000000..068bb6a54520 --- /dev/null +++ b/drivers/mtd/maps/fortunet.c @@ -0,0 +1,271 @@ +/* fortunet.c memory map + * + * $Id: fortunet.c,v 1.9 2004/11/04 13:24:14 gleixner Exp $ + */ + +#include <linux/module.h> +#include <linux/types.h> +#include <linux/kernel.h> +#include <linux/init.h> +#include <asm/io.h> +#include <linux/mtd/mtd.h> +#include <linux/mtd/map.h> +#include <linux/mtd/partitions.h> + +#define MAX_NUM_REGIONS 4 +#define MAX_NUM_PARTITIONS 8 + +#define DEF_WINDOW_ADDR_PHY 0x00000000 +#define DEF_WINDOW_SIZE 0x00800000 // 8 Mega Bytes + +#define MTD_FORTUNET_PK "MTD FortuNet: " + +#define MAX_NAME_SIZE 128 + +struct map_region +{ + int window_addr_physical; + int altbankwidth; + struct map_info map_info; + struct mtd_info *mymtd; + struct mtd_partition parts[MAX_NUM_PARTITIONS]; + char map_name[MAX_NAME_SIZE]; + char parts_name[MAX_NUM_PARTITIONS][MAX_NAME_SIZE]; +}; + +static struct map_region map_regions[MAX_NUM_REGIONS]; +static int map_regions_set[MAX_NUM_REGIONS] = {0,0,0,0}; +static int map_regions_parts[MAX_NUM_REGIONS] = {0,0,0,0}; + + + +struct map_info default_map = { + .size = DEF_WINDOW_SIZE, + .bankwidth = 4, +}; + +static char * __init get_string_option(char *dest,int dest_size,char *sor) +{ + if(!dest_size) + return sor; + dest_size--; + while(*sor) + { + if(*sor==',') + { + sor++; + break; + } + else if(*sor=='\"') + { + sor++; + while(*sor) + { + if(*sor=='\"') + { + sor++; + break; + } + *dest = *sor; + dest++; + sor++; + dest_size--; + if(!dest_size) + { + *dest = 0; + return sor; + } + } + } + else + { + *dest = *sor; + dest++; + sor++; + dest_size--; + if(!dest_size) + { + *dest = 0; + return sor; + } + } + } + *dest = 0; + return sor; +} + +static int __init MTD_New_Region(char *line) +{ + char string[MAX_NAME_SIZE]; + int params[6]; + get_options (get_string_option(string,sizeof(string),line),6,params); + if(params[0]<1) + { + printk(MTD_FORTUNET_PK "Bad parameters for MTD Region " + " name,region-number[,base,size,bankwidth,altbankwidth]\n"); + return 1; + } + if((params[1]<0)||(params[1]>=MAX_NUM_REGIONS)) + { + printk(MTD_FORTUNET_PK "Bad region index of %d only have 0..%u regions\n", + params[1],MAX_NUM_REGIONS-1); + return 1; + } + memset(&map_regions[params[1]],0,sizeof(map_regions[params[1]])); + memcpy(&map_regions[params[1]].map_info, + &default_map,sizeof(map_regions[params[1]].map_info)); + map_regions_set[params[1]] = 1; + map_regions[params[1]].window_addr_physical = DEF_WINDOW_ADDR_PHY; + map_regions[params[1]].altbankwidth = 2; + map_regions[params[1]].mymtd = NULL; + map_regions[params[1]].map_info.name = map_regions[params[1]].map_name; + strcpy(map_regions[params[1]].map_info.name,string); + if(params[0]>1) + { + map_regions[params[1]].window_addr_physical = params[2]; + } + if(params[0]>2) + { + map_regions[params[1]].map_info.size = params[3]; + } + if(params[0]>3) + { + map_regions[params[1]].map_info.bankwidth = params[4]; + } + if(params[0]>4) + { + map_regions[params[1]].altbankwidth = params[5]; + } + return 1; +} + +static int __init MTD_New_Partition(char *line) +{ + char string[MAX_NAME_SIZE]; + int params[4]; + get_options (get_string_option(string,sizeof(string),line),4,params); + if(params[0]<3) + { + printk(MTD_FORTUNET_PK "Bad parameters for MTD Partition " + " name,region-number,size,offset\n"); + return 1; + } + if((params[1]<0)||(params[1]>=MAX_NUM_REGIONS)) + { + printk(MTD_FORTUNET_PK "Bad region index of %d only have 0..%u regions\n", + params[1],MAX_NUM_REGIONS-1); + return 1; + } + if(map_regions_parts[params[1]]>=MAX_NUM_PARTITIONS) + { + printk(MTD_FORTUNET_PK "Out of space for partition in this region\n"); + return 1; + } + map_regions[params[1]].parts[map_regions_parts[params[1]]].name = + map_regions[params[1]]. parts_name[map_regions_parts[params[1]]]; + strcpy(map_regions[params[1]].parts[map_regions_parts[params[1]]].name,string); + map_regions[params[1]].parts[map_regions_parts[params[1]]].size = + params[2]; + map_regions[params[1]].parts[map_regions_parts[params[1]]].offset = + params[3]; + map_regions[params[1]].parts[map_regions_parts[params[1]]].mask_flags = 0; + map_regions_parts[params[1]]++; + return 1; +} + +__setup("MTD_Region=", MTD_New_Region); +__setup("MTD_Partition=", MTD_New_Partition); + +/* Backwards-spelling-compatibility */ +__setup("MTD_Partion=", MTD_New_Partition); + +int __init init_fortunet(void) +{ + int ix,iy; + for(iy=ix=0;ix<MAX_NUM_REGIONS;ix++) + { + if(map_regions_parts[ix]&&(!map_regions_set[ix])) + { + printk(MTD_FORTUNET_PK "Region %d is not setup (Setting to default)\n", + ix); + memset(&map_regions[ix],0,sizeof(map_regions[ix])); + memcpy(&map_regions[ix].map_info,&default_map, + sizeof(map_regions[ix].map_info)); + map_regions_set[ix] = 1; + map_regions[ix].window_addr_physical = DEF_WINDOW_ADDR_PHY; + map_regions[ix].altbankwidth = 2; + map_regions[ix].mymtd = NULL; + map_regions[ix].map_info.name = map_regions[ix].map_name; + strcpy(map_regions[ix].map_info.name,"FORTUNET"); + } + if(map_regions_set[ix]) + { + iy++; + printk(KERN_NOTICE MTD_FORTUNET_PK "%s flash device at physically " + " address %x size %x\n", + map_regions[ix].map_info.name, + map_regions[ix].window_addr_physical, + map_regions[ix].map_info.size); + + map_regions[ix].map_info.phys = map_regions[ix].window_addr_physical, + + map_regions[ix].map_info.virt = + ioremap_nocache( + map_regions[ix].window_addr_physical, + map_regions[ix].map_info.size); + if(!map_regions[ix].map_info.virt) + { + printk(MTD_FORTUNET_PK "%s flash failed to ioremap!\n", + map_regions[ix].map_info.name); + return -ENXIO; + } + simple_map_init(&map_regions[ix].map_info); + + printk(KERN_NOTICE MTD_FORTUNET_PK "%s flash is virtually at: %x\n", + map_regions[ix].map_info.name, + map_regions[ix].map_info.virt); + map_regions[ix].mymtd = do_map_probe("cfi_probe", + &map_regions[ix].map_info); + if((!map_regions[ix].mymtd)&&( + map_regions[ix].altbankwidth!=map_regions[ix].map_info.bankwidth)) + { + printk(KERN_NOTICE MTD_FORTUNET_PK "Trying alternate bankwidth " + "for %s flash.\n", + map_regions[ix].map_info.name); + map_regions[ix].map_info.bankwidth = + map_regions[ix].altbankwidth; + map_regions[ix].mymtd = do_map_probe("cfi_probe", + &map_regions[ix].map_info); + } + map_regions[ix].mymtd->owner = THIS_MODULE; + add_mtd_partitions(map_regions[ix].mymtd, + map_regions[ix].parts,map_regions_parts[ix]); + } + } + if(iy) + return 0; + return -ENXIO; +} + +static void __exit cleanup_fortunet(void) +{ + int ix; + for(ix=0;ix<MAX_NUM_REGIONS;ix++) + { + if(map_regions_set[ix]) + { + if( map_regions[ix].mymtd ) + { + del_mtd_partitions( map_regions[ix].mymtd ); + map_destroy( map_regions[ix].mymtd ); + } + iounmap((void *)map_regions[ix].map_info.virt); + } + } +} + +module_init(init_fortunet); +module_exit(cleanup_fortunet); + +MODULE_AUTHOR("FortuNet, Inc."); +MODULE_DESCRIPTION("MTD map driver for FortuNet boards"); |