/* * $Id: cstm_mips_ixx.c,v 1.14 2005/11/07 11:14:26 gleixner Exp $ * * 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 2000 MontaVista Software 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/init.h> #include <asm/io.h> #include <linux/mtd/mtd.h> #include <linux/mtd/map.h> #include <linux/mtd/partitions.h> #include <linux/delay.h> #if defined(CONFIG_MIPS_ITE8172) || defined(CONFIG_MIPS_IVR) #define CC_GCR 0xB4013818 #define CC_GPBCR 0xB401380A #define CC_GPBDR 0xB4013808 #define CC_M68K_DEVICE 1 #define CC_M68K_FUNCTION 6 #define CC_CONFADDR 0xB8004000 #define CC_CONFDATA 0xB8004004 #define CC_FC_FCR 0xB8002004 #define CC_FC_DCR 0xB8002008 #define CC_GPACR 0xB4013802 #define CC_GPAICR 0xB4013804 #endif /* defined(CONFIG_MIPS_ITE8172) || defined(CONFIG_MIPS_IVR) */ #if defined(CONFIG_MIPS_ITE8172) || defined(CONFIG_MIPS_IVR) void cstm_mips_ixx_set_vpp(struct map_info *map,int vpp) { static DEFINE_SPINLOCK(vpp_lock); static int vpp_count = 0; unsigned long flags; spin_lock_irqsave(&vpp_lock, flags); if (vpp) { if (!vpp_count++) { __u16 data; __u8 data1; static u8 first = 1; // Set GPIO port B pin3 to high data = *(__u16 *)(CC_GPBCR); data = (data & 0xff0f) | 0x0040; *(__u16 *)CC_GPBCR = data; *(__u8 *)CC_GPBDR = (*(__u8*)CC_GPBDR) | 0x08; if (first) { first = 0; /* need to have this delay for first enabling vpp after powerup */ udelay(40); } } } else { if (!--vpp_count) { __u16 data; // Set GPIO port B pin3 to high data = *(__u16 *)(CC_GPBCR); data = (data & 0xff3f) | 0x0040; *(__u16 *)CC_GPBCR = data; *(__u8 *)CC_GPBDR = (*(__u8*)CC_GPBDR) & 0xf7; } } spin_unlock_irqrestore(&vpp_lock, flags); } #endif /* board and partition description */ #define MAX_PHYSMAP_PARTITIONS 8 struct cstm_mips_ixx_info { char *name; unsigned long window_addr; unsigned long window_size; int bankwidth; int num_partitions; }; #if defined(CONFIG_MIPS_ITE8172) || defined(CONFIG_MIPS_IVR) #define PHYSMAP_NUMBER 1 // number of board desc structs needed, one per contiguous flash type const struct cstm_mips_ixx_info cstm_mips_ixx_board_desc[PHYSMAP_NUMBER] = { { // 28F128J3A in 2x16 configuration "big flash", // name 0x08000000, // window_addr 0x02000000, // window_size 4, // bankwidth 1, // num_partitions } }; static struct mtd_partition cstm_mips_ixx_partitions[PHYSMAP_NUMBER][MAX_PHYSMAP_PARTITIONS] = { { // 28F128J3A in 2x16 configuration { .name = "main partition ", .size = 0x02000000, // 128 x 2 x 128k byte sectors .offset = 0, }, }, }; #else /* defined(CONFIG_MIPS_ITE8172) || defined(CONFIG_MIPS_IVR) */ #define PHYSMAP_NUMBER 1 // number of board desc structs needed, one per contiguous flash type const struct cstm_mips_ixx_info cstm_mips_ixx_board_desc[PHYSMAP_NUMBER] = { { "MTD flash", // name CONFIG_MTD_CSTM_MIPS_IXX_START, // window_addr CONFIG_MTD_CSTM_MIPS_IXX_LEN, // window_size CONFIG_MTD_CSTM_MIPS_IXX_BUSWIDTH, // bankwidth 1, // num_partitions }, }; static struct mtd_partition cstm_mips_ixx_partitions[PHYSMAP_NUMBER][MAX_PHYSMAP_PARTITIONS] = { { { .name = "main partition", .size = CONFIG_MTD_CSTM_MIPS_IXX_LEN, .offset = 0, }, }, }; #endif /* defined(CONFIG_MIPS_ITE8172) || defined(CONFIG_MIPS_IVR) */ struct map_info cstm_mips_ixx_map[PHYSMAP_NUMBER]; int __init init_cstm_mips_ixx(void) { int i; int jedec; struct mtd_info *mymtd; struct mtd_partition *parts; /* Initialize mapping */ for (i=0;i<PHYSMAP_NUMBER;i++) { printk(KERN_NOTICE "cstm_mips_ixx flash device: 0x%lx at 0x%lx\n", cstm_mips_ixx_board_desc[i].window_size, cstm_mips_ixx_board_desc[i].window_addr); cstm_mips_ixx_map[i].phys = cstm_mips_ixx_board_desc[i].window_addr; cstm_mips_ixx_map[i].virt = ioremap(cstm_mips_ixx_board_desc[i].window_addr, cstm_mips_ixx_board_desc[i].window_size); if (!cstm_mips_ixx_map[i].virt) { int j = 0; printk(KERN_WARNING "Failed to ioremap\n"); for (j = 0; j < i; j++) { if (cstm_mips_ixx_map[j].virt) { iounmap(cstm_mips_ixx_map[j].virt); cstm_mips_ixx_map[j].virt = NULL; } } return -EIO; } cstm_mips_ixx_map[i].name = cstm_mips_ixx_board_desc[i].name; cstm_mips_ixx_map[i].size = cstm_mips_ixx_board_desc[i].window_size; cstm_mips_ixx_map[i].bankwidth = cstm_mips_ixx_board_desc[i].bankwidth; #if defined(CONFIG_MIPS_ITE8172) || defined(CONFIG_MIPS_IVR) cstm_mips_ixx_map[i].set_vpp = cstm_mips_ixx_set_vpp; #endif simple_map_init(&cstm_mips_ixx_map[i]); //printk(KERN_NOTICE "cstm_mips_ixx: ioremap is %x\n",(unsigned int)(cstm_mips_ixx_map[i].virt)); } #if defined(CONFIG_MIPS_ITE8172) || defined(CONFIG_MIPS_IVR) setup_ITE_IVR_flash(); #endif /* defined(CONFIG_MIPS_ITE8172) || defined(CONFIG_MIPS_IVR) */ for (i=0;i<PHYSMAP_NUMBER;i++) { parts = &cstm_mips_ixx_partitions[i][0]; jedec = 0; mymtd = (struct mtd_info *)do_map_probe("cfi_probe", &cstm_mips_ixx_map[i]); //printk(KERN_NOTICE "phymap %d cfi_probe: mymtd is %x\n",i,(unsigned int)mymtd); if (!mymtd) { jedec = 1; mymtd = (struct mtd_info *)do_map_probe("jedec", &cstm_mips_ixx_map[i]); printk(KERN_NOTICE "cstm_mips_ixx %d jedec: mymtd is %x\n",i,(unsigned int)mymtd); } if (mymtd) { mymtd->owner = THIS_MODULE; cstm_mips_ixx_map[i].map_priv_2 = (unsigned long)mymtd; add_mtd_partitions(mymtd, parts, cstm_mips_ixx_board_desc[i].num_partitions); } else { for (i = 0; i < PHYSMAP_NUMBER; i++) { if (cstm_mips_ixx_map[i].virt) { iounmap(cstm_mips_ixx_map[i].virt); cstm_mips_ixx_map[i].virt = NULL; } } return -ENXIO; } } return 0; } static void __exit cleanup_cstm_mips_ixx(void) { int i; struct mtd_info *mymtd; for (i=0;i<PHYSMAP_NUMBER;i++) { mymtd = (struct mtd_info *)cstm_mips_ixx_map[i].map_priv_2; if (mymtd) { del_mtd_partitions(mymtd); map_destroy(mymtd); } if (cstm_mips_ixx_map[i].virt) { iounmap((void *)cstm_mips_ixx_map[i].virt); cstm_mips_ixx_map[i].virt = 0; } } } #if defined(CONFIG_MIPS_ITE8172) || defined(CONFIG_MIPS_IVR) void PCISetULongByOffset(__u32 DevNumber, __u32 FuncNumber, __u32 Offset, __u32 data) { __u32 offset; offset = ( unsigned long )( 0x80000000 | ( DevNumber << 11 ) + ( FuncNumber << 8 ) + Offset) ; *(__u32 *)CC_CONFADDR = offset; *(__u32 *)CC_CONFDATA = data; } void setup_ITE_IVR_flash() { __u32 size, base; size = 0x0e000000; // 32MiB base = (0x08000000) >> 8 >>1; // Bug: we must shift one more bit /* need to set ITE flash to 32 bits instead of default 8 */ #ifdef CONFIG_MIPS_IVR *(__u32 *)CC_FC_FCR = 0x55; *(__u32 *)CC_GPACR = 0xfffc; #else *(__u32 *)CC_FC_FCR = 0x77; #endif /* turn bursting off */ *(__u32 *)CC_FC_DCR = 0x0; /* setup for one chip 4 byte PCI access */ PCISetULongByOffset(CC_M68K_DEVICE, CC_M68K_FUNCTION, 0x60, size | base); PCISetULongByOffset(CC_M68K_DEVICE, CC_M68K_FUNCTION, 0x64, 0x02); } #endif /* defined(CONFIG_MIPS_ITE8172) || defined(CONFIG_MIPS_IVR) */ module_init(init_cstm_mips_ixx); module_exit(cleanup_cstm_mips_ixx); MODULE_LICENSE("GPL"); MODULE_AUTHOR("Alice Hennessy <ahennessy@mvista.com>"); MODULE_DESCRIPTION("MTD map driver for ITE 8172G and Globespan IVR boards");