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Diffstat (limited to 'drivers/mtd/maps/cstm_mips_ixx.c')
-rw-r--r--drivers/mtd/maps/cstm_mips_ixx.c270
1 files changed, 270 insertions, 0 deletions
diff --git a/drivers/mtd/maps/cstm_mips_ixx.c b/drivers/mtd/maps/cstm_mips_ixx.c
new file mode 100644
index 000000000000..ae9252fbf176
--- /dev/null
+++ b/drivers/mtd/maps/cstm_mips_ixx.c
@@ -0,0 +1,270 @@
+/*
+ * $Id: cstm_mips_ixx.c,v 1.12 2004/11/04 13:24:14 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/config.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) {
+ printk(KERN_WARNING "Failed to ioremap\n");
+ 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
+ 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");