+++ /dev/null
-/*
- * Flash memory access on iPAQ Handhelds (either SA1100 or PXA250 based)
- *
- * (C) 2000 Nicolas Pitre <nico@fluxnic.net>
- * (C) 2002 Hewlett-Packard Company <jamey.hicks@hp.com>
- * (C) 2003 Christian Pellegrin <chri@ascensit.com>, <chri@infis.univ.ts.it>: concatenation of multiple flashes
- */
-
-#include <linux/module.h>
-#include <linux/types.h>
-#include <linux/kernel.h>
-#include <linux/spinlock.h>
-#include <linux/init.h>
-#include <linux/slab.h>
-#include <asm/page.h>
-#include <asm/mach-types.h>
-#include <asm/system.h>
-#include <asm/errno.h>
-
-#include <linux/mtd/mtd.h>
-#include <linux/mtd/map.h>
-#include <linux/mtd/partitions.h>
-#ifdef CONFIG_MTD_CONCAT
-#include <linux/mtd/concat.h>
-#endif
-
-#include <mach/hardware.h>
-#include <mach/h3600.h>
-#include <asm/io.h>
-
-
-#ifndef CONFIG_IPAQ_HANDHELD
-#error This is for iPAQ Handhelds only
-#endif
-#ifdef CONFIG_SA1100_JORNADA56X
-
-static void jornada56x_set_vpp(struct map_info *map, int vpp)
-{
- if (vpp)
- GPSR = GPIO_GPIO26;
- else
- GPCR = GPIO_GPIO26;
- GPDR |= GPIO_GPIO26;
-}
-
-#endif
-
-#ifdef CONFIG_SA1100_JORNADA720
-
-static void jornada720_set_vpp(struct map_info *map, int vpp)
-{
- if (vpp)
- PPSR |= 0x80;
- else
- PPSR &= ~0x80;
- PPDR |= 0x80;
-}
-
-#endif
-
-#define MAX_IPAQ_CS 2 /* Number of CS we are going to test */
-
-#define IPAQ_MAP_INIT(X) \
- { \
- name: "IPAQ flash " X, \
- }
-
-
-static struct map_info ipaq_map[MAX_IPAQ_CS] = {
- IPAQ_MAP_INIT("bank 1"),
- IPAQ_MAP_INIT("bank 2")
-};
-
-static struct mtd_info *my_sub_mtd[MAX_IPAQ_CS] = {
- NULL,
- NULL
-};
-
-/*
- * Here are partition information for all known IPAQ-based devices.
- * See include/linux/mtd/partitions.h for definition of the mtd_partition
- * structure.
- *
- * The *_max_flash_size is the maximum possible mapped flash size which
- * is not necessarily the actual flash size. It must be no more than
- * the value specified in the "struct map_desc *_io_desc" mapping
- * definition for the corresponding machine.
- *
- * Please keep these in alphabetical order, and formatted as per existing
- * entries. Thanks.
- */
-
-#ifdef CONFIG_IPAQ_HANDHELD
-static unsigned long h3xxx_max_flash_size = 0x04000000;
-static struct mtd_partition h3xxx_partitions[] = {
- {
- name: "H3XXX boot firmware",
-#ifndef CONFIG_LAB
- size: 0x00040000,
-#else
- size: 0x00080000,
-#endif
- offset: 0,
-#ifndef CONFIG_LAB
- mask_flags: MTD_WRITEABLE, /* force read-only */
-#endif
- },
- {
- name: "H3XXX root jffs2",
-#ifndef CONFIG_LAB
- size: 0x2000000 - 2*0x40000, /* Warning, this is fixed later */
- offset: 0x00040000,
-#else
- size: 0x2000000 - 0x40000 - 0x80000, /* Warning, this is fixed later */
- offset: 0x00080000,
-#endif
- },
- {
- name: "asset",
- size: 0x40000,
- offset: 0x2000000 - 0x40000, /* Warning, this is fixed later */
- mask_flags: MTD_WRITEABLE, /* force read-only */
- }
-};
-
-#ifndef CONFIG_MTD_CONCAT
-static struct mtd_partition h3xxx_partitions_bank2[] = {
- /* this is used only on 2 CS machines when concat is not present */
- {
- name: "second H3XXX root jffs2",
- size: 0x1000000 - 0x40000, /* Warning, this is fixed later */
- offset: 0x00000000,
- },
- {
- name: "second asset",
- size: 0x40000,
- offset: 0x1000000 - 0x40000, /* Warning, this is fixed later */
- mask_flags: MTD_WRITEABLE, /* force read-only */
- }
-};
-#endif
-
-static DEFINE_SPINLOCK(ipaq_vpp_lock);
-
-static void h3xxx_set_vpp(struct map_info *map, int vpp)
-{
- static int nest = 0;
-
- spin_lock(&ipaq_vpp_lock);
- if (vpp)
- nest++;
- else
- nest--;
- if (nest)
- assign_h3600_egpio(IPAQ_EGPIO_VPP_ON, 1);
- else
- assign_h3600_egpio(IPAQ_EGPIO_VPP_ON, 0);
- spin_unlock(&ipaq_vpp_lock);
-}
-
-#endif
-
-#if defined(CONFIG_SA1100_JORNADA56X) || defined(CONFIG_SA1100_JORNADA720)
-static unsigned long jornada_max_flash_size = 0x02000000;
-static struct mtd_partition jornada_partitions[] = {
- {
- name: "Jornada boot firmware",
- size: 0x00040000,
- offset: 0,
- mask_flags: MTD_WRITEABLE, /* force read-only */
- }, {
- name: "Jornada root jffs2",
- size: MTDPART_SIZ_FULL,
- offset: 0x00040000,
- }
-};
-#endif
-
-
-static struct mtd_partition *parsed_parts;
-static struct mtd_info *mymtd;
-
-static unsigned long cs_phys[] = {
-#ifdef CONFIG_ARCH_SA1100
- SA1100_CS0_PHYS,
- SA1100_CS1_PHYS,
- SA1100_CS2_PHYS,
- SA1100_CS3_PHYS,
- SA1100_CS4_PHYS,
- SA1100_CS5_PHYS,
-#else
- PXA_CS0_PHYS,
- PXA_CS1_PHYS,
- PXA_CS2_PHYS,
- PXA_CS3_PHYS,
- PXA_CS4_PHYS,
- PXA_CS5_PHYS,
-#endif
-};
-
-static const char *part_probes[] = { "cmdlinepart", "RedBoot", NULL };
-
-static int __init h1900_special_case(void);
-
-static int __init ipaq_mtd_init(void)
-{
- struct mtd_partition *parts = NULL;
- int nb_parts = 0;
- int parsed_nr_parts = 0;
- const char *part_type;
- int i; /* used when we have >1 flash chips */
- unsigned long tot_flashsize = 0; /* used when we have >1 flash chips */
-
- /* Default flash bankwidth */
- // ipaq_map.bankwidth = (MSC0 & MSC_RBW) ? 2 : 4;
-
- if (machine_is_h1900())
- {
- /* For our intents, the h1900 is not a real iPAQ, so we special-case it. */
- return h1900_special_case();
- }
-
- if (machine_is_h3100() || machine_is_h1900())
- for(i=0; i<MAX_IPAQ_CS; i++)
- ipaq_map[i].bankwidth = 2;
- else
- for(i=0; i<MAX_IPAQ_CS; i++)
- ipaq_map[i].bankwidth = 4;
-
- /*
- * Static partition definition selection
- */
- part_type = "static";
-
- simple_map_init(&ipaq_map[0]);
- simple_map_init(&ipaq_map[1]);
-
-#ifdef CONFIG_IPAQ_HANDHELD
- if (machine_is_ipaq()) {
- parts = h3xxx_partitions;
- nb_parts = ARRAY_SIZE(h3xxx_partitions);
- for(i=0; i<MAX_IPAQ_CS; i++) {
- ipaq_map[i].size = h3xxx_max_flash_size;
- ipaq_map[i].set_vpp = h3xxx_set_vpp;
- ipaq_map[i].phys = cs_phys[i];
- ipaq_map[i].virt = ioremap(cs_phys[i], 0x04000000);
- if (machine_is_h3100 () || machine_is_h1900())
- ipaq_map[i].bankwidth = 2;
- }
- if (machine_is_h3600()) {
- /* No asset partition here */
- h3xxx_partitions[1].size += 0x40000;
- nb_parts--;
- }
- }
-#endif
-#ifdef CONFIG_ARCH_H5400
- if (machine_is_h5400()) {
- ipaq_map[0].size = 0x02000000;
- ipaq_map[1].size = 0x02000000;
- ipaq_map[1].phys = 0x02000000;
- ipaq_map[1].virt = ipaq_map[0].virt + 0x02000000;
- }
-#endif
-#ifdef CONFIG_ARCH_H1900
- if (machine_is_h1900()) {
- ipaq_map[0].size = 0x00400000;
- ipaq_map[1].size = 0x02000000;
- ipaq_map[1].phys = 0x00080000;
- ipaq_map[1].virt = ipaq_map[0].virt + 0x00080000;
- }
-#endif
-
-#ifdef CONFIG_SA1100_JORNADA56X
- if (machine_is_jornada56x()) {
- parts = jornada_partitions;
- nb_parts = ARRAY_SIZE(jornada_partitions);
- ipaq_map[0].size = jornada_max_flash_size;
- ipaq_map[0].set_vpp = jornada56x_set_vpp;
- ipaq_map[0].virt = (__u32)ioremap(0x0, 0x04000000);
- }
-#endif
-#ifdef CONFIG_SA1100_JORNADA720
- if (machine_is_jornada720()) {
- parts = jornada_partitions;
- nb_parts = ARRAY_SIZE(jornada_partitions);
- ipaq_map[0].size = jornada_max_flash_size;
- ipaq_map[0].set_vpp = jornada720_set_vpp;
- }
-#endif
-
-
- if (machine_is_ipaq()) { /* for iPAQs only */
- for(i=0; i<MAX_IPAQ_CS; i++) {
- printk(KERN_NOTICE "iPAQ flash: probing %d-bit flash bus, window=%lx with CFI.\n", ipaq_map[i].bankwidth*8, ipaq_map[i].virt);
- my_sub_mtd[i] = do_map_probe("cfi_probe", &ipaq_map[i]);
- if (!my_sub_mtd[i]) {
- printk(KERN_NOTICE "iPAQ flash: probing %d-bit flash bus, window=%lx with JEDEC.\n", ipaq_map[i].bankwidth*8, ipaq_map[i].virt);
- my_sub_mtd[i] = do_map_probe("jedec_probe", &ipaq_map[i]);
- }
- if (!my_sub_mtd[i]) {
- printk(KERN_NOTICE "iPAQ flash: failed to find flash.\n");
- if (i)
- break;
- else
- return -ENXIO;
- } else
- printk(KERN_NOTICE "iPAQ flash: found %d bytes\n", my_sub_mtd[i]->size);
-
- /* do we really need this debugging? --joshua 20030703 */
- // printk("my_sub_mtd[%d]=%p\n", i, my_sub_mtd[i]);
- my_sub_mtd[i]->owner = THIS_MODULE;
- tot_flashsize += my_sub_mtd[i]->size;
- }
-#ifdef CONFIG_MTD_CONCAT
- /* fix the asset location */
-# ifdef CONFIG_LAB
- h3xxx_partitions[1].size = tot_flashsize - 0x40000 - 0x80000 /* extra big boot block */;
-# else
- h3xxx_partitions[1].size = tot_flashsize - 2 * 0x40000;
-# endif
- h3xxx_partitions[2].offset = tot_flashsize - 0x40000;
- /* and concat the devices */
- mymtd = mtd_concat_create(&my_sub_mtd[0], i,
- "ipaq");
- if (!mymtd) {
- printk("Cannot create iPAQ concat device\n");
- return -ENXIO;
- }
-#else
- mymtd = my_sub_mtd[0];
-
- /*
- *In the very near future, command line partition parsing
- * will use the device name as 'mtd-id' instead of a value
- * passed to the parse_cmdline_partitions() routine. Since
- * the bootldr says 'ipaq', make sure it continues to work.
- */
- mymtd->name = "ipaq";
-
- if ((machine_is_h3600())) {
-# ifdef CONFIG_LAB
- h3xxx_partitions[1].size = my_sub_mtd[0]->size - 0x80000;
-# else
- h3xxx_partitions[1].size = my_sub_mtd[0]->size - 0x40000;
-# endif
- nb_parts = 2;
- } else {
-# ifdef CONFIG_LAB
- h3xxx_partitions[1].size = my_sub_mtd[0]->size - 0x40000 - 0x80000; /* extra big boot block */
-# else
- h3xxx_partitions[1].size = my_sub_mtd[0]->size - 2*0x40000;
-# endif
- h3xxx_partitions[2].offset = my_sub_mtd[0]->size - 0x40000;
- }
-
- if (my_sub_mtd[1]) {
-# ifdef CONFIG_LAB
- h3xxx_partitions_bank2[0].size = my_sub_mtd[1]->size - 0x80000;
-# else
- h3xxx_partitions_bank2[0].size = my_sub_mtd[1]->size - 0x40000;
-# endif
- h3xxx_partitions_bank2[1].offset = my_sub_mtd[1]->size - 0x40000;
- }
-#endif
- }
- else {
- /*
- * Now let's probe for the actual flash. Do it here since
- * specific machine settings might have been set above.
- */
- printk(KERN_NOTICE "IPAQ flash: probing %d-bit flash bus, window=%lx\n", ipaq_map[0].bankwidth*8, ipaq_map[0].virt);
- mymtd = do_map_probe("cfi_probe", &ipaq_map[0]);
- if (!mymtd)
- return -ENXIO;
- mymtd->owner = THIS_MODULE;
- }
-
-
- /*
- * Dynamic partition selection stuff (might override the static ones)
- */
-
- i = parse_mtd_partitions(mymtd, part_probes, &parsed_parts, 0);
-
- if (i > 0) {
- nb_parts = parsed_nr_parts = i;
- parts = parsed_parts;
- part_type = "dynamic";
- }
-
- if (!parts) {
- printk(KERN_NOTICE "IPAQ flash: no partition info available, registering whole flash at once\n");
- add_mtd_device(mymtd);
-#ifndef CONFIG_MTD_CONCAT
- if (my_sub_mtd[1])
- add_mtd_device(my_sub_mtd[1]);
-#endif
- } else {
- printk(KERN_NOTICE "Using %s partition definition\n", part_type);
- add_mtd_partitions(mymtd, parts, nb_parts);
-#ifndef CONFIG_MTD_CONCAT
- if (my_sub_mtd[1])
- add_mtd_partitions(my_sub_mtd[1], h3xxx_partitions_bank2, ARRAY_SIZE(h3xxx_partitions_bank2));
-#endif
- }
-
- return 0;
-}
-
-static void __exit ipaq_mtd_cleanup(void)
-{
- int i;
-
- if (mymtd) {
- del_mtd_partitions(mymtd);
-#ifndef CONFIG_MTD_CONCAT
- if (my_sub_mtd[1])
- del_mtd_partitions(my_sub_mtd[1]);
-#endif
- map_destroy(mymtd);
-#ifdef CONFIG_MTD_CONCAT
- for(i=0; i<MAX_IPAQ_CS; i++)
-#else
- for(i=1; i<MAX_IPAQ_CS; i++)
-#endif
- {
- if (my_sub_mtd[i])
- map_destroy(my_sub_mtd[i]);
- }
- kfree(parsed_parts);
- }
-}
-
-static int __init h1900_special_case(void)
-{
- /* The iPAQ h1900 is a special case - it has weird ROM. */
- simple_map_init(&ipaq_map[0]);
- ipaq_map[0].size = 0x80000;
- ipaq_map[0].set_vpp = h3xxx_set_vpp;
- ipaq_map[0].phys = 0x0;
- ipaq_map[0].virt = ioremap(0x0, 0x04000000);
- ipaq_map[0].bankwidth = 2;
-
- printk(KERN_NOTICE "iPAQ flash: probing %d-bit flash bus, window=%lx with JEDEC.\n", ipaq_map[0].bankwidth*8, ipaq_map[0].virt);
- mymtd = do_map_probe("jedec_probe", &ipaq_map[0]);
- if (!mymtd)
- return -ENODEV;
- add_mtd_device(mymtd);
- printk(KERN_NOTICE "iPAQ flash: registered h1910 flash\n");
-
- return 0;
-}
-
-module_init(ipaq_mtd_init);
-module_exit(ipaq_mtd_cleanup);
-
-MODULE_AUTHOR("Jamey Hicks");
-MODULE_DESCRIPTION("IPAQ CFI map driver");
-MODULE_LICENSE("MIT");
projects / GitHub / mt8127 / android_kernel_alcatel_ttab.git / commitdiff