static int __init init_mtdram(void)
{
void *addr;
int err;
if (!total_size)
return -EINVAL;
/* Allocate some memory */
mtd_info = kmalloc(sizeof(struct mtd_info), GFP_KERNEL);
if (!mtd_info)
return -ENOMEM;
addr = vmalloc(MTDRAM_TOTAL_SIZE);
if (!addr) {
kfree(mtd_info);
mtd_info = NULL;
return -ENOMEM;
}
err = mtdram_init_device(mtd_info, addr, MTDRAM_TOTAL_SIZE, "mtdram test device");
if (err) {
vfree(addr);
kfree(mtd_info);
mtd_info = NULL;
return err;
}
memset(mtd_info->priv, 0xff, MTDRAM_TOTAL_SIZE);
return err;
}
int __init init_mtdram(void)
{
void *addr;
int err;
/* Allocate some memory */
mtd_info = (struct mtd_info *)kmalloc(sizeof(struct mtd_info), GFP_KERNEL);
if (!mtd_info)
return -ENOMEM;
addr = vmalloc(MTDRAM_TOTAL_SIZE);
if (!addr) {
DEBUG(MTD_DEBUG_LEVEL1,
"Failed to vmalloc memory region of size %ld\n",
(long)MTDRAM_TOTAL_SIZE);
kfree(mtd_info);
mtd_info = NULL;
return -ENOMEM;
}
err = mtdram_init_device(mtd_info, addr,
MTDRAM_TOTAL_SIZE, "mtdram test device");
if (err)
{
vfree(addr);
kfree(mtd_info);
mtd_info = NULL;
return err;
}
memset(mtd_info->priv, 0xff, MTDRAM_TOTAL_SIZE);
return err;
}
static int __init init_mtdram(void)
{
void *addr;
int err;
/* Allocate some memory */
mtd_info = kmalloc(sizeof(struct mtd_info), GFP_KERNEL);
if (!mtd_info)
return -ENOMEM;
addr = ioremap(CONFIG_MTDRAM_ABS_POS, MTDRAM_TOTAL_SIZE);
if (!addr) {
DEBUG(MTD_DEBUG_LEVEL1,
"Failed to ioremap) memory region of size %ld at ABS_POS:%ld\n",
(long)MTDRAM_TOTAL_SIZE, (long)CONFIG_MTDRAM_ABS_POS);
kfree(mtd_info);
mtd_info = NULL;
return -ENOMEM;
}
err = mtdram_init_device(mtd_info, addr,
MTDRAM_TOTAL_SIZE, "mtdram test device");
if (err)
{
iounmap(addr);
kfree(mtd_info);
mtd_info = NULL;
return err;
}
memset(mtd_info->priv, 0xff, MTDRAM_TOTAL_SIZE);
return err;
}
void flash_init(void)
{
struct dentry dentry = { .d_name = "mtd1" };
printk("Creating MTD device %s\n", dentry.d_name);
if (mtdram_init_device(&mtd1, &_binary_sda1_start, 1024,
dentry.d_name))
printk("error: mtdram init device failed\n");
add_mtd_device(&mtd1, dentry.d_name);
}
int main()
{
int fd;
char buffer[128];
/* printk("filesystem at %p\n", &_binary_sda1_start); */
/* dump_romfs_info(&_binary_sda1_start); */
flash_init();
mount("/dev/mtd1", "/dev/flash", "romfs", 0, 0);
/* Lorem ipsum dolor sit amet, consectetur adipiscing elit. */
fd = open("/dev/flash/lorem.txt", 0);
if (fd < 0) {
printk("error: failed to open /home/lorem.txt\n");
TEST_EXIT(1);
}
memset(buffer, 0, 128);
read(fd, buffer, 11);
printk("read(): %s\n", buffer);
if (strcmp(buffer, "Lorem ipsum"))
TEST_EXIT(1);
memset(buffer, 0, 128);
read(fd, buffer, 10);
printk("read(): %s\n", buffer);
if (strcmp(buffer, " dolor sit"))
TEST_EXIT(1);
memset(buffer, 0, 128);
read(fd, buffer, 18);
printk("read(): %s\n", buffer);
if (strcmp(buffer, " amet, consectetur"))
TEST_EXIT(1);
/* rewind the file */
lseek(fd, 0, SEEK_SET);
memset(buffer, 0, 128);
read(fd, buffer, 11);
printk("read(): %s\n", buffer);
if (strcmp(buffer, "Lorem ipsum"))
TEST_EXIT(1);
TEST_EXIT(0);
}
void flash_init(void)
{
struct dentry dentry = { .d_name = "mtd1" };
printk("Creating MTD device %s\n", dentry.d_name);
if (mtdram_init_device(&mtd1, &_binary_sda1_start, 1024,
dentry.d_name))
printk("error: mtdram init device failed\n");
add_mtd_device(&mtd1, dentry.d_name);
}
int main()
{
int fd;
const char filename[] = "/dev/flash/foo/bar/lorem";
char buffer[32];
/* printk("filesystem at %p\n", &_binary_sda1_start); */
/* dump_romfs_info(&_binary_sda1_start); */
flash_init();
mount("/dev/mtd1", "/dev/flash", "romfs", 0, 0);
/* Lorem ipsum dolor sit amet, consectetur adipiscing elit. */
fd = open(filename, 0);
if (fd < 0) {
printk("error: failed to open %s\n", filename);
TEST_EXIT(1);
}
memset(buffer, 0, 32);
if (read(fd, buffer, 11) != 11)
TEST_EXIT(1);
if (strcmp(buffer, "Lorem ipsum"))
TEST_EXIT(1);
memset(buffer, 0, 32);
if (read(fd, buffer, 10) != 10)
TEST_EXIT(1);
if (strcmp(buffer, " dolor sit"))
TEST_EXIT(1);
close(fd);
TEST_EXIT(0);
}
void flash_init(void)
{
struct dentry dentry = { .d_name = "mtd1" };
printk("Creating MTD device %s\n", dentry.d_name);
if (mtdram_init_device(&mtd1, &_binary_sda1_start, 4096,
dentry.d_name))
printk("error: mtdram init device failed\n");
add_mtd_device(&mtd1, dentry.d_name);
}
int main()
{
flash_init();
mount("/dev/mtd1", "/dev/flash", "romfs", 0, 0);
/* execve does not return in POSIX standard */
if (execve("/dev/flash/a.out", 0, 0))
TEST_EXIT(1);
sched_yield();
TEST_EXIT(0);
}
/*
* Probe the flash chip(s) and, if it succeeds, read the partition-table
* and register the partitions with MTD.
*/
static int __init init_axis_flash(void)
{
struct mtd_info *main_mtd;
struct mtd_info *aux_mtd = NULL;
int err = 0;
int pidx = 0;
struct partitiontable_head *ptable_head = NULL;
struct partitiontable_entry *ptable;
int ptable_ok = 0;
static char page[PAGESIZE];
size_t len;
int ram_rootfs_partition = -1; /* -1 => no RAM rootfs partition */
int part;
/* We need a root fs. If it resides in RAM, we need to use an
* MTDRAM device, so it must be enabled in the kernel config,
* but its size must be configured as 0 so as not to conflict
* with our usage.
*/
#if !defined(CONFIG_MTD_MTDRAM) || (CONFIG_MTDRAM_TOTAL_SIZE != 0) || (CONFIG_MTDRAM_ABS_POS != 0)
if (!romfs_in_flash && !nand_boot) {
printk(KERN_EMERG "axisflashmap: Cannot create an MTD RAM "
"device; configure CONFIG_MTD_MTDRAM with size = 0!\n");
panic("This kernel cannot boot from RAM!\n");
}
#endif
#ifndef CONFIG_ETRAX_VCS_SIM
main_mtd = flash_probe();
if (main_mtd)
printk(KERN_INFO "%s: 0x%08x bytes of NOR flash memory.\n",
main_mtd->name, main_mtd->size);
#ifdef CONFIG_ETRAX_NANDFLASH
aux_mtd = crisv32_nand_flash_probe();
if (aux_mtd)
printk(KERN_INFO "%s: 0x%08x bytes of NAND flash memory.\n",
aux_mtd->name, aux_mtd->size);
#ifdef CONFIG_ETRAX_NANDBOOT
{
struct mtd_info *tmp_mtd;
printk(KERN_INFO "axisflashmap: Set to boot from NAND flash, "
"making NAND flash primary device.\n");
tmp_mtd = main_mtd;
main_mtd = aux_mtd;
aux_mtd = tmp_mtd;
}
#endif /* CONFIG_ETRAX_NANDBOOT */
#endif /* CONFIG_ETRAX_NANDFLASH */
if (!main_mtd && !aux_mtd) {
/* There's no reason to use this module if no flash chip can
* be identified. Make sure that's understood.
*/
printk(KERN_INFO "axisflashmap: Found no flash chip.\n");
}
#if 0 /* Dump flash memory so we can see what is going on */
if (main_mtd) {
int sectoraddr, i;
for (sectoraddr = 0; sectoraddr < 2*65536+4096;
sectoraddr += PAGESIZE) {
main_mtd->read(main_mtd, sectoraddr, PAGESIZE, &len,
page);
printk(KERN_INFO
"Sector at %d (length %d):\n",
sectoraddr, len);
for (i = 0; i < PAGESIZE; i += 16) {
printk(KERN_INFO
"%02x %02x %02x %02x "
"%02x %02x %02x %02x "
"%02x %02x %02x %02x "
"%02x %02x %02x %02x\n",
page[i] & 255, page[i+1] & 255,
page[i+2] & 255, page[i+3] & 255,
page[i+4] & 255, page[i+5] & 255,
page[i+6] & 255, page[i+7] & 255,
page[i+8] & 255, page[i+9] & 255,
page[i+10] & 255, page[i+11] & 255,
page[i+12] & 255, page[i+13] & 255,
page[i+14] & 255, page[i+15] & 255);
}
}
}
#endif
if (main_mtd) {
main_mtd->owner = THIS_MODULE;
axisflash_mtd = main_mtd;
loff_t ptable_sector = CONFIG_ETRAX_PTABLE_SECTOR;
/* First partition (rescue) is always set to the default. */
pidx++;
#ifdef CONFIG_ETRAX_NANDBOOT
/* We know where the partition table should be located,
* it will be in first good block after that.
*/
int blockstat;
do {
blockstat = main_mtd->block_isbad(main_mtd,
ptable_sector);
if (blockstat < 0)
ptable_sector = 0; /* read error */
else if (blockstat)
ptable_sector += main_mtd->erasesize;
} while (blockstat && ptable_sector);
#endif
if (ptable_sector) {
main_mtd->read(main_mtd, ptable_sector, PAGESIZE,
&len, page);
ptable_head = &((struct partitiontable *) page)->head;
}
#if 0 /* Dump partition table so we can see what is going on */
printk(KERN_INFO
"axisflashmap: flash read %d bytes at 0x%08x, data: "
"%02x %02x %02x %02x %02x %02x %02x %02x\n",
len, CONFIG_ETRAX_PTABLE_SECTOR,
page[0] & 255, page[1] & 255,
page[2] & 255, page[3] & 255,
page[4] & 255, page[5] & 255,
page[6] & 255, page[7] & 255);
printk(KERN_INFO
"axisflashmap: partition table offset %d, data: "
"%02x %02x %02x %02x %02x %02x %02x %02x\n",
PARTITION_TABLE_OFFSET,
page[PARTITION_TABLE_OFFSET+0] & 255,
page[PARTITION_TABLE_OFFSET+1] & 255,
page[PARTITION_TABLE_OFFSET+2] & 255,
page[PARTITION_TABLE_OFFSET+3] & 255,
page[PARTITION_TABLE_OFFSET+4] & 255,
page[PARTITION_TABLE_OFFSET+5] & 255,
page[PARTITION_TABLE_OFFSET+6] & 255,
page[PARTITION_TABLE_OFFSET+7] & 255);
#endif
}
if (ptable_head && (ptable_head->magic == PARTITION_TABLE_MAGIC)
&& (ptable_head->size <
(MAX_PARTITIONS * sizeof(struct partitiontable_entry) +
PARTITIONTABLE_END_MARKER_SIZE))
&& (*(unsigned long*)((void*)ptable_head + sizeof(*ptable_head) +
ptable_head->size -
PARTITIONTABLE_END_MARKER_SIZE)
== PARTITIONTABLE_END_MARKER)) {
/* Looks like a start, sane length and end of a
* partition table, lets check csum etc.
*/
struct partitiontable_entry *max_addr =
(struct partitiontable_entry *)
((unsigned long)ptable_head + sizeof(*ptable_head) +
ptable_head->size);
unsigned long offset = CONFIG_ETRAX_PTABLE_SECTOR;
unsigned char *p;
unsigned long csum = 0;
ptable = (struct partitiontable_entry *)
((unsigned long)ptable_head + sizeof(*ptable_head));
/* Lets be PARANOID, and check the checksum. */
p = (unsigned char*) ptable;
while (p <= (unsigned char*)max_addr) {
csum += *p++;
csum += *p++;
csum += *p++;
csum += *p++;
}
ptable_ok = (csum == ptable_head->checksum);
/* Read the entries and use/show the info. */
printk(KERN_INFO "axisflashmap: "
"Found a%s partition table at 0x%p-0x%p.\n",
(ptable_ok ? " valid" : "n invalid"), ptable_head,
max_addr);
/* We have found a working bootblock. Now read the
* partition table. Scan the table. It ends with 0xffffffff.
*/
while (ptable_ok
&& ptable->offset != PARTITIONTABLE_END_MARKER
&& ptable < max_addr
&& pidx < MAX_PARTITIONS - 1) {
axis_partitions[pidx].offset = offset + ptable->offset;
#ifdef CONFIG_ETRAX_NANDFLASH
if (main_mtd->type == MTD_NANDFLASH) {
axis_partitions[pidx].size =
(((ptable+1)->offset ==
PARTITIONTABLE_END_MARKER) ?
main_mtd->size :
((ptable+1)->offset + offset)) -
(ptable->offset + offset);
} else
#endif /* CONFIG_ETRAX_NANDFLASH */
axis_partitions[pidx].size = ptable->size;
#ifdef CONFIG_ETRAX_NANDBOOT
/* Save partition number of jffs2 ro partition.
* Needed if RAM booting or root file system in RAM.
*/
if (!nand_boot &&
ram_rootfs_partition < 0 && /* not already set */
ptable->type == PARTITION_TYPE_JFFS2 &&
(ptable->flags & PARTITION_FLAGS_READONLY_MASK) ==
PARTITION_FLAGS_READONLY)
ram_rootfs_partition = pidx;
#endif /* CONFIG_ETRAX_NANDBOOT */
pidx++;
ptable++;
}
}
/* Decide whether to use default partition table. */
/* Only use default table if we actually have a device (main_mtd) */
struct mtd_partition *partition = &axis_partitions[0];
if (main_mtd && !ptable_ok) {
memcpy(axis_partitions, axis_default_partitions,
sizeof(axis_default_partitions));
pidx = NUM_DEFAULT_PARTITIONS;
ram_rootfs_partition = DEFAULT_ROOTFS_PARTITION_NO;
}
/* Add artificial partitions for rootfs if necessary */
if (romfs_in_flash) {
/* rootfs is in directly accessible flash memory = NOR flash.
Add an overlapping device for the rootfs partition. */
printk(KERN_INFO "axisflashmap: Adding partition for "
"overlapping root file system image\n");
axis_partitions[pidx].size = romfs_length;
axis_partitions[pidx].offset = romfs_start - FLASH_CACHED_ADDR;
axis_partitions[pidx].name = "romfs";
axis_partitions[pidx].mask_flags |= MTD_WRITEABLE;
ram_rootfs_partition = -1;
pidx++;
} else if (romfs_length && !nand_boot) {
/* romfs exists in memory, but not in flash, so must be in RAM.
* Configure an MTDRAM partition. */
if (ram_rootfs_partition < 0) {
/* None set yet, put it at the end */
ram_rootfs_partition = pidx;
pidx++;
}
printk(KERN_INFO "axisflashmap: Adding partition for "
"root file system image in RAM\n");
axis_partitions[ram_rootfs_partition].size = romfs_length;
axis_partitions[ram_rootfs_partition].offset = romfs_start;
axis_partitions[ram_rootfs_partition].name = "romfs";
axis_partitions[ram_rootfs_partition].mask_flags |=
MTD_WRITEABLE;
}
#ifdef CONFIG_ETRAX_AXISFLASHMAP_MTD0WHOLE
if (main_mtd) {
main_partition.size = main_mtd->size;
err = mtd_device_register(main_mtd, &main_partition, 1);
if (err)
panic("axisflashmap: Could not initialize "
"partition for whole main mtd device!\n");
}
#endif
/* Now, register all partitions with mtd.
* We do this one at a time so we can slip in an MTDRAM device
* in the proper place if required. */
for (part = 0; part < pidx; part++) {
if (part == ram_rootfs_partition) {
/* add MTDRAM partition here */
struct mtd_info *mtd_ram;
mtd_ram = kmalloc(sizeof(struct mtd_info), GFP_KERNEL);
if (!mtd_ram)
panic("axisflashmap: Couldn't allocate memory "
"for mtd_info!\n");
printk(KERN_INFO "axisflashmap: Adding RAM partition "
"for rootfs image.\n");
err = mtdram_init_device(mtd_ram,
(void *)partition[part].offset,
partition[part].size,
partition[part].name);
if (err)
panic("axisflashmap: Could not initialize "
"MTD RAM device!\n");
/* JFFS2 likes to have an erasesize. Keep potential
* JFFS2 rootfs happy by providing one. Since image
* was most likely created for main mtd, use that
* erasesize, if available. Otherwise, make a guess. */
mtd_ram->erasesize = (main_mtd ? main_mtd->erasesize :
CONFIG_ETRAX_PTABLE_SECTOR);
} else {
err = mtd_device_register(main_mtd, &partition[part],
1);
if (err)
panic("axisflashmap: Could not add mtd "
"partition %d\n", part);
}
}
#endif /* CONFIG_EXTRAX_VCS_SIM */
#ifdef CONFIG_ETRAX_VCS_SIM
/* For simulator, always use a RAM partition.
* The rootfs will be found after the kernel in RAM,
* with romfs_start and romfs_end indicating location and size.
*/
struct mtd_info *mtd_ram;
mtd_ram = kmalloc(sizeof(struct mtd_info), GFP_KERNEL);
if (!mtd_ram) {
panic("axisflashmap: Couldn't allocate memory for "
"mtd_info!\n");
}
printk(KERN_INFO "axisflashmap: Adding RAM partition for romfs, "
"at %u, size %u\n",
(unsigned) romfs_start, (unsigned) romfs_length);
err = mtdram_init_device(mtd_ram, (void *)romfs_start,
romfs_length, "romfs");
if (err) {
panic("axisflashmap: Could not initialize MTD RAM "
"device!\n");
}
#endif /* CONFIG_EXTRAX_VCS_SIM */
#ifndef CONFIG_ETRAX_VCS_SIM
if (aux_mtd) {
aux_partition.size = aux_mtd->size;
err = mtd_device_register(aux_mtd, &aux_partition, 1);
if (err)
panic("axisflashmap: Could not initialize "
"aux mtd device!\n");
}
#endif /* CONFIG_EXTRAX_VCS_SIM */
return err;
}
/*
* Probe the flash chip(s) and, if it succeeds, read the partition-table
* and register the partitions with MTD.
*/
static int __init init_axis_flash(void)
{
struct mtd_info *mymtd;
int err = 0;
int pidx = 0;
struct partitiontable_head *ptable_head = NULL;
struct partitiontable_entry *ptable;
int use_default_ptable = 1; /* Until proven otherwise. */
const char *pmsg = KERN_INFO " /dev/flash%d at 0x%08x, size 0x%08x\n";
static char page[512];
size_t len;
#ifndef CONFIG_ETRAXFS_SIM
mymtd = flash_probe();
mymtd->read(mymtd, CONFIG_ETRAX_PTABLE_SECTOR, 512, &len, page);
ptable_head = (struct partitiontable_head *)(page + PARTITION_TABLE_OFFSET);
if (!mymtd) {
/* There's no reason to use this module if no flash chip can
* be identified. Make sure that's understood.
*/
printk(KERN_INFO "axisflashmap: Found no flash chip.\n");
} else {
printk(KERN_INFO "%s: 0x%08x bytes of flash memory.\n",
mymtd->name, mymtd->size);
axisflash_mtd = mymtd;
}
if (mymtd) {
mymtd->owner = THIS_MODULE;
}
pidx++; /* First partition is always set to the default. */
if (ptable_head && (ptable_head->magic == PARTITION_TABLE_MAGIC)
&& (ptable_head->size <
(MAX_PARTITIONS * sizeof(struct partitiontable_entry) +
PARTITIONTABLE_END_MARKER_SIZE))
&& (*(unsigned long*)((void*)ptable_head + sizeof(*ptable_head) +
ptable_head->size -
PARTITIONTABLE_END_MARKER_SIZE)
== PARTITIONTABLE_END_MARKER)) {
/* Looks like a start, sane length and end of a
* partition table, lets check csum etc.
*/
int ptable_ok = 0;
struct partitiontable_entry *max_addr =
(struct partitiontable_entry *)
((unsigned long)ptable_head + sizeof(*ptable_head) +
ptable_head->size);
unsigned long offset = CONFIG_ETRAX_PTABLE_SECTOR;
unsigned char *p;
unsigned long csum = 0;
ptable = (struct partitiontable_entry *)
((unsigned long)ptable_head + sizeof(*ptable_head));
/* Lets be PARANOID, and check the checksum. */
p = (unsigned char*) ptable;
while (p <= (unsigned char*)max_addr) {
csum += *p++;
csum += *p++;
csum += *p++;
csum += *p++;
}
ptable_ok = (csum == ptable_head->checksum);
/* Read the entries and use/show the info. */
printk(KERN_INFO " Found a%s partition table at 0x%p-0x%p.\n",
(ptable_ok ? " valid" : "n invalid"), ptable_head,
max_addr);
/* We have found a working bootblock. Now read the
* partition table. Scan the table. It ends when
* there is 0xffffffff, that is, empty flash.
*/
while (ptable_ok
&& ptable->offset != 0xffffffff
&& ptable < max_addr
&& pidx < MAX_PARTITIONS) {
axis_partitions[pidx].offset = offset + ptable->offset + (crisv32_nand_boot ? 16384 : 0);
axis_partitions[pidx].size = ptable->size;
printk(pmsg, pidx, axis_partitions[pidx].offset,
axis_partitions[pidx].size);
pidx++;
ptable++;
}
use_default_ptable = !ptable_ok;
}
if (romfs_in_flash) {
/* Add an overlapping device for the root partition (romfs). */
axis_partitions[pidx].name = "romfs";
if (crisv32_nand_boot) {
char* data = kmalloc(1024, GFP_KERNEL);
int len;
int offset = crisv32_nand_cramfs_offset & ~(1024-1);
char* tmp;
mymtd->read(mymtd, offset, 1024, &len, data);
tmp = &data[crisv32_nand_cramfs_offset % 512];
axis_partitions[pidx].size = *(unsigned*)(tmp + 4);
axis_partitions[pidx].offset = crisv32_nand_cramfs_offset;
kfree(data);
} else {
axis_partitions[pidx].size = romfs_length;
axis_partitions[pidx].offset = romfs_start - FLASH_CACHED_ADDR;
}
axis_partitions[pidx].mask_flags |= MTD_WRITEABLE;
printk(KERN_INFO
" Adding readonly flash partition for romfs image:\n");
printk(pmsg, pidx, axis_partitions[pidx].offset,
axis_partitions[pidx].size);
pidx++;
}
if (mymtd) {
if (use_default_ptable) {
printk(KERN_INFO " Using default partition table.\n");
err = add_mtd_partitions(mymtd, axis_default_partitions,
NUM_DEFAULT_PARTITIONS);
} else {
err = add_mtd_partitions(mymtd, axis_partitions, pidx);
}
if (err) {
panic("axisflashmap could not add MTD partitions!\n");
}
}
/* CONFIG_EXTRAXFS_SIM */
#endif
if (!romfs_in_flash) {
/* Create an RAM device for the root partition (romfs). */
#if !defined(CONFIG_MTD_MTDRAM) || (CONFIG_MTDRAM_TOTAL_SIZE != 0) || (CONFIG_MTDRAM_ABS_POS != 0)
/* No use trying to boot this kernel from RAM. Panic! */
printk(KERN_EMERG "axisflashmap: Cannot create an MTD RAM "
"device due to kernel (mis)configuration!\n");
panic("This kernel cannot boot from RAM!\n");
#else
struct mtd_info *mtd_ram;
mtd_ram = (struct mtd_info *)kmalloc(sizeof(struct mtd_info),
GFP_KERNEL);
if (!mtd_ram) {
panic("axisflashmap couldn't allocate memory for "
"mtd_info!\n");
}
printk(KERN_INFO " Adding RAM partition for romfs image:\n");
printk(pmsg, pidx, romfs_start, romfs_length);
err = mtdram_init_device(mtd_ram, (void*)romfs_start,
romfs_length, "romfs");
if (err) {
panic("axisflashmap could not initialize MTD RAM "
"device!\n");
}
#endif
}
return err;
}
static int __init init_axis_flash(void)
{
struct mtd_info *mymtd;
int err = 0;
int pidx = 0;
struct partitiontable_head *ptable_head = NULL;
struct partitiontable_entry *ptable;
int use_default_ptable = 1;
const char pmsg[] = " /dev/flash%d at 0x%08x, size 0x%08x\n";
if (!(mymtd = flash_probe())) {
printk(KERN_INFO "axisflashmap: Found no flash chip.\n");
} else {
printk(KERN_INFO "%s: 0x%08x bytes of flash memory.\n",
mymtd->name, mymtd->size);
axisflash_mtd = mymtd;
}
if (mymtd) {
mymtd->owner = THIS_MODULE;
ptable_head = (struct partitiontable_head *)(FLASH_CACHED_ADDR +
CONFIG_ETRAX_PTABLE_SECTOR +
PARTITION_TABLE_OFFSET);
}
pidx++;
if (ptable_head && (ptable_head->magic == PARTITION_TABLE_MAGIC)
&& (ptable_head->size <
(MAX_PARTITIONS * sizeof(struct partitiontable_entry) +
PARTITIONTABLE_END_MARKER_SIZE))
&& (*(unsigned long*)((void*)ptable_head + sizeof(*ptable_head) +
ptable_head->size -
PARTITIONTABLE_END_MARKER_SIZE)
== PARTITIONTABLE_END_MARKER)) {
int ptable_ok = 0;
struct partitiontable_entry *max_addr =
(struct partitiontable_entry *)
((unsigned long)ptable_head + sizeof(*ptable_head) +
ptable_head->size);
unsigned long offset = CONFIG_ETRAX_PTABLE_SECTOR;
unsigned char *p;
unsigned long csum = 0;
ptable = (struct partitiontable_entry *)
((unsigned long)ptable_head + sizeof(*ptable_head));
p = (unsigned char*) ptable;
while (p <= (unsigned char*)max_addr) {
csum += *p++;
csum += *p++;
csum += *p++;
csum += *p++;
}
ptable_ok = (csum == ptable_head->checksum);
printk(KERN_INFO " Found a%s partition table at 0x%p-0x%p.\n",
(ptable_ok ? " valid" : "n invalid"), ptable_head,
max_addr);
while (ptable_ok
&& ptable->offset != 0xffffffff
&& ptable < max_addr
&& pidx < MAX_PARTITIONS) {
axis_partitions[pidx].offset = offset + ptable->offset;
axis_partitions[pidx].size = ptable->size;
printk(pmsg, pidx, axis_partitions[pidx].offset,
axis_partitions[pidx].size);
pidx++;
ptable++;
}
use_default_ptable = !ptable_ok;
}
if (romfs_in_flash) {
axis_partitions[pidx].name = "romfs";
axis_partitions[pidx].size = romfs_length;
axis_partitions[pidx].offset = romfs_start - FLASH_CACHED_ADDR;
axis_partitions[pidx].mask_flags |= MTD_WRITEABLE;
printk(KERN_INFO
" Adding readonly flash partition for romfs image:\n");
printk(pmsg, pidx, axis_partitions[pidx].offset,
axis_partitions[pidx].size);
pidx++;
}
#ifdef CONFIG_ETRAX_AXISFLASHMAP_MTD0WHOLE
if (mymtd) {
main_partition.size = mymtd->size;
err = mtd_device_register(mymtd, &main_partition, 1);
if (err)
panic("axisflashmap: Could not initialize "
"partition for whole main mtd device!\n");
}
#endif
if (mymtd) {
if (use_default_ptable) {
printk(KERN_INFO " Using default partition table.\n");
err = mtd_device_register(mymtd,
axis_default_partitions,
NUM_DEFAULT_PARTITIONS);
} else {
err = mtd_device_register(mymtd, axis_partitions,
pidx);
}
if (err)
panic("axisflashmap could not add MTD partitions!\n");
}
if (!romfs_in_flash) {
#if !defined(CONFIG_MTD_MTDRAM) || (CONFIG_MTDRAM_TOTAL_SIZE != 0) || (CONFIG_MTDRAM_ABS_POS != 0)
printk(KERN_EMERG "axisflashmap: Cannot create an MTD RAM "
"device due to kernel (mis)configuration!\n");
panic("This kernel cannot boot from RAM!\n");
#else
struct mtd_info *mtd_ram;
mtd_ram = kmalloc(sizeof(struct mtd_info), GFP_KERNEL);
if (!mtd_ram)
panic("axisflashmap couldn't allocate memory for "
"mtd_info!\n");
printk(KERN_INFO " Adding RAM partition for romfs image:\n");
printk(pmsg, pidx, (unsigned)romfs_start,
(unsigned)romfs_length);
err = mtdram_init_device(mtd_ram,
(void *)romfs_start,
romfs_length,
"romfs");
if (err)
panic("axisflashmap could not initialize MTD RAM "
"device!\n");
#endif
}
return err;
}
static int __init init_axis_flash(void)
{
struct mtd_info *main_mtd;
struct mtd_info *aux_mtd = NULL;
int err = 0;
int pidx = 0;
struct partitiontable_head *ptable_head = NULL;
struct partitiontable_entry *ptable;
int ptable_ok = 0;
static char page[PAGESIZE];
size_t len;
int ram_rootfs_partition = -1;
int part;
#if !defined(CONFIG_MTD_MTDRAM) || (CONFIG_MTDRAM_TOTAL_SIZE != 0) || (CONFIG_MTDRAM_ABS_POS != 0)
if (!romfs_in_flash && !nand_boot) {
printk(KERN_EMERG "axisflashmap: Cannot create an MTD RAM "
"device; configure CONFIG_MTD_MTDRAM with size = 0!\n");
panic("This kernel cannot boot from RAM!\n");
}
#endif
#ifndef CONFIG_ETRAX_VCS_SIM
main_mtd = flash_probe();
if (main_mtd)
printk(KERN_INFO "%s: 0x%08x bytes of NOR flash memory.\n",
main_mtd->name, main_mtd->size);
#ifdef CONFIG_ETRAX_NANDFLASH
aux_mtd = crisv32_nand_flash_probe();
if (aux_mtd)
printk(KERN_INFO "%s: 0x%08x bytes of NAND flash memory.\n",
aux_mtd->name, aux_mtd->size);
#ifdef CONFIG_ETRAX_NANDBOOT
{
struct mtd_info *tmp_mtd;
printk(KERN_INFO "axisflashmap: Set to boot from NAND flash, "
"making NAND flash primary device.\n");
tmp_mtd = main_mtd;
main_mtd = aux_mtd;
aux_mtd = tmp_mtd;
}
#endif
#endif
if (!main_mtd && !aux_mtd) {
printk(KERN_INFO "axisflashmap: Found no flash chip.\n");
}
#if 0
if (main_mtd) {
int sectoraddr, i;
for (sectoraddr = 0; sectoraddr < 2*65536+4096;
sectoraddr += PAGESIZE) {
main_mtd->read(main_mtd, sectoraddr, PAGESIZE, &len,
page);
printk(KERN_INFO
"Sector at %d (length %d):\n",
sectoraddr, len);
for (i = 0; i < PAGESIZE; i += 16) {
printk(KERN_INFO
"%02x %02x %02x %02x "
"%02x %02x %02x %02x "
"%02x %02x %02x %02x "
"%02x %02x %02x %02x\n",
page[i] & 255, page[i+1] & 255,
page[i+2] & 255, page[i+3] & 255,
page[i+4] & 255, page[i+5] & 255,
page[i+6] & 255, page[i+7] & 255,
page[i+8] & 255, page[i+9] & 255,
page[i+10] & 255, page[i+11] & 255,
page[i+12] & 255, page[i+13] & 255,
page[i+14] & 255, page[i+15] & 255);
}
}
}
#endif
if (main_mtd) {
main_mtd->owner = THIS_MODULE;
axisflash_mtd = main_mtd;
loff_t ptable_sector = CONFIG_ETRAX_PTABLE_SECTOR;
pidx++;
#ifdef CONFIG_ETRAX_NANDBOOT
int blockstat;
do {
blockstat = mtd_block_isbad(main_mtd, ptable_sector);
if (blockstat < 0)
ptable_sector = 0;
else if (blockstat)
ptable_sector += main_mtd->erasesize;
} while (blockstat && ptable_sector);
#endif
if (ptable_sector) {
mtd_read(main_mtd, ptable_sector, PAGESIZE, &len,
page);
ptable_head = &((struct partitiontable *) page)->head;
}
#if 0
printk(KERN_INFO
"axisflashmap: flash read %d bytes at 0x%08x, data: "
"%02x %02x %02x %02x %02x %02x %02x %02x\n",
len, CONFIG_ETRAX_PTABLE_SECTOR,
page[0] & 255, page[1] & 255,
page[2] & 255, page[3] & 255,
page[4] & 255, page[5] & 255,
page[6] & 255, page[7] & 255);
printk(KERN_INFO
"axisflashmap: partition table offset %d, data: "
"%02x %02x %02x %02x %02x %02x %02x %02x\n",
PARTITION_TABLE_OFFSET,
page[PARTITION_TABLE_OFFSET+0] & 255,
page[PARTITION_TABLE_OFFSET+1] & 255,
page[PARTITION_TABLE_OFFSET+2] & 255,
page[PARTITION_TABLE_OFFSET+3] & 255,
page[PARTITION_TABLE_OFFSET+4] & 255,
page[PARTITION_TABLE_OFFSET+5] & 255,
page[PARTITION_TABLE_OFFSET+6] & 255,
page[PARTITION_TABLE_OFFSET+7] & 255);
#endif
}
if (ptable_head && (ptable_head->magic == PARTITION_TABLE_MAGIC)
&& (ptable_head->size <
(MAX_PARTITIONS * sizeof(struct partitiontable_entry) +
PARTITIONTABLE_END_MARKER_SIZE))
&& (*(unsigned long*)((void*)ptable_head + sizeof(*ptable_head) +
ptable_head->size -
PARTITIONTABLE_END_MARKER_SIZE)
== PARTITIONTABLE_END_MARKER)) {
struct partitiontable_entry *max_addr =
(struct partitiontable_entry *)
((unsigned long)ptable_head + sizeof(*ptable_head) +
ptable_head->size);
unsigned long offset = CONFIG_ETRAX_PTABLE_SECTOR;
unsigned char *p;
unsigned long csum = 0;
ptable = (struct partitiontable_entry *)
((unsigned long)ptable_head + sizeof(*ptable_head));
p = (unsigned char*) ptable;
while (p <= (unsigned char*)max_addr) {
csum += *p++;
csum += *p++;
csum += *p++;
csum += *p++;
}
ptable_ok = (csum == ptable_head->checksum);
printk(KERN_INFO "axisflashmap: "
"Found a%s partition table at 0x%p-0x%p.\n",
(ptable_ok ? " valid" : "n invalid"), ptable_head,
max_addr);
while (ptable_ok
&& ptable->offset != PARTITIONTABLE_END_MARKER
&& ptable < max_addr
&& pidx < MAX_PARTITIONS - 1) {
axis_partitions[pidx].offset = offset + ptable->offset;
#ifdef CONFIG_ETRAX_NANDFLASH
if (main_mtd->type == MTD_NANDFLASH) {
axis_partitions[pidx].size =
(((ptable+1)->offset ==
PARTITIONTABLE_END_MARKER) ?
main_mtd->size :
((ptable+1)->offset + offset)) -
(ptable->offset + offset);
} else
#endif
axis_partitions[pidx].size = ptable->size;
#ifdef CONFIG_ETRAX_NANDBOOT
if (!nand_boot &&
ram_rootfs_partition < 0 &&
ptable->type == PARTITION_TYPE_JFFS2 &&
(ptable->flags & PARTITION_FLAGS_READONLY_MASK) ==
PARTITION_FLAGS_READONLY)
ram_rootfs_partition = pidx;
#endif
pidx++;
ptable++;
}
}
struct mtd_partition *partition = &axis_partitions[0];
if (main_mtd && !ptable_ok) {
memcpy(axis_partitions, axis_default_partitions,
sizeof(axis_default_partitions));
pidx = NUM_DEFAULT_PARTITIONS;
ram_rootfs_partition = DEFAULT_ROOTFS_PARTITION_NO;
}
if (romfs_in_flash) {
printk(KERN_INFO "axisflashmap: Adding partition for "
"overlapping root file system image\n");
axis_partitions[pidx].size = romfs_length;
axis_partitions[pidx].offset = romfs_start - FLASH_CACHED_ADDR;
axis_partitions[pidx].name = "romfs";
axis_partitions[pidx].mask_flags |= MTD_WRITEABLE;
ram_rootfs_partition = -1;
pidx++;
} else if (romfs_length && !nand_boot) {
if (ram_rootfs_partition < 0) {
ram_rootfs_partition = pidx;
pidx++;
}
printk(KERN_INFO "axisflashmap: Adding partition for "
"root file system image in RAM\n");
axis_partitions[ram_rootfs_partition].size = romfs_length;
axis_partitions[ram_rootfs_partition].offset = romfs_start;
axis_partitions[ram_rootfs_partition].name = "romfs";
axis_partitions[ram_rootfs_partition].mask_flags |=
MTD_WRITEABLE;
}
#ifdef CONFIG_ETRAX_AXISFLASHMAP_MTD0WHOLE
if (main_mtd) {
main_partition.size = main_mtd->size;
err = mtd_device_register(main_mtd, &main_partition, 1);
if (err)
panic("axisflashmap: Could not initialize "
"partition for whole main mtd device!\n");
}
#endif
for (part = 0; part < pidx; part++) {
if (part == ram_rootfs_partition) {
struct mtd_info *mtd_ram;
mtd_ram = kmalloc(sizeof(struct mtd_info), GFP_KERNEL);
if (!mtd_ram)
panic("axisflashmap: Couldn't allocate memory "
"for mtd_info!\n");
printk(KERN_INFO "axisflashmap: Adding RAM partition "
"for rootfs image.\n");
err = mtdram_init_device(mtd_ram,
(void *)partition[part].offset,
partition[part].size,
partition[part].name);
if (err)
panic("axisflashmap: Could not initialize "
"MTD RAM device!\n");
mtd_ram->erasesize = (main_mtd ? main_mtd->erasesize :
CONFIG_ETRAX_PTABLE_SECTOR);
} else {
err = mtd_device_register(main_mtd, &partition[part],
1);
if (err)
panic("axisflashmap: Could not add mtd "
"partition %d\n", part);
}
}
#endif
#ifdef CONFIG_ETRAX_VCS_SIM
struct mtd_info *mtd_ram;
mtd_ram = kmalloc(sizeof(struct mtd_info), GFP_KERNEL);
if (!mtd_ram) {
panic("axisflashmap: Couldn't allocate memory for "
"mtd_info!\n");
}
printk(KERN_INFO "axisflashmap: Adding RAM partition for romfs, "
"at %u, size %u\n",
(unsigned) romfs_start, (unsigned) romfs_length);
err = mtdram_init_device(mtd_ram, (void *)romfs_start,
romfs_length, "romfs");
if (err) {
panic("axisflashmap: Could not initialize MTD RAM "
"device!\n");
}
#endif
#ifndef CONFIG_ETRAX_VCS_SIM
if (aux_mtd) {
aux_partition.size = aux_mtd->size;
err = mtd_device_register(aux_mtd, &aux_partition, 1);
if (err)
panic("axisflashmap: Could not initialize "
"aux mtd device!\n");
}
#endif
return err;
}
