/**
2M = MTD SIZE
mtd->erase_size = 512
mtd->erasesize_shift = 9 : every erase block = 512 Byte
mtd->write_size = 512 : this is a flash param , flash support size of every writing
ctx->bounce : temp buffer, and must larger than mtd->write_size
*/
static struct mtd_info *map_ram_probe(struct map_info *map)
{
struct mtd_info *mtd;
/* Check the first byte is RAM */
#if 0
map_write8(map, 0x55, 0);
if (map_read8(map, 0) != 0x55)
return NULL;
map_write8(map, 0xAA, 0);
if (map_read8(map, 0) != 0xAA)
return NULL;
/* Check the last byte is RAM */
map_write8(map, 0x55, map->size-1);
if (map_read8(map, map->size-1) != 0x55)
return NULL;
map_write8(map, 0xAA, map->size-1);
if (map_read8(map, map->size-1) != 0xAA)
return NULL;
#endif
/* OK. It seems to be RAM. */
mtd = kzalloc(sizeof(*mtd), GFP_KERNEL);
if (!mtd)
return NULL;
map->fldrv = &mapram_chipdrv;
mtd->priv = map;
mtd->name = map->name;
mtd->type = MTD_RAM;
mtd->size = map->size;
mtd->erase = mapram_erase;
mtd->get_unmapped_area = mapram_unmapped_area;
mtd->read = mapram_read;
mtd->write = mapram_write;
#ifdef CONFIG_HUAWEI_KERNEL
mtd->panic_write= mapram_write;
#endif
mtd->sync = mapram_nop;
mtd->flags = MTD_CAP_RAM;
#ifdef CONFIG_HUAWEI_KERNEL
mtd->writesize = 512;
mtd->block_isbad = mapram_block_isbad;
mtd->erasesize = 512;
#endif
while(mtd->size & (mtd->erasesize - 1))
mtd->erasesize >>= 1;
__module_get(THIS_MODULE);
return mtd;
}
static struct mtd_info *map_ram_probe(struct map_info *map)
{
struct mtd_info *mtd;
/* Check the first byte is RAM */
#if 0
map_write8(map, 0x55, 0);
if (map_read8(map, 0) != 0x55)
return NULL;
map_write8(map, 0xAA, 0);
if (map_read8(map, 0) != 0xAA)
return NULL;
/* Check the last byte is RAM */
map_write8(map, 0x55, map->size-1);
if (map_read8(map, map->size-1) != 0x55)
return NULL;
map_write8(map, 0xAA, map->size-1);
if (map_read8(map, map->size-1) != 0xAA)
return NULL;
#endif
/* OK. It seems to be RAM. */
mtd = kmalloc(sizeof(*mtd), GFP_KERNEL);
if (!mtd)
return NULL;
memset(mtd, 0, sizeof(*mtd));
map->fldrv = &mapram_chipdrv;
mtd->priv = map;
mtd->name = map->name;
mtd->type = MTD_RAM;
mtd->size = map->size;
mtd->erase = mapram_erase;
mtd->read = mapram_read;
mtd->write = mapram_write;
mtd->sync = mapram_nop;
mtd->flags = MTD_CAP_RAM;
mtd->writesize = 1;
mtd->erasesize = PAGE_SIZE;
while(mtd->size & (mtd->erasesize - 1))
mtd->erasesize >>= 1;
__module_get(THIS_MODULE);
return mtd;
}
static struct mtd_info *map_ram_probe(struct map_info *map)
{
struct mtd_info *mtd;
#if 0
map_write8(map, 0x55, 0);
if (map_read8(map, 0) != 0x55)
return NULL;
map_write8(map, 0xAA, 0);
if (map_read8(map, 0) != 0xAA)
return NULL;
map_write8(map, 0x55, map->size-1);
if (map_read8(map, map->size-1) != 0x55)
return NULL;
map_write8(map, 0xAA, map->size-1);
if (map_read8(map, map->size-1) != 0xAA)
return NULL;
#endif
mtd = kzalloc(sizeof(*mtd), GFP_KERNEL);
if (!mtd)
return NULL;
map->fldrv = &mapram_chipdrv;
mtd->priv = map;
mtd->name = map->name;
mtd->type = MTD_RAM;
mtd->size = map->size;
mtd->_erase = mapram_erase;
mtd->_get_unmapped_area = mapram_unmapped_area;
mtd->_read = mapram_read;
mtd->_write = mapram_write;
mtd->_sync = mapram_nop;
mtd->flags = MTD_CAP_RAM;
mtd->writesize = 1;
mtd->erasesize = PAGE_SIZE;
while(mtd->size & (mtd->erasesize - 1))
mtd->erasesize >>= 1;
__module_get(THIS_MODULE);
return mtd;
}