JFFS2 command support on OneNAND Next time it will be more optimized and clean-up.

Signed-off-by: Kyungmin Park kyungmin.park@samsung.com --- diff --git a/common/cmd_jffs2.c b/common/cmd_jffs2.c index 1b67e73..959306f 100644 --- a/common/cmd_jffs2.c +++ b/common/cmd_jffs2.c @@ -51,7 +51,7 @@ * mtdids=<idmap>[,<idmap>,...] * * <idmap> := <dev-id>=<mtd-id> - * <dev-id> := 'nand'|'nor'<dev-num> + * <dev-id> := 'nand'|'nor'|'onenand'<dev-num> * <dev-num> := mtd device number, 0... * <mtd-id> := unique device tag used by linux kernel to find mtd device (mtd->name) * @@ -103,6 +103,13 @@ #include <nand.h> #endif /* !CFG_NAND_LEGACY */ #endif + +#if defined(CONFIG_CMD_ONENAND) +#include <linux/mtd/mtd.h> +#include <linux/mtd/onenand.h> +#include <onenand_uboot.h> +#endif + /* enable/disable debugging messages */ #define DEBUG_JFFS #undef DEBUG_JFFS @@ -401,6 +408,43 @@ static int part_validate_nand(struct mtdids *id, struct part_info *part) }

/** + * Performs sanity check for supplied OneNAND flash partition. + * Table of existing OneNAND flash devices is searched and partition device + * is located. Alignment with the granularity of nand erasesize is verified. + * + * @param id of the parent device + * @param part partition to validate + * @return 0 if partition is valid, 1 otherwise + */ +static int part_validate_onenand(struct mtdids *id, struct part_info *part) +{ +#if defined(CONFIG_CMD_ONENAND) + /* info for OneNAND chips */ + struct mtd_info *mtd; + + mtd = &onenand_mtd; + + if ((unsigned long)(part->offset) % mtd->erasesize) { + printf("%s%d: partition (%s) start offset" + "alignment incorrect\n", + MTD_DEV_TYPE(id->type), id->num, part->name); + return 1; + } + + if (part->size % mtd->erasesize) { + printf("%s%d: partition (%s) size alignment incorrect\n", + MTD_DEV_TYPE(id->type), id->num, part->name); + return 1; + } + + return 0; +#else + return 1; +#endif +} + + +/** * Performs sanity check for supplied partition. Offset and size are verified * to be within valid range. Partition type is checked and either * parts_validate_nor() or parts_validate_nand() is called with the argument @@ -436,6 +480,8 @@ static int part_validate(struct mtdids *id, struct part_info *part) return part_validate_nand(id, part); else if (id->type == MTD_DEV_TYPE_NOR) return part_validate_nor(id, part); + else if (id->type == MTD_DEV_TYPE_ONENAND) + return part_validate_onenand(id, part); else DEBUGF("part_validate: invalid dev type\n");

@@ -755,7 +801,15 @@ static int device_validate(u8 type, u8 num, u32 *size) #else printf("support for NAND devices not present\n"); #endif - } + } else if (type == MTD_DEV_TYPE_ONENAND) { +#if defined(CONFIG_CMD_ONENAND) + *size = onenand_mtd.size; + return 0; +#else + printf("support for OneNAND devices not present\n"); +#endif + } else + printf("Unknown defice type %d\n", type);

return 1; } @@ -1065,8 +1119,8 @@ static struct mtdids* id_find_by_mtd_id(const char *mtd_id, unsigned int mtd_id_ #endif /* #ifdef CONFIG_JFFS2_CMDLINE */

/** - * Parse device id string <dev-id> := 'nand'|'nor'<dev-num>, return device - * type and number. + * Parse device id string <dev-id> := 'nand'|'nor'|'onenand'<dev-num>, + * return device type and number. * * @param id string describing device id * @param ret_id output pointer to next char after parse completes (output) @@ -1085,6 +1139,9 @@ int id_parse(const char *id, const char **ret_id, u8 *dev_type, u8 *dev_num) } else if (strncmp(p, "nor", 3) == 0) { *dev_type = MTD_DEV_TYPE_NOR; p += 3; + } else if (strncmp(p, "onenand", 7) == 0) { + *dev_type = MTD_DEV_TYPE_ONENAND; + p += 7; } else { printf("incorrect device type in %s\n", id); return 1; @@ -1489,7 +1546,7 @@ static int parse_mtdids(const char *const ids) while(p && (*p != '\0')) {

ret = 1; - /* parse 'nor'|'nand'<dev-num> */ + /* parse 'nor'|'nand'|'onenand'<dev-num> */ if (id_parse(p, &p, &type, &num) != 0) break;

diff --git a/fs/jffs2/jffs2_1pass.c b/fs/jffs2/jffs2_1pass.c index d1423c1..88b8f64 100644 --- a/fs/jffs2/jffs2_1pass.c +++ b/fs/jffs2/jffs2_1pass.c @@ -271,6 +271,107 @@ static void put_fl_mem_nand(void *buf) } #endif

+#if defined(CONFIG_CMD_ONENAND) + +#include <linux/mtd/mtd.h> +#include <linux/mtd/onenand.h> +#include <onenand_uboot.h> + +#define ONENAND_PAGE_SIZE 2048 +#define ONENAND_PAGE_SHIFT 11 +#define ONENAND_PAGE_MASK (~(ONENAND_PAGE_SIZE-1)) + +#ifndef ONENAND_CACHE_PAGES +#define ONENAND_CACHE_PAGES 4 +#endif +#define ONENAND_CACHE_SIZE (ONENAND_CACHE_PAGES*ONENAND_PAGE_SIZE) + +static u8* onenand_cache; +static u32 onenand_cache_off = (u32)-1; + +static int read_onenand_cached(u32 off, u32 size, u_char *buf) +{ + u32 bytes_read = 0; + size_t retlen; + int cpy_bytes; + + while (bytes_read < size) { + if ((off + bytes_read < onenand_cache_off) || + (off + bytes_read >= onenand_cache_off + ONENAND_CACHE_SIZE)) { + onenand_cache_off = (off + bytes_read) & ONENAND_PAGE_MASK; + if (!onenand_cache) { + /* This memory never gets freed but 'cause + it's a bootloader, nobody cares */ + onenand_cache = malloc(ONENAND_CACHE_SIZE); + if (!onenand_cache) { + printf("read_onenand_cached: can't alloc cache size %d bytes\n", + ONENAND_CACHE_SIZE); + return -1; + } + } + + retlen = ONENAND_CACHE_SIZE; + if (onenand_read(&onenand_mtd, onenand_cache_off, retlen, + &retlen, onenand_cache) != 0 || + retlen != ONENAND_CACHE_SIZE) { + printf("read_onenand_cached: error reading nand off %#x size %d bytes\n", + onenand_cache_off, ONENAND_CACHE_SIZE); + return -1; + } + } + cpy_bytes = onenand_cache_off + ONENAND_CACHE_SIZE - (off + bytes_read); + if (cpy_bytes > size - bytes_read) + cpy_bytes = size - bytes_read; + memcpy(buf + bytes_read, + onenand_cache + off + bytes_read - onenand_cache_off, + cpy_bytes); + bytes_read += cpy_bytes; + } + return bytes_read; +} + +static void *get_fl_mem_onenand(u32 off, u32 size, void *ext_buf) +{ + u_char *buf = ext_buf ? (u_char *)ext_buf : (u_char *)malloc(size); + + if (NULL == buf) { + printf("get_fl_mem_onenand: can't alloc %d bytes\n", size); + return NULL; + } + if (read_onenand_cached(off, size, buf) < 0) { + if (!ext_buf) + free(buf); + return NULL; + } + + return buf; +} + +static void *get_node_mem_onenand(u32 off) +{ + struct jffs2_unknown_node node; + void *ret = NULL; + + if (NULL == get_fl_mem_onenand(off, sizeof(node), &node)) + return NULL; + + ret = get_fl_mem_onenand(off, node.magic == + JFFS2_MAGIC_BITMASK ? node.totlen : sizeof(node), + NULL); + if (!ret) { + printf("off = %#x magic %#x type %#x node.totlen = %d\n", + off, node.magic, node.nodetype, node.totlen); + } + return ret; +} + + +static void put_fl_mem_onenand(void *buf) +{ + free(buf); +} +#endif +

#if defined(CONFIG_CMD_FLASH) /* @@ -316,6 +417,11 @@ static inline void *get_fl_mem(u32 off, u32 size, void *ext_buf) return get_fl_mem_nand(off, size, ext_buf); #endif

+#if defined(CONFIG_CMD_ONENAND) + if (id->type == MTD_DEV_TYPE_ONENAND) + return get_fl_mem_onenand(off, size, ext_buf); +#endif + printf("get_fl_mem: unknown device type, using raw offset!\n"); return (void*)off; } @@ -335,6 +441,11 @@ static inline void *get_node_mem(u32 off) return get_node_mem_nand(off); #endif

+#if defined(CONFIG_CMD_ONENAND) + if (id->type == MTD_DEV_TYPE_ONENAND) + return get_node_mem_onenand(off); +#endif + printf("get_node_mem: unknown device type, using raw offset!\n"); return (void*)off; } @@ -348,6 +459,13 @@ static inline void put_fl_mem(void *buf) if (id->type == MTD_DEV_TYPE_NAND) return put_fl_mem_nand(buf); #endif + +#if defined(CONFIG_CMD_ONENAND) + struct mtdids *id = current_part->dev->id; + + if (id->type == MTD_DEV_TYPE_ONENAND) + return put_fl_mem_onenand(buf); +#endif }

/* Compression names */ diff --git a/include/jffs2/load_kernel.h b/include/jffs2/load_kernel.h index 882a80e..b46eca3 100644 --- a/include/jffs2/load_kernel.h +++ b/include/jffs2/load_kernel.h @@ -28,9 +28,14 @@ #include <linux/list.h>

/* mtd device types */ -#define MTD_DEV_TYPE_NOR 0x0001 -#define MTD_DEV_TYPE_NAND 0x0002 -#define MTD_DEV_TYPE(type) ((type == MTD_DEV_TYPE_NAND) ? "nand" : "nor") +enum { + MTD_DEV_TYPE_NOR, + MTD_DEV_TYPE_NAND, + MTD_DEV_TYPE_ONENAND, +}; + +#define MTD_DEV_TYPE(type) ((type == MTD_DEV_TYPE_NAND) ? "nand" : \ + (type == MTD_DEV_TYPE_ONENAND) ? "onenand" : "nor")

struct mtd_device { struct list_head link; diff --git a/include/linux/mtd/onenand.h b/include/linux/mtd/onenand.h index 4b0c2df..5bc905e 100644 --- a/include/linux/mtd/onenand.h +++ b/include/linux/mtd/onenand.h @@ -17,6 +17,7 @@ /* Note: The header order is impoertant */ #include <onenand_uboot.h>

+#include <linux/mtd/compat.h> #include <linux/mtd/bbm.h>

#define MAX_BUFFERRAM 2 diff --git a/include/onenand_uboot.h b/include/onenand_uboot.h index 4449f98..24ace2a 100644 --- a/include/onenand_uboot.h +++ b/include/onenand_uboot.h @@ -27,6 +27,8 @@ typedef int wait_queue_head_t; struct mtd_info; struct erase_info;

+extern struct mtd_info onenand_mtd; + /* Functions */ extern void onenand_init(void); extern int onenand_read(struct mtd_info *mtd, loff_t from, size_t len,