913 lines
26 KiB
C
913 lines
26 KiB
C
#include "norflash.h"
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#include "app_config.h"
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#include "asm/clock.h"
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#include "system/timer.h"
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#if defined(TCFG_NORFLASH_DEV_ENABLE) && TCFG_NORFLASH_DEV_ENABLE
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#undef LOG_TAG_CONST
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#define LOG_TAG "[FLASH]"
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#define LOG_ERROR_ENABLE
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#define LOG_INFO_ENABLE
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#include "debug.h"
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#define MAX_NORFLASH_PART_NUM 4
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struct norflash_partition {
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const char *name;
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u32 start_addr;
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u32 size;
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struct device device;
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};
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static struct norflash_partition nor_part[MAX_NORFLASH_PART_NUM];
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struct norflash_info {
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u32 flash_id;
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u32 flash_capacity;
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int spi_num;
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int spi_err;
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u8 spi_cs_io;
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u8 spi_r_width;
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u8 part_num;
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u8 open_cnt;
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struct norflash_partition *const part_list;
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OS_MUTEX mutex;
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u32 max_end_addr;
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};
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static struct norflash_info _norflash = {
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.spi_num = (int) - 1,
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.part_list = nor_part,
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};
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int _norflash_read(u32 addr, u8 *buf, u32 len, u8 cache);
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int _norflash_eraser(u8 eraser, u32 addr);
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static void _norflash_cache_sync_timer(void *priv);
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static int _norflash_write_pages(u32 addr, u8 *buf, u32 len);
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#define spi_cs_init() \
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do { \
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gpio_set_die(_norflash.spi_cs_io, 1); \
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gpio_set_direction(_norflash.spi_cs_io, 0); \
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gpio_write(_norflash.spi_cs_io, 1); \
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} while (0)
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#define spi_cs_uninit() \
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do { \
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gpio_set_die(_norflash.spi_cs_io, 0); \
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gpio_set_direction(_norflash.spi_cs_io, 1); \
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gpio_set_pull_up(_norflash.spi_cs_io, 0); \
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gpio_set_pull_down(_norflash.spi_cs_io, 0); \
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} while (0)
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#define spi_cs_h() gpio_write(_norflash.spi_cs_io, 1)
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#define spi_cs_l() gpio_write(_norflash.spi_cs_io, 0)
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#define spi_read_byte() spi_recv_byte(_norflash.spi_num, &_norflash.spi_err)
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#define spi_write_byte(x) spi_send_byte(_norflash.spi_num, x)
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#define spi_dma_read(x, y) spi_dma_recv(_norflash.spi_num, x, y)
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#define spi_dma_write(x, y) spi_dma_send(_norflash.spi_num, x, y)
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#define spi_set_width(x) spi_set_bit_mode(_norflash.spi_num, x)
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static struct norflash_partition *norflash_find_part(const char *name)
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{
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struct norflash_partition *part = NULL;
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u32 idx;
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for (idx = 0; idx < MAX_NORFLASH_PART_NUM; idx++) {
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part = &_norflash.part_list[idx];
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if (part->name == NULL) {
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continue;
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}
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if (!strcmp(part->name, name)) {
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return part;
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}
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}
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return NULL;
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}
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static struct norflash_partition *norflash_new_part(const char *name, u32 addr, u32 size)
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{
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struct norflash_partition *part;
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u32 idx;
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for (idx = 0; idx < MAX_NORFLASH_PART_NUM; idx++) {
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part = &_norflash.part_list[idx];
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if (part->name == NULL) {
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break;
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}
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}
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if (part->name != NULL) {
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log_error("create norflash part fail\n");
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return NULL;
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}
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memset(part, 0, sizeof(*part));
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part->name = name;
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part->start_addr = addr;
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part->size = size;
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if (part->start_addr + part->size > _norflash.max_end_addr) {
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_norflash.max_end_addr = part->start_addr + part->size;
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}
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_norflash.part_num++;
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return part;
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}
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static void norflash_delete_part(const char *name)
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{
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struct norflash_partition *part;
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u32 idx;
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for (idx = 0; idx < MAX_NORFLASH_PART_NUM; idx++) {
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part = &_norflash.part_list[idx];
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if (part->name == NULL) {
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continue;
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}
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if (!strcmp(part->name, name)) {
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part->name = NULL;
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_norflash.part_num--;
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}
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}
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}
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static int norflash_verify_part(struct norflash_partition *p)
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{
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struct norflash_partition *part = NULL;
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u32 idx;
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for (idx = 0; idx < MAX_NORFLASH_PART_NUM; idx++) {
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part = &_norflash.part_list[idx];
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if (part->name == NULL) {
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continue;
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}
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if ((p->start_addr >= part->start_addr) && (p->start_addr < part->start_addr + part->size)) {
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if (strcmp(p->name, part->name) != 0) {
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return -1;
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}
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}
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}
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return 0;
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}
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#define FLASH_CACHE_ENABLE 1
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#if FLASH_CACHE_ENABLE
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static u32 flash_cache_addr;
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static u8 *flash_cache_buf = NULL; //缓存4K的数据，与flash里的数据一样。
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static u8 flash_cache_is_dirty;
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static u16 flash_cache_timer;
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#define FLASH_CACHE_SYNC_T_INTERVAL 60
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static int _check_0xff(u8 *buf, u32 len)
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{
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for (u32 i = 0; i < len; i ++) {
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if ((*(buf + i)) != 0xff) {
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return 1;
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}
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}
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return 0;
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}
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#endif
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static u32 _pow(u32 num, int n)
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{
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u32 powint = 1;
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int i;
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for (i = 1; i <= n; i++) {
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powint *= num;
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}
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return powint;
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}
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static int _norflash_wait_ok()
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{
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u32 timeout = 8 * 1000 * 1000 / 100;
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while (timeout--) {
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spi_cs_l();
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spi_write_byte(WINBOND_READ_SR1);
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u8 reg_1 = spi_read_byte();
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spi_cs_h();
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if (!(reg_1 & BIT(0))) {
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break;
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}
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delay(100);
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}
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if (timeout == 0) {
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log_error("norflash_wait_ok timeout!\r\n");
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return 1;
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}
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return 0;
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}
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static void _norflash_send_write_enable()
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{
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spi_cs_l();
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spi_write_byte(WINBOND_WRITE_ENABLE);
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spi_cs_h();
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}
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static u8 is4byte_mode;
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static void _norflash_send_addr(u32 addr)
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{
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if (is4byte_mode) {
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spi_write_byte(addr >> 24);
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}
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spi_write_byte(addr >> 16);
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spi_write_byte(addr >> 8);
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spi_write_byte(addr);
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}
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static u32 _norflash_read_id()
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{
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u8 id[3];
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spi_cs_l();
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spi_write_byte(WINBOND_JEDEC_ID);
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for (u8 i = 0; i < sizeof(id); i++) {
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id[i] = spi_read_byte();
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}
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spi_cs_h();
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return id[0] << 16 | id[1] << 8 | id[2];
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}
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int _norflash_init(const char *name, struct norflash_dev_platform_data *pdata)
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{
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log_info("norflash_init ! %x %x", pdata->spi_cs_port, pdata->spi_read_width);
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if (_norflash.spi_num == (int) - 1) {
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_norflash.spi_num = pdata->spi_hw_num;
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_norflash.spi_cs_io = pdata->spi_cs_port;
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_norflash.spi_r_width = pdata->spi_read_width;
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_norflash.flash_id = 0;
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_norflash.flash_capacity = 0;
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os_mutex_create(&_norflash.mutex);
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_norflash.max_end_addr = 0;
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_norflash.part_num = 0;
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}
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ASSERT(_norflash.spi_num == pdata->spi_hw_num);
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ASSERT(_norflash.spi_cs_io == pdata->spi_cs_port);
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ASSERT(_norflash.spi_r_width == pdata->spi_read_width);
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struct norflash_partition *part;
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part = norflash_find_part(name);
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if (!part) {
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part = norflash_new_part(name, pdata->start_addr, pdata->size);
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ASSERT(part, "not enough norflash partition memory in array\n");
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ASSERT(norflash_verify_part(part) == 0, "norflash partition %s overlaps\n", name);
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log_info("norflash new partition %s\n", part->name);
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} else {
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ASSERT(0, "norflash partition name already exists\n");
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}
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return 0;
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}
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static void clock_critical_enter()
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{
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}
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static void clock_critical_exit()
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{
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if (!(_norflash.flash_id == 0 || _norflash.flash_id == 0xffff)) {
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spi_set_baud(_norflash.spi_num, spi_get_baud(_norflash.spi_num));
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}
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}
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CLOCK_CRITICAL_HANDLE_REG(spi_norflash, clock_critical_enter, clock_critical_exit);
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void norflash_enter_4byte_addr()
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{
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spi_cs_l();
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spi_write_byte(0xb7);
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spi_cs_h();
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}
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void norflash_exit_4byte_addr()
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{
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spi_cs_l();
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spi_write_byte(0xe9);
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spi_cs_h();
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}
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int _norflash_open(void *arg)
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{
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int reg = 0;
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os_mutex_pend(&_norflash.mutex, 0);
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log_info("norflash open\n");
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if (!_norflash.open_cnt) {
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spi_cs_init();
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spi_open(_norflash.spi_num);
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_norflash.flash_id = _norflash_read_id();
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log_info("norflash_read_id: 0x%x\n", _norflash.flash_id);
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if ((_norflash.flash_id == 0) || (_norflash.flash_id == 0xffffff)) {
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log_error("read norflash id error !\n");
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reg = -ENODEV;
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goto __exit;
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}
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_norflash.flash_capacity = 64 * _pow(2, (_norflash.flash_id & 0xff) - 0x10) * 1024;
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log_info("norflash_capacity: 0x%x\n", _norflash.flash_capacity);
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is4byte_mode = 0;
|
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if (_norflash.flash_capacity > 16 * 1024 * 1024) {
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norflash_enter_4byte_addr();
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is4byte_mode = 1;
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}
|
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#if FLASH_CACHE_ENABLE
|
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flash_cache_buf = (u8 *)malloc(4096);
|
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ASSERT(flash_cache_buf, "flash_cache_buf is not ok\n");
|
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flash_cache_addr = 4096;//先给一个大于4096的数
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_norflash_read(0, flash_cache_buf, 4096, 1);
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flash_cache_addr = 0;
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#endif
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log_info("norflash open success !\n");
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}
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if (_norflash.flash_id == 0 || _norflash.flash_id == 0xffffff) {
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log_error("re-open norflash id error !\n");
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reg = -EFAULT;
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goto __exit;
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}
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ASSERT(_norflash.max_end_addr <= _norflash.flash_capacity, "max partition end address is greater than flash capacity\n");
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_norflash.open_cnt++;
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__exit:
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os_mutex_post(&_norflash.mutex);
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return reg;
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}
|
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|
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int _norflash_close(void)
|
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{
|
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os_mutex_pend(&_norflash.mutex, 0);
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log_info("norflash close\n");
|
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if (_norflash.open_cnt) {
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_norflash.open_cnt--;
|
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}
|
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if (!_norflash.open_cnt) {
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#if FLASH_CACHE_ENABLE
|
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if (flash_cache_is_dirty) {
|
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flash_cache_is_dirty = 0;
|
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_norflash_eraser(FLASH_SECTOR_ERASER, flash_cache_addr);
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_norflash_write_pages(flash_cache_addr, flash_cache_buf, 4096);
|
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}
|
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free(flash_cache_buf);
|
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flash_cache_buf = NULL;
|
||
#endif
|
||
spi_close(_norflash.spi_num);
|
||
spi_cs_uninit();
|
||
|
||
log_info("norflash close done\n");
|
||
}
|
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os_mutex_post(&_norflash.mutex);
|
||
return 0;
|
||
}
|
||
|
||
int _norflash_read(u32 addr, u8 *buf, u32 len, u8 cache)
|
||
{
|
||
int reg = 0;
|
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u32 align_addr;
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os_mutex_pend(&_norflash.mutex, 0);
|
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/* y_printf("flash read addr = %d, len = %d\n", addr, len); */
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#if FLASH_CACHE_ENABLE
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if (!cache) {
|
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goto __no_cache1;
|
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}
|
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u32 r_len = 4096 - (addr % 4096);
|
||
if ((addr >= flash_cache_addr) && (addr < (flash_cache_addr + 4096))) {
|
||
if (len <= r_len) {
|
||
memcpy(buf, flash_cache_buf + (addr - flash_cache_addr), len);
|
||
goto __exit;
|
||
} else {
|
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memcpy(buf, flash_cache_buf + (addr - flash_cache_addr), r_len);
|
||
addr += r_len;
|
||
buf += r_len;
|
||
len -= r_len;
|
||
}
|
||
}
|
||
__no_cache1:
|
||
#endif
|
||
spi_cs_l();
|
||
if (_norflash.spi_r_width == 2) {
|
||
spi_write_byte(WINBOND_FAST_READ_DUAL_OUTPUT);
|
||
_norflash_send_addr(addr);
|
||
spi_write_byte(0);
|
||
spi_set_width(SPI_MODE_UNIDIR_2BIT);
|
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spi_dma_read(buf, len);
|
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spi_set_width(SPI_MODE_BIDIR_1BIT);
|
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} else if (_norflash.spi_r_width == 4) {
|
||
spi_write_byte(0x6b);
|
||
_norflash_send_addr(addr);
|
||
spi_write_byte(0);
|
||
spi_set_width(SPI_MODE_UNIDIR_4BIT);
|
||
spi_dma_read(buf, len);
|
||
spi_set_width(SPI_MODE_BIDIR_1BIT);
|
||
} else {
|
||
spi_write_byte(WINBOND_FAST_READ_DATA);
|
||
_norflash_send_addr(addr);
|
||
spi_write_byte(0);
|
||
spi_dma_read(buf, len);
|
||
}
|
||
spi_cs_h();
|
||
//#if FLASH_CACHE_ENABLE
|
||
// if (!cache) {
|
||
// goto __no_cache2;
|
||
// }
|
||
// align_addr = (addr + len) / 4096 * 4096;
|
||
// if ((int)len - (int)((addr + len) - align_addr) >= 4096) {
|
||
// align_addr -= 4096;
|
||
// if (flash_cache_addr != align_addr) {
|
||
// flash_cache_addr = align_addr;
|
||
// memcpy(flash_cache_buf, buf + (align_addr - addr), 4096);
|
||
// }
|
||
// }
|
||
//__no_cache2:
|
||
//#endif
|
||
__exit:
|
||
os_mutex_post(&_norflash.mutex);
|
||
return reg;
|
||
}
|
||
|
||
static int _norflash_write_pages(u32 addr, u8 *buf, u32 len)
|
||
{
|
||
/* y_printf("flash write addr = %d, num = %d\n", addr, len); */
|
||
|
||
int reg;
|
||
u32 first_page_len = 256 - (addr % 256);
|
||
first_page_len = len > first_page_len ? first_page_len : len;
|
||
_norflash_send_write_enable();
|
||
spi_cs_l();
|
||
spi_write_byte(WINBOND_PAGE_PROGRAM);
|
||
_norflash_send_addr(addr) ;
|
||
spi_dma_write(buf, first_page_len);
|
||
spi_cs_h();
|
||
reg = _norflash_wait_ok();
|
||
if (reg) {
|
||
return 1;
|
||
}
|
||
addr += first_page_len;
|
||
buf += first_page_len;
|
||
len -= first_page_len;
|
||
while (len) {
|
||
u32 cnt = len > 256 ? 256 : len;
|
||
_norflash_send_write_enable();
|
||
spi_cs_l();
|
||
spi_write_byte(WINBOND_PAGE_PROGRAM);
|
||
_norflash_send_addr(addr) ;
|
||
spi_dma_write(buf, cnt);
|
||
spi_cs_h();
|
||
reg = _norflash_wait_ok();
|
||
if (reg) {
|
||
return 1;
|
||
}
|
||
addr += cnt;
|
||
buf += cnt;
|
||
len -= cnt;
|
||
}
|
||
return 0;
|
||
}
|
||
|
||
#if FLASH_CACHE_ENABLE
|
||
static void _norflash_cache_sync_timer(void *priv)
|
||
{
|
||
int reg = 0;
|
||
os_mutex_pend(&_norflash.mutex, 0);
|
||
if (flash_cache_is_dirty) {
|
||
flash_cache_is_dirty = 0;
|
||
reg = _norflash_eraser(FLASH_SECTOR_ERASER, flash_cache_addr);
|
||
if (reg) {
|
||
goto __exit;
|
||
}
|
||
reg = _norflash_write_pages(flash_cache_addr, flash_cache_buf, 4096);
|
||
}
|
||
if (flash_cache_timer) {
|
||
sys_timeout_del(flash_cache_timer);
|
||
flash_cache_timer = 0;
|
||
}
|
||
__exit:
|
||
os_mutex_post(&_norflash.mutex);
|
||
}
|
||
#endif
|
||
|
||
int _norflash_write(u32 addr, void *buf, u32 len, u8 cache)
|
||
{
|
||
int reg = 0;
|
||
os_mutex_pend(&_norflash.mutex, 0);
|
||
|
||
u8 *w_buf = (u8 *)buf;
|
||
u32 w_len = len;
|
||
|
||
/* y_printf("flash write addr = %d, num = %d\n", addr, len); */
|
||
#if FLASH_CACHE_ENABLE
|
||
if (!cache) {
|
||
reg = _norflash_write_pages(addr, w_buf, w_len);
|
||
goto __exit;
|
||
}
|
||
u32 align_addr = addr / 4096 * 4096;
|
||
u32 align_len = 4096 - (addr - align_addr);
|
||
align_len = w_len > align_len ? align_len : w_len;
|
||
if (align_addr != flash_cache_addr) {
|
||
if (flash_cache_is_dirty) {
|
||
flash_cache_is_dirty = 0;
|
||
reg = _norflash_eraser(FLASH_SECTOR_ERASER, flash_cache_addr);
|
||
if (reg) {
|
||
goto __exit;
|
||
}
|
||
reg = _norflash_write_pages(flash_cache_addr, flash_cache_buf, 4096);
|
||
if (reg) {
|
||
goto __exit;
|
||
}
|
||
}
|
||
_norflash_read(align_addr, flash_cache_buf, 4096, 0);
|
||
flash_cache_addr = align_addr;
|
||
}
|
||
memcpy(flash_cache_buf + (addr - align_addr), w_buf, align_len);
|
||
if ((addr + align_len) % 4096) {
|
||
flash_cache_is_dirty = 1;
|
||
if (flash_cache_timer) {
|
||
sys_timer_re_run(flash_cache_timer);
|
||
} else {
|
||
flash_cache_timer = sys_timeout_add(0, _norflash_cache_sync_timer, FLASH_CACHE_SYNC_T_INTERVAL);
|
||
}
|
||
} else {
|
||
flash_cache_is_dirty = 0;
|
||
reg = _norflash_eraser(FLASH_SECTOR_ERASER, align_addr);
|
||
if (reg) {
|
||
goto __exit;
|
||
}
|
||
reg = _norflash_write_pages(align_addr, flash_cache_buf, 4096);
|
||
if (reg) {
|
||
goto __exit;
|
||
}
|
||
}
|
||
addr += align_len;
|
||
w_buf += align_len;
|
||
w_len -= align_len;
|
||
while (w_len) {
|
||
u32 cnt = w_len > 4096 ? 4096 : w_len;
|
||
_norflash_read(addr, flash_cache_buf, 4096, 0);
|
||
flash_cache_addr = addr;
|
||
memcpy(flash_cache_buf, w_buf, cnt);
|
||
if ((addr + cnt) % 4096) {
|
||
flash_cache_is_dirty = 1;
|
||
if (flash_cache_timer) {
|
||
sys_timer_re_run(flash_cache_timer);
|
||
} else {
|
||
flash_cache_timer = sys_timeout_add(0, _norflash_cache_sync_timer, FLASH_CACHE_SYNC_T_INTERVAL);
|
||
}
|
||
} else {
|
||
flash_cache_is_dirty = 0;
|
||
reg = _norflash_eraser(FLASH_SECTOR_ERASER, addr);
|
||
if (reg) {
|
||
goto __exit;
|
||
}
|
||
reg = _norflash_write_pages(addr, flash_cache_buf, 4096);
|
||
if (reg) {
|
||
goto __exit;
|
||
}
|
||
}
|
||
addr += cnt;
|
||
w_buf += cnt;
|
||
w_len -= cnt;
|
||
}
|
||
#else
|
||
reg = _norflash_write_pages(addr, w_buf, w_len);
|
||
#endif
|
||
__exit:
|
||
os_mutex_post(&_norflash.mutex);
|
||
return reg;
|
||
}
|
||
|
||
int _norflash_eraser(u8 eraser, u32 addr)
|
||
{
|
||
u8 eraser_cmd;
|
||
switch (eraser) {
|
||
case FLASH_PAGE_ERASER:
|
||
eraser_cmd = WINBOND_PAGE_ERASE;
|
||
addr = addr / 256 * 256;
|
||
break;
|
||
case FLASH_SECTOR_ERASER:
|
||
eraser_cmd = WINBOND_SECTOR_ERASE;
|
||
//r_printf(">>>[test]:addr = %d\n", addr);
|
||
addr = addr / 4096 * 4096;
|
||
break;
|
||
case FLASH_BLOCK_ERASER:
|
||
eraser_cmd = WINBOND_BLOCK_ERASE;
|
||
addr = addr / 65536 * 65536;
|
||
break;
|
||
case FLASH_CHIP_ERASER:
|
||
eraser_cmd = WINBOND_CHIP_ERASE;
|
||
break;
|
||
}
|
||
_norflash_send_write_enable();
|
||
spi_cs_l();
|
||
spi_write_byte(eraser_cmd);
|
||
if (eraser_cmd != WINBOND_CHIP_ERASE) {
|
||
_norflash_send_addr(addr);
|
||
}
|
||
spi_cs_h();
|
||
return _norflash_wait_ok();
|
||
}
|
||
|
||
int _norflash_ioctl(u32 cmd, u32 arg, u32 unit, void *_part)
|
||
{
|
||
int reg = 0;
|
||
struct norflash_partition *part = _part;
|
||
os_mutex_pend(&_norflash.mutex, 0);
|
||
switch (cmd) {
|
||
case IOCTL_GET_STATUS:
|
||
*(u32 *)arg = 1;
|
||
break;
|
||
case IOCTL_GET_ID:
|
||
*((u32 *)arg) = _norflash.flash_id;
|
||
break;
|
||
case IOCTL_GET_CAPACITY:
|
||
if (_norflash.flash_capacity == 0) {
|
||
*(u32 *)arg = 0;
|
||
} else if (_norflash.part_num == 1 && part->start_addr == 0) {
|
||
*(u32 *)arg = _norflash.flash_capacity / unit;
|
||
} else {
|
||
*(u32 *)arg = part->size / unit;
|
||
}
|
||
break;
|
||
case IOCTL_GET_BLOCK_SIZE:
|
||
*(u32 *)arg = 512;
|
||
break;
|
||
case IOCTL_ERASE_PAGE:
|
||
reg = _norflash_eraser(FLASH_PAGE_ERASER, arg * unit + part->start_addr);
|
||
break;
|
||
case IOCTL_ERASE_SECTOR:
|
||
reg = _norflash_eraser(FLASH_SECTOR_ERASER, arg * unit + part->start_addr);
|
||
break;
|
||
case IOCTL_ERASE_BLOCK:
|
||
reg = _norflash_eraser(FLASH_BLOCK_ERASER, arg * unit + part->start_addr);
|
||
break;
|
||
case IOCTL_ERASE_CHIP:
|
||
reg = _norflash_eraser(FLASH_CHIP_ERASER, 0);
|
||
break;
|
||
case IOCTL_FLUSH:
|
||
break;
|
||
case IOCTL_CMD_RESUME:
|
||
break;
|
||
case IOCTL_CMD_SUSPEND:
|
||
break;
|
||
case IOCTL_GET_PART_INFO:
|
||
u32 *info = (u32 *)arg;
|
||
u32 *start_addr = &info[0];
|
||
u32 *part_size = &info[1];
|
||
*start_addr = part->start_addr;
|
||
*part_size = part->size;
|
||
break;
|
||
default:
|
||
reg = -EINVAL;
|
||
break;
|
||
}
|
||
__exit:
|
||
os_mutex_post(&_norflash.mutex);
|
||
return reg;
|
||
}
|
||
|
||
|
||
/*************************************************************************************
|
||
* 挂钩 device_api
|
||
************************************************************************************/
|
||
|
||
static int norflash_dev_init(const struct dev_node *node, void *arg)
|
||
{
|
||
struct norflash_dev_platform_data *pdata = arg;
|
||
return _norflash_init(node->name, pdata);
|
||
}
|
||
|
||
static int norflash_dev_open(const char *name, struct device **device, void *arg)
|
||
{
|
||
struct norflash_partition *part;
|
||
part = norflash_find_part(name);
|
||
if (!part) {
|
||
log_error("no norflash partition is found\n");
|
||
return -ENODEV;
|
||
}
|
||
*device = &part->device;
|
||
(*device)->private_data = part;
|
||
if (atomic_read(&part->device.ref)) {
|
||
return 0;
|
||
}
|
||
return _norflash_open(arg);
|
||
}
|
||
static int norflash_dev_close(struct device *device)
|
||
{
|
||
return _norflash_close();
|
||
}
|
||
static int norflash_dev_read(struct device *device, void *buf, u32 len, u32 offset)
|
||
{
|
||
int reg;
|
||
/* printf("flash read sector = %d, num = %d\n", offset, len); */
|
||
offset = offset * 512;
|
||
len = len * 512;
|
||
struct norflash_partition *part;
|
||
part = (struct norflash_partition *)device->private_data;
|
||
if (!part) {
|
||
log_error("norflash partition invalid\n");
|
||
return -EFAULT;
|
||
}
|
||
offset += part->start_addr;
|
||
reg = _norflash_read(offset, buf, len, 1);
|
||
if (reg) {
|
||
r_printf(">>>[r error]:\n");
|
||
len = 0;
|
||
}
|
||
|
||
len = len / 512;
|
||
return len;
|
||
}
|
||
static int norflash_dev_write(struct device *device, void *buf, u32 len, u32 offset)
|
||
{
|
||
/* printf("flash write sector = %d, num = %d\n", offset, len); */
|
||
int reg = 0;
|
||
offset = offset * 512;
|
||
len = len * 512;
|
||
struct norflash_partition *part = device->private_data;
|
||
if (!part) {
|
||
log_error("norflash partition invalid\n");
|
||
return -EFAULT;
|
||
}
|
||
offset += part->start_addr;
|
||
reg = _norflash_write(offset, buf, len, 1);
|
||
if (reg) {
|
||
r_printf(">>>[w error]:\n");
|
||
len = 0;
|
||
}
|
||
len = len / 512;
|
||
return len;
|
||
}
|
||
static bool norflash_dev_online(const struct dev_node *node)
|
||
{
|
||
return 1;
|
||
}
|
||
static int norflash_dev_ioctl(struct device *device, u32 cmd, u32 arg)
|
||
{
|
||
struct norflash_partition *part = device->private_data;
|
||
if (!part) {
|
||
log_error("norflash partition invalid\n");
|
||
return -EFAULT;
|
||
}
|
||
return _norflash_ioctl(cmd, arg, 512, part);
|
||
}
|
||
|
||
#if 0 //下面这组接口不再使用
|
||
int hook_norflash_init(struct norflash_dev_platform_data *pdata)
|
||
{
|
||
return _norflash_init("xxxx", pdata);
|
||
}
|
||
|
||
int hook_norflash_open(void)
|
||
{
|
||
return _norflash_open(NULL);
|
||
}
|
||
|
||
int hook_norflash_spirec_read(u8 *buf, u32 addr, u32 len)
|
||
{
|
||
/* return _norflash_read(addr, buf, len); */
|
||
return _norflash_read(addr, buf, len, 0);
|
||
}
|
||
|
||
int hook_norflash_spirec_write(u8 *buf, u32 addr, u32 len)
|
||
{
|
||
return _norflash_write_pages(addr, buf, len);
|
||
}
|
||
|
||
void hook_norflash_spirec_eraser(u32 addr)
|
||
{
|
||
_norflash_eraser(FLASH_SECTOR_ERASER, addr);
|
||
}
|
||
#endif
|
||
|
||
/*
|
||
* 1. 外部调用时以512字节为单位的地址和长度，且需要驱动write自己处理擦除，
|
||
* 请使用norflash_dev_ops接口，否则使用本文件内的其他ops
|
||
*
|
||
* 2. 如果不需要驱动自己处理擦除，可以把宏FLASH_CACHE_ENABLE清零，或者把
|
||
* norflash_dev_read()里面调用的_norflash_read()的实参cache填0，
|
||
* norflash_dev_write()同理
|
||
*
|
||
* 3. norflash_dev_ops可以被多个设备名注册，每个设备名被认为是不同分区，所以
|
||
* 需要填不同的分区起始地址和大小，若分区地址有重叠或者最大分区结束地址大于
|
||
* flash容量，会触发ASSERT()
|
||
*
|
||
* 4. 关于IOCTL_GET_CAPACITY，有多个分区注册时返回分区的大小，如果只注册了1
|
||
* 个分区，分区起始地址 == 0时返回flash容量，起始地址 != 0时返回分区大小，
|
||
* norflash_dev_ops返回的长度以512字节为单位
|
||
*
|
||
* 5. 本文件内的各个ops可以同时使用
|
||
*/
|
||
const struct device_operations norflash_dev_ops = {
|
||
.init = norflash_dev_init,
|
||
.online = norflash_dev_online,
|
||
.open = norflash_dev_open,
|
||
.read = norflash_dev_read,
|
||
.write = norflash_dev_write,
|
||
.ioctl = norflash_dev_ioctl,
|
||
.close = norflash_dev_close,
|
||
};
|
||
|
||
|
||
static int norfs_dev_init(const struct dev_node *node, void *arg)
|
||
{
|
||
struct norflash_dev_platform_data *pdata = arg;
|
||
return _norflash_init(node->name, pdata);
|
||
}
|
||
|
||
static int norfs_dev_open(const char *name, struct device **device, void *arg)
|
||
{
|
||
struct norflash_partition *part;
|
||
part = norflash_find_part(name);
|
||
if (!part) {
|
||
log_error("no norflash partition is found\n");
|
||
return -ENODEV;
|
||
}
|
||
*device = &part->device;
|
||
(*device)->private_data = part;
|
||
if (atomic_read(&part->device.ref)) {
|
||
return 0;
|
||
}
|
||
return _norflash_open(arg);
|
||
}
|
||
static int norfs_dev_close(struct device *device)
|
||
{
|
||
return _norflash_close();
|
||
}
|
||
static int norfs_dev_read(struct device *device, void *buf, u32 len, u32 offset)
|
||
{
|
||
int reg;
|
||
/* printf("flash read sector = %d, num = %d\n", offset, len); */
|
||
struct norflash_partition *part;
|
||
part = (struct norflash_partition *)device->private_data;
|
||
if (!part) {
|
||
log_error("norflash partition invalid\n");
|
||
return -EFAULT;
|
||
}
|
||
offset += part->start_addr;
|
||
reg = _norflash_read(offset, buf, len, 0);
|
||
if (reg) {
|
||
r_printf(">>>[r error]:\n");
|
||
len = 0;
|
||
}
|
||
|
||
return len;
|
||
}
|
||
static int norfs_dev_write(struct device *device, void *buf, u32 len, u32 offset)
|
||
{
|
||
/* printf("flash write sector = %d, num = %d\n", offset, len); */
|
||
int reg = 0;
|
||
struct norflash_partition *part = device->private_data;
|
||
if (!part) {
|
||
log_error("norflash partition invalid\n");
|
||
return -EFAULT;
|
||
}
|
||
offset += part->start_addr;
|
||
reg = _norflash_write(offset, buf, len, 0);
|
||
if (reg) {
|
||
r_printf(">>>[w error]:\n");
|
||
len = 0;
|
||
}
|
||
return len;
|
||
}
|
||
static bool norfs_dev_online(const struct dev_node *node)
|
||
{
|
||
return 1;
|
||
}
|
||
static int norfs_dev_ioctl(struct device *device, u32 cmd, u32 arg)
|
||
{
|
||
struct norflash_partition *part = device->private_data;
|
||
if (!part) {
|
||
log_error("norflash partition invalid\n");
|
||
return -EFAULT;
|
||
}
|
||
return _norflash_ioctl(cmd, arg, 1, part);
|
||
}
|
||
|
||
/*
|
||
* 1. 外部调用时以1字节为单位的地址和长度，且驱动write自己不处理擦除，
|
||
* 请使用norfs_dev_ops接口，否则使用本文件内的其他ops。注意：有些文件系
|
||
* 统需要满足这个条件的驱动，如果期望修改成驱动内部处理擦除，需要测试所
|
||
* 有关联的文件系统是否支持，或者新建一个符合需求的ops
|
||
*
|
||
* 2. 如果需要驱动自己处理擦除，需要把宏FLASH_CACHE_ENABLE置1，且
|
||
* norfs_dev_read()里面调用的_norflash_read()的实参cache填1，
|
||
* norfs_dev_write()同理
|
||
*
|
||
* 3. norfs_dev_ops可以被多个设备名注册，每个设备名被认为是不同分区，所以
|
||
* 需要填不同的分区起始地址和大小，若分区地址有重叠或者最大分区结束地址大于
|
||
* flash容量，会触发ASSERT()
|
||
*
|
||
* 4. 关于IOCTL_GET_CAPACITY，有多个分区注册时返回分区的大小，如果只注册了1
|
||
* 个分区，分区起始地址 == 0时返回flash容量，起始地址 != 0时返回分区大小
|
||
* norfs_dev_ops返回的长度以1字节为单位
|
||
*
|
||
* 5. 本文件内的各个ops可以同时使用
|
||
*/
|
||
const struct device_operations norfs_dev_ops = {
|
||
.init = norfs_dev_init,
|
||
.online = norfs_dev_online,
|
||
.open = norfs_dev_open,
|
||
.read = norfs_dev_read,
|
||
.write = norfs_dev_write,
|
||
.ioctl = norfs_dev_ioctl,
|
||
.close = norfs_dev_close,
|
||
};
|
||
|
||
/*
|
||
* 对ops的读写单位有另外需求，或者驱动内部是否支持擦除，可以参照上面的ops，
|
||
* 不同条件自由组合，建立新的ops
|
||
*/
|
||
|
||
#endif
|