3  * Command for accessing SPI flash.
21 static struct spi_flash *flash;  variable
30  * If it isn't in the flash, the function will fail (return -1).
55 	if (round_up_len && flash->sector_size > 0)  in sf_parse_len_arg()
56 		*len = ROUND(len_arg, flash->sector_size);  in sf_parse_len_arg()
128 	flash = NULL;  in do_spi_flash_probe()
131 		printf("Failed to initialize SPI flash at %u:%u (error %d)\n",  in do_spi_flash_probe()
136 	flash = dev_get_uclass_priv(new);  in do_spi_flash_probe()
138 	if (flash)  in do_spi_flash_probe()
139 		spi_flash_free(flash);  in do_spi_flash_probe()
142 	flash = new;  in do_spi_flash_probe()
145 		printf("Failed to initialize SPI flash at %u:%u\n", bus, cs);  in do_spi_flash_probe()
149 	flash = new;  in do_spi_flash_probe()
156  * Write a block of data to SPI flash, first checking if it is different from
161  * @param flash		flash context pointer
162  * @param offset	flash offset to write
169 static const char *spi_flash_update_block(struct spi_flash *flash, u32 offset,  in spi_flash_update_block()  argument
175 	      offset, flash->sector_size, len);  in spi_flash_update_block()
177 	if (spi_flash_read(flash, offset, flash->sector_size, cmp_buf))  in spi_flash_update_block()
187 	if (spi_flash_erase(flash, offset, flash->sector_size))  in spi_flash_update_block()
190 	if (len != flash->sector_size) {  in spi_flash_update_block()
195 	if (spi_flash_write(flash, offset, flash->sector_size, ptr))  in spi_flash_update_block()
202  * Update an area of SPI flash by erasing and writing any blocks which need
205  * @param flash		flash context pointer
206  * @param offset	flash offset to write
211 static int spi_flash_update(struct spi_flash *flash, u32 offset,  in spi_flash_update()  argument
226 	cmp_buf = memalign(ARCH_DMA_MINALIGN, flash->sector_size);  in spi_flash_update()
231 			todo = min_t(size_t, end - buf, flash->sector_size);  in spi_flash_update()
239 			err_oper = spi_flash_update_block(flash, offset, todo,  in spi_flash_update()
248 		printf("SPI flash failed in %s step\n", err_oper);  in spi_flash_update()
278 			     &maxsize, MTD_DEV_TYPE_NOR, flash->size))  in do_spi_flash_read_write()
282 	if (offset + len > flash->size) {  in do_spi_flash_read_write()
283 		printf("ERROR: attempting %s past flash size (%#x)\n",  in do_spi_flash_read_write()
284 		       argv[0], flash->size);  in do_spi_flash_read_write()
295 		ret = spi_flash_update(flash, offset, len, buf);  in do_spi_flash_read_write()
302 			ret = spi_flash_read(flash, offset, len, buf);  in do_spi_flash_read_write()
304 			ret = spi_flash_write(flash, offset, len, buf);  in do_spi_flash_read_write()
330 			MTD_DEV_TYPE_NOR, flash->size))  in do_spi_flash_erase()
338 	if (offset + size > flash->size) {  in do_spi_flash_erase()
339 		printf("ERROR: attempting %s past flash size (%#x)\n",  in do_spi_flash_erase()
340 		       argv[0], flash->size);  in do_spi_flash_erase()
344 	ret = spi_flash_erase(flash, offset, size);  in do_spi_flash_erase()
377 	ret = spi_flash_protect(flash, start, len, prot);  in do_spi_protect()
430  * Run a test on the SPI flash
432  * @param flash		SPI flash to use
435  * @param offset	Offset within flash to check
439 static int spi_flash_test(struct spi_flash *flash, uint8_t *buf, ulong len,  in spi_flash_test()  argument
445 	printf("SPI flash test:\n");  in spi_flash_test()
449 	if (spi_flash_erase(flash, offset, len)) {  in spi_flash_test()
455 	if (spi_flash_read(flash, offset, len, vbuf)) {  in spi_flash_test()
469 	if (spi_flash_write(flash, offset, len, buf)) {  in spi_flash_test()
476 	if (spi_flash_read(flash, offset, len, vbuf)) {  in spi_flash_test()
532 	ret = spi_flash_test(flash, buf, len, offset, vbuf);  in do_spi_flash_test()
572 		ret = spi_flash_ctrl_wlock(flash, (u32)offset, (size_t)len);  in do_spi_flash_ctrl_wlock()
574 		ret = spi_flash_ctrl_wunlock(flash, (u32)offset, (size_t)len);  in do_spi_flash_ctrl_wlock()
600 	if (!flash) {  in do_spi_flash()
601 		puts("No SPI flash selected. Please run `sf probe'\n");  in do_spi_flash()
640 	"SPI flash sub-system",
641 	"probe [[bus:]cs] [hz] [mode]	- init flash device on given SPI bus\n"
647 	"				          at `addr' to flash at `offset'\n"
653 	"					  at `addr' to flash at `offset'\n"