Lines Matching +full:flash +full:- +full:id

4  * SPDX-License-Identifier: Apache-2.0
26 /* On the Atmel SAM SoC series, the device id is located in the flash
27  * controller. The controller can either present the flash area containing
28  * the code, the unique identifier or the user signature area at the flash
29  * location. Therefore the function reading the device id must be executed
31  * code each time the device id is requested, we do this at boot time at save
32  * the 128-bit value into RAM.
37 	uint8_t *flash = (uint8_t *)CONFIG_FLASH_BASE_ADDRESS;  in hwinfo_sam_read_device_id()  local
40 	/* Switch the flash controller to the unique identifier area. The flash  in hwinfo_sam_read_device_id()
44 	efc->EEFC_FCR = EEFC_FCR_FKEY_PASSWD | EEFC_FCR_FCMD_STUI;  in hwinfo_sam_read_device_id()
45 	while ((efc->EEFC_FSR & EEFC_FSR_FRDY) == EEFC_FSR_FRDY) {  in hwinfo_sam_read_device_id()
49 	/* Copy the 128-bit unique ID. We cannot use memcpy as it would  in hwinfo_sam_read_device_id()
50 	 * execute code from flash.  in hwinfo_sam_read_device_id()
53 		sam_uid[i] = flash[i];  in hwinfo_sam_read_device_id()
56 	/* Switch back the controller to the flash area and wait for it to  in hwinfo_sam_read_device_id()
59 	efc->EEFC_FCR = EEFC_FCR_FKEY_PASSWD | EEFC_FCR_FCMD_SPUI;  in hwinfo_sam_read_device_id()
60 	while ((efc->EEFC_FSR & EEFC_FSR_FRDY) != EEFC_FSR_FRDY) {  in hwinfo_sam_read_device_id()
75 	fmr = efc->EEFC_FMR;  in hwinfo_sam_init()
78 	efc->EEFC_FMR = (fmr & (~EEFC_FMR_CLOE)) | EEFC_FMR_SCOD;  in hwinfo_sam_init()
81 	efc->EEFC_FMR |= EEFC_FMR_SCOD;  in hwinfo_sam_init()
84 	/* Read the device ID using code in RAM */  in hwinfo_sam_init()
88 	efc->EEFC_FMR = fmr;  in hwinfo_sam_init()
90 	/* Re-enable interrupts */  in hwinfo_sam_init()