107 	uint32_t val = 0;  in xor_compute()  local
111 		val = val ^ *(uint32_t *)(ptr + i);  in xor_compute()
113 	return val;  in xor_compute()
116 static uint8_t xor_factorize(uint32_t val)  in xor_factorize()  argument
118 	return (uint8_t)((val & 0xff) ^ ((val >> 8) & 0xff) ^ ((val >> 16) & 0xff) ^ ((val >> 24) & 0xff));  in xor_factorize()
124 	uint32_t val;  in xor_update()  local
128 		val = xor_compute(ptr + i * BOOT_UMIP_SECTOR_SIZE, BOOT_UMIP_SECTOR_SIZE);  in xor_update()
129 		*(uint32_t *)(ptr + 4 * i) = val;  in xor_update()
134 	val= xor_compute(ptr, BOOT_UMIP_SIZE);  in xor_update()
135 	*(ptr + BOOT_UMIP_XOR_OFFSET) = xor_factorize(val);  in xor_update()
139 	val= xor_compute(ptr, BOOT_IFWI_SIZE);  in xor_update()
140 	*(uint32_t *)(ptr + BOOT_IFWI_XOR_OFFSET) = val;  in xor_update()