US 12,223,332 B2
Method for starting-up a device with an embedded multimedia card (eMMC)
Alexander Streit, Offenbach (DE); Klaus Toscher, Solms (DE); and Andreas Weiss, Netphen (DE)
Assigned to Continental Automotive GmbH, Hannover (DE)
Appl. No. 17/764,061
Filed by Continental Automotive GmbH, Hannover (DE)
PCT Filed Sep. 25, 2020, PCT No. PCT/EP2020/076968
§ 371(c)(1), (2) Date Mar. 25, 2022,
PCT Pub. No. WO2021/058777, PCT Pub. Date Apr. 1, 2021.
Claims priority of application No. 10 2019 214 835.2 (DE), filed on Sep. 27, 2019.
Prior Publication US 2022/0342675 A1, Oct. 27, 2022
Int. Cl. G06F 9/4401 (2018.01)
CPC G06F 9/4406 (2013.01) 7 Claims
OG exemplary drawing
 
1. A method for starting-up a device with an embedded multimedia card (eMMC), comprising:
providing power to the device;
putting the eMMC in a Fast-Boot modus for a first duration;
reading a bootloader from the eMMC from a first boot area into a Random-Access Memory (RAM) of the device during the Fast-Boot modus for the first duration of the eMMC;
starting the bootloader in a CPU of the device;
terminating the Fast-Boot modus after the first duration in response to starting the bootloader;
resetting the eMMC after the terminating;
putting the eMMC in the Fast-Boot modus for a second duration after the resetting the eMMC;
initializing hardware by the bootloader, while reading an operating system into the RAM from a second boot area and/or a main data area using Direct Memory Access (DMA); and
starting the operating system from the RAM by the bootloader.