Lup Yuen Lee 李立源 @lupyuen@qoto.org

Matching the #BL602 Bootloader Code ... With the Partition Table that's flashed to BL602 🤔

https://github.com/lupyuen/bl_iot_sdk/blob/master/customer_app/bl602_boot2/bl602_boot2/blsp_boot2.c#L226-L269

"Exploring the role of trauma in underpinning sexualised drug use (‘chemsex’) among gay, bisexual and other men who have sex with men in Singapore"

https://www.academia.edu/49082666/Exploring_the_role_of_trauma_in_underpinning_sexualised_drug_use_chemsex_among_gay_bisexual_and_other_men_who_have_sex_with_men_in_Singapore

#PinePhone: "How can non-techies support the progress?"

https://www.reddit.com/r/PINE64official/comments/npbij8/how_can_nontechies_support_the_progress/?utm_medium=android_app&utm_source=share

"Where is C++ used in #Embedded Systems"

https://www.reddit.com/r/embedded/comments/np0bcw/where_is_c_used_in_embedded_systems/?utm_medium=android_app&utm_source=share

"America’s Medical System Has a Long History of Relying on Filipino Nurses to Fight on the Frontlines"

https://time.com/6051754/history-filipino-nurses-us/

"What Oxford taught me about posh people"

https://unherd.com/2021/05/what-oxford-taught-me-about-posh-people/

Where does #BL602 Bootloader get the AES Encryption Key? From the eFuse Hardware!

https://github.com/lupyuen/bl_iot_sdk/blob/master/customer_app/bl602_boot2/bl602_boot2/blsp_port.c#L184-L209

#BL602 Bootloader writes Application Firmware to XIP Flash Memory

https://github.com/lupyuen/bl_iot_sdk/blob/master/customer_app/bl602_boot2/bl602_boot2/blsp_boot2.c#L226-L269

#BL602 Bootloader installs the Application Firmware

https://github.com/lupyuen/bl_iot_sdk/blob/master/customer_app/bl602_boot2/bl602_boot2/blsp_boot2.c#L271-L313

How #BL602 Bootloader starts the Application Firmware

https://github.com/lupyuen/bl_iot_sdk/blob/master/customer_app/bl602_boot2/bl602_boot2/blsp_boot2.c#L509-L571

#BL602 Bootloader installs the Application Firmware ... With eFuse Protection (optional)

https://github.com/lupyuen/bl_iot_sdk/blob/master/customer_app/bl602_boot2/bl602_boot2/blsp_boot2.c#L381-L507

Quick check of #BL602 Boot2 Disassembly ... To be sure that it matches the Boot2 Bootloader that we have been flashing to BL602. Great exercise for learning #RISCV Assembly! 👍

https://github.com/lupyuen/bl_iot_sdk/releases/download/v8.0.2/bl602_boot2.S

A smart home consumer's wish list

https://raymondjulin.com/blog/a-smart-home-consumers-wish-list

MyCobot robotic arm is offered with Raspberry Pi 4 or M5Stack ESP32 modules

https://www.cnx-software.com/2021/05/30/mycobot-robotic-arm-is-offered-with-raspberry-pi-4-or-m5stack-esp32-modules/

"She memorised IBM typewriter codes for 5,400 Chinese characters but couldn’t save tech giant’s ill-fated machine"

https://www.scmp.com/magazines/post-magazine/long-reads/article/3135053/she-memorised-ibm-typewriter-codes-5400-chinese

"Best #embedded device to learn #RustLang?"

https://www.reddit.com/r/embedded/comments/noa0rs/best_embedded_device_to_learn_rust/?utm_medium=android_app&utm_source=share

"I lost millions through #cryptocurrency addiction"

https://www.bbc.com/news/uk-scotland-57268024

When #BL602 boots, it runs the Boot2 Bootloader Firmware at 0x2300 0000 ... Which loads the Application Firmware into (yikes!) 0x2300 0000 ... Let's investigate how the Bootloader makes this self-overlay possible

https://github.com/lupyuen/bl_iot_sdk/blob/master/tools/flash_tool/bl602/builtin_imgs/blsp_boot2.map#L6884

#BL602 Linker Map shows Boot2 Code is always loaded at 0x2300 0300 ... Let's find out what's inside

https://github.com/lupyuen/bl_iot_sdk/releases/download/v8.0.1/sdk_app_blinky.map

My hunch: #BL602 Boot2 and ESP32 Secure Boot V2 have similar bootloader features 🤔

https://docs.espressif.com/projects/esp-idf/en/latest/esp32/security/secure-boot-v2.html