boot/cypress/platforms/XMC7000.md

## XMC7000 boot configuration description
MCUBoot application supports `overwrite` and `swap` upgrade modes for XMC7200 and XMC7100 platforms.

Following commands can be used as an example to build a project
- Overwrite mode

    make clean app APP_NAME=MCUBootApp PLATFORM=XMC7200 BUILDCFG=Debug FLASH_MAP=platforms/memory/XMC7000/flashmap/xmc7000_overwrite_single.json PLATFORM_CONFIG=platforms/memory/XMC7000/flashmap/xmc7200_platform.json CORE=CM0P APP_CORE=CM7 APP_CORE_ID=0

    make clean_boot app APP_NAME=BlinkyApp PLATFORM=XMC7200 BUILDCFG=Debug FLASH_MAP=platforms/memory/XMC7000/flashmap/xmc7000_overwrite_single.json PLATFORM_CONFIG=platforms/memory/XMC7000/flashmap/xmc7200_platform.json CORE=CM7 CORE_ID=0 IMG_TYPE=BOOT IMG_ID=1

    make clean_upgrade app APP_NAME=BlinkyApp PLATFORM=XMC7200 BUILDCFG=Debug FLASH_MAP=platforms/memory/XMC7000/flashmap/xmc7000_overwrite_single.json PLATFORM_CONFIG=platforms/memory/XMC7000/flashmap/xmc7200_platform.json CORE=CM7 CORE_ID=0 IMG_TYPE=UPGRADE IMG_ID=1

- Swap mode

    make clean app APP_NAME=MCUBootApp PLATFORM=XMC7200 BUILDCFG=Debug FLASH_MAP=platforms/memory/XMC7000/flashmap/xmc7000_swap_single.json PLATFORM_CONFIG=platforms/memory/XMC7000/flashmap/xmc7200_platform.json CORE=CM0P APP_CORE=CM7 APP_CORE_ID=0

    make clean_boot app APP_NAME=BlinkyApp PLATFORM=XMC7200 BUILDCFG=Debug FLASH_MAP=platforms/memory/XMC7000/flashmap/xmc7000_swap_single.json PLATFORM_CONFIG=platforms/memory/XMC7000/flashmap/xmc7200_platform.json CORE=CM7 CORE_ID=0 IMG_TYPE=BOOT IMG_ID=1

    make clean_upgrade app APP_NAME=BlinkyApp PLATFORM=XMC7200 BUILDCFG=Debug FLASH_MAP=platforms/memory/XMC7000/flashmap/xmc7000_swap_single.json PLATFORM_CONFIG=platforms/memory/XMC7000/flashmap/xmc7200_platform.json CORE=CM7 CORE_ID=0 IMG_TYPE=UPGRADE IMG_ID=1

Build parameters description:
`

## XMC7000 Secure boot configuration description
XMC7000 internal flash boot module can be used in secure configuration.
A complete description and instructions for configuring a secure boot can be found in reference manual `AN234802`.

MCUBoot makefile supports secure image build configuration for XMC7200 and XMC7100 devices.
To prepare a secure MCUBoot image, the user must configure the public key and specify the appropriate parameters for the TOC2 structure in the `cy_si_config.c`, `cy_si_key.c` files and execute the make command with the additional variables `USE_SECURE_MODE=1`, `SECURE_MODE_KEY_NAME=<name>`.

- Step to generate custom RSA2048 keys:
    cysecuretools -t xmc7200 create-key --key-type RSA2048 -o ./keys/cypress-test-rsa2k.pem ./keys/cypress-test-rsa2k.pub --format PEM

- Step to generate `cy_si_key.c` file:
    cysecuretools convert-key -k ./keys/cypress-test-rsa2k.pub -o ./platforms/utils/XMC7000/cy_si_key.c --fmt secure_boot --endian little

Previous two steps can be executed with single Makefile command.
    make gen_secure_cfgs PLATFORM=XMC7200 SECURE_MODE_KEY_TYPE=RSA2048 KEY_NAME=cypress-test-rsa2k

- Step to run MCUBootApp build with secure flash boot config
    make clean app APP_NAME=MCUBootApp PLATFORM=XMC7200 BUILDCFG=Debug FLASH_MAP=platforms/memory/XMC7000/flashmap/xmc7000_overwrite_single.json PLATFORM_CONFIG=platforms/memory/XMC7000/flashmap/xmc7200_platform.json CORE=CM0P APP_CORE=CM7 APP_CORE_ID=0 USE_SECURE_MODE=1 SECURE_MODE_KEY_NAME=cypress-test-rsa2k

- Example how to configure openocd script:

    set QSPI_FLASHLOADER platforms/BSP/XMC7000/CAT1C_SMIF.FLM
    source [find interface/kitprog3.cfg]
    set ENABLE_ACQUIRE 0
    set ACQUIRE_TIMEOUT 2000

    transport select swd
    source [find target/cat1c.cfg]
    cat1c sflash_restrictions 1

    targets

    init; reset init;

    flash erase_address     0x17007C00              0x00000200
    flash erase_address     0x17006400              0x00000C00

    program `./MCUBootApp/out/XMC7200/Debug/MCUBootApp.hex`

    resume;
    reset;
    shutdown