Add initial implementation of MCUBoot application for Cypress PSOC6 platform
Signed-off-by: Roman Okhrimenko <roman.okhrimenko@cypress.com>
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+### Port of MCUBoot library to be used with Cypress targets
+
+**Solution Description**
+
+Given solution demonstrates operation of MCUBoot on Cypress' PSoC6 device.
+
+There are four applications implemented:
+* MCUBootApp - PSoC6 MCUBoot-based bootloading application;
+* CypressBootloader - PSoC6 MCUBoot-based Cypress' Secure Boot application;
+* SecureBlinkyApp - simple PSoC6 blinking LED application which is a target of BOOT/UPGRADE, running on CM0p and playing a role of SPE;
+* BlinkyApp - simple PSoC6 blinking LED application which is a target of BOOT/UPGRADE;
+
+The default flash map for MCUBootApp implemented is next:
+
+* [0x10000000, 0x10018000] - MCUBootApp (bootloader) area;
+* [0x10018000, 0x10028000] - primary slot for BlinkyApp;
+* [0x10028000, 0x10038000] - secondary slot for BlinkyApp;
+* [0x10038000, 0x10039000] - scratch area;
+
+The flash map is defined through sysflash.h and cy_flash_map.c.
+
+MCUBootApp checks image integrity with SHA256, image authenticity with EC256 digital signature verification and uses completely SW implementation of cryptographic functions based on mbedTLS Library.
+
+**Downloading Solution's Assets**
+
+There is a set assets required:
+
+* MCUBooot Library (root repository)
+* PSoC6 BSP Library
+* PSoC6 Peripheral Drivers Library (PDL)
+* mbedTLS Cryptographic Library
+
+Those are represented as submodules.
+
+To retrieve source code with subsequent submodules pull:
+
+ git clone --recursive http://git-ore.aus.cypress.com/repo/cy_mcuboot_project/cy_mcuboot.git
+
+Submodules can also be updated and initialized separately:
+
+ cd cy_mcuboot
+ git submodule update --init --recursive
+
+
+
+**Building Solution**
+
+This folder contains make files infrastructure for building both MCUBoot Bootloader, CypressBootloader and sample SecureBlinkyApp and BlinkyApp applications used for Bootloader demo functionality.
+
+Instructions on how to build and upload Bootloader and sample image are located in `Readme.md` files in corresponding folders.
+
+Root directory for build is **boot/cypress.**
+
+**Currently supported platforms:**
+
+* PSOC_062_2M - for MCUBoot, BlinkyApp;
+
+* PSOC_064_2M, PSOC_064_1M, PSOC_064_512K - for CypressBootloader, SecureBlinkyApp;
+
+* PSOC_062_2M, PSOC_064_2M, PSOC_064_1M, PSOC_064_512K - for BlinkyApp;
+
+**Build environment troubleshooting:**
+
+Following CLI / IDE are supported for project build:
+
+* Cygwin on Windows systems
+* unix style sheels on *nix systems
+* Eclipse / ModusToolbox ("makefile project from existing source")
+
+*Make* - make sure it is added to system's `PATH` variable and correct path is first in the list;
+
+*Python/Python3* - make sure you have correct path referenced in `PATH`;
+
+*Msys2* - to use systems PATH navigate to msys2 folder, open `msys2_shell.cmd`, uncomment set `MSYS2_PATH_TYPE=inherit`, restart MSYS2 shell.
+
+This will inherit system's PATH so should find `python3.7` installed in regular way as well as imgtool and its dependencies.
+