TI AM64x port on the cortex-r5

[twcook86]

TI AM64x port, based on the TI MCU Plus SDK 11.02, running on one of the cortex-r5's.

See wolfSSL/wolfssl#11121 for the corresponding wolfCrypt support.

Draft pull request, while I finish up a few lingering items...

• Flash write support
• Documentation/Readme's

[wolfSSL-Fenrir-bot]

Fenrir Automated Review — PR #849

Scan targets checked: wolfboot-src, wolfboot-bugs
Coverage: 3 of 7 in-scope changed file(s) opened by the reviewer; not opened: include/user_settings.h, src/elf.c, src/update_flash.c, test-app/app_ti_am64x_r5.c

Findings: 2
2 finding(s) posted as inline comments (see file-level comments below)

This review was generated automatically by Fenrir. Reported findings require changes before merge.

Review tier: Lite

[wolfSSL-Fenrir-bot]

Fenrir Automated Review — PR #849

Scan targets checked: wolfboot-src, wolfboot-bugs
Coverage: 2 of 7 in-scope changed file(s) opened by the reviewer; not opened: include/user_settings.h, src/elf.c, src/image.c, src/update_flash.c, test-app/app_ti_am64x_r5.c

Fenrir result: Approved ✅

No new issues found in the changed files.

Advisory only — this automated result does not count as a GitHub approval.

Review tier: Lite

Fenrir's latest completed scan found no issues; clearing the prior automated change request.

[Copilot]

Copilot review overview

🔵 Needs a closer look

Boot, flash, and crypto behavior needs hardware validation, and unresolved build issues remain.

Review effort: Balanced
Findings: 3 · 7 · 3

Open (13)

• Remove unsupported TI target from CMake · New
• Gate SA2UL completion on receiving all input bytes · New
• Preserve flash lookup and erase failures · New
• Serialize and track SysConfig generation dependencies · New
• Align size reporting with scatter output selection · New
• Handle failed RNG initialization before RNG_read · New
• Serialize test-app SysConfig generation · New
• Check ELF_FLASH_SCATTER explicitly for value 1 · New
• Add squashelf prerequisite for TI test-app builds · New
• Track AM64x benchmark timer reset origin · New
• Invoke the prepared SDK component script path · New
• Use the correct AM64x R5 configuration · New
• Replace LPC55S69 flashing steps with AM64x instructions · New

What changed in this PR

This draft adds a TI AM64x Cortex-R5 port to wolfBoot, including SDK-based boot and test-app builds.

Changes:

• Adds the AM64x HAL, linker scripts, and SDK configuration.
• Adds test-app support and adjusts ELF image handling.
• Adds target documentation and build-system entries.

File	Description
test-app/​wolfcrypt_support.c	Adds AM64x timing hooks.
test-app/​Makefile	Adds SDK sources and image packaging.
test-app/​ARM-ti_am64x_r5.ld	Defines application memory layout.
test-app/​app_ti_am64x_r5.c	Adds the demo application.
src/​update_flash.c	Gates ELF diagnostic output.
src/​image.c	Gates ELF diagnostic output.
src/​elf.c	Gates ELF diagnostic output.
options.mk	Adjusts AM64x debug flags.
Makefile	Adds SysConfig and ROM image generation.
include/​user_settings.h	Adds AM64x wolfCrypt settings.
hal/​ti_am64x_r5.ld	Defines bootloader memory layout.
hal/​ti_am64x_r5.c	Adds flash, entropy, and boot hooks.
docs/​Targets.md	Adds AM6442 target guidance.
config/​examples/​ti-am64x-r5/​ti-am64x-r5_test-app.syscfg	Configures application peripherals.
config/​examples/​ti-am64x-r5/​ti-am64x-r5_hal.syscfg	Configures bootloader peripherals.
config/​examples/​ti-am64x-r5/​mcuplussdk_11.02.00_sa2ul.c.patch	Patches the SDK crypto driver.
config/​examples/​ti-am64x-r5.config	Provides a target build configuration.
CMakeLists.txt	Lists the target for CMake.
arch.mk	Adds the TI toolchain and SDK objects.
.gitignore	Ignores generated output.

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