* Fixed PPC spin table based on ePAPR 1.1.
* Added flattened device tree (FDT) support. Setting required FDT fields per ePAPR 1.1.
* Added Frame Manager microcode upload.
* Fixed CPLD and setting QE clock.
* Added support for setting logical device numbers and updated device tree.
* Fixed QUICC Engine base address (was incorrect, should be 0x140000).
* Fixed "cpu-release-addr" to use 64-bit value.
* Added secondary cached boot page.
* Added L2 cache support to multi-core.
* Added flattened device tree parser tool for testing (`make fdt-parser` and `tools/fdt-parser/fdt-parser`).
* Added checks for FDT header.
* Added automated test case for NXP T1024 FDT.
* Added DDR4 w/ECC.
* Added L2 and L2 CPC SRAM support
* Added platform SRAM 160KB support
* Added support for core timers (timebase) and platform clock.
* Added IFC driver with erase/write
* Added stage 1 loader to relocate wolfBoot to DDR
* Added CPLD, QUICC, FMAN and MP drivers
* Added eSPI driver for TPM.
* Added hal_early_init instead of calling ddr_init directly.
* Fixes for device tree (DTB) loading with update_ram and PPC boot.
* Fixes for relocating CCSRBAR to upper.
* Fixes for interrupt offsets.
* Fix and refactor the L2SRAM support and use it for stage 1 loader stack.
* Fix NXP eSPI driver to support all sizes and properly handle keeping CS active.
* Added ELF32 and ELF64 loader support (config `ELF=1` or build option `WOLFBOOT_ELF`).
* Add ELF support to `update_ram.c` loader.
* Add support for loading entire flash image to RAM when `EXT_FLASH=1` and `NO_XIP=1` (or `WOLFBOOT_USE_RAMBOOT`).
* Added QUICC Engine support to load microcode and enable.
* Add multiple core support for NXP P1021.
* Fixes to resolve first stage boot ROM relocation.
- Implemented temporary workaround to resolve stack traps.
* Added PPC GOT relocation support.
* Fix for the PPC `isr_empty` handler address.
* Fix to allow stack to use DDR by having assembly setup DDR TLB. After relocating wolfBoot use stack on DDR.
* Cleanup wolfBoot output.
- Only remove extra .bin/.elf created unless `make distclean` is used.
- Don't output the key grep test (only check result).
- Adjust build order (first stage, wolfboot, test app, key, sign test app and factory).
- Fix to make sure linker script is rebuilt before objects.
Sample NXP P1021 Output:
```
Relocating BOOT ROM to DDR
Loading wolfBoot to DDR
Jumping to full wolfBoot
wolfBoot HAL Init
Flash Init: Ret 0, ID 0x76207620
QE: Length 63732, Count 1
QE: uploading 'Microcode for P1021 r1.0' version 0.0.1
QE: Traps 0
MP: Starting core 2 (spin table 0xFFFFF240)
Versions: Boot 1, Update 0
Trying Boot partition at 0x200000
Loading header 512 bytes to 0x1DFFFE00
Loading image 3170724 bytes to 0x1E000000
Image size 3170724
Firmware Valid
Loading elf at 0x1E000000
Found valid elf32 (big endian)
Booting at 0x6000
```
* Fixes for e500 L1/L2 cache.
* Fixes for eLBC and DDR3 drivers on P1021.
* Fixes for LAW and TLB for P1021.
* Fix for the e500v2 core peripheral issues with data barrier / coherency safety.
* Support for SP math all (`SPMATHALL=1`).
* Support for stage 1 loader (`make stage1`).
Daniele Lacamera
David Garske