Update for 2021.03 release

Signed-off-by: David Abdurachmanov <[email protected]>

README.md

@@ -4,7 +4,7 @@ The new experimental Freedom Unleashed (FU) SDK is based on OpenEmbedded (OE). I
 
 - build predefined disk images for QEMU, [SiFive HiFive Unleashed](https://www.sifive.com/boards/hifive-unleashed) development board (incl. [HiFive Unleashed Expansion Board](https://www.crowdsupply.com/microsemi/hifive-unleashed-expansion-board) from Microsemi) and [SiFive HiFive Unmatched](https://www.sifive.com/boards/hifive-unmatched);
 	+ __Note__: We are deprecating support for HiFive Unleashed Expansion board from Microsemi, and future releases will remove support for it from SiFive OpenEmbedded layer (i.e. [meta-sifive](https://github.com/sifive/meta-sifive)). If you have the expansion board we advice you to switch to [Microchip PolarFire SoC Yocto BSP](https://github.com/polarfire-soc/meta-polarfire-soc-yocto-bsp/) which includes support for MPFS-DEV-KIT (HiFive Unleashed Expansion Board) directly from the manufacturer. You are also welcome to use older releases (2021.02.00 or older) from SiFive OpenEmbedded layer.
-	+ __Note:__  2021.02.00 release introduces the support for the SiFive HiFive Unmatched board __(pre-production 8GB variant)__. Contact your SiFive representative before using disk images built for `unmatched` machine on your particular board. If you received the final board (16GB) via Mouser or CrowdSupply you should skip 2021.02.00 release.
+	+ __Note:__  2021.02.00 release introduces the support for the SiFive HiFive Unmatched board __(pre-production 8GB variant)__. Contact your SiFive representative before using disk images built for `unmatched` machine on your particular board. If you received the __final board (16GB) variant__ via Mouser or CrowdSupply you should skip 2021.02.00 release and use 2021.03.00 (or newer).
 - build custom disk images with additional software packages from various third-party OE layers;
 - quickly launch QEMU VM instance with your built disk image;
 - build bootloader binaries (OpenSBI, U-Boot, U-Boot SPL);
@@ -34,7 +34,7 @@ This needs to be done every time you want a clean setup based on the latest laye
 
 ```bash
 mkdir riscv-sifive && cd riscv-sifive
-repo init -u git://github.com/sifive/meta-sifive -b 2021.02 -m tools/manifests/sifive.xml
+repo init -u git://github.com/sifive/meta-sifive -b 2021.03 -m tools/manifests/sifive.xml
 repo sync
 ```
 
@@ -122,11 +122,11 @@ By default disk images do not include debug packages. If you want to produce dis
 
 There are two machine targets currently tested:
 
-- `qemuriscv64` - RISC-V 64-bit (RV64GC) for QEMU virt machine;
+- `qemuriscv64` - RISC-V 64-bit (RV64GC) for QEMU virt machine.
 
 - `freedom-u540` - SiFive HiFive Unleashed development board with or without HiFive Unleashed Expansion Board from Microsemi.
 
-- `unmatched` - SiFive HiFive Unmatched development board (__Only for pre-production 8GB variant__. Contact your SiFive representative before using disk images built for `unmatched` machine.)
+- `unmatched` - SiFive HiFive Unmatched development board.
 
 > It's not possible to use disk images built for `freedom-u540` with QEMU 4.0 and instructions provided below.
 > 

ReleaseNotes/2021.03.md

@@ -0,0 +1,33 @@
+# Release Notes for 2021.03
+
+This release includes major changes compared previous Freedom Unleashed SDK and thus is **experimental** at this stage. The main changes include:
+
+- All layers (openembedded-core, meta-openemedded, meta-riscv, meta-clang) were updated to their latest revisions.
+- **unmatched** MACHINE was updated to support 16GB (rev3) variant. Older versions of unmatched (i.e., pre-production) should use 2021.02.00 release.
+- stress-ng was updated to 0.12.05.
+- Kernel was updated to v5.11.5.
+- U-Boot was updated to add PWM command, I2C EEPROM and 16GB DDR parameters for Unmatched (rev3).
+- rngd (from rng-tools) daemon was disabled by default.
+- libinput was updated to 1.17.0.
+- New packages were added in CLI and Xfce4 disk images:
+	+ cpupower
+	+ libubootenv-bin
+	+ u-boot-tools-mkimage
+	+ u-boot-tools-mkenvimage
+- New packages were added in Xfce4 disk images:
+	+ xeyes
+	+ xev
+	+ xwininfo
+	+ xvinfo
+	+ x11perf
+- Fixed a bug where OpenSBI binaries might not be deployed before U-Boot starts building.
+
+## Known Issues
+
+1. Avoid overclocking SoC using CPUFreq if you are using HiFive Unleashed Expansion Board from Microsemi as this will hang the board. Hard reset will be required.
+
+2. If Xfce4 desktop disk image is used with HiFive Unleashed Expansion Board and GPU then rebooting is required after the 1st boot.
+
+3. Newer OE/Yocto buildtools could cause build issues for `nspr-native` package. Use `-r yocto-3.2_M2 -t 20200729` as described in README file if you are using OE/Yocto buildtools. See Yocto bug [#14112](https://bugzilla.yoctoproject.org/show_bug.cgi?id=14112)
+
+4. We have found an issue with SanDisk "A2" microSD cards and thus do not recommend them.