Update for 2020.07

Signed-off-by: David Abdurachmanov <david.abdurachmanov@sifive.com>

README.md

@@ -42,7 +42,7 @@ 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 2020.06 -m tools/manifests/sifive.xml
+repo init -u git://github.com/sifive/meta-sifive -b 2020.07 -m tools/manifests/sifive.xml
 repo sync
 ```
 

ReleaseNotes/2020.07.md

@@ -0,0 +1,33 @@
+# Release Notes for 2020.07
+
+This release includes major changes compared previous Freedom Unleashed SDK and thus is **experimental** at this stage. Main changes include:
+
+- All layers (openembedded-core, meta-openembedded, meta-riscv) updated to their latest revisions.
+
+- Kernel updated to v5.7.7.
+
+- U-Boot updated to v2020.07-rc5.
+
+- OpenSBI updated to v0.8.
+
+- stress-ng updated to 0.11.14.
+
+- Mesa updated to 20.0.3.
+
+- jq package was added.
+
+- LLVM updated to a newer revision (not final 10.0.1).
+
+- Backport 3 vDSO fixes from upstream.
+
+- Updated kernel configuration to incl. more I2C related features (/dev/i2c-0 exist and i2cdetect detects it).
+
+- haveged updated to 1.9.13 (solves cyclic dependency issue with systemd at boot time).
+
+## 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. PWM LEDs cause kernel hang at boot time thus udev rules to enable them are disabled.