diff --git a/WP_NOTES.md b/WP_NOTES.md
index 25fcbdec..5ff46a78 100644
--- a/WP_NOTES.md
+++ b/WP_NOTES.md
@@ -1,6 +1,6 @@
 Flashrom was passed to flashprog under https://github.com/linuxboot/heads/pull/1769
 
-Thoe are notes for @i-c-o-n and others wanting to move WP forward but track issues and users
+Those are notes for @i-c-o-n and others wanting to move WP forward but track issues and users
 
 The problem with WP is that it is desired but even if partial write protection regions is present, WP is widely unused.
 
@@ -13,5 +13,10 @@ Some random notes since support is incomplete (depends on chips, really)
    - Documented https://docs.dasharo.com/variants/asus_kgpe_d16/spi-wp/
   - WP still unused
 
+Alternative, as suggested by @i-c-o-n is Chipset Platform Locking (PR0) which is enforced at platform's chipset level for a boot
+- This is implemented and enforced on <= Haswell from this PR merged : https://github.com/linuxboot/heads/pull/1373
+- Non-upstreamed work has been made from @root-hardenedvault work in vaultboot downstream fork of Heads at https://github.com/hardenedvault/vaultboot/blob/master/patches/coreboot/0001-x11.patch
+- Discussion point under flashrom-> flashprog PR under https://github.com/linuxboot/heads/pull/1769/files/f8eb0a27c3dcb17a8c6fcb85dd7f03e8513798ae#r1752395865 tagging @i-c-o-n
+
 
 Not sure what is the way forward here, but lets keep this file in tree to track improvements over time.