diff --git a/.gitignore b/.gitignore
index d9ca023fe..9c32299fd 100644
--- a/.gitignore
+++ b/.gitignore
@@ -20,94 +20,6 @@ target/
 *dbg.j2
 *.img
 
-# Subdirectories in src
-src/bash/*
-!src/bash/Makefile
-src/dhcpmon/debian/*
-!src/dhcpmon/debian/changelog 
-!src/dhcpmon/debian/compat 
-!src/dhcpmon/debian/control
-!src/dhcpmon/debian/rules 
-src/ixgbe/*
-!src/ixgbe/Makefile
-src/isc-dhcp/*
-!src/isc-dhcp/Makefile
-!src/isc-dhcp/patch
-src/socat/*
-!src/socat/Makefile
-!src/socat/*.patch
-src/tacacs/*
-src/tacacs/nsm/*
-src/tacacs/pam/*
-!src/tacacs/nsm/Makefile
-!src/tacacs/nsm/*.patch
-!src/tacacs/pam/Makefile
-!src/tacacs/pam/*.patch
-src/hiredis/*
-!src/hiredis/Makefile
-src/igb/*
-!src/igb/Makefile
-src/initramfs-tools/*
-!src/initramfs-tools/Makefile
-src/iproute2/*
-!src/iproute2/Makefile
-src/isc-dhcp/*
-!src/isc-dhcp/Makefile
-!src/isc-dhcp/patch/
-src/libnl3/*
-!src/libnl3/debian
-src/libnl3/debian/libnl-*/
-!src/libnl3/Makefile
-src/libteam/*
-!src/libteam/Makefile
-src/libyang/*
-!src/libyang/Makefile
-src/lldpd/*
-!src/lldpd/Makefile
-!src/lldpd/patch/
-src/lm-sensors/*
-!src/lm-sensors/Makefile
-src/monit/*
-!src/monit/Makefile
-!src/monit/patch/
-src/mpdecimal/*
-!src/mpdecimal/Makefile
-src/python-click/*
-!src/python-click/Makefile
-src/python3/*
-!src/python3/Makefile
-src/radvd/*
-!src/radvd/Makefile
-!src/radvd/patch/
-src/redis/*
-!src/redis/Makefile
-src/smartmontools/*
-!src/smartmontools/Makefile
-src/snmpd/*
-!src/snmpd/Makefile
-src/sonic-device-data/src/device/
-src/sonic-device-data/src/debian/
-src/supervisor/*
-!src/supervisor/Makefile
-!src/supervisor/patch/
-src/swig/*
-!src/swig/Makefile
-src/systemd-sonic-generator/systemd-sonic-generator
-src/systemd-sonic-generator/debian/*
-!src/systemd-sonic-generator/debian/changelog
-!src/systemd-sonic-generator/debian/compat
-!src/systemd-sonic-generator/debian/control
-!src/systemd-sonic-generator/debian/rules
-src/telemetry/debian/*
-!src/telemetry/debian/changelog
-!src/telemetry/debian/compat
-!src/telemetry/debian/control
-!src/telemetry/debian/rules
-!src/telemetry/debian/telemetry.init.d
-src/thrift/*
-!src/thrift/patch/
-!src/thrift/Makefile
-
 # Autogenerated Dockerfiles
 sonic-slave*/Dockerfile
 dockers/*/Dockerfile
@@ -125,6 +37,8 @@ src/sonic-daemon-base/build
 src/sonic-daemon-base/sonic_daemon_base.egg-info
 
 # Misc. files
+asic_config_checksum
+files/Aboot/boot0
 files/initramfs-tools/arista-convertfs
 files/initramfs-tools/union-mount
 
diff --git a/platform/broadcom/saibcm-modules/.gitignore b/platform/broadcom/saibcm-modules/.gitignore
index 338005f50..f2e54da55 100644
--- a/platform/broadcom/saibcm-modules/.gitignore
+++ b/platform/broadcom/saibcm-modules/.gitignore
@@ -2,3 +2,9 @@
 *.debhelper
 *.substvars
 *.ko
+
+build-arch-stamp
+build/
+configure-stamp
+debian/files
+debian/opennsl-modules/
diff --git a/platform/broadcom/sonic-platform-modules-dell/.gitignore b/platform/broadcom/sonic-platform-modules-dell/.gitignore
index 7f287d538..f62ae4876 100644
--- a/platform/broadcom/sonic-platform-modules-dell/.gitignore
+++ b/platform/broadcom/sonic-platform-modules-dell/.gitignore
@@ -48,3 +48,6 @@ dkms.conf
 *.postrm.debhelper
 *.prerm.debhelper
 *.substvars
+
+# Cloned source repositories
+tools/flashrom/
diff --git a/src/bash/.gitignore b/src/bash/.gitignore
new file mode 100644
index 000000000..a0991ff44
--- /dev/null
+++ b/src/bash/.gitignore
@@ -0,0 +1,3 @@
+*
+!.gitignore
+!Makefile
diff --git a/src/dhcpmon/.gitignore b/src/dhcpmon/.gitignore
new file mode 100644
index 000000000..9d09ae6b3
--- /dev/null
+++ b/src/dhcpmon/.gitignore
@@ -0,0 +1,5 @@
+debian/*
+!debian/changelog
+!debian/compat
+!debian/control
+!debian/rules
diff --git a/src/hiredis/.gitignore b/src/hiredis/.gitignore
new file mode 100644
index 000000000..a0991ff44
--- /dev/null
+++ b/src/hiredis/.gitignore
@@ -0,0 +1,3 @@
+*
+!.gitignore
+!Makefile
diff --git a/src/ifupdown2/.gitignore b/src/ifupdown2/.gitignore
new file mode 100644
index 000000000..d1cfec62d
--- /dev/null
+++ b/src/ifupdown2/.gitignore
@@ -0,0 +1 @@
+ifupdown2-1.2.8-1/
diff --git a/src/initramfs-tools/.gitignore b/src/initramfs-tools/.gitignore
new file mode 100644
index 000000000..a0991ff44
--- /dev/null
+++ b/src/initramfs-tools/.gitignore
@@ -0,0 +1,3 @@
+*
+!.gitignore
+!Makefile
diff --git a/src/iproute2/.gitignore b/src/iproute2/.gitignore
new file mode 100644
index 000000000..a0991ff44
--- /dev/null
+++ b/src/iproute2/.gitignore
@@ -0,0 +1,3 @@
+*
+!.gitignore
+!Makefile
diff --git a/src/iptables/.gitignore b/src/iptables/.gitignore
new file mode 100644
index 000000000..d19db76ab
--- /dev/null
+++ b/src/iptables/.gitignore
@@ -0,0 +1,4 @@
+*
+!.gitignore
+!Makefile
+!patch/
diff --git a/src/isc-dhcp/.gitignore b/src/isc-dhcp/.gitignore
new file mode 100644
index 000000000..d19db76ab
--- /dev/null
+++ b/src/isc-dhcp/.gitignore
@@ -0,0 +1,4 @@
+*
+!.gitignore
+!Makefile
+!patch/
diff --git a/src/ixgbe/.gitignore b/src/ixgbe/.gitignore
new file mode 100644
index 000000000..a0991ff44
--- /dev/null
+++ b/src/ixgbe/.gitignore
@@ -0,0 +1,3 @@
+*
+!.gitignore
+!Makefile
diff --git a/src/kdump-tools/.gitignore b/src/kdump-tools/.gitignore
new file mode 100644
index 000000000..d19db76ab
--- /dev/null
+++ b/src/kdump-tools/.gitignore
@@ -0,0 +1,4 @@
+*
+!.gitignore
+!Makefile
+!patch/
diff --git a/src/libnl3/.gitignore b/src/libnl3/.gitignore
new file mode 100644
index 000000000..906fc0b87
--- /dev/null
+++ b/src/libnl3/.gitignore
@@ -0,0 +1,5 @@
+*
+!.gitignore
+!debian/
+debian/libnl-*/
+!Makefile
diff --git a/src/libteam/.gitignore b/src/libteam/.gitignore
new file mode 100644
index 000000000..a0991ff44
--- /dev/null
+++ b/src/libteam/.gitignore
@@ -0,0 +1,3 @@
+*
+!.gitignore
+!Makefile
diff --git a/src/libyang/.gitignore b/src/libyang/.gitignore
new file mode 100644
index 000000000..a0991ff44
--- /dev/null
+++ b/src/libyang/.gitignore
@@ -0,0 +1,3 @@
+*
+!.gitignore
+!Makefile
diff --git a/src/lldpd/.gitignore b/src/lldpd/.gitignore
new file mode 100644
index 000000000..d19db76ab
--- /dev/null
+++ b/src/lldpd/.gitignore
@@ -0,0 +1,4 @@
+*
+!.gitignore
+!Makefile
+!patch/
diff --git a/src/lm-sensors/.gitignore b/src/lm-sensors/.gitignore
new file mode 100644
index 000000000..a0991ff44
--- /dev/null
+++ b/src/lm-sensors/.gitignore
@@ -0,0 +1,3 @@
+*
+!.gitignore
+!Makefile
diff --git a/src/monit/.gitignore b/src/monit/.gitignore
new file mode 100644
index 000000000..d19db76ab
--- /dev/null
+++ b/src/monit/.gitignore
@@ -0,0 +1,4 @@
+*
+!.gitignore
+!Makefile
+!patch/
diff --git a/src/mpdecimal/.gitignore b/src/mpdecimal/.gitignore
new file mode 100644
index 000000000..a0991ff44
--- /dev/null
+++ b/src/mpdecimal/.gitignore
@@ -0,0 +1,3 @@
+*
+!.gitignore
+!Makefile
diff --git a/src/python-click/.gitignore b/src/python-click/.gitignore
new file mode 100644
index 000000000..a0991ff44
--- /dev/null
+++ b/src/python-click/.gitignore
@@ -0,0 +1,3 @@
+*
+!.gitignore
+!Makefile
diff --git a/src/python3/.gitignore b/src/python3/.gitignore
new file mode 100644
index 000000000..a0991ff44
--- /dev/null
+++ b/src/python3/.gitignore
@@ -0,0 +1,3 @@
+*
+!.gitignore
+!Makefile
diff --git a/src/radvd/.gitignore b/src/radvd/.gitignore
new file mode 100644
index 000000000..d19db76ab
--- /dev/null
+++ b/src/radvd/.gitignore
@@ -0,0 +1,4 @@
+*
+!.gitignore
+!Makefile
+!patch/
diff --git a/src/redis/.gitignore b/src/redis/.gitignore
new file mode 100644
index 000000000..a0991ff44
--- /dev/null
+++ b/src/redis/.gitignore
@@ -0,0 +1,3 @@
+*
+!.gitignore
+!Makefile
diff --git a/src/sflow/hsflowd/.gitignore b/src/sflow/hsflowd/.gitignore
new file mode 100644
index 000000000..d19db76ab
--- /dev/null
+++ b/src/sflow/hsflowd/.gitignore
@@ -0,0 +1,4 @@
+*
+!.gitignore
+!Makefile
+!patch/
diff --git a/src/sflow/psample/.gitignore b/src/sflow/psample/.gitignore
new file mode 100644
index 000000000..eec3a10fb
--- /dev/null
+++ b/src/sflow/psample/.gitignore
@@ -0,0 +1,8 @@
+*
+!.gitignore
+!debian/changelog
+!debian/compat
+!debian/control
+!debian/psample.install
+!debian/rules
+!Makefile
diff --git a/src/sflow/sflowtool/.gitignore b/src/sflow/sflowtool/.gitignore
new file mode 100644
index 000000000..138e705d6
--- /dev/null
+++ b/src/sflow/sflowtool/.gitignore
@@ -0,0 +1,8 @@
+*
+!.gitignore
+!debian/changelog
+!debian/compat
+!debian/control
+!debian/sflowtool.install
+!debian/rules
+!Makefile
diff --git a/src/smartmontools/.gitignore b/src/smartmontools/.gitignore
new file mode 100644
index 000000000..a0991ff44
--- /dev/null
+++ b/src/smartmontools/.gitignore
@@ -0,0 +1,3 @@
+*
+!.gitignore
+!Makefile
diff --git a/src/snmpd/.gitignore b/src/snmpd/.gitignore
new file mode 100644
index 000000000..a0991ff44
--- /dev/null
+++ b/src/snmpd/.gitignore
@@ -0,0 +1,3 @@
+*
+!.gitignore
+!Makefile
diff --git a/src/socat/.gitignore b/src/socat/.gitignore
new file mode 100644
index 000000000..d19db76ab
--- /dev/null
+++ b/src/socat/.gitignore
@@ -0,0 +1,4 @@
+*
+!.gitignore
+!Makefile
+!patch/
diff --git a/src/sonic-device-data/.gitignore b/src/sonic-device-data/.gitignore
new file mode 100644
index 000000000..963a3ac55
--- /dev/null
+++ b/src/sonic-device-data/.gitignore
@@ -0,0 +1,2 @@
+src/debian
+src/device
diff --git a/src/sonic-yang-mgmt/.gitignore b/src/sonic-yang-mgmt/.gitignore
new file mode 100644
index 000000000..ba7466050
--- /dev/null
+++ b/src/sonic-yang-mgmt/.gitignore
@@ -0,0 +1,57 @@
+# Byte-compiled / optimized / DLL files
+__pycache__/
+*.py[cod]
+
+# C extensions
+*.so
+
+# Distribution / packaging
+.Python
+env/
+build/
+develop-eggs/
+dist/
+downloads/
+eggs/
+.eggs/
+lib/
+lib64/
+parts/
+sdist/
+var/
+*.egg-info/
+.installed.cfg
+*.egg
+
+# PyInstaller
+#  Usually these files are written by a python script from a template
+#  before PyInstaller builds the exe, so as to inject date/other infos into it.
+*.manifest
+*.spec
+
+# Installer logs
+pip-log.txt
+pip-delete-this-directory.txt
+
+# Unit test / coverage reports
+htmlcov/
+.tox/
+.coverage
+.coverage.*
+.cache
+nosetests.xml
+coverage.xml
+*,cover
+
+# Translations
+*.mo
+*.pot
+
+# Django stuff:
+*.log
+
+# Sphinx documentation
+docs/_build/
+
+# PyBuilder
+target/
diff --git a/src/sonic-yang-models/.gitignore b/src/sonic-yang-models/.gitignore
new file mode 100644
index 000000000..c5522334f
--- /dev/null
+++ b/src/sonic-yang-models/.gitignore
@@ -0,0 +1,59 @@
+# Byte-compiled / optimized / DLL files
+__pycache__/
+*.py[cod]
+
+# C extensions
+*.so
+
+# Distribution / packaging
+.Python
+env/
+build/
+develop-eggs/
+dist/
+downloads/
+eggs/
+.eggs/
+lib/
+lib64/
+parts/
+sdist/
+var/
+*.egg-info/
+.installed.cfg
+*.egg
+
+# PyInstaller
+#  Usually these files are written by a python script from a template
+#  before PyInstaller builds the exe, so as to inject date/other infos into it.
+*.manifest
+*.spec
+
+# Installer logs
+pip-log.txt
+pip-delete-this-directory.txt
+
+# Unit test / coverage reports
+htmlcov/
+.tox/
+.coverage
+.coverage.*
+.cache
+nosetests.xml
+coverage.xml
+*,cover
+
+# Translations
+*.mo
+*.pot
+
+# Django stuff:
+*.log
+
+# Sphinx documentation
+docs/_build/
+
+# PyBuilder
+target/
+
+yang-models/sonic_yang_tree
diff --git a/src/supervisor/.gitignore b/src/supervisor/.gitignore
new file mode 100644
index 000000000..d19db76ab
--- /dev/null
+++ b/src/supervisor/.gitignore
@@ -0,0 +1,4 @@
+*
+!.gitignore
+!Makefile
+!patch/
diff --git a/src/swig/.gitignore b/src/swig/.gitignore
new file mode 100644
index 000000000..a0991ff44
--- /dev/null
+++ b/src/swig/.gitignore
@@ -0,0 +1,3 @@
+*
+!.gitignore
+!Makefile
diff --git a/src/systemd-sonic-generator/.gitignore b/src/systemd-sonic-generator/.gitignore
new file mode 100644
index 000000000..06e13f381
--- /dev/null
+++ b/src/systemd-sonic-generator/.gitignore
@@ -0,0 +1,6 @@
+systemd-sonic-generator
+debian/*
+!debian/changelog
+!debian/compat
+!debian/control
+!debian/rules
diff --git a/src/tacacs/.gitignore b/src/tacacs/.gitignore
new file mode 100644
index 000000000..3e483805d
--- /dev/null
+++ b/src/tacacs/.gitignore
@@ -0,0 +1,8 @@
+*
+!.gitignore
+nsm/*
+!nsm/Makefile
+!nsm/*.patch
+pam/*
+!pam/Makefile
+!pam/*.patch
diff --git a/src/thrift/.gitignore b/src/thrift/.gitignore
new file mode 100644
index 000000000..d19db76ab
--- /dev/null
+++ b/src/thrift/.gitignore
@@ -0,0 +1,4 @@
+*
+!.gitignore
+!Makefile
+!patch/