build_kernel.sh

Cross compile RPi Linux kernel. The script automates the building process described here

Usage

Usage: build_kernel.sh [RPI_PLAT]
where RPI_PLAT is one of:
pi0, pi1, cm   for Pi 1/Zero/Zero W, CM (32-bit)
pi2, pi3, cm3  for Pi 2/3/3+, CM 3 (32-bit)
pi4            for Pi 4 (32-bit)
pi3_64, cm3_64 for Pi 3/3+, CM 3 (64-bit)
pi4_64         for Pi 4 (64-bit)

If RPI_PLAT is not provided build target may be chosen from menu on run-time.

Before building the kernel TOOLCHAIN32/64 and KERNEL_SRC environment variables need to be set. setenv.sh contains sample configuration of these variables. Update the script accordingly and source it:

. ./setenv.sh

After running build_kernel.sh script the result is tar.gz archive containing the kernel build. Appropriate prefix is added to the archive name to distinguish targets as follows:

• kernel-x.y.z+.tar.gz for Pi 1/Zero/Zero W, CM (32-bit)
• kernel-x.y.z-v7+.tar.gz for Pi 2/3/3+, CM 3 (32-bit)
• kernel-x.y.z-v7l+.tar.gz for Pi 4 (32-bit)
• kernel-x.y.z-v8+.tar.gz for Pi 3/3+, CM 3 (64-bit)
• kernel-x.y.z-v8l+.tar.gz for Pi 4 (64-bit)

NOTE: kernel8 is a common kernel image name inside Pi 3/3+ and Pi 4 64-bit archives.

The archive content may be directly extracted on the platform root filesystem. Make the kernel image backup if needed!

search_kernel_commit.sh

Look for specific kernel version (or family of kernel versions) commit(s) on official RPi GutHub firmware and kernel repositories.

Usage

Example of usage:

$ ./search_kernel_commit.sh 5.10.14
1 result(s) for kernel 5.10.14 [max. 100]
  linux: e7d4a958d4662a95574ef166adba161a1edf4319 firmware: f11bc1321a2747b00be83ca7169af0bfe601d376 [kernel: Bump to 5.10.14]

$ ./search_kernel_commit.sh 5.10.
13 result(s) for kernel 5.10. [max. 100]
  linux: ab9e2a6a6d0a3e67185f6ef8e33f4646e8b3c13b firmware: dc4840bb0746c9bb695f534cb3c3d47d2804b0c2 [kernel: Bump to 5.10.6 (correction)]
  linux: ab9e2a6a6d0a3e67185f6ef8e33f4646e8b3c13b firmware: e934b564762a1f9b11ed3753e5878a680e38a70e [kernel: Bump to 5.10.5]
  linux: 31fbc18058672e9e3c5ab3532064d690374152da firmware: 7ecd699b3f54f4985032d774fdab55f98d44ebf6 [kernel: Bump to 5.10.3]
  linux: 16d8dbed61ca60df412cb63ab24c6221394500d7 firmware: 8a5549c137dbce0e082ecf21607dc5e3feac1160 [kernel: Bump to 5.10.0]
  linux: b1f47573c1fc640d360349f767568ff3a84e778d firmware: 0fb9a0dce50c3f4683254f57c3a5c20289a4de8a [kernel: Bump to 5.10.2]
  linux: 98a26692449ad74be15a25c05bb5be5396aaea4f firmware: 7d91570f20378afc9414107dccdad70705a8a342 [kernel: Bump to 5.10.13]
  linux: c5f51df7d0c457c330d0daecba491f61b979f048 firmware: 496e65477e06172ea20602e365d3790632c3cc06 [kernel: Bump to 5.10.11]
  linux: 17cf96be41468bd9881eb3f0afb95ebe984c0c4b firmware: 051e5e1be85fa7119aebf20adf8e61b9fe37c459 [kernel: Bump to 5.10.9]
  linux: e9505f4612646533f53813aabef5ca040b0ea49d firmware: c78f3ef45229ab722ec6b858f39b078535d88bee [kernel: Bump to 5.10.7]
  linux: a7eebc039b08185dfe72c2bbe8275e930b37b575 firmware: 0ee1d9f2fc852b20e247bb832a3b8d0a13b6ada6 [kernel: Bump to 5.10.5]
  linux: 684bc6681ac06b318b1ac02fbf7c8b0a61ee72e7 firmware: d06d94e8f171362214edc7aef6e74329ab6cb588 [kernel: Bump to 5.10.4]
  linux: 967d45b29ca2902f031b867809d72e3b3d623e7a firmware: d016a6eb01c8c7326a89cb42809fed2a21525de5 [kernel: Bump to 5.10.1]
  linux: e7d4a958d4662a95574ef166adba161a1edf4319 firmware: f11bc1321a2747b00be83ca7169af0bfe601d376 [kernel: Bump to 5.10.14]