kernels: add linux-libre-aarch64

Some System On a Chip (SOC) have 64bit ARM CPUs that are also
capable of running arm 32bit applications.

Since:
- Parabola doesn't have an aarch64 package repository yet
- The devicetree of devices using such System On a Chip
  are not compiled when using the armv7 defconfig
- Drivers or other platform support code for such hardware
  might also not be compiled in with the armv7 defconfig
- This approach has already been tested with the linux-libre-x86_64
  kenrel

It's then a good idea to add support for such devices by adding
an arrch64 kernel as the maintenance and work is minimal.

The downside is that the external kernel modules that are either
compiled against the kernel or using DKMS will not work by default.

It's however still possible to compile them by hand by using
ARCH= and CROSS_COMPILE= as it is done for this kernel, so it
should be relatively easy to add support for the non-dkms modules.

As for DKMS, someone would need to look into it to understand how
to pass it the make flags (ARCH= and CROSS_COMPILE=) that are
required to automatically build modules.

Signed-off-by: Denis 'GNUtoo' Carikli <GNUtoo@cyberdimension.org>

1 files changed, 36 insertions, 0 deletions

diff --git a/kernels/linux-libre-arm64/0007-iwlwifi-pcie-restore-support-for-Killer-Qu-C0-NICs.patch b/kernels/linux-libre-arm64/0007-iwlwifi-pcie-restore-support-for-Killer-Qu-C0-NICs.patch
new file mode 100644
index 000000000..3cab84dee
--- /dev/null
+++ b/kernels/linux-libre-arm64/0007-iwlwifi-pcie-restore-support-for-Killer-Qu-C0-NICs.patch
@@ -0,0 +1,36 @@
+From 265dae4f5dac25c15272befa5eefb9b10906435f Mon Sep 17 00:00:00 2001
+From: "Jan Alexander Steffens (heftig)" <jan.steffens@gmail.com>
+Date: Tue, 24 Dec 2019 05:18:47 +0100
+Subject: [PATCH 07/13] iwlwifi: pcie: restore support for Killer Qu C0 NICs
+
+Commit 809805a820c6 refactored the cfg mangling. Unfortunately, in this
+process the lines which picked the right cfg for Killer Qu C0 NICs after
+C0 detection were lost. These lines were added by commit b9500577d361.
+
+I suspect this is more of the "merge damage" which commit 7cded5658329
+talks about.
+
+Fixes: 809805a820c6 ("iwlwifi: pcie: move some cfg mangling from trans_pcie_alloc to probe")
+Signed-off-by: Jan Alexander Steffens (heftig) <jan.steffens@gmail.com>
+---
+ drivers/net/wireless/intel/iwlwifi/pcie/drv.c | 4 ++++
+ 1 file changed, 4 insertions(+)
+
+diff --git a/drivers/net/wireless/intel/iwlwifi/pcie/drv.c b/drivers/net/wireless/intel/iwlwifi/pcie/drv.c
+index b0b7eca1754e..de62a6dc4e73 100644
+--- a/drivers/net/wireless/intel/iwlwifi/pcie/drv.c
++++ b/drivers/net/wireless/intel/iwlwifi/pcie/drv.c
+@@ -1107,6 +1107,10 @@ static int iwl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
+ 			cfg = &iwl9560_2ac_cfg_qu_c0_jf_b0;
+ 		else if (cfg == &iwl9560_2ac_160_cfg_qu_b0_jf_b0)
+ 			cfg = &iwl9560_2ac_160_cfg_qu_c0_jf_b0;
++		else if (cfg == &killer1650s_2ax_cfg_qu_b0_hr_b0)
++			cfg = &killer1650s_2ax_cfg_qu_c0_hr_b0;
++		else if (cfg == &killer1650i_2ax_cfg_qu_b0_hr_b0)
++			cfg = &killer1650i_2ax_cfg_qu_c0_hr_b0;
+ 	}
+ 
+ 	/* same thing for QuZ... */
+-- 
+2.24.1
+