2711: Add basic 64-bit support

This commit adds initial support for 64-bit 2711 builds. However, it will only work as much as it does if the Pi4 RAM is limited to 1GB - more than that and several things break (SD card, coherent allocations, etc.) Signed-off-by: Phil Elwell <phil@raspberrypi.org>
raspberrypi · Jun 26, 2019 · 6b52bf8 · 6b52bf8
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diff --git a/arch/arm64/boot/dts/broadcom/Makefile b/arch/arm64/boot/dts/broadcom/Makefile
@@ -5,6 +5,7 @@ dtb-$(CONFIG_ARCH_BCM2835) += bcm2837-rpi-3-a-plus.dtb \
 			      bcm2837-rpi-cm3-io3.dtb
 dtb-$(CONFIG_ARCH_BCM2709) += bcm2710-rpi-3-b.dtb
 dtb-$(CONFIG_ARCH_BCM2835) += bcm2710-rpi-3-b.dtb
+dtb-$(CONFIG_ARCH_BCM2835) += bcm2711-rpi-4-b.dtb
 dtb-$(CONFIG_ARCH_BCM2835) += bcm2710-rpi-3-b-plus.dtb
 dtb-$(CONFIG_ARCH_BCM2709) += bcm2710-rpi-cm3.dtb
 dtb-$(CONFIG_ARCH_BCM2835) += bcm2710-rpi-cm3.dtb

diff --git a/arch/arm64/boot/dts/broadcom/bcm2711-rpi-4-b.dts b/arch/arm64/boot/dts/broadcom/bcm2711-rpi-4-b.dts
@@ -0,0 +1,3 @@
+#define RPI364
+
+#include "../../../../arm/boot/dts/bcm2711-rpi-4-b.dts"