Try to build for Raspberry Pi 2

.github/workflows/build.yml

@@ -19,23 +19,25 @@ jobs:
     - name: Recursively pull git submodules
       run: |
            git submodule update --init --recursive
-    - name: Install toolchain
+    - name: Install toolchains
       run: |
            wget -q https://developer.arm.com/-/media/Files/downloads/gnu-a/10.3-2021.07/binrel/gcc-arm-10.3-2021.07-x86_64-aarch64-none-elf.tar.xz
-           tar xf gcc-arm-*-*.tar.xz 
+           tar xf *-aarch64-none-elf.tar.xz
+           wget -q https://developer.arm.com/-/media/Files/downloads/gnu-a/10.3-2021.07/binrel/gcc-arm-10.3-2021.07-x86_64-arm-none-eabi.tar.xz
+           tar xf *-arm-none-eabi.tar.xz
     - name: Build for Raspberry Pi 4
       run: |
-           export PATH=$(readlink -f ./gcc-*/bin/):$PATH
+           export PATH=$(readlink -f ./gcc-*aarch64-none*/bin/):$PATH
            RPI=4 bash -ex build.sh
            ls src/*.img
-    - name: Build for Raspberry Pi 3
+    - name: Build for Raspberry Pi 2
       run: |
-           export PATH=$(readlink -f ./gcc-*/bin/):$PATH
+           export PATH=$(readlink -f ./gcc-*arm-none*/bin/):$PATH
-           RPI=3 bash -ex build.sh
+           RPI=2 bash -ex build.sh
            ls src/*.img
     - name: Get Raspberry Pi boot files
       run: |
-           export PATH=$(readlink -f ./gcc-*/bin/):$PATH
+           export PATH=$(readlink -f ./gcc-*aarch64-none*/bin/):$PATH
            cd ./circle-stdlib/libs/circle/boot
            make
            make armstub64