snlavaiseandClaude Sonnet 5
988dd10251
New hypotheses from re-comparing with the stock boot: - 'earlycon' (bare) brings up uart7 in setup_arch(), before the clock framework. Stock uses console=null and almost certainly leaves the QUP0 clock gated -> touching uart7 MMIO faults before any console. Drop earlycon + the serial console; keep console=tty0 only. - Also drop clk_ignore_unused / pd_ignore_unused (can break qcom power domain init) and ignore_loglevel stays for the fb console. - Move the simple-framebuffer out of /chosen and drop the #address-cells override there, so the bootloader's /memory + initrd patching into /chosen is not disturbed. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01QF5HebjUsRaxbW4cBX6HJP
125 lines
4.0 KiB
Bash
125 lines
4.0 KiB
Bash
# Reference: <https://postmarketos.org/vendorkernel>
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# Mainline kernel + the (not-yet-upstream) Motorola rtwo device tree.
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# Config base: linux-postmarketos-mainline's config-mainline.aarch64.
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maintainer="snlavaise <snlavaise@gmail.com>"
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_flavor="postmarketos-qcom-sm8550"
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pkgname=linux-$_flavor
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pkgver=7.2
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pkgrel=7
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pkgdesc="Mainline kernel for Qualcomm SM8550 (Snapdragon 8 Gen 2) + Motorola rtwo"
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arch="aarch64"
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_carch="arm64"
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url="https://kernel.org"
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license="GPL-2.0-only"
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options="
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!check
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!strip
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!tracedeps
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pmb:cross-native
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pmb:kconfigcheck-community
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"
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makedepends="
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bash
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bison
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clang
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diffutils
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elfutils-dev
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findutils
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flex
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gmp-dev
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kmod
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linux-headers
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lld
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llvm
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mpc1-dev
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mpfr-dev
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openssl-dev
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pahole
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perl
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postmarketos-installkernel
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python3
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xz
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zstd
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"
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source="
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$pkgname-$pkgver.tar.gz::https://git.kernel.org/torvalds/t/linux-${pkgver/_/-}.tar.gz
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config-motorola-rtwo.aarch64
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rtwo.config
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sm8550-motorola-rtwo.dts
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"
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builddir="$srcdir/linux-${pkgver/_/-}"
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prepare() {
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default_prepare
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# The Motorola rtwo (Moto Edge 40 Pro) device tree is not upstream yet.
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local _dtsdir="arch/$_carch/boot/dts/qcom"
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cp "$srcdir/sm8550-motorola-rtwo.dts" "$_dtsdir/sm8550-motorola-rtwo.dts"
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if ! grep -q "sm8550-motorola-rtwo.dtb" "$_dtsdir/Makefile"; then
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sed -i '/sm8550-mtp\.dtb/a dtb-$(CONFIG_ARCH_QCOM) += sm8550-motorola-rtwo.dtb' \
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"$_dtsdir/Makefile"
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fi
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# Base config (from linux-postmarketos-mainline) + rtwo bring-up fragment.
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cp "$srcdir/config-motorola-rtwo.aarch64" .config
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cat "$srcdir/rtwo.config" >> .config
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make ARCH="$_carch" LLVM=1 olddefconfig
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}
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build() {
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unset LDFLAGS
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make ARCH="$_carch" LLVM=1 \
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KBUILD_BUILD_VERSION="$((pkgrel + 1))-$_flavor"
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}
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package() {
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# The Motorola bootloader boots a *raw* uncompressed arm64 Image
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# (BOARD_KERNEL_IMAGE_NAME := Image); Image.gz / vmlinuz.efi make it
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# reset in <2s. CONFIG_EFI_ZBOOT is off in rtwo.config.
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install -Dm644 "$builddir/arch/$_carch/boot/Image" \
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"$pkgdir/boot/vmlinuz"
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make modules_install dtbs_install \
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ARCH="$_carch" \
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LLVM=1 \
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INSTALL_MOD_PATH="$pkgdir"/usr \
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INSTALL_MOD_STRIP=1 \
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INSTALL_DTBS_PATH="$pkgdir"/boot/dtbs
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# Android DT-overlay image with a single no-op overlay. The bootloader
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# would otherwise apply the stock kalama dtbo overlay onto our mainline
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# base DTB - the phandles don't match, the merged tree is corrupt and
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# the kernel panics. A no-op overlay keeps the base DTB intact. (A
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# zero-entry table fails Motorola's pre-flash validation.)
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mkdir -p "$pkgdir"/boot
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printf '/dts-v1/;\n/plugin/;\n/ { };\n' > "$srcdir"/empty-overlay.dts
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scripts/dtc/dtc -@ -O dtb -o "$srcdir"/empty.dtbo "$srcdir"/empty-overlay.dts
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python3 - "$srcdir/empty.dtbo" "$pkgdir/boot/dtbo.img" <<-'EOF'
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import struct, sys
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fdt = open(sys.argv[1], "rb").read()
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hdr_sz = ent_sz = 32
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ent_off = hdr_sz + ent_sz
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hdr = struct.pack(">IIIIIIII", 0xd7b7ab1e, ent_off + len(fdt),
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hdr_sz, ent_sz, 1, hdr_sz, 2048, 0)
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ent = struct.pack(">IIIIIIII", len(fdt), ent_off, 0, 0, 0, 0, 0, 0)
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blob = hdr + ent + fdt
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blob += b"\x00" * ((4096 - len(blob) % 4096) % 4096)
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open(sys.argv[2], "wb").write(blob)
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EOF
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rm -f "$pkgdir"/usr/lib/modules/*/build "$pkgdir"/usr/lib/modules/*/source
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install -Dm644 "$builddir"/include/config/kernel.release \
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"$pkgdir"/usr/share/kernel/"$_flavor"/kernel.release
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}
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# 'pmbootstrap checksum linux-postmarketos-qcom-sm8550' fills in the tarball hash
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# (same tarball as linux-postmarketos-mainline, ~150 MB download).
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sha512sums="
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52d5aa7f94f6aa6141debf4ceb4fc7a2e75505a7cd38b8854e501be83c2b57863020f463f2fdb2fc93667e6cfe13274d077e5207a611e4797bd9404ee0e64c58 linux-postmarketos-qcom-sm8550-7.2.tar.gz
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f9ae52489f6b9e6fef64952943cd09732a5bef90a0e8765db03c256483028368687d6d5a1d80dd813a513e7e80d91f8b47f49b91cff67266b76f1d6275a7fea0 config-motorola-rtwo.aarch64
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53441c23146d76bb0eaa358a25f6cce4f21740cfb65b755df52bbb218daf2cda30b3d80fa6ca4e283ea1afe2b0fa708307b678b421898100710b8fb99b08d6c5 rtwo.config
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43f5147f474ad4fbbc926e21b1305991b04c88bac869c684aee6fa4bb548663c4079d4d389a002ed3502af746566cf8fc31261221825c8f3c6b3949fc36c518d sm8550-motorola-rtwo.dts
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"
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