device: add lg-hammerhead

devices/lg-hammerhead/default.nix

@@ -0,0 +1,44 @@
+{ config, lib, pkgs, ... }:
+
+{
+  mobile.device.name = "lg-hammerhead";
+  mobile.device.info = rec {
+    format_version="0";
+    name="Google Nexus 5";
+    manufacturer="LG";
+    codename="lg-hammerhead";
+    date="";
+    keyboard="false";
+    nonfree="false";
+    append_dtb="true";
+    modules_initfs="";
+    external_storage="false";
+    flash_method="fastboot";
+    arch="armv7";
+    # Fastboot related
+    generate_bootimg="true";
+    flash_offset_base="0";
+    flash_offset_kernel="0x00008000";
+    flash_offset_ramdisk="0x2900000";
+    flash_offset_second="0x00f00000";
+    flash_offset_tags="0x02700000";
+    kernel_cmdline="console=tty0 console=ttyMSM0,115200,n8";
+    flash_pagesize="2048";
+    dev_touchscreen = "";
+    dev_touchscreen_calibration = "";
+    dev_keyboard = "";
+    bootimg_qcdt = true;
+    # TODO : make kernel part of options.
+    kernel = pkgs.callPackage ./kernel { kernelPatches = pkgs.defaultKernelPatches; };
+    dtb = "${kernel}/dtbs/qcom-msm8974-lge-nexus5-hammerhead.dtb";
+  };
+  mobile.hardware = {
+    soc = "qualcomm-msm8974";
+    ram = 1024 * 2;
+    screen = {
+      width = 1080; height = 1920;
+    };
+  };
+
+  mobile.system.type = "android";
+}

devices/lg-hammerhead/kernel/compiler-gcc6.h

@@ -0,0 +1,69 @@
+// SOURCE:
+// https://github.com/NextThingCo/CHIP-u-boot/issues/10#issuecomment-287515505
+
+#ifndef __LINUX_COMPILER_H
+#error "Please don't include <linux/compiler-gcc6.h> directly, include <linux/compiler.h> instead."
+#endif
+
+#define __used				__attribute__((__used__))
+#define __must_check			__attribute__((warn_unused_result))
+#define __compiler_offsetof(a, b)	__builtin_offsetof(a, b)
+
+/* Mark functions as cold. gcc will assume any path leading to a call
+   to them will be unlikely.  This means a lot of manual unlikely()s
+   are unnecessary now for any paths leading to the usual suspects
+   like BUG(), printk(), panic() etc. [but let's keep them for now for
+   older compilers]
+
+   Early snapshots of gcc 4.3 don't support this and we can't detect this
+   in the preprocessor, but we can live with this because they're unreleased.
+   Maketime probing would be overkill here.
+
+   gcc also has a __attribute__((__hot__)) to move hot functions into
+   a special section, but I don't see any sense in this right now in
+   the kernel context */
+#define __cold			__attribute__((__cold__))
+
+#define __UNIQUE_ID(prefix) __PASTE(__PASTE(__UNIQUE_ID_, prefix), __COUNTER__)
+
+#ifndef __CHECKER__
+# define __compiletime_warning(message) __attribute__((warning(message)))
+# define __compiletime_error(message) __attribute__((error(message)))
+#endif /* __CHECKER__ */
+
+/*
+ * Mark a position in code as unreachable.  This can be used to
+ * suppress control flow warnings after asm blocks that transfer
+ * control elsewhere.
+ *
+ * Early snapshots of gcc 4.5 don't support this and we can't detect
+ * this in the preprocessor, but we can live with this because they're
+ * unreleased.  Really, we need to have autoconf for the kernel.
+ */
+#define unreachable() __builtin_unreachable()
+
+/* Mark a function definition as prohibited from being cloned. */
+#define __noclone	__attribute__((__noclone__))
+
+/*
+ * Tell the optimizer that something else uses this function or variable.
+ */
+#define __visible __attribute__((externally_visible))
+
+/*
+ * GCC 'asm goto' miscompiles certain code sequences:
+ *
+ *   http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58670
+ *
+ * Work it around via a compiler barrier quirk suggested by Jakub Jelinek.
+ *
+ * (asm goto is automatically volatile - the naming reflects this.)
+ */
+#define asm_volatile_goto(x...)	do { asm goto(x); asm (""); } while (0)
+
+#ifdef CONFIG_ARCH_USE_BUILTIN_BSWAP
+#define __HAVE_BUILTIN_BSWAP32__
+#define __HAVE_BUILTIN_BSWAP64__
+#define __HAVE_BUILTIN_BSWAP16__
+#endif /* CONFIG_ARCH_USE_BUILTIN_BSWAP */
+

devices/lg-hammerhead/kernel/default.nix

@@ -0,0 +1,52 @@
+{
+  mobile-nixos
+, fetchFromGitHub
+, fetchgit
+, kernelPatches ? [] # FIXME
+}:
+
+(mobile-nixos.kernel-builder {
+  version = "5.2.0";
+  configfile = ./config.armv7;
+
+  file = "zImage";
+  hasDTB = true;
+
+  src = fetchFromGitHub {
+    owner = "masneyb";
+    repo = "linux";
+    rev = "33fee68163e501634338b40aac2ebe279bf7787b";
+    sha256 = "1n40vcd4gdppg29n63asbvasd0ybcwldmi044kk9j0lrksga1p5d";
+  };
+
+  patches = [
+  # ./90_dtbs-install.patch
+  # ./99_framebuffer.patch
+  ];
+
+  isModular = false;
+}).overrideAttrs({ postInstall ? "", postPatch ? "", ... }: {
+  installTargets = [ "zinstall" ];
+  postPatch = postPatch + ''
+    cp -v "${./compiler-gcc6.h}" "./include/linux/compiler-gcc6.h"
+  '';
+  postInstall = postInstall + ''
+    mkdir -p "$out/boot"
+
+    # FIXME factor this out properly
+    # Copies all potential output files.
+    for f in zImage-dtb Image.gz-dtb zImage Image.gz Image; do
+      f=arch/arm/boot/$f
+      [ -e "$f" ] || continue
+      echo "zImage found: $f"
+      cp -v "$f" "$out/"
+      break
+    done
+
+    mkdir -p $out/dtb
+    for f in arch/*/boot/dts/*.dtb; do
+      cp -v "$f" $out/dtb/
+    done
+
+  '';
+})

devices/lg-hammerhead/partitions_16GB.gdisk

@@ -0,0 +1,31 @@
+partx -s /dev/block/mmcblk0
+NR    START      END  SECTORS  SIZE NAME    UUID
+ 1     1024   132095   131072   64M modem   00000000-0000-0000-0000-000000000000
+ 2   132096   134143     2048    1M sbl1    00000000-0000-0000-0000-000000000000
+ 3   134144   135167     1024  512K rpm     00000000-0000-0000-0000-000000000000
+ 4   135168   136191     1024  512K tz      00000000-0000-0000-0000-000000000000
+ 5   136192   137215     1024  512K sdi     00000000-0000-0000-0000-000000000000
+ 6   137216   138239     1024  512K aboot   00000000-0000-0000-0000-000000000000
+ 7   138240   142335     4096    2M pad     00000000-0000-0000-0000-000000000000
+ 8   142336   144383     2048    1M sbl1b   00000000-0000-0000-0000-000000000000
+ 9   144384   145407     1024  512K tzb     00000000-0000-0000-0000-000000000000
+10   145408   146431     1024  512K rpmb    00000000-0000-0000-0000-000000000000
+11   146432   147455     1024  512K abootb  00000000-0000-0000-0000-000000000000
+12   147456   153599     6144    3M modemst 00000000-0000-0000-0000-000000000000
+13   153600   159743     6144    3M modemst 00000000-0000-0000-0000-000000000000
+14   159744   160767     1024  512K metadat 00000000-0000-0000-0000-000000000000
+15   160768   193535    32768   16M misc    00000000-0000-0000-0000-000000000000
+16   193536   226303    32768   16M persist 00000000-0000-0000-0000-000000000000
+17   226304   232447     6144    3M imgdata 00000000-0000-0000-0000-000000000000
+18   232448   277503    45056   22M laf     00000000-0000-0000-0000-000000000000
+19   277504   322559    45056   22M boot    00000000-0000-0000-0000-000000000000
+20   322560   367615    45056   22M recover 00000000-0000-0000-0000-000000000000
+21   367616   373759     6144    3M fsg     00000000-0000-0000-0000-000000000000
+22   373760   374783     1024  512K fsc     00000000-0000-0000-0000-000000000000
+23   374784   375807     1024  512K ssd     00000000-0000-0000-0000-000000000000
+24   375808   376831     1024  512K DDR     00000000-0000-0000-0000-000000000000
+25   376832  2473983  2097152    1G system  00000000-0000-0000-0000-000000000000
+26  2473984  2535423    61440   30M crypto  00000000-0000-0000-0000-000000000000
+27  2535424  3969023  1433600  700M cache   00000000-0000-0000-0000-000000000000
+28  3969024 61071315 57102292 27.2G userdat 00000000-0000-0000-0000-000000000000
+29 61071316 61071326       11  5.5K grow    00000000-0000-0000-0000-000000000000

modules/hardware-qualcomm.nix

@@ -22,6 +22,11 @@ in
       default = false;
       description = "enable when SOC is msm8939";
     };
+    hardware.socs.qualcomm-msm8974.enable = mkOption {
+      type = types.bool;
+      default = false;
+      description = "enable when SOC is msm8974";
+    };
   };
 
   config = mkMerge [
@@ -37,6 +42,12 @@ in
         quirks.qualcomm.msm-fb-handle.enable = true;
       };
     }
+    {
+      mobile = mkIf cfg.qualcomm-msm8974.enable {
+        system.system = "armv7l-linux";
+        quirks.qualcomm.msm-fb-refresher.enable = true;
+      };
+    }
     {
       mobile = mkIf cfg.qualcomm-apq8064-1aa.enable {
         system.system = "armv7l-linux";