add outputs.flashable - flashable firmware.bin

This commit is contained in:
Daniel Barlow 2023-03-02 23:01:26 +00:00
parent 0cab6e9fba
commit 6d191b73ae
7 changed files with 85 additions and 0 deletions

View file

@ -91,6 +91,12 @@
defaultOutput = "tftproot";
loadAddress = "0x80060000";
entryPoint = "0x80060000";
flash = {
address = "0x9F060000";
size ="0xfa0000";
};
rootDevice = "1f05";
networkInterfaces = {
lan = interface { device = "eth0"; };
wan = interface { device = "eth1"; };

View file

@ -1,18 +1,22 @@
{
stdenv
, dtc
, lib
}:
{ dts
, includes
, commandLine
}:let
cppDtSearchFlags = builtins.concatStringsSep " " (map (f: "-I${f}") includes);
dtcSearchFlags = builtins.concatStringsSep " " (map (f: "-i${f}") includes);
cmdline = lib.concatStringsSep " " commandLine;
in stdenv.mkDerivation {
name = "dtb";
phases = [ "buildPhase" ];
nativeBuildInputs = [ dtc ];
buildPhase = ''
${stdenv.cc.targetPrefix}cpp -nostdinc -x assembler-with-cpp ${cppDtSearchFlags} -undef -D__DTS__ -o dtb.tmp ${dts}
echo '/{ chosen { bootargs = ${builtins.toJSON cmdline}; }; };' >> dtb.tmp
dtc ${dtcSearchFlags} -I dts -O dtb -o $out dtb.tmp
test -e $out
'';

View file

@ -75,6 +75,7 @@ in {
default = [];
example = ["ath9k" "ath10k"];
};
rootDevice = mkOption { };
networkInterfaces = mkOption {
type = types.attrsOf types.anything;
};

71
modules/flashable.nix Normal file
View file

@ -0,0 +1,71 @@
{
config
, pkgs
, lib
, ...
}:
let
inherit (lib) mkOption types concatStringsSep;
inherit (config.boot) tftp;
in {
options = {
device.flash = {
address = mkOption { type = types.str; };
size = mkOption { type = types.str; };
};
};
config = {
kernel = {
config = {
MTD_SPLIT_UIMAGE_FW = "y";
# ignore the commandline provided by U-Boot because it's most
# likely wrong
MIPS_CMDLINE_FROM_BOOTLOADER = lib.mkForce "n";
MIPS_CMDLINE_FROM_DTB = "y";
};
};
boot.commandLine = [
"root=${config.device.rootDevice}"
];
outputs.firmware =
let o = config.outputs; in
pkgs.runCommand "firmware" {} ''
dd if=${o.uimage} of=$out bs=128k conv=sync
dd if=${o.squashfs} of=$out bs=128k conv=sync,nocreat,notrunc oflag=append
'';
outputs.flashable =
let o = config.outputs; in
pkgs.runCommand "flashable" {} ''
mkdir $out
cd $out
ln -s ${o.firmware} firmware.bin
ln -s ${o.squashfs} squashfs
ln -s ${o.kernel} vmlinux
ln -s ${o.manifest} manifest
ln -s ${o.kernel.headers} build
ln -s ${o.uimage} uimage
ln -s ${o.dtb} dtb
ln -s ${o.flash-scr} flash.scr
'';
outputs.flash-scr =
let
inherit (pkgs.lib.trivial) toHexString;
inherit (pkgs.lib.lists) concatStringsSep;
inherit (config.device) flash;
in
pkgs.buildPackages.runCommand "" {} ''
imageSize=$(stat -L -c %s ${config.outputs.firmware})
cat > $out << EOF
setenv serverip ${tftp.serverip}
setenv ipaddr ${tftp.ipaddr}
tftp 0x$(printf %x ${tftp.loadAddress}) result/firmware.bin
erase 0x$(printf %x ${flash.address}) +0x$(printf %x ${flash.size})
cp.b 0x$(printf %x ${tftp.loadAddress}) 0x$(printf %x ${flash.address}) \''${filesize}
echo command line was ${builtins.toJSON (concatStringsSep " " config.boot.commandLine)}
EOF
'';
};
}

View file

@ -23,6 +23,7 @@ in
inherit (config.kernel) config src extraPatchPhase;
};
dtb = (callPackage ../kernel/dtb.nix {}) {
inherit (config.boot) commandLine;
dts = config.boot.dts.src;
includes = config.boot.dts.includes ++ [
"${kernel.headers}/include"

View file

@ -26,6 +26,7 @@ in {
MTD = "y";
MTD_PHRAM = "y";
MTD_CMDLINE_PARTS = "y";
MIPS_CMDLINE_FROM_BOOTLOADER = "y";
# one or more of the following is required to get from
# VFS: Cannot open root device "1f00" or unknown-block(31,0): error -6

View file

@ -44,6 +44,7 @@ in rec {
imports = [
./modules/wlan.nix
./modules/tftpboot.nix
./modules/flashable.nix
];
kernel = {