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99 lines
3.1 KiB
Zig
99 lines
3.1 KiB
Zig
const std = @import("std");
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const MicroZig = @import("microzig-build");
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pub const microzig_board_support = MicroZig.registerBoardSupport(@This());
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fn path(comptime suffix: []const u8) std.Build.LazyPath {
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return .{
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.cwd_relative = comptime ((std.fs.path.dirname(@src().file) orelse ".") ++ suffix),
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};
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}
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const hal = .{
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.source_file = path("/src/hals/LPC176x5x.zig"),
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};
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pub const chips = struct {
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pub const lpc176x5x = MicroZig.Target{
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.preferred_format = .elf,
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.chip = .{
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// TODO: Separate over those chips, this is not generic!
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.name = "LPC176x5x",
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.cpu = .cortex_m3,
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.memory_regions = &.{
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.{ .offset = 0x00000000, .length = 512 * 1024, .kind = .flash },
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.{ .offset = 0x10000000, .length = 32 * 1024, .kind = .ram },
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.{ .offset = 0x2007C000, .length = 32 * 1024, .kind = .ram },
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},
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.register_definition = .{
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.json = path("/src/chips/LPC176x5x.json"),
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},
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},
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.hal = hal,
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.binary_post_process = postprocess,
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};
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};
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pub const boards = struct {
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pub const mbed = struct {
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pub const lpc1768 = MicroZig.Target{
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.preferred_format = .hex,
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.chip = chips.lpc176x5x.chip,
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.hal = hal,
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.board = .{
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.name = "mbed LPC1768",
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.url = "https://os.mbed.com/platforms/mbed-LPC1768/",
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.source_file = path("/src/boards/mbed_LPC1768.zig"),
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},
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.binary_post_process = postprocess,
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};
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};
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};
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/// Post-processes an ELF file to add a checksum over the first 8 words so the
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/// cpu will properly boot.
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fn postprocess(b: *std.Build, input: std.Build.LazyPath) std.Build.LazyPath {
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const patchelf = b.addExecutable(.{
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.name = "lpc176x5x-patchelf",
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.root_source_file = path("/src/tools/patchelf.zig"),
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});
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const patch = b.addRunArtifact(patchelf);
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patch.addFileArg(input);
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return patch.addOutputFileArg("firmware.elf");
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}
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pub fn build(b: *std.Build) void {
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_ = b;
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// const optimize = b.standardOptimizeOption(.{});
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// inline for (@typeInfo(boards).Struct.decls) |decl| {
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// if (!decl.is_pub)
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// continue;
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// const exe = microzig.addEmbeddedExecutable(b, .{
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// .name = @field(boards, decl.name).name ++ ".minimal",
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// .source_file = .{
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// .path = "test/programs/minimal.zig",
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// },
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// .backing = .{ .board = @field(boards, decl.name) },
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// .optimize = optimize,
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// });
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// exe.installArtifact(b);
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// }
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// inline for (@typeInfo(chips).Struct.decls) |decl| {
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// if (!decl.is_pub)
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// continue;
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// const exe = microzig.addEmbeddedExecutable(b, .{
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// .name = @field(chips, decl.name).name ++ ".minimal",
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// .source_file = .{
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// .path = "test/programs/minimal.zig",
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// },
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// .backing = .{ .chip = @field(chips, decl.name) },
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// .optimize = optimize,
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// });
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// exe.installArtifact(b);
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// }
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}
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