Add initial MIPS port, sans automatic partitioner

Help with the automatic partitioner by parties interested in the MIPS
ports of Adélie (and/or Alpine and/or postmarketOS) would be very
desirable.

I'm only currently aware myself of how to partition SGI MIPS64 machines.
My gut tells me we probably need the `subarch` system like for PPC64,
but I am not sure how non-SGI MIPS64 machines need to be partitioned.

3 files changed, 45 insertions, 0 deletions

diff --git a/hscript/meta.cc b/hscript/meta.cc
index d79f3f5..1227e60 100644
--- a/hscript/meta.cc
+++ b/hscript/meta.cc
@@ -722,6 +722,18 @@ const std::string my_arch(const Horizon::Script *script) {
         return "pmmx";
 #   elif defined(__x86_64__)
         return "x86_64";
+#   elif defined(__mips64)
+#       if defined(__BYTE_ORDER__) && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
+        return "mips64el";
+#       else  /* If byte order is not defined, default to big endian. */
+        return "mips64";
+#       endif
+#   elif defined(__mips__)
+#       if defined(__BYTE_ORDER__) && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
+        return "mipsel";
+#       else  /* If byte order is not defined, default to big endian. */
+        return "mips";
+#       endif
 #   else
 #       error Unknown architecture.
 #   endif
@@ -755,6 +767,10 @@ bool Bootloader::validate() const {
         const static std::set<std::string> valid_x86 = {"grub-bios",
                                                         "grub-efi"};
         return valid_x86.find(this->value()) != valid_x86.end();
+    } else if(arch == "mips64" || arch == "mips" ||
+              arch == "mips64el" || arch == "mipsel") {
+        const static std::set<std::string> valid_mips = {};
+        return valid_mips.find(this->value()) != valid_mips.end();
     } else {
         output_error(pos, "bootloader: unknown architecture", arch);
         return false;
diff --git a/ui/qt5/horizonwizard.cc b/ui/qt5/horizonwizard.cc
index 6c2ea9e..d87e041 100644
--- a/ui/qt5/horizonwizard.cc
+++ b/ui/qt5/horizonwizard.cc
@@ -352,6 +352,18 @@ HorizonWizard::HorizonWizard(QWidget *parent) : QWizard(parent) {
     arch = pmmx;
 #   elif defined(__x86_64__)
     arch = x86_64;
+#   elif defined(__mips64)
+#       if defined(__BYTE_ORDER__) && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
+    arch = mips64el;
+#       else  /* If byte order is not defined, default to big endian. */
+    arch = mips64;
+#       endif
+#   elif defined(__mips__)
+#       if defined(__BYTE_ORDER__) && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
+    arch = mipsel;
+#       else  /* If byte order is not defined, default to big endian. */
+    arch = mips;
+#       endif
 #   else
 #       error You are attempting to compile the Installation Environment UI \
 on an unknown architecture.  Please add a definition to horizonwizard.hh, a \
@@ -551,6 +563,19 @@ QString HorizonWizard::toHScript() {
         lines << "signingkey https://distfiles.adelielinux.org/adelie/keys/x86-1@packages.adelielinux.org.pub";
         lines << "signingkey https://distfiles.adelielinux.org/adelie/keys/x86-2@packages.adelielinux.org.pub";
         break;
+    case mips64:
+        lines << "arch mips64";
+	/* XXX: MIPS signing keys are needed before we ship anything. */
+        break;
+    case mips:
+        lines << "arch mips";
+        break;
+    case mips64el:
+        lines << "arch mips64el";
+        break;
+    case mipsel:
+        lines << "arch mipsel";
+        break;
     case UnknownCPU:
         /* no arch line.  hopefully it's run on the target. */
         break;
diff --git a/ui/qt5/horizonwizard.hh b/ui/qt5/horizonwizard.hh
index bf53ae0..8af9df7 100644
--- a/ui/qt5/horizonwizard.hh
+++ b/ui/qt5/horizonwizard.hh
@@ -96,6 +96,10 @@ public:
     enum Arch {
         aarch64,
         armv7,
+	mips,
+	mips64,
+	mipsel,
+	mips64el,
         pmmx,
         ppc,
         ppc64,