pw_toolchain: Add ARM Cortex-M55 toolchain

Bug: 361691368

Change-Id: Id69b311cb22b1279694239a0b7970f2f98fb9b49
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/231631
Reviewed-by: Alexei Frolov <[email protected]>
Reviewed-by: Armando Montanez <[email protected]>
Commit-Queue: Jimmy Chen <[email protected]>
Lint: Lint 🤖 <[email protected]>

pw_toolchain/arm_clang/BUILD.gn

@@ -113,3 +113,11 @@ pw_clang_arm_config("cortex_m33f") {
   asmflags = cflags
   ldflags = cflags
 }
+
+pw_clang_arm_config("cortex_m55") {
+  cflags = [ "-mcpu=cortex-m55" ]
+  cflags += cortex_m_common_flags
+  cflags += cortex_m_software_fpu_flags
+  asmflags = cflags
+  ldflags = cflags
+}

pw_toolchain/arm_clang/toolchains.gni

@@ -85,6 +85,11 @@ _cortex_m33f = [
   "$dir_pw_toolchain/arm_clang:cortex_m33f",
 ]
 
+_cortex_m55 = [
+  "$dir_pw_toolchain/arm_clang:nosys",
+  "$dir_pw_toolchain/arm_clang:cortex_m55",
+]
+
 # Describes ARM clang toolchains for specific targets.
 pw_toolchain_arm_clang = {
   cortex_m0plus_debug = {
@@ -303,6 +308,33 @@ pw_toolchain_arm_clang = {
                         [ "$dir_pw_build:optimize_size_clang" ]
     }
   }
+  cortex_m55_debug = {
+    name = "arm_clang_cortex_m55_debug"
+    forward_variables_from(_arm_clang_toolchain, "*")
+    defaults = {
+      forward_variables_from(pigweed_arm_clang_defaults, "*")
+      default_configs = pigweed_default_configs + _cortex_m55 +
+                        [ "$dir_pw_build:optimize_debugging" ]
+    }
+  }
+  cortex_m55_speed_optimized = {
+    name = "arm_clang_cortex_m55_speed_optimized"
+    forward_variables_from(_arm_clang_toolchain, "*")
+    defaults = {
+      forward_variables_from(pigweed_arm_clang_defaults, "*")
+      default_configs = pigweed_default_configs + _cortex_m55 +
+                        [ "$dir_pw_build:optimize_speed" ]
+    }
+  }
+  cortex_m55_size_optimized = {
+    name = "arm_clang_cortex_m55_size_optimized"
+    forward_variables_from(_arm_clang_toolchain, "*")
+    defaults = {
+      forward_variables_from(pigweed_arm_clang_defaults, "*")
+      default_configs = pigweed_default_configs + _cortex_m55 +
+                        [ "$dir_pw_build:optimize_size_clang" ]
+    }
+  }
 }
 
 # This list just contains the members of the above scope for convenience to make
@@ -333,4 +365,7 @@ pw_toolchain_arm_clang_list = [
   pw_toolchain_arm_clang.cortex_m33f_debug,
   pw_toolchain_arm_clang.cortex_m33f_speed_optimized,
   pw_toolchain_arm_clang.cortex_m33f_size_optimized,
+  pw_toolchain_arm_clang.cortex_m55_debug,
+  pw_toolchain_arm_clang.cortex_m55_speed_optimized,
+  pw_toolchain_arm_clang.cortex_m55_size_optimized,
 ]

pw_toolchain/arm_gcc/BUILD.gn

@@ -96,6 +96,12 @@ config("cortex_m33") {
   ldflags = cflags
 }
 
+config("cortex_m55") {
+  cflags = [ "-mcpu=cortex-m55" ]
+  asmflags = cflags
+  ldflags = cflags
+}
+
 config("cortex_a32") {
   cflags = [ "-mcpu=cortex-a32" ]
   asmflags = cflags

pw_toolchain/arm_gcc/toolchains.gni

@@ -155,6 +155,12 @@ _cortex_m33f = [
   "$dir_pw_toolchain/arm_gcc:cortex_hardware_fpu_v5_sp",
 ]
 
+_cortex_m55 = [
+  "$dir_pw_toolchain/arm_gcc:cortex_common",
+  "$dir_pw_toolchain/arm_gcc:cortex_m55",
+  "$dir_pw_toolchain/arm_gcc:cortex_software_fpu",
+]
+
 _cortex_a32 = [
   "$dir_pw_toolchain/arm_gcc:cortex_common",
   "$dir_pw_toolchain/arm_gcc:cortex_a32",
@@ -355,6 +361,31 @@ pw_toolchain_arm_gcc = {
     }
   }
 
+  cortex_m55_debug = {
+    name = "arm_gcc_cortex_m55_debug"
+    forward_variables_from(arm_gcc_toolchain_tools, "*")
+    defaults = {
+      default_configs = pigweed_default_configs + _arm_gcc + _cortex_m55 +
+                        [ "$dir_pw_build:optimize_debugging" ]
+    }
+  }
+  cortex_m55_speed_optimized = {
+    name = "arm_gcc_cortex_m55_speed_optimized"
+    forward_variables_from(arm_gcc_toolchain_tools, "*")
+    defaults = {
+      default_configs = pigweed_default_configs + _arm_gcc + _cortex_m55 +
+                        [ "$dir_pw_build:optimize_speed" ]
+    }
+  }
+  cortex_m55_size_optimized = {
+    name = "arm_gcc_cortex_m55_size_optimized"
+    forward_variables_from(arm_gcc_toolchain_tools, "*")
+    defaults = {
+      default_configs = pigweed_default_configs + _arm_gcc + _cortex_m55 +
+                        [ "$dir_pw_build:optimize_size" ]
+    }
+  }
+
   cortex_a32_debug = {
     name = "arm_gcc_cortex_a32_debug"
     forward_variables_from(arm_gcc_toolchain_tools, "*")
@@ -409,6 +440,9 @@ pw_toolchain_arm_gcc_list = [
   pw_toolchain_arm_gcc.cortex_m33f_debug,
   pw_toolchain_arm_gcc.cortex_m33f_speed_optimized,
   pw_toolchain_arm_gcc.cortex_m33f_size_optimized,
+  pw_toolchain_arm_gcc.cortex_m55_debug,
+  pw_toolchain_arm_gcc.cortex_m55_speed_optimized,
+  pw_toolchain_arm_gcc.cortex_m55_size_optimized,
   pw_toolchain_arm_gcc.cortex_a32_debug,
   pw_toolchain_arm_gcc.cortex_a32_speed_optimized,
   pw_toolchain_arm_gcc.cortex_a32_size_optimized,