From 45f944c52e592c0386d3cb44dcecdedb67a71ec2 Mon Sep 17 00:00:00 2001
From: Richard Qin <richard.qin.x@gmail.com>
Date: Wed, 13 May 2026 15:58:19 +0800
Subject: feat: add boot parameters management with initialization and access
 functions

---
 na/include/lume/console.h |  1 +
 na/kernel/boot_params.cc  | 45 +++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 46 insertions(+)
 create mode 100644 na/kernel/boot_params.cc

diff --git a/na/include/lume/console.h b/na/include/lume/console.h
index df129cf..a4fdf3f 100644
--- a/na/include/lume/console.h
+++ b/na/include/lume/console.h
@@ -7,6 +7,7 @@
 
 extern "C" void early_putc(char c);
 extern "C" void early_puts(const char* s);
+extern "C" void console_set_mmu_enabled();
 
 /* Early UART discovery via raw FDT parsing. */
 void console_early_init(uint64 fdt_paddr);
diff --git a/na/kernel/boot_params.cc b/na/kernel/boot_params.cc
new file mode 100644
index 0000000..e5d4ee5
--- /dev/null
+++ b/na/kernel/boot_params.cc
@@ -0,0 +1,45 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/* Copyright (C) 2026 Richard Qin */
+
+#include <lume/boot_params.h>
+
+static BootParams g_boot_params = {};
+
+static void boot_params_init_once()
+{
+    if (g_boot_params.magic == kBootParamsMagic) {
+        return;
+    }
+    g_boot_params = {};
+    g_boot_params.magic = kBootParamsMagic;
+    g_boot_params.version = kBootParamsVersion;
+    g_boot_params.size = static_cast<uint32>(sizeof(BootParams));
+}
+
+void boot_params_init_fdt(uint64 fdt_paddr)
+{
+    boot_params_init_once();
+    g_boot_params.fdt_ptr = fdt_paddr;
+    g_boot_params.seed_source = BOOT_SEED_NONE;
+}
+
+const BootParams* boot_params_get()
+{
+    if (g_boot_params.magic != kBootParamsMagic) {
+        return nullptr;
+    }
+    return &g_boot_params;
+}
+
+void boot_params_set_image_info(uint64 phys_base, uint64 image_size,
+                                uint64 reloc_offset, uint64 reloc_size,
+                                uint32 comp, uint32 image_flags)
+{
+    boot_params_init_once();
+    g_boot_params.kimage_phys_base = phys_base;
+    g_boot_params.kimage_size = image_size;
+    g_boot_params.kimage_reloc_offset = reloc_offset;
+    g_boot_params.kimage_reloc_size = reloc_size;
+    g_boot_params.kimage_comp = comp;
+    g_boot_params.kimage_flags = image_flags;
+}
-- 
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