From dbba25aa24f86c1f8c3a0589c82985840adc1b6b Mon Sep 17 00:00:00 2001
From: Richard Qin <richard.qin.x@gmail.com>
Date: Wed, 31 Dec 2025 18:00:55 +0800
Subject: dev:Refactor Memory Management and Process Management

---
 src/boot/entry.S | 26 +++++++++++++++++++++-----
 1 file changed, 21 insertions(+), 5 deletions(-)

(limited to 'src/boot')

diff --git a/src/boot/entry.S b/src/boot/entry.S
index 924d7d6..6d75bcf 100644
--- a/src/boot/entry.S
+++ b/src/boot/entry.S
@@ -2,13 +2,29 @@
 .global _start
 
 _start:
-    la t0, g_dtb_addr
-    sd a1, 0(t0)
-
     mv tp, a0
 
-    la sp, stack_top
+    la t0, stack_base
+    li t1, 4096
+    addi t2, a0, 1
+    mul t1, t1, t2
+    add sp, t0, t1
+
+    bnez a0, .L_jump_main
+
+    la t0, sbss
+    la t1, ebss
+.L_clear_bss:
+    bge t0, t1, .L_save_dtb
+    sd zero, 0(t0)
+    addi t0, t0, 8
+    j .L_clear_bss
+
+.L_save_dtb:
+    la t0, g_dtb_addr
+    sd a1, 0(t0)
 
+.L_jump_main:
     call kernel_main
 
 .L_park:
@@ -19,7 +35,7 @@ _start:
 .align 4
 .global stack_top
 stack_base:
-    .space 4096 * 4
+    .space 4096 * 8
 stack_top:
 
 .align 8
-- 
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