From 4dffc92abf8f6a6e9b503c9809caaa99795d7a00 Mon Sep 17 00:00:00 2001
From: Kimplul <kimi.h.kuparinen@gmail.com>
Date: Sun, 19 Sep 2021 17:46:26 +0300
Subject: Added basic awareness of kernel size/bounds

---
 arch/riscv/conf/init-link.S   | 21 +++++++++++++++++++++
 arch/riscv/conf/kernel-link.S | 16 ++++++++++++++++
 2 files changed, 37 insertions(+)

(limited to 'arch/riscv/conf')

diff --git a/arch/riscv/conf/init-link.S b/arch/riscv/conf/init-link.S
index 2bb904b..86e692e 100644
--- a/arch/riscv/conf/init-link.S
+++ b/arch/riscv/conf/init-link.S
@@ -5,8 +5,29 @@ ENTRY(_start)
 
 SECTIONS {
 	. = ABSOLUTE(PM_KERN);
+	__init_start = .;
+
+	/* objcopy only copies these three sections (as far as I'm aware) into the
+	   produces binary, so __init_end should point to the correct location in the
+	   final binary
+	 */
 	.text ALIGN(4K) : AT(0) {
 		*(.init.start)
 		*(.text*);
 	}
+
+	.rodata : {
+		*(.rodata*)
+	}
+
+	.data : {
+		*(.data*)
+	}
+
+	.bss : {
+		*(.bss*) *(COMMON)
+	}
+
+	__kernel_size = <KERNEL_SIZE>;
+	__init_end = . ;
 }
diff --git a/arch/riscv/conf/kernel-link.S b/arch/riscv/conf/kernel-link.S
index 4592086..1ccdc77 100644
--- a/arch/riscv/conf/kernel-link.S
+++ b/arch/riscv/conf/kernel-link.S
@@ -5,8 +5,24 @@ ENTRY(main)
 
 SECTIONS {
 	. = ABSOLUTE(VM_KERN);
+	__kernel_start = .;
+
 	.text ALIGN(4K) : AT(0) {
 		*(.kernel.start);
 		*(.text*);
 	}
+
+	.rodata : {
+		*(.rodata*)
+	}
+
+	.data : {
+		*(.data*)
+	}
+
+	.bss : {
+		*(.bss*) *(COMMON)
+	}
+
+	__kernel_end = .;
 }
-- 
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