From c8de43bf43242c4ebac3d0ecb8e7951fe2371506 Mon Sep 17 00:00:00 2001
From: Nathan Ringo <nathan@remexre.com>
Date: Sat, 24 Feb 2024 22:03:49 -0600
Subject: Initial commit

---
 boards/qemu-virt/qemu-virt.s | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)
 create mode 100644 boards/qemu-virt/qemu-virt.s

(limited to 'boards/qemu-virt/qemu-virt.s')

diff --git a/boards/qemu-virt/qemu-virt.s b/boards/qemu-virt/qemu-virt.s
new file mode 100644
index 0000000..4813b57
--- /dev/null
+++ b/boards/qemu-virt/qemu-virt.s
@@ -0,0 +1,23 @@
+.section .text.start
+
+.extern main
+
+.global _start
+_start:
+	# Have harts other than 0 spin until hart0 wakes them up.
+	csrr a0, mhartid
+	c.bnez a0, wait_for_hart0
+
+	# Set up hart0's stack.
+	la sp, hart0_initial_stack_top
+	call hart0_boot
+
+	# Fall through to a spin loop.
+halt:
+	j halt
+
+.section .text
+
+wait_for_hart0:
+	# TODO
+	j halt
-- 
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