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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:27:49 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:27:49 +0000
commitace9429bb58fd418f0c81d4c2835699bddf6bde6 (patch)
treeb2d64bc10158fdd5497876388cd68142ca374ed3 /arch/csky/kernel/head.S
parentInitial commit. (diff)
downloadlinux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.tar.xz
linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.zip
Adding upstream version 6.6.15.upstream/6.6.15
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'arch/csky/kernel/head.S')
-rw-r--r--arch/csky/kernel/head.S42
1 files changed, 42 insertions, 0 deletions
diff --git a/arch/csky/kernel/head.S b/arch/csky/kernel/head.S
new file mode 100644
index 0000000000..7e3e4f15b0
--- /dev/null
+++ b/arch/csky/kernel/head.S
@@ -0,0 +1,42 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+
+#include <linux/linkage.h>
+#include <linux/init.h>
+#include <asm/page.h>
+#include <abi/entry.h>
+
+__HEAD
+ENTRY(_start)
+ SETUP_MMU
+
+ /* set stack point */
+ lrw r6, init_thread_union + THREAD_SIZE
+ mov sp, r6
+
+ jmpi csky_start
+END(_start)
+
+#ifdef CONFIG_SMP
+.align 10
+ENTRY(_start_smp_secondary)
+ SETUP_MMU
+
+#ifdef CONFIG_PAGE_OFFSET_80000000
+ lrw r6, secondary_msa1
+ ld.w r6, (r6, 0)
+ mtcr r6, cr<31, 15>
+#endif
+
+ lrw r6, secondary_pgd
+ ld.w r6, (r6, 0)
+ mtcr r6, cr<28, 15>
+ mtcr r6, cr<29, 15>
+
+ /* set stack point */
+ lrw r6, secondary_stack
+ ld.w r6, (r6, 0)
+ mov sp, r6
+
+ jmpi csky_start_secondary
+END(_start_smp_secondary)
+#endif