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commit d28c15bd06b7bfdcb268a4239b149222a1c6f5ca
Author: buxiasen <buxia...@xiaomi.com>
AuthorDate: Fri Apr 25 17:56:30 2025 +0800
arch/arm/qemu: fix mmu not enabled when smp
If smp enabled, mmu default disabled in arm_head.S,
We have to re-enable it in arm_boot per-chip.
Causing knsh-smp failed with user-space memory access
Signed-off-by: buxiasen <buxia...@xiaomi.com>
---
arch/arm/src/qemu/qemu_boot.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/arch/arm/src/qemu/qemu_boot.c b/arch/arm/src/qemu/qemu_boot.c
index f45b980faf..bab72cb119 100644
--- a/arch/arm/src/qemu/qemu_boot.c
+++ b/arch/arm/src/qemu/qemu_boot.c
@@ -37,6 +37,7 @@
#include "qemu_userspace.h"
#include "smp.h"
#include "gic.h"
+#include "scu.h"
#ifdef CONFIG_DEVICE_TREE
# include <nuttx/fdt.h>
@@ -87,6 +88,12 @@ void arm_boot(void)
qemu_setupmappings();
#endif
+#ifdef CONFIG_SMP
+ /* Enable SMP cache coherency for CPU0 */
+
+ arm_enable_smp(0);
+#endif
+
arm_fpuconfig();
#ifdef CONFIG_ARM_PSCI
