From: Luca Fancellu <luca.fance...@arm.com>
Implement remove_early_mappings for MPU systems.
Signed-off-by: Luca Fancellu <luca.fance...@arm.com>
Signed-off-by: Hari Limaye <hari.lim...@arm.com>
Reviewed-by: Michal Orzel <michal.or...@amd.com>
---
Changes from v1:
- Add Ayan's R-b
Changes from v2:
- Remove full stop
- Remove sanity check for `mapped_fdt_paddr == INVALID_PADDR`
Changes from v3:
- Drop Ayan's R-b
- Add Michals's R-b
---
xen/arch/arm/mpu/setup.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/xen/arch/arm/mpu/setup.c b/xen/arch/arm/mpu/setup.c
index 2ef703757f..163573b932 100644
--- a/xen/arch/arm/mpu/setup.c
+++ b/xen/arch/arm/mpu/setup.c
@@ -96,7 +96,11 @@ void __init copy_from_paddr(void *dst, paddr_t paddr,
unsigned long len)
void __init remove_early_mappings(void)
{
- BUG_ON("unimplemented");
+ int rc = destroy_xen_mappings(round_pgdown(mapped_fdt_base),
+ mapped_fdt_limit);
+
+ if ( rc )
+ panic("Unable to unmap the device-tree\n");
}
/*
--
2.34.1
