[2/4] hw/armv7m_nvic: Correctly register GIC region when setting up NVIC

Submitted by Peter Maydell on Sept. 26, 2012, 4:13 p.m.

Details

Message ID 1348676015-16547-3-git-send-email-peter.maydell@linaro.org
State New
Headers show

Commit Message

Peter Maydell Sept. 26, 2012, 4:13 p.m.
From: Meador Inge <meadori@codesourcery.com>

When setting up the NVIC memory regions the memory range
0x100..0xcff is aliased to an IO memory region that belongs
to the ARM GIC.  This aliased region should be added to the
NVIC memory container, but the actual GIC IO memory region
was being added instead.  This mixup was causing the wrong
IO memory access functions to be called when accessing parts
of the NVIC memory.

Signed-off-by: Meador Inge <meadori@codesourcery.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
 hw/armv7m_nvic.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

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diff --git a/hw/armv7m_nvic.c b/hw/armv7m_nvic.c
index 6a0832e..5c09116 100644
--- a/hw/armv7m_nvic.c
+++ b/hw/armv7m_nvic.c
@@ -489,7 +489,8 @@  static int armv7m_nvic_init(SysBusDevice *dev)
      */
     memory_region_init_alias(&s->gic_iomem_alias, "nvic-gic", &s->gic.iomem,
                              0x100, 0xc00);
-    memory_region_add_subregion_overlap(&s->container, 0x100, &s->gic.iomem, 1);
+    memory_region_add_subregion_overlap(&s->container, 0x100,
+                                        &s->gic_iomem_alias, 1);
     /* Map the whole thing into system memory at the location required
      * by the v7M architecture.
      */