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[PATCH 2/2] hw/misc/bcm2835_property: Add dummy Get/Set GPIO virt buf me
From: |
Benjamin Herrenschmidt |
Subject: |
[PATCH 2/2] hw/misc/bcm2835_property: Add dummy Get/Set GPIO virt buf messages |
Date: |
Sun, 17 Oct 2021 18:48:36 +1100 |
User-agent: |
Evolution 3.36.5-0ubuntu1 |
Without these the RaspiOS kernel tries to ioremap some bogus address
and dumps a backtrace in the console at boot. These work around it.
The virt-gpio driver still fails to initialize but much more cleanly
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
hw/misc/bcm2835_property.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/hw/misc/bcm2835_property.c b/hw/misc/bcm2835_property.c
index b958fa6a5c..62037c0630 100644
--- a/hw/misc/bcm2835_property.c
+++ b/hw/misc/bcm2835_property.c
@@ -274,6 +274,13 @@ static void
bcm2835_property_mbox_push(BCM2835PropertyState *s, uint32_t value)
resplen = 4;
break;
+ case 0x00048020: /* Set GPIO virt buf */
+ /* fall through */
+ case 0x00040010: /* Get GPIO virt buf */
+ stl_le_phys(&s->dma_as, value + 12, 0);
+ resplen = 4;
+ break;
+
case 0x00060001: /* Get DMA channels */
/* channels 2-5 */
stl_le_phys(&s->dma_as, value + 12, 0x003C);
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