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arm64: ofw: respect the nonposted-mmio prop in OF_decode_addr()

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This is the only mapping remaining which needs to respect nonposted-mmio
to avoid breaking the boot on Apple silicon.

Reviewed by:	andrew
Differential Revision:	https://reviews.freebsd.org/D38920
This commit is contained in:
Kyle Evans 2023-03-07 00:15:32 -06:00 committed by Oscar Zhao
parent d263d4ab8a
commit c6582381a7
1 changed files with 8 additions and 2 deletions
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10
sys/arm64/arm64/ofw_machdep.c
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@ -43,7 +43,8 @@ OF_decode_addr(phandle_t dev, int regno, bus_space_tag_t *tag,
{
bus_addr_t addr;
bus_size_t size;
int err;
phandle_t parent;
int err, flags;
err = ofw_reg_to_paddr(dev, regno, &addr, &size, NULL);
if (err != 0)
@ -54,5 +55,10 @@ OF_decode_addr(phandle_t dev, int regno, bus_space_tag_t *tag,
if (sz != NULL)
*sz = size;
return (bus_space_map(*tag, addr, size, 0, handle));
flags = 0;
parent = OF_parent(dev);
if (parent > 0 && OF_hasprop(parent, "nonposted-mmio"))
flags |= BUS_SPACE_MAP_NONPOSTED;
return (bus_space_map(*tag, addr, size, flags, handle));
}