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amd/pi/00670F00: Reserve A0000-FFFFF

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Claim memory-mapped regions in the legacy area.

Claim an MMIO resource for the A000 and B000 segments, and reserved
resource for C000 through F000 segments.

These changes allow code and information to be retained in the event
unused regions get wiped.

Original-Signed-off-by: Marshall Dawson <marshalldawson3rd@gmail.com>
Reviewed-by: Marc Jones <marcj303@gmail.com>
(cherry picked from commit d612d4fe69881609d42053496409c452e1014947)

Change-Id: I9c47c919bbfd0edccf752e052f32d1e47c1a1324
Signed-off-by: Marc Jones <marcj303@gmail.com>
Reviewed-on: https://review.coreboot.org/19156
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Tested-by: build bot (Jenkins)
This commit is contained in:
Marshall Dawson
2017-02-18 11:10:34 -07:00
committed by Marc Jones
parent d0e465456e
commit 6a7ebd4e08
1 changed files with 8 additions and 0 deletions
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8
src/northbridge/amd/pi/00670F00/northbridge.c
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@@ -850,6 +850,14 @@ static void domain_set_resources(device_t dev)
assign_resources(link); assign_resources(link);
} }
} }
/*
* Reserve everything between A segment and 1MB:
*
* 0xa0000 - 0xbffff: legacy VGA
* 0xc0000 - 0xfffff: RAM
*/
mmio_resource(dev, 0xa0000, 0xa0000 / KiB, 0x20000 / KiB);
reserved_ram_resource(dev, 0xc0000, 0xc0000 / KiB, 0x40000 / KiB);
} }
static struct device_operations pci_domain_ops = { static struct device_operations pci_domain_ops = {