[coreboot-gerrit] Patch set updated for coreboot: soc/intel/apollolake: Avoid marking 0xe0000-0xfffff region usable
Andrey Petrov (andrey.petrov@intel.com)
gerrit at coreboot.org
Sat Apr 23 23:56:15 CEST 2016
Andrey Petrov (andrey.petrov at intel.com) just uploaded a new patch set to gerrit, which you can find at https://review.coreboot.org/14466
-gerrit
commit 2ade04b6ba01c215735aafa4dd94e6b848ae589f
Author: Andrey Petrov <andrey.petrov at intel.com>
Date: Thu Apr 21 14:59:12 2016 -0700
soc/intel/apollolake: Avoid marking 0xe0000-0xfffff region usable
coreboot writes RDSP at 0xf0000. Since depthcharge wipes usable
memory regions before starting, kernel can't find RDSP.
Change-Id: I584bd5d24248cf38f46342615cf3b0252a821b2a
Signed-off-by: Andrey Petrov <andrey.petrov at intel.com>
---
src/soc/intel/apollolake/northbridge.c | 10 ++++++----
1 file changed, 6 insertions(+), 4 deletions(-)
diff --git a/src/soc/intel/apollolake/northbridge.c b/src/soc/intel/apollolake/northbridge.c
index 00e3501..b3ae705 100644
--- a/src/soc/intel/apollolake/northbridge.c
+++ b/src/soc/intel/apollolake/northbridge.c
@@ -109,8 +109,12 @@ static int mc_add_dram_resources(device_t dev, int index)
/* 0 - > 0xa0000: 640kb of DOS memory. Not enough for anybody nowadays */
ram_resource(dev, index++, 0, 640);
- /* 0xc0000 -> top_of_ram, skipping the legacy VGA region */
- base_k = 768;
+ /* 0xa0000 - 0xbffff: legacy VGA */
+ mmio_resource(dev, index++, 640, 128);
+
+ /* 0xc0000 -> 0xfffff: leave without e820 entry, as it has special uses */
+ /* 0x100000 -> top_of_ram */
+ base_k = 1024;
size_k = (tseg / KiB) - base_k;
ram_resource(dev, index++, base_k, size_k);
@@ -128,8 +132,6 @@ static int mc_add_dram_resources(device_t dev, int index)
size_k = (touud / KiB) - base_k;
ram_resource(dev, index++, base_k, size_k);
- /* 0xa0000 - 0xbffff: legacy VGA */
- mmio_resource(dev, index++, 640, 128);
return index;
}
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