[coreboot-gerrit] Change in coreboot[master]: soc/intel/common: Add function to get soc reserved memory size
Subrata Banik (Code Review)
gerrit at coreboot.org
Thu Sep 14 14:32:09 CEST 2017
Subrata Banik has uploaded this change for review. ( https://review.coreboot.org/21539
Change subject: soc/intel/common: Add function to get soc reserved memory size
......................................................................
soc/intel/common: Add function to get soc reserved memory size
This patch ensures to consider soc reserved memory size while
allocating DRAM based resources.
Change-Id: I587a9c1ea44f2dbf67099fef03d0ff92bc44f242
Signed-off-by: Subrata Banik <subrata.banik at intel.com>
---
M src/soc/intel/common/block/include/intelblocks/systemagent.h
M src/soc/intel/common/block/systemagent/systemagent.c
2 files changed, 16 insertions(+), 4 deletions(-)
git pull ssh://review.coreboot.org:29418/coreboot refs/changes/39/21539/1
diff --git a/src/soc/intel/common/block/include/intelblocks/systemagent.h b/src/soc/intel/common/block/include/intelblocks/systemagent.h
index 4ca19e6..f6b9a0b 100644
--- a/src/soc/intel/common/block/include/intelblocks/systemagent.h
+++ b/src/soc/intel/common/block/include/intelblocks/systemagent.h
@@ -99,5 +99,7 @@
* struct sa_mmio_descriptor along with resource count.
*/
void soc_add_fixed_mmio_resources(struct device *dev, int *resource_cnt);
+/* SoC call to summarize all Intel Reserve MMIO size and report to SA */
+size_t soc_reversed_mmio_size(void);
#endif /* SOC_INTEL_COMMON_BLOCK_SA_H */
diff --git a/src/soc/intel/common/block/systemagent/systemagent.c b/src/soc/intel/common/block/systemagent/systemagent.c
index cb7af41..23e7984 100644
--- a/src/soc/intel/common/block/systemagent/systemagent.c
+++ b/src/soc/intel/common/block/systemagent/systemagent.c
@@ -36,6 +36,11 @@
/* no-op */
}
+__attribute__((weak)) size_t soc_reversed_mmio_size(void)
+{
+ return 0;
+}
+
/*
* Add all known fixed MMIO ranges that hang off the host bridge/memory
* controller device.
@@ -134,12 +139,16 @@
{
uintptr_t base_k, touud_k;
size_t dpr_size = 0, size_k;
+ size_t reserved_mmio_size;
uint64_t sa_map_values[MAX_MAP_ENTRIES];
uintptr_t top_of_ram;
int index = *resource_count;
if (IS_ENABLED(CONFIG_SA_ENABLE_DPR))
dpr_size = sa_get_dpr_size();
+
+ /* Get SoC reserve memory size as per user selection */
+ reserved_mmio_size = soc_reversed_mmio_size();
top_of_ram = (uintptr_t)cbmem_top();
@@ -155,13 +164,14 @@
sa_get_mem_map(dev, &sa_map_values[0]);
- /* top_of_ram -> TSEG - DPR */
+ /* top_of_ram -> TSEG - DPR - Intel Reserve Memory SIze*/
base_k = top_of_ram;
- size_k = sa_map_values[SA_TSEG_REG] - dpr_size - base_k;
+ size_k = sa_map_values[SA_TSEG_REG] - dpr_size - base_k
+ - reserved_mmio_size;
mmio_resource(dev, index++, base_k / KiB, size_k / KiB);
- /* TSEG - DPR -> BGSM */
- base_k = sa_map_values[SA_TSEG_REG] - dpr_size;
+ /* TSEG - DPR - Intel Reserve Memory SIze -> BGSM */
+ base_k = sa_map_values[SA_TSEG_REG] - dpr_size - reserved_mmio_size;
size_k = sa_map_values[SA_BGSM_REG] - base_k;
reserved_ram_resource(dev, index++, base_k / KiB, size_k / KiB);
--
To view, visit https://review.coreboot.org/21539
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Gerrit-Project: coreboot
Gerrit-Branch: master
Gerrit-MessageType: newchange
Gerrit-Change-Id: I587a9c1ea44f2dbf67099fef03d0ff92bc44f242
Gerrit-Change-Number: 21539
Gerrit-PatchSet: 1
Gerrit-Owner: Subrata Banik <subrata.banik at intel.com>
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