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authorSubrata Banik <subrata.banik@intel.com>2017-09-21 20:23:41 +0530
committerAaron Durbin <adurbin@chromium.org>2017-09-22 16:23:30 +0000
commitfdddc463cec6eb10e85b5dd42edf13faceb35fe0 (patch)
tree860eab060df7f323a50854802d4b739943d11e3f /src/soc/intel
parent73b8503183a552fa31fb55d539e9cc2ad4492e8d (diff)
soc/intel/skylake: Calculate soc reserved memory size
This patch implements soc override function to calculate reserve memory size (PRMRR, TraceHub, PTT etc). System memory should reserve those memory ranges. BRANCH=none BUG=b:63974384 TEST=Ensures DRAM based resource allocation has taken care of intel soc reserved ranges. Change-Id: I19583f7d18ca11c3a58eb61c927e5c3c3b65d2ec Signed-off-by: Subrata Banik <subrata.banik@intel.com> Reviewed-on: https://review.coreboot.org/21540 Reviewed-by: Aaron Durbin <adurbin@chromium.org> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src/soc/intel')
-rw-r--r--src/soc/intel/skylake/memmap.c25
1 files changed, 22 insertions, 3 deletions
diff --git a/src/soc/intel/skylake/memmap.c b/src/soc/intel/skylake/memmap.c
index 0d31ea8c06..485b8c4cbb 100644
--- a/src/soc/intel/skylake/memmap.c
+++ b/src/soc/intel/skylake/memmap.c
@@ -255,7 +255,7 @@ static size_t calculate_reserved_mem_size(uintptr_t dram_base,
* the base registers from each other to determine sizes of the regions. In
* other words, the memory map is in a fixed order no matter what.
*/
-static uintptr_t calculate_dram_base(void)
+static uintptr_t calculate_dram_base(size_t *reserved_mem_size)
{
uintptr_t dram_base;
const struct device *dev;
@@ -271,15 +271,34 @@ static uintptr_t calculate_dram_base(void)
dram_base -= calculate_traditional_mem_size(dram_base, dev);
/* Get Intel Reserved Memory Range Size */
- dram_base -= calculate_reserved_mem_size(dram_base, dev);
+ *reserved_mem_size = calculate_reserved_mem_size(dram_base, dev);
+
+ dram_base -= *reserved_mem_size;
return dram_base;
}
+/*
+ * SoC implementation
+ *
+ * SoC call to summarize all Intel Reserve MMIO size and report to SA
+ */
+size_t soc_reserved_mmio_size(void)
+{
+ size_t chipset_mem_size;
+
+ calculate_dram_base(&chipset_mem_size);
+
+ /* Get Intel Reserved Memory Range Size */
+ return chipset_mem_size;
+}
+
/* Fill up memory layout information */
void fill_soc_memmap_ebda(struct ebda_config *cfg)
{
- cfg->tolum_base = calculate_dram_base();
+ size_t chipset_mem_size;
+
+ cfg->tolum_base = calculate_dram_base(&chipset_mem_size);
}
void cbmem_top_init(void)