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| author | Lee Leahy <leroy.p.leahy@intel.com> | 2016-07-10 14:13:19 -0700 |
|---|---|---|
| committer | Lee Leahy <leroy.p.leahy@intel.com> | 2016-07-12 18:51:09 +0200 |
| commit | f626b9311daa77f5f439bdcc4336839cd93844ee (patch) | |
| tree | 8941aa71898973687994ba55641ecaf8f37ce822 | |
| parent | 660c67a01f93817efebf312c5f6d685e8329312e (diff) | |
| download | coreboot-f626b9311daa77f5f439bdcc4336839cd93844ee.tar.xz | |
soc/intel/quark: Set CBMEM top from HW register
Properly obtain the top of memory address from the hardware registers
set by FSP.
TEST=Build and run on Galileo Gen2
Change-Id: I7681d32112408b8358b4dad67f8d69581c7dde2e
Signed-off-by: Lee Leahy <leroy.p.leahy@intel.com>
Reviewed-on: https://review.coreboot.org/15594
Tested-by: build bot (Jenkins)
Reviewed-by: Martin Roth <martinroth@google.com>
| -rw-r--r-- | src/soc/intel/quark/memmap.c | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/src/soc/intel/quark/memmap.c b/src/soc/intel/quark/memmap.c index 71e478433e..351fab7f1c 100644 --- a/src/soc/intel/quark/memmap.c +++ b/src/soc/intel/quark/memmap.c @@ -15,6 +15,8 @@ #include <cbmem.h> #include <fsp/memmap.h> +#include <soc/QuarkNcSocId.h> +#include <soc/reg_access.h> size_t mmap_region_granularity(void) { @@ -24,6 +26,16 @@ size_t mmap_region_granularity(void) void *cbmem_top(void) { - /* TODO: Get this dynamically*/ - return (void *)0x0afd0000; + UINT32 top_of_memory; + + /* Determine the TSEG base */ + top_of_memory = reg_host_bridge_unit_read(QNC_MSG_FSBIC_REG_HSMMC); + top_of_memory &= SMM_START_MASK; + top_of_memory <<= 16; + + /* Reserve 64 KiB for RMU firmware */ + top_of_memory -= 0x10000; + + /* Return the top of memory */ + return (void *)top_of_memory; } |