diff options
| -rw-r--r-- | src/drivers/intel/fsp/fsp_util.c | 20 | ||||
| -rw-r--r-- | src/drivers/intel/fsp/fsp_util.h | 1 | ||||
| -rw-r--r-- | src/soc/intel/fsp_baytrail/fsp/chipset_fsp_util.h | 2 | ||||
| -rw-r--r-- | src/soc/intel/fsp_baytrail/memmap.c | 15 | ||||
| -rw-r--r-- | src/soc/intel/fsp_baytrail/northcluster.c | 7 |
5 files changed, 29 insertions, 16 deletions
diff --git a/src/drivers/intel/fsp/fsp_util.c b/src/drivers/intel/fsp/fsp_util.c index 0844b37bb7..2a53c25332 100644 --- a/src/drivers/intel/fsp/fsp_util.c +++ b/src/drivers/intel/fsp/fsp_util.c @@ -195,6 +195,26 @@ void * find_saved_temp_mem(void *hob_list_ptr) return (void *) ((char *) saved_mem_hob + sizeof(EFI_HOB_GUID_TYPE)); } +#ifndef FSP_RESERVE_MEMORY_SIZE +/** @brief locates the HOB containing the location of the fsp reserved mem area + * + * @param hob_list_ptr pointer to the start of the hob list + * @return pointer to the start of the FSP reserved memory or NULL if not found. + */ +void * find_fsp_reserved_mem(void *hob_list_ptr) +{ + EFI_GUID fsp_reserved_guid = FSP_HOB_RESOURCE_OWNER_FSP_GUID; + EFI_HOB_RESOURCE_DESCRIPTOR *fsp_reserved_mem = + (EFI_HOB_RESOURCE_DESCRIPTOR *) find_hob_by_guid( + hob_list_ptr, &fsp_reserved_guid); + + if (fsp_reserved_mem == NULL) + return NULL; + + return (void *)((uintptr_t)fsp_reserved_mem->PhysicalStart); +} +#endif /* FSP_RESERVE_MEMORY_SIZE */ + #ifndef __PRE_RAM__ /* Only parse HOB data in ramstage */ void print_fsp_info(void) { diff --git a/src/drivers/intel/fsp/fsp_util.h b/src/drivers/intel/fsp/fsp_util.h index a39f5a2700..d65b842c56 100644 --- a/src/drivers/intel/fsp/fsp_util.h +++ b/src/drivers/intel/fsp/fsp_util.h @@ -38,6 +38,7 @@ void chipset_fsp_early_init(FSP_INIT_PARAMS *FspInitParams, FSP_INFO_HEADER *fsp_ptr); void ChipsetFspReturnPoint(EFI_STATUS Status, VOID *HobListPtr); void * find_saved_temp_mem(void *hob_list_ptr); +void * find_fsp_reserved_mem(void *hob_list_ptr); /* functions in hob.c */ void print_hob_mem_attributes(void *Hobptr); diff --git a/src/soc/intel/fsp_baytrail/fsp/chipset_fsp_util.h b/src/soc/intel/fsp_baytrail/fsp/chipset_fsp_util.h index 1f4fa743b4..29309bf0a5 100644 --- a/src/soc/intel/fsp_baytrail/fsp/chipset_fsp_util.h +++ b/src/soc/intel/fsp_baytrail/fsp/chipset_fsp_util.h @@ -32,8 +32,6 @@ #include <fspvpd.h> #include <azalia.h> -#define FSP_RESERVE_MEMORY_SIZE 0x200000 - #define FSP_INFO_HEADER_GUID \ { \ 0x912740BE, 0x2284, 0x4734, {0xB9, 0x71, 0x84, 0xB0, 0x27, 0x35, 0x3F, 0x0C} \ diff --git a/src/soc/intel/fsp_baytrail/memmap.c b/src/soc/intel/fsp_baytrail/memmap.c index 615916b96d..8a10ac80c7 100644 --- a/src/soc/intel/fsp_baytrail/memmap.c +++ b/src/soc/intel/fsp_baytrail/memmap.c @@ -29,18 +29,17 @@ uintptr_t smm_region_start(void) return (iosf_bunit_read(BUNIT_SMRRL) << 20); } -/* - * Calculate the top of usable (low) DRAM. - * The FSP's reserved memory sits just below the SMM region, - * allowing calculation of the top of usable memory. +/** @brief get the top of usable low memory from the FSP's HOB list + * + * The FSP's reserved memory sits just below the SMM region. The memory + * region below it is usable memory. * * The entire memory map is shown in northcluster.c + * + * @return pointer to the first byte of reserved memory */ void *cbmem_top(void) { - uintptr_t tom = smm_region_start(); - if (!tom) - tom = iosf_bunit_read(BUNIT_BMBOUND); - return (void *) tom - FSP_RESERVE_MEMORY_SIZE; + return find_fsp_reserved_mem(*(void **)CBMEM_FSP_HOB_PTR); } diff --git a/src/soc/intel/fsp_baytrail/northcluster.c b/src/soc/intel/fsp_baytrail/northcluster.c index 838e5547aa..b288388db2 100644 --- a/src/soc/intel/fsp_baytrail/northcluster.c +++ b/src/soc/intel/fsp_baytrail/northcluster.c @@ -149,8 +149,7 @@ static void mc_add_dram_resources(device_t dev) uint32_t fsp_mem_base = 0; GetHighMemorySize(&highmem_size); - GetLowMemorySize(&fsp_mem_base); - + fsp_mem_base=(uint32_t)cbmem_top(); bmbound = iosf_bunit_read(BUNIT_BMBOUND); bsmmrrl = iosf_bunit_read(BUNIT_SMRRL) << 20; @@ -162,10 +161,6 @@ static void mc_add_dram_resources(device_t dev) printk(BIOS_DEBUG, "FSP memory location: 0x%x\nFSP memory size: %dM\n", fsp_mem_base, (bsmmrrl - fsp_mem_base) >> 20); - - if ((bsmmrrl - fsp_mem_base ) != FSP_RESERVE_MEMORY_SIZE) - printk(BIOS_WARNING, "Warning: Fsp memory size does not match " - "expected memory size (%x).\n", FSP_RESERVE_MEMORY_SIZE); } printk(BIOS_INFO, "Available memory below 4GB: 0x%08x (%dM)\n", |