soc/intel: Obsolete mmap_region_granularity()

Change-Id: I471598d3ce61b70e35adba3bd983f5d823ba3816
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/34696
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>

Documentation/Intel/SoC/soc.html

@@ -148,7 +148,6 @@ mv build/coreboot.rom.new build/coreboot.rom
   <li>Edit the src/soc/&lt;Vendor&gt;/&lt;Chip Family&gt;/memmap.c file
     <ol type="A">
       <li>Add the fsp/memmap.h include file</li>
-      <li>Add the mmap_region_granularity routine</li>
     </ol>
   </li>
   <li>Add the necessary .h files to define the necessary values and structures</li>

src/drivers/intel/fsp1_1/include/fsp/memmap.h

@@ -18,13 +18,6 @@
 
 #include <types.h>
 
-/*
- * mmap_region_granularity must to return a size which is a positive non-zero
- * integer multiple of the SMM size when SMM is in use.  When not using SMM,
- * this value should be set to 8 MiB.
- */
-size_t mmap_region_granularity(void);
-
 /* Fills in the arguments for the entire SMM region covered by chipset
  * protections. e.g. TSEG. */
 void smm_region(void **start, size_t *size);

src/drivers/intel/fsp2_0/include/fsp/memmap.h

@@ -18,13 +18,6 @@
 
 #include <types.h>
 
-/*
- * mmap_region_granularity must to return a size which is a positive non-zero
- * integer multiple of the SMM size when SMM is in use.  When not using SMM,
- * this value should be set to 8 MiB.
- */
-size_t mmap_region_granularity(void);
-
 /* Fills in the arguments for the entire SMM region covered by chipset
  * protections. e.g. TSEG. */
 void smm_region(void **start, size_t *size);

src/soc/intel/braswell/memmap.c

@@ -34,13 +34,6 @@ void smm_region(void **start, size_t *size)
 	*size = smm_region_size();
 }
 
-size_t mmap_region_granularity(void)
-{
-	/* Align to TSEG size when SMM is in use, and 8MiB by default */
-	return CONFIG(HAVE_SMI_HANDLER) ? smm_region_size()
-		: 8 << 20;
-}
-
 /*
  *        Subregions within SMM
  *     +-------------------------+ BUNIT_SMRRH

src/soc/intel/denverton_ns/include/soc/smm.h

@@ -24,13 +24,6 @@ struct smm_relocation_attrs {
 	uint32_t smrr_mask;
 };
 
-/*
- * mmap_region_granularity must to return a size which is a positive non-zero
- * integer multiple of the SMM size when SMM is in use.  When not using SMM,
- * this value should be set to 8 MiB.
- */
-size_t mmap_region_granularity(void);
-
 /* Fills in the arguments for the entire SMM region covered by chipset
  * protections. e.g. TSEG. */
 void smm_region(void **start, size_t *size);

src/soc/intel/skylake/memmap.c

@@ -30,17 +30,6 @@
 
 #include "chip.h"
 
-size_t mmap_region_granularity(void)
-{
-	if (CONFIG(HAVE_SMI_HANDLER))
-		/* Align to TSEG size when SMM is in use */
-		if (CONFIG_SMM_TSEG_SIZE != 0)
-			return CONFIG_SMM_TSEG_SIZE;
-
-	/* Make it 8MiB by default. */
-	return 8*MiB;
-}
-
 void smm_region(void **start, size_t *size)
 {
 	*start = (void *)sa_get_tseg_base();