soc/intel/common/sa: Remove EBDA dependency

Saving cbmem_top across stages is not needed anymore so EBDA should
not be used. The guard to cbmem_top_chipset implementation was
inappropriate.

Change-Id: Ibbb3534b88de4f7b6fc39675a77461265605e56e
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/36614
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Michael Niewöhner

4 files changed, 30 insertions, 27 deletions

diff --git a/src/soc/intel/common/block/systemagent/Kconfig b/src/soc/intel/common/block/systemagent/Kconfig
index 1222573201..4c50d50c64 100644
--- a/src/soc/intel/common/block/systemagent/Kconfig
+++ b/src/soc/intel/common/block/systemagent/Kconfig
@@ -3,6 +3,12 @@ config SOC_INTEL_COMMON_BLOCK_SA
 	help
 	  Intel Processor common System Agent support
 
+config SOC_INTEL_COMMON_BLOCK_SA_FSP_TOLUM
+	bool
+	help
+	  Select this if you want cbmem_top_chipset use the TOLUM returned
+	  by the FSP HOB.
+
 config MMCONF_BASE_ADDRESS
 	hex
 	default 0xe0000000
diff --git a/src/soc/intel/common/block/systemagent/Makefile.inc b/src/soc/intel/common/block/systemagent/Makefile.inc
index 7e49ec7291..1cced4a0d1 100644
--- a/src/soc/intel/common/block/systemagent/Makefile.inc
+++ b/src/soc/intel/common/block/systemagent/Makefile.inc
@@ -6,3 +6,4 @@ ramstage-$(CONFIG_SOC_INTEL_COMMON_BLOCK_SA) += systemagent.c
 romstage-$(CONFIG_SOC_INTEL_COMMON_BLOCK_SA) += memmap.c
 ramstage-$(CONFIG_SOC_INTEL_COMMON_BLOCK_SA) += memmap.c
 postcar-$(CONFIG_SOC_INTEL_COMMON_BLOCK_SA) += memmap.c
+romstage-$(CONFIG_SOC_INTEL_COMMON_BLOCK_SA_FSP_TOLUM) += cbmem.c
diff --git a/src/soc/intel/common/block/systemagent/cbmem.c b/src/soc/intel/common/block/systemagent/cbmem.c
new file mode 100644
index 0000000000..7e743dfcdd
--- /dev/null
+++ b/src/soc/intel/common/block/systemagent/cbmem.c
@@ -0,0 +1,23 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#include <cbmem.h>
+#include <fsp/util.h>
+
+void *cbmem_top_chipset(void)
+{
+	struct range_entry tolum;
+
+	fsp_find_bootloader_tolum(&tolum);
+	return (void *)(uintptr_t)range_entry_end(&tolum);
+}
diff --git a/src/soc/intel/common/block/systemagent/memmap.c b/src/soc/intel/common/block/systemagent/memmap.c
index 809c13a1ff..2b0fdc4e14 100644
--- a/src/soc/intel/common/block/systemagent/memmap.c
+++ b/src/soc/intel/common/block/systemagent/memmap.c
@@ -19,8 +19,6 @@
 #include <console/console.h>
 #include <cpu/x86/mtrr.h>
 #include <cpu/x86/smm.h>
-#include <fsp/util.h>
-#include <intelblocks/ebda.h>
 #include <intelblocks/systemagent.h>
 #include <stdlib.h>
 
@@ -70,31 +68,6 @@ void smm_region(uintptr_t *start, size_t *size)
 	*size = sa_get_tseg_size();
 }
 
-#if CONFIG(SOC_INTEL_COMMON_BLOCK_EBDA)
-void fill_memmap_ebda(struct ebda_config *cfg)
-{
-	struct range_entry tolum;
-
-	fsp_find_bootloader_tolum(&tolum);
-	cfg->cbmem_top = range_entry_end(&tolum);
-}
-
-void cbmem_top_init(void)
-{
-	/* Initialize EBDA area */
-	initialize_ebda_area();
-}
-
-void *cbmem_top_chipset(void)
-{
-	struct ebda_config ebda_cfg;
-
-	retrieve_ebda_object(&ebda_cfg);
-
-	return (void *)(uintptr_t)ebda_cfg.cbmem_top;
-}
-#endif
-
 void fill_postcar_frame(struct postcar_frame *pcf)
 {
 	uintptr_t top_of_ram;