soc/amd/picasso/Makefile: Use apcb_tool to generate APCBs from SPDs

BUG=b:147042464
TEST=Boot trembyle to OS

Signed-off-by: Rob Barnes <robbarnes@google.com>
Signed-off-by: Raul E Rangel <rrangel@chromium.org>
Change-Id: Ife48d5268230f70c6a6f4a56c1f0d05b6c924891
Reviewed-on: https://review.coreboot.org/c/coreboot/+/41381
Reviewed-by: Furquan Shaikh <furquan@google.com>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

3 files changed, 97 insertions, 50 deletions

diff --git a/Documentation/soc/amd/family17h.md b/Documentation/soc/amd/family17h.md
index b917c94526..23088cd12b 100755
--- a/Documentation/soc/amd/family17h.md
+++ b/Documentation/soc/amd/family17h.md
@@ -237,6 +237,51 @@ Picasso's FSP is compatible with rev. 2.0 of the External Architecture
 Specification.  Deviations, e.g., no FSP-T support, shall be published
 in an Integration Guide.
 
+## APCB setup
+
+APCBs are used to provide the PSP with SPD information and optionally a set of
+GPIOs to use for selecting which SPD to load.
+
+### Prebuilt
+The picasso `Makefile` expects APCBs to be located in
+`3rdparty/blobs/mainboard/$(MAINBOARDDIR)`. If you have a pre-built binary just
+add the following to your mainboard's Makefile.
+
+```
+# i.e., 3rdparty/blobs/mainboard/amd/mandolin/APCB_mandolin.bin
+APCB_SOURCES = mandolin
+```
+
+### Generating APCBs
+If you have a template APCB file, the `apcb_edit` tool can be used to inject the
+SPD and GPIOs used to select the correct slot.  Entries should match this
+pattern `{NAME}_x{1,2}`. There should be a matching SPD hex file in
+`SPD_SOURCES_DIR` matching the pattern `{NAME}.spd.hex`.
+The `_x{1,2}` suffix denotes single or dual channel. Up to 16 slots can be used.
+If a slot is empty, the special empty keyword can be used. This will generate
+an APCB with an empty SPD.
+
+```
+APCB_SOURCES =  hynix-HMA851S6CJR6N-VK_x1   # 0b0000
+APCB_SOURCES += hynix-HMAA1GS6CMR6N-VK_x2   # 0b0001
+APCB_SOURCES += empty                       # 0b0010
+APCB_SOURCES += samsung-K4A8G165WC-BCWE_x1  # 0b0011
+```
+
+#### APCB Board ID GPIO configuration.
+The GPIOs determine which memory SPD will be used during boot.
+```
+# APCB_BOARD_ID_GPIO[0-3] = GPIO_NUMBER GPIO_IO_MUX GPIO_BANK_CTL
+# GPIO_NUMBER: FCH GPIO number
+# GPIO_IO_MUX: Value write to IOMUX to configure this GPIO
+# GPIO_BANK_CTL: Value write to GPIOBankCtl[23:16] to configure this GPIO
+
+APCB_BOARD_ID_GPIO0 = 121 1 0
+APCB_BOARD_ID_GPIO1 = 120 1 0
+APCB_BOARD_ID_GPIO2 = 131 3 0
+APCB_BOARD_ID_GPIO3 = 116 1 0
+```
+
 ## Footnotes
 
 1. *AMD Platform Security Processor BIOS Architecture Design Guide
diff --git a/src/soc/amd/picasso/Kconfig b/src/soc/amd/picasso/Kconfig
index 7173b6c06f..48e1cc2e6b 100644
--- a/src/soc/amd/picasso/Kconfig
+++ b/src/soc/amd/picasso/Kconfig
@@ -299,36 +299,6 @@ config AMD_PUBKEY_FILE
 	string
 	default "3rdparty/amd_blobs/picasso/PSP/AmdPubKeyRV.bin"
 
-config PSP_APCB_FILE
-	string
-	help
-	  The name of the AGESA Parameter Customization Block.  This image is
-	  instance ID 0 in the PSP's BIOS Directory Table.
-
-config PSP_APCB1_FILE
-	string
-	help
-	  If specified, this image is instance ID 1 in the PSP's BIOS
-	  Directory Table.
-
-config PSP_APCB2_FILE
-	string
-	help
-	  If specified, this image is instance ID 2 in the PSP's BIOS
-	  Directory Table.
-
-config PSP_APCB3_FILE
-	string
-	help
-	  If specified, this image is instance ID 3 in the PSP's BIOS
-	  Directory Table.
-
-config PSP_APCB4_FILE
-	string
-	help
-	  If specified, this image is instance ID 4 in the PSP's BIOS
-	  Directory Table.
-
 config PSP_APOB_DESTINATION
 	hex
 	default 0x9f00000
diff --git a/src/soc/amd/picasso/Makefile.inc b/src/soc/amd/picasso/Makefile.inc
index a82a227c15..6fc834e56b 100644
--- a/src/soc/amd/picasso/Makefile.inc
+++ b/src/soc/amd/picasso/Makefile.inc
@@ -78,6 +78,8 @@ CPPFLAGS_common += -I$(src)/soc/amd/picasso/include
 CPPFLAGS_common += -I$(src)/soc/amd/picasso/acpi
 CPPFLAGS_common += -I$(src)/vendorcode/amd/fsp/picasso
 
+MAINBOARD_BLOBS_DIR:=$(top)/3rdparty/blobs/mainboard/$(MAINBOARDDIR)
+
 # ROMSIG Normally At ROMBASE + 0x20000
 # Overridden by CONFIG_AMD_FWM_POSITION_INDEX
 # +-----------+---------------+----------------+------------+
@@ -175,11 +177,7 @@ endif
 #
 
 # type = 0x60
-PSP_APCB0_FILE=$(call strip_quotes, $(CONFIG_PSP_APCB_FILE))
-PSP_APCB1_FILE=$(call strip_quotes, $(CONFIG_PSP_APCB1_FILE))
-PSP_APCB2_FILE=$(call strip_quotes, $(CONFIG_PSP_APCB2_FILE))
-PSP_APCB3_FILE=$(call strip_quotes, $(CONFIG_PSP_APCB3_FILE))
-PSP_APCB4_FILE=$(call strip_quotes, $(CONFIG_PSP_APCB4_FILE))
+PSP_APCB_FILES=$(foreach f, $(APCB_SOURCES), $(obj)/APCB_$(f).bin)
 
 # type = 0x61
 PSP_APOB_BASE=$(CONFIG_PSP_APOB_DESTINATION)
@@ -257,11 +255,10 @@ OPT_ABL6_FILE=$(call add_opt_prefix,  $(PSP_ABL6_FILE), --abl-image)
 OPT_ABL7_FILE=$(call add_opt_prefix,  $(PSP_ABL7_FILE), --abl-image)
 OPT_WHITELIST_FILE=$(call add_opt_prefix, $(PSP_WHITELIST_FILE), --whitelist)
 
-OPT_PSP_APCB0_FILE=$(call add_opt_prefix, $(PSP_APCB0_FILE), --instance 0 --apcb)
-OPT_PSP_APCB1_FILE=$(call add_opt_prefix, $(PSP_APCB1_FILE), --instance 1 --apcb)
-OPT_PSP_APCB2_FILE=$(call add_opt_prefix, $(PSP_APCB2_FILE), --instance 2 --apcb)
-OPT_PSP_APCB3_FILE=$(call add_opt_prefix, $(PSP_APCB3_FILE), --instance 3 --apcb)
-OPT_PSP_APCB4_FILE=$(call add_opt_prefix, $(PSP_APCB4_FILE), --instance 4 --apcb)
+OPT_PSP_APCB_FILES=$(foreach i, $(shell seq $(words $(PSP_APCB_FILES))), \
+	$(call add_opt_prefix, $(word $(i), $(PSP_APCB_FILES)), \
+	--instance $(shell printf "%x" $$(($(i)-1))) --apcb ))
+
 OPT_APOB_ADDR=$(call add_opt_prefix, $(PSP_APOB_BASE), --apob-base)
 OPT_PSP_BIOSBIN_FILE=$(call add_opt_prefix, $(PSP_BIOSBIN_FILE), --bios-bin)
 OPT_PSP_BIOSBIN_DEST=$(call add_opt_prefix, $(PSP_BIOSBIN_DEST), --bios-bin-dest)
@@ -281,15 +278,53 @@ OPT_PSP_UCODE_FILE2=$(call add_opt_prefix, $(PSP_UCODE_FILE2), --instance 1 --uc
 OPT_PSP_UCODE_FILE3=$(call add_opt_prefix, $(PSP_UCODE_FILE3), --instance 2 --ucode)
 OPT_MP2CFG_FILE=$(call add_opt_prefix, $(PSP_MP2CFG_FILE), --mp2-config)
 
+# Copy prebuild APCBs if they exist
+$(obj)/APCB_%.bin: $(MAINBOARD_BLOBS_DIR)/APCB_%.bin
+	cp $< $@
+
+# APCB binary with magic numbers to be replaced by apcb_edit tool
+APCB_MAGIC_BLOB:=$(MAINBOARD_BLOBS_DIR)/APCB_magic.bin
+
+$(obj)/APCB_empty.bin: $(APCB_MAGIC_BLOB) $(APCB_EDIT_TOOL)
+	$(APCB_EDIT_TOOL) \
+	$(APCB_MAGIC_BLOB) \
+	$@ \
+	--board_id_gpio0 $(APCB_BOARD_ID_GPIO0) \
+	--board_id_gpio1 $(APCB_BOARD_ID_GPIO1) \
+	--board_id_gpio2 $(APCB_BOARD_ID_GPIO2) \
+	--board_id_gpio3 $(APCB_BOARD_ID_GPIO3)
+
+$(obj)/APCB_%_x1.bin:	$$(SPD_SOURCES_DIR)/%.spd.hex \
+			$(APCB_EDIT_TOOL) \
+			$(APCB_MAGIC_BLOB)
+	$(APCB_EDIT_TOOL) \
+	$(APCB_MAGIC_BLOB) \
+	$@ \
+	--hex \
+	--spd_0_0 $< \
+	--board_id_gpio0 $(APCB_BOARD_ID_GPIO0) \
+	--board_id_gpio1 $(APCB_BOARD_ID_GPIO1) \
+	--board_id_gpio2 $(APCB_BOARD_ID_GPIO2) \
+	--board_id_gpio3 $(APCB_BOARD_ID_GPIO3)
+
+$(obj)/APCB_%_x2.bin:	$$(SPD_SOURCES_DIR)/%.spd.hex \
+			$(APCB_EDIT_TOOL) \
+			$(APCB_MAGIC_BLOB)
+	$(APCB_EDIT_TOOL) \
+	$(APCB_MAGIC_BLOB) \
+	$@ \
+	--hex \
+	--spd_0_0 $< \
+	--spd_1_0 $< \
+	--board_id_gpio0 $(APCB_BOARD_ID_GPIO0) \
+	--board_id_gpio1 $(APCB_BOARD_ID_GPIO1) \
+	--board_id_gpio2 $(APCB_BOARD_ID_GPIO2) \
+	--board_id_gpio3 $(APCB_BOARD_ID_GPIO3)
+
 $(obj)/amdfw.rom:	$(call strip_quotes, $(CONFIG_AMD_PUBKEY_FILE)) \
 			$(call strip_quotes, $(PSPBTLDR_FILE)) \
 			$(call strip_quotes, $(PSPSCUREOS_FILE)) \
 			$(call strip_quotes, $(PSP_SEC_DBG_KEY_FILE)) \
-			$(call strip_quotes, $(PSP_APCB0_FILE)) \
-			$(call strip_quotes, $(PSP_APCB1_FILE)) \
-			$(call strip_quotes, $(PSP_APCB2_FILE)) \
-			$(call strip_quotes, $(PSP_APCB3_FILE)) \
-			$(call strip_quotes, $(PSP_APCB4_FILE)) \
 			$(call strip_quotes, $(PSP_BIOSBIN_FILE)) \
 			$(call strip_quotes, $(PSP_PMUI_FILE1)) \
 			$(call strip_quotes, $(PSP_PMUI_FILE2)) \
@@ -322,6 +357,7 @@ $(obj)/amdfw.rom:	$(call strip_quotes, $(CONFIG_AMD_PUBKEY_FILE)) \
 			$(call_strip_quotes, $(PSP_S0I3_FILE)) \
 			$(call_strip_quotes, $(PSP_IKEK_FILE)) \
 			$(call_strip_quotes, $(PSP_SEC_DEBUG_FILE)) \
+			$$(PSP_APCB_FILES) \
 			$(AMDFWTOOL)
 	rm -f $@
 	@printf "    AMDFWTOOL  $(subst $(obj)/,,$(@))\n"
@@ -334,11 +370,7 @@ $(obj)/amdfw.rom:	$(call strip_quotes, $(CONFIG_AMD_PUBKEY_FILE)) \
 		$(OPT_SMUFW2_SUB2_FILE) \
 		$(OPT_SMUFW1_SUB1_FILE) \
 		$(OPT_SMUFW2_SUB1_FILE) \
-		$(OPT_PSP_APCB0_FILE) \
-		$(OPT_PSP_APCB1_FILE) \
-		$(OPT_PSP_APCB2_FILE) \
-		$(OPT_PSP_APCB3_FILE) \
-		$(OPT_PSP_APCB4_FILE) \
+		$(OPT_PSP_APCB_FILES) \
 		$(OPT_APOB_ADDR) \
 		$(OPT_APOBNV_ADDR) \
 		$(OPT_APOBNV_SIZE) \