feat(stm32mp1): introduce new flag for STM32MP13

STM32MP13 is a variant of STM32MP1, with a single Cortex-A7, and no
Cortex-M4.
There is only one DDR port.
SP_min is not supported, only OP-TEE can be used as monitor.
STM32MP13 uses the header v2.0 format for stm32image generation
for BL2.

Change-Id: Ie5b0e3230c5e064fe96f3561fc5b3208914dea53
Signed-off-by: Yann Gautier <yann.gautier@st.com>

docs/plat/stm32mp1.rst

@@ -2,15 +2,34 @@ STMicroelectronics STM32MP1
 ===========================
 
 STM32MP1 is a microprocessor designed by STMicroelectronics
-based on a dual Arm Cortex-A7.
+based on Arm Cortex-A7.
 It is an Armv7-A platform, using dedicated code from TF-A.
-The STM32MP1 chip also embeds a Cortex-M4.
 More information can be found on `STM32MP1 Series`_ page.
 
 
 STM32MP1 Versions
 -----------------
-The STM32MP1 series is available in 3 different lines which are pin-to-pin compatible:
+
+There are 2 variants for STM32MP1: STM32MP13 and STM32MP15
+
+STM32MP13 Versions
+~~~~~~~~~~~~~~~~~~
+The STM32MP13 series is available in 3 different lines which are pin-to-pin compatible:
+
+- STM32MP131: Single Cortex-A7 core
+- STM32MP133: STM32MP131 + 2*CAN, ETH2(GMAC), ADC1
+- STM32MP135: STM32MP133 + DCMIPP, LTDC
+
+Each line comes with a security option (cryptography & secure boot) and a Cortex-A frequency option:
+
+- A      Cortex-A7 @ 650 MHz
+- C      Secure Boot + HW Crypto + Cortex-A7 @ 650 MHz
+- D      Cortex-A7 @ 900 MHz
+- F      Secure Boot + HW Crypto + Cortex-A7 @ 900 MHz
+
+STM32MP15 Versions
+~~~~~~~~~~~~~~~~~~
+The STM32MP15 series is available in 3 different lines which are pin-to-pin compatible:
 
 - STM32MP157: Dual Cortex-A7 cores, Cortex-M4 core @ 209 MHz, 3D GPU, DSI display interface and CAN FD
 - STM32MP153: Dual Cortex-A7 cores, Cortex-M4 core @ 209 MHz and CAN FD
@@ -131,6 +150,10 @@ Other configuration flags:
   | Default: 115200
 - | ``STM32_TF_VERSION``: to manage BL2 monotonic counter.
   | Default: 0
+- | ``STM32MP13``: to select STM32MP13 variant configuration.
+  | Default: 0
+- | ``STM32MP15``: to select STM32MP15 variant configuration.
+  | Default: 1
 
 
 Boot with FIP

plat/st/stm32mp1/platform.mk

@@ -24,6 +24,22 @@ STM32_TF_VERSION	?=	0
 # Enable dynamic memory mapping
 PLAT_XLAT_TABLES_DYNAMIC :=	1
 
+ifeq ($(STM32MP13),1)
+STM32MP13		:=	1
+STM32MP15		:=	0
+
+# DDR controller with single AXI port and 16-bit interface
+STM32MP_DDR_DUAL_AXI_PORT:=	0
+STM32MP_DDR_32BIT_INTERFACE:=	0
+
+# STM32 image header version v2.0
+STM32_HEADER_VERSION_MAJOR:=	2
+STM32_HEADER_VERSION_MINOR:=	0
+else
+#STM32MP15
+STM32MP13		:=	0
+STM32MP15		:=	1
+
 # DDR controller with dual AXI port and 32-bit interface
 STM32MP_DDR_DUAL_AXI_PORT:=	1
 STM32MP_DDR_32BIT_INTERFACE:=	1
@@ -31,6 +47,7 @@ STM32MP_DDR_32BIT_INTERFACE:=	1
 # STM32 image header version v1.0
 STM32_HEADER_VERSION_MAJOR:=	1
 STM32_HEADER_VERSION_MINOR:=	0
+endif
 
 # STM32 image header binary type for BL2
 STM32_HEADER_BL2_BINARY_TYPE:=	0x10
@@ -174,6 +191,8 @@ $(eval $(call assert_booleans,\
 		STM32MP_UART_PROGRAMMER \
 		STM32MP_USB_PROGRAMMER \
 		STM32MP_USE_STM32IMAGE \
+		STM32MP13 \
+		STM32MP15 \
 )))
 
 $(eval $(call assert_numerics,\
@@ -203,6 +222,8 @@ $(eval $(call add_defines,\
 		STM32MP_UART_PROGRAMMER \
 		STM32MP_USB_PROGRAMMER \
 		STM32MP_USE_STM32IMAGE \
+		STM32MP13 \
+		STM32MP15 \
 )))
 
 # Include paths and source files

plat/st/stm32mp1/sp_min/sp_min-stm32mp1.mk

@@ -4,6 +4,10 @@
 # SPDX-License-Identifier: BSD-3-Clause
 #
 
+ifeq ($(STM32MP13),1)
+$(error "SP_min is not supported on STM32MP13 platform")
+endif
+
 SP_MIN_WITH_SECURE_FIQ	:=	1
 
 ifneq ($(STM32MP_USE_STM32IMAGE),1)