xref: /rk3399_ARM-atf/docs/plat/stm32mp1.rst (revision 015240d9d35c88d4f5c2845e8b8bfceb6d25dd9d) 
1STMicroelectronics STM32MP1
2===========================
3
4STM32MP1 is a microprocessor designed by STMicroelectronics
5based on a dual Arm Cortex-A7.
6It is an Armv7-A platform, using dedicated code from TF-A.
7The STM32MP1 chip also embeds a Cortex-M4.
8More information can be found on `STM32MP1 Series`_ page.
9
10
11STM32MP1 Versions
12-----------------
13The STM32MP1 series is available in 3 different lines which are pin-to-pin compatible:
14
15- STM32MP157: Dual Cortex-A7 cores, Cortex-M4 core @ 209 MHz, 3D GPU, DSI display interface and CAN FD
16- STM32MP153: Dual Cortex-A7 cores, Cortex-M4 core @ 209 MHz and CAN FD
17- STM32MP151: Single Cortex-A7 core, Cortex-M4 core @ 209 MHz
18
19Each line comes with a security option (cryptography & secure boot) and a Cortex-A frequency option:
20
21- A      Basic + Cortex-A7 @ 650 MHz
22- C      Secure Boot + HW Crypto + Cortex-A7 @ 650 MHz
23- D      Basic + Cortex-A7 @ 800 MHz
24- F      Secure Boot + HW Crypto + Cortex-A7 @ 800 MHz
25
26The `STM32MP1 part number codification`_ page gives more information about part numbers.
27
28Design
29------
30The STM32MP1 resets in the ROM code of the Cortex-A7.
31The primary boot core (core 0) executes the boot sequence while
32secondary boot core (core 1) is kept in a holding pen loop.
33The ROM code boot sequence loads the TF-A binary image from boot device
34to embedded SRAM.
35
36The TF-A image must be properly formatted with a STM32 header structure
37for ROM code is able to load this image.
38Tool stm32image can be used to prepend this header to the generated TF-A binary.
39
40At compilation step, BL2, BL32 and DTB file are linked together in a single
41binary. The stm32image tool is also generated and the header is added to TF-A
42binary. This binary file with header is named tf-a-stm32mp157c-ev1.stm32.
43It can then be copied in the first partition of the boot device.
44
45
46Memory mapping
47~~~~~~~~~~~~~~
48
49::
50
51    0x00000000 +-----------------+
52               |                 |   ROM
53    0x00020000 +-----------------+
54               |                 |
55               |       ...       |
56               |                 |
57    0x2FFC0000 +-----------------+ \
58               |                 | |
59               |       ...       | |
60               |                 | |
61    0x2FFD8000 +-----------------+ |
62               |    TF-A DTB     | | Embedded SRAM
63    0x2FFDC000 +-----------------+ |
64               |       BL2       | |
65    0x2FFEF000 +-----------------+ |
66               |       BL32      | |
67    0x30000000 +-----------------+ /
68               |                 |
69               |       ...       |
70               |                 |
71    0x40000000 +-----------------+
72               |                 |
73               |                 |   Devices
74               |                 |
75    0xC0000000 +-----------------+ \
76               |                 | |
77    0xC0100000 +-----------------+ |
78               |       BL33      | | Non-secure RAM (DDR)
79               |       ...       | |
80               |                 | |
81    0xFFFFFFFF +-----------------+ /
82
83
84Boot sequence
85~~~~~~~~~~~~~
86
87ROM code -> BL2 (compiled with BL2_AT_EL3) -> BL32 (SP_min) -> BL33 (U-Boot)
88
89or if Op-TEE is used:
90
91ROM code -> BL2 (compiled with BL2_AT_EL3) -> OP-TEE -> BL33 (U-Boot)
92
93
94Build Instructions
95------------------
96Boot media(s) supported by BL2 must be specified in the build command.
97Available storage medias are:
98- ``STM32MP_SDMMC``
99- ``STM32MP_EMMC``
100- ``STM32MP_RAW_NAND``
101- ``STM32MP_SPI_NAND``
102- ``STM32MP_SPI_NOR``
103
104To build with SP_min and support for all bootable devices:
105
106.. code:: bash
107
108    make CROSS_COMPILE=arm-linux-gnueabihf- PLAT=stm32mp1 ARCH=aarch32 ARM_ARCH_MAJOR=7 AARCH32_SP=sp_min STM32MP_SDMMC=1 STM32MP_EMMC=1 STM32MP_RAW_NAND=1 STM32MP_SPI_NAND=1
109    STM32MP_SPI_NOR=1 DTB_FILE_NAME=stm32mp157c-ev1.dtb
110    cd <u-boot_directory>
111    make stm32mp15_trusted_defconfig
112    make DEVICE_TREE=stm32mp157c-ev1 all
113
114To build TF-A with OP-TEE support for all bootable devices:
115.. code:: bash
116
117    make CROSS_COMPILE=arm-linux-gnueabihf- PLAT=stm32mp1 ARCH=aarch32 ARM_ARCH_MAJOR=7 AARCH32_SP=optee STM32MP_SDMMC=1 STM32MP_EMMC=1 STM32MP_RAW_NAND=1 STM32MP_SPI_NAND=1 STM32MP_SPI_NOR=1 DTB_FILE_NAME=stm32mp157c-ev1.dtb
118    cd <optee_directory>
119    make CROSS_COMPILE=arm-linux-gnueabihf- ARCH=arm PLATFORM=stm32mp1 CFG_EMBED_DTB_SOURCE_FILE=stm32mp157c-ev1.dts
120    cd <u-boot_directory>
121    make stm32mp15_trusted_defconfig
122    make DEVICE_TREE=stm32mp157c-ev1 all
123
124
125The following build options are supported:
126
127- ``ENABLE_STACK_PROTECTOR``: To enable the stack protection.
128
129
130Populate SD-card
131----------------
132
133The SD-card has to be formated with GPT.
134It should contain at least those partitions:
135
136- fsbl: to copy the tf-a-stm32mp157c-ev1.stm32 binary
137- ssbl: to copy the u-boot.stm32 binary
138
139Usually, two copies of fsbl are used (fsbl1 and fsbl2) instead of one partition fsbl.
140
141OP-TEE artifacts go into separate partitions as follows:
142
143- teeh: tee-header_v2.stm32
144- teed: tee-pageable_v2.stm32
145- teex: tee-pager_v2.stm32
146
147
148.. _STM32MP1 Series: https://www.st.com/en/microcontrollers-microprocessors/stm32mp1-series.html
149.. _STM32MP1 part number codification: https://wiki.st.com/stm32mpu/wiki/STM32MP15_microprocessor#Part_number_codification
150