Commit a21a6ba4 authored by Patrick Delaunay's avatar Patrick Delaunay
Browse files

board: stm32mp1: update readme



Update readme:
- list the supported SOC and change family to STM32MP15x
- add warning on OTP write and prerequisite:
  check if MAC address is not yet provisioned.
- Use filesize for mmc write command (avoid to write all partition
  with ${partsize}). ${filesize} and ${partsize} are set by previous
  load command.
Signed-off-by: Patrick Delaunay's avatarPatrick Delaunay <patrick.delaunay@st.com>
Reviewed-by: Patrice Chotard's avatarPatrice Chotard <patrice.chotard@st.com>
parent 8d93a975
......@@ -3,8 +3,8 @@ SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause
# Copyright (C) 2018 STMicroelectronics - All Rights Reserved
#
U-Boot on STMicroelectronics STM32MP1
======================================
U-Boot on STMicroelectronics STM32MP15x
=======================================
1. Summary
==========
......@@ -12,12 +12,12 @@ This is a quick instruction for setup stm32mp1 boards.
2. Supported devices
====================
U-Boot supports one STMP32MP1 SoCs: STM32MP157
U-Boot supports STMP32MP15x SoCs: STM32MP157, STM32MP153 and STM32MP151
The STM32MP157 is a Cortex-A MPU aimed at various applications.
The STM32MP15x is a Cortex-A MPU aimed at various applications.
It features:
- Dual core Cortex-A7 application core
- 2D/3D image composition with GPU
- Dual core Cortex-A7 application core (Single on STM32MP151)
- 2D/3D image composition with GPU (only on STM32MP157)
- Standard memories interface support
- Standard connectivity, widely inherited from the STM32 MCU family
- Comprehensive security support
......@@ -37,11 +37,11 @@ And the necessary drivers
4. Fuse
Currently the following boards are supported:
+ stm32mp157c-ev1
+ stm32mp157c-ed1
+ stm32mp157a-dk1
+ stm32mp157c-dk2
+ stm32mp157a-avenger96
+ stm32mp157a-avenger96.dts
+ stm32mp157a-dk1.dts
+ stm32mp157c-dk2.dts
+ stm32mp157c-ed1.dts
+ stm32mp157c-ev1.dts
3. Boot Sequences
=================
......@@ -74,7 +74,7 @@ with FSBL = First Stage Bootloader
U-Boot is running in secure mode and provide a secure monitor to the kernel
with only PSCI support (Power State Coordination Interface defined by ARM).
All the STM32MP1 boards supported by U-Boot use the same generic board
All the STM32MP15x boards supported by U-Boot use the same generic board
stm32mp1 which support all the bootable devices.
Each board is configurated only with the associated device tree.
......@@ -108,7 +108,7 @@ the supported device trees for stm32mp157 are:
+ install package needed in U-Boot makefile
(libssl-dev, swig, libpython-dev...)
+ install ARMv7 toolchain for 32bit Cortex-A (from Linaro,
from SDK for STM32MP1, or any crosstoolchains from your distribution)
from SDK for STM32MP15x, or any crosstoolchains from your distribution)
2. Set the cross compiler:
......@@ -323,8 +323,7 @@ c) copy U-Boot in first GPT partition of eMMC
# ext4load mmc 0:4 0xC0000000 u-boot.img
# mmc dev 1
# part start mmc 1 1 partstart
# part size mmc 1 1 partsize
# mmc write ${fileaddr} ${partstart} ${partsize}
# mmc write ${fileaddr} ${partstart} ${filesize}
To boot from eMMC, select BootPinMode = 0 1 0 and reset.
......@@ -334,14 +333,27 @@ To boot from eMMC, select BootPinMode = 0 1 0 and reset.
Please read doc/README.enetaddr for the implementation guidelines for mac id
usage. Basically, environment has precedence over board specific storage.
Mac id storage and retrieval in stm32mp otp :
For STMicroelectonics board, it is retrieved in STM32MP15x otp :
- OTP_57[31:0] = MAC_ADDR[31:0]
- OTP_58[15:0] = MAC_ADDR[47:32]
To program a MAC address on virgin OTP words above, you can use the fuse command
on bank 0 to access to internal OTP:
example to set mac address "12:34:56:78:9a:bc"
Prerequisite: check if a MAC address isn't yet programmed in OTP
1- check OTP: their value must be equal to 0
STM32MP> fuse sense 0 57 2
Sensing bank 0:
Word 0x00000039: 00000000 00000000
2- check environment variable
STM32MP> env print ethaddr
## Error: "ethaddr" not defined
Example to set mac address "12:34:56:78:9a:bc"
1- Write OTP
STM32MP> fuse prog -y 0 57 0x78563412 0x0000bc9a
......@@ -355,9 +367,13 @@ on bank 0 to access to internal OTP:
### Setting environment from OTP MAC address = "12:34:56:78:9a:bc"
4 check env update
STM32MP> print ethaddr
STM32MP> env print ethaddr
ethaddr=12:34:56:78:9a:bc
warning:: This MAC address provisioning can't be executed twice on the same
board as the OTP are protected. It is already done for the board
provided by STMicroelectronics.
10. Coprocessor firmware
========================
......
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