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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 <patrick.delaunay@st.com>
Reviewed-by: Patrice Chotard <patrice.chotard@st.com>
This commit is contained in:
Patrick Delaunay
parent
8d93a9755f
commit
a21a6ba433
1 changed files with 34 additions and 18 deletions
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@ -3,8 +3,8 @@ SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause
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# Copyright (C) 2018 STMicroelectronics - All Rights Reserved
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#
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U-Boot on STMicroelectronics STM32MP1
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======================================
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U-Boot on STMicroelectronics STM32MP15x
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=======================================
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1. Summary
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==========
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@ -12,12 +12,12 @@ This is a quick instruction for setup stm32mp1 boards.
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2. Supported devices
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====================
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U-Boot supports one STMP32MP1 SoCs: STM32MP157
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U-Boot supports STMP32MP15x SoCs: STM32MP157, STM32MP153 and STM32MP151
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The STM32MP157 is a Cortex-A MPU aimed at various applications.
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The STM32MP15x is a Cortex-A MPU aimed at various applications.
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It features:
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- Dual core Cortex-A7 application core
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- 2D/3D image composition with GPU
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- Dual core Cortex-A7 application core (Single on STM32MP151)
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- 2D/3D image composition with GPU (only on STM32MP157)
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- Standard memories interface support
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- Standard connectivity, widely inherited from the STM32 MCU family
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- Comprehensive security support
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@ -37,11 +37,11 @@ And the necessary drivers
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4. Fuse
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Currently the following boards are supported:
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+ stm32mp157c-ev1
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+ stm32mp157c-ed1
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+ stm32mp157a-dk1
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+ stm32mp157c-dk2
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+ stm32mp157a-avenger96
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+ stm32mp157a-avenger96.dts
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+ stm32mp157a-dk1.dts
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+ stm32mp157c-dk2.dts
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+ stm32mp157c-ed1.dts
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+ stm32mp157c-ev1.dts
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3. Boot Sequences
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=================
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@ -74,7 +74,7 @@ with FSBL = First Stage Bootloader
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U-Boot is running in secure mode and provide a secure monitor to the kernel
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with only PSCI support (Power State Coordination Interface defined by ARM).
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All the STM32MP1 boards supported by U-Boot use the same generic board
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All the STM32MP15x boards supported by U-Boot use the same generic board
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stm32mp1 which support all the bootable devices.
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Each board is configurated only with the associated device tree.
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@ -108,7 +108,7 @@ the supported device trees for stm32mp157 are:
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+ install package needed in U-Boot makefile
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(libssl-dev, swig, libpython-dev...)
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+ install ARMv7 toolchain for 32bit Cortex-A (from Linaro,
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from SDK for STM32MP1, or any crosstoolchains from your distribution)
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from SDK for STM32MP15x, or any crosstoolchains from your distribution)
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2. Set the cross compiler:
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@ -323,8 +323,7 @@ c) copy U-Boot in first GPT partition of eMMC
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# ext4load mmc 0:4 0xC0000000 u-boot.img
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# mmc dev 1
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# part start mmc 1 1 partstart
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# part size mmc 1 1 partsize
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# mmc write ${fileaddr} ${partstart} ${partsize}
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# mmc write ${fileaddr} ${partstart} ${filesize}
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To boot from eMMC, select BootPinMode = 0 1 0 and reset.
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@ -334,14 +333,27 @@ To boot from eMMC, select BootPinMode = 0 1 0 and reset.
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Please read doc/README.enetaddr for the implementation guidelines for mac id
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usage. Basically, environment has precedence over board specific storage.
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Mac id storage and retrieval in stm32mp otp :
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For STMicroelectonics board, it is retrieved in STM32MP15x otp :
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- OTP_57[31:0] = MAC_ADDR[31:0]
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- OTP_58[15:0] = MAC_ADDR[47:32]
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To program a MAC address on virgin OTP words above, you can use the fuse command
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on bank 0 to access to internal OTP:
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example to set mac address "12:34:56:78:9a:bc"
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Prerequisite: check if a MAC address isn't yet programmed in OTP
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1- check OTP: their value must be equal to 0
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STM32MP> fuse sense 0 57 2
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Sensing bank 0:
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Word 0x00000039: 00000000 00000000
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2- check environment variable
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STM32MP> env print ethaddr
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## Error: "ethaddr" not defined
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Example to set mac address "12:34:56:78:9a:bc"
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1- Write OTP
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STM32MP> fuse prog -y 0 57 0x78563412 0x0000bc9a
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@ -355,9 +367,13 @@ on bank 0 to access to internal OTP:
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### Setting environment from OTP MAC address = "12:34:56:78:9a:bc"
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4 check env update
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STM32MP> print ethaddr
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STM32MP> env print ethaddr
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ethaddr=12:34:56:78:9a:bc
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warning:: This MAC address provisioning can't be executed twice on the same
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board as the OTP are protected. It is already done for the board
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provided by STMicroelectronics.
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10. Coprocessor firmware
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========================
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