Add first support for STM32MP157C-ED1 board with "Basic" boot chain 1/ Boot Rom: load SPL with STM32 image header in SYSRAM 2/ SPL: power up and initialize the DDR and load U-Boot image from SDCARD in DDR 3/ U-Boot: search and load extlinux.conf in SDCARD (DISTRO activated) Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>master
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3d2d115a30
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@ -0,0 +1,12 @@ |
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if TARGET_STM32MP1 |
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config SYS_BOARD |
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default "stm32mp1" |
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config SYS_VENDOR |
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default "st" |
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config SYS_CONFIG_NAME |
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default "stm32mp1" |
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endif |
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STM32MP1 BOARD |
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M: Patrick Delaunay <patrick.delaunay@st.com> |
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S: Maintained |
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F: board/st/stm32mp1 |
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F: include/configs/stm32mp1.h |
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F: configs/stm32mp15_basic_defconfig |
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F: arch/arm/dts/stm32mp157* |
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#
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# Copyright (C) 2018, STMicroelectronics - All Rights Reserved
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#
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# SPDX-License-Identifier: GPL-2.0+ BSD-3-Clause
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#
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ifdef CONFIG_SPL_BUILD |
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obj-y += spl.o
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else |
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obj-y += stm32mp1.o
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endif |
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obj-y += board.o
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# |
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# Copyright (C) 2018 STMicroelectronics - All Rights Reserved |
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# |
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# SPDX-License-Identifier: GPL-2.0+ BSD-3-Clause |
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# |
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U-Boot on STMicroelectronics STM32MP1 |
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====================================== |
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1. Summary |
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========== |
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This is a quick instruction for setup stm32mp1 boards. |
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|
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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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The STM32MP157 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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- 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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|
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Everything is supported in Linux but U-Boot is limited to: |
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1. UART |
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2. SDCard/MMC controller (SDMMC) |
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And the necessary drivers |
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1. I2C |
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2. STPMU1 |
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3. Clock, Reset |
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Currently the following boards are supported: |
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+ stm32mp157c-ed1 |
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3. Boot Sequences |
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================= |
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BootRom => FSBL in SYSRAM => SSBL in DDR => OS (Linux Kernel) |
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with FSBL = First Stage Bootloader |
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SSBL = Second Stage Bootloader |
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One boot configuration is supported: |
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The "Basic" boot chain (defconfig_file : stm32mp15_basic_defconfig) |
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BootRom => FSBL = U-Boot SPL => SSBL = U-Boot |
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SPL has limited security initialisation |
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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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|
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All the STM32MP1 board 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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4. Device Tree Selection |
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======================== |
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You need to select the appropriate device tree for your board, |
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the supported device trees for stm32mp157 are: |
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+ ed1: daughter board with pmic stpmu1 |
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dts: stm32mp157c-ed1 |
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5. Build Procedure |
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================== |
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1. Install required tools for U-Boot |
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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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2. Set the cross compiler: |
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# export CROSS_COMPILE=/path/to/toolchain/arm-linux-gnueabi- |
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(you can use any gcc cross compiler compatible with U-Boot) |
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3. Select the output directory (optional) |
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# export KBUILD_OUTPUT=/path/to/output |
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for example: use one output directory for each configuration |
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# export KBUILD_OUTPUT=stm32mp15_basic |
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4. Configure the U-Boot: |
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# make <defconfig_file> |
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- For basic boot mode: "stm32mp15_basic_defconfig" |
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5. Configure the device-tree and build the U-Boot image: |
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# make DEVICE_TREE=<name> all |
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example: |
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basic boot on ed1 |
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# export KBUILD_OUTPUT=stm32mp15_basic |
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# make stm32mp15_basic_defconfig |
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# make DEVICE_TREE=stm32mp157c-ed1 all |
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6. Output files |
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BootRom and ATF expect binaries with STM32 image header |
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SPL expects file with U-Boot uImage header |
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So in the output directory (selected by KBUILD_OUTPUT), |
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you can found the needed files: |
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+ FSBL = spl/u-boot-spl.stm32 |
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+ SSBL = u-boot.img |
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6. Prepare an SDCard |
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=================== |
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The minimal requirements for STMP32MP1 boot up to U-Boot are: |
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- GPT partitioning (with gdisk or with sgdisk) |
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- 2 fsbl partitions, named fsbl1 and fsbl2, size at least 256KiB |
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- one ssbl partition for U-Boot |
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Then the minimal GPT partition is: |
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----- ------- --------- ------------- |
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| Num | Name | Size | Content | |
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----- ------- -------- -------------- |
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| 1 | fsbl1 | 256 KiB | ATF or SPL | |
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| 2 | fsbl2 | 256 KiB | ATF or SPL | |
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| 3 | ssbl | enought | U-Boot | |
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| * | - | - | Boot/Rootfs| |
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----- ------- --------- ------------- |
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(*) add bootable partition for extlinux.conf |
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following Generic Distribution |
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(doc/README.distro for use) |
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according the used card reader select the block device |
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(/dev/sdx or /dev/mmcblk0) |
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in the next example I use /dev/mmcblk0 |
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for example: with gpt table with 128 entries |
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a) remove previous formatting |
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# sgdisk -o /dev/<SDCard dev> |
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b) create minimal image |
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# sgdisk --resize-table=128 -a 1 \ |
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-n 1:34:545 -c 1:fsbl1 \ |
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-n 2:546:1057 -c 2:fsbl2 \ |
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-n 3:1058:5153 -c 3:ssbl \ |
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-p /dev/<SDCard dev> |
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you can add other partition for kernel (rootfs) |
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c) copy the FSBL (2 times) and SSBL file on the correct partition. |
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in this example in partition 1 to 3 |
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for basic boot mode : <SDCard dev> = /dev/mmcblk0 |
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# dd if=u-boot-spl.stm32 of=/dev/mmcblk0p1 |
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# dd if=u-boot-spl.stm32 of=/dev/mmcblk0p2 |
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# dd if=u-boot.img of=/dev/mmcblk0p3 |
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7. Switch Setting |
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================== |
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You can select the boot mode, on the board ed1 with the switch SW1 |
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----------------------------------- |
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Boot Mode BOOT2 BOOT1 BOOT0 |
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----------------------------------- |
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Reserved 0 0 0 |
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NOR 0 0 1 |
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SD-Card 1 1 1 |
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SD-Card 1 0 1 |
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eMMC 0 1 0 |
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NAND 0 1 1 |
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Recovery 1 1 0 |
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Recovery 0 0 0 |
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To boot from SDCard, select BootPinMode = 1 1 1 and reset. |
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Recovery is a boot from serial link (UART/USB) and it is used with |
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STM32CubeProgrammer tool to load executable in RAM and to update the flash |
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devices available on the board (NOR/NAND/eMMC/SDCARD). |
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The communication between HOST and board is based on |
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- for UARTs : the uart protocol used with all MCU STM32 |
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- for USB : based on USB DFU 1.1 (without the ST extensions used on MCU STM32) |
@ -0,0 +1,75 @@ |
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/*
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* Copyright (C) 2018, STMicroelectronics - All Rights Reserved |
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* |
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* SPDX-License-Identifier: GPL-2.0+ BSD-3-Clause |
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*/ |
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#include <common.h> |
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#include <dm.h> |
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#include <asm/io.h> |
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#include <asm/arch/ddr.h> |
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#include <power/pmic.h> |
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#include <power/stpmu1.h> |
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#ifdef CONFIG_PMIC_STPMU1 |
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int board_ddr_power_init(void) |
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{ |
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struct udevice *dev; |
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int ret; |
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ret = uclass_get_device_by_driver(UCLASS_PMIC, |
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DM_GET_DRIVER(pmic_stpmu1), &dev); |
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if (ret) |
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/* No PMIC on board */ |
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return 0; |
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/* Set LDO3 to sync mode */ |
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ret = pmic_reg_read(dev, STPMU1_LDOX_CTRL_REG(STPMU1_LDO3)); |
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if (ret < 0) |
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return ret; |
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ret &= ~STPMU1_LDO3_MODE; |
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ret &= ~STPMU1_LDO12356_OUTPUT_MASK; |
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ret |= STPMU1_LDO3_DDR_SEL << STPMU1_LDO12356_OUTPUT_SHIFT; |
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ret = pmic_reg_write(dev, STPMU1_LDOX_CTRL_REG(STPMU1_LDO3), |
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ret); |
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if (ret < 0) |
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return ret; |
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/* Set BUCK2 to 1.35V */ |
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ret = pmic_clrsetbits(dev, |
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STPMU1_BUCKX_CTRL_REG(STPMU1_BUCK2), |
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STPMU1_BUCK_OUTPUT_MASK, |
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STPMU1_BUCK2_1350000V); |
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if (ret < 0) |
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return ret; |
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/* Enable BUCK2 and VREF */ |
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ret = pmic_clrsetbits(dev, |
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STPMU1_BUCKX_CTRL_REG(STPMU1_BUCK2), |
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STPMU1_BUCK_EN, STPMU1_BUCK_EN); |
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if (ret < 0) |
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return ret; |
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mdelay(STPMU1_DEFAULT_START_UP_DELAY_MS); |
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ret = pmic_clrsetbits(dev, STPMU1_VREF_CTRL_REG, |
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STPMU1_VREF_EN, STPMU1_VREF_EN); |
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if (ret < 0) |
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return ret; |
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mdelay(STPMU1_DEFAULT_START_UP_DELAY_MS); |
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/* Enable LDO3 */ |
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ret = pmic_clrsetbits(dev, |
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STPMU1_LDOX_CTRL_REG(STPMU1_LDO3), |
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STPMU1_LDO_EN, STPMU1_LDO_EN); |
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if (ret < 0) |
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return ret; |
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mdelay(STPMU1_DEFAULT_START_UP_DELAY_MS); |
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return 0; |
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} |
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#endif |
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/*
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* Copyright (C) 2018, STMicroelectronics - All Rights Reserved |
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* |
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* SPDX-License-Identifier: GPL-2.0+ BSD-3-Clause |
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*/ |
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#include <config.h> |
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#include <common.h> |
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#include <spl.h> |
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#include <dm.h> |
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#include <ram.h> |
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#include <asm/io.h> |
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#include <post.h> |
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#include <power/pmic.h> |
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#include <power/stpmu1.h> |
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#include <asm/arch/ddr.h> |
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void spl_board_init(void) |
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{ |
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/* Keep vdd on during the reset cycle */ |
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#if defined(CONFIG_PMIC_STPMU1) && defined(CONFIG_SPL_POWER_SUPPORT) |
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struct udevice *dev; |
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int ret; |
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ret = uclass_get_device_by_driver(UCLASS_PMIC, |
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DM_GET_DRIVER(pmic_stpmu1), &dev); |
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if (!ret) |
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pmic_clrsetbits(dev, |
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STPMU1_MASK_RESET_BUCK, |
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STPMU1_MASK_RESET_BUCK3, |
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STPMU1_MASK_RESET_BUCK3); |
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#endif |
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} |
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/*
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* Copyright (C) 2018, STMicroelectronics - All Rights Reserved |
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* |
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* SPDX-License-Identifier: GPL-2.0+ BSD-3-Clause |
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*/ |
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#include <config.h> |
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#include <common.h> |
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#include <asm/arch/stm32.h> |
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/*
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* Get a global data pointer |
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*/ |
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DECLARE_GLOBAL_DATA_PTR; |
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int board_late_init(void) |
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{ |
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return 0; |
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} |
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/* board dependent setup after realloc */ |
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int board_init(void) |
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{ |
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/* address of boot parameters */ |
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gd->bd->bi_boot_params = STM32_DDR_BASE + 0x100; |
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return 0; |
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} |
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CONFIG_ARM=y |
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CONFIG_ARCH_STM32MP=y |
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CONFIG_SYS_MALLOC_F_LEN=0x2000 |
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CONFIG_SPL_MMC_SUPPORT=y |
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CONFIG_SPL=y |
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CONFIG_TARGET_STM32MP1=y |
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CONFIG_DEFAULT_DEVICE_TREE="stm32mp157c-ed1" |
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CONFIG_DISTRO_DEFAULTS=y |
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CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_USE_PARTITION=y |
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CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_PARTITION=3 |
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CONFIG_SPL_I2C_SUPPORT=y |
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CONFIG_SPL_POWER_SUPPORT=y |
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CONFIG_SYS_PROMPT="STM32MP> " |
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# CONFIG_CMD_BOOTD is not set |
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# CONFIG_CMD_ELF is not set |
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# CONFIG_CMD_IMI is not set |
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# CONFIG_CMD_XIMG is not set |
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# CONFIG_CMD_EXPORTENV is not set |
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# CONFIG_CMD_IMPORTENV is not set |
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CONFIG_CMD_MEMINFO=y |
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CONFIG_CMD_GPIO=y |
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CONFIG_CMD_I2C=y |
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CONFIG_CMD_MMC=y |
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CONFIG_CMD_PMIC=y |
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CONFIG_CMD_EXT4_WRITE=y |
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# CONFIG_SPL_DOS_PARTITION is not set |
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# CONFIG_SPL_ISO_PARTITION is not set |
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CONFIG_DM_I2C=y |
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CONFIG_SYS_I2C_STM32F7=y |
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CONFIG_DM_MMC=y |
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CONFIG_STM32_SDMMC2=y |
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# CONFIG_SPL_PINCTRL_FULL is not set |
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CONFIG_DM_PMIC=y |
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CONFIG_PMIC_STPMU1=y |
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CONFIG_STM32_SERIAL=y |
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# CONFIG_EFI_LOADER is not set |
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/*
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* Copyright (C) 2018, STMicroelectronics - All Rights Reserved |
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* |
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* Configuration settings for the STM32MP15x CPU |
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* |
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* SPDX-License-Identifier: GPL-2.0+ BSD-3-Clause |
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*/ |
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#ifndef __CONFIG_H |
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#define __CONFIG_H |
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#include <linux/sizes.h> |
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#include <asm/arch/stm32.h> |
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#define CONFIG_PREBOOT |
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/*
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* Number of clock ticks in 1 sec |
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*/ |
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#define CONFIG_SYS_HZ 1000 |
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#define CONFIG_SYS_ARCH_TIMER |
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#define CONFIG_SYS_HZ_CLOCK 64000000 |
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/*
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* malloc() pool size |
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*/ |
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#define CONFIG_SYS_MALLOC_LEN SZ_32M |
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/*
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* Configuration of the external SRAM memory used by U-Boot |
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*/ |
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#define CONFIG_SYS_SDRAM_BASE STM32_DDR_BASE |
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#define CONFIG_SYS_INIT_SP_ADDR CONFIG_SYS_TEXT_BASE |
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#define CONFIG_NR_DRAM_BANKS 1 |
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/*
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* Console I/O buffer size |
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*/ |
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#define CONFIG_SYS_CBSIZE SZ_1K |
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/*
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* Needed by "loadb" |
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*/ |
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#define CONFIG_SYS_LOAD_ADDR STM32_DDR_BASE |
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/*
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* Env parameters |
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*/ |
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#define CONFIG_ENV_SIZE SZ_4K |
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/* ATAGs */ |
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#define CONFIG_CMDLINE_TAG |
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#define CONFIG_SETUP_MEMORY_TAGS |
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#define CONFIG_INITRD_TAG |
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/* SPL support */ |
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#ifdef CONFIG_SPL |
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/* BOOTROM load address */ |
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#define CONFIG_SPL_TEXT_BASE 0x2FFC2500 |
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/* SPL use DDR */ |
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#define CONFIG_SPL_BSS_START_ADDR 0xC0200000 |
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#define CONFIG_SPL_BSS_MAX_SIZE 0x00100000 |
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#define CONFIG_SYS_SPL_MALLOC_START 0xC0300000 |
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#define CONFIG_SYS_SPL_MALLOC_SIZE 0x00100000 |
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/* limit SYSRAM usage to first 128 KB */ |
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#define CONFIG_SPL_MAX_SIZE 0x00020000 |
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#define CONFIG_SPL_STACK (STM32_SYSRAM_BASE + \ |
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STM32_SYSRAM_SIZE) |
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#endif /* #ifdef CONFIG_SPL */ |
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/*MMC SD*/ |
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#define CONFIG_SYS_MMC_MAX_DEVICE 3 |
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#if !defined(CONFIG_SPL) || !defined(CONFIG_SPL_BUILD) |
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#define BOOT_TARGET_DEVICES(func) \ |
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func(MMC, mmc, 1) \
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func(MMC, mmc, 0) \
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func(MMC, mmc, 2) |
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#include <config_distro_bootcmd.h> |
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#define CONFIG_EXTRA_ENV_SETTINGS \ |
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"scriptaddr=0xC0000000\0" \
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"pxefile_addr_r=0xC0000000\0" \
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"kernel_addr_r=0xC1000000\0" \
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"fdt_addr_r=0xC4000000\0" \
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"ramdisk_addr_r=0xC4100000\0" \
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"fdt_high=0xffffffff\0" \
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"initrd_high=0xffffffff\0" \
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BOOTENV |
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#endif /* ifndef CONFIG_SPL_BUILD */ |
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#endif /* __CONFIG_H */ |
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Reference in new issue