Re: [PATCH v2 7/7] doc: board: Add Microchip MPFS Icicle Kit doc

On Thu, Oct 22, 2020 at 1:22 PM Padmarao Begari padmarao.begari@microchip.com wrote:

This doc describes the procedure to build, flash and boot Linux using U-boot on Microchip MPFS Icicle Kit.

Signed-off-by: Padmarao Begari padmarao.begari@microchip.com

doc/board/index.rst | 1 + doc/board/microchip/index.rst | 9 + doc/board/microchip/mpfs_icicle.rst | 605 ++++++++++++++++++++++++++++ 3 files changed, 615 insertions(+) create mode 100644 doc/board/microchip/index.rst create mode 100644 doc/board/microchip/mpfs_icicle.rst

diff --git a/doc/board/index.rst b/doc/board/index.rst index 63935abcd7..e50a78d752 100644 --- a/doc/board/index.rst +++ b/doc/board/index.rst @@ -15,6 +15,7 @@ Board-specific doc freescale/index google/index intel/index

• microchip/index renesas/index rockchip/index sifive/index

diff --git a/doc/board/microchip/index.rst b/doc/board/microchip/index.rst new file mode 100644 index 0000000000..b09e6788af --- /dev/null +++ b/doc/board/microchip/index.rst @@ -0,0 +1,9 @@ +.. SPDX-License-Identifier: GPL-2.0+

+Microchip +======

+.. toctree::

• :maxdepth: 2
• mpfs_icicle

diff --git a/doc/board/microchip/mpfs_icicle.rst b/doc/board/microchip/mpfs_icicle.rst new file mode 100644 index 0000000000..a4876b02f7 --- /dev/null +++ b/doc/board/microchip/mpfs_icicle.rst @@ -0,0 +1,605 @@ +.. SPDX-License-Identifier: GPL-2.0+

+Microchip PolarFire SoC Icicle Kit +==================================

+RISC-V PolarFire SoC +--------------------- +The PolarFire SoC is the 4+1 64-bit RISC-V SoC from Microchip.

+The Icicle Kit development platform is based on PolarFire SoC and capable +of running Linux.

+Mainline support +---------------- +The support for following drivers are already enabled:

+1. NS16550 UART Driver. +2. Microchip Clock Driver. +3. Cadence MACB ethernet driver for networking support. +4. Cadence MMC Driver for eMMC/SD support.

+Booting from eMMC using HSS +---------------------------

+Building +--------

+1. Add the RISC-V toolchain to your PATH. +2. Setup ARCH & cross compilation environment variable:

+.. code-block:: none

• export CROSS_COMPILE=<riscv64 toolchain prefix>

+3. make microchip_mpfs_icicle_defconfig +4. make

+Flashing +--------

+The current U-Boot port is supported in S-mode only and loaded from DRAM.

+A prior stage M-mode firmware/bootloader (e.g HSS with OpenSBI) is required to +boot the u-boot.bin in S-mode.

+Currently, the u-boot.bin is used as a payload of the HSS firmware.

+You will be creating a payload from `u-boot-dtb.bin`. +Copy this file to the toplevel HSS (Hart Software Services) directory.

The HSS firmware has a very old OpenSBI linked to it as a library. The OpenSBI is a moving target and a lot of features/fixes keep adding to OpenSBI.

To tackle this, latest HSS has a compile time option for custom boot flow . The HSS custom boot-flow allows us to: 1. Use OpenSBI generic platform fw_payload.bin (with u-boot.bin embedded) as HSS payload 2. Use U-Boot SPL (in-future) as HSS payload

I am able of use latest OpenSBI generic platform and U-Boot S-mode without any issues, to try this: 1) Compile u-boot.bin with this series 2) Compile OpenSBI generic fw_payload.bin using: make PLATFORM=generic FW_PAYLOAD_PATH=<u-boot-directory>/u-boot.bin FW_FDT_PATH=<u-boot-directory>/arch/riscv/dts/microchip-icicle-kit-a000.dtb

+Creating the HSS payload +------------------------

Please have a separate section for steps to compile HSS software for both Microchip boot-flow and Custom boot-flow.

This section describe how to create HSS payload for both Microchip boot-flow and Custom boot-flow

+Please refer to HSS documenation to build the HSS firmware. +(Note: HSS git repo is at +https://github.com/polarfire-soc/hart-software-services/blob/master +/tools/hss-payload-generator/README.md)

Compiling HSS is quite simple. Please provide explicit steps here itself.

+Once the payload binary is generated, it should be copied to the eMMC.

+FPGA design with HSS programming file +------------------------------------- +https://github.com/polarfire-soc/polarfire-soc-documentation/blob/master/boa... +/mpfs-icicle-kit-es/updating-icicle-kit/updating-icicle-kit-design-and-linux.md

+The HSS firmware runs from the PolarFire SoC eNVM on reset.

+eMMC +---- +Program eMMC with payload binary is explained in the PolarFire SoC documentation.

The HSS always picks up next stage (i.e. HSS payload) from a particular GPT partition with specific GUID type. Please describe these details over here. The below link does not describe it.

+(Note: PolarFire SoC Documentation git repo is at +https://github.com/polarfire-soc/polarfire-soc-documentation/blob/master/boa... +/mpfs-icicle-kit-es/updating-icicle-kit/updating-icicle-kit-design-and-linux.md#eMMC

+Once the payload image is copied to the eMMC, press CTRL+C in the HSS command +line interface, then type 'boot' and enter to boot the newly copied image.

+.. code-block:: none

• sudo dd if=<payload_binary> of=/dev/sdX bs=512

+Booting +------- +you should see the U-Boot prompt on UART0.

+Sample boot log from MPFS Icicle Kit +-------------------------------------------

+.. code-block:: none

• U-Boot 2020.10-00822-gb561436cc0-dirty (Oct 22 2020 - 11:21:24 +0530)
• CPU: rv64imafdc
• Model: Microchip PolarFire-SoC
• DRAM: 1 GiB
• MMC: sdhc@20008000: 0
• In: serial@20100000
• Out: serial@20100000
• Err: serial@20100000
• Net: eth0: ethernet@20112000
• Hit any key to stop autoboot: 0

+Now you can configure your networking, tftp server and use tftp boot method to +load uImage(with initramfs).

+.. code-block:: none

• RISC-V # setenv kernel_addr_r 0x80200000
• RISC-V # setenv fdt_addr_r 0x82200000
• RISC-V # setenv ipaddr 192.168.1.5
• RISC-V # setenv netmask 255.255.255.0
• RISC-V # setenv serverip 192.168.1.3
• RISC-V # setenv gateway 192.168.1.1
• RISC-V # tftpboot ${kernel_addr_r} uImage
• ethernet@20112000: PHY present at 9
• ethernet@20112000: Starting autonegotiation...
• ethernet@20112000: Autonegotiation complete
• ethernet@20112000: link up, 1000Mbps full-duplex (lpa: 0x7800)
• Using ethernet@20112000 device
• TFTP from server 192.168.1.3; our IP address is 192.168.1.5
• Filename 'uImage'.
• Load address: 0x80200000
• Loading: #################################################################

•                   #################################################################
  

•                   #################################################################
  

•                   #################################################################
  

•                   #################################################################
  

•                   #################################################################
  

•                   #################################################################
  

•                   #################################################################
  

•                   #################################################################
  

•                   #################################################################
  

•                   #################################################################
  

•                   #################################################################
  

•                   #################################################################
  

•                   #################################################################
  

•                   #################################################################
  

•                   ############
  

•                   6.4 MiB/s
  

• done
• Bytes transferred = 14482480 (dcfc30 hex)
• RISC-V # tftpboot ${fdt_addr_r} microchip-icicle-kit.dtb
• ethernet@20112000: PHY present at 9
• ethernet@20112000: Starting autonegotiation...
• ethernet@20112000: Autonegotiation complete
• ethernet@20112000: link up, 1000Mbps full-duplex (lpa: 0x7800)
• Using ethernet@20112000 device
• TFTP from server 192.168.1.3; our IP address is 192.168.1.5
• Filename 'riscvpc.dtb'.
• Load address: 0x82200000
• Loading: #

•                   2.5 MiB/s
  

• done
• Bytes transferred = 10282 (282a hex)
• RISC-V # bootm ${kernel_addr_r} - ${fdt_addr_r}
• ## Booting kernel from Legacy Image at 80200000 ...

•           Image Name:   Linux
  

•           Image Type:   RISC-V Linux Kernel Image (uncompressed)
  

•           Data Size:    14482416 Bytes = 13.8 MiB
  

•           Load Address: 80200000
  

•           Entry Point:  80200000
  

•           Verifying Checksum ... OK
  

• ## Flattened Device Tree blob at 82200000

•           Booting using the fdt blob at 0x82200000
  

•           Loading Kernel Image
  

•           Using Device Tree in place at 0000000082200000, end 0000000082205829
  

• Starting kernel ...
• [ 0.000000] OF: fdt: Ignoring memory range 0x80000000 - 0x80200000
• [ 0.000000] Linux version 5.6.17 (padmarao@padmarao-VirtualBox) (gcc version 7.2.0 (GCC)) #2 SMP Tue Jun 16 21:27:50 IST 2020
• [ 0.000000] initrd not found or empty - disabling initrd
• [ 0.000000] Zone ranges:
• [ 0.000000] DMA32 [mem 0x0000000080200000-0x00000000bfffffff]
• [ 0.000000] Normal empty
• [ 0.000000] Movable zone start for each node
• [ 0.000000] Early memory node ranges
• [ 0.000000] node 0: [mem 0x0000000080200000-0x00000000bfffffff]
• [ 0.000000] Initmem setup node 0 [mem 0x0000000080200000-0x00000000bfffffff]
• [ 0.000000] software IO TLB: mapped [mem 0xbb1f5000-0xbf1f5000] (64MB)
• [ 0.000000] elf_hwcap is 0x112d
• [ 0.000000] percpu: Embedded 14 pages/cpu s24856 r0 d32488 u57344
• [ 0.000000] Built 1 zonelists, mobility grouping on. Total pages: 258055
• [ 0.000000] Kernel command line: console=ttyS0,115200n8
• [ 0.000000] Dentry cache hash table entries: 131072 (order: 8, 1048576 bytes, linear)
• [ 0.000000] Inode-cache hash table entries: 65536 (order: 7, 524288 bytes, linear)
• [ 0.000000] Sorting __ex_table...
• [ 0.000000] mem auto-init: stack:off, heap alloc:off, heap free:off
• [ 0.000000] Memory: 950308K/1046528K available (3289K kernel code, 212K rwdata, 900K rodata, 9476K init, 250K bss, 96220K reserved, 0K cma-reserved)
• [ 0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=4, Nodes=1
• [ 0.000000] rcu: Hierarchical RCU implementation.
• [ 0.000000] rcu: RCU event tracing is enabled.
• [ 0.000000] rcu: RCU restricting CPUs from NR_CPUS=8 to nr_cpu_ids=4.
• [ 0.000000] rcu: RCU calculated value of scheduler-enlistment delay is 10 jiffies.
• [ 0.000000] rcu: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=4
• [ 0.000000] NR_IRQS: 0, nr_irqs: 0, preallocated irqs: 0
• [ 0.000000] plic: mapped 186 interrupts with 4 handlers for 9 contexts.
• [ 0.000000] riscv_timer_init_dt: Registering clocksource cpuid [0] hartid [1]
• [ 0.000000] clocksource: riscv_clocksource: mask: 0xffffffffffffffff max_cycles: 0x1d854df40, max_idle_ns: 3526361616960 ns
• [ 0.000015] sched_clock: 64 bits at 1000kHz, resolution 1000ns, wraps every 2199023255500ns
• [ 0.000311] Calibrating delay loop (skipped), value calculated using timer frequency.. 2.00 BogoMIPS (lpj=10000)
• [ 0.000349] pid_max: default: 32768 minimum: 301
• [ 0.000846] Mount-cache hash table entries: 2048 (order: 2, 16384 bytes, linear)
• [ 0.000964] Mountpoint-cache hash table entries: 2048 (order: 2, 16384 bytes, linear)
• [ 0.005630] rcu: Hierarchical SRCU implementation.
• [ 0.006901] smp: Bringing up secondary CPUs ...
• [ 0.012545] smp: Brought up 1 node, 4 CPUs
• [ 0.014431] devtmpfs: initialized
• [ 0.020526] random: get_random_bytes called from setup_net+0x36/0x192 with crng_init=0
• [ 0.020928] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns
• [ 0.020999] futex hash table entries: 1024 (order: 4, 65536 bytes, linear)
• [ 0.022768] NET: Registered protocol family 16
• [ 0.035478] microchip-pfsoc-clkcfg 20002000.clkcfg: Registered PFSOC core clocks
• [ 0.048429] SCSI subsystem initialized
• [ 0.049694] pps_core: LinuxPPS API ver. 1 registered
• [ 0.049719] pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti giometti@linux.it
• [ 0.049780] PTP clock support registered
• [ 0.051781] clocksource: Switched to clocksource riscv_clocksource
• [ 0.055326] NET: Registered protocol family 2
• [ 0.056922] tcp_listen_portaddr_hash hash table entries: 512 (order: 1, 8192 bytes, linear)
• [ 0.057053] TCP established hash table entries: 8192 (order: 4, 65536 bytes, linear)
• [ 0.057648] TCP bind hash table entries: 8192 (order: 5, 131072 bytes, linear)
• [ 0.058579] TCP: Hash tables configured (established 8192 bind 8192)
• [ 0.059648] UDP hash table entries: 512 (order: 2, 16384 bytes, linear)
• [ 0.059837] UDP-Lite hash table entries: 512 (order: 2, 16384 bytes, linear)
• [ 0.060707] NET: Registered protocol family 1
• [ 0.266229] workingset: timestamp_bits=62 max_order=18 bucket_order=0
• [ 0.287107] io scheduler mq-deadline registered
• [ 0.287140] io scheduler kyber registered
• [ 0.429601] Serial: 8250/16550 driver, 4 ports, IRQ sharing disabled
• [ 0.433979] printk: console [ttyS0] disabled
• [ 0.434154] 20000000.serial: ttyS0 at MMIO 0x20000000 (irq = 18, base_baud = 9375000) is a 16550A
• [ 0.928039] printk: console [ttyS0] enabled
• [ 0.939804] libphy: Fixed MDIO Bus: probed
• [ 0.948702] libphy: MACB_mii_bus: probed
• [ 0.993698] macb 20112000.ethernet eth0: Cadence GEM rev 0x0107010c at 0x20112000 irq 21 (56:34:12:00:fc:00)
• [ 1.006751] mousedev: PS/2 mouse device common for all mice
• [ 1.013803] i2c /dev entries driver
• [ 1.019451] sdhci: Secure Digital Host Controller Interface driver
• [ 1.027242] sdhci: Copyright(c) Pierre Ossman
• [ 1.032731] sdhci-pltfm: SDHCI platform and OF driver helper
• [ 1.091826] mmc0: SDHCI controller on 20008000.sdhc [20008000.sdhc] using ADMA 64-bit
• [ 1.102738] NET: Registered protocol family 17
• [ 1.170326] Freeing unused kernel memory: 9476K
• [ 1.176067] This architecture does not have kernel memory protection.
• [ 1.184157] Run /init as init process
• Starting logging: OK
• Starting mdev...
• /etc/init.d/S10mdev: line 21: can't create /proc/sys/kernel/hotplug: nonexiste[ 1.331981] mmc0: mmc_select_hs200 failed, error -74
• nt directory
• [ 1.355011] mmc0: new MMC card at address 0001
• [ 1.363981] mmcblk0: mmc0:0001 DG4008 7.28 GiB
• [ 1.372248] mmcblk0boot0: mmc0:0001 DG4008 partition 1 4.00 MiB
• [ 1.382292] mmcblk0boot1: mmc0:0001 DG4008 partition 2 4.00 MiB
• [ 1.390265] mmcblk0rpmb: mmc0:0001 DG4008 partition 3 4.00 MiB, chardev (251:0)
• [ 1.425234] GPT:Primary header thinks Alt. header is not at the end of the disk.
• [ 1.434656] GPT:2255809 != 15273599
• [ 1.439038] GPT:Alternate GPT header not at the end of the disk.
• [ 1.446671] GPT:2255809 != 15273599
• [ 1.451048] GPT: Use GNU Parted to correct GPT errors.
• [ 1.457755] mmcblk0: p1 p2 p3
• sort: /sys/devices/platform/Fixed: No such file or directory
• modprobe: can't change directory to '/lib/modules': No such file or directory
• Initializing random number generator... [ 2.830198] random: dd: uninitialized urandom read (512 bytes read)
• done.
• Starting network...
• [ 3.061867] macb 20112000.ethernet eth0: PHY [20112000.ethernet-ffffffff:09] driver [Vitesse VSC8662] (irq=POLL)
• [ 3.074674] macb 20112000.ethernet eth0: configuring for phy/sgmii link mode
• [ 3.084263] pps pps0: new PPS source ptp0
• [ 3.089710] macb 20112000.ethernet: gem-ptp-timer ptp clock registered.
• udhcpc (v1.24.2) started
• Sending discover...
• Sending discover...
• [ 6.380169] macb 20112000.ethernet eth0: Link is Up - 1Gbps/Full - flow control tx
• Sending discover...
• Sending select for 192.168.1.2...
• Lease of 192.168.1.2 obtained, lease time 86400
• deleting routers
• adding dns 192.168.1.1
• Starting dropbear sshd: [ 11.385619] random: dropbear: uninitialized urandom read (32 bytes read)
• OK
• Welcome to Buildroot
• buildroot login: root
• Password:
• #

+Booting U-Boot and Linux from eMMC +----------------------------------

+FPGA design with HSS programming file and Linux Image +----------------------------------------------------- +https://github.com/polarfire-soc/polarfire-soc-documentation/blob/master/boa... +/mpfs-icicle-kit-es/updating-icicle-kit/updating-icicle-kit-design-and-linux.md

+The HSS firmware runs from the PolarFire SoC eNVM on reset.

+eMMC +---- +Program eMMC with payload binary and Linux image is explained in the +PolarFire SoC documentation. +The payload binary should copied to partition 2 of the eMMC.

+(Note: PolarFire SoC Documentation git repo is at +https://github.com/polarfire-soc/polarfire-soc-documentation/blob/master/boa... +/mpfs-icicle-kit-es/updating-icicle-kit/updating-icicle-kit-design-and-linux.md#eMMC)

+once the Linux image and payload binary is copied to the eMMC, press CTRL+C +in the HSS command line interface, then type 'boot' and enter to boot the newly +copied payload and Linux image.

+.. code-block:: none

• zcat <linux-image>.wic.gz | sudo dd of=/dev/sdX bs=4096 iflag=fullblock oflag=direct conv=fsync status=progress
• sudo dd if=<payload_binary> of=/dev/sdX2 bs=512

+You should see the U-Boot prompt on UART0.

+Sample boot log from MPFS Icicle Kit +-------------------------------------------

+.. code-block:: none

• U-Boot 2020.10-00822-gb561436cc0-dirty (Oct 22 2020 - 11:21:24 +0530)
• CPU: rv64imafdc
• Model: Microchip PolarFire-SoC
• DRAM: 1 GiB
• MMC: sdhc@20008000: 0
• In: serial@20100000
• Out: serial@20100000
• Err: serial@20100000
• Net: eth0: ethernet@20112000
• Hit any key to stop autoboot: 0
• RISC-V # mmc info
• Device: sdhc@20008000
• Manufacturer ID: 45
• OEM: 100
• Name: DG400
• Bus Speed: 52000000
• Mode: MMC High Speed (52MHz)
• Rd Block Len: 512
• MMC version 5.1
• High Capacity: Yes
• Capacity: 7.3 GiB
• Bus Width: 4-bit
• Erase Group Size: 512 KiB
• HC WP Group Size: 8 MiB
• User Capacity: 7.3 GiB WRREL
• Boot Capacity: 4 MiB ENH
• RPMB Capacity: 4 MiB ENH
• RISC-V # mmc part
• Partition Map for MMC device 0 -- Partition Type: EFI
• Part Start LBA End LBA Name

•           Attributes
  

•           Type GUID
  

•           Partition GUID
  

•   1       0x00002000      0x0000b031      "boot"
  

•           attrs:  0x0000000000000004
  

•           type:   ebd0a0a2-b9e5-4433-87c0-68b6b72699c7
  

•           guid:   99ff6a94-f2e7-44dd-a7df-f3a2da106ef9
  

•   2       0x0000b032      0x0000f031      "primary"
  

•           attrs:  0x0000000000000000
  

•           type:   21686148-6449-6e6f-744e-656564454649
  

•           guid:   12006052-e64b-4423-beb0-b956ea00f1ba
  

•   3       0x00010000      0x00226b9f      "root"
  

•           attrs:  0x0000000000000000
  

•           type:   0fc63daf-8483-4772-8e79-3d69d8477de4
  

•           guid:   dd2c5619-2272-4c3c-8dc2-e21942e17ce6
  

• RISC-V # fatload mmc 0 ${ramdisk_addr_r} fitimage
• RISC-V # bootm ${ramdisk_addr_r}
• ## Loading kernel from FIT Image at 88300000 ...
• Using 'conf@microchip_icicle-kit-es-a000-microchip.dtb' configuration
• Trying 'kernel@1' kernel subimage

• Description:  Linux kernel
  

• Type:         Kernel Image
  

• Compression:  gzip compressed
  

• Data Start:   0x883000fc
  

• Data Size:    3574555 Bytes = 3.4 MiB
  

• Architecture: RISC-V
  

• OS:           Linux
  

• Load Address: 0x80200000
  

• Entry Point:  0x80200000
  

• Hash algo:    sha256
  

• Hash value:   21f18d72cf2f0a7192220abb577ad25c77c26960052d779aa02bf55dbf0a6403
  

• Verifying Hash Integrity ... sha256+ OK
• ## Loading fdt from FIT Image at 88300000 ...
• Using 'conf@microchip_icicle-kit-es-a000-microchip.dtb' configuration
• Trying 'fdt@microchip_icicle-kit-es-a000-microchip.dtb' fdt subimage

• Description:  Flattened Device Tree blob
  

• Type:         Flat Device Tree
  

• Compression:  uncompressed
  

• Data Start:   0x88668d44
  

• Data Size:    9760 Bytes = 9.5 KiB
  

• Architecture: RISC-V
  

• Load Address: 0x82200000
  

• Hash algo:    sha256
  

• Hash value:   5c3a9f30d41b6b8e53b47916e1f339b3a4d454006554d1f7e1f552ed62409f4b
  

• Verifying Hash Integrity ... sha256+ OK
• Loading fdt from 0x88668d44 to 0x82200000
• Booting using the fdt blob at 0x82200000
• Uncompressing Kernel Image
• Using Device Tree in place at 0000000082200000, end 000000008220561f
• Starting kernel ...
• [ 0.568114] printk: console [ttyS0] enabled
• [ 0.578504] printk: bootconsole [sbi0] disabled
• [ 0.592089] 20102000.serial: ttyS1 at MMIO 0x20102000 (irq = 13, base_baud = 9375000) is a 16550A
• [ 0.605351] 20104000.serial: ttyS2 at MMIO 0x20104000 (irq = 14, base_baud = 9375000) is a 16550A
• [ 0.643484] loop: module loaded
• [ 0.697876] Rounding down aligned max_sectors from 4294967295 to 4294967288
• [ 0.707427] db_root: cannot open: /etc/target
• [ 0.714543] libphy: Fixed MDIO Bus: probed
• [ 0.722533] libphy: MACB_mii_bus: probed
• [ 0.731024] macb 20112000.ethernet eth0: Cadence GEM rev 0x0107010c at 0x20112000 irq 17 (56:34:12:00:fc:00)
• [ 0.744081] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
• [ 0.752318] ehci-platform: EHCI generic platform driver
• [ 0.759092] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
• [ 0.766849] ohci-platform: OHCI generic platform driver
• [ 0.774100] usbcore: registered new interface driver cdc_acm
• [ 0.781164] cdc_acm: USB Abstract Control Model driver for USB modems and ISDN adapters
• [ 0.791986] i2c /dev entries driver
• [ 0.798057] microsemi-mss-i2c 2010b000.i2c: Microsemi I2C Probe Complete
• [ 0.807319] sdhci: Secure Digital Host Controller Interface driver
• [ 0.815094] sdhci: Copyright(c) Pierre Ossman
• [ 0.820527] sdhci-pltfm: SDHCI platform and OF driver helper
• [ 0.860631] mmc0: SDHCI controller on 20008000.sdhc [20008000.sdhc] using ADMA 64-bit
• [ 0.871064] usbcore: registered new interface driver usbhid
• [ 0.878085] usbhid: USB HID core driver
• [ 0.980158] mmc0: mmc_select_hs200 failed, error -74
• [ 0.989240] mmc0: new MMC card at address 0001
• [ 0.997930] mmcblk0: mmc0:0001 DG4008 7.28 GiB
• [ 1.005847] mmcblk0boot0: mmc0:0001 DG4008 partition 1 4.00 MiB
• [ 1.015369] mmcblk0boot1: mmc0:0001 DG4008 partition 2 4.00 MiB
• [ 1.023364] mmcblk0rpmb: mmc0:0001 DG4008 partition 3 4.00 MiB, chardev (247:0)
• [ 1.051870] GPT:Primary header thinks Alt. header is not at the end of the disk.
• [ 1.061102] GPT:2255809 != 15273599
• [ 1.065561] GPT:Alternate GPT header not at the end of the disk.
• [ 1.073088] GPT:2255809 != 15273599
• [ 1.077439] GPT: Use GNU Parted to correct GPT errors.
• [ 1.084003] mmcblk0: p1 p2 p3
• [ 1.891482] pac193x 0-0010: failed reading data from register 0xFD
• [ 1.899195] pac193x 0-0010: cannot read PAC193x revision
• [ 1.905955] pac193x: probe of 0-0010 failed with error -22
• [ 1.915372] NET: Registered protocol family 10
• [ 1.924358] Segment Routing with IPv6
• [ 1.929125] sit: IPv6, IPv4 and MPLS over IPv4 tunneling driver
• [ 1.938379] NET: Registered protocol family 17
• [ 1.944944] hctosys: unable to open rtc device (rtc0)
• [ 1.962991] EXT4-fs (mmcblk0p3): INFO: recovery required on readonly filesystem
• [ 1.972196] EXT4-fs (mmcblk0p3): write access will be enabled during recovery
• [ 2.054832] EXT4-fs (mmcblk0p3): recovery complete
• [ 2.064742] EXT4-fs (mmcblk0p3): mounted filesystem with ordered data mode. Opts: (null)
• [ 2.075057] VFS: Mounted root (ext4 filesystem) readonly on device 179:3.
• [ 2.084573] Freeing unused kernel memory: 168K
• [ 2.090122] This architecture does not have kernel memory protection.
• [ 2.098235] Run /sbin/init as init process
• [ 2.612563] random: fast init done
• [ 2.809794] systemd[1]: System time before build time, advancing clock.
• [ 2.868818] systemd[1]: systemd 244.3+ running in system mode. (+PAM -AUDIT -SELINUX +IMA -APPARMOR -SMACK +SYSVINIT +UTMP -LIBCRYPTSETUP -GCRYPT -GNUTLS +ACL +XZ -LZ4 -SECCOMP +BLKID -ELFUTILS +KMOD -IDN2 -IDN -PCRE2 default-hierarchy=hybrid)
• [ 2.896774] systemd[1]: Detected architecture riscv64.
• Welcome to OpenEmbedded nodistro.0!
• [ 2.953510] systemd[1]: Set hostname to <icicle-kit-es>.
• [ 4.269288] random: systemd: uninitialized urandom read (16 bytes read)
• [ 4.281772] systemd[1]: Created slice system-getty.slice.
• [ OK ] Created slice system-getty.slice.
• [ 4.321956] random: systemd: uninitialized urandom read (16 bytes read)
• [ 4.332378] systemd[1]: Created slice system-serial\x2dgetty.slice.
• [ OK ] Created slice system-serial\x2dgetty.slice.
• [ 4.371978] random: systemd: uninitialized urandom read (16 bytes read)
• [ 4.382106] systemd[1]: Created slice User and Session Slice.
• [ OK ] Created slice User and Session Slice.
• [ 4.422798] systemd[1]: Started Dispatch Password Requests to Console Directory Watch.
• [ OK ] Started Dispatch Password …ts to Console Directory Watch.
• [ 4.472693] systemd[1]: Started Forward Password Requests to Wall Directory Watch.
• [ OK ] Started Forward Password R…uests to Wall Directory Watch.
• [ 4.522586] systemd[1]: Reached target Paths.
• [ OK ] Reached target Paths.
• [ 4.562253] systemd[1]: Reached target Remote File Systems.
• [ OK ] Reached target Remote File Systems.
• [ 4.602154] systemd[1]: Reached target Slices.
• [ OK ] Reached target Slices.
• [ 4.642301] systemd[1]: Reached target Swap.
• [ OK ] Reached target Swap.
• [ 4.683183] systemd[1]: Listening on initctl Compatibility Named Pipe.
• [ OK ] Listening on initctl Compatibility Named Pipe.
• [ 4.750416] systemd[1]: Condition check resulted in Journal Audit Socket being skipped.
• [ 4.762960] systemd[1]: Listening on Journal Socket (/dev/log).
• [ OK ] Listening on Journal Socket (/dev/log).
• [ 4.803839] systemd[1]: Listening on Journal Socket.
• [ OK ] Listening on Journal Socket.
• [ 4.844307] systemd[1]: Listening on Network Service Netlink Socket.
• [ OK ] Listening on Network Service Netlink Socket.
• [ 4.883652] systemd[1]: Listening on udev Control Socket.
• [ OK ] Listening on udev Control Socket.
• [ 4.923218] systemd[1]: Listening on udev Kernel Socket.
• [ OK ] Listening on udev Kernel Socket.
• [ 4.963758] systemd[1]: Condition check resulted in Huge Pages File System being skipped.
• [ 4.975387] systemd[1]: Condition check resulted in POSIX Message Queue File System being skipped.
• [ 4.988039] systemd[1]: Condition check resulted in Kernel Debug File System being skipped.
• [ 5.008120] systemd[1]: Mounting Temporary Directory (/tmp)...

•        Mounting Temporary Directory (/tmp)...
  

• [ 5.052616] systemd[1]: Condition check resulted in Create list of static device nodes for the current kernel being skipped.
• [ 5.075536] systemd[1]: Starting File System Check on Root Device...

•        Starting File System Check on Root Device...
  

• [ 5.136915] systemd[1]: Starting Journal Service...

•        Starting Journal Service...
  

• [ 5.160116] systemd[1]: Condition check resulted in Load Kernel Modules being skipped.
• [ 5.172867] systemd[1]: Condition check resulted in FUSE Control File System being skipped.
• [ 5.197446] systemd[1]: Mounting Kernel Configuration File System...

•        Mounting Kernel Configuration File System...
  

• [ 5.222039] systemd[1]: Starting Apply Kernel Variables...

•        Starting Apply Kernel Variables...
  

• [ 5.242677] systemd[1]: Starting udev Coldplug all Devices...

•        Starting udev Coldplug all Devices...
  

• [ 5.277117] systemd[1]: Mounted Temporary Directory (/tmp).
• [ OK ] Mounted Temporary Di[ 5.288434] systemd[1]: Mounted Kernel Configuration File System.
• rectory (/tmp).
• [ OK ] Mounted Kernel Configuration File System.
• [ 5.347121] systemd[1]: Started Journal Service.
• [ OK ] Started Journal Service.
• [ OK ] Started Apply Kernel Variables.
• [ OK ] Started File System Check on Root Device.

•        Starting Remount Root and Kernel File Systems...
  

• [ 5.700818] EXT4-fs (mmcblk0p3): re-mounted. Opts: (null)
• [ OK ] Started Remount Root and Kernel File Systems.

•        Starting Flush Journal to Persistent Storage...
  

•        Starting Create Static Device Nodes in /dev...
  

• [ 5.857779] systemd-journald[75]: Received client request to flush runtime journal.
• [ OK ] Started Flush Journal to Persistent Storage.
• [ OK ] Started Create Static Device Nodes in /dev.
• [ OK ] Reached target Local File Systems (Pre).

•        Mounting /var/volatile...
  

•        Starting udev Kernel Device Manager...
  

• [ OK ] Mounted /var/volatile.

•        Starting Load/Save Random Seed...
  

• [ OK ] Reached target Local File Systems.

•        Starting Create Volatile Files and Directories...
  

• [ OK ] Started udev Kernel Device Manager.
• [ OK ] Started Create Volatile Files and Directories.

•        Starting Network Time Synchronization...
  

•        Starting Update UTMP about System Boot/Shutdown...
  

• [ OK ] Started Update UTMP about System Boot/Shutdown.
• [ OK ] Started Network Time Synchronization.
• [ OK ] Reached target System Time Set.
• [ OK ] Reached target System Time Synchronized.
• [ OK ] Started udev Coldplug all Devices.
• [ OK ] Reached target System Initialization.
• [ OK ] Started Daily Cleanup of Temporary Directories.
• [ OK ] Reached target Timers.
• [ OK ] Listening on D-Bus System Message Bus Socket.
• [ OK ] Listening on dropbear.socket.
• [ OK ] Reached target Sockets.
• [ OK ] Reached target Basic System.
• [ OK ] Started D-Bus System Message Bus.

•        Starting IPv6 Packet Filtering Framework...
  

•        Starting IPv4 Packet Filtering Framework...
  

•        Starting Login Service...
  

• [ OK ] Started IPv6 Packet Filtering Framework.
• [ OK ] Started IPv4 Packet Filtering Framework.
• [ 11.341568] random: crng init done
• [ 11.345841] random: 7 urandom warning(s) missed due to ratelimiting
• [ OK ] Started Load/Save Random Seed.
• [ OK ] Started Login Service.
• [ OK ] Reached target Network (Pre).

•        Starting Network Service...
  

• [ OK ] Started Network Service.
• [ 13.673774] macb 20112000.ethernet eth0: PHY [20112000.ethernet-ffffffff:09] driver [Vitesse VSC8662] (irq=POLL)
• [ 13.686635] macb 20112000.ethernet eth0: configuring for phy/sgmii link mode
• [ 13.702061] pps pps0: new PPS source ptp0
• [ 13.713053] macb 20112000.ethernet: gem-ptp-timer ptp clock registered.

•        Starting Network Name Resolution...
  

• [ OK ] Started Network Name Resolution.
• [ OK ] Reached target Network.
• [ OK ] Reached target Host and Network Name Lookups.
• [ OK ] Started Collectd.

•        Starting Permit User Sessions...
  

• [ OK ] Started Permit User Sessions.
• [ OK ] Started Getty on tty1.
• [ OK ] Started Serial Getty on ttyS0.
• [ OK ] Reached target Login Prompts.
• [ OK ] Reached target Multi-User System.

•        Starting Update UTMP about System Runlevel Changes...
  

• [ OK ] Started Update UTMP about System Runlevel Changes.
• OpenEmbedded nodistro.0 icicle-kit-es ttyS0
• icicle-kit-es login: [ 17.900317] macb 20112000.ethernet eth0: Link is Up - 1Gbps/Full - flow control tx
• [ 17.909943] IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
• icicle-kit-es login: root
• root@icicle-kit-es:~#

-- 2.17.1

I also agree with Jagan's comments about moving towards standardized boot-flow with SPL. I added HSS custom boot-flow to support U-Boot SPL development and use the latest OpenSBI firmwares on ICICLE kit.

Please include more documentation about how to use HSS custom boot-flow.

Regards, Anup