From mboxrd@z Thu Jan  1 00:00:00 1970
From: Padmarao Begari <padmarao.b@gmail.com>
Date: Wed, 4 Nov 2020 15:57:54 +0530
Subject: [PATCH v2 7/7] doc: board: Add Microchip MPFS Icicle Kit doc
In-Reply-To: <CAAhSdy0Jsa1G5usN98X5gExVjftZpp8mSO7-6OO=gmKKixqBVA@mail.gmail.com>
References: <20201022070715.14759-1-padmarao.begari@microchip.com>
 <20201022070715.14759-8-padmarao.begari@microchip.com>
 <CAAhSdy0Jsa1G5usN98X5gExVjftZpp8mSO7-6OO=gmKKixqBVA@mail.gmail.com>
Message-ID: <CAP95y-izAtR65xPrCCYHkqZ16HFeOn1hjQ97X_pfdd9B24Jo2g@mail.gmail.com>
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On Sun, Oct 25, 2020 at 12:24 PM Anup Patel <anup@brainfault.org> wrote:

> 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.
>
>
ok


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


> > +
> > +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/boards
> >
> +/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.
>
>
ok, we will describe.


> > +
> > +(Note: PolarFire SoC Documentation git repo is at
> > +
> https://github.com/polarfire-soc/polarfire-soc-documentation/blob/master/boards
> >
> +/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 at 20008000: 0
> > +   In:    serial at 20100000
> > +   Out:   serial at 20100000
> > +   Err:   serial at 20100000
> > +   Net:   eth0: ethernet at 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 at 20112000: PHY present at 9
> > +   ethernet at 20112000: Starting autonegotiation...
> > +   ethernet at 20112000: Autonegotiation complete
> > +   ethernet at 20112000: link up, 1000Mbps full-duplex (lpa: 0x7800)
> > +   Using ethernet at 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 at 20112000: PHY present at 9
> > +   ethernet at 20112000: Starting autonegotiation...
> > +   ethernet at 20112000: Autonegotiation complete
> > +   ethernet at 20112000: link up, 1000Mbps full-duplex (lpa: 0x7800)
> > +   Using ethernet at 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 at 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/boards
> >
> +/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/boards
> >
> +/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 at 20008000: 0
> > +   In:    serial at 20100000
> > +   Out:   serial at 20100000
> > +   Err:   serial at 20100000
> > +   Net:   eth0: ethernet at 20112000
> > +   Hit any key to stop autoboot:  0
> > +
> > +   RISC-V # mmc info
> > +   Device: sdhc at 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 at microchip_icicle-kit-es-a000-microchip.dtb'
> configuration
> > +   Trying 'kernel at 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 at microchip_icicle-kit-es-a000-microchip.dtb'
> configuration
> > +   Trying 'fdt at 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 at 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.
>
>
Ok, we will use the latest OpenSBI for custom boot-flow.


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

Regards
Padmarao

> Regards,
> Anup
>