doc: update AX25-AE350 RISC-V documentation
Add descriptions about U-Boot SPL feature and how to build and run. Signed-off-by: Rick Chen <rick@andestech.com> Cc: KC Lin <kclin@andestech.com> Cc: Alan Kao <alankao@andestech.com>
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Rick Chen
Andes
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04883bf7ac
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@ -324,6 +324,209 @@ Boot bbl and riscv-linux via U-Boot on QEMU
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/ #
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/ #
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TODO
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Running U-Boot SPL
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----
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------------------
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Boot bbl and riscv-linux via U-Boot on AE350 board
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The U-Boot SPL will boot in M mode and load the FIT image which include
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OpenSBI and U-Boot proper images. After loading progress, it will jump
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to OpenSBI first and then U-Boot proper which will run in S mode.
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How to build U-Boot SPL
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-----------------------
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Before building U-Boot SPL, OpenSBI must be build first. OpenSBI can be
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cloned and build for AE350 as below:
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git clone https://github.com/riscv/opensbi.git
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cd opensbi
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make PLATFORM=andes/ae350
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Copy OpenSBI FW_DYNAMIC image (build\platform\andes\ae350\firmware\fw_dynamic.bin)
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into U-Boot root directory
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How to build U-Boot SPL booting from RAM
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----------------------------------------
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With ae350_rv[32|64]_spl_defconfigs:
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U-Boot SPL will be loaded by gdb or FSBL and runs in RAM in machine mode
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and then load FIT image from RAM device on AE350.
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How to build U-Boot SPL booting from ROM
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----------------------------------------
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With ae350_rv[32|64]_spl_xip_defconfigs:
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U-Boot SPL can be burned into SPI flash and run in flash in machine mode
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and then load FIT image from SPI flash or MMC device on AE350.
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Messages of U-Boot SPL boots Kernel on AE350 board
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--------------------------------------------------
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.. code-block:: none
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U-Boot SPL 2020.01-rc1-00292-g67a3313-dirty (Nov 14 2019 - 11:26:21 +0800)
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Trying to boot from RAM
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OpenSBI v0.5-1-gdd8ef28 (Nov 14 2019 11:08:39)
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____ _____ ____ _____
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/ __ \ / ____| _ \_ _|
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| | | |_ __ ___ _ __ | (___ | |_) || |
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| | | | '_ \ / _ \ '_ \ \___ \| _ < | |
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| |__| | |_) | __/ | | |____) | |_) || |_
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\____/| .__/ \___|_| |_|_____/|____/_____|
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Platform Name : Andes AE350
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Platform HART Features : RV64ACIMSUX
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Platform Max HARTs : 4
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Current Hart : 0
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Firmware Base : 0x0
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Firmware Size : 84 KB
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Runtime SBI Version : 0.2
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PMP0: 0x0000000000000000-0x000000000001ffff (A)
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PMP1: 0x0000000000000000-0x00000001ffffffff (A,R,W,X)
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U-Boot 2020.01-rc1-00292-g67a3313-dirty (Nov 14 2019 - 11:26:21 +0800)
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DRAM: 1 GiB
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Flash: 64 MiB
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MMC: mmc@f0e00000: 0
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Loading Environment from SPI Flash... SF: Detected mx25u1635e with page size 256 Bytes, erase size 4 KiB, total 2 MiB
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OK
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In: serial@f0300000
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Out: serial@f0300000
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Err: serial@f0300000
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Net: no alias for ethernet0
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Warning: mac@e0100000 (eth0) using random MAC address - a2:ae:93:7b:cc:8f
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eth0: mac@e0100000
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Hit any key to stop autoboot: 0
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6455 bytes read in 31 ms (203.1 KiB/s)
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20421684 bytes read in 8647 ms (2.3 MiB/s)
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## Booting kernel from Legacy Image at 00600000 ...
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Image Name:
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Image Type: RISC-V Linux Kernel Image (uncompressed)
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Data Size: 20421620 Bytes = 19.5 MiB
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Load Address: 00200000
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Entry Point: 00200000
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Verifying Checksum ... OK
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## Flattened Device Tree blob at 20000000
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Booting using the fdt blob at 0x20000000
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Loading Kernel Image
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Loading Device Tree to 000000001effb000, end 000000001efff936 ... OK
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Starting kernel ...
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OF: fdt: Ignoring memory range 0x0 - 0x200000
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Linux version 4.17.0-00253-g49136e10bcb2 (sqa@atcsqa07) (gcc version 7.3.0 (2019-04-06_nds64le-linux-glibc-v5_experimental)) #1 SMP PREEMPT Sat Apr 6 23:41:49 CST 2019
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bootconsole [early0] enabled
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Initial ramdisk at: 0x (ptrval) (13665712 bytes)
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Zone ranges:
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DMA32 [mem 0x0000000000200000-0x000000003fffffff]
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Normal empty
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Movable zone start for each node
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Early memory node ranges
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node 0: [mem 0x0000000000200000-0x000000003fffffff]
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Initmem setup node 0 [mem 0x0000000000200000-0x000000003fffffff]
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software IO TLB [mem 0x3b1f8000-0x3f1f8000] (64MB) mapped at [ (ptrval)- (ptrval)]
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elf_platform is rv64i2p0m2p0a2p0c2p0xv5-0p0
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compatible privileged spec version 1.10
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percpu: Embedded 16 pages/cpu @ (ptrval) s28184 r8192 d29160 u65536
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Built 1 zonelists, mobility grouping on. Total pages: 258055
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Kernel command line: console=ttyS0,38400n8 debug loglevel=7
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log_buf_len individual max cpu contribution: 4096 bytes
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log_buf_len total cpu_extra contributions: 12288 bytes
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log_buf_len min size: 16384 bytes
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log_buf_len: 32768 bytes
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early log buf free: 14608(89%)
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Dentry cache hash table entries: 131072 (order: 8, 1048576 bytes)
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Inode-cache hash table entries: 65536 (order: 7, 524288 bytes)
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Sorting __ex_table...
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Memory: 944428K/1046528K available (3979K kernel code, 246K rwdata, 1490K rodata, 13523K init, 688K bss, 102100K reserved, 0K cma-reserved)
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SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=4, Nodes=1
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Preemptible hierarchical RCU implementation.
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Tasks RCU enabled.
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NR_IRQS: 72, nr_irqs: 72, preallocated irqs: 0
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riscv,cpu_intc,0: 64 local interrupts mapped
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riscv,cpu_intc,1: 64 local interrupts mapped
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riscv,cpu_intc,2: 64 local interrupts mapped
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riscv,cpu_intc,3: 64 local interrupts mapped
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riscv,plic0,e4000000: mapped 71 interrupts to 8/8 handlers
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clocksource: riscv_clocksource: mask: 0xffffffffffffffff max_cycles: 0x1bacf917bf, max_idle_ns: 881590412290 ns
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sched_clock: 64 bits at 60MHz, resolution 16ns, wraps every 4398046511098ns
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Console: colour dummy device 40x30
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Calibrating delay loop (skipped), value calculated using timer frequency.. 120.00 BogoMIPS (lpj=600000)
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pid_max: default: 32768 minimum: 301
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Mount-cache hash table entries: 2048 (order: 2, 16384 bytes)
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Mountpoint-cache hash table entries: 2048 (order: 2, 16384 bytes)
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Hierarchical SRCU implementation.
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smp: Bringing up secondary CPUs ...
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CPU0: online
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CPU2: online
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CPU3: online
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smp: Brought up 1 node, 4 CPUs
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devtmpfs: initialized
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random: get_random_u32 called from bucket_table_alloc+0x198/0x1d8 with crng_init=0
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clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns
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futex hash table entries: 1024 (order: 4, 65536 bytes)
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NET: Registered protocol family 16
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Advanced Linux Sound Architecture Driver Initialized.
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clocksource: Switched to clocksource riscv_clocksource
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NET: Registered protocol family 2
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tcp_listen_portaddr_hash hash table entries: 512 (order: 1, 8192 bytes)
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TCP established hash table entries: 8192 (order: 4, 65536 bytes)
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TCP bind hash table entries: 8192 (order: 5, 131072 bytes)
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TCP: Hash tables configured (established 8192 bind 8192)
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UDP hash table entries: 512 (order: 2, 16384 bytes)
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UDP-Lite hash table entries: 512 (order: 2, 16384 bytes)
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NET: Registered protocol family 1
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RPC: Registered named UNIX socket transport module.
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RPC: Registered udp transport module.
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RPC: Registered tcp transport module.
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RPC: Registered tcp NFSv4.1 backchannel transport module.
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Unpacking initramfs...
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workingset: timestamp_bits=62 max_order=18 bucket_order=0
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NFS: Registering the id_resolver key type
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Key type id_resolver registered
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Key type id_legacy registered
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nfs4filelayout_init: NFSv4 File Layout Driver Registering...
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io scheduler noop registered
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io scheduler cfq registered (default)
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io scheduler mq-deadline registered
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io scheduler kyber registered
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Console: switching to colour frame buffer device 40x30
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Serial: 8250/16550 driver, 4 ports, IRQ sharing disabled
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console [ttyS0] disabled
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f0300000.serial: ttyS0 at MMIO 0xf0300020 (irq = 20, base_baud = 1228800) is a 16550A
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console [ttyS0] enabled
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console [ttyS0] enabled
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bootconsole [early0] disabled
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bootconsole [early0] disabled
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loop: module loaded
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tun: Universal TUN/TAP device driver, 1.6
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ftmac100: Loading version 0.2 ...
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ftmac100 e0100000.mac eth0: irq 21, mapped at (ptrval)
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ftmac100 e0100000.mac eth0: generated random MAC address 4e:fd:bd:f3:04:fc
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ftsdc010 f0e00000.mmc: mmc0 - using hw SDIO IRQ
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mmc0: new SDHC card at address d555
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ftssp010 card registered!
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mmcblk0: mmc0:d555 SD04G 3.79 GiB
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NET: Registered protocol family 10
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mmcblk0: p1
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Segment Routing with IPv6
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sit: IPv6, IPv4 and MPLS over IPv4 tunneling driver
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NET: Registered protocol family 17
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NET: Registered protocol family 15
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ALSA device list:
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#0: ftssp_ac97 controller
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Freeing unused kernel memory: 13520K
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This architecture does not have kernel memory protection.
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Sysinit starting
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Sat Apr 6 23:33:53 CST 2019
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nfs4flexfilelayout_init: NFSv4 Flexfile Layout Driver Registering...
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~ #
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