Commit 04883bf7 authored by Rick Chen's avatar Rick Chen Committed by Andes
Browse files

doc: update AX25-AE350 RISC-V documentation

Add descriptions about U-Boot SPL feature and how to build and run.
Signed-off-by: default avatarRick Chen <>
Cc: KC Lin <>
Cc: Alan Kao <>
parent cca8b1e5
......@@ -324,6 +324,209 @@ Boot bbl and riscv-linux via U-Boot on QEMU
/ #
Boot bbl and riscv-linux via U-Boot on AE350 board
Running U-Boot SPL
The U-Boot SPL will boot in M mode and load the FIT image which include
OpenSBI and U-Boot proper images. After loading progress, it will jump
to OpenSBI first and then U-Boot proper which will run in S mode.
How to build U-Boot SPL
Before building U-Boot SPL, OpenSBI must be build first. OpenSBI can be
cloned and build for AE350 as below:
git clone
cd opensbi
make PLATFORM=andes/ae350
Copy OpenSBI FW_DYNAMIC image (build\platform\andes\ae350\firmware\fw_dynamic.bin)
into U-Boot root directory
How to build U-Boot SPL booting from RAM
With ae350_rv[32|64]_spl_defconfigs:
U-Boot SPL will be loaded by gdb or FSBL and runs in RAM in machine mode
and then load FIT image from RAM device on AE350.
How to build U-Boot SPL booting from ROM
With ae350_rv[32|64]_spl_xip_defconfigs:
U-Boot SPL can be burned into SPI flash and run in flash in machine mode
and then load FIT image from SPI flash or MMC device on AE350.
Messages of U-Boot SPL boots Kernel on AE350 board
.. code-block:: none
U-Boot SPL 2020.01-rc1-00292-g67a3313-dirty (Nov 14 2019 - 11:26:21 +0800)
Trying to boot from RAM
OpenSBI v0.5-1-gdd8ef28 (Nov 14 2019 11:08:39)
____ _____ ____ _____
/ __ \ / ____| _ \_ _|
| | | |_ __ ___ _ __ | (___ | |_) || |
| | | | '_ \ / _ \ '_ \ \___ \| _ < | |
| |__| | |_) | __/ | | |____) | |_) || |_
\____/| .__/ \___|_| |_|_____/|____/_____|
| |
Platform Name : Andes AE350
Platform HART Features : RV64ACIMSUX
Platform Max HARTs : 4
Current Hart : 0
Firmware Base : 0x0
Firmware Size : 84 KB
Runtime SBI Version : 0.2
PMP0: 0x0000000000000000-0x000000000001ffff (A)
PMP1: 0x0000000000000000-0x00000001ffffffff (A,R,W,X)
U-Boot 2020.01-rc1-00292-g67a3313-dirty (Nov 14 2019 - 11:26:21 +0800)
Flash: 64 MiB
MMC: mmc@f0e00000: 0
Loading Environment from SPI Flash... SF: Detected mx25u1635e with page size 256 Bytes, erase size 4 KiB, total 2 MiB
In: serial@f0300000
Out: serial@f0300000
Err: serial@f0300000
Net: no alias for ethernet0
Warning: mac@e0100000 (eth0) using random MAC address - a2:ae:93:7b:cc:8f
eth0: mac@e0100000
Hit any key to stop autoboot: 0
6455 bytes read in 31 ms (203.1 KiB/s)
20421684 bytes read in 8647 ms (2.3 MiB/s)
## Booting kernel from Legacy Image at 00600000 ...
Image Name:
Image Type: RISC-V Linux Kernel Image (uncompressed)
Data Size: 20421620 Bytes = 19.5 MiB
Load Address: 00200000
Entry Point: 00200000
Verifying Checksum ... OK
## Flattened Device Tree blob at 20000000
Booting using the fdt blob at 0x20000000
Loading Kernel Image
Loading Device Tree to 000000001effb000, end 000000001efff936 ... OK
Starting kernel ...
OF: fdt: Ignoring memory range 0x0 - 0x200000
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
bootconsole [early0] enabled
Initial ramdisk at: 0x (ptrval) (13665712 bytes)
Zone ranges:
DMA32 [mem 0x0000000000200000-0x000000003fffffff]
Normal empty
Movable zone start for each node
Early memory node ranges
node 0: [mem 0x0000000000200000-0x000000003fffffff]
Initmem setup node 0 [mem 0x0000000000200000-0x000000003fffffff]
software IO TLB [mem 0x3b1f8000-0x3f1f8000] (64MB) mapped at [ (ptrval)- (ptrval)]
elf_platform is rv64i2p0m2p0a2p0c2p0xv5-0p0
compatible privileged spec version 1.10
percpu: Embedded 16 pages/cpu @ (ptrval) s28184 r8192 d29160 u65536
Built 1 zonelists, mobility grouping on. Total pages: 258055
Kernel command line: console=ttyS0,38400n8 debug loglevel=7
log_buf_len individual max cpu contribution: 4096 bytes
log_buf_len total cpu_extra contributions: 12288 bytes
log_buf_len min size: 16384 bytes
log_buf_len: 32768 bytes
early log buf free: 14608(89%)
Dentry cache hash table entries: 131072 (order: 8, 1048576 bytes)
Inode-cache hash table entries: 65536 (order: 7, 524288 bytes)
Sorting __ex_table...
Memory: 944428K/1046528K available (3979K kernel code, 246K rwdata, 1490K rodata, 13523K init, 688K bss, 102100K reserved, 0K cma-reserved)
SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=4, Nodes=1
Preemptible hierarchical RCU implementation.
Tasks RCU enabled.
NR_IRQS: 72, nr_irqs: 72, preallocated irqs: 0
riscv,cpu_intc,0: 64 local interrupts mapped
riscv,cpu_intc,1: 64 local interrupts mapped
riscv,cpu_intc,2: 64 local interrupts mapped
riscv,cpu_intc,3: 64 local interrupts mapped
riscv,plic0,e4000000: mapped 71 interrupts to 8/8 handlers
clocksource: riscv_clocksource: mask: 0xffffffffffffffff max_cycles: 0x1bacf917bf, max_idle_ns: 881590412290 ns
sched_clock: 64 bits at 60MHz, resolution 16ns, wraps every 4398046511098ns
Console: colour dummy device 40x30
Calibrating delay loop (skipped), value calculated using timer frequency.. 120.00 BogoMIPS (lpj=600000)
pid_max: default: 32768 minimum: 301
Mount-cache hash table entries: 2048 (order: 2, 16384 bytes)
Mountpoint-cache hash table entries: 2048 (order: 2, 16384 bytes)
Hierarchical SRCU implementation.
smp: Bringing up secondary CPUs ...
CPU0: online
CPU2: online
CPU3: online
smp: Brought up 1 node, 4 CPUs
devtmpfs: initialized
random: get_random_u32 called from bucket_table_alloc+0x198/0x1d8 with crng_init=0
clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns
futex hash table entries: 1024 (order: 4, 65536 bytes)
NET: Registered protocol family 16
Advanced Linux Sound Architecture Driver Initialized.
clocksource: Switched to clocksource riscv_clocksource
NET: Registered protocol family 2
tcp_listen_portaddr_hash hash table entries: 512 (order: 1, 8192 bytes)
TCP established hash table entries: 8192 (order: 4, 65536 bytes)
TCP bind hash table entries: 8192 (order: 5, 131072 bytes)
TCP: Hash tables configured (established 8192 bind 8192)
UDP hash table entries: 512 (order: 2, 16384 bytes)
UDP-Lite hash table entries: 512 (order: 2, 16384 bytes)
NET: Registered protocol family 1
RPC: Registered named UNIX socket transport module.
RPC: Registered udp transport module.
RPC: Registered tcp transport module.
RPC: Registered tcp NFSv4.1 backchannel transport module.
Unpacking initramfs...
workingset: timestamp_bits=62 max_order=18 bucket_order=0
NFS: Registering the id_resolver key type
Key type id_resolver registered
Key type id_legacy registered
nfs4filelayout_init: NFSv4 File Layout Driver Registering...
io scheduler noop registered
io scheduler cfq registered (default)
io scheduler mq-deadline registered
io scheduler kyber registered
Console: switching to colour frame buffer device 40x30
Serial: 8250/16550 driver, 4 ports, IRQ sharing disabled
console [ttyS0] disabled
f0300000.serial: ttyS0 at MMIO 0xf0300020 (irq = 20, base_baud = 1228800) is a 16550A
console [ttyS0] enabled
console [ttyS0] enabled
bootconsole [early0] disabled
bootconsole [early0] disabled
loop: module loaded
tun: Universal TUN/TAP device driver, 1.6
ftmac100: Loading version 0.2 ...
ftmac100 e0100000.mac eth0: irq 21, mapped at (ptrval)
ftmac100 e0100000.mac eth0: generated random MAC address 4e:fd:bd:f3:04:fc
ftsdc010 f0e00000.mmc: mmc0 - using hw SDIO IRQ
mmc0: new SDHC card at address d555
ftssp010 card registered!
mmcblk0: mmc0:d555 SD04G 3.79 GiB
NET: Registered protocol family 10
mmcblk0: p1
Segment Routing with IPv6
sit: IPv6, IPv4 and MPLS over IPv4 tunneling driver
NET: Registered protocol family 17
NET: Registered protocol family 15
ALSA device list:
#0: ftssp_ac97 controller
Freeing unused kernel memory: 13520K
This architecture does not have kernel memory protection.
Sysinit starting
Sat Apr 6 23:33:53 CST 2019
nfs4flexfilelayout_init: NFSv4 Flexfile Layout Driver Registering...
~ #
Markdown is supported
0% or .
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment