The Spacemit Version of OpenSBI is outdated and disabled printf and consumes the wrong dts with wrong isa string, causing some debugging features that needs printf does not work, and zicboz can not be activated.
This file will tell you how to replace OpenSBI to mainline (v1.4+) on Spacemit K1, and it also compatible with factory sdk kernel.
You have flashed Bianbu or Armbian for BPI-F3 and flashed to SD Card.
The layout of boot images can be found from GPT:
sudo gdisk /dev/rdisk5
GPT fdisk (gdisk) version 1.0.9
Partition table scan:
MBR: MBR only
BSD: not present
APM: not present
GPT: present
Found valid MBR and GPT. Which do you want to use?
1 - MBR
2 - GPT
3 - Create blank GPT
Your answer: 2
Using GPT and creating fresh protective MBR.
Command (? for help): p
Disk /dev/rdisk5: 120934400 sectors, 57.7 GiB
Sector size (logical): 512 bytes
Disk identifier (GUID): 9DCE1E0A-7673-4B7D-BC12-D7114641BF8A
Partition table holds up to 128 entries
Main partition table begins at sector 2 and ends at sector 33
First usable sector is 34, last usable sector is 8158
Partitions will be aligned on 256-sector boundaries
Total free space is 2493 sectors (1.2 MiB)
Number Start (sector) End (sector) Size Code Name
1 512 1023 256.0 KiB 8300 fsbl
2 1024 1279 128.0 KiB 8300 env
3 1280 2047 384.0 KiB 8300 opensbi
4 2048 6143 2.0 MiB 8300 uboot
Command (? for help):Thus, we can directly replace the opensbi from the 1280 sector.
Which is the same as the armbian script from BananaPi F3.
ssh to k1, then:
Install these packages:
apt install -y u-boot-tools build-essential device-tree-compilerCompile opensbi:
[cyy@k1 ~]$ git clone https://github.com/cyyself/opensbi.git -b k1-opensbi
Cloning into 'opensbi'...
remote: Enumerating objects: 13172, done.
remote: Counting objects: 100% (325/325), done.
remote: Compressing objects: 100% (211/211), done.
remote: Total 13172 (delta 104), reused 265 (delta 94), pack-reused 12847
Receiving objects: 100% (13172/13172), 2.89 MiB | 3.69 MiB/s, done.
Resolving deltas: 100% (8049/8049), done.
[cyy@k1 ~]$ cd opensbi/
[cyy@k1 opensbi]$ make PLATFORM=generic -j `nproc`
Loaded configuration '/home/cyy/opensbi/platform/generic/configs/defconfig'
Configuration saved to '/home/cyy/opensbi/build/platform/generic/kconfig/.config'
...
FIT description: Configuration to load OpenSBI before U-Boot
Created: Mon Jun 10 15:06:00 2024
Image 0 (opensbi)
Description: OpenSBI fw_dynamic Firmware
Created: Mon Jun 10 15:06:00 2024
Type: Firmware
Compression: uncompressed
Data Size: 272648 Bytes = 266.26 KiB = 0.26 MiB
Architecture: RISC-V
OS: RISC-V OpenSBI
Load Address: 0x00000000
Hash algo: crc32
Hash value: 40e14962
Default Configuration: 'config_1'
Configuration 0 (config_1)
Description: opensbi FIT config
Kernel: unavailable
Firmware: opensbi[cyy@k1 opensbi]$ sudo dd if=build/platform/generic/firmware/fw_dynamic.itb of=/dev/mmcblk0 bs=512 seek=1280
535+1 records in
535+1 records out
274303 bytes (274 kB, 268 KiB) copied, 0.0243828 s, 11.2 MB/s
[cyy@k1 opensbi]$After reboot, you will see new OpenSBI installed.
sys: 0x2
try sd...
bm:3
j...
U-Boot SPL 2022.10spacemit (May 06 2024 - 03:49:58 +0000)
lpddr4_silicon_init consume 11ms
BPI: partition=2 part_name[uboot]
BPI: p=1 info.name=[XBOOTLDR partition] info.start[32000]
BPI: p=2 info.name=[Linux filesystem] info.start[b2000]
BPI: p=3 info.name=[uboot] info.start[800]
BPI:hdr read sector 800, count=1
Boot from fit configuration k1-x_deb1
## Checking hash(es) for config conf_2 ... OK
## Checking hash(es) for Image uboot ... crc32+ OK
## Checking hash(es) for Image fdt_2 ... crc32+ OK
BPI: partition=1 part_name[opensbi]
BPI: p=1 info.name=[XBOOTLDR partition] info.start[32000]
BPI: p=2 info.name=[Linux filesystem] info.start[b2000]
BPI: p=3 info.name=[opensbi] info.start[500]
BPI:hdr read sector 500, count=1
## Checking hash(es) for config config_1 ... OK
## Checking hash(es) for Image opensbi ... crc32+ OK
OpenSBI v1.0-654-gafc2617
____ _____ ____ _____
/ __ \ / ____| _ \_ _|
| | | |_ __ ___ _ __ | (___ | |_) || |
| | | | '_ \ / _ \ '_ \ \___ \| _ < | |
| |__| | |_) | __/ | | |____) | |_) || |_
\____/| .__/ \___|_| |_|_____/|____/_____|
| |
|_|
PSCI Power Domain Map:
Domain Node : Level 2, parent_node 4294967295, State ON (0x0)
Domain Node : Level 1, parent_node 0, State ON (0x0)
Domain Node : Level 1, parent_node 0, State OFF (0x2)
CPU Node : MPID 0x0, parent_node 1, State ON (0x0)
CPU Node : MPID 0xffffffffffffffff, parent_node 1, State OFF (0x2)
CPU Node : MPID 0xffffffffffffffff, parent_node 1, State OFF (0x2)
CPU Node : MPID 0xffffffffffffffff, parent_node 1, State OFF (0x2)
CPU Node : MPID 0xffffffffffffffff, parent_node 2, State OFF (0x2)
CPU Node : MPID 0xffffffffffffffff, parent_node 2, State OFF (0x2)
CPU Node : MPID 0xffffffffffffffff, parent_node 2, State OFF (0x2)
CPU Node : MPID 0xffffffffffffffff, parent_node 2, State OFF (0x2)
Platform Name : spacemit k1-x deb1 board
Platform Features : medeleg
Platform HART Count : 8
Platform IPI Device : aclint-mswi
Platform Timer Device : aclint-mtimer @ 24000000Hz
Platform Console Device : uart8250
Platform HSM Device : spacemit-hsm
Platform PMU Device : ---
Platform Reboot Device : ---
Platform Shutdown Device : ---
Platform Suspend Device : spacemit-system-suspend
Platform CPPC Device : ---
Firmware Base : 0x0
Firmware Size : 399 KB
Firmware RW Offset : 0x40000
Firmware RW Size : 143 KB
Firmware Heap Offset : 0x57000
Firmware Heap Size : 51 KB (total), 3 KB (reserved), 11 KB (used), 36 KB (free)
Firmware Scratch Size : 4096 B (total), 1536 B (used), 2560 B (free)
Runtime SBI Version : 2.0
Domain0 Name : root
Domain0 Boot HART : 0
Domain0 HARTs : 0*,1*,2*,3*,4*,5*,6*,7*
Domain0 Region00 : 0x00000000d4017000-0x00000000d4017fff M: (I,R,W) S/U: (R,W)
Domain0 Region01 : 0x00000000e4000000-0x00000000e400ffff M: (I,R,W) S/U: ()
Domain0 Region02 : 0x0000000000000000-0x000000000003ffff M: (R,X) S/U: ()
Domain0 Region03 : 0x0000000000040000-0x000000000007ffff M: (R,W) S/U: ()
Domain0 Region04 : 0x00000000e0000000-0x00000000e3ffffff M: (I,R,W) S/U: (R,W)
Domain0 Region05 : 0x0000000000000000-0xffffffffffffffff M: () S/U: (R,W,X)
Domain0 Next Address : 0x0000000000200000
Domain0 Next Arg1 : 0x0000000000317770
Domain0 Next Mode : S-mode
Domain0 SysReset : yes
Domain0 SysSuspend : yes
Boot HART ID : 0
Boot HART Domain : root
Boot HART Priv Version : v1.12
Boot HART Base ISA : rv64imafdcbvx
Boot HART ISA Extensions : sscofpmf,sstc,zicntr,zihpm,zicboz,zicbom,svpbmt,sdtrig
Boot HART PMP Count : 32
Boot HART PMP Granularity : 12 bits
Boot HART PMP Address Bits: 38
Boot HART MHPM Info : 16 (0x0007fff8)
Boot HART Debug Triggers : 8 triggers
Boot HART MIDELEG : 0x0000000000002222
Boot HART MEDELEG : 0x000000000000b109
U-Boot 2022.10spacemit (May 06 2024 - 03:49:58 +0000)
CPU: rv64imafdcvsu_zicsr_zifencei_zicbom_zihintpause_zba_zbb_zbc_zbs_svpbmt_sstc_sscofpmf
Model: spacemit k1-x deb1 board
DRAM: 4 GiB
Core: 399 devices, 27 uclasses, devicetree: boardNote: The version shows v1.0, but it is actually the master branch after the v1.4 tag.
K1 has a special pxa-uart device from factory sdk, which needs a dma driver to work. What's worse, once the driver is enabled in the kernel, it will produce a nonportable kernel, which is very bad. A simple work around can be turn on CONFIG_RISCV_SBI_V01, CONFIG_NONPORTABLE and CONFIG_HVC_RISCV_SBI, then use console=hvc0 so we will have a pulling based uart for debugging purpose.
Luckily, I found that uart is compatible with intel,xscale-uart, so we can write dts like this:
uart_clk: uart-clock {
compatible = "fixed-clock";
clock-frequency = <14000000>;
#clock-cells = <0>;
};
uart0: uart@d4017000 {
compatible = "intel,xscale-uart";
reg = <0x0 0xd4017000 0x0 0x100>;
clocks = <&uart_clk>;
reg-shift = <2>;
reg-io-width = <4>;
interrupts = <42>;
interrupt-parent = <&plic>;
};
Then it works:
~ # uname -a
Linux (none) 6.9.0-05160-g20b43b33a764 #30 SMP Mon Jun 10 22:42:55 CST 2024 riscv64 GNU/Linux
~ # cat proc/cpuinfo | head
processor : 0
hart : 0
isa : rv64imafdcv_zicbom_zicboz_zicntr_zicond_zicsr_zifencei_zihintpause_zihpm_zfh_zba_zbb_zbc_zbs_zvfh_sscofpmf_sstc_svpbmt
mmu : sv39
mvendorid : 0x710
marchid : 0x8000000058000001
mimpid : 0x1000000049772200
hart isa : rv64imafdcv_zicbom_zicboz_zicntr_zicond_zicsr_zifencei_zihintpause_zihpm_zfh_zba_zbb_zbc_zbs_zvfh_sscofpmf_sstc_svpbmt
processor : 1
~ # cat /proc/interrupts
CPU0 CPU1 CPU2 CPU3 CPU4 CPU5 CPU6 CPU7
10: 621 384 379 1007 415 201 289 306 RISC-V INTC 5 Edge riscv-timer
12: 117 0 0 0 0 0 0 0 SiFive PLIC 42 Edge ttyS0
13: 0 0 0 0 0 0 0 0 RISC-V INTC 13 Edge riscv-pmu
IPI0: 0 8 5 13 14 6 10 7 Rescheduling interrupts
IPI1: 752 101 55 171 654 86 21 28 Function call interrupts
IPI2: 0 0 0 0 0 0 0 0 CPU stop interrupts
IPI3: 0 0 0 0 0 0 0 0 CPU stop (for crash dump) interrupts
IPI4: 0 0 0 0 0 0 0 0 IRQ work interrupts
IPI5: 0 0 0 0 0 0 0 0 Timer broadcast interrupts
~ # dmesg | grep tty
[ 0.000000] Kernel command line: earlycon=sbi rdinit=/sbin/init console=ttyS0,115200 clk_ignore_unused
[ 1.411786] printk: legacy console [ttyS0] disabled
[ 1.419744] d4017000.uart: ttyS0 at MMIO 0xd4017000 (irq = 12, base_baud = 875000) is a XScale
[ 1.440171] printk: legacy console [ttyS0] enabled
~ # 
Great work, I was booting from Emmc so I did the DD command to blk2 which is my Emmc and everything works great!
RCMAN