504c4aca3c
Make the counter silent by spawning another shell
2024-07-05 12:57:10 +02:00
48688594bf
Add a heartbeat counter to check the kernel
2024-07-05 12:45:32 +02:00
05898c5f85
Revert UART speed to 50MHz following vivado log
...
> UART Name g_UART IntfLabel m_axi_uart SyncClk {Label CLK0 Freq 50000000
> Name clk_i} BaseAddr 0x0 Number 2 AxiAddrWidth 0 AxiDataWidth 0 AxiIdWidth
> 0 AxiUserWidth 0 Mode normal IRQ uart_irq
2024-07-04 17:57:26 +02:00
7eeb16ecfb
Reduce frequency of UART clock to 25 MHz
2024-07-04 17:30:57 +02:00
d541462b4c
Stop in the stage 1 debug shell
2024-07-04 17:28:15 +02:00
9b37e2aed0
Use the hvc0 console for the kernel
2024-07-04 17:27:43 +02:00
eb7679f6a2
Prepare device tree to accomodate another UART
2024-07-04 17:22:43 +02:00
fcf4977a65
Extend the serial range from 0x100 to 0x1000
...
The AXI UART 16550 v2.0 from Xilinx only seem to require 32 bytes for
the registes, but let's reduce the changes with the original DTS.
2024-07-04 16:47:56 +02:00
d5b5cc3363
Change the order of interrupts-extended for PLIC
...
In the SiFive DTS they are in this order, not sure it that may cause any
difference.
2024-07-04 16:46:35 +02:00
471207c64a
Allow access to all memory from userspace
...
> If this option is disabled, you allow userspace (root) access to all
> of memory, including kernel and userspace memory
Currently is failing:
~ # cat /proc/iomem
40001000-400010ff : serial
60000000-7fffffff : Reserved
80000000-ffefffff : System RAM
80201000-81fa0b87 : Kernel image
80201000-80cb177f : Kernel code
81400000-819fffff : Kernel rodata
81c00000-81f18747 : Kernel data
81f19000-81fa0b87 : Kernel bss
100000000-1bfffffff : namespace0.0
~ # devmem 0x40001000
devmem: mmap: Operation not permitted
2024-07-04 12:45:41 +02:00
4826396962
Try enabling polling in the serial console
2024-07-04 11:39:35 +02:00
6531fd678c
WIP: Test M and S ext interrupt
2024-07-03 20:41:16 +02:00
b1755354d0
Add support for ftrace at boot time
2024-07-03 19:36:38 +02:00
427859818c
Disable SMP
...
The IPI extension is being used to multiplex IPI interruptions and we
don't need it as we only have one CPU.
2024-07-03 19:31:30 +02:00
4461686e80
Add dev shell without rootfs
...
Makes iteration quicker.
2024-07-03 18:52:51 +02:00
0c4311e15c
Remap interrupts to avoid 0 and duplicates
...
Let see if we can guess which is the correct number for the interrupts.
The plic should appear in the IRQ list but currently it doesn't.
2024-07-03 18:41:52 +02:00
30703d1715
Use the ttyS0 device for the console
...
For now it seems to be outputting the log properly, but it doesn't read
anything in the initrd input console.
2024-07-03 16:09:38 +02:00
a40414d08c
Add comment about the axi timer
...
This timer is present and initialized in OpenSBI and seems to drive the
UART device. Not sure if we need to see it from the kernel.
2024-07-03 15:30:28 +02:00
d7669671f6
Enable 8250 console driver
2024-07-03 14:09:52 +02:00
7c25f76f8b
Bake the git commit inside the uboot env file
2024-07-03 14:09:48 +02:00
2442bdf3f5
Disable lock torture test
2024-07-03 13:44:02 +02:00
93e83f52e8
Add busybox patch to see debug lines: initrd sh ok
...
The switch_root command seems to hang in the execv() syscall.
2024-07-03 13:43:41 +02:00
3229a3d194
Ignore misc directory
2024-07-03 13:10:06 +02:00
109dea5b4e
Enable kernel and busybox debug
...
Continues to hang in switch_root and no luck trying to send a magic
sysrq via serial port.
2024-07-01 18:00:54 +02:00
046f017b70
Move the pmem closer to the RAM memory
...
Continues stuck in switch_root.
2024-07-01 15:02:20 +02:00
917cbf3439
Revert to upstream busybox
2024-07-01 14:53:08 +02:00
65c7eca2c8
Fix OpenSBI configuration for newer versions
...
OpenSBI 1.3 an newer require the heap_size to be specified in the
sbi_platform structure, othewise the default 0 value causes a hangg at
the start. I found the problem after bisecting OpenSBI:
# Bisect opensbi
version = src.shortRev;
src = builtins.fetchGit {
url = "file:///home/Computational/rarias/riscv/opensbi";
#rev = "908be1b85c8ff0695ea226fbbf0ff24a779cdece"; #good
#rev = "6bc02dede86c47f87e65293b7099e9caf3b22c29"; #good
#rev = "bbff53fe3b6cdd3c9bc084d489640d7ee2a3f831"; #bad
#rev = "8b99a7f7d8294be29e18a667d51e13755ed2c0e0"; #good
#rev = "bdde2ecd27af1ac158669809f6658376fb5137ab"; #good
#rev = "5cf9a540164a018a31a679578a27eb964af0340d"; #good
#rev = "2a04f7037317c6c5b591b160a074c700de9b3378"; #bad
rev = "40d36a6673131e36075b1df78af4d7ab92e8cc01"; #bad
};
2024-07-01 13:28:32 +02:00
14f6528318
Use upstream u-boot and disable debug logs
2024-07-01 12:10:19 +02:00
67fedf4651
Remove unused dtb compilation in OpenSBI
2024-07-01 11:51:20 +02:00
869bd302a8
Find opensbi in any directory name
2024-07-01 11:47:33 +02:00
a7cc8e2611
Fix fpgactl wrong variable names
2024-07-01 11:47:16 +02:00
a7e1a6a100
Go back to default gcc for the kernel
2024-07-01 11:30:12 +02:00
763f053f01
Simplify, correct and comment DTS
...
Disable unused devices and try to fix the interrupt connections. The
compiler dtc doesn't report any warning now.
2024-07-01 11:29:02 +02:00
33b227f576
Hangs in swtich_root in stage1
2024-07-01 10:14:39 +02:00
975a1c0e87
Update fpga tools for MEEP
2024-07-01 09:57:05 +02:00
2cefcef63d
Make busybox static
...
Now the problem is inside the busybox binary:
[ 43.028000] Run /init as init process
[ 43.033300] with arguments:
[ 43.037260] /init
[ 43.040000] with environment:
[ 43.044180] HOME=/
[ 43.047600] TERM=linux
[ 43.078020] init[1]: unhandled signal 4 code 0x1 at 0x0000000000010660 in busybox[10000+22d000]
[ 43.090080] CPU: 0 PID: 1 Comm: init Not tainted 6.1.62 #1-NixOS
[ 43.097580] Hardware name: Barcelona Supercomputing Center - Lagarto Ox (NixOS) (DT)
[ 43.106480] epc : 0000000000010660 ra : 0000000000000000 sp : 0000003fd5489db0
[ 43.114780] gp : ffffffff8197ea48 tp : 0000000000000000 t0 : 0000000000000000
[ 43.123080] t1 : 0000000000000000 t2 : 0000000000000000 s0 : 0000000000000000
[ 43.131340] s1 : 0000000000000000 a0 : 0000000000000000 a1 : 0000000000000000
[ 43.139620] a2 : 0000000000000000 a3 : 0000000000000000 a4 : 0000000000000000
[ 43.147900] a5 : 0000000000000000 a6 : 0000000000000000 a7 : 0000000000000000
[ 43.156180] s2 : 0000000000000000 s3 : 0000000000000000 s4 : 0000000000000000
[ 43.164860] s5 : 0000000000000000 s6 : 0000000000000000 s7 : 0000000000000000
[ 43.173140] s8 : 0000000000000000 s9 : 0000000000000000 s10: 0000000000000000
[ 43.181420] s11: 0000000000000000 t3 : 0000000000000000 t4 : 0000000000000000
[ 43.189680] t5 : 0000000000000000 t6 : 0000000000000000
[ 43.196040] status: 0000000200004020 badaddr: 00000000034000ef cause: 0000000000000002
[ 43.208240] Kernel panic - not syncing: Attempted to kill init! exitcode=0x00000004
[ 43.216340] CPU: 0 PID: 1 Comm: init Not tainted 6.1.62 #1-NixOS
[ 43.222940] Hardware name: Barcelona Supercomputing Center - Lagarto Ox (NixOS) (DT)
[ 43.231100] Call Trace:
[ 43.234000] [<ffffffff800070c4>] dump_backtrace+0x38/0x48
[ 43.240140] [<ffffffff809f063c>] show_stack+0x50/0x68
[ 43.245900] [<ffffffff809fd1f8>] dump_stack_lvl+0x60/0x84
[ 43.252000] [<ffffffff809fd23c>] dump_stack+0x20/0x30
[ 43.257740] [<ffffffff809f0918>] panic+0x160/0x390
[ 43.263200] [<ffffffff80020184>] do_exit+0xa70/0xa78
[ 43.268820] [<ffffffff800203a4>] do_group_exit+0x44/0xb0
[ 43.274780] [<ffffffff80031eec>] get_signal+0x9b4/0xa00
[ 43.280700] [<ffffffff80005ca0>] do_work_pending+0x18c/0x610
[ 43.287020] [<ffffffff80003880>] resume_userspace_slow+0x10/0x14
[ 43.293960] ---[ end Kernel panic - not syncing: Attempted to kill init! exitcode=0x00000004 ]---
2024-06-28 15:08:53 +02:00
7b9eb7366e
Remove unused PMEM regions
...
Boots until the init, then fails with:
[ 42.561840] Freeing unused kernel image (initmem) memory: 2448K
[ 42.572360] Run /init as init process
[ 42.577400] with arguments:
[ 42.581780] /init
[ 42.584520] with environment:
[ 42.589320] HOME=/
[ 42.592140] TERM=linux
[ 42.637580] init[1]: unhandled signal 4 code 0x1 at 0x0000003f966980d8 in ld-linux-riscv64-lp64d.so.1[3f96683000+23000]
[ 42.650580] CPU: 0 PID: 1 Comm: init Not tainted 6.1.62 #1-NixOS
[ 42.657720] Hardware name: Barcelona Supercomputing Center - Lagarto Ox (NixOS) (DT)
[ 42.666760] epc : 0000003f966980d8 ra : 0000000000000000 sp : 0000003fe5c95db0
[ 42.675040] gp : ffffffff8197ea48 tp : 0000000000000000 t0 : 0000000000000000
[ 42.683320] t1 : 0000000000000000 t2 : 0000000000000000 s0 : 0000000000000000
[ 42.691600] s1 : 0000000000000000 a0 : 0000000000000000 a1 : 0000000000000000
[ 42.699880] a2 : 0000000000000000 a3 : 0000000000000000 a4 : 0000000000000000
[ 42.708160] a5 : 0000000000000000 a6 : 0000000000000000 a7 : 0000000000000000
[ 42.716420] s2 : 0000000000000000 s3 : 0000000000000000 s4 : 0000000000000000
[ 42.724700] s5 : 0000000000000000 s6 : 0000000000000000 s7 : 0000000000000000
[ 42.733380] s8 : 0000000000000000 s9 : 0000000000000000 s10: 0000000000000000
[ 42.741660] s11: 0000000000000000 t3 : 0000000000000000 t4 : 0000000000000000
[ 42.749920] t5 : 0000000000000000 t6 : 0000000000000000
[ 42.756440] status: 0000000200004020 badaddr: 0000000000010513 cause: 0000000000000002
[ 42.767620] Kernel panic - not syncing: Attempted to kill init! exitcode=0x00000004
[ 42.775720] CPU: 0 PID: 1 Comm: init Not tainted 6.1.62 #1-NixOS
[ 42.782320] Hardware name: Barcelona Supercomputing Center - Lagarto Ox (NixOS) (DT)
[ 42.790460] Call Trace:
[ 42.793380] [<ffffffff800070c4>] dump_backtrace+0x38/0x48
[ 42.799520] [<ffffffff809f063c>] show_stack+0x50/0x68
[ 42.805280] [<ffffffff809fd1f8>] dump_stack_lvl+0x60/0x84
[ 42.811400] [<ffffffff809fd23c>] dump_stack+0x20/0x30
[ 42.817140] [<ffffffff809f0918>] panic+0x160/0x390
[ 42.822620] [<ffffffff80020184>] do_exit+0xa70/0xa78
[ 42.828260] [<ffffffff800203a4>] do_group_exit+0x44/0xb0
[ 42.834240] [<ffffffff80031eec>] get_signal+0x9b4/0xa00
[ 42.840140] [<ffffffff80005ca0>] do_work_pending+0x18c/0x610
[ 42.846480] [<ffffffff80003880>] resume_userspace_slow+0x10/0x14
[ 42.853420] ---[ end Kernel panic - not syncing: Attempted to kill init! exitcode=0x00000004 ]---
2024-06-28 15:08:24 +02:00
fc4b8126f6
Document memory layout
2024-06-28 10:39:10 +02:00
a8f3234031
Reached working U-Boot prompt
...
The serial compatible string must be "ns16550" to be recognized by
U-Boot.
2024-06-27 17:58:21 +02:00
72b4788888
Reached U-Boot console with FDT parsing error
2024-06-27 16:08:30 +02:00
1bfc32e91a
Working OpenSBI 1.2
2024-06-27 11:29:15 +02:00
c8efa952f9
Add configuration for Lagarto Ox
2024-06-25 11:11:05 +02:00
4344f73d87
Dump system information when entering shell
2024-06-05 14:49:51 +02:00
8bd4550bc6
Use remote bscpkgs input for riscv benchmarks
2024-06-05 14:26:12 +02:00
f554a154b7
WIP
2024-05-28 18:12:14 +02:00
f69e04ccbe
WIP: Working spec cpu with clang epi
2024-05-13 18:59:00 +02:00
c4676535ec
Set Hart count to 20
2024-05-08 16:44:28 +02:00
0a771f0ccd
Add cpio commands to notes
2024-03-07 16:55:01 +01:00
bd0869dfc3
Update readme with uboot instructions
2024-03-07 16:52:28 +01:00
04705290c2
Add FPGA notes
2024-03-07 16:51:09 +01:00
