5f90528b51
Add bootrom support
2024-07-08 18:11:11 +02:00
66ec07a0cb
Switch to two uarts bitstream
2024-07-08 13:48:20 +02:00
1f0ac64631
Add bitstream to Nix
2024-07-08 13:46:37 +02:00
4d246ad00e
Enable secondary serial console
2024-07-08 10:44:51 +02:00
4641e0d9a0
Document hang missing hvc_remove trace point
2024-07-08 10:41:50 +02:00
6721e1e22c
Revert "Try to use openpiton based OpenSBI config"
...
This reverts commit 931244a355
2024-07-08 10:03:48 +02:00
1b4ab09c16
Select the second FPGA by default
2024-07-08 09:55:13 +02:00
931244a355
Try to use openpiton based OpenSBI config
...
The seem to be doing PLIC initialization based on the device tree, which
may be relevant as that is where we are defining the interruptions.
2024-07-08 09:49:34 +02:00
87b4c91813
Dump stack trace on hvc_remove
2024-07-08 08:55:50 +02:00
aaca0bb2e6
Reached stage2!
2024-07-08 08:49:21 +02:00
ef7a100c3f
Disable secondary console
2024-07-08 08:49:12 +02:00
6155c7e3f8
Try to fill cache details
2024-07-08 08:48:56 +02:00
a7c460b034
Use headings to allow hrefs
2024-07-05 17:05:28 +02:00
540780e508
Remove rvb dependency for now to avoid clang
2024-07-05 16:54:14 +02:00
d52691ca33
Add journal to the repository
2024-07-05 16:53:07 +02:00
254d1bd82b
flake.lock: Update
...
Flake lock file updates:
• Updated input 'nixpkgs':
'github:NixOS/nixpkgs/e4ad989506ec7d71f7302cc3067abd82730a4beb' (2023-11-19)
→ 'github:NixOS/nixpkgs/9f4128e00b0ae8ec65918efeba59db998750ead6' (2024-07-03)
2024-07-05 16:31:08 +02:00
b49471ba50
Update nixpkgs to nixos-unstable
2024-07-05 16:30:29 +02:00
b903eae7e5
Disable ftrace for now as it hangs the boot
2024-07-05 16:24:51 +02:00
7e6fdff142
Disable proactive compation
...
I see a lot of kcompactd0 entries in sched_switch log, so disable it for
now.
2024-07-05 15:57:18 +02:00
32f4d117db
Only enable sched_switch events
...
As sched_stat_runtime is flooding the console.
2024-07-05 15:37:50 +02:00
bc05dc2676
Mount debugfs first
2024-07-05 15:36:42 +02:00
934b67ac0b
Trace sched events from stage1
...
Events from the kthread that dumps the buffer to the console are
filtered, otherwise we make an infinite loop.
2024-07-05 15:36:42 +02:00
f509a0a517
Enable ftrace at boot
...
For now we only show init calls.
2024-07-05 15:36:37 +02:00
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
