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"
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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
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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
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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
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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
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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
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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
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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
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> 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
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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
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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
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> 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
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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
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Makes iteration quicker.
2024-07-03 18:52:51 +02:00
0c4311e15c
Remap interrupts to avoid 0 and duplicates
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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
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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
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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
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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
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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
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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
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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
