Remove reserved region hack
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JOURNAL.md
200
JOURNAL.md
@ -1870,3 +1870,203 @@ However, now I cannot boot the kernel, as it is overwritting the FDT:
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Could not find a valid device tree
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Could not find a valid device tree
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Let's move the FDT to 0x80100000.
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Let's move the FDT to 0x80100000.
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Now I can load the kernel, but it gets stuck in the middle of the boot:
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GGGGGGGGG
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OpenSBI v1.5
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____ _____ ____ _____
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/ __ \ / ____| _ \_ _|
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| | | |_ __ ___ _ __ | (___ | |_) || |
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| | | | '_ \ / _ \ '_ \ \___ \| _ < | |
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| |__| | |_) | __/ | | |____) | |_) || |_
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\____/| .__/ \___|_| |_|_____/|____/_____|
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sbi_timer_init: begins
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sbi_timer_init: got Zicntr extension
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fdt_timer_cold_init: pos = 0
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fdt_timer_cold_init: got match, name = riscv,aclint-mtimer
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fdt_timer_cold_init: enabled
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timer_mtimer_cold_init: begins, is_clint = 0
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timer_mtimer_cold_init: mtime_addr = 0x40002000
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timer_mtimer_cold_init: mtime_size = 0x00000008
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timer_mtimer_cold_init: mtimecmp_addr = 0x40002008
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timer_mtimer_cold_init: mtimecmp_size = 0x00000008
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fdt_timer_cold_init: drc->cold_init = 0
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fdt_timer_cold_init: pos = 1
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fdt_timer_cold_init: returns 0
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Platform Name : Barcelona Supercomputing Center - Lagarto Ox (NixOS)
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Platform Features : medeleg
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Platform HART Count : 1
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Platform IPI Device : ---
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Platform Timer Device : aclint-mtimer @ 50000Hz
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Platform Console Device : uart8250
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Platform HSM Device : ---
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Platform PMU Device : ---
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Platform Reboot Device : ---
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Platform Shutdown Device : ---
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Platform Suspend Device : ---
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Platform CPPC Device : ---
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Firmware Base : 0x80000000
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Firmware Size : 327 KB
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Firmware RW Offset : 0x40000
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Firmware RW Size : 71 KB
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Firmware Heap Offset : 0x49000
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Firmware Heap Size : 35 KB (total), 2 KB (reserved), 11 KB (used), 21 KB (free)
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Firmware Scratch Size : 4096 B (total), 408 B (used), 3688 B (free)
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Runtime SBI Version : 2.0
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Domain0 Name : root
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Domain0 Boot HART : 0
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Domain0 HARTs : 0*
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Domain0 Region00 : 0x0000000040002000-0x000000004000200f M: (I,R,W) S/U: ()
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Domain0 Region01 : 0x0000000040001000-0x0000000040001fff M: (I,R,W) S/U: (R,W)
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Domain0 Region02 : 0x0000000080040000-0x000000008005ffff M: (R,W) S/U: ()
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Domain0 Region03 : 0x0000000080000000-0x000000008003ffff M: (R,X) S/U: ()
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Domain0 Region04 : 0x0000000040800000-0x0000000040bfffff M: (I,R,W) S/U: (R,W)
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Domain0 Region05 : 0x0000000000000000-0xffffffffffffffff M: () S/U: (R,W,X)
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Domain0 Next Address : 0x0000000080200000
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Domain0 Next Arg1 : 0x0000000080100000
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Domain0 Next Mode : S-mode
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Domain0 SysReset : yes
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Domain0 SysSuspend : yes
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Boot HART ID : 0
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Boot HART Domain : root
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Boot HART Priv Version : v1.10
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Boot HART Base ISA : rv64imafdc
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Boot HART ISA Extensions : zicntr,zihpm,sdtrig
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Boot HART PMP Count : 0
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Boot HART PMP Granularity : 0 bits
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Boot HART PMP Address Bits: 0
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Boot HART MHPM Info : 29 (0xfffffff8)
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Boot HART Debug Triggers : 0 triggers
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Boot HART MIDELEG : 0x0000000000000222
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Boot HART MEDELEG : 0x000000000000b109
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<debug_uart>
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Core: 12 devices, 8 uclasses, devicetree: board
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Loading Environment from nowhere... OK
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In: serial,usbkbd
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Out: serial,vidconsole
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Err: serial,vidconsole
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No working controllers found
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Net: No ethernet found.
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Working FDT set to 80100000
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Hit any key to stop autoboot: 0
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Device 0: unknown device
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Device 1: unknown device
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scanning bus for devices...
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Device 0: unknown device
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starting USB...
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No working controllers found
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No ethernet found.
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No ethernet found.
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=> setenv bootargs "root=/dev/ram0 loglevel=7 debug rw earlycon=sbi console=hvc0"
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=> setenv ramdisk_size 12614846
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=> booti ${kernel_addr_r} ${ramdisk_addr_r}:${ramdisk_size} ${fdtcontroladdr}
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Moving Image from 0x84000000 to 0x80200000, end=83044650
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## Flattened Device Tree blob at 80100000
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Booting using the fdt blob at 0x80100000
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Working FDT set to 80100000
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ERROR: reserving fdt memory region failed (addr=80000000 size=4000000 flags=4)
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Using Device Tree in place at 0000000080100000, end 0000000080103dd0
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Working FDT set to 80100000
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Starting kernel ...
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[ 0.000000] Linux version 6.9.7 (nixbld@localhost) (riscv64-unknown-linux-gnu-gcc (GCC) 13.3.0, GNU ld (GNU Binutils) 2.41) #1-NixOS Thu Jun 27 11:52:32 UTC 2024
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[ 0.000000] Machine model: Barcelona Supercomputing Center - Lagarto Ox (NixOS)
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[ 0.000000] SBI specification v2.0 detected
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[ 0.000000] SBI implementation ID=0x1 Version=0x10005
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[ 0.000000] SBI TIME extension detected
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[ 0.000000] SBI IPI extension detected
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[ 0.000000] SBI RFENCE extension detected
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[ 0.000000] SBI DBCN extension detected
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[ 0.000000] earlycon: sbi0 at I/O port 0x0 (options '')
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[ 0.000000] printk: legacy bootconsole [sbi0] enabled
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[ 0.000000] OF: reserved mem: Reserved memory: failed to reserve memory for node 'reserved@80000000': base 0x0000000080000000, size 64 MiB
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[ 0.000000] OF: reserved mem: OVERLAP DETECTED!
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[ 0.000000] mmode_resv1@80000000 (0x0000000080000000--0x0000000080040000) overlaps with reserved@80000000 (0x0000000080000000--0x0000000084000000)
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[ 0.000000] OF: reserved mem: OVERLAP DETECTED!
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[ 0.000000] reserved@80000000 (0x0000000080000000--0x0000000084000000) overlaps with mmode_resv0@80040000 (0x0000000080040000--0x0000000080060000)
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[ 0.000000] Reserved memory: created DMA memory pool at 0x0000000060000000, size 256 MiB
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[ 0.000000] OF: reserved mem: initialized node dma_pool@60000000, compatible id shared-dma-pool
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[ 0.000000] OF: reserved mem: 0x0000000060000000..0x000000006fffffff (262144 KiB) map non-reusable dma_pool@60000000
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[ 0.000000] Reserved memory: created DMA memory pool at 0x0000000070000000, size 256 MiB
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[ 0.000000] OF: reserved mem: initialized node dma_pool@70000000, compatible id shared-dma-pool
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[ 0.000000] OF: reserved mem: 0x0000000070000000..0x000000007fffffff (262144 KiB) map non-reusable dma_pool@70000000
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[ 0.000000] OF: reserved mem: 0x0000000080000000..0x000000008003ffff (256 KiB) nomap non-reusable mmode_resv1@80000000
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[ 0.000000] OF: reserved mem: 0x0000000080000000..0x0000000083ffffff (65536 KiB) nomap non-reusable reserved@80000000
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[ 0.000000] OF: reserved mem: 0x0000000080040000..0x000000008005ffff (128 KiB) nomap non-reusable mmode_resv0@80040000
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[ 0.000000] cma: Reserved 16 MiB at 0x00000000af000000 on node -1
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[ 0.000000] Zone ranges:
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[ 0.000000] DMA32 [mem 0x0000000080000000-0x00000000afffffff]
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[ 0.000000] Normal empty
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[ 0.000000] Movable zone start for each node
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[ 0.000000] Early memory node ranges
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[ 0.000000] node 0: [mem 0x0000000080000000-0x000000008005ffff]
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[ 0.000000] node 0: [mem 0x0000000080060000-0x00000000afffffff]
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[ 0.000000] Initmem setup node 0 [mem 0x0000000080000000-0x00000000afffffff]
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[ 0.000000] Falling back to deprecated "riscv,isa"
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[ 0.000000] riscv: base ISA extensions adfim
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[ 0.000000] riscv: ELF capabilities adfim
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[ 0.000000] pcpu-alloc: s0 r0 d131072 u131072 alloc=1*131072
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[ 0.000000] pcpu-alloc: [0] 0
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[ 0.000000] Kernel command line: root=/dev/ram0 loglevel=7 debug rw earlycon=sbi console=hvc0
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[ 0.000000] Dentry cache hash table entries: 131072 (order: 8, 1048576 bytes, linear)
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[ 0.000000] Inode-cache hash table entries: 65536 (order: 7, 524288 bytes, linear)
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[ 0.000000] Built 1 zonelists, mobility grouping on. Total pages: 193536
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[ 0.000000] mem auto-init: stack:all(zero), heap alloc:off, heap free:off
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[ 0.000000] Virtual kernel memory layout:
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[ 0.000000] fixmap : 0xffffffc6fea00000 - 0xffffffc6ff000000 (6144 kB)
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[ 0.000000] pci io : 0xffffffc6ff000000 - 0xffffffc700000000 ( 16 MB)
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[ 0.000000] vmemmap : 0xffffffc700000000 - 0xffffffc800000000 (4096 MB)
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[ 0.000000] vmalloc : 0xffffffc800000000 - 0xffffffd800000000 ( 64 GB)
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[ 0.000000] modules : 0xffffffff02e45000 - 0xffffffff80000000 (2001 MB)
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[ 0.000000] lowmem : 0xffffffd800000000 - 0xffffffd830000000 ( 768 MB)
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[ 0.000000] kernel : 0xffffffff80000000 - 0xffffffffffffffff (2047 MB)
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[ 0.000000] Memory: 386632K/786432K available (17075K kernel code, 9047K rwdata, 10240K rodata, 8737K init, 917K bss, 383416K reserved, 16384K cma-reserved)
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[ 0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
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[ 0.000000] ftrace: allocating 46961 entries in 184 pages
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[ 0.000000] ftrace: allocated 184 pages with 4 groups
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[ 0.000000] trace event string verifier disabled
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[ 0.000000] RCU Tasks Rude: Setting shift to 0 and lim to 1 rcu_task_cb_adjust=1.
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[ 0.000000] RCU Tasks Trace: Setting shift to 0 and lim to 1 rcu_task_cb_adjust=1.
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[ 0.000000] NR_IRQS: 64, nr_irqs: 64, preallocated irqs: 0
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[ 0.000000] riscv-intc: 64 local interrupts mapped
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[ 0.000000] clocksource: riscv_clocksource: mask: 0xffffffffffffffff max_cycles: 0x179dd7f66, max_idle_ns: 56421785867800 ns
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[ 0.000020] sched_clock: 64 bits at 50kHz, resolution 20000ns, wraps every 70368744170000ns
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[ 0.015020] kfence: initialized - using 2097152 bytes for 255 objects at 0x(____ptrval____)-0x(____ptrval____)
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[ 0.035900] Console: colour dummy device 80x25
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[ 0.041720] Calibrating delay loop (skipped), value calculated using timer frequency.. 0.10 BogoMIPS (lpj=200)
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[ 0.052480] pid_max: default: 32768 minimum: 301
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[ 0.187380] LSM: initializing lsm=capability,landlock,yama
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[ 0.479640] landlock: Up and running.
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[ 0.483700] Yama: becoming mindful.
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[ 0.521600] Mount-cache hash table entries: 2048 (order: 2, 16384 bytes, linear)
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[ 0.529780] Mountpoint-cache hash table entries: 2048 (order: 2, 16384 bytes, linear)
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[ 0.784220] riscv: ELF compat mode unsupported
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[ 0.784600] ASID allocator disabled (0 bits)
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[ 0.867620] devtmpfs: initialized
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[ 0.986340] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 7645041785100000 ns
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[ 0.996900] futex hash table entries: 256 (order: 1, 12288 bytes, linear)
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[ 1.084560] pinctrl core: initialized pinctrl subsystem
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[ 1.195460] NET: Registered PF_NETLINK/PF_ROUTE protocol family
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[ 1.244960] DMA: preallocated 128 KiB GFP_KERNEL pool for atomic allocations
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[ 1.255960] DMA: preallocated 128 KiB GFP_KERNEL|GFP_DMA32 pool for atomic allocations
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[ 1.266500] audit: initializing netlink subsys (disabled)
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[ 1.317920] thermal_sys: Registered thermal governor 'step_wise'
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[ 1.319800] cpuidle: using governor ladder
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This is very interesting, because all these lockups show the same symptoms and
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they may be related with the kernel trying to access an area of memory that it
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shouldn't.
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First, let's remove the reserved region, as now OpenSBI properly forwards the
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regions to the kernel.
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@ -84,10 +84,6 @@
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#address-cells = <2>; /* Starting address and size */
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#address-cells = <2>; /* Starting address and size */
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#size-cells = <2>; /* 64 bits memory addresses */
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#size-cells = <2>; /* 64 bits memory addresses */
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ranges;
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ranges;
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reserved@80000000 {
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reg = <0x0 0x80000000 0x0 0x04000000>;
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no-map;
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};
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eth_pool: dma_pool@60000000 {
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eth_pool: dma_pool@60000000 {
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reg = <0x0 0x60000000 0x0 0x10000000>;
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reg = <0x0 0x60000000 0x0 0x10000000>;
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compatible = "shared-dma-pool";
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compatible = "shared-dma-pool";
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