docs: ASCII typography and style normalization across all repo text
Replace every em dash with real punctuation (rewrites, not hyphen swaps) in docs, code comments, scripts, configs, and the port records; convert en dashes, curly quotes, ellipsis glyphs, arrows, and section signs to ASCII; drop machine-writing tell phrases from living docs. ADR titles now use a colon. The M2 bring-up DTS model string carried an em dash into the patch series and its record echoes; fixed at both, and the full series re-verified to apply cleanly onto pristine 6.18.46. One comment in freshness.h deliberately names the em dash glyph the UI renders as the unknown mark; that is data, kept as prose naming it. Verified: cargo tests (sim, config-lint, rs485-bridge), shellcheck, both driver MC/DC harnesses, patches-apply.
This commit is contained in:
BFE Engineering
@@ -3,39 +3,39 @@
|
||||
Booting the self-built 6.18 kernel on real hardware (warden-c8a3), 2026-08-24.
|
||||
The build side (zImage + dtb) is in `../rv1106-enablement/`; this is the on-target
|
||||
half. **The safe-test framework and the boot-image format below are the reusable
|
||||
findings — they worked on the first hardware try.**
|
||||
findings: they worked on the first hardware try.**
|
||||
|
||||
## The safe test path (A/B slot _b, never touch _a)
|
||||
|
||||
c8a3 is the desk-connected bench Warden: reachable over its USB-gadget ethernet
|
||||
(dev-build dropbear; address and bench credentials live in the private
|
||||
deployment notes — use `scp -O`, no sftp-server), plus the serial console at
|
||||
deployment notes: use `scp -O`, no sftp-server), plus the serial console at
|
||||
115200 and remotely switchable power. It runs an A/B
|
||||
firmware (boot_a=mmcblk0p5 / boot_b=mmcblk0p6, 32 MiB each; rootfs_a/_b; AvbABData
|
||||
in `misc` sector 4 / byte 2048).
|
||||
|
||||
The test never risks the working system:
|
||||
1. Back up `boot_b` (`dd .../by-name/boot_b -> /userdata/boot_b.bak`).
|
||||
2. Write the test `boot.img` to **boot_b only** — `_a` (the shipped WardenOS) is
|
||||
2. Write the test `boot.img` to **boot_b only**. `_a` (the shipped WardenOS) is
|
||||
untouched.
|
||||
3. Flip AvbABData to a **one-shot _b**: `craft_ab.py 14 0 1 15 1 0 1` → A(prio14,
|
||||
3. Flip AvbABData to a **one-shot _b**: `craft_ab.py 14 0 1 15 1 0 1` -> A(prio14,
|
||||
tries0,ok1) B(prio15,tries1,ok0); write to `misc` sector 4. U-Boot's SPL then
|
||||
picks _b once, decrements tries→0, and boots it.
|
||||
picks _b once, decrements tries->0, and boots it.
|
||||
4. If the test kernel fails/hangs, U-Boot auto-reverts to `_a` (SPL: "slot boot
|
||||
failed, resetting" → next boot `A/B-slot: _a, successful: 1`). A hung kernel
|
||||
failed, resetting" -> next boot `A/B-slot: _a, successful: 1`). A hung kernel
|
||||
just needs a Zigbee power-cycle; `_a` boots WardenOS back. **Zero manual
|
||||
recovery needed — verified across three failed attempts.**
|
||||
recovery needed: verified across three failed attempts.**
|
||||
|
||||
`earlycon=uart8250,mmio32,0xff4c0000` is confirmed correct: it is in the live
|
||||
5.10 cmdline, and U-Boot's own DDR probe reports `Adding bank: 0x0 - 0x10000000`
|
||||
(256 MiB) — so the M2 DT's memory node and earlycon are right.
|
||||
(256 MiB), so the M2 DT's memory node and earlycon are right.
|
||||
|
||||
## The boot-image format (this was the whole fight)
|
||||
|
||||
rockchip U-Boot (this build) needs a very specific `boot.img`, NOT a plain FIT:
|
||||
|
||||
- **External-data FIT.** `mkimage -f its -E -p 0x800`. The FDT metadata stays tiny
|
||||
(totalsize ≈ 1536 B, matching boot_a); the kernel/fdt/resource **data is
|
||||
(totalsize ~ 1536 B, matching boot_a); the kernel/fdt/resource **data is
|
||||
appended** after it. A normal embedded-data FIT (totalsize = whole image) is
|
||||
rejected with `FIT: No fit blob` / `No FIT image`.
|
||||
- **A `resource` (multi) sub-image is mandatory.** rockchip reads the DTB via the
|
||||
@@ -43,62 +43,62 @@ rockchip U-Boot (this build) needs a very specific `boot.img`, NOT a plain FIT:
|
||||
with `resource_tool --pack`. Without it: `Failed to load DTB, ret=-19`.
|
||||
- **Sysmem sentinel load addresses.** fdt `load=0xffffff00`, kernel
|
||||
`load=entry=0xffffff01`; U-Boot's sysmem places them (it chose kernel@0x8000,
|
||||
fdt@0xc00000). Real low addresses collided → "No fit blob".
|
||||
fdt@0xc00000). Real low addresses collided -> "No fit blob".
|
||||
- `CONFIG_FIT_SIGNATURE` is **off** in this U-Boot, so the image need not be
|
||||
signed. Template: `sdk/sysdrv/source/kernel/boot.its`; builder recipe:
|
||||
`sdk/project/scripts/mk-fitimage.sh` (`mkimage -E -p 0x800`).
|
||||
|
||||
With the correct format, U-Boot loaded my kernel + my DTB and printed my DT model
|
||||
string (`Model: WardenOS 86-Panel (RV1106) — M2 earlycon bring-up`), then
|
||||
string (`Model: WardenOS 86-Panel (RV1106), M2 earlycon bring-up`), then
|
||||
`Starting kernel ...`.
|
||||
|
||||
## Result: [x] M2 achieved — the 6.18 kernel boots on hardware
|
||||
## Result: [x] M2 achieved, the 6.18 kernel boots on hardware
|
||||
|
||||
Six attempts, each auto-recovering to `_a`, then a clean boot:
|
||||
|
||||
```
|
||||
[0.000000] Linux version 6.18.46 … #2 SMP
|
||||
[0.000000] Linux version 6.18.46 ... #2 SMP
|
||||
[0.000000] CPU: ARMv7 Processor [410fc075]
|
||||
[0.000000] OF: fdt: Machine model: WardenOS 86-Panel (RV1106) — M2 earlycon bring-up
|
||||
[0.000000] OF: fdt: Machine model: WardenOS 86-Panel (RV1106), M2 earlycon bring-up
|
||||
[0.000000] earlycon: uart8250 at MMIO32 0xff4c0000
|
||||
[0.000000] cma: Reserved 64 MiB at 0x0c000000
|
||||
[0.040693] Calibrating delay loop … 48.00 BogoMIPS ← arch timer up
|
||||
[0.040693] Calibrating delay loop ... 48.00 BogoMIPS <- arch timer up
|
||||
[0.343810] pinctrl core: initialized pinctrl subsystem
|
||||
[1.968703] ff4c0000.serial: ttyS2 … is a 16550A ← 8250 on our CRU clock
|
||||
[1.968703] ff4c0000.serial: ttyS2 ... is a 16550A <- 8250 on our CRU clock
|
||||
```
|
||||
|
||||
Two more bugs, found via the DEBUG_LL rebuild (`DEBUG_LL_UART_8250`, PHYS
|
||||
0xff4c0000, shift 2, 32-bit word + `earlyprintk` — the decompressor prints
|
||||
0xff4c0000, shift 2, 32-bit word + `earlyprintk`, the decompressor prints
|
||||
pre-MMU), then fixed:
|
||||
|
||||
- **DTB overrun → `r2=0` / `invalid dtb`.** The multi_v7 zImage decompresses to
|
||||
- **DTB overrun -> `r2=0` / `invalid dtb`.** The multi_v7 zImage decompresses to
|
||||
~20 MiB from 0x8000, overrunning the DTB at 0xc00000, so the decompressor handed
|
||||
the kernel a null DTB pointer. Fix: place the fdt high — `load=0x08000000` in the
|
||||
the kernel a null DTB pointer. Fix: place the fdt high (`load=0x08000000`) in the
|
||||
FIT `.its` (see `boot5.its`). The real fix is a lean defconfig; multi_v7 is bloat.
|
||||
- **`grf_ctx` NULL deref in clk-rv1106.** `rockchip_clk_register_branches(grf_ctx,…)`
|
||||
- **`grf_ctx` NULL deref in clk-rv1106.** `rockchip_clk_register_branches(grf_ctx,...)`
|
||||
crashed because the minimal DT had no `rockchip,rv1106-grf-cru` node to set
|
||||
`grf_ctx`. Fix: add the `grf-clock-controller` child to the grf syscon (now in
|
||||
`dts/rv1106-warden-m2.dts`).
|
||||
|
||||
**Console baud gotcha:** `console=ttyS2,115200`. earlycon is readable at 115200
|
||||
(U-Boot leaves uart2 there), but the vendor's 1.5M console rate is garbage on the
|
||||
CP2102 bench adapter — so the M2 DT pins 115200 for readable bring-up; production
|
||||
CP2102 bench adapter, so the M2 DT pins 115200 for readable bring-up; production
|
||||
overrides to 1.5M.
|
||||
|
||||
## M3 (same session): [x] the full WardenOS runs on the 6.18 kernel
|
||||
|
||||
Adding the eMMC `dw_mmc` node (`mmc@ffa90000`, clocks from cru + grf_cru) was the
|
||||
only change M3 needed — the mmc/ext4 drivers are already in-config. The kernel
|
||||
only change M3 needed: the mmc/ext4 drivers are already in-config. The kernel
|
||||
enumerated the eMMC at HS200, mounted the ext4 rootfs, ran `/sbin/init`, and
|
||||
started every WardenOS daemon. A serial root login confirms `uname -a` →
|
||||
started every WardenOS daemon. A serial root login confirms `uname -a` ->
|
||||
`Linux warden-c8a3 6.18.46 armv7l`, with `warden-flared/-modbus/-mikrotik/-asic/
|
||||
-ui/-flight` all running. Expected M4/M5 gaps show cleanly: the 5.10 aic8800 `.ko`
|
||||
won't load (vermagic → M5), and there's no backlight/framebuffer yet (→ M4).
|
||||
won't load (vermagic -> M5), and there's no backlight/framebuffer yet (-> M4).
|
||||
|
||||
**Console lesson applied:** with `console=ttyS2,115200` the whole boot is readable
|
||||
on the CP2102 (the 1.5M vendor rate is garbage on it). Serial login uses the same
|
||||
`c8a3_run.py` helper (dev-build bench credentials, see private deployment notes)
|
||||
as the 5.10 firmware — the userspace is unchanged.
|
||||
as the 5.10 firmware: the userspace is unchanged.
|
||||
|
||||
Next: M4 (VOP2 display + panel + touch), M5 (AIC8800 SDIO port + our 4 patches),
|
||||
M6 (RGA/watchdog/HPMCU/USB-OTG); plus a lean defconfig + Buildroot-on-6.18 cleanup.
|
||||
|
||||
Reference in New Issue
Block a user