SIM800 board fails to link: undefined symbol platform_sim800_init

[psxbox]

Summary

Building any project with board = sim800 fails at the link step with:

undefined symbol `platform_sim800_init' referenced in expression
collect2.exe: error: ld returned 1 exit status

Root cause

boards/sim800.json sets "variant": "sim800", and the logicromsdk build script adds:

-Wl,--defsym,platform_init=platform_%s_init  ->  platform_init=platform_sim800_init

But the compiled MT6261 SDK library (framework-logicromsdk v1.2.0, lib/mtk/liblogicrom.a) does not export a platform_sim800_init symbol. Checked with arm-none-eabi-nm, the only platform_*_init symbols present are:

platform_m56_init
platform_m66_init
platform_mc20_init
platform_mc20u_init
platform_mc60_init
platform_sim868_init

platform_sim800_init is not one of them. I also checked the logicromsdk release history — SIM868 support was added explicitly in v0.7.1, but SIM800 is never mentioned in any release notes, even though boards/sim800.json has existed in this repo claiming support for it.

Environment

• platform-logicrom 1.1.0
• framework-logicromsdk 1.2.0
• toolchain-gccarmnoneeabi 1.80201.181220 (8.2.1)
• Windows 11

Workaround

Since SIMCom SIM800 and Quectel M66 share the same MCU (MT6261) and the same peripheral/connectivity profile (cellular + bluetooth, no GPS), pointing sim800's variant at "m66" (reusing platform_m66_init) resolves the link error and produces a working firmware image. It would be great to get an official platform_sim800_init (or a documented statement that m66's init is intended to be shared with SIM800) so users don't have to rely on an unverified stand-in.

Suggested fix

Either:

1. Add a compiled platform_sim800_init to the MT6261 SDK library, or
2. Change boards/sim800.json's "variant" to "m66" (or whichever init is confirmed correct for SIM800 hardware) until (1) lands.