wl1_country_code=US changed to Q2 after reboot

[mike7]

Playing with wireless power settings on RT-N66U, I found, some nvram settings reverted after boot.
So if you set wl1_country_code=US, it will change to Q2.

Looks like ASUS set particular values in init-broadcom.c, starting line 1541:

...	else
{
if (nvram_match(strcat_r(prefix, "nband", tmp), "2"))	// 2.4G
{
if (nvram_match(strcat_r(prefix, "country_code", tmp), "US"))
{
if (!nvram_match(strcat_r(prefix2, "regrev", tmp2), "39"))
{
nvram_set(strcat_r(prefix, "country_rev", tmp), "39");
nvram_set(strcat_r(prefix2, "regrev", tmp2), "39");
commit_needed++;
}
}
else if (nvram_match(strcat_r(prefix, "country_code", tmp), "EU"))
{
if (!nvram_match(strcat_r(prefix2, "regrev", tmp2), "3"))
{
nvram_set(strcat_r(prefix, "country_rev", tmp), "3");
nvram_set(strcat_r(prefix2, "regrev", tmp2), "3");
commit_needed++;
}
}
else if (nvram_match(strcat_r(prefix, "country_code", tmp), "JP"))
{
if (!nvram_match(strcat_r(prefix2, "regrev", tmp2), "13"))
{
nvram_set(strcat_r(prefix, "country_rev", tmp), "13");
nvram_set(strcat_r(prefix2, "regrev", tmp2), "13");
commit_needed++;
}
}
}
else	// 5G
{
if (nvram_match(strcat_r(prefix, "country_code", tmp), "US"))
{
nvram_set("regulation_domain_5G", "Q2");
nvram_set(strcat_r(prefix, "country_code", tmp), "Q2");
nvram_set(strcat_r(prefix2, "ccode", tmp2), "Q2");
nvram_set(strcat_r(prefix, "country_rev", tmp), "2");
nvram_set(strcat_r(prefix2, "regrev", tmp2), "2");
commit_needed++;
}
else if (nvram_match(strcat_r(prefix, "country_code", tmp), "Q2"))
{
if (!nvram_match(strcat_r(prefix2, "regrev", tmp2), "2"))
{
nvram_set(strcat_r(prefix, "country_rev", tmp), "2");
nvram_set(strcat_r(prefix2, "regrev", tmp2), "2");
commit_needed++;
}
}
else if (nvram_match(strcat_r(prefix, "country_code", tmp), "EU"))
{
if (!nvram_match(strcat_r(prefix2, "regrev", tmp2), "0"))
{
nvram_set(strcat_r(prefix, "country_rev", tmp), "0");
nvram_set(strcat_r(prefix2, "regrev", tmp2), "0");
commit_needed++;
}
}
else if (nvram_match(strcat_r(prefix, "country_code", tmp), "TW"))
{
if (!nvram_match(strcat_r(prefix2, "regrev", tmp2), "0"))
{
nvram_set(strcat_r(prefix, "country_rev", tmp), "0");
nvram_set(strcat_r(prefix2, "regrev", tmp2), "0");
commit_needed++;
}
}
else if (nvram_match(strcat_r(prefix, "country_code", tmp), "CN"))
{
if (!nvram_match(strcat_r(prefix2, "regrev", tmp2), "0"))
{
nvram_set(strcat_r(prefix, "country_rev", tmp), "0");
nvram_set(strcat_r(prefix2, "regrev", tmp2), "0");
commit_needed++;
}
}
else if (nvram_match(strcat_r(prefix, "country_code", tmp), "JP"))
{
if (!nvram_match(strcat_r(prefix2, "regrev", tmp2), "13"))
{
nvram_set(strcat_r(prefix, "country_rev", tmp), "13");
nvram_set(strcat_r(prefix2, "regrev", tmp2), "13");
commit_needed++;
}
}
}
}

as I understand actual power settings depend on regrev settings.