A320 Captain reported receiving a low altitude warning from ATC while attempting to capture the glideslope on the approach.

Narrative

On the descent on the OAKES Arrival; NorCal Approach insisted we keep our speed up; cleared us direct FFIST on the arrival approximately over OAKES waypoint. Speed assigned by NorCal was 210 kt. from OAKES to 10 KM from OAK. Over FFIST we were cleared direct MITOE intersection and asked if we had runway in sight; which we did. We were cleared visual over FFIST. I initiated a descent to 2;000 to meet MITOE crossing restriction and intercept LOC and glideslope. There's some peaks just southeast of the airport on the ILS 30 approach chart we came slightly closer than comfort to. I initiated a gentile climb as to keep clearance from the terrain; perhaps 300+ V/S. When clear of terrain it was clear we were slightly above profile at intercept; just inside MITOE. I initiated the capture glideslope from above technique per our training; but the resulting V/S down produced an amber indication. I corrected immediately; and the approach was stable from 1;000 ft. AGL.I received a Low Altitude Warning" from Tower; which was perplexing considering I was above the profile the whole time on approach; but perhaps 8 - 10 nautical miles earlier I was encroaching terrain; which we corrected for. The landing was without event. I queried Tower on the ground and they said they issued that because they got an alert but didn't explain as to why they got the alert."