From d784e50747b8cf0ce505489e1451f75be5ccbd4b Mon Sep 17 00:00:00 2001 From: Harald Welte Date: Sat, 9 Jan 2016 13:13:37 +0100 Subject: Introduce new phy_link and phy_instance abstraction This way we can model a flexible mapping between any number of PHYs, each having multiple instances, and then map BTSs with TRXx on top of those PHYs. --- doc/startup.txt | 42 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 42 insertions(+) create mode 100644 doc/startup.txt (limited to 'doc/startup.txt') diff --git a/doc/startup.txt b/doc/startup.txt new file mode 100644 index 00000000..cc643758 --- /dev/null +++ b/doc/startup.txt @@ -0,0 +1,42 @@ + +== start-up / sequencing during OsmoBTS start + +The start-up procedure of OsmoBTS can be described as follows: + +|=== +| bts-specific | main() | +| common | bts_main() | initialization of talloc contexts +| common | bts_log_init() | initialization of logging +| common | handle_options() | common option parsing +| bts-specific | bts_model_handle_options() | model-specific option parsing +| common | gsm_bts_alloc() | allocation of BTS/TRX/TS data structures +| common | vty_init() | Initialziation of VTY core, libosmo-abis and osmo-bts VTY +| common | main() | Setting of scheduler RR priority (if configured) +| common | main() | Initialization of GSMTAP (if configured) +| common | bts_init() | configuration of defaults in bts/trx/s object +| bts-specific | bts_model_init | ? +| common | abis_init() | Initialization of libosmo-abis +| common | vty_read_config_file() | Reading of configuration file +| bts-specific | bts_model_phy_link_set_defaults() | Called for every PHY link created +| bts-specific | bts_model_phy_instance_set_defaults() | Called for every PHY Instance created +| common | bts_controlif_setup() | Initialization of Control Interface +| bts-specific | bts_model_ctrl_cmds_install() +| common | telnet_init() | Initialization of telnet interface +| common | pcu_sock_init() | Initializaiton of PCU socket +| common | main() | Installation of signal handlers +| common | abis_open() | Start of the A-bis connection to BSC +| common | phy_links_open() | Iterate over list of configured PHY links +| bts-specific | bts_model_phy_link_open() | Open each of the configured PHY links +| common | write_pid_file() | Generate the pid file +| common | osmo_daemonize() | Fork as daemon in background (if configured) +| common | bts_main() | Run main loop until global variable quit >= 2 +| bts-specific | bts_model_oml_estab() | Called by core once OML link is established +| bts-specific | bts_model_check_oml() | called each time OML sets some attributes on a MO, checks if attributes are valid +| bts-specific | bts_model_apply_oml() | called each time OML sets some attributes on a MO, stores attribute contents in data structures +| bts-specific | bts_model_opstart() | for NM_OC_BTS, NM_OC_SITE_MANAGER, NM_OC_GPRS_NSE, NM_OC_GPRS_CELL, NMO_OC_GPRS_NSVC +| bts-specific | bts_model_opstart() | for NM_OC_RADIO_CARRIER for each trx +| bts-specific | bts_model_opstart() | for NM_OC_BASEB_TRANSC for each trx +| bts-specific | bts_model_opstart() | for NM_OC_CHANNEL for each timeslot on each trx +| bts-specific | bts_model_change_power() | change transmit power for each trx (power ramp-up/ramp-down + +| bts-specific | bts_model_abis_close() | called when either one of the RSL links or the OML link are down -- cgit v1.2.3