diff options
Diffstat (limited to 'firmware/usrp3/n230/n230_init.c')
| -rw-r--r-- | firmware/usrp3/n230/n230_init.c | 125 |
1 files changed, 125 insertions, 0 deletions
diff --git a/firmware/usrp3/n230/n230_init.c b/firmware/usrp3/n230/n230_init.c new file mode 100644 index 000000000..14f5ebd77 --- /dev/null +++ b/firmware/usrp3/n230/n230_init.c @@ -0,0 +1,125 @@ +// +// Copyright 2014 Ettus Research LLC +// +// This program is free software: you can redistribute it and/or modify +// it under the terms of the GNU General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// This program is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU General Public License for more details. +// +// You should have received a copy of the GNU General Public License +// along with this program. If not, see <http://www.gnu.org/licenses/>. +// + +#include <cron.h> +#include <printf.h> +#include <wb_utils.h> +#include <wb_uart.h> +#include <wb_i2c.h> +#include <wb_pkt_iface64.h> +#include <u3_net_stack.h> +#include <print_addrs.h> +#include <trace.h> +#include "../../../host/lib/usrp/n230/n230_eeprom.h" +#include "n230_init.h" +#include "../../../host/lib/usrp/n230/n230_fw_defs.h" + +static wb_pkt_iface64_config_t pkt_config; + +static void putc(void *p, char c) +{ +//If FW_TRACE_LEVEL is defined, then the trace level is set +//to a non-zero number. Turn on the debug UART to enable tracing +#ifdef UHD_FW_TRACE_LEVEL + wb_uart_putc(WB_DBG_UART_BASE, c); +#endif +} + +static uint32_t get_counter_val() +{ + return wb_peek32(SR_ADDR(WB_SBRB_BASE, RB_ZPU_COUNTER)); +} + +void n230_init(void) +{ + //TODO: We may need to remove the debug UART before we release. + //Initialize the debug UART first. + wb_uart_init(WB_DBG_UART_BASE, CPU_CLOCK_FREQ/DBG_UART_BAUD); + init_printf(NULL, putc); + + //Now we can init the rest with prints + UHD_FW_TRACE_FSTR(INFO, "[ZPU Init Begin -- CPU CLOCK is %d MHz]", (CPU_CLOCK_FREQ/1000000)); + + //Initialize cron and the per millisecond cron job + UHD_FW_TRACE(INFO, "Initializing cron..."); + cron_init(get_counter_val, CPU_CLOCK_FREQ); + cron_job_init(PER_MILLISEC_CRON_JOBID, 1); + cron_job_init(PER_SECOND_CRON_JOBID, 1000); + + //Initialize rate for I2C cores + UHD_FW_TRACE(INFO, "Initializing I2C..."); + for (uint32_t i = 0; i < N230_NUM_ETH_PORTS; i++) { + wb_i2c_init((i==1)?WB_ETH1_I2C_BASE:WB_ETH0_I2C_BASE, CPU_CLOCK_FREQ); + } + + //Initialize eeprom + read_n230_eeprom(); + + UHD_FW_TRACE(INFO, "Initializing network stack..."); + init_network_stack(); +} + +void init_network_stack(void) +{ + //Hold Ethernet PHYs in reset + wb_poke32(SR_ADDR(WB_SBRB_BASE, SR_ZPU_SW_RST), SR_ZPU_SW_RST_PHY); + + //Initialize ethernet packet interface + pkt_config = wb_pkt_iface64_init(WB_PKT_RAM_BASE, WB_PKT_RAM_CTRL_OFFSET); + u3_net_stack_init(&pkt_config); + + //Initialize MACs + for (uint32_t i = 0; i < N230_NUM_ETH_PORTS; i++) { + init_ethernet_mac(i); + } + + //Pull Ethernet PHYs out of reset + wb_poke32(SR_ADDR(WB_SBRB_BASE, SR_ZPU_SW_RST), SR_ZPU_SW_RST_NONE); +} + +void init_ethernet_mac(uint32_t iface_num) +{ + UHD_FW_TRACE_FSTR(INFO, "Initializing eth%d...", iface_num); + + //Get interface info from the EEPROM (or defaults otherwise) + const n230_eth_eeprom_map_t* eth_eeprom_map = get_n230_ethernet_info(iface_num); + const eth_mac_addr_t *my_mac = (const eth_mac_addr_t *) &(eth_eeprom_map->mac_addr); + const struct ip_addr *my_ip = (const struct ip_addr *) &(eth_eeprom_map->ip_addr); + const struct ip_addr *subnet = (const struct ip_addr *) &(eth_eeprom_map->subnet); + + //Init software fields related to ethernet + u3_net_stack_init_eth(iface_num, my_mac, my_ip, subnet); + + uint32_t dispatcher_base = + ((iface_num == 1) ? SR_ZPU_ETHINT1 : SR_ZPU_ETHINT0) + SR_ZPU_ETHINT_DISPATCHER_BASE; + + //Program dispatcher + wb_poke32(SR_ADDR(WB_SBRB_BASE, dispatcher_base + 0), + (my_mac->addr[5] << 0) | (my_mac->addr[4] << 8) | (my_mac->addr[3] << 16) | (my_mac->addr[2] << 24)); + wb_poke32(SR_ADDR(WB_SBRB_BASE, dispatcher_base + 1), (my_mac->addr[1] << 0) | (my_mac->addr[0] << 8)); + wb_poke32(SR_ADDR(WB_SBRB_BASE, dispatcher_base + 2), my_ip->addr); + wb_poke32(SR_ADDR(WB_SBRB_BASE, dispatcher_base + 4), 0/*nofwd*/); + wb_poke32(SR_ADDR(WB_SBRB_BASE, dispatcher_base + 5), (ICMP_IRQ << 8) | 0); //no fwd: type, code + + //DEBUG: Print initialized info + UHD_FW_TRACE_FSTR(INFO, "-- MAC%u: %s", iface_num, mac_addr_to_str(u3_net_stack_get_mac_addr(iface_num))); + UHD_FW_TRACE_FSTR(INFO, "-- IP%u: %s", iface_num, ip_addr_to_str(u3_net_stack_get_ip_addr(iface_num))); + UHD_FW_TRACE_FSTR(INFO, "-- SUBNET%u: %s", iface_num, ip_addr_to_str(u3_net_stack_get_subnet(iface_num))); + UHD_FW_TRACE_FSTR(INFO, "-- BCAST%u: %s", iface_num, ip_addr_to_str(u3_net_stack_get_bcast(iface_num))); +} + + |