diff options
Diffstat (limited to 'firmware/zpu/usrp2p/bootloader/init_bootloader.c')
| -rw-r--r-- | firmware/zpu/usrp2p/bootloader/init_bootloader.c | 123 |
1 files changed, 123 insertions, 0 deletions
diff --git a/firmware/zpu/usrp2p/bootloader/init_bootloader.c b/firmware/zpu/usrp2p/bootloader/init_bootloader.c new file mode 100644 index 000000000..d797edce4 --- /dev/null +++ b/firmware/zpu/usrp2p/bootloader/init_bootloader.c @@ -0,0 +1,123 @@ +// +// Copyright 2010-2011 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 <memory_map.h> +#include <nonstdio.h> +#include <hal_io.h> +#include <xilinx_s3_icap.h> +#include <spi_flash.h> +#include <spi_flash_private.h> +#include <mdelay.h> +#include <ihex.h> +#include <bootloader_utils.h> +#include <string.h> +#include <hal_uart.h> +#include <i2c.h> +#include "usrp2/fw_common.h" + +#define BUTTON_PUSHED ((router_status->irqs & PIC_BUTTON) ? 0 : 1) + +void load_ihex(void) { //simple IHEX parser to load proper records into RAM. loads program when it receives end of record. + char buf[128]; //input data buffer + uint8_t ihx[32]; //ihex data buffer + + ihex_record_t ihex_record; + ihex_record.data = ihx; + + while(1) { + gets(buf); + + if(!ihex_parse(buf, &ihex_record)) { //RAM data record is valid + if(ihex_record.type == 1) { //end of record + puts("OK"); + //load main firmware + start_program(); + puts("ERROR: main image returned! Back in IHEX load mode."); + } else { + const uint8_t *destination = (uint8_t *)ihex_record.addr + RAM_BASE; + memcpy((void *) destination, ihex_record.data, ihex_record.length); + puts("OK"); + } + } else puts("NOK"); + } +} + +int main(int argc, char *argv[]) { + hal_disable_ints(); // In case we got here via jmp 0x0 + output_regs->leds = 0xFF; + mdelay(100); + output_regs->leds = 0x00; + hal_uart_init(); + spif_init(); + i2c_init(); //for EEPROM + puts("USRP2+ bootloader super ultra ZPU edition\n"); + + bool production_image = find_safe_booted_flag(); + set_safe_booted_flag(0); //haven't booted yet + + if(BUTTON_PUSHED) { //see memory_map.h + puts("Starting USRP2+ in safe mode."); + if(is_valid_fw_image(SAFE_FW_IMAGE_LOCATION_ADDR)) { + set_safe_booted_flag(1); //let the firmware know it's the safe image + spi_flash_read(SAFE_FW_IMAGE_LOCATION_ADDR, FW_IMAGE_SIZE_BYTES, (void *)RAM_BASE); + start_program(); + puts("ERROR: return from main program! This should never happen!"); + icap_reload_fpga(SAFE_FPGA_IMAGE_LOCATION_ADDR); + } else { + puts("ERROR: no safe firmware image available. I am a brick. Feel free to load IHEX to RAM."); + load_ihex(); + } + } + + if(!production_image) { + puts("Checking for valid production FPGA image..."); + if(is_valid_fpga_image(PROD_FPGA_IMAGE_LOCATION_ADDR)) { + puts("Valid production FPGA image found. Attempting to boot."); + set_safe_booted_flag(1); + mdelay(300); //so serial output can finish + icap_reload_fpga(PROD_FPGA_IMAGE_LOCATION_ADDR); + } + puts("No valid production FPGA image found.\nAttempting to load production firmware..."); + } + if(is_valid_fw_image(PROD_FW_IMAGE_LOCATION_ADDR)) { + puts("Valid production firmware found. Loading..."); + spi_flash_read(PROD_FW_IMAGE_LOCATION_ADDR, FW_IMAGE_SIZE_BYTES, (void *)RAM_BASE); + puts("Finished loading. Starting image."); + mdelay(300); + start_program(); + puts("ERROR: Return from main program! This should never happen!"); + //if this happens, though, the safest thing to do is reboot the whole FPGA and start over. + mdelay(300); + icap_reload_fpga(SAFE_FPGA_IMAGE_LOCATION_ADDR); + return 1; + } + puts("No valid production firmware found. Trying safe firmware..."); + if(is_valid_fw_image(SAFE_FW_IMAGE_LOCATION_ADDR)) { + spi_flash_read(SAFE_FW_IMAGE_LOCATION_ADDR, FW_IMAGE_SIZE_BYTES, (void *)RAM_BASE); + puts("Finished loading. Starting image."); + mdelay(300); + start_program(); + puts("ERROR: return from main program! This should never happen!"); + mdelay(300); + icap_reload_fpga(SAFE_FPGA_IMAGE_LOCATION_ADDR); + return 1; + } + puts("ERROR: no safe firmware image available. I am a brick. Feel free to load IHEX to RAM."); + load_ihex(); + + return 0; +} |