From 361300327fceb20a5256cc9c5e5c6096cdbcd014 Mon Sep 17 00:00:00 2001 From: Nick Foster Date: Fri, 22 Apr 2011 11:28:27 -0700 Subject: N210: TXRX_UHD now has bootloader #ifdef'ed into it. Safe firmware now embedded into FPGA bootloader. Also did some cleanup of unused source files and consolidated bootloader stuff into bootloader_utils. --- firmware/zpu/usrp2p/bootloader/fpga_bootloader.c | 202 ----------------------- 1 file changed, 202 deletions(-) delete mode 100644 firmware/zpu/usrp2p/bootloader/fpga_bootloader.c (limited to 'firmware/zpu/usrp2p/bootloader/fpga_bootloader.c') diff --git a/firmware/zpu/usrp2p/bootloader/fpga_bootloader.c b/firmware/zpu/usrp2p/bootloader/fpga_bootloader.c deleted file mode 100644 index f5a71a8bb..000000000 --- a/firmware/zpu/usrp2p/bootloader/fpga_bootloader.c +++ /dev/null @@ -1,202 +0,0 @@ -/* -*- c -*- */ -/* - * Copyright 2009-2011 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 . - */ - -/* - * This code is bootloader f/w for the slot 0 fpga image. It's job is - * to figure out which fpga image should be loaded, and then to load - * that image from the SPI flash. (FIXME handle retries, errors, - * etc.) - * - * If the center button is down during boot, it loads firwmare - * from 0:0 instead of its normal action. - */ - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#define VERBOSE 1 - -#define OUR_FPGA_IMAGE_NUMBER 0 // this code only runs in slot 0 - -void hal_uart_init(void); -void spif_init(void); -void i2c_init(void); -void bootconfig_init(void); - -void pic_interrupt_handler() __attribute__ ((interrupt_handler)); - -void pic_interrupt_handler() -{ - // nop stub -} - -static int -flash_addr_of_fpga_slot(unsigned int fpga_slot) -{ - const struct flashdir *fd = get_flashdir(); - return fd->slot[fpga_slot + fd->fpga_slot0].start << spi_flash_log2_sector_size(); -} - - -/* - * If the first 256 bytes of the image contain the string of bytes, - * ff ff ff ff aa 99 55 66, we consider it a likely bitstream. - */ -static bool -looks_like_a_bitstream(unsigned int fpga_slot) -{ - unsigned char buf[256]; - static const unsigned char pattern[] = { - 0xff, 0xff, 0xff, 0xff, 0xaa, 0x99, 0x55, 0x66 - }; - - // Read the first 256 bytes of the bitstream - spi_flash_read(flash_addr_of_fpga_slot(fpga_slot), sizeof(buf), buf); - - for (int i = 0; i <= sizeof(buf) - sizeof(pattern); i++) - if (memcmp(pattern, &buf[i], sizeof(pattern)) == 0) - return true; - - return false; -} - -static bool -plausible_bootconfig(bootconfig_t bc) -{ - // Are the fields in range? - if (!validate_bootconfig(bc)) - return false; - - if (!looks_like_a_bitstream(map_fpga_image_number_to_fpga_slot(bc.fpga_image_number))) - return false; - - return true; -} - -// Attempt to boot the fpga image specified in next_boot -static void -initial_boot_attempt(eeprom_boot_info_t *ee) -{ - if (ee->next_boot.fpga_image_number == OUR_FPGA_IMAGE_NUMBER){ - load_firmware(); - return; - } - - ee->nattempts = 1; - _bc_write_eeprom_shadow(); - - unsigned int target_slot = - map_fpga_image_number_to_fpga_slot(ee->next_boot.fpga_image_number); - int flash_addr = flash_addr_of_fpga_slot(target_slot); - - putstr("fpga_bootloader: chaining to "); - puthex4(ee->next_boot.fpga_image_number); - putchar(':'); - puthex4(ee->next_boot.firmware_image_number); - newline(); - mdelay(100); - - while (1){ - icap_reload_fpga(flash_addr); - } -} - -int -main(int argc, char **argv) -{ - hal_disable_ints(); // In case we got here via jmp 0x0 - hal_uart_init(); - i2c_init(); - bootconfig_init(); // Must come after i2c_init. - spif_init(); // Needed for get_flashdir. - - sr_leds->leds = 0xAAAA; - - putstr("\n\n>>> fpga_bootloader <<<\n"); - - putstr("\nBOOTSTS "); - int bootsts = icap_read_config_reg(rBOOTSTS); - puthex32_nl(bootsts); - putstr("STAT "); - int stat = icap_read_config_reg(rSTAT); - puthex32_nl(stat); - - bool fallback = - ((bootsts & (BOOTSTS_VALID_0 | BOOTSTS_FALLBACK_0)) - == (BOOTSTS_VALID_0 | BOOTSTS_FALLBACK_0)); - - if (fallback){ - puts("FALLBACK_0 is set"); - // FIXME handle fallback condition. - } - - const struct flashdir *fd = get_flashdir(); - if (fd == 0) - abort(); - - eeprom_boot_info_t *ee = _bc_get_eeprom_shadow(); - - if (VERBOSE){ - putstr("nattempts: "); - puthex8_nl(ee->nattempts); - } - - mdelay(500); // wait for low-pass on switches - putstr("switches: "); puthex32_nl(readback->switches); - - bool center_btn_down = (readback->switches & BTN_CENTER) != 0; - if (center_btn_down){ - putstr("Center button is down!\n"); - // Force boot of image 0:0 - ee->next_boot = make_bootconfig(0, 0); - } - - // if next_boot is valid, try it - if (plausible_bootconfig(ee->next_boot)) - initial_boot_attempt(ee); // no return - - // if default_boot is valid, try it - if (plausible_bootconfig(ee->default_boot)){ - ee->next_boot = ee->default_boot; - initial_boot_attempt(ee); // no return - } - - // If we're here, we're in trouble. Try all of them... - for (int i = 0; i < 4; i++){ - bootconfig_t bc = make_bootconfig(i, 0); - if (plausible_bootconfig(bc)){ - ee->next_boot = bc; - initial_boot_attempt(ee); // no return - } - } - - // FIXME, try to find something we can load - puts("\n!!! Failed to find a valid FPGA bitstream!\n\n"); - - return 0; -} -- cgit v1.2.3