2022cc6351
hackrf_usb firmware does not run from SPI flash once the ROM bootloader is done. Simplify assumptions by initializing SPI flash once, early. Do not initialize it every 256 bytes that are read from or written to the device.
117 lines
3.5 KiB
C
117 lines
3.5 KiB
C
/*
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* Copyright 2012 Jared Boone
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* Copyright 2013 Benjamin Vernoux
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*
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* This file is part of HackRF.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; see the file COPYING. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street,
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* Boston, MA 02110-1301, USA.
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*/
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#include "usb_api_spiflash.h"
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#include "usb_queue.h"
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#include <stddef.h>
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#include <w25q80bv.h>
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uint8_t spiflash_buffer[W25Q80BV_PAGE_LEN];
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usb_request_status_t usb_vendor_request_erase_spiflash(
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usb_endpoint_t* const endpoint, const usb_transfer_stage_t stage)
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{
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if (stage == USB_TRANSFER_STAGE_SETUP) {
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/* only chip erase is implemented */
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w25q80bv_chip_erase();
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usb_transfer_schedule_ack(endpoint->in);
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}
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return USB_REQUEST_STATUS_OK;
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}
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usb_request_status_t usb_vendor_request_write_spiflash(
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usb_endpoint_t* const endpoint, const usb_transfer_stage_t stage)
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{
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uint32_t addr = 0;
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uint16_t len = 0;
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if (stage == USB_TRANSFER_STAGE_SETUP) {
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addr = (endpoint->setup.value << 16) | endpoint->setup.index;
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len = endpoint->setup.length;
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if ((len > W25Q80BV_PAGE_LEN) || (addr > W25Q80BV_NUM_BYTES)
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|| ((addr + len) > W25Q80BV_NUM_BYTES)) {
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return USB_REQUEST_STATUS_STALL;
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} else {
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usb_transfer_schedule_block(endpoint->out, &spiflash_buffer[0], len,
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NULL, NULL);
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return USB_REQUEST_STATUS_OK;
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}
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} else if (stage == USB_TRANSFER_STAGE_DATA) {
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addr = (endpoint->setup.value << 16) | endpoint->setup.index;
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len = endpoint->setup.length;
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/* This check is redundant but makes me feel better. */
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if ((len > W25Q80BV_PAGE_LEN) || (addr > W25Q80BV_NUM_BYTES)
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|| ((addr + len) > W25Q80BV_NUM_BYTES)) {
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return USB_REQUEST_STATUS_STALL;
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} else {
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w25q80bv_program(addr, len, &spiflash_buffer[0]);
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usb_transfer_schedule_ack(endpoint->in);
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return USB_REQUEST_STATUS_OK;
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}
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} else {
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return USB_REQUEST_STATUS_OK;
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}
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}
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usb_request_status_t usb_vendor_request_read_spiflash(
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usb_endpoint_t* const endpoint, const usb_transfer_stage_t stage)
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{
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uint32_t addr;
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uint16_t len;
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if (stage == USB_TRANSFER_STAGE_SETUP)
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{
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addr = (endpoint->setup.value << 16) | endpoint->setup.index;
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len = endpoint->setup.length;
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if ((len > W25Q80BV_PAGE_LEN) || (addr > W25Q80BV_NUM_BYTES)
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|| ((addr + len) > W25Q80BV_NUM_BYTES)) {
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return USB_REQUEST_STATUS_STALL;
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} else {
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w25q80bv_read(addr, len, &spiflash_buffer[0]);
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usb_transfer_schedule_block(endpoint->in, &spiflash_buffer[0], len,
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NULL, NULL);
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return USB_REQUEST_STATUS_OK;
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}
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} else if (stage == USB_TRANSFER_STAGE_DATA)
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{
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addr = (endpoint->setup.value << 16) | endpoint->setup.index;
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len = endpoint->setup.length;
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/* This check is redundant but makes me feel better. */
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if ((len > W25Q80BV_PAGE_LEN) || (addr > W25Q80BV_NUM_BYTES)
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|| ((addr + len) > W25Q80BV_NUM_BYTES))
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{
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return USB_REQUEST_STATUS_STALL;
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} else
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{
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usb_transfer_schedule_ack(endpoint->out);
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return USB_REQUEST_STATUS_OK;
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}
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} else
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{
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return USB_REQUEST_STATUS_OK;
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}
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}
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