+++ /dev/null
-/*
- * Copyright © 2001 Stephen Williams (steve@icarus.com)
- * Copyright © 2001-2002 David Brownell (dbrownell@users.sourceforge.net)
- * Copyright © 2008 Roger Williams (rawqux@users.sourceforge.net)
- * Copyright © 2012 Pete Batard (pete@akeo.ie)
- * Copyright © 2013 Federico Manzan (f.manzan@gmail.com)
- *
- * This source code is free software; you can redistribute it
- * and/or modify it in source code form under the terms of the GNU
- * General Public License as published by the Free Software
- * Foundation; either version 2 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, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
- */
-#include <stdio.h>
-#include <errno.h>
-#include <stdlib.h>
-#include <string.h>
-#include <stdint.h>
-
-#include "libusb.h"
-#include "ezusb.h"
-
-extern void logerror(const char *format, ...)
- __attribute__ ((format(printf, 1, 2)));
-
-/*
- * This file contains functions for uploading firmware into Cypress
- * EZ-USB microcontrollers. These chips use control endpoint 0 and vendor
- * specific commands to support writing into the on-chip SRAM. They also
- * support writing into the CPUCS register, which is how we reset the
- * processor after loading firmware (including the reset vector).
- *
- * These Cypress devices are 8-bit 8051 based microcontrollers with
- * special support for USB I/O. They come in several packages, and
- * some can be set up with external memory when device costs allow.
- * Note that the design was originally by AnchorChips, so you may find
- * references to that vendor (which was later merged into Cypress).
- * The Cypress FX parts are largely compatible with the Anchorhip ones.
- */
-
-int verbose = 1;
-
-/*
- * return true if [addr,addr+len] includes external RAM
- * for Anchorchips EZ-USB or Cypress EZ-USB FX
- */
-static bool fx_is_external(uint32_t addr, size_t len)
-{
- /* with 8KB RAM, 0x0000-0x1b3f can be written
- * we can't tell if it's a 4KB device here
- */
- if (addr <= 0x1b3f)
- return ((addr + len) > 0x1b40);
-
- /* there may be more RAM; unclear if we can write it.
- * some bulk buffers may be unused, 0x1b3f-0x1f3f
- * firmware can set ISODISAB for 2KB at 0x2000-0x27ff
- */
- return true;
-}
-
-/*
- * return true if [addr,addr+len] includes external RAM
- * for Cypress EZ-USB FX2
- */
-static bool fx2_is_external(uint32_t addr, size_t len)
-{
- /* 1st 8KB for data/code, 0x0000-0x1fff */
- if (addr <= 0x1fff)
- return ((addr + len) > 0x2000);
-
- /* and 512 for data, 0xe000-0xe1ff */
- else if (addr >= 0xe000 && addr <= 0xe1ff)
- return ((addr + len) > 0xe200);
-
- /* otherwise, it's certainly external */
- else
- return true;
-}
-
-/*
- * return true if [addr,addr+len] includes external RAM
- * for Cypress EZ-USB FX2LP
- */
-static bool fx2lp_is_external(uint32_t addr, size_t len)
-{
- /* 1st 16KB for data/code, 0x0000-0x3fff */
- if (addr <= 0x3fff)
- return ((addr + len) > 0x4000);
-
- /* and 512 for data, 0xe000-0xe1ff */
- else if (addr >= 0xe000 && addr <= 0xe1ff)
- return ((addr + len) > 0xe200);
-
- /* otherwise, it's certainly external */
- else
- return true;
-}
-
-
-/*****************************************************************************/
-
-/*
- * These are the requests (bRequest) that the bootstrap loader is expected
- * to recognize. The codes are reserved by Cypress, and these values match
- * what EZ-USB hardware, or "Vend_Ax" firmware (2nd stage loader) uses.
- * Cypress' "a3load" is nice because it supports both FX and FX2, although
- * it doesn't have the EEPROM support (subset of "Vend_Ax").
- */
-#define RW_INTERNAL 0xA0 /* hardware implements this one */
-#define RW_MEMORY 0xA3
-
-/*
- * Issues the specified vendor-specific write request.
- */
-static int ezusb_write(libusb_device_handle *device, const char *label,
- uint8_t opcode, uint32_t addr, const unsigned char *data, size_t len)
-{
- int status;
-
- if (verbose > 1)
- logerror("%s, addr 0x%08x len %4u (0x%04x)\n", label, addr, (unsigned)len, (unsigned)len);
- status = libusb_control_transfer(device,
- LIBUSB_ENDPOINT_OUT | LIBUSB_REQUEST_TYPE_VENDOR | LIBUSB_RECIPIENT_DEVICE,
- opcode, addr & 0xFFFF, addr >> 16,
- (unsigned char*)data, (uint16_t)len, 1000);
- if (status != (signed)len) {
- if (status < 0)
- logerror("%s: %s\n", label, libusb_error_name(status));
- else
- logerror("%s ==> %d\n", label, status);
- }
- return (status < 0) ? -EIO : 0;
-}
-
-/*
- * Issues the specified vendor-specific read request.
- */
-static int ezusb_read(libusb_device_handle *device, const char *label,
- uint8_t opcode, uint32_t addr, const unsigned char *data, size_t len)
-{
- int status;
-
- if (verbose > 1)
- logerror("%s, addr 0x%08x len %4u (0x%04x)\n", label, addr, (unsigned)len, (unsigned)len);
- status = libusb_control_transfer(device,
- LIBUSB_ENDPOINT_IN | LIBUSB_REQUEST_TYPE_VENDOR | LIBUSB_RECIPIENT_DEVICE,
- opcode, addr & 0xFFFF, addr >> 16,
- (unsigned char*)data, (uint16_t)len, 1000);
- if (status != (signed)len) {
- if (status < 0)
- logerror("%s: %s\n", label, libusb_error_name(status));
- else
- logerror("%s ==> %d\n", label, status);
- }
- return (status < 0) ? -EIO : 0;
-}
-
-/*
- * Modifies the CPUCS register to stop or reset the CPU.
- * Returns false on error.
- */
-static bool ezusb_cpucs(libusb_device_handle *device, uint32_t addr, bool doRun)
-{
- int status;
- uint8_t data = doRun ? 0x00 : 0x01;
-
- if (verbose)
- logerror("%s\n", data ? "stop CPU" : "reset CPU");
- status = libusb_control_transfer(device,
- LIBUSB_ENDPOINT_OUT | LIBUSB_REQUEST_TYPE_VENDOR | LIBUSB_RECIPIENT_DEVICE,
- RW_INTERNAL, addr & 0xFFFF, addr >> 16,
- &data, 1, 1000);
- if ((status != 1) &&
- /* We may get an I/O error from libusb as the device disappears */
- ((!doRun) || (status != LIBUSB_ERROR_IO)))
- {
- const char *mesg = "can't modify CPUCS";
- if (status < 0)
- logerror("%s: %s\n", mesg, libusb_error_name(status));
- else
- logerror("%s\n", mesg);
- return false;
- } else
- return true;
-}
-
-/*
- * Send an FX3 jumpt to address command
- * Returns false on error.
- */
-static bool ezusb_fx3_jump(libusb_device_handle *device, uint32_t addr)
-{
- int status;
-
- if (verbose)
- logerror("transfer execution to Program Entry at 0x%08x\n", addr);
- status = libusb_control_transfer(device,
- LIBUSB_ENDPOINT_OUT | LIBUSB_REQUEST_TYPE_VENDOR | LIBUSB_RECIPIENT_DEVICE,
- RW_INTERNAL, addr & 0xFFFF, addr >> 16,
- NULL, 0, 1000);
- /* We may get an I/O error from libusb as the device disappears */
- if ((status != 0) && (status != LIBUSB_ERROR_IO))
- {
- const char *mesg = "failed to send jump command";
- if (status < 0)
- logerror("%s: %s\n", mesg, libusb_error_name(status));
- else
- logerror("%s\n", mesg);
- return false;
- } else
- return true;
-}
-
-/*****************************************************************************/
-
-/*
- * Parse an Intel HEX image file and invoke the poke() function on the
- * various segments to implement policies such as writing to RAM (with
- * a one or two stage loader setup, depending on the firmware) or to
- * EEPROM (two stages required).
- *
- * image - the hex image file
- * context - for use by poke()
- * is_external - if non-null, used to check which segments go into
- * external memory (writable only by software loader)
- * poke - called with each memory segment; errors indicated
- * by returning negative values.
- *
- * Caller is responsible for halting CPU as needed, such as when
- * overwriting a second stage loader.
- */
-static int parse_ihex(FILE *image, void *context,
- bool (*is_external)(uint32_t addr, size_t len),
- int (*poke) (void *context, uint32_t addr, bool external,
- const unsigned char *data, size_t len))
-{
- unsigned char data[1023];
- uint32_t data_addr = 0;
- size_t data_len = 0;
- int rc;
- int first_line = 1;
- bool external = false;
-
- /* Read the input file as an IHEX file, and report the memory segments
- * as we go. Each line holds a max of 16 bytes, but uploading is
- * faster (and EEPROM space smaller) if we merge those lines into larger
- * chunks. Most hex files keep memory segments together, which makes
- * such merging all but free. (But it may still be worth sorting the
- * hex files to make up for undesirable behavior from tools.)
- *
- * Note that EEPROM segments max out at 1023 bytes; the upload protocol
- * allows segments of up to 64 KBytes (more than a loader could handle).
- */
- for (;;) {
- char buf[512], *cp;
- char tmp, type;
- size_t len;
- unsigned idx, off;
-
- cp = fgets(buf, sizeof(buf), image);
- if (cp == NULL) {
- logerror("EOF without EOF record!\n");
- break;
- }
-
- /* EXTENSION: "# comment-till-end-of-line", for copyrights etc */
- if (buf[0] == '#')
- continue;
-
- if (buf[0] != ':') {
- logerror("not an ihex record: %s", buf);
- return -2;
- }
-
- /* ignore any newline */
- cp = strchr(buf, '\n');
- if (cp)
- *cp = 0;
-
- if (verbose >= 3)
- logerror("** LINE: %s\n", buf);
-
- /* Read the length field (up to 16 bytes) */
- tmp = buf[3];
- buf[3] = 0;
- len = strtoul(buf+1, NULL, 16);
- buf[3] = tmp;
-
- /* Read the target offset (address up to 64KB) */
- tmp = buf[7];
- buf[7] = 0;
- off = (int)strtoul(buf+3, NULL, 16);
- buf[7] = tmp;
-
- /* Initialize data_addr */
- if (first_line) {
- data_addr = off;
- first_line = 0;
- }
-
- /* Read the record type */
- tmp = buf[9];
- buf[9] = 0;
- type = (char)strtoul(buf+7, NULL, 16);
- buf[9] = tmp;
-
- /* If this is an EOF record, then make it so. */
- if (type == 1) {
- if (verbose >= 2)
- logerror("EOF on hexfile\n");
- break;
- }
-
- if (type != 0) {
- logerror("unsupported record type: %u\n", type);
- return -3;
- }
-
- if ((len * 2) + 11 > strlen(buf)) {
- logerror("record too short?\n");
- return -4;
- }
-
- /* FIXME check for _physically_ contiguous not just virtually
- * e.g. on FX2 0x1f00-0x2100 includes both on-chip and external
- * memory so it's not really contiguous */
-
- /* flush the saved data if it's not contiguous,
- * or when we've buffered as much as we can.
- */
- if (data_len != 0
- && (off != (data_addr + data_len)
- /* || !merge */
- || (data_len + len) > sizeof(data))) {
- if (is_external)
- external = is_external(data_addr, data_len);
- rc = poke(context, data_addr, external, data, data_len);
- if (rc < 0)
- return -1;
- data_addr = off;
- data_len = 0;
- }
-
- /* append to saved data, flush later */
- for (idx = 0, cp = buf+9 ; idx < len ; idx += 1, cp += 2) {
- tmp = cp[2];
- cp[2] = 0;
- data[data_len + idx] = (uint8_t)strtoul(cp, NULL, 16);
- cp[2] = tmp;
- }
- data_len += len;
- }
-
-
- /* flush any data remaining */
- if (data_len != 0) {
- if (is_external)
- external = is_external(data_addr, data_len);
- rc = poke(context, data_addr, external, data, data_len);
- if (rc < 0)
- return -1;
- }
- return 0;
-}
-
-/*
- * Parse a binary image file and write it as is to the target.
- * Applies to Cypress BIX images for RAM or Cypress IIC images
- * for EEPROM.
- *
- * image - the BIX image file
- * context - for use by poke()
- * is_external - if non-null, used to check which segments go into
- * external memory (writable only by software loader)
- * poke - called with each memory segment; errors indicated
- * by returning negative values.
- *
- * Caller is responsible for halting CPU as needed, such as when
- * overwriting a second stage loader.
- */
-static int parse_bin(FILE *image, void *context,
- bool (*is_external)(uint32_t addr, size_t len), int (*poke)(void *context,
- uint32_t addr, bool external, const unsigned char *data, size_t len))
-{
- unsigned char data[4096];
- uint32_t data_addr = 0;
- size_t data_len = 0;
- int rc;
- bool external = false;
-
- for (;;) {
- data_len = fread(data, 1, 4096, image);
- if (data_len == 0)
- break;
- if (is_external)
- external = is_external(data_addr, data_len);
- rc = poke(context, data_addr, external, data, data_len);
- if (rc < 0)
- return -1;
- data_addr += (uint32_t)data_len;
- }
- return feof(image)?0:-1;
-}
-
-/*
- * Parse a Cypress IIC image file and invoke the poke() function on the
- * various segments for writing to RAM
- *
- * image - the IIC image file
- * context - for use by poke()
- * is_external - if non-null, used to check which segments go into
- * external memory (writable only by software loader)
- * poke - called with each memory segment; errors indicated
- * by returning negative values.
- *
- * Caller is responsible for halting CPU as needed, such as when
- * overwriting a second stage loader.
- */
-static int parse_iic(FILE *image, void *context,
- bool (*is_external)(uint32_t addr, size_t len),
- int (*poke)(void *context, uint32_t addr, bool external, const unsigned char *data, size_t len))
-{
- unsigned char data[4096];
- uint32_t data_addr = 0;
- size_t data_len = 0, read_len;
- uint8_t block_header[4];
- int rc;
- bool external = false;
- long file_size, initial_pos;
-
- initial_pos = ftell(image);
- if (initial_pos < 0)
- return -1;
-
- if (fseek(image, 0L, SEEK_END) != 0)
- return -1;
- file_size = ftell(image);
- if (fseek(image, initial_pos, SEEK_SET) != 0)
- return -1;
- for (;;) {
- /* Ignore the trailing reset IIC data (5 bytes) */
- if (ftell(image) >= (file_size - 5))
- break;
- if (fread(&block_header, 1, sizeof(block_header), image) != 4) {
- logerror("unable to read IIC block header\n");
- return -1;
- }
- data_len = (block_header[0] << 8) + block_header[1];
- data_addr = (block_header[2] << 8) + block_header[3];
- if (data_len > sizeof(data)) {
- /* If this is ever reported as an error, switch to using malloc/realloc */
- logerror("IIC data block too small - please report this error to libusb.info\n");
- return -1;
- }
- read_len = fread(data, 1, data_len, image);
- if (read_len != data_len) {
- logerror("read error\n");
- return -1;
- }
- if (is_external)
- external = is_external(data_addr, data_len);
- rc = poke(context, data_addr, external, data, data_len);
- if (rc < 0)
- return -1;
- }
- return 0;
-}
-
-/* the parse call will be selected according to the image type */
-static int (*parse[IMG_TYPE_MAX])(FILE *image, void *context, bool (*is_external)(uint32_t addr, size_t len),
- int (*poke)(void *context, uint32_t addr, bool external, const unsigned char *data, size_t len))
- = { parse_ihex, parse_iic, parse_bin };
-
-/*****************************************************************************/
-
-/*
- * For writing to RAM using a first (hardware) or second (software)
- * stage loader and 0xA0 or 0xA3 vendor requests
- */
-typedef enum {
- _undef = 0,
- internal_only, /* hardware first-stage loader */
- skip_internal, /* first phase, second-stage loader */
- skip_external /* second phase, second-stage loader */
-} ram_mode;
-
-struct ram_poke_context {
- libusb_device_handle *device;
- ram_mode mode;
- size_t total, count;
-};
-
-#define RETRY_LIMIT 5
-
-static int ram_poke(void *context, uint32_t addr, bool external,
- const unsigned char *data, size_t len)
-{
- struct ram_poke_context *ctx = (struct ram_poke_context*)context;
- int rc;
- unsigned retry = 0;
-
- switch (ctx->mode) {
- case internal_only: /* CPU should be stopped */
- if (external) {
- logerror("can't write %u bytes external memory at 0x%08x\n",
- (unsigned)len, addr);
- return -EINVAL;
- }
- break;
- case skip_internal: /* CPU must be running */
- if (!external) {
- if (verbose >= 2) {
- logerror("SKIP on-chip RAM, %u bytes at 0x%08x\n",
- (unsigned)len, addr);
- }
- return 0;
- }
- break;
- case skip_external: /* CPU should be stopped */
- if (external) {
- if (verbose >= 2) {
- logerror("SKIP external RAM, %u bytes at 0x%08x\n",
- (unsigned)len, addr);
- }
- return 0;
- }
- break;
- case _undef:
- default:
- logerror("bug\n");
- return -EDOM;
- }
-
- ctx->total += len;
- ctx->count++;
-
- /* Retry this till we get a real error. Control messages are not
- * NAKed (just dropped) so time out means is a real problem.
- */
- while ((rc = ezusb_write(ctx->device,
- external ? "write external" : "write on-chip",
- external ? RW_MEMORY : RW_INTERNAL,
- addr, data, len)) < 0
- && retry < RETRY_LIMIT) {
- if (rc != LIBUSB_ERROR_TIMEOUT)
- break;
- retry += 1;
- }
- return rc;
-}
-
-/*
- * Load a Cypress Image file into target RAM.
- * See http://www.cypress.com/?docID=41351 (AN76405 PDF) for more info.
- */
-static int fx3_load_ram(libusb_device_handle *device, const char *path)
-{
- uint32_t dCheckSum, dExpectedCheckSum, dAddress, i, dLen, dLength;
- uint32_t* dImageBuf;
- unsigned char *bBuf, hBuf[4], blBuf[4], rBuf[4096];
- FILE *image;
- int ret = 0;
-
- image = fopen(path, "rb");
- if (image == NULL) {
- logerror("unable to open '%s' for input\n", path);
- return -2;
- } else if (verbose)
- logerror("open firmware image %s for RAM upload\n", path);
-
- // Read header
- if (fread(hBuf, sizeof(char), sizeof(hBuf), image) != sizeof(hBuf)) {
- logerror("could not read image header");
- ret = -3;
- goto exit;
- }
-
- // check "CY" signature byte and format
- if ((hBuf[0] != 'C') || (hBuf[1] != 'Y')) {
- logerror("image doesn't have a CYpress signature\n");
- ret = -3;
- goto exit;
- }
-
- // Check bImageType
- switch(hBuf[3]) {
- case 0xB0:
- if (verbose)
- logerror("normal FW binary %s image with checksum\n", (hBuf[2]&0x01)?"data":"executable");
- break;
- case 0xB1:
- logerror("security binary image is not currently supported\n");
- ret = -3;
- goto exit;
- case 0xB2:
- logerror("VID:PID image is not currently supported\n");
- ret = -3;
- goto exit;
- default:
- logerror("invalid image type 0x%02X\n", hBuf[3]);
- ret = -3;
- goto exit;
- }
-
- // Read the bootloader version
- if (verbose) {
- if ((ezusb_read(device, "read bootloader version", RW_INTERNAL, 0xFFFF0020, blBuf, 4) < 0)) {
- logerror("Could not read bootloader version\n");
- ret = -8;
- goto exit;
- }
- logerror("FX3 bootloader version: 0x%02X%02X%02X%02X\n", blBuf[3], blBuf[2], blBuf[1], blBuf[0]);
- }
-
- dCheckSum = 0;
- if (verbose)
- logerror("writing image...\n");
- while (1) {
- if ((fread(&dLength, sizeof(uint32_t), 1, image) != 1) || // read dLength
- (fread(&dAddress, sizeof(uint32_t), 1, image) != 1)) { // read dAddress
- logerror("could not read image");
- ret = -3;
- goto exit;
- }
- if (dLength == 0)
- break; // done
-
- // coverity[tainted_data]
- dImageBuf = (uint32_t*)calloc(dLength, sizeof(uint32_t));
- if (dImageBuf == NULL) {
- logerror("could not allocate buffer for image chunk\n");
- ret = -4;
- goto exit;
- }
-
- // read sections
- if (fread(dImageBuf, sizeof(uint32_t), dLength, image) != dLength) {
- logerror("could not read image");
- free(dImageBuf);
- ret = -3;
- goto exit;
- }
- for (i = 0; i < dLength; i++)
- dCheckSum += dImageBuf[i];
- dLength <<= 2; // convert to Byte length
- bBuf = (unsigned char*) dImageBuf;
-
- while (dLength > 0) {
- dLen = 4096; // 4K max
- if (dLen > dLength)
- dLen = dLength;
- if ((ezusb_write(device, "write firmware", RW_INTERNAL, dAddress, bBuf, dLen) < 0) ||
- (ezusb_read(device, "read firmware", RW_INTERNAL, dAddress, rBuf, dLen) < 0)) {
- logerror("R/W error\n");
- free(dImageBuf);
- ret = -5;
- goto exit;
- }
- // Verify data: rBuf with bBuf
- for (i = 0; i < dLen; i++) {
- if (rBuf[i] != bBuf[i]) {
- logerror("verify error");
- free(dImageBuf);
- ret = -6;
- goto exit;
- }
- }
-
- dLength -= dLen;
- bBuf += dLen;
- dAddress += dLen;
- }
- free(dImageBuf);
- }
-
- // read pre-computed checksum data
- if ((fread(&dExpectedCheckSum, sizeof(uint32_t), 1, image) != 1) ||
- (dCheckSum != dExpectedCheckSum)) {
- logerror("checksum error\n");
- ret = -7;
- goto exit;
- }
-
- // transfer execution to Program Entry
- if (!ezusb_fx3_jump(device, dAddress)) {
- ret = -6;
- }
-
-exit:
- fclose(image);
- return ret;
-}
-
-/*
- * Load a firmware file into target RAM. device is the open libusb
- * device, and the path is the name of the source file. Open the file,
- * parse the bytes, and write them in one or two phases.
- *
- * If stage == 0, this uses the first stage loader, built into EZ-USB
- * hardware but limited to writing on-chip memory or CPUCS. Everything
- * is written during one stage, unless there's an error such as the image
- * holding data that needs to be written to external memory.
- *
- * Otherwise, things are written in two stages. First the external
- * memory is written, expecting a second stage loader to have already
- * been loaded. Then file is re-parsed and on-chip memory is written.
- */
-int ezusb_load_ram(libusb_device_handle *device, const char *path, int fx_type, int img_type, int stage)
-{
- FILE *image;
- uint32_t cpucs_addr;
- bool (*is_external)(uint32_t off, size_t len);
- struct ram_poke_context ctx;
- int status;
- uint8_t iic_header[8] = { 0 };
- int ret = 0;
-
- if (fx_type == FX_TYPE_FX3)
- return fx3_load_ram(device, path);
-
- image = fopen(path, "rb");
- if (image == NULL) {
- logerror("%s: unable to open for input.\n", path);
- return -2;
- } else if (verbose > 1)
- logerror("open firmware image %s for RAM upload\n", path);
-
- if (img_type == IMG_TYPE_IIC) {
- if ( (fread(iic_header, 1, sizeof(iic_header), image) != sizeof(iic_header))
- || (((fx_type == FX_TYPE_FX2LP) || (fx_type == FX_TYPE_FX2)) && (iic_header[0] != 0xC2))
- || ((fx_type == FX_TYPE_AN21) && (iic_header[0] != 0xB2))
- || ((fx_type == FX_TYPE_FX1) && (iic_header[0] != 0xB6)) ) {
- logerror("IIC image does not contain executable code - cannot load to RAM.\n");
- ret = -1;
- goto exit;
- }
- }
-
- /* EZ-USB original/FX and FX2 devices differ, apart from the 8051 core */
- switch(fx_type) {
- case FX_TYPE_FX2LP:
- cpucs_addr = 0xe600;
- is_external = fx2lp_is_external;
- break;
- case FX_TYPE_FX2:
- cpucs_addr = 0xe600;
- is_external = fx2_is_external;
- break;
- default:
- cpucs_addr = 0x7f92;
- is_external = fx_is_external;
- break;
- }
-
- /* use only first stage loader? */
- if (stage == 0) {
- ctx.mode = internal_only;
-
- /* if required, halt the CPU while we overwrite its code/data */
- if (cpucs_addr && !ezusb_cpucs(device, cpucs_addr, false))
- {
- ret = -1;
- goto exit;
- }
-
- /* 2nd stage, first part? loader was already uploaded */
- } else {
- ctx.mode = skip_internal;
-
- /* let CPU run; overwrite the 2nd stage loader later */
- if (verbose)
- logerror("2nd stage: write external memory\n");
- }
-
- /* scan the image, first (maybe only) time */
- ctx.device = device;
- ctx.total = ctx.count = 0;
- status = parse[img_type](image, &ctx, is_external, ram_poke);
- if (status < 0) {
- logerror("unable to upload %s\n", path);
- ret = status;
- goto exit;
- }
-
- /* second part of 2nd stage: rescan */
- // TODO: what should we do for non HEX images there?
- if (stage) {
- ctx.mode = skip_external;
-
- /* if needed, halt the CPU while we overwrite the 1st stage loader */
- if (cpucs_addr && !ezusb_cpucs(device, cpucs_addr, false))
- {
- ret = -1;
- goto exit;
- }
-
- /* at least write the interrupt vectors (at 0x0000) for reset! */
- rewind(image);
- if (verbose)
- logerror("2nd stage: write on-chip memory\n");
- status = parse_ihex(image, &ctx, is_external, ram_poke);
- if (status < 0) {
- logerror("unable to completely upload %s\n", path);
- ret = status;
- goto exit;
- }
- }
-
- if (verbose && (ctx.count != 0)) {
- logerror("... WROTE: %d bytes, %d segments, avg %d\n",
- (int)ctx.total, (int)ctx.count, (int)(ctx.total/ctx.count));
- }
-
- /* if required, reset the CPU so it runs what we just uploaded */
- if (cpucs_addr && !ezusb_cpucs(device, cpucs_addr, true))
- ret = -1;
-
-exit:
- fclose(image);
- return ret;
-}
projects / rtmpclient.git / blobdiff