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Samples: Add FX3 firmware upload support for fxload

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This commit is contained in:
Federico Manzan 2013-03-10 21:00:00 +00:00 • committed by Pete Batard
parent 0debd22baa
commit b74b7f7390
4 changed files with 114 additions and 7 deletions
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101
examples/ezusb.c
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@ -3,6 +3,7 @@
* 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
@ -141,6 +142,29 @@ static int ezusb_write(libusb_device_handle *device, const char *label,
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)
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 != 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.
@ -502,6 +526,80 @@ static int ram_poke(void *context, uint32_t addr, bool external,
return rc;
}
/*
* Load an Cypress Image file into target RAM.
* The file is assumed to be in Cypress IMG format.
*/
int fx3_load_ram(libusb_device_handle *device, const char *path)
{
unsigned int dCheckSum, dExpectedCheckSum, dAddress, i, dLen, dLength;
unsigned short wSignature;
unsigned int dImageBuf[512 * 1024];
unsigned char *bBuf, rBuf[4096];
FILE *image;
image = fopen(path, "rb");
if (image == NULL) {
logerror("%s: unable to open for input.\n", path);
return -2;
} else if (verbose)
logerror("open firmware image %s for RAM upload\n", path);
fread(&wSignature, 1, 2, image); // read signature bytes
if (wSignature != 0x5943) { // check CY signature byte
logerror("Invalid image");
return -3;
}
fread(&i, 2, 1, image); // skip 2 dummy bytes
dCheckSum = 0;
while (1) {
fread(&dLength, 4, 1, image); // read dLength
fread(&dAddress, 4, 1, image); // read dAddress
if (dLength == 0)
break; // done
// read sections
fread(dImageBuf, 4, dLength, image);
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;
ezusb_write(device, "Write firmware", RW_INTERNAL, dAddress, bBuf, dLen);
ezusb_read(device, "Read firmware", RW_INTERNAL, dAddress, rBuf, dLen);
// Verify data: rBuf with bBuf
for (i = 0; i < dLen; i++) {
if (rBuf[i] != bBuf[i]) {
logerror("Fail to verify image");
return -3;
}
}
dLength -= dLen;
bBuf += dLen;
dAddress += dLen;
}
}
// read pre-computed checksum data
fread(&dExpectedCheckSum, 4, 1, image);
if (dCheckSum != dExpectedCheckSum) {
logerror("Fail to boot due to checksum error\n");
return -4;
}
// transfer execution to Program Entry
ezusb_write(device, "Jump command", RW_INTERNAL, dAddress, NULL, 0);
logerror("Done!\n");
return 0;
}
/*
* Load a firmware file into target RAM. device is the open libusbx
* device, and the path is the name of the source file. Open the file,
@ -525,6 +623,9 @@ int ezusb_load_ram(libusb_device_handle *device, const char *path, int fx_type,
int status;
uint8_t iic_header[8] = { 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);