[flashrom] [PATCH] Enable Dediprog SF100 programmers with FW 5.5.1
Pablo Cases
pablo.cases at flatfrog.com
Thu Jul 31 13:51:18 CEST 2014
This patch enables Dediprog SF100 programmers with FW 5.5.1 to work properly with flashrom.
The following functionality has been fixed and verified on a W25Q64.V flash chip. All fixes relate to changes in the USB commands issued to the SF100 programmer:
* chip discovery (flashrom could not read out the ManufacturerID and DeviceID fields properly, got parts of the devicestring instead)
* chip data readout (SF100 issued SPI Fast Read from address 0xF30000 instead of 0x0)
* chip data write (SF100 issued SPI Page Program to address 0xF30000 instead of 0x0)
* chip erase (verification failed as a consequence of that chip data readout was problematic)
* SF100 LED management (LEDs could be turned on but not turned off)
Signed-off-by: Pablo Cases <pablo.cases at flatfrog.com>
Index: dediprog.c
===================================================================
--- dediprog.c (revision 1832)
+++ dediprog.c (working copy)
@@ -101,8 +101,13 @@
target_leds = leds;
}
- ret = usb_control_msg(dediprog_handle, 0x42, 0x07, 0x09, target_leds,
+ if (dediprog_firmwareversion >= FIRMWARE_VERSION(5,5,1))
+ ret = usb_control_msg(dediprog_handle, 0x42, 0x07, (target_leds << 8) | 0x09, 0x0,
NULL, 0x0, DEFAULT_TIMEOUT);
+ else
+ ret = usb_control_msg(dediprog_handle, 0x42, 0x07, 0x09, target_leds,
+ NULL, 0x0, DEFAULT_TIMEOUT);
+
if (ret != 0x0) {
msg_perr("Command Set LED 0x%x failed (%s)!\n",
leds, usb_strerror());
@@ -216,8 +221,22 @@
const char count_and_chunk[] = {count & 0xff,
(count >> 8) & 0xff,
chunksize & 0xff,
- (chunksize >> 8) & 0xff};
+ (chunksize >> 8) & 0xff,
+ 0xFF, 0,0,0,0,0};
+ unsigned int count_and_chunk_size;
+ /* Reverse engineering note:
+ * ========================
+ * Omitting the {0xFF, 0,0,0,0,0} appendage of SF100 FW 5.5.1
+ * results in SF100 to incorrectly issue 0x0B (Fast Read) command with
+ * start at SPI address 0xF30000 instead of the expected address 0x0.
+ * (On a 8MiB W25Q64.V chip this wraps around to physical address 0x730000)
+ */
+ if (dediprog_firmwareversion >= FIRMWARE_VERSION(5,5,1))
+ count_and_chunk_size = 10;
+ else
+ count_and_chunk_size = 4;
+
if ((start % chunksize) || (len % chunksize)) {
msg_perr("%s: Unaligned start=%i, len=%i! Please report a bug "
"at flashrom at flashrom.org\n", __func__, start, len);
@@ -232,8 +251,8 @@
*/
ret = usb_control_msg(dediprog_handle, 0x42, 0x20, start % 0x10000,
start / 0x10000, (char *)count_and_chunk,
- sizeof(count_and_chunk), DEFAULT_TIMEOUT);
- if (ret != sizeof(count_and_chunk)) {
+ count_and_chunk_size, DEFAULT_TIMEOUT);
+ if (ret != count_and_chunk_size) {
msg_perr("Command Read SPI Bulk failed, %i %s!\n", ret,
usb_strerror());
return 1;
@@ -316,9 +335,27 @@
* space in a USB bulk transfer must be filled with 0xff padding.
*/
const unsigned int count = len / chunksize;
- const char count_and_cmd[] = {count & 0xff, (count >> 8) & 0xff, 0x00, dedi_spi_cmd};
+ const char count_and_cmd[] = {count & 0xff, (count >> 8) & 0xff, 0x00, dedi_spi_cmd, 0xFF, 0,0,0,0,0};
+ unsigned int count_and_cmd_size;
char usbbuf[512];
-
+
+ /* Reverse engineering note:
+ * ========================
+ * Omitting the {0xFF, 0,0,0,0,0} appendage of SF100 FW 5.5.1
+ * results in SF100 to incorrectly issue 0x02 (Page Program) command with
+ * start at SPI address 0xF30000 instead of the expected address 0x0.
+ * (On a 8MiB W25Q64.V chip this wraps around to physical address 0x730000)
+ * Issuing a single spi_bulk_write() command with this appendage will
+ * correct the addressing so that all further spi_bulk_write() commands
+ * (with or without the appendage) will start at SPI address 0x0.
+ * Only a power cycle of the SF100 will reset the behavior
+ * (i.e. reintroduce the error).
+ */
+ if (dediprog_firmwareversion >= FIRMWARE_VERSION(5,5,1))
+ count_and_cmd_size = 10;
+ else
+ count_and_cmd_size = 4;
+
/*
* We should change this check to
* chunksize > 512
@@ -343,8 +380,8 @@
* SPI side.
*/
ret = usb_control_msg(dediprog_handle, 0x42, 0x30, start % 0x10000, start / 0x10000,
- (char *)count_and_cmd, sizeof(count_and_cmd), DEFAULT_TIMEOUT);
- if (ret != sizeof(count_and_cmd)) {
+ (char *)count_and_cmd, count_and_cmd_size, DEFAULT_TIMEOUT);
+ if (ret != count_and_cmd_size) {
msg_perr("Command Write SPI Bulk failed, %i %s!\n", ret,
usb_strerror());
return 1;
@@ -447,10 +484,29 @@
msg_perr("Untested readcnt=%i, aborting.\n", readcnt);
return 1;
}
-
- ret = usb_control_msg(dediprog_handle, 0x42, 0x1, 0xff,
- readcnt ? 0x1 : 0x0, (char *)writearr, writecnt,
- DEFAULT_TIMEOUT);
+
+ if (dediprog_firmwareversion >= FIRMWARE_VERSION(5,5,1))
+ if (writecnt == 1 &&
+ (*writearr == 0x6 || // Write Enable
+ *writearr == 0x60 || *writearr == 0xc7 ||// Chip Erase
+ *writearr == 0x52 || *writearr == 0xd8 ||// Block Erase
+ *writearr == 0x20)) // Sector Erase
+ /* These commands are treated differently otherwise
+ * Read Status Register-1 (05h) will return incorrect
+ * results for WEL and WIP bits
+ * (at least on Winbond W25Q64BV Flash)
+ */
+ ret = usb_control_msg(dediprog_handle, 0x42, 0x1, 0x0,
+ 0x0, (char *)writearr, writecnt,
+ DEFAULT_TIMEOUT);
+ else
+ ret = usb_control_msg(dediprog_handle, 0x42, 0x1, 0x1,
+ 0x0, (char *)writearr, writecnt,
+ DEFAULT_TIMEOUT);
+ else
+ ret = usb_control_msg(dediprog_handle, 0x42, 0x1, 0xff,
+ readcnt ? 0x1 : 0x0, (char *)writearr, writecnt,
+ DEFAULT_TIMEOUT);
if (ret != writecnt) {
msg_perr("Send SPI failed, expected %i, got %i %s!\n",
writecnt, ret, usb_strerror());
@@ -459,8 +515,13 @@
if (!readcnt)
return 0;
memset(readarr, 0, readcnt);
- ret = usb_control_msg(dediprog_handle, 0xc2, 0x01, 0xbb8, 0x0000,
- (char *)readarr, readcnt, DEFAULT_TIMEOUT);
+
+ if (dediprog_firmwareversion >= FIRMWARE_VERSION(5,5,1))
+ ret = usb_control_msg(dediprog_handle, 0xc2, 0x1, 0x1, 0x0,
+ (char *)readarr, readcnt, DEFAULT_TIMEOUT);
+ else
+ ret = usb_control_msg(dediprog_handle, 0xc2, 0x1, 0xbb8, 0x0000,
+ (char *)readarr, readcnt, DEFAULT_TIMEOUT);
if (ret != readcnt) {
msg_perr("Receive SPI failed, expected %i, got %i %s!\n",
readcnt, ret, usb_strerror());
@@ -485,6 +546,12 @@
" String!\n");
return 1;
}
+ /* Reverse engineering note:
+ * ========================
+ * Dediprog Software SF6.0.4.33 application sends the devicestring
+ * command with wValue and wIndex values of 0x0 instead of 0xFF.
+ * Both commands yield the same result, so nothing is changed for now.
+ */
/* Command Receive Device String. */
memset(buf, 0, sizeof(buf));
ret = usb_control_msg(dediprog_handle, 0xc2, 0x8, 0xff, 0xff, buf,
----------------------------------------------------------------------
Pablo Cases, M.Sc.
Senior Software Engineer
FlatFrog Laboratories AB
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