I found this in the Bus Pirate forum, apparently written by Patrick Georgi.
Patrick, do you want to add a signoff?
Index: flash.h
===================================================================
--- flash.h (Revision 916)
+++ flash.h (Arbeitskopie)
@@ -502,6 +502,7 @@
int buspirate_spi_shutdown(void);
int buspirate_spi_send_command(unsigned int writecnt, unsigned int readcnt,
const unsigned char *writearr, unsigned char *readarr);
int buspirate_spi_read(struct flashchip *flash, uint8_t *buf, int start, int
len);
+int buspirate_spi_write_256(struct flashchip *flash, uint8_t *buf);
/* dediprog.c */
int dediprog_init(void);
Index: buspirate_spi.c
===================================================================
--- buspirate_spi.c (Revision 916)
+++ buspirate_spi.c (Arbeitskopie)
@@ -316,4 +316,27 @@
return spi_read_chunked(flash, buf, start, len, 12);
}
-/* We could do 12-byte writes, but for now we use the generic 1-byte code. */
+int buspirate_spi_write_256(struct flashchip *flash, uint8_t *buf)
+{
+ int total_size = 1024 * flash->total_size;
+ int i;
+
+ msg_pdbg("total_size is %d\n", total_size);
+ for (i = 0; i < total_size; i += 12) {
+ int l, r;
+ if (i + 12 <= total_size)
+ l = 12;
+ else
+ l = total_size - i;
+
+ if ((r = spi_nbyte_program(i, &buf[i], l))) {
+ msg_perr("%s: write fail %d\n", __func__, r);
+ return 1;
+ }
+
+ while (spi_read_status_register() & JEDEC_RDSR_BIT_WIP)
+ /* loop */;
+ }
+
+ return 0;
+}
Index: spi.c
===================================================================
--- spi.c (Revision 916)
+++ spi.c (Arbeitskopie)
@@ -108,7 +108,7 @@
.command = buspirate_spi_send_command,
.multicommand = default_spi_send_multicommand,
.read = buspirate_spi_read,
- .write_256 = spi_chip_write_1,
+ .write_256 = buspirate_spi_write_256,
},
#endif
--
"I do consider assignment statements and pointer variables to be among
computer science's most valuable treasures."
-- Donald E. Knuth
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