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Add support for Xilinx parallel III (DLC5) programing cable

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The rayer_spi driver defaults to the RayeR cable, but selecting other
predefined pin layouts with the type= parameter is possible:
flashrom -p rayer_spi:type=xilinx

Corresponding to flashrom svn r1437.

Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
Acked-by: Stefan Tauner <stefan.tauner@alumni.tuwien.ac.at>
This commit is contained in:
Carl-Daniel Hailfinger 2011-09-12 06:17:06 +00:00
parent 1d947633b6
commit ae418d87b2
2 changed files with 76 additions and 21 deletions
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22
flashrom.8
View File

@ -210,8 +210,8 @@ atmegaXXu2-flasher by Stefan Tauner."
.sp
.BR "* dediprog" " (for SPI flash ROMs attached to a Dediprog SF100)"
.sp
.BR "* rayer_spi" " (for SPI flash ROMs attached to a RayeR parport \
based programmer)"
.BR "* rayer_spi" " (for SPI flash ROMs attached to a RayeR parport "
or Xilinx DLC5 compatible cable)
.sp
.BR "* nicintel_spi" " (for SPI flash ROMs on Intel Gigabit network cards)"
.sp
@ -512,8 +512,22 @@ syntax where
is base I/O port address of the parallel port, which must be a multiple of
four. Make sure to not forget the "0x" prefix for hexadecimal port addresses.
.sp
More information about the hardware is available at
.BR http://rayer.ic.cz/elektro/spipgm.htm .
The default cable type is the RayeR cable. You can use the optional
.B type
parameter to specify the cable type with the
.sp
.B " flashrom \-p rayer_spi:type=model"
.sp
syntax where
.B model
can be
.BR rayer " for the RayeR cable or " xilinx " for the Xilinx Parallel Cable III
(DLC 5).
.sp
More information about the RayeR hardware is available at
.BR "http://rayer.ic.cz/elektro/spipgm.htm " .
The schematic of the Xilinx DLC 5 was published at
.BR "http://www.xilinx.com/itp/xilinx4/data/docs/pac/appendixb.html " .
.TP
.BR "ogp_spi " programmer
The flash ROM chip to access must be specified with the

75
rayer_spi.c
View File

@ -31,18 +31,25 @@
#if defined(__i386__) || defined(__x86_64__)
#include <stdlib.h>
#include <string.h>
#include "flash.h"
#include "programmer.h"
enum rayer_type {
TYPE_RAYER,
TYPE_XILINX_DLC5,
};
/* We have two sets of pins, out and in. The numbers for both sets are
* independent and are bitshift values, not real pin numbers.
* Default settings are for the the RayeR hardware.
*/
/* Pins for master->slave direction */
#define SPI_CS_PIN 5
#define SPI_SCK_PIN 6
#define SPI_MOSI_PIN 7
static int rayer_cs_bit = 5;
static int rayer_sck_bit = 6;
static int rayer_mosi_bit = 7;
/* Pins for slave->master direction */
#define SPI_MISO_PIN 6
static int rayer_miso_bit = 6;
static uint16_t lpt_iobase;
@ -51,22 +58,22 @@ static uint8_t lpt_outbyte;
static void rayer_bitbang_set_cs(int val)
{
lpt_outbyte &= ~(1 << SPI_CS_PIN);
lpt_outbyte |= (val << SPI_CS_PIN);
lpt_outbyte &= ~(1 << rayer_cs_bit);
lpt_outbyte |= (val << rayer_cs_bit);
OUTB(lpt_outbyte, lpt_iobase);
}
static void rayer_bitbang_set_sck(int val)
{
lpt_outbyte &= ~(1 << SPI_SCK_PIN);
lpt_outbyte |= (val << SPI_SCK_PIN);
lpt_outbyte &= ~(1 << rayer_sck_bit);
lpt_outbyte |= (val << rayer_sck_bit);
OUTB(lpt_outbyte, lpt_iobase);
}
static void rayer_bitbang_set_mosi(int val)
{
lpt_outbyte &= ~(1 << SPI_MOSI_PIN);
lpt_outbyte |= (val << SPI_MOSI_PIN);
lpt_outbyte &= ~(1 << rayer_mosi_bit);
lpt_outbyte |= (val << rayer_mosi_bit);
OUTB(lpt_outbyte, lpt_iobase);
}
@ -75,7 +82,7 @@ static int rayer_bitbang_get_miso(void)
uint8_t tmp;
tmp = INB(lpt_iobase + 1);
tmp = (tmp >> SPI_MISO_PIN) & 0x1;
tmp = (tmp >> rayer_miso_bit) & 0x1;
return tmp;
}
@ -89,14 +96,15 @@ static const struct bitbang_spi_master bitbang_spi_master_rayer = {
int rayer_spi_init(void)
{
char *portpos = NULL;
char *arg = NULL;
enum rayer_type rayer_type = TYPE_RAYER;
/* Non-default port requested? */
portpos = extract_programmer_param("iobase");
if (portpos) {
arg = extract_programmer_param("iobase");
if (arg) {
char *endptr = NULL;
unsigned long tmp;
tmp = strtoul(portpos, &endptr, 0);
tmp = strtoul(arg, &endptr, 0);
/* Port 0, port >0x10000, unaligned ports and garbage strings
* are rejected.
*/
@ -109,7 +117,7 @@ int rayer_spi_init(void)
msg_perr("Error: iobase= specified, but the I/O base "
"given was invalid.\nIt must be a multiple of "
"0x4 and lie between 0x100 and 0xfffc.\n");
free(portpos);
free(arg);
return 1;
} else {
lpt_iobase = (uint16_t)tmp;
@ -120,11 +128,44 @@ int rayer_spi_init(void)
/* Pick a default value for the I/O base. */
lpt_iobase = 0x378;
}
free(portpos);
free(arg);
msg_pdbg("Using address 0x%x as I/O base for parallel port access.\n",
lpt_iobase);
arg = extract_programmer_param("type");
if (arg) {
if (!strcasecmp(arg, "rayer")) {
rayer_type = TYPE_RAYER;
} else if (!strcasecmp(arg, "xilinx")) {
rayer_type = TYPE_XILINX_DLC5;
} else {
msg_perr("Error: Invalid device type specified.\n");
free(arg);
return 1;
}
}
free(arg);
switch (rayer_type) {
case TYPE_RAYER:
msg_pdbg("Using RayeR SPIPGM pinout.\n");
/* Bits for master->slave direction */
rayer_cs_bit = 5;
rayer_sck_bit = 6;
rayer_mosi_bit = 7;
/* Bits for slave->master direction */
rayer_miso_bit = 6;
break;
case TYPE_XILINX_DLC5:
msg_pdbg("Using Xilinx Parallel Cable III (DLC 5) pinout.\n");
/* Bits for master->slave direction */
rayer_cs_bit = 2;
rayer_sck_bit = 1;
rayer_mosi_bit = 0;
/* Bits for slave->master direction */
rayer_miso_bit = 4;
}
get_io_perms();
/* Get the initial value before writing to any line. */