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rayer_spi: Improve support for different pinouts

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Create a list of programmer types with names, test state and linked layouts.
This list could be listed with flashrom -L in follow-up patches.

Handle a bit in status register that is inverted, this will be used
in different future programmer types.

Corresponding to flashrom svn r1753.

Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Tested-by: Maksim Kuleshov <mmcx@mail.ru>
Signed-off-by: Stefan Tauner <stefan.tauner@alumni.tuwien.ac.at>
Acked-by: Stefan Tauner <stefan.tauner@alumni.tuwien.ac.at>
This commit is contained in:
Kyösti Mälkki
2013-10-02 01:21:45 +00:00
committed by Stefan Tauner
parent 8268fdb902
commit 8b1bdf19b0
2 changed files with 67 additions and 54 deletions
Download Patch File Download Diff File Expand all files Collapse all files

7
flashrom.8.tmpl
View File

@@ -208,8 +208,7 @@ 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 "
or Xilinx DLC5 compatible cable)
.BR "* rayer_spi" " (for SPI flash ROMs attached to a parallel port by one of various cable types)"
.sp
.BR "* pony_spi" " (for SPI flash ROMs attached to a SI-Prog serial port "
bitbanging adapter)
@@ -766,9 +765,9 @@ can be
More information about the RayeR hardware is available at
.nh
.BR "http://rayer.ic.cz/elektro/spipgm.htm " .
The schematic of the Xilinx DLC 5 was published at
The schematic of the Xilinx DLC 5 was published in
.nh
.BR "http://www.xilinx.com/itp/xilinx4/data/docs/pac/appendixb.html " .
.BR "http://www.xilinx.com/support/documentation/user_guides/xtp029.pdf " .
.SS
.BR "pony_spi " programmer
The serial port (like /dev/ttyS0, /dev/ttyUSB0 on Linux or COM3 on windows) is

114
rayer_spi.c
View File

@@ -17,11 +17,9 @@
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
/* Driver for the SPIPGM hardware by "RayeR" Martin Rehak.
* See http://rayer.ic.cz/elektro/spipgm.htm for schematics and instructions.
*/
/* This driver uses non-portable direct I/O port accesses which won't work on
/* Driver for various LPT adapters.
*
* This driver uses non-portable direct I/O port accesses which won't work on
* any non-x86 platform, and even on x86 there is a high chance there will be
* collisions with any loaded parallel port drivers.
* The big advantage of direct port I/O is OS independence and speed because
@@ -37,21 +35,48 @@
#include "programmer.h"
#include "hwaccess.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 RayeR hardware.
*/
/* Pins for master->slave direction */
static int rayer_cs_bit = 5;
static int rayer_sck_bit = 6;
static int rayer_mosi_bit = 7;
/* Pins for slave->master direction */
static int rayer_miso_bit = 6;
struct rayer_programmer {
const char *type;
const enum test_state status;
const char *description;
const void *dev_data;
};
struct rayer_pinout {
uint8_t cs_bit;
uint8_t sck_bit;
uint8_t mosi_bit;
uint8_t miso_bit;
void (*preinit)(const void *);
int (*shutdown)(void *);
};
static const struct rayer_pinout rayer_spipgm = {
.cs_bit = 5,
.sck_bit = 6,
.mosi_bit = 7,
.miso_bit = 6,
};
static const struct rayer_pinout xilinx_dlc5 = {
.cs_bit = 2,
.sck_bit = 1,
.mosi_bit = 0,
.miso_bit = 4,
};
static const struct rayer_programmer rayer_spi_types[] = {
{"rayer", NT, "RayeR SPIPGM", &rayer_spipgm},
{"xilinx", NT, "Xilinx Parallel Cable III (DLC 5)", &xilinx_dlc5},
{0},
};
static const struct rayer_pinout *pinout = NULL;
static uint16_t lpt_iobase;
@@ -60,22 +85,22 @@ static uint8_t lpt_outbyte;
static void rayer_bitbang_set_cs(int val)
{
lpt_outbyte &= ~(1 << rayer_cs_bit);
lpt_outbyte |= (val << rayer_cs_bit);
lpt_outbyte &= ~(1 << pinout->cs_bit);
lpt_outbyte |= (val << pinout->cs_bit);
OUTB(lpt_outbyte, lpt_iobase);
}
static void rayer_bitbang_set_sck(int val)
{
lpt_outbyte &= ~(1 << rayer_sck_bit);
lpt_outbyte |= (val << rayer_sck_bit);
lpt_outbyte &= ~(1 << pinout->sck_bit);
lpt_outbyte |= (val << pinout->sck_bit);
OUTB(lpt_outbyte, lpt_iobase);
}
static void rayer_bitbang_set_mosi(int val)
{
lpt_outbyte &= ~(1 << rayer_mosi_bit);
lpt_outbyte |= (val << rayer_mosi_bit);
lpt_outbyte &= ~(1 << pinout->mosi_bit);
lpt_outbyte |= (val << pinout->mosi_bit);
OUTB(lpt_outbyte, lpt_iobase);
}
@@ -83,8 +108,8 @@ static int rayer_bitbang_get_miso(void)
{
uint8_t tmp;
tmp = INB(lpt_iobase + 1);
tmp = (tmp >> rayer_miso_bit) & 0x1;
tmp = INB(lpt_iobase + 1) ^ 0x80; // bit.7 inverted
tmp = (tmp >> pinout->miso_bit) & 0x1;
return tmp;
}
@@ -99,8 +124,8 @@ static const struct bitbang_spi_master bitbang_spi_master_rayer = {
int rayer_spi_init(void)
{
const struct rayer_programmer *prog = rayer_spi_types;
char *arg = NULL;
enum rayer_type rayer_type = TYPE_RAYER;
/* Non-default port requested? */
arg = extract_programmer_param("iobase");
@@ -138,36 +163,20 @@ int rayer_spi_init(void)
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 {
for (; prog->type != NULL; prog++) {
if (strcasecmp(arg, prog->type) == 0) {
break;
}
}
if (prog->type == NULL) {
msg_perr("Error: Invalid device type specified.\n");
free(arg);
return 1;
}
free(arg);
}
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;
}
msg_pinfo("Using %s pinout.\n", prog->description);
pinout = (struct rayer_pinout *)prog->dev_data;
if (rget_io_perms())
return 1;
@@ -175,6 +184,11 @@ int rayer_spi_init(void)
/* Get the initial value before writing to any line. */
lpt_outbyte = INB(lpt_iobase);
if (pinout->shutdown)
register_shutdown(pinout->shutdown, (void*)pinout);
if (pinout->preinit)
pinout->preinit(pinout);
if (bitbang_spi_init(&bitbang_spi_master_rayer))
return 1;