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Add support for AJAWe to pony_spi
http://www.ajawe.pl/ajawe0208.htm http://www.ajawe.pl/files/0208_R_DOK.pdf Corresponding to flashrom svn r1590. First version was Signed-off-by: Virgil-Adrian Teaca <darkstarlinux@gmail.com> Refinements and general cleanup is 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:
Virgil-Adrian Teaca
Stefan Tauner
parent
af2cac0e13
commit
dabca20a1d
159
pony_spi.c
159
pony_spi.c
@ -17,8 +17,27 @@
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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/* Driver for the SI-Prog like hardware by Lancos.com.
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* See http://www.lancos.com/siprogsch.html for schematics and instructions.
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/* Driver for serial programmers compatible with SI-Prog or AJAWe.
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*
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* See http://www.lancos.com/siprogsch.html for SI-Prog schematics and instructions.
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* See http://www.ajawe.pl/ajawe0208.htm for AJAWe serial programmer documentation.
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*
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* Pin layout for SI-Prog-like hardware:
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*
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* MOSI <-------< DTR
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* MISO >-------> CTS
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* SCK <---+---< RTS
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* +---> DSR
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* CS# <-------< TXD
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*
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* and for the AJAWe serial programmer:
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*
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* MOSI <-------< DTR
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* MISO >-------> CTS
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* SCK <-------< RTS
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* CS# <-------< TXD
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*
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* DCE >-------> DSR
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*/
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#include <stdlib.h>
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@ -28,55 +47,50 @@
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#include "flash.h"
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#include "programmer.h"
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/* We have:
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MOSI -----> DTR
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MISO -----> CTS
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SCK --+--> RTS
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+--> DSR
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CS# -----> TXD
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*/
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enum pony_type {
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TYPE_SI_PROG,
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TYPE_SERBANG,
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TYPE_AJAWE
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};
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/* The hardware programmer used. */
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static enum pony_type pony_type = TYPE_SI_PROG;
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/* Pins for master->slave direction */
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static int pony_negate_cs = 1;
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static int pony_negate_sck = 0;
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static int pony_negate_mosi = 0;
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/* Pins for slave->master direction */
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static int pony_negate_miso = 0;
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static void pony_bitbang_set_cs(int val)
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{
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if (pony_type == TYPE_SI_PROG)
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{
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/* CS# is negated by the SI-Prog programmer. */
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if (pony_negate_cs)
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val ^= 1;
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}
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sp_set_pin(PIN_TXD, val);
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}
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static void pony_bitbang_set_sck(int val)
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{
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if (pony_negate_sck)
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val ^= 1;
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sp_set_pin(PIN_RTS, val);
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}
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static void pony_bitbang_set_mosi(int val)
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{
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if (pony_negate_mosi)
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val ^= 1;
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sp_set_pin(PIN_DTR, val);
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}
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static int pony_bitbang_get_miso(void)
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{
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int tmp;
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int tmp = sp_get_pin(PIN_CTS);
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tmp = sp_get_pin(PIN_CTS);
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if (pony_type == TYPE_SERBANG)
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{
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/* MISO is negated by the SERBANG programmer. */
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if (pony_negate_miso)
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tmp ^= 1;
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}
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return tmp;
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}
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@ -91,15 +105,17 @@ static const struct bitbang_spi_master bitbang_spi_master_pony = {
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int pony_spi_init(void)
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{
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int i, data_out;
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char *arg = NULL;
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int i, data_in, data_out, have_device = 0;
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int have_prog = 1;
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enum pony_type type = TYPE_SI_PROG;
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char *name;
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int have_device = 0;
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int have_prog = 0;
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/* The parameter is on format "dev=/dev/device,type=serbang" */
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/* The parameter is in format "dev=/dev/device,type=serbang" */
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arg = extract_programmer_param("dev");
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if (arg && strlen(arg)) {
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sp_fd = sp_openserport( arg, 9600 );
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sp_fd = sp_openserport(arg, 9600);
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if (sp_fd < 0) {
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free(arg);
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return 1;
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@ -110,51 +126,88 @@ int pony_spi_init(void)
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if (!have_device) {
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msg_perr("Error: No valid device specified.\n"
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"Use flashrom -p pony_spi:dev=/dev/device\n");
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"Use flashrom -p pony_spi:dev=/dev/device[,type=name]\n");
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return 1;
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}
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return 1;
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}
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/* Register the shutdown callback. */
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if (register_shutdown(serialport_shutdown, NULL)) {
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return 1;
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}
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arg = extract_programmer_param("type");
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if (arg) {
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if (!strcasecmp( arg, "serbang")) {
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pony_type = TYPE_SERBANG;
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} else if (!strcasecmp( arg, "si_prog") ) {
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pony_type = TYPE_SI_PROG;
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} else {
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if (arg && !strcasecmp(arg, "serbang")) {
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type = TYPE_SERBANG;
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} else if (arg && !strcasecmp(arg, "si_prog")) {
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type = TYPE_SI_PROG;
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} else if (arg && !strcasecmp( arg, "ajawe")) {
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type = TYPE_AJAWE;
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} else if (arg && !strlen(arg)) {
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msg_perr("Error: Missing argument for programmer type.\n");
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free(arg);
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} else if (arg){
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msg_perr("Error: Invalid programmer type specified.\n");
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free(arg);
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return 1;
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}
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}
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free(arg);
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msg_pdbg("Using the %s programmer.\n", ((pony_type == TYPE_SI_PROG ) ? "SI-Prog" : "SERBANG"));
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/*
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* Detect if there is a SI-Prog compatible programmer connected.
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* Configure the serial port pins, depending on the used programmer.
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*/
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switch (type) {
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case TYPE_AJAWE:
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pony_negate_cs = 1;
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pony_negate_sck = 1;
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pony_negate_mosi = 1;
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pony_negate_miso = 1;
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name = "AJAWe";
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break;
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case TYPE_SERBANG:
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pony_negate_cs = 0;
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pony_negate_sck = 0;
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pony_negate_mosi = 0;
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pony_negate_miso = 1;
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name = "serbang";
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break;
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default:
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case TYPE_SI_PROG:
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pony_negate_cs = 1;
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pony_negate_sck = 0;
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pony_negate_mosi = 0;
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pony_negate_miso = 0;
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name = "SI-Prog";
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break;
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}
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msg_pdbg("Using %s programmer pinout.\n", name);
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/*
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* Detect if there is a compatible hardware programmer connected.
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*/
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pony_bitbang_set_cs(1);
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pony_bitbang_set_sck(1);
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pony_bitbang_set_mosi(1);
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/* We toggle SCK while we keep MOSI and CS# on. */
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for (i = 1; i <= 10; ++i) {
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switch (type) {
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case TYPE_AJAWE:
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have_prog = 1;
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break;
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case TYPE_SI_PROG:
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case TYPE_SERBANG:
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default:
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have_prog = 1;
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/* We toggle RTS/SCK a few times and see if DSR changes too. */
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for (i = 1; i <= 10; i++) {
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data_out = i & 1;
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sp_set_pin(PIN_RTS, data_out);
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programmer_delay( 1000 );
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data_in = sp_get_pin(PIN_DSR);
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programmer_delay(1000);
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if (data_out != data_in) {
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/* If DSR does not change, we are not connected to what we think */
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if (data_out != sp_get_pin(PIN_DSR)) {
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have_prog = 0;
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break;
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}
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}
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break;
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}
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if (!have_prog) {
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msg_perr( "No SI-Prog compatible hardware detected.\n" );
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msg_perr("No programmer compatible with %s detected.\n", name);
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return 1;
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}
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2
print.c
2
print.c
@ -520,7 +520,7 @@ void print_supported(void)
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msg_ginfo("\nSupported devices for the %s programmer:\n",
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programmer_table[PROGRAMMER_PONY_SPI].name);
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/* FIXME */
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msg_ginfo("SI-Prog and SERBANG serial port programmer\n");
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msg_ginfo("SI-Prog, serbang and AJAWe serial port programmers\n");
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#endif
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#if CONFIG_NICINTEL == 1
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msg_ginfo("\nSupported devices for the %s programmer:\n",
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