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[ 826404 ] s3c4510 bus driver (without jedec.c fix)

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git-svn-id: https://urjtag.svn.sourceforge.net/svnroot/urjtag/trunk@680 b68d4a1b-bc3d-0410-92ed-d4ac073336b7
master
Kolja Waschk 17 years ago
parent 4bfab153b8
commit c0ef192b30
3 changed files with 158 additions and 65 deletions
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144
jtag/src/bus/s3c4510x.c
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@ -24,6 +24,11 @@
** Jiun-Shian Ho <asky@syncom.com.tw>,
** Copy from other bus drivers written by Marcel Telka <marcel@telka.sk>
**
** Krzysztof Blaszkowski <info@sysmikro.com.pl>
** - fixed bug with driving nWBE, nECS, nSDCS (for SDRAM),
** - fixed bug with preparing bus state after each chain_shift_data_registers().
** tested on "peek" command only (2003/10/07).
**
** @brief
** Bus driver for Samsung S3C4510X (ARM7TDMI) micro controller.
**
@ -59,6 +64,10 @@
#include "buses.h"
#ifndef DEBUG_LVL2
#define DEBUG_LVL2(x)
#endif
/** @brief Bus driver for Samsung S3C4510X */
typedef struct {
chain_t *chain;
@ -67,8 +76,12 @@ typedef struct {
signal_t *d[32]; /**< Data bus */
signal_t *nrcs[6]; /**< not ROM/SRAM/Flash Chip Select;
** Only using nRCS0. */
signal_t *necs[4];
signal_t *nsdcs[4];
signal_t *nwbe[4]; /**< not Write Byte Enable */
signal_t *noe; /**< not Output Enable */
int dbuswidth;
} bus_params_t;
#define CHAIN ((bus_params_t *) bus->params)->chain
@ -76,12 +89,14 @@ typedef struct {
#define A ((bus_params_t *) bus->params)->a
#define D ((bus_params_t *) bus->params)->d
#define nRCS ((bus_params_t *) bus->params)->nrcs
#define nECS ((bus_params_t *) bus->params)->necs
#define nSDCS ((bus_params_t *) bus->params)->nsdcs
#define nWBE ((bus_params_t *) bus->params)->nwbe
#define nOE ((bus_params_t *) bus->params)->noe
/** @brief Width of Data Bus. Detected by B0SIZE[1:0] */
unsigned char dbus_width = 16;
#define dbus_width ((bus_params_t *) bus->params)->dbuswidth
/** @brief Width of Data Bus. Detected by B0SIZE[1:0]
unsigned char dbus_width = 16; */
static void
@ -125,7 +140,7 @@ s3c4510_bus_printinfo( bus_t *bus )
for (i = 0; i < CHAIN->parts->len; i++)
if (PART == CHAIN->parts->parts[i])
break;
printf( _("Samsung S3C4510B compatible bus driver via BSR (JTAG part No. %d)\n"), i );
printf( _("Samsung S3C4510B compatibile bus driver via BSR (JTAG part No. %d) RCS0=%ubit\n"), i ,dbus_width );
}
static void
@ -135,28 +150,35 @@ s3c4510_bus_prepare( bus_t *bus )
chain_shift_instructions( CHAIN );
}
static void s3c4510_bus_setup_ctrl( bus_t *bus, int mode )
{
int k;
part_t *p = PART;
for (k = 0; k < 6; k++)
part_set_signal( p, nRCS[k], 1, (mode & (1 << k)) ? 1 : 0 );
for (k = 0; k < 4; k++)
part_set_signal( p, nECS[k], 1, 1 );
for (k = 0; k < 4; k++)
part_set_signal( p, nSDCS[k], 1, 1 );
for (k = 0; k < 4; k++)
part_set_signal( p, nWBE[k], 1, (mode & (1 << (k + 8))) ? 1 : 0 );
part_set_signal( p, nOE, 1, (mode & (1 << 16)) ? 1 : 0 );
}
static void
s3c4510_bus_read_start( bus_t *bus, uint32_t adr )
{
/* see Figure 4-19 in [1] */
part_t *p = PART;
chain_t *chain = CHAIN;
part_set_signal( p, nRCS[0], 1, 0 );
part_set_signal( p, nRCS[1], 1, 1 );
part_set_signal( p, nRCS[2], 1, 1 );
part_set_signal( p, nRCS[3], 1, 1 );
part_set_signal( p, nRCS[4], 1, 1 );
part_set_signal( p, nRCS[5], 1, 1 );
part_set_signal( p, nWBE[0], 1, 1 );
part_set_signal( p, nWBE[1], 1, 1 );
part_set_signal( p, nWBE[2], 1, 1 );
part_set_signal( p, nWBE[3], 1, 1 );
part_set_signal( p, nOE, 1, 0 );
s3c4510_bus_setup_ctrl( bus, 0x00fffe); /* nOE=0, nRCS0 =0 */
setup_address( bus, adr );
set_data_in( bus );
chain_shift_data_registers( chain, 0 );
}
@ -169,7 +191,9 @@ s3c4510_bus_read_next( bus_t *bus, uint32_t adr )
int i;
uint32_t d = 0;
s3c4510_bus_setup_ctrl( bus, 0x00fffe); /* nOE=0, nRCS0 =0 */
setup_address( bus, adr );
set_data_in( bus );
chain_shift_data_registers( chain, 1 );
for (i = 0; i < dbus_width; i++)
@ -187,17 +211,7 @@ s3c4510_bus_read_end( bus_t *bus )
int i;
uint32_t d = 0;
part_set_signal( p, nRCS[0], 1, 1 );
part_set_signal( p, nRCS[1], 1, 1 );
part_set_signal( p, nRCS[2], 1, 1 );
part_set_signal( p, nRCS[3], 1, 1 );
part_set_signal( p, nRCS[4], 1, 1 );
part_set_signal( p, nRCS[5], 1, 1 );
part_set_signal( p, nWBE[0], 1, 1 );
part_set_signal( p, nWBE[1], 1, 1 );
part_set_signal( p, nWBE[2], 1, 1 );
part_set_signal( p, nWBE[3], 1, 1 );
part_set_signal( p, nOE, 1, 1 );
s3c4510_bus_setup_ctrl( bus, 0x01ffff); /* nOE=1, nRCS0 =1 */
chain_shift_data_registers( chain, 1 );
for (i = 0; i < dbus_width; i++)
@ -218,42 +232,46 @@ s3c4510_bus_read( bus_t *bus, uint32_t adr )
** @brief
** ROM/SRAM/FlashPage Write Access Timing
*/
static void
s3c4510_bus_write( bus_t *bus, uint32_t adr, uint32_t data )
{
/* see Figure 4-21 in [1] */
part_t *p = PART;
chain_t *chain = CHAIN;
part_set_signal( p, nRCS[0], 1, 0 );
part_set_signal( p, nRCS[1], 1, 1 );
part_set_signal( p, nRCS[2], 1, 1 );
part_set_signal( p, nRCS[3], 1, 1 );
part_set_signal( p, nRCS[4], 1, 1 );
part_set_signal( p, nRCS[5], 1, 1 );
part_set_signal( p, nWBE[0], 1, 1 );
part_set_signal( p, nWBE[1], 1, 1 );
part_set_signal( p, nWBE[2], 1, 1 );
part_set_signal( p, nWBE[3], 1, 1 );
part_set_signal( p, nOE, 1, 1 );
s3c4510_bus_setup_ctrl( bus, 0x01fffe); /* nOE=1, nRCS0 =0 */
setup_address( bus, adr );
setup_data( bus, data );
chain_shift_data_registers( chain, 0 );
part_set_signal( p, nWBE[0], 1, 0 );
switch (dbus_width)
{
default:
case 8:
s3c4510_bus_setup_ctrl( bus, 0x01fefe); /* nOE=1, nRCS0 =0, nWBE0=0 */
break;
case 16:
s3c4510_bus_setup_ctrl( bus, 0x01fcfe); /* nOE=1, nRCS0 =0, nWBE0-1=0 */
break;
case 32:
s3c4510_bus_setup_ctrl( bus, 0x01f0fe); /* nOE=1, nRCS0 =0, nWBE0-3=0 */
break;
}
setup_address( bus, adr );
setup_data( bus, data );
chain_shift_data_registers( chain, 0 );
part_set_signal( p, nWBE[0], 1, 1 );
part_set_signal( p, nRCS[0], 1, 1 );
part_set_signal( p, nRCS[1], 1, 1 );
part_set_signal( p, nRCS[2], 1, 1 );
part_set_signal( p, nRCS[3], 1, 1 );
part_set_signal( p, nRCS[4], 1, 1 );
part_set_signal( p, nRCS[5], 1, 1 );
s3c4510_bus_setup_ctrl( bus, 0x01ffff); /* nOE=1, nRCS0 =1 */
chain_shift_data_registers( chain, 0 );
DEBUG_LVL2( printf("bus_write %08x @ %08x\n", data, adr); )
}
static int
s3c4510_bus_area( bus_t *bus, uint32_t adr, bus_area_t *area )
{
@ -329,6 +347,8 @@ s3c4510_bus_new( void )
return NULL;
}
dbus_width = 16;
CHAIN = chain;
PART = chain->parts->parts[chain->active_part];
@ -359,10 +379,29 @@ s3c4510_bus_new( void )
break;
}
}
for (i = 0; i < 4; i++) {
sprintf( buff, "nECS%d", i );
nECS[i] = part_find_signal( PART, buff );
if (!nECS[i]) {
printf( _("signal '%s' not found\n"), buff );
failed = 1;
break;
}
}
for (i = 0; i < 4; i++) {
sprintf( buff, "nRAS%d", i ); /* those are nSDCS for SDRAMs only */
nSDCS[i] = part_find_signal( PART, buff );
if (!nSDCS[i]) {
printf( _("signal '%s' not found\n"), buff );
failed = 1;
break;
}
}
for (i = 0; i < 4; i++) {
sprintf( buff, "nWBE%d", i );
nWBE[i] = part_find_signal( PART, "nWBE" );
if (!nWBE) {
nWBE[i] = part_find_signal( PART, buff );
if (!nWBE[i]) {
printf( _("signal '%s' not found\n"), buff );
failed = 1;
break;
@ -384,6 +423,7 @@ s3c4510_bus_new( void )
}
/*=============================================================================
**
** CVS Log

50
jtag/src/cmd/peekpoke.c
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@ -35,22 +35,40 @@ static int
cmd_peek_run( char *params[] )
{
uint32_t adr, val;
int pars, j = 1, bw;
bus_area_t area;
/* bus_t * bus = part_get_active_bus(chain); */
if (cmd_params( params ) != 2)
if ( (pars = cmd_params( params )) < 2)
return -1;
if (!bus) {
printf( _("Error: Bus driver missing.\n") );
return 1;
}
if (cmd_get_number( params[1], &adr ))
do {
if (cmd_get_number( params[j], &adr ))
return -1;
bus_prepare( bus );
bus_area( bus, adr, &area );
val = bus_read( bus, adr );
printf( _("bus_read(0x%08x) = 0x%08X (%i)\n"), adr, val, val );
switch ( area.width )
{
case 8:
val &= 0xff;
printf( _("bus_read(0x%08x) = 0x%02X (%i)\n"), adr, val, val );
break;
case 16:
val &= 0xffff;
printf( _("bus_read(0x%08x) = 0x%04X (%i)\n"), adr, val, val );
break;
default:
printf( _("bus_read(0x%08x) = 0x%08X (%i)\n"), adr, val, val );
}
} while (++j != pars);
return 1;
}
@ -80,8 +98,11 @@ static int
cmd_poke_run( char *params[] )
{
uint32_t adr, val;
bus_area_t area;
/*bus_t * bus = part_get_active_bus(chain);*/
int k = 1, pars = cmd_params( params );
if (cmd_params( params ) != 3)
if ( pars < 3 || !(pars & 1))
return -1;
if (!bus) {
@ -89,11 +110,16 @@ cmd_poke_run( char *params[] )
return 1;
}
if (cmd_get_number( params[1], &adr ) || cmd_get_number( params[2], &val ))
return -1;
bus_prepare( bus );
bus_write( bus, adr, val );
bus_prepare( bus );
while ( k < pars) {
if (cmd_get_number( params[k], &adr ) || cmd_get_number( params[k+1], &val ))
return -1;
bus_area( bus, adr, &area );
bus_write( bus, adr, val );
k += 2;
}
return 1;
}
@ -102,7 +128,7 @@ static void
cmd_poke_help( void )
{
printf( _(
"Usage: %s ADDR VAL\n"
"Usage: %s ADDR VAL [ADDR VAL] ... \n"
"Write a single word (bus width size).\n"
"\n"
"ADDR address to write\n"

29
jtag/src/jtag.c
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@ -177,13 +177,40 @@ jtag_parse_line( char *line )
return r;
}
static int jtag_readline_multiple_commands_support(char * line) /* multiple commands should be separated with '::' */
{
int r;
char *nextcmd = line;
if (!line || !(strlen( line ) > 0))
return 1;
do {
line = nextcmd;
nextcmd = strstr(nextcmd, "::"); /* :: to not confuse ms-dos users ;-) */
if (nextcmd) {
*nextcmd++ = 0;
++nextcmd;
while (*line == ':') ++line;
}
r = jtag_parse_line( line );
} while (nextcmd && r);
return r;
}
static void
jtag_readline_loop( const char *prompt )
{
char *line = NULL;
/* Iterate */
while (jtag_parse_line( line )) {
while (jtag_readline_multiple_commands_support( line )) {
free( line );
/* Read a line from the terminal */

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