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Support the MUX parameter on the mpc5200 local bus for hardware (Jon Smirl)

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git-svn-id: https://urjtag.svn.sourceforge.net/svnroot/urjtag/trunk@1462 b68d4a1b-bc3d-0410-92ed-d4ac073336b7
master
Arnim Läuger 16 years ago
parent b881cb564a
commit 1491071e98
3 changed files with 94 additions and 33 deletions
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5
jtag/ChangeLog
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@ -1,3 +1,8 @@
2009-03-26 Arnim Laeuger <arniml>
* src/bus/mpc5200.c, THANKS: Support the MUX parameter on the mpc5200
local bus for hardware (Jon Smirl)
2009-03-23 Arnim Laeuger <arniml>
* src/cmd/pod.c: show signal names for TRST and RESET

1
jtag/THANKS
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@ -70,6 +70,7 @@ Markus Schneider
Holger Schurig
Robert Sedevici
Stanislav Sinyagin
Jon Smirl
Juergen Stuber
Hartley Sweeten
Marcel Telka

121
jtag/src/bus/mpc5200.c
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@ -41,11 +41,9 @@
#include "generic_bus.h"
#define LPC_NUM_CS 6
#define LPC_NUM_AD 24
#define LPC_NUM_D 8
#define LPC_ADDR_TO_CS(a) (a >> LPC_NUM_AD)
#define LPC_ADDR_SIZE ( ( 0x00000001 << LPC_NUM_AD ) * LPC_NUM_CS )
#define LPC_NUM_AD 32
#define LPC_ADDR_TO_CS(a) (a >> bp->lpc_num_ad)
#define LPC_ADDR_SIZE ( ( (unsigned long long)1 << bp->lpc_num_ad ) * LPC_NUM_CS )
typedef struct {
uint32_t last_adr;
@ -53,8 +51,11 @@ typedef struct {
signal_t *ncs[LPC_NUM_CS];
signal_t *nwe;
signal_t *noe;
signal_t *d[LPC_NUM_D];
signal_t *ata_iso;
signal_t *nale;
int muxed;
int lpc_num_ad;
int lpc_num_d;
} bus_params_t;
#define LAST_ADR ((bus_params_t *) bus->params)->last_adr
@ -62,7 +63,7 @@ typedef struct {
#define nCS ((bus_params_t *) bus->params)->ncs
#define nWE ((bus_params_t *) bus->params)->nwe
#define nOE ((bus_params_t *) bus->params)->noe
#define D ((bus_params_t *) bus->params)->d
#define nALE ((bus_params_t *) bus->params)->nale
#define ATA_ISO ((bus_params_t *) bus->params)->ata_iso
/**
@ -73,6 +74,7 @@ static bus_t *
mpc5200_bus_new( chain_t *chain, const bus_driver_t *driver, char *cmd_params[] )
{
bus_t *bus;
bus_params_t *bp;
part_t *part;
char buff[10];
int i;
@ -83,12 +85,22 @@ mpc5200_bus_new( chain_t *chain, const bus_driver_t *driver, char *cmd_params[]
return NULL;
bus->driver = driver;
bus->params = calloc( 1, sizeof (bus_params_t) );
bus->params = bp = (bus_params_t *)calloc( 1, sizeof (bus_params_t) );
if (!bus->params) {
free( bus );
return NULL;
}
bp->lpc_num_ad = 24;
bp->lpc_num_d = 8;
if (cmd_params[2] && !strncasecmp ("MUX", cmd_params[2], 3)) {
bp->lpc_num_ad = 25;
bp->lpc_num_d = 16;
bp->muxed = 1;
}
printf("%sMUXed %db address, %db data bus\n", (bp->muxed ? "" : "Non-"), bp->lpc_num_ad, bp->lpc_num_d);
CHAIN = chain;
PART = part = chain->parts->parts[chain->active_part];
@ -107,10 +119,7 @@ mpc5200_bus_new( chain_t *chain, const bus_driver_t *driver, char *cmd_params[]
failed |= generic_bus_attach_sig( part, &(nOE), "LP_OE" );
for (i = 0; i < LPC_NUM_D; i++) {
sprintf( buff, "EXT_AD_%d", i+LPC_NUM_AD );
failed |= generic_bus_attach_sig( part, &(D[i]), buff );
}
failed |= generic_bus_attach_sig( part, &(nALE), "LP_ALE_B" );
failed |= generic_bus_attach_sig( part, &(ATA_ISO), "ATA_ISOLATION" );
@ -145,12 +154,14 @@ mpc5200_bus_printinfo( bus_t *bus )
static int
mpc5200_bus_area( bus_t *bus, uint32_t adr, bus_area_t *area )
{
bus_params_t *bp = (bus_params_t *) bus->params;
if( adr < LPC_ADDR_SIZE )
{
area->description = N_("LocalPlus Bus");
area->start = UINT32_C(0x00000000);
area->length = LPC_ADDR_SIZE;
area->width = LPC_NUM_D;
area->width = bp->lpc_num_d;
return URJTAG_STATUS_OK;
}
@ -164,58 +175,62 @@ mpc5200_bus_area( bus_t *bus, uint32_t adr, bus_area_t *area )
static void
setup_address( bus_t *bus, uint32_t a )
{
int i;
bus_params_t *bp = (bus_params_t *) bus->params;
part_t *p = PART;
int i;
for (i = 0; i < LPC_NUM_AD; i++)
for (i = 0; i < bp->lpc_num_ad; i++)
part_set_signal( p, AD[i], 1, (a >> i) & 1 );
}
static void
set_data_in( bus_t *bus, uint32_t adr )
{
int i;
bus_params_t *bp = (bus_params_t *) bus->params;
part_t *p = PART;
bus_area_t area;
int i;
mpc5200_bus_area( bus, adr, &area );
if (area.width > LPC_NUM_D)
if (area.width > bp->lpc_num_d)
return;
for (i = 0; i < area.width; i++)
part_set_signal( p, D[i], 0, 0 );
part_set_signal( p, AD[i + (LPC_NUM_AD - bp->lpc_num_d)], 0, 0 );
}
static void
setup_data( bus_t *bus, uint32_t adr, uint32_t d )
{
int i;
bus_params_t *bp = (bus_params_t *) bus->params;
part_t *p = PART;
bus_area_t area;
int i;
mpc5200_bus_area( bus, adr, &area );
if (area.width > LPC_NUM_D)
if (area.width > bp->lpc_num_d)
return;
for (i = 0; i < area.width; i++)
part_set_signal( p, D[i], 1, (d >> i) & 1 );
part_set_signal( p, AD[i + (LPC_NUM_AD - bp->lpc_num_d)], 1, (d >> i) & 1 );
}
static uint32_t
get_data( bus_t *bus, uint32_t adr )
{
bus_params_t *bp = (bus_params_t *) bus->params;
bus_area_t area;
int i;
uint32_t d = 0;
part_t *p = PART;
int i;
mpc5200_bus_area( bus, adr, &area );
if (area.width > LPC_NUM_D)
if (area.width > bp->lpc_num_d)
return 0;
for (i = 0; i < area.width; i++)
d |= (uint32_t) (part_get_signal( p, D[i] ) << i);
for (i = 0; i < area.width; i++) {
d |= (uint32_t) (part_get_signal( p, AD[i + (LPC_NUM_AD - bp->lpc_num_d)] ) << i);
}
return d;
}
@ -226,9 +241,10 @@ get_data( bus_t *bus, uint32_t adr )
static void
mpc5200_bus_read_start( bus_t *bus, uint32_t adr )
{
bus_params_t *bp = (bus_params_t *) bus->params;
part_t *p = PART;
int i;
uint8_t cs = LPC_ADDR_TO_CS(adr);
int i;
LAST_ADR = adr;
@ -243,8 +259,14 @@ mpc5200_bus_read_start( bus_t *bus, uint32_t adr )
part_set_signal( p, nOE, 1, 0 );
setup_address( bus, adr );
set_data_in( bus, adr );
if ( !bp->muxed )
set_data_in( bus, adr );
else {
part_set_signal( p, nALE, 1, 0 );
chain_shift_data_registers( CHAIN, 0 );
part_set_signal( p, nALE, 1, 1 );
}
chain_shift_data_registers( CHAIN, 0 );
}
@ -255,12 +277,30 @@ mpc5200_bus_read_start( bus_t *bus, uint32_t adr )
static uint32_t
mpc5200_bus_read_next( bus_t *bus, uint32_t adr )
{
bus_params_t *bp = (bus_params_t *) bus->params;
part_t *p = PART;
uint32_t d;
setup_address( bus, adr );
chain_shift_data_registers( CHAIN, 1 );
if (!bp->muxed) {
setup_address( bus, adr );
chain_shift_data_registers( CHAIN, 1 );
d = get_data( bus, LAST_ADR );
} else {
set_data_in( bus, adr );
chain_shift_data_registers( CHAIN, 0 );
chain_shift_data_registers( CHAIN, 1 );
d = get_data( bus, LAST_ADR );
setup_address( bus, adr );
LAST_ADR = adr;
part_set_signal( p, nALE, 1, 0 );
chain_shift_data_registers( CHAIN, 0 );
part_set_signal( p, nALE, 1, 1 );
chain_shift_data_registers( CHAIN, 0 );
}
d = get_data( bus, LAST_ADR );
LAST_ADR = adr;
return d;
}
@ -272,9 +312,14 @@ mpc5200_bus_read_next( bus_t *bus, uint32_t adr )
static uint32_t
mpc5200_bus_read_end( bus_t *bus )
{
bus_params_t *bp = (bus_params_t *) bus->params;
part_t *p = PART;
int i;
if (bp->muxed) {
set_data_in( bus, LAST_ADR );
chain_shift_data_registers( CHAIN, 0 );
}
for (i = 0; i < LPC_NUM_CS; i++) {
part_set_signal( p, nCS[i], 1, 1 );
}
@ -292,12 +337,21 @@ mpc5200_bus_read_end( bus_t *bus )
static void
mpc5200_bus_write( bus_t *bus, uint32_t adr, uint32_t data )
{
bus_params_t *bp = (bus_params_t *) bus->params;
/* see Figure 6-47 in [1] */
part_t *p = PART;
chain_t *chain = CHAIN;
uint8_t cs = LPC_ADDR_TO_CS(adr);
int i;
if (bp->muxed) {
setup_address( bus, adr );
part_set_signal( p, nALE, 1, 0 );
chain_shift_data_registers( chain, 0 );
part_set_signal( p, nALE, 1, 1 );
chain_shift_data_registers( chain, 0 );
}
for (i = 0; i < LPC_NUM_CS; i++) {
part_set_signal( p, nCS[i], 1, !(cs==i) );
}
@ -305,7 +359,8 @@ mpc5200_bus_write( bus_t *bus, uint32_t adr, uint32_t data )
part_set_signal( p, nWE, 1, 1 );
part_set_signal( p, nOE, 1, 1 );
setup_address( bus, adr );
if (!bp->muxed)
setup_address( bus, adr );
setup_data( bus, adr, data );
chain_shift_data_registers( chain, 0 );
@ -318,7 +373,7 @@ mpc5200_bus_write( bus_t *bus, uint32_t adr, uint32_t data )
const bus_driver_t mpc5200_bus = {
"mpc5200",
N_("Freescale MPC5200 compatible bus driver via BSR"),
N_("Freescale MPC5200 compatible bus driver via BSR, parameter: [mux]"),
mpc5200_bus_new,
generic_bus_free,
mpc5200_bus_printinfo,

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