From c0ef192b30e8c24d880002d2855e530510568fcc Mon Sep 17 00:00:00 2001 From: Kolja Waschk Date: Tue, 6 Nov 2007 17:20:15 +0000 Subject: [PATCH] [ 826404 ] s3c4510 bus driver (without jedec.c fix) git-svn-id: https://urjtag.svn.sourceforge.net/svnroot/urjtag/trunk@680 b68d4a1b-bc3d-0410-92ed-d4ac073336b7 --- jtag/src/bus/s3c4510x.c | 144 +++++++++++++++++++++++++--------------- jtag/src/cmd/peekpoke.c | 50 ++++++++++---- jtag/src/jtag.c | 29 +++++++- 3 files changed, 158 insertions(+), 65 deletions(-) diff --git a/jtag/src/bus/s3c4510x.c b/jtag/src/bus/s3c4510x.c index c7fc5033..a9efed54 100644 --- a/jtag/src/bus/s3c4510x.c +++ b/jtag/src/bus/s3c4510x.c @@ -24,6 +24,11 @@ ** Jiun-Shian Ho , ** Copy from other bus drivers written by Marcel Telka ** +** Krzysztof Blaszkowski +** - 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 diff --git a/jtag/src/cmd/peekpoke.c b/jtag/src/cmd/peekpoke.c index 6298ef86..a85fc022 100644 --- a/jtag/src/cmd/peekpoke.c +++ b/jtag/src/cmd/peekpoke.c @@ -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" diff --git a/jtag/src/jtag.c b/jtag/src/jtag.c index 2ee5a43a..89debed4 100644 --- a/jtag/src/jtag.c +++ b/jtag/src/jtag.c @@ -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 */