diff options
Diffstat (limited to 'board/siemens/CCM/fpga_ccm.c')
| -rw-r--r-- | board/siemens/CCM/fpga_ccm.c | 170 |
1 files changed, 170 insertions, 0 deletions
diff --git a/board/siemens/CCM/fpga_ccm.c b/board/siemens/CCM/fpga_ccm.c new file mode 100644 index 0000000..292387b --- /dev/null +++ b/board/siemens/CCM/fpga_ccm.c @@ -0,0 +1,170 @@ +/* + * (C) Copyright 2002 + * Wolfgang Grandegger, DENX Software Engineering, wg@denx.de. + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + + +#include <common.h> +#include <mpc8xx.h> +#include <commproc.h> +#include <common.h> + +#include "../common/fpga.h" + +fpga_t fpga_list[] = { + { "PUMA" , PUMA_CONF_BASE , + CFG_PC_PUMA_INIT , CFG_PC_PUMA_PROG , CFG_PC_PUMA_DONE } +}; +int fpga_count = sizeof(fpga_list) / sizeof(fpga_t); + +void can_driver_enable (void); +void can_driver_disable (void); + +#define _NOT_USED_ 0xFFFFFFFF + +/* + * PUMA access using UPM B + */ +const uint puma_table[] = +{ + /* + * Single Read. (Offset 0 in UPM RAM) + */ + _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, + _NOT_USED_, + /* + * Precharge and MRS + */ + _NOT_USED_, _NOT_USED_, _NOT_USED_, + /* + * Burst Read. (Offset 8 in UPM RAM) + */ + _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, + _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, + _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, + _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, + /* + * Single Write. (Offset 18 in UPM RAM) + */ + 0x0FFCF804, 0x0FFCF400, 0x3FFDFC47, /* last */ + _NOT_USED_, + _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, + /* + * Burst Write. (Offset 20 in UPM RAM) + */ + _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, + _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, + _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, + _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, + /* + * Refresh (Offset 30 in UPM RAM) + */ + _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, + _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, + _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, + /* + * Exception. (Offset 3c in UPM RAM) + */ + 0x7FFFFC07, /* last */ + _NOT_USED_, _NOT_USED_, _NOT_USED_, +}; + + +ulong fpga_control (fpga_t* fpga, int cmd) +{ + volatile immap_t *immr = (immap_t *)CFG_IMMR; + volatile memctl8xx_t *memctl = &immr->im_memctl; + + switch (cmd) { + case FPGA_INIT_IS_HIGH: + immr->im_ioport.iop_pcdir &= ~fpga->init_mask; /* input */ + return (immr->im_ioport.iop_pcdat & fpga->init_mask) ? 1:0; + + case FPGA_INIT_SET_LOW: + immr->im_ioport.iop_pcdir |= fpga->init_mask; /* output */ + immr->im_ioport.iop_pcdat &= ~fpga->init_mask; + break; + + case FPGA_INIT_SET_HIGH: + immr->im_ioport.iop_pcdir |= fpga->init_mask; /* output */ + immr->im_ioport.iop_pcdat |= fpga->init_mask; + break; + + case FPGA_PROG_SET_LOW: + immr->im_ioport.iop_pcdat &= ~fpga->prog_mask; + break; + + case FPGA_PROG_SET_HIGH: + immr->im_ioport.iop_pcdat |= fpga->prog_mask; + break; + + case FPGA_DONE_IS_HIGH: + return (immr->im_ioport.iop_pcdat & fpga->done_mask) ? 1:0; + + case FPGA_READ_MODE: + /* disable FPGA in memory controller */ + memctl->memc_br4 = 0; + memctl->memc_or4 = PUMA_CONF_OR_READ; + memctl->memc_br4 = PUMA_CONF_BR_READ; + + /* (re-) enable CAN drivers */ + can_driver_enable (); + + break; + + case FPGA_LOAD_MODE: + /* disable FPGA in memory controller */ + memctl->memc_br4 = 0; + /* + * We must disable the CAN drivers first because + * they use UPM B, too. + */ + can_driver_disable (); + /* + * Configure UPMB for FPGA + */ + upmconfig(UPMB,(uint *)puma_table,sizeof(puma_table)/sizeof(uint)); + memctl->memc_or4 = PUMA_CONF_OR_LOAD; + memctl->memc_br4 = PUMA_CONF_BR_LOAD; + break; + + case FPGA_GET_ID: + return *(volatile ulong *)fpga->conf_base; + + case FPGA_INIT_PORTS: + immr->im_ioport.iop_pcpar &= ~fpga->init_mask; /* INIT I/O */ + immr->im_ioport.iop_pcso &= ~fpga->init_mask; + immr->im_ioport.iop_pcdir &= ~fpga->init_mask; + + immr->im_ioport.iop_pcpar &= ~fpga->prog_mask; /* PROG Output */ + immr->im_ioport.iop_pcso &= ~fpga->prog_mask; + immr->im_ioport.iop_pcdir |= fpga->prog_mask; + + immr->im_ioport.iop_pcpar &= ~fpga->done_mask; /* DONE Input */ + immr->im_ioport.iop_pcso &= ~fpga->done_mask; + immr->im_ioport.iop_pcdir &= ~fpga->done_mask; + + break; + + } + return 0; +} + |