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-rw-r--r--board/siemens/CCM/fpga_ccm.c170
1 files changed, 170 insertions, 0 deletions
diff --git a/board/siemens/CCM/fpga_ccm.c b/board/siemens/CCM/fpga_ccm.c
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+++ b/board/siemens/CCM/fpga_ccm.c
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+/*
+ * (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;
+}
+