diff options
Diffstat (limited to 'drivers/fpga/stratixII.c')
| -rw-r--r-- | drivers/fpga/stratixII.c | 231 |
1 files changed, 231 insertions, 0 deletions
diff --git a/drivers/fpga/stratixII.c b/drivers/fpga/stratixII.c new file mode 100644 index 0000000..7556dbf --- /dev/null +++ b/drivers/fpga/stratixII.c @@ -0,0 +1,231 @@ +/* + * (C) Copyright 2007 + * Eran Liberty, Extricom , eran.liberty@gmail.com + * + * 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> /* core U-Boot definitions */ +#include <altera.h> + +int StratixII_ps_fpp_load (Altera_desc * desc, void *buf, size_t bsize, + int isSerial, int isSecure); +int StratixII_ps_fpp_dump (Altera_desc * desc, void *buf, size_t bsize); + +/****************************************************************/ +/* Stratix II Generic Implementation */ +int StratixII_load (Altera_desc * desc, void *buf, size_t bsize) +{ + int ret_val = FPGA_FAIL; + + switch (desc->iface) { + case passive_serial: + ret_val = StratixII_ps_fpp_load (desc, buf, bsize, 1, 0); + break; + case fast_passive_parallel: + ret_val = StratixII_ps_fpp_load (desc, buf, bsize, 0, 0); + break; + case fast_passive_parallel_security: + ret_val = StratixII_ps_fpp_load (desc, buf, bsize, 0, 1); + break; + + /* Add new interface types here */ + default: + printf ("%s: Unsupported interface type, %d\n", __FUNCTION__, + desc->iface); + } + return ret_val; +} + +int StratixII_dump (Altera_desc * desc, void *buf, size_t bsize) +{ + int ret_val = FPGA_FAIL; + + switch (desc->iface) { + case passive_serial: + case fast_passive_parallel: + case fast_passive_parallel_security: + ret_val = StratixII_ps_fpp_dump (desc, buf, bsize); + break; + /* Add new interface types here */ + default: + printf ("%s: Unsupported interface type, %d\n", __FUNCTION__, + desc->iface); + } + return ret_val; +} + +int StratixII_info (Altera_desc * desc) +{ + return FPGA_SUCCESS; +} + +int StratixII_reloc (Altera_desc * desc, ulong reloc_offset) +{ + int i; + uint32_t dest = (uint32_t) desc & 0xff000000; + + /* we assume a relocated code and non relocated code has different upper 8 bits */ + if (dest != ((uint32_t) desc->iface_fns & 0xff000000)) { + desc->iface_fns = + (void *)((uint32_t) (desc->iface_fns) + reloc_offset); + } + for (i = 0; i < sizeof (altera_board_specific_func) / sizeof (void *); + i++) { + if (dest != + ((uint32_t) (((void **)(desc->iface_fns))[i]) & 0xff000000)) + { + ((void **)(desc->iface_fns))[i] = + (void + *)(((uint32_t) (((void **)(desc->iface_fns))[i])) + + reloc_offset); + } + } + return FPGA_SUCCESS; +} + +int StratixII_ps_fpp_dump (Altera_desc * desc, void *buf, size_t bsize) +{ + printf ("Stratix II Fast Passive Parallel dump is not implemented\n"); + return FPGA_FAIL; +} + +int StratixII_ps_fpp_load (Altera_desc * desc, void *buf, size_t bsize, + int isSerial, int isSecure) +{ + altera_board_specific_func *fns; + int cookie; + int ret_val = FPGA_FAIL; + int bytecount; + char *buff = buf; + int i; + + if (!desc) { + printf ("%s(%d) Altera_desc missing\n", __FUNCTION__, __LINE__); + return FPGA_FAIL; + } + if (!buff) { + printf ("%s(%d) buffer is missing\n", __FUNCTION__, __LINE__); + return FPGA_FAIL; + } + if (!bsize) { + printf ("%s(%d) size is zero\n", __FUNCTION__, __LINE__); + return FPGA_FAIL; + } + if (!desc->iface_fns) { + printf + ("%s(%d) Altera_desc function interface table is missing\n", + __FUNCTION__, __LINE__); + return FPGA_FAIL; + } + fns = (altera_board_specific_func *) (desc->iface_fns); + cookie = desc->cookie; + + if (! + (fns->config && fns->status && fns->done && fns->data + && fns->abort)) { + printf + ("%s(%d) Missing some function in the function interface table\n", + __FUNCTION__, __LINE__); + return FPGA_FAIL; + } + + /* 1. give board specific a chance to do anything before we start */ + if (fns->pre) { + if ((ret_val = fns->pre (cookie)) < 0) { + return ret_val; + } + } + + /* from this point on we must fail gracfully by calling lower layer abort */ + + /* 2. Strat burn cycle by deasserting config for t_CFG and waiting t_CF2CK after reaserted */ + fns->config (0, 1, cookie); + udelay (5); /* nCONFIG low pulse width 2usec */ + fns->config (1, 1, cookie); + udelay (100); /* nCONFIG high to first rising edge on DCLK */ + + /* 3. Start the Data cycle with clk deasserted */ + bytecount = 0; + fns->clk (0, 1, cookie); + + printf ("loading to fpga "); + while (bytecount < bsize) { + /* 3.1 check stratix has not signaled us an error */ + if (fns->status (cookie) != 1) { + printf + ("\n%s(%d) Stratix failed (byte transfered till failure 0x%x)\n", + __FUNCTION__, __LINE__, bytecount); + fns->abort (cookie); + return FPGA_FAIL; + } + if (isSerial) { + int i; + uint8_t data = buff[bytecount++]; + for (i = 0; i < 8; i++) { + /* 3.2(ps) put data on the bus */ + fns->data ((data >> i) & 1, 1, cookie); + + /* 3.3(ps) clock once */ + fns->clk (1, 1, cookie); + fns->clk (0, 1, cookie); + } + } else { + /* 3.2(fpp) put data on the bus */ + fns->data (buff[bytecount++], 1, cookie); + + /* 3.3(fpp) clock once */ + fns->clk (1, 1, cookie); + fns->clk (0, 1, cookie); + + /* 3.4(fpp) for secure cycle push 3 more clocks */ + for (i = 0; isSecure && i < 3; i++) { + fns->clk (1, 1, cookie); + fns->clk (0, 1, cookie); + } + } + + /* 3.5 while clk is deasserted it is safe to print some progress indication */ + if ((bytecount % (bsize / 100)) == 0) { + printf ("\b\b\b%02d\%", bytecount * 100 / bsize); + } + } + + /* 4. Set one last clock and check conf done signal */ + fns->clk (1, 1, cookie); + udelay (100); + if (!fns->done (cookie)) { + printf (" error!.\n"); + fns->abort (cookie); + return FPGA_FAIL; + } else { + printf ("\b\b\b done.\n"); + } + + /* 5. call lower layer post configuration */ + if (fns->post) { + if ((ret_val = fns->post (cookie)) < 0) { + fns->abort (cookie); + return ret_val; + } + } + + return FPGA_SUCCESS; +} |