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Diffstat (limited to 'board/esd/pmc440/fpga.c')
| -rw-r--r-- | board/esd/pmc440/fpga.c | 446 |
1 files changed, 0 insertions, 446 deletions
diff --git a/board/esd/pmc440/fpga.c b/board/esd/pmc440/fpga.c deleted file mode 100644 index f876da855b..0000000000 --- a/board/esd/pmc440/fpga.c +++ /dev/null @@ -1,446 +0,0 @@ -/* - * (C) Copyright 2007 - * Matthias Fuchs, esd gmbh, matthias.fuchs@esd-electronics.com. - * - * SPDX-License-Identifier: GPL-2.0+ - */ - -#include <common.h> -#include <asm/io.h> -#include <spartan2.h> -#include <spartan3.h> -#include <command.h> -#include "fpga.h" -#include "pmc440.h" - -DECLARE_GLOBAL_DATA_PTR; - -#if defined(CONFIG_FPGA) - -#define USE_SP_CODE - -#ifdef USE_SP_CODE -xilinx_spartan3_slave_parallel_fns pmc440_fpga_fns = { - fpga_pre_config_fn, - fpga_pgm_fn, - fpga_init_fn, - NULL, /* err */ - fpga_done_fn, - fpga_clk_fn, - fpga_cs_fn, - fpga_wr_fn, - NULL, /* rdata */ - fpga_wdata_fn, - fpga_busy_fn, - fpga_abort_fn, - fpga_post_config_fn, -}; -#else -xilinx_spartan3_slave_serial_fns pmc440_fpga_fns = { - fpga_pre_config_fn, - fpga_pgm_fn, - fpga_clk_fn, - fpga_init_fn, - fpga_done_fn, - fpga_wr_fn, - fpga_post_config_fn, -}; -#endif - -xilinx_spartan2_slave_serial_fns ngcc_fpga_fns = { - ngcc_fpga_pre_config_fn, - ngcc_fpga_pgm_fn, - ngcc_fpga_clk_fn, - ngcc_fpga_init_fn, - ngcc_fpga_done_fn, - ngcc_fpga_wr_fn, - ngcc_fpga_post_config_fn -}; - -xilinx_desc fpga[CONFIG_FPGA_COUNT] = { - XILINX_XC3S1200E_DESC( -#ifdef USE_SP_CODE - slave_parallel, -#else - slave_serial, -#endif - (void *)&pmc440_fpga_fns, - 0), - XILINX_XC2S200_DESC( - slave_serial, - (void *)&ngcc_fpga_fns, - 0) -}; - - -/* - * Set the active-low FPGA reset signal. - */ -void fpga_reset(int assert) -{ - debug("%s:%d: RESET ", __FUNCTION__, __LINE__); - if (assert) { - out_be32((void*)GPIO1_OR, in_be32((void*)GPIO1_OR) & ~GPIO1_FPGA_DATA); - debug("asserted\n"); - } else { - out_be32((void*)GPIO1_OR, in_be32((void*)GPIO1_OR) | GPIO1_FPGA_DATA); - debug("deasserted\n"); - } -} - - -/* - * Initialize the SelectMap interface. We assume that the mode and the - * initial state of all of the port pins have already been set! - */ -void fpga_serialslave_init(void) -{ - debug("%s:%d: Initialize serial slave interface\n", __FUNCTION__, - __LINE__); - fpga_pgm_fn(false, false, 0); /* make sure program pin is inactive */ -} - - -/* - * Set the FPGA's active-low SelectMap program line to the specified level - */ -int fpga_pgm_fn(int assert, int flush, int cookie) -{ - debug("%s:%d: FPGA PROGRAM ", - __FUNCTION__, __LINE__); - - if (assert) { - out_be32((void*)GPIO1_OR, in_be32((void*)GPIO1_OR) & ~GPIO1_FPGA_PRG); - debug("asserted\n"); - } else { - out_be32((void*)GPIO1_OR, in_be32((void*)GPIO1_OR) | GPIO1_FPGA_PRG); - debug("deasserted\n"); - } - return assert; -} - - -/* - * Test the state of the active-low FPGA INIT line. Return 1 on INIT - * asserted (low). - */ -int fpga_init_fn(int cookie) -{ - if (in_be32((void*)GPIO1_IR) & GPIO1_FPGA_INIT) - return 0; - else - return 1; -} - -#ifdef USE_SP_CODE -int fpga_abort_fn(int cookie) -{ - return 0; -} - - -int fpga_cs_fn(int assert_cs, int flush, int cookie) -{ - return assert_cs; -} - - -int fpga_busy_fn(int cookie) -{ - return 1; -} -#endif - - -/* - * Test the state of the active-high FPGA DONE pin - */ -int fpga_done_fn(int cookie) -{ - if (in_be32((void*)GPIO1_IR) & GPIO1_FPGA_DONE) - return 1; - else - return 0; -} - - -/* - * FPGA pre-configuration function. Just make sure that - * FPGA reset is asserted to keep the FPGA from starting up after - * configuration. - */ -int fpga_pre_config_fn(int cookie) -{ - debug("%s:%d: FPGA pre-configuration\n", __FUNCTION__, __LINE__); - fpga_reset(true); - - /* release init# */ - out_be32((void*)GPIO0_OR, in_be32((void*)GPIO0_OR) | GPIO0_FPGA_FORCEINIT); - /* disable PLD IOs */ - out_be32((void*)GPIO1_OR, in_be32((void*)GPIO1_OR) | GPIO1_IOEN_N); - return 0; -} - - -/* - * FPGA post configuration function. Blip the FPGA reset line and then see if - * the FPGA appears to be running. - */ -int fpga_post_config_fn(int cookie) -{ - pmc440_fpga_t *fpga = (pmc440_fpga_t *)FPGA_BA; - int rc=0; - char *s; - - debug("%s:%d: FPGA post configuration\n", __FUNCTION__, __LINE__); - - /* enable PLD0..7 pins */ - out_be32((void*)GPIO1_OR, in_be32((void*)GPIO1_OR) & ~GPIO1_IOEN_N); - - fpga_reset(true); - udelay (100); - fpga_reset(false); - udelay (100); - - FPGA_OUT32(&fpga->status, (gd->board_type << STATUS_HWREV_SHIFT) & STATUS_HWREV_MASK); - - /* NGCC/CANDES only: enable ledlink */ - if ((s = getenv("bd_type")) && - ((!strcmp(s, "ngcc")) || (!strcmp(s, "candes")))) - FPGA_SETBITS(&fpga->ctrla, 0x29f8c000); - - return rc; -} - - -int fpga_clk_fn(int assert_clk, int flush, int cookie) -{ - if (assert_clk) - out_be32((void*)GPIO1_OR, in_be32((void*)GPIO1_OR) | GPIO1_FPGA_CLK); - else - out_be32((void*)GPIO1_OR, in_be32((void*)GPIO1_OR) & ~GPIO1_FPGA_CLK); - - return assert_clk; -} - - -int fpga_wr_fn(int assert_write, int flush, int cookie) -{ - if (assert_write) - out_be32((void*)GPIO1_OR, in_be32((void*)GPIO1_OR) | GPIO1_FPGA_DATA); - else - out_be32((void*)GPIO1_OR, in_be32((void*)GPIO1_OR) & ~GPIO1_FPGA_DATA); - - return assert_write; -} - -#ifdef USE_SP_CODE -int fpga_wdata_fn(uchar data, int flush, int cookie) -{ - uchar val = data; - ulong or = in_be32((void*)GPIO1_OR); - int i = 7; - do { - /* Write data */ - if (val & 0x80) - or = (or & ~GPIO1_FPGA_CLK) | GPIO1_FPGA_DATA; - else - or = or & ~(GPIO1_FPGA_CLK | GPIO1_FPGA_DATA); - - out_be32((void*)GPIO1_OR, or); - - /* Assert the clock */ - or |= GPIO1_FPGA_CLK; - out_be32((void*)GPIO1_OR, or); - val <<= 1; - i --; - } while (i > 0); - - /* Write last data bit (the 8th clock comes from the sp_load() code */ - if (val & 0x80) - or = (or & ~GPIO1_FPGA_CLK) | GPIO1_FPGA_DATA; - else - or = or & ~(GPIO1_FPGA_CLK | GPIO1_FPGA_DATA); - - out_be32((void*)GPIO1_OR, or); - - return 0; -} -#endif - -#define NGCC_FPGA_PRG CLOCK_EN -#define NGCC_FPGA_DATA RESET_OUT -#define NGCC_FPGA_DONE CLOCK_IN -#define NGCC_FPGA_INIT IRIGB_R_IN -#define NGCC_FPGA_CLK CLOCK_OUT - -void ngcc_fpga_serialslave_init(void) -{ - debug("%s:%d: Initialize serial slave interface\n", - __FUNCTION__, __LINE__); - - /* make sure program pin is inactive */ - ngcc_fpga_pgm_fn(false, false, 0); -} - -/* - * Set the active-low FPGA reset signal. - */ -void ngcc_fpga_reset(int assert) -{ - debug("%s:%d: RESET ", __FUNCTION__, __LINE__); - - if (assert) { - FPGA_CLRBITS(NGCC_CTRL_BASE, NGCC_CTRL_FPGARST_N); - debug("asserted\n"); - } else { - FPGA_SETBITS(NGCC_CTRL_BASE, NGCC_CTRL_FPGARST_N); - debug("deasserted\n"); - } -} - - -/* - * Set the FPGA's active-low SelectMap program line to the specified level - */ -int ngcc_fpga_pgm_fn(int assert, int flush, int cookie) -{ - pmc440_fpga_t *fpga = (pmc440_fpga_t *)FPGA_BA; - - debug("%s:%d: FPGA PROGRAM ", __FUNCTION__, __LINE__); - - if (assert) { - FPGA_CLRBITS(&fpga->ctrla, NGCC_FPGA_PRG); - debug("asserted\n"); - } else { - FPGA_SETBITS(&fpga->ctrla, NGCC_FPGA_PRG); - debug("deasserted\n"); - } - - return assert; -} - - -/* - * Test the state of the active-low FPGA INIT line. Return 1 on INIT - * asserted (low). - */ -int ngcc_fpga_init_fn(int cookie) -{ - pmc440_fpga_t *fpga = (pmc440_fpga_t *)FPGA_BA; - - debug("%s:%d: INIT check... ", __FUNCTION__, __LINE__); - if (FPGA_IN32(&fpga->status) & NGCC_FPGA_INIT) { - debug("high\n"); - return 0; - } else { - debug("low\n"); - return 1; - } -} - - -/* - * Test the state of the active-high FPGA DONE pin - */ -int ngcc_fpga_done_fn(int cookie) -{ - pmc440_fpga_t *fpga = (pmc440_fpga_t *)FPGA_BA; - - debug("%s:%d: DONE check... ", __FUNCTION__, __LINE__); - if (FPGA_IN32(&fpga->status) & NGCC_FPGA_DONE) { - debug("DONE high\n"); - return 1; - } else { - debug("low\n"); - return 0; - } -} - - -/* - * FPGA pre-configuration function. - */ -int ngcc_fpga_pre_config_fn(int cookie) -{ - pmc440_fpga_t *fpga = (pmc440_fpga_t *)FPGA_BA; - debug("%s:%d: FPGA pre-configuration\n", __FUNCTION__, __LINE__); - - ngcc_fpga_reset(true); - FPGA_CLRBITS(&fpga->ctrla, 0xfffffe00); - - ngcc_fpga_reset(true); - return 0; -} - - -/* - * FPGA post configuration function. Blip the FPGA reset line and then see if - * the FPGA appears to be running. - */ -int ngcc_fpga_post_config_fn(int cookie) -{ - pmc440_fpga_t *fpga = (pmc440_fpga_t *)FPGA_BA; - - debug("%s:%d: NGCC FPGA post configuration\n", __FUNCTION__, __LINE__); - - udelay (100); - ngcc_fpga_reset(false); - - FPGA_SETBITS(&fpga->ctrla, 0x29f8c000); - - return 0; -} - - -int ngcc_fpga_clk_fn(int assert_clk, int flush, int cookie) -{ - pmc440_fpga_t *fpga = (pmc440_fpga_t *)FPGA_BA; - - if (assert_clk) - FPGA_SETBITS(&fpga->ctrla, NGCC_FPGA_CLK); - else - FPGA_CLRBITS(&fpga->ctrla, NGCC_FPGA_CLK); - - return assert_clk; -} - - -int ngcc_fpga_wr_fn(int assert_write, int flush, int cookie) -{ - pmc440_fpga_t *fpga = (pmc440_fpga_t *)FPGA_BA; - - if (assert_write) - FPGA_SETBITS(&fpga->ctrla, NGCC_FPGA_DATA); - else - FPGA_CLRBITS(&fpga->ctrla, NGCC_FPGA_DATA); - - return assert_write; -} - - -/* - * Initialize the fpga. Return 1 on success, 0 on failure. - */ -int pmc440_init_fpga(void) -{ - char *s; - - debug("%s:%d: Initialize FPGA interface\n", - __FUNCTION__, __LINE__); - fpga_init(); - - fpga_serialslave_init (); - debug("%s:%d: Adding fpga 0\n", __FUNCTION__, __LINE__); - fpga_add (fpga_xilinx, &fpga[0]); - - /* NGCC only */ - if ((s = getenv("bd_type")) && !strcmp(s, "ngcc")) { - ngcc_fpga_serialslave_init (); - debug("%s:%d: Adding fpga 1\n", __FUNCTION__, __LINE__); - fpga_add (fpga_xilinx, &fpga[1]); - } - - return 0; -} -#endif /* CONFIG_FPGA */ |