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https://github.com/AsahiLinux/u-boot
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1a4596601f
Signed-off-by: Wolfgang Denk <wd@denx.de> [trini: Fixup common/cmd_io.c] Signed-off-by: Tom Rini <trini@ti.com>
157 lines
2.8 KiB
C
157 lines
2.8 KiB
C
/*
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* (C) Copyright 2002
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* Rich Ireland, Enterasys Networks, rireland@enterasys.com.
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* Keith Outwater, keith_outwater@mvis.com.
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*
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* (C) Copyright 2008
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* Andre Schwarz, Matrix Vision GmbH, andre.schwarz@matrix-vision.de
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <common.h>
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#include <ACEX1K.h>
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#include <command.h>
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#include "fpga.h"
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#include "mvbc_p.h"
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#ifdef FPGA_DEBUG
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#define fpga_debug(fmt, args...) printf("%s: "fmt, __func__, ##args)
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#else
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#define fpga_debug(fmt, args...)
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#endif
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Altera_CYC2_Passive_Serial_fns altera_fns = {
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fpga_null_fn,
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fpga_config_fn,
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fpga_status_fn,
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fpga_done_fn,
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fpga_wr_fn,
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fpga_null_fn,
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fpga_null_fn,
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};
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Altera_desc cyclone2 = {
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Altera_CYC2,
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passive_serial,
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Altera_EP2C8_SIZE,
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(void *) &altera_fns,
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NULL,
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};
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DECLARE_GLOBAL_DATA_PTR;
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int mvbc_p_init_fpga(void)
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{
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fpga_debug("Initialize FPGA interface\n");
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fpga_init();
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fpga_add(fpga_altera, &cyclone2);
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fpga_config_fn(0, 1, 0);
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udelay(60);
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return 1;
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}
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int fpga_null_fn(int cookie)
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{
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return 0;
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}
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int fpga_config_fn(int assert, int flush, int cookie)
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{
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struct mpc5xxx_gpio *gpio = (struct mpc5xxx_gpio*)MPC5XXX_GPIO;
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u32 dvo = gpio->simple_dvo;
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fpga_debug("SET config : %s\n", assert ? "low" : "high");
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if (assert)
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dvo |= FPGA_CONFIG;
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else
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dvo &= ~FPGA_CONFIG;
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if (flush)
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gpio->simple_dvo = dvo;
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return assert;
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}
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int fpga_done_fn(int cookie)
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{
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struct mpc5xxx_gpio *gpio = (struct mpc5xxx_gpio*)MPC5XXX_GPIO;
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int result = 0;
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udelay(10);
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fpga_debug("CONF_DONE check ... ");
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if (gpio->simple_ival & FPGA_CONF_DONE) {
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fpga_debug("high\n");
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result = 1;
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} else
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fpga_debug("low\n");
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return result;
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}
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int fpga_status_fn(int cookie)
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{
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struct mpc5xxx_gpio *gpio = (struct mpc5xxx_gpio*)MPC5XXX_GPIO;
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int result = 0;
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fpga_debug("STATUS check ... ");
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if (gpio->sint_ival & FPGA_STATUS) {
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fpga_debug("high\n");
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result = 1;
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} else
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fpga_debug("low\n");
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return result;
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}
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int fpga_clk_fn(int assert_clk, int flush, int cookie)
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{
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struct mpc5xxx_gpio *gpio = (struct mpc5xxx_gpio*)MPC5XXX_GPIO;
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u32 dvo = gpio->simple_dvo;
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fpga_debug("CLOCK %s\n", assert_clk ? "high" : "low");
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if (assert_clk)
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dvo |= FPGA_CCLK;
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else
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dvo &= ~FPGA_CCLK;
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if (flush)
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gpio->simple_dvo = dvo;
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return assert_clk;
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}
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static inline int _write_fpga(u8 val)
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{
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int i;
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struct mpc5xxx_gpio *gpio = (struct mpc5xxx_gpio*)MPC5XXX_GPIO;
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u32 dvo = gpio->simple_dvo;
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for (i=0; i<8; i++) {
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dvo &= ~FPGA_CCLK;
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gpio->simple_dvo = dvo;
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dvo &= ~FPGA_DIN;
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if (val & 1)
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dvo |= FPGA_DIN;
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gpio->simple_dvo = dvo;
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dvo |= FPGA_CCLK;
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gpio->simple_dvo = dvo;
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val >>= 1;
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}
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return 0;
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}
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int fpga_wr_fn(const void *buf, size_t len, int flush, int cookie)
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{
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unsigned char *data = (unsigned char *) buf;
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int i;
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fpga_debug("fpga_wr: buf %p / size %d\n", buf, len);
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for (i = 0; i < len; i++)
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_write_fpga(data[i]);
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fpga_debug("\n");
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return FPGA_SUCCESS;
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}
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