1 // SPDX-License-Identifier: GPL-2.0+ 2 /* 3 * (C) Copyright 2013 4 * Dirk Eibach, Guntermann & Drunck GmbH, dirk.eibach@gdsys.cc 5 * 6 * based on cmd_mem.c 7 * (C) Copyright 2000 8 * Wolfgang Denk, DENX Software Engineering, wd@denx.de. 9 */ 10 11 #include <common.h> 12 #include <command.h> 13 #include <console.h> 14 15 #include <gdsys_fpga.h> 16 17 static uint dp_last_fpga; 18 static uint dp_last_addr; 19 static uint dp_last_length = 0x40; 20 21 /* 22 * FPGA Memory Display 23 * 24 * Syntax: 25 * fpgad {fpga} {addr} {len} 26 */ 27 #define DISP_LINE_LEN 16 28 int do_fpga_md(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) 29 { 30 unsigned int k; 31 unsigned int fpga; 32 ulong addr, length; 33 int rc = 0; 34 u16 linebuf[DISP_LINE_LEN/sizeof(u16)]; 35 ulong nbytes; 36 37 /* 38 * We use the last specified parameters, unless new ones are 39 * entered. 40 */ 41 fpga = dp_last_fpga; 42 addr = dp_last_addr; 43 length = dp_last_length; 44 45 if (argc < 3) 46 return CMD_RET_USAGE; 47 48 if ((flag & CMD_FLAG_REPEAT) == 0) { 49 /* 50 * FPGA is specified since argc > 2 51 */ 52 fpga = simple_strtoul(argv[1], NULL, 16); 53 54 /* 55 * Address is specified since argc > 2 56 */ 57 addr = simple_strtoul(argv[2], NULL, 16); 58 59 /* 60 * If another parameter, it is the length to display. 61 * Length is the number of objects, not number of bytes. 62 */ 63 if (argc > 3) 64 length = simple_strtoul(argv[3], NULL, 16); 65 } 66 67 nbytes = length * sizeof(u16); 68 do { 69 ulong linebytes = (nbytes > DISP_LINE_LEN) ? 70 DISP_LINE_LEN : nbytes; 71 72 for (k = 0; k < linebytes / sizeof(u16); ++k) 73 fpga_get_reg(fpga, 74 (u16 *)fpga_ptr[fpga] + addr 75 / sizeof(u16) + k, 76 addr + k * sizeof(u16), 77 &linebuf[k]); 78 print_buffer(addr, (void *)linebuf, sizeof(u16), 79 linebytes / sizeof(u16), 80 DISP_LINE_LEN / sizeof(u16)); 81 82 nbytes -= linebytes; 83 addr += linebytes; 84 if (ctrlc()) { 85 rc = 1; 86 break; 87 } 88 } while (nbytes > 0); 89 90 dp_last_fpga = fpga; 91 dp_last_addr = addr; 92 dp_last_length = length; 93 return rc; 94 } 95 96 U_BOOT_CMD( 97 fpgad, 4, 1, do_fpga_md, 98 "fpga register display", 99 "fpga address [# of objects]" 100 ); 101