From 7a8e9bed17d7924a9c5c4699b1f6a3a0359524ed Mon Sep 17 00:00:00 2001 From: wdenk Date: Sat, 31 May 2003 18:35:21 +0000 Subject: * Patch by Marc Singer, 29 May 2003: Fixed rarp boot method for IA32 and other little-endian CPUs. MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit * Patch by Marc Singer, 28 May 2003: Added port I/O commands. * Patch by Matthew McClintock, 28 May 2003 - cpu/mpc824x/start.S: fix relocation code when booting from RAM - minor patches for utx8245 * Patch by Daniel Engström, 28 May 2003: x86 update * Patch by Dave Ellis, 9 May 2003 + 27 May 2003: add nand flash support to SXNI855T configuration fix/extend nand flash support: - fix 'nand erase' command so does not erase bad blocks - fix 'nand write' command so does not write to bad blocks - fix nand_probe() so handles no flash detected properly - add doc/README.nand - add .jffs2 and .oob options to nand read/write - add 'nand bad' command to list bad blocks - add 'clean' option to 'nand erase' to write JFFS2 clean markers - make NAND read/write faster * Patch by Rune Torgersen, 23 May 2003: Update for MPC8266ADS board --- common/cmd_portio.c | 157 ++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 157 insertions(+) create mode 100644 common/cmd_portio.c (limited to 'common/cmd_portio.c') diff --git a/common/cmd_portio.c b/common/cmd_portio.c new file mode 100644 index 000000000..afa39e1eb --- /dev/null +++ b/common/cmd_portio.c @@ -0,0 +1,157 @@ +/* + * (C) Copyright 2003 + * Marc Singer, elf@buici.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 + */ + +/* + * Port I/O Functions + * + * Copied from FADS ROM, Dan Malek (dmalek@jlc.net) + */ + +#include +#include +#include + +#if (CONFIG_COMMANDS & CFG_CMD_PORTIO) + +extern int cmd_get_data_size (char *arg, int default_size); + +/* Display values from last command. + * Memory modify remembered values are different from display memory. + */ +static uint in_last_addr, in_last_size; +static uint out_last_addr, out_last_size, out_last_value; + + +int do_portio_out (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[]) +{ + uint addr = out_last_addr; + uint size = out_last_size; + uint value = out_last_value; + + if (argc != 3) { + printf ("Usage:\n%s\n", cmdtp->usage); + return 1; + } + + if ((flag & CMD_FLAG_REPEAT) == 0) { + /* New command specified. Check for a size specification. + * Defaults to long if no or incorrect specification. + */ + size = cmd_get_data_size (argv[0], 1); + addr = simple_strtoul (argv[1], NULL, 16); + value = simple_strtoul (argv[2], NULL, 16); + } +#if defined (CONFIG_X86) + + { + unsigned short port = addr; + + switch (size) { + default: + case 1: + { + unsigned char ch = value; + __asm__ volatile ("out %0, %%dx"::"a" (ch), "d" (port)); + } + break; + case 2: + { + unsigned short w = value; + __asm__ volatile ("out %0, %%dx"::"a" (w), "d" (port)); + } + break; + case 4: + __asm__ volatile ("out %0, %%dx"::"a" (value), "d" (port)); + + break; + } + } + +#endif /* CONFIG_X86 */ + + out_last_addr = addr; + out_last_size = size; + out_last_value = value; + + return 0; +} + +int do_portio_in (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[]) +{ + uint addr = in_last_addr; + uint size = in_last_size; + + if (argc != 2) { + printf ("Usage:\n%s\n", cmdtp->usage); + return 1; + } + + if ((flag & CMD_FLAG_REPEAT) == 0) { + /* New command specified. Check for a size specification. + * Defaults to long if no or incorrect specification. + */ + size = cmd_get_data_size (argv[0], 1); + addr = simple_strtoul (argv[1], NULL, 16); + } +#if defined (CONFIG_X86) + + { + unsigned short port = addr; + + switch (size) { + default: + case 1: + { + unsigned char ch; + __asm__ volatile ("in %%dx, %0":"=a" (ch):"d" (port)); + + printf (" %02x\n", ch); + } + break; + case 2: + { + unsigned short w; + __asm__ volatile ("in %%dx, %0":"=a" (w):"d" (port)); + + printf (" %04x\n", w); + } + break; + case 4: + { + unsigned long l; + __asm__ volatile ("in %%dx, %0":"=a" (l):"d" (port)); + + printf (" %08lx\n", l); + } + break; + } + } +#endif /* CONFIG_X86 */ + + in_last_addr = addr; + in_last_size = size; + + return 0; +} + +#endif /* CFG_CMD_PORTIO */ -- cgit v1.2.3-70-g09d2