diff options
author | wdenk <wdenk> | 2002-08-27 05:55:31 +0000 |
---|---|---|
committer | wdenk <wdenk> | 2002-08-27 05:55:31 +0000 |
commit | 3863585bb1c1e8f89b4a2e90c4b83f8b81b8e029 (patch) | |
tree | d23ca6b76e08fd06d675c32f72d1082173e7eaf1 /common/cmd_dcr.c | |
parent | f8cac651b33efa270e4dfa1292d01a3b5d7a62cf (diff) | |
download | bootable_bootloader_goldelico_gta04-3863585bb1c1e8f89b4a2e90c4b83f8b81b8e029.zip bootable_bootloader_goldelico_gta04-3863585bb1c1e8f89b4a2e90c4b83f8b81b8e029.tar.gz bootable_bootloader_goldelico_gta04-3863585bb1c1e8f89b4a2e90c4b83f8b81b8e029.tar.bz2 |
Initial revision
Diffstat (limited to 'common/cmd_dcr.c')
-rw-r--r-- | common/cmd_dcr.c | 103 |
1 files changed, 103 insertions, 0 deletions
diff --git a/common/cmd_dcr.c b/common/cmd_dcr.c new file mode 100644 index 0000000..072685e --- /dev/null +++ b/common/cmd_dcr.c @@ -0,0 +1,103 @@ +/* + * (C) Copyright 2001 + * Erik Theisen, Wave 7 Optics, etheisen@mindspring.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 + */ + +/* + * IBM 4XX DCR Functions + */ + +#include <common.h> +#include <config.h> +#include <command.h> +#include <cmd_dcr.h> + +#if defined(CONFIG_4xx) && defined(CFG_CMD_SETGETDCR) + +/* ====================================================================== + * Interpreter command to retrieve an IBM PPC 4xx Device Control Register + * ====================================================================== + */ +int do_getdcr ( cmd_tbl_t *cmdtp, int flag, int argc, char *argv[] ) +{ + unsigned short dcrn; /* Device Control Register Num */ + unsigned long value; /* DCR's value */ + + /* Validate arguments */ + if (argc < 2) { + printf("Usage:\n%s\n", cmdtp->usage); + return 1; + } + + /* Get a DCR */ + dcrn = (unsigned short)simple_strtoul(argv[ 1 ], NULL, 16); + value = get_dcr(dcrn); + + printf("%04x: %08lx\n", dcrn, value); + + return 0; +} /* do_getdcr */ + + +/* ====================================================================== + * Interpreter command to set an IBM PPC 4xx Device Control Register + * ====================================================================== +*/ +int do_setdcr ( cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) +{ + unsigned short dcrn; /* Device Control Register Num */ + unsigned long value; /* DCR's value */ + int nbytes; + extern char console_buffer[]; + + /* Validate arguments */ + if (argc < 2) { + printf("Usage:\n%s\n", cmdtp->usage); + return 1; + } + + /* Set a DCR */ + dcrn = (unsigned short)simple_strtoul(argv[1], NULL, 16); + do { + value = get_dcr(dcrn); + printf("%04x: %08lx", dcrn, value); + nbytes = readline(" ? "); + if (nbytes == 0) { + /* + * <CR> pressed as only input, don't modify current + * location and exit command. + */ + nbytes = 1; + return 0; + } else { + unsigned long i; + char *endp; + i = simple_strtoul(console_buffer, &endp, 16); + nbytes = endp - console_buffer; + if (nbytes) + set_dcr(dcrn, i); + } + } while (nbytes); + + return 0; +} /* do_setdcr */ + +#endif /* CONFIG_4xx & CFG_CMD_SETGETDCR */ |