diff options
Diffstat (limited to 'common/cmd_mp.c')
| -rw-r--r-- | common/cmd_mp.c | 96 |
1 files changed, 96 insertions, 0 deletions
diff --git a/common/cmd_mp.c b/common/cmd_mp.c new file mode 100644 index 0000000..d96e6a3 --- /dev/null +++ b/common/cmd_mp.c @@ -0,0 +1,96 @@ +/* + * Copyright 2008 Freescale Semiconductor, Inc. + * + * 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 + */ + +#include <common.h> +#include <command.h> + +int +cpu_cmd(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) +{ + unsigned long cpuid, val = 0; + + if (argc < 3) { + printf ("Usage:\n%s\n", cmdtp->usage); + return 1; + } + + cpuid = simple_strtoul(argv[1], NULL, 10); + if (cpuid >= CONFIG_NR_CPUS) { + printf ("Core num: %d is out of range[0..%d]\n", + cpuid, CONFIG_NR_CPUS - 1); + return 1; + } + + + if (argc == 3) { + if (strncmp(argv[2], "reset", 5) == 0) { + cpu_reset(cpuid); + } else if (strncmp(argv[2], "status", 6) == 0) { + cpu_status(cpuid); + } else { + printf ("Usage:\n%s\n", cmdtp->usage); + return 1; + } + return 0; + } + + /* 4 or greater, make sure its release */ + if (strncmp(argv[2], "release", 7) != 0) { + printf ("Usage:\n%s\n", cmdtp->usage); + return 1; + } + + val = simple_strtoul(argv[3], NULL, 16); + + if (cpu_release(cpuid, val, argc - 4, argv + 4)) { + printf ("Usage:\n%s\n", cmdtp->usage); + return 1; + } + + return 0; +} + +#ifdef CONFIG_PPC +#define CPU_ARCH_HELP \ + " [args] : <pir> <r3> <r4> <r6> <r7>\n" \ + " pir - processor id (if writeable)\n" \ + " r3 - value for gpr 3\n" \ + " r4 - value for gpr 4\n" \ + " r6 - value for gpr 6\n" \ + " r7 - value for gpr 7\n" \ + "\n" \ + " Use '-' for any arg if you want the default value.\n" \ + " Default for r3, r4, r7 is 0, r6 is 0x65504150\n" \ + "\n" \ + " When cpu <num> is released r5 = 0 per the ePAPR spec.\n" +#endif + +U_BOOT_CMD( + cpu, CFG_MAXARGS, 1, cpu_cmd, + "cpu - Multiprocessor CPU boot manipulation and release\n", + "<num> reset - Reset cpu <num>\n" + "cpu <num> status - Status of cpu <num>\n" + "cpu <num> release <addr> [args] - Release cpu <num> at <addr> with [args]\n" +#ifdef CPU_ARCH_HELP + CPU_ARCH_HELP +#endif + ); |