1*83d290c5STom Rini // SPDX-License-Identifier: GPL-2.0+
22e192b24SSimon Glass /*
32e192b24SSimon Glass * Copyright (c) 2015 Google, Inc
42e192b24SSimon Glass * Written by Simon Glass <sjg@chromium.org>
5320eca5cSÁlvaro Fernández Rojas * Copyright (c) 2017 Álvaro Fernández Rojas <noltari@gmail.com>
62e192b24SSimon Glass */
72e192b24SSimon Glass
82e192b24SSimon Glass #include <common.h>
92e192b24SSimon Glass #include <command.h>
102e192b24SSimon Glass #include <cpu.h>
112e192b24SSimon Glass #include <dm.h>
122e192b24SSimon Glass #include <errno.h>
132e192b24SSimon Glass
142e192b24SSimon Glass static const char *cpu_feature_name[CPU_FEAT_COUNT] = {
152e192b24SSimon Glass "L1 cache",
162e192b24SSimon Glass "MMU",
17740d5d34SSimon Glass "Microcode",
1822c2c179SÁlvaro Fernández Rojas "Device ID",
192e192b24SSimon Glass };
202e192b24SSimon Glass
print_cpu_list(bool detail)212e192b24SSimon Glass static int print_cpu_list(bool detail)
222e192b24SSimon Glass {
232e192b24SSimon Glass struct udevice *dev;
242e192b24SSimon Glass char buf[100];
252e192b24SSimon Glass
26320eca5cSÁlvaro Fernández Rojas for (uclass_first_device(UCLASS_CPU, &dev);
27320eca5cSÁlvaro Fernández Rojas dev;
28320eca5cSÁlvaro Fernández Rojas uclass_next_device(&dev)) {
292e192b24SSimon Glass struct cpu_platdata *plat = dev_get_parent_platdata(dev);
302e192b24SSimon Glass struct cpu_info info;
31320eca5cSÁlvaro Fernández Rojas bool first = true;
32320eca5cSÁlvaro Fernández Rojas int ret, i;
332e192b24SSimon Glass
342e192b24SSimon Glass ret = cpu_get_desc(dev, buf, sizeof(buf));
352e192b24SSimon Glass printf("%3d: %-10s %s\n", dev->seq, dev->name,
362e192b24SSimon Glass ret ? "<no description>" : buf);
372e192b24SSimon Glass if (!detail)
382e192b24SSimon Glass continue;
392e192b24SSimon Glass ret = cpu_get_info(dev, &info);
402e192b24SSimon Glass if (ret) {
412e192b24SSimon Glass printf("\t(no detail available");
422e192b24SSimon Glass if (ret != -ENOSYS)
43320eca5cSÁlvaro Fernández Rojas printf(": err=%d", ret);
442e192b24SSimon Glass printf(")\n");
452e192b24SSimon Glass continue;
462e192b24SSimon Glass }
472e192b24SSimon Glass printf("\tID = %d, freq = ", plat->cpu_id);
482e192b24SSimon Glass print_freq(info.cpu_freq, "");
492e192b24SSimon Glass for (i = 0; i < CPU_FEAT_COUNT; i++) {
502e192b24SSimon Glass if (info.features & (1 << i)) {
512e192b24SSimon Glass printf("%s%s", first ? ": " : ", ",
522e192b24SSimon Glass cpu_feature_name[i]);
532e192b24SSimon Glass first = false;
542e192b24SSimon Glass }
552e192b24SSimon Glass }
562e192b24SSimon Glass printf("\n");
57320eca5cSÁlvaro Fernández Rojas if (info.features & (1 << CPU_FEAT_UCODE))
58740d5d34SSimon Glass printf("\tMicrocode version %#x\n",
59740d5d34SSimon Glass plat->ucode_version);
60740d5d34SSimon Glass if (info.features & (1 << CPU_FEAT_DEVICE_ID))
61740d5d34SSimon Glass printf("\tDevice ID %#lx\n", plat->device_id);
622e192b24SSimon Glass }
632e192b24SSimon Glass
642e192b24SSimon Glass return 0;
652e192b24SSimon Glass }
662e192b24SSimon Glass
do_cpu_list(cmd_tbl_t * cmdtp,int flag,int argc,char * const argv[])67320eca5cSÁlvaro Fernández Rojas static int do_cpu_list(cmd_tbl_t *cmdtp, int flag, int argc,
68320eca5cSÁlvaro Fernández Rojas char *const argv[])
692e192b24SSimon Glass {
702e192b24SSimon Glass if (print_cpu_list(false))
712e192b24SSimon Glass return CMD_RET_FAILURE;
722e192b24SSimon Glass
732e192b24SSimon Glass return 0;
742e192b24SSimon Glass }
752e192b24SSimon Glass
do_cpu_detail(cmd_tbl_t * cmdtp,int flag,int argc,char * const argv[])762e192b24SSimon Glass static int do_cpu_detail(cmd_tbl_t *cmdtp, int flag, int argc,
772e192b24SSimon Glass char *const argv[])
782e192b24SSimon Glass {
792e192b24SSimon Glass if (print_cpu_list(true))
802e192b24SSimon Glass return CMD_RET_FAILURE;
812e192b24SSimon Glass
822e192b24SSimon Glass return 0;
832e192b24SSimon Glass }
842e192b24SSimon Glass
852e192b24SSimon Glass static cmd_tbl_t cmd_cpu_sub[] = {
862e192b24SSimon Glass U_BOOT_CMD_MKENT(list, 2, 1, do_cpu_list, "", ""),
872e192b24SSimon Glass U_BOOT_CMD_MKENT(detail, 4, 0, do_cpu_detail, "", ""),
882e192b24SSimon Glass };
892e192b24SSimon Glass
902e192b24SSimon Glass /*
912e192b24SSimon Glass * Process a cpu sub-command
922e192b24SSimon Glass */
do_cpu(cmd_tbl_t * cmdtp,int flag,int argc,char * const argv[])932e192b24SSimon Glass static int do_cpu(cmd_tbl_t *cmdtp, int flag, int argc,
942e192b24SSimon Glass char * const argv[])
952e192b24SSimon Glass {
962e192b24SSimon Glass cmd_tbl_t *c = NULL;
972e192b24SSimon Glass
982e192b24SSimon Glass /* Strip off leading 'cpu' command argument */
992e192b24SSimon Glass argc--;
1002e192b24SSimon Glass argv++;
1012e192b24SSimon Glass
1022e192b24SSimon Glass if (argc)
103320eca5cSÁlvaro Fernández Rojas c = find_cmd_tbl(argv[0], cmd_cpu_sub,
104320eca5cSÁlvaro Fernández Rojas ARRAY_SIZE(cmd_cpu_sub));
1052e192b24SSimon Glass
1062e192b24SSimon Glass if (c)
1072e192b24SSimon Glass return c->cmd(cmdtp, flag, argc, argv);
1082e192b24SSimon Glass else
1092e192b24SSimon Glass return CMD_RET_USAGE;
1102e192b24SSimon Glass }
1112e192b24SSimon Glass
1122e192b24SSimon Glass U_BOOT_CMD(
1132e192b24SSimon Glass cpu, 2, 1, do_cpu,
1142e192b24SSimon Glass "display information about CPUs",
1152e192b24SSimon Glass "list - list available CPUs\n"
1162e192b24SSimon Glass "cpu detail - show CPU detail"
1172e192b24SSimon Glass );
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