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- // SPDX-License-Identifier: GPL-2.0+
- /*
- * The 'sbi' command displays information about the SBI implementation.
- *
- * Copyright (c) 2020, Heinrich Schuchardt <xypron.glpk@gmx.de>
- */
- #include <common.h>
- #include <command.h>
- #include <asm/sbi.h>
- struct sbi_ext {
- const u32 id;
- const char *name;
- };
- static struct sbi_ext extensions[] = {
- { 0x00000000, "sbi_set_timer" },
- { 0x00000001, "sbi_console_putchar" },
- { 0x00000002, "sbi_console_getchar" },
- { 0x00000003, "sbi_clear_ipi" },
- { 0x00000004, "sbi_send_ipi" },
- { 0x00000005, "sbi_remote_fence_i" },
- { 0x00000006, "sbi_remote_sfence_vma" },
- { 0x00000007, "sbi_remote_sfence_vma_asid" },
- { 0x00000008, "sbi_shutdown" },
- { 0x00000010, "SBI Base Functionality" },
- { 0x54494D45, "Timer Extension" },
- { 0x00735049, "IPI Extension" },
- { 0x52464E43, "RFENCE Extension" },
- { 0x0048534D, "Hart State Management Extension" },
- };
- static int do_sbi(struct cmd_tbl *cmdtp, int flag, int argc,
- char *const argv[])
- {
- int i;
- long ret;
- ret = sbi_get_spec_version();
- if (ret >= 0)
- printf("SBI %ld.%ld\n", ret >> 24, ret & 0xffffff);
- ret = sbi_get_impl_id();
- if (ret >= 0) {
- switch (ret) {
- case 0:
- printf("Berkeley Boot Loader (BBL)\n");
- break;
- case 1:
- printf("OpenSBI\n");
- break;
- case 2:
- printf("Xvisor\n");
- break;
- case 3:
- printf("KVM\n");
- break;
- default:
- printf("Unknown implementation\n");
- break;
- }
- }
- printf("Extensions:\n");
- for (i = 0; i < ARRAY_SIZE(extensions); ++i) {
- ret = sbi_probe_extension(extensions[i].id);
- if (ret > 0)
- printf(" %s\n", extensions[i].name);
- }
- return 0;
- }
- #ifdef CONFIG_SYS_LONGHELP
- static char sbi_help_text[] =
- "- display SBI spec version, implementation, and available extensions";
- #endif
- U_BOOT_CMD_COMPLETE(
- sbi, 1, 0, do_sbi,
- "display SBI information",
- sbi_help_text, NULL
- );
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