89 lines
2.0 KiB
C
89 lines
2.0 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* The 'sbi' command displays information about the SBI implementation.
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*
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* Copyright (c) 2020, Heinrich Schuchardt <xypron.glpk@gmx.de>
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*/
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#include <common.h>
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#include <command.h>
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#include <asm/sbi.h>
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struct sbi_imp {
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const long id;
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const char *name;
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};
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struct sbi_ext {
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const u32 id;
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const char *name;
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};
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static struct sbi_imp implementations[] = {
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{ 0, "Berkeley Boot Loader (BBL)" },
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{ 1, "OpenSBI" },
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{ 2, "Xvisor" },
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{ 3, "KVM" },
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{ 4, "RustSBI" },
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{ 5, "Diosix" },
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};
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static struct sbi_ext extensions[] = {
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{ 0x00000000, "sbi_set_timer" },
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{ 0x00000001, "sbi_console_putchar" },
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{ 0x00000002, "sbi_console_getchar" },
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{ 0x00000003, "sbi_clear_ipi" },
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{ 0x00000004, "sbi_send_ipi" },
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{ 0x00000005, "sbi_remote_fence_i" },
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{ 0x00000006, "sbi_remote_sfence_vma" },
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{ 0x00000007, "sbi_remote_sfence_vma_asid" },
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{ 0x00000008, "sbi_shutdown" },
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{ 0x00000010, "SBI Base Functionality" },
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{ 0x54494D45, "Timer Extension" },
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{ 0x00735049, "IPI Extension" },
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{ 0x52464E43, "RFENCE Extension" },
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{ 0x0048534D, "Hart State Management Extension" },
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{ 0x53525354, "System Reset Extension" },
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};
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static int do_sbi(struct cmd_tbl *cmdtp, int flag, int argc,
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char *const argv[])
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{
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int i;
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long ret;
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ret = sbi_get_spec_version();
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if (ret >= 0)
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printf("SBI %ld.%ld\n", ret >> 24, ret & 0xffffff);
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ret = sbi_get_impl_id();
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if (ret >= 0) {
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for (i = 0; i < ARRAY_SIZE(implementations); ++i) {
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if (ret == implementations[i].id) {
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printf("%s\n", implementations[i].name);
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break;
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}
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}
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if (i == ARRAY_SIZE(implementations))
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printf("Unknown implementation ID %ld\n", ret);
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}
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printf("Extensions:\n");
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for (i = 0; i < ARRAY_SIZE(extensions); ++i) {
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ret = sbi_probe_extension(extensions[i].id);
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if (ret > 0)
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printf(" %s\n", extensions[i].name);
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}
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return 0;
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}
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#ifdef CONFIG_SYS_LONGHELP
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static char sbi_help_text[] =
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"- display SBI spec version, implementation, and available extensions";
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#endif
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U_BOOT_CMD_COMPLETE(
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sbi, 1, 0, do_sbi,
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"display SBI information",
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sbi_help_text, NULL
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);
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