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https://github.com/AsahiLinux/u-boot
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7906155ed3
OpenSBI already implements some extensions that are not ratified yet: * Debug Console Extension (DBCN) * System Suspend Extension (SUSP) * Collaborative Processor Performance Control Extension (CPPC) Allow the sbi command to display these. Provide the FID definitions of the Debug Console Extension. We can use that extension for an early debug console driver. Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com> Reviewed-by: Leo Yu-Chi Liang <ycliang@andestech.com>
128 lines
3.3 KiB
C
128 lines
3.3 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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{ 6, "Coffer" },
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};
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static struct sbi_ext extensions[] = {
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{ SBI_EXT_0_1_SET_TIMER, "Set Timer" },
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{ SBI_EXT_0_1_CONSOLE_PUTCHAR, "Console Putchar" },
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{ SBI_EXT_0_1_CONSOLE_GETCHAR, "Console Getchar" },
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{ SBI_EXT_0_1_CLEAR_IPI, "Clear IPI" },
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{ SBI_EXT_0_1_SEND_IPI, "Send IPI" },
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{ SBI_EXT_0_1_REMOTE_FENCE_I, "Remote FENCE.I" },
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{ SBI_EXT_0_1_REMOTE_SFENCE_VMA, "Remote SFENCE.VMA" },
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{ SBI_EXT_0_1_REMOTE_SFENCE_VMA_ASID, "Remote SFENCE.VMA with ASID" },
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{ SBI_EXT_0_1_SHUTDOWN, "System Shutdown" },
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{ SBI_EXT_BASE, "SBI Base Functionality" },
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{ SBI_EXT_TIME, "Timer Extension" },
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{ SBI_EXT_IPI, "IPI Extension" },
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{ SBI_EXT_RFENCE, "RFENCE Extension" },
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{ SBI_EXT_HSM, "Hart State Management Extension" },
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{ SBI_EXT_SRST, "System Reset Extension" },
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{ SBI_EXT_PMU, "Performance Monitoring Unit Extension" },
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{ SBI_EXT_DBCN, "Debug Console Extension" },
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{ SBI_EXT_SUSP, "System Suspend Extension" },
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{ SBI_EXT_CPPC, "Collaborative Processor Performance Control 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, impl_id;
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long ret;
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long mvendorid, marchid, mimpid;
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ret = sbi_get_spec_version();
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if (ret < 0) {
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printf("No SBI 0.2+\n");
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return CMD_RET_FAILURE;
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}
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printf("SBI %ld.%ld", ret >> 24, ret & 0xffffff);
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impl_id = sbi_get_impl_id();
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if (impl_id >= 0) {
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for (i = 0; i < ARRAY_SIZE(implementations); ++i) {
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if (impl_id == implementations[i].id) {
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long vers;
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printf("\n%s ", implementations[i].name);
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ret = sbi_get_impl_version(&vers);
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if (ret < 0)
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break;
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switch (impl_id) {
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case 1: /* OpenSBI */
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printf("%ld.%ld",
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vers >> 16, vers & 0xffff);
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break;
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case 3: /* KVM */
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case 4: /* RustSBI */
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printf("%ld.%ld.%ld",
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vers >> 16,
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(vers >> 8) & 0xff,
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vers & 0xff);
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break;
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default:
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printf("0x%lx", vers);
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break;
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}
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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", ret);
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}
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printf("\nMachine:\n");
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ret = sbi_get_mvendorid(&mvendorid);
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if (!ret)
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printf(" Vendor ID %lx\n", mvendorid);
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ret = sbi_get_marchid(&marchid);
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if (!ret)
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printf(" Architecture ID %lx\n", marchid);
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ret = sbi_get_mimpid(&mimpid);
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if (!ret)
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printf(" Implementation ID %lx\n", mimpid);
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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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