diff options
Diffstat (limited to 'cmd/riscv/sbi.c')
| -rw-r--r-- | cmd/riscv/sbi.c | 136 |
1 files changed, 136 insertions, 0 deletions
diff --git a/cmd/riscv/sbi.c b/cmd/riscv/sbi.c new file mode 100644 index 00000000000..b013c8c8d4e --- /dev/null +++ b/cmd/riscv/sbi.c @@ -0,0 +1,136 @@ +// 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 <command.h> +#include <asm/sbi.h> + +struct sbi_imp { + const long id; + const char *name; +}; + +struct sbi_ext { + const u32 id; + const char *name; +}; + +static struct sbi_imp implementations[] = { + { 0, "Berkeley Boot Loader (BBL)" }, + { 1, "OpenSBI" }, + { 2, "Xvisor" }, + { 3, "KVM" }, + { 4, "RustSBI" }, + { 5, "Diosix" }, + { 6, "Coffer" }, + { 7, "Xen Project" }, + { 8, "PolarFire Hart Software Services" }, + { 9, "coreboot" }, + { 10, "oreboot" }, + { 11, "bhyve" }, +}; + +static struct sbi_ext extensions[] = { + { SBI_EXT_0_1_SET_TIMER, "Set Timer" }, + { SBI_EXT_0_1_CONSOLE_PUTCHAR, "Console Putchar" }, + { SBI_EXT_0_1_CONSOLE_GETCHAR, "Console Getchar" }, + { SBI_EXT_0_1_CLEAR_IPI, "Clear IPI" }, + { SBI_EXT_0_1_SEND_IPI, "Send IPI" }, + { SBI_EXT_0_1_REMOTE_FENCE_I, "Remote FENCE.I" }, + { SBI_EXT_0_1_REMOTE_SFENCE_VMA, "Remote SFENCE.VMA" }, + { SBI_EXT_0_1_REMOTE_SFENCE_VMA_ASID, "Remote SFENCE.VMA with ASID" }, + { SBI_EXT_0_1_SHUTDOWN, "System Shutdown" }, + { SBI_EXT_BASE, "SBI Base Functionality" }, + { SBI_EXT_TIME, "Timer Extension" }, + { SBI_EXT_IPI, "IPI Extension" }, + { SBI_EXT_RFENCE, "RFENCE Extension" }, + { SBI_EXT_HSM, "Hart State Management Extension" }, + { SBI_EXT_SRST, "System Reset Extension" }, + { SBI_EXT_PMU, "Performance Monitoring Unit Extension" }, + { SBI_EXT_DBCN, "Debug Console Extension" }, + { SBI_EXT_SUSP, "System Suspend Extension" }, + { SBI_EXT_CPPC, "Collaborative Processor Performance Control Extension" }, + { SBI_EXT_NACL, "Nested Acceleration Extension" }, + { SBI_EXT_STA, "Steal-time Accounting Extension" }, + { SBI_EXT_SSE, "Supervisor Software Events" }, + { SBI_EXT_FWFT, "Firmware Features Extension" }, + { SBI_EXT_DBTR, "Debug Triggers Extension" }, + { SBI_EXT_MPXY, "Message Proxy Extension" }, +}; + +static int do_sbi(struct cmd_tbl *cmdtp, int flag, int argc, + char *const argv[]) +{ + int i, impl_id; + long ret; + long mvendorid, marchid, mimpid; + + ret = sbi_get_spec_version(); + if (ret < 0) { + printf("No SBI 0.2+\n"); + return CMD_RET_FAILURE; + } + printf("SBI %ld.%ld", ret >> 24, ret & 0xffffff); + impl_id = sbi_get_impl_id(); + if (impl_id >= 0) { + for (i = 0; i < ARRAY_SIZE(implementations); ++i) { + if (impl_id == implementations[i].id) { + long vers; + + printf("\n%s ", implementations[i].name); + ret = sbi_get_impl_version(&vers); + if (ret < 0) + break; + switch (impl_id) { + case 1: /* OpenSBI */ + case 8: /* PolarFire Hart Software Services */ + printf("%ld.%ld", + vers >> 16, vers & 0xffff); + break; + case 3: /* KVM */ + case 4: /* RustSBI */ + printf("%ld.%ld.%ld", + vers >> 16, + (vers >> 8) & 0xff, + vers & 0xff); + break; + default: + printf("0x%lx", vers); + break; + } + break; + } + } + if (i == ARRAY_SIZE(implementations)) + printf("\nUnknown implementation ID 0x%x", impl_id); + } + printf("\nMachine:\n"); + ret = sbi_get_mvendorid(&mvendorid); + if (!ret) + printf(" Vendor ID %lx\n", mvendorid); + ret = sbi_get_marchid(&marchid); + if (!ret) + printf(" Architecture ID %lx\n", marchid); + ret = sbi_get_mimpid(&mimpid); + if (!ret) + printf(" Implementation ID %lx\n", mimpid); + 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; +} + +U_BOOT_LONGHELP(sbi, + "- display SBI spec version, implementation, and available extensions"); + +U_BOOT_CMD_COMPLETE( + sbi, 1, 0, do_sbi, + "display SBI information", + sbi_help_text, NULL +); |