1// SPDX-License-Identifier: GPL-2.0+ 2/* 3 * The 'sbi' command displays information about the SBI implementation. 4 * 5 * Copyright (c) 2020, Heinrich Schuchardt <xypron.glpk@gmx.de> 6 */ 7 8#include <common.h> 9#include <command.h> 10#include <asm/sbi.h> 11 12struct sbi_imp { 13 const long id; 14 const char *name; 15}; 16 17struct sbi_ext { 18 const u32 id; 19 const char *name; 20}; 21 22static struct sbi_imp implementations[] = { 23 { 0, "Berkeley Boot Loader (BBL)" }, 24 { 1, "OpenSBI" }, 25 { 2, "Xvisor" }, 26 { 3, "KVM" }, 27 { 4, "RustSBI" }, 28 { 5, "Diosix" }, 29 { 6, "Coffer" }, 30 { 7, "Xen Project" }, 31 { 8, "PolarFire Hart Software Services" }, 32 { 9, "coreboot" }, 33 { 10, "oreboot" }, 34}; 35 36static struct sbi_ext extensions[] = { 37 { SBI_EXT_0_1_SET_TIMER, "Set Timer" }, 38 { SBI_EXT_0_1_CONSOLE_PUTCHAR, "Console Putchar" }, 39 { SBI_EXT_0_1_CONSOLE_GETCHAR, "Console Getchar" }, 40 { SBI_EXT_0_1_CLEAR_IPI, "Clear IPI" }, 41 { SBI_EXT_0_1_SEND_IPI, "Send IPI" }, 42 { SBI_EXT_0_1_REMOTE_FENCE_I, "Remote FENCE.I" }, 43 { SBI_EXT_0_1_REMOTE_SFENCE_VMA, "Remote SFENCE.VMA" }, 44 { SBI_EXT_0_1_REMOTE_SFENCE_VMA_ASID, "Remote SFENCE.VMA with ASID" }, 45 { SBI_EXT_0_1_SHUTDOWN, "System Shutdown" }, 46 { SBI_EXT_BASE, "SBI Base Functionality" }, 47 { SBI_EXT_TIME, "Timer Extension" }, 48 { SBI_EXT_IPI, "IPI Extension" }, 49 { SBI_EXT_RFENCE, "RFENCE Extension" }, 50 { SBI_EXT_HSM, "Hart State Management Extension" }, 51 { SBI_EXT_SRST, "System Reset Extension" }, 52 { SBI_EXT_PMU, "Performance Monitoring Unit Extension" }, 53 { SBI_EXT_DBCN, "Debug Console Extension" }, 54 { SBI_EXT_SUSP, "System Suspend Extension" }, 55 { SBI_EXT_CPPC, "Collaborative Processor Performance Control Extension" }, 56 { SBI_EXT_NACL, "Nested Acceleration Extension" }, 57 { SBI_EXT_STA, "Steal-time Accounting Extension" }, 58 { SBI_EXT_DBTR, "Debug Trigger Extension" }, 59 { SBI_EXT_SSE, "Supervisor Software Events" }, 60}; 61 62static int do_sbi(struct cmd_tbl *cmdtp, int flag, int argc, 63 char *const argv[]) 64{ 65 int i, impl_id; 66 long ret; 67 long mvendorid, marchid, mimpid; 68 69 ret = sbi_get_spec_version(); 70 if (ret < 0) { 71 printf("No SBI 0.2+\n"); 72 return CMD_RET_FAILURE; 73 } 74 printf("SBI %ld.%ld", ret >> 24, ret & 0xffffff); 75 impl_id = sbi_get_impl_id(); 76 if (impl_id >= 0) { 77 for (i = 0; i < ARRAY_SIZE(implementations); ++i) { 78 if (impl_id == implementations[i].id) { 79 long vers; 80 81 printf("\n%s ", implementations[i].name); 82 ret = sbi_get_impl_version(&vers); 83 if (ret < 0) 84 break; 85 switch (impl_id) { 86 case 1: /* OpenSBI */ 87 case 8: /* PolarFire Hart Software Services */ 88 printf("%ld.%ld", 89 vers >> 16, vers & 0xffff); 90 break; 91 case 3: /* KVM */ 92 case 4: /* RustSBI */ 93 printf("%ld.%ld.%ld", 94 vers >> 16, 95 (vers >> 8) & 0xff, 96 vers & 0xff); 97 break; 98 default: 99 printf("0x%lx", vers); 100 break; 101 } 102 break; 103 } 104 } 105 if (i == ARRAY_SIZE(implementations)) 106 printf("\nUnknown implementation ID 0x%x", impl_id); 107 } 108 printf("\nMachine:\n"); 109 ret = sbi_get_mvendorid(&mvendorid); 110 if (!ret) 111 printf(" Vendor ID %lx\n", mvendorid); 112 ret = sbi_get_marchid(&marchid); 113 if (!ret) 114 printf(" Architecture ID %lx\n", marchid); 115 ret = sbi_get_mimpid(&mimpid); 116 if (!ret) 117 printf(" Implementation ID %lx\n", mimpid); 118 printf("Extensions:\n"); 119 for (i = 0; i < ARRAY_SIZE(extensions); ++i) { 120 ret = sbi_probe_extension(extensions[i].id); 121 if (ret > 0) 122 printf(" %s\n", extensions[i].name); 123 } 124 return 0; 125} 126 127U_BOOT_LONGHELP(sbi, 128 "- display SBI spec version, implementation, and available extensions"); 129 130U_BOOT_CMD_COMPLETE( 131 sbi, 1, 0, do_sbi, 132 "display SBI information", 133 sbi_help_text, NULL 134); 135