| Vitaly Andrianov | 7bcf4d6 | 2014-04-04 13:16:53 -0400 | [diff] [blame] | 1 | /* |
| 2 | * K2HK: secure kernel command file |
| 3 | * |
| 4 | * (C) Copyright 2012-2014 |
| 5 | * Texas Instruments Incorporated, <www.ti.com> |
| 6 | * |
| 7 | * SPDX-License-Identifier: GPL-2.0+ |
| 8 | */ |
| 9 | |
| 10 | #include <common.h> |
| 11 | #include <command.h> |
| 12 | asm(".arch_extension sec\n\t"); |
| 13 | |
| 14 | static int mon_install(u32 addr, u32 dpsc, u32 freq) |
| 15 | { |
| 16 | int result; |
| 17 | |
| 18 | __asm__ __volatile__ ( |
| 19 | "stmfd r13!, {lr}\n" |
| 20 | "mov r0, %1\n" |
| 21 | "mov r1, %2\n" |
| 22 | "mov r2, %3\n" |
| 23 | "blx r0\n" |
| 24 | "ldmfd r13!, {lr}\n" |
| 25 | : "=&r" (result) |
| 26 | : "r" (addr), "r" (dpsc), "r" (freq) |
| 27 | : "cc", "r0", "r1", "r2", "memory"); |
| 28 | return result; |
| 29 | } |
| 30 | |
| 31 | static int do_mon_install(cmd_tbl_t *cmdtp, int flag, int argc, |
| 32 | char * const argv[]) |
| 33 | { |
| 34 | u32 addr, dpsc_base = 0x1E80000, freq; |
| 35 | int rcode = 0; |
| 36 | |
| 37 | if (argc < 2) |
| 38 | return CMD_RET_USAGE; |
| 39 | |
| 40 | freq = clk_get_rate(sys_clk0_6_clk); |
| 41 | |
| 42 | addr = simple_strtoul(argv[1], NULL, 16); |
| 43 | |
| 44 | rcode = mon_install(addr, dpsc_base, freq); |
| 45 | printf("## installed monitor, freq [%d], status %d\n", |
| 46 | freq, rcode); |
| 47 | |
| 48 | return 0; |
| 49 | } |
| 50 | |
| 51 | U_BOOT_CMD(mon_install, 2, 0, do_mon_install, |
| 52 | "Install boot kernel at 'addr'", |
| 53 | "" |
| 54 | ); |
| 55 | |
| 56 | static void core_spin(void) |
| 57 | { |
| 58 | while (1) |
| 59 | ; /* forever */; |
| 60 | } |
| 61 | |
| 62 | int mon_power_on(int core_id, void *ep) |
| 63 | { |
| 64 | int result; |
| 65 | |
| 66 | asm volatile ( |
| 67 | "stmfd r13!, {lr}\n" |
| 68 | "mov r1, %1\n" |
| 69 | "mov r2, %2\n" |
| 70 | "mov r0, #0\n" |
| 71 | "smc #0\n" |
| 72 | "ldmfd r13!, {lr}\n" |
| 73 | : "=&r" (result) |
| 74 | : "r" (core_id), "r" (ep) |
| 75 | : "cc", "r0", "r1", "r2", "memory"); |
| 76 | return result; |
| 77 | } |
| 78 | |
| 79 | int mon_power_off(int core_id) |
| 80 | { |
| 81 | int result; |
| 82 | |
| 83 | asm volatile ( |
| 84 | "stmfd r13!, {lr}\n" |
| 85 | "mov r1, %1\n" |
| 86 | "mov r0, #1\n" |
| 87 | "smc #1\n" |
| 88 | "ldmfd r13!, {lr}\n" |
| 89 | : "=&r" (result) |
| 90 | : "r" (core_id) |
| 91 | : "cc", "r0", "r1", "memory"); |
| 92 | return result; |
| 93 | } |
| 94 | |
| 95 | int do_mon_power(cmd_tbl_t *cmdtp, int flag, int argc, |
| 96 | char * const argv[]) |
| 97 | { |
| 98 | int rcode = 0, core_id, on; |
| 99 | void (*fn)(void); |
| 100 | |
| 101 | fn = core_spin; |
| 102 | |
| 103 | if (argc < 3) |
| 104 | return CMD_RET_USAGE; |
| 105 | |
| 106 | core_id = simple_strtoul(argv[1], NULL, 16); |
| 107 | on = simple_strtoul(argv[2], NULL, 16); |
| 108 | |
| 109 | if (on) |
| 110 | rcode = mon_power_on(core_id, fn); |
| 111 | else |
| 112 | rcode = mon_power_off(core_id); |
| 113 | |
| 114 | if (on) { |
| 115 | if (!rcode) |
| 116 | printf("core %d powered on successfully\n", core_id); |
| 117 | else |
| 118 | printf("core %d power on failure\n", core_id); |
| 119 | } else { |
| 120 | printf("core %d powered off successfully\n", core_id); |
| 121 | } |
| 122 | |
| 123 | return 0; |
| 124 | } |
| 125 | |
| 126 | U_BOOT_CMD(mon_power, 3, 0, do_mon_power, |
| 127 | "Power On/Off secondary core", |
| 128 | "mon_power <coreid> <oper>\n" |
| 129 | "- coreid (1-3) and oper (1 - ON, 0 - OFF)\n" |
| 130 | "" |
| 131 | ); |