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author | Ahmad Fatoum <ahmad@a3f.at> | 2019-11-15 08:52:53 +0100 |
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committer | Sascha Hauer <s.hauer@pengutronix.de> | 2019-11-19 11:57:25 +0100 |
commit | d5f14e585c4d07e913f8f52ebd0f22d4d808bee5 (patch) | |
tree | 0feb5b64dfcd058ac0a68feca2441b1ce861b85b /arch/arm/cpu/psci.c | |
parent | 390bc7834ffcee9fe9b94babf0f313bcc4d3b42d (diff) | |
download | barebox-d5f14e585c4d07e913f8f52ebd0f22d4d808bee5.tar.gz barebox-d5f14e585c4d07e913f8f52ebd0f22d4d808bee5.tar.xz |
ARM: psci: factor out smc command into commands/
So far, the smc command was only usable when barebox also provides the
secure monitor. It's useful to have it when barebox is a PSCI consumer
as well to test whether the secure monitor works.
Factor out the code into commands/ in preparation to do so.
No functional change.
Signed-off-by: Ahmad Fatoum <ahmad@a3f.at>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'arch/arm/cpu/psci.c')
-rw-r--r-- | arch/arm/cpu/psci.c | 105 |
1 files changed, 0 insertions, 105 deletions
diff --git a/arch/arm/cpu/psci.c b/arch/arm/cpu/psci.c index 22ce1dfd0e..713ab2396c 100644 --- a/arch/arm/cpu/psci.c +++ b/arch/arm/cpu/psci.c @@ -227,108 +227,3 @@ static int armv7_psci_init(void) return of_register_fixup(of_psci_do_fixup, NULL); } device_initcall(armv7_psci_init); - -#ifdef CONFIG_ARM_PSCI_DEBUG - -#include <command.h> -#include <getopt.h> -#include "mmu.h" - -void second_entry(void) -{ - struct arm_smccc_res res; - - psci_printf("2nd CPU online, now turn off again\n"); - - arm_smccc_smc(ARM_PSCI_0_2_FN_CPU_OFF, - 0, 0, 0, 0, 0, 0, 0, &res); - - psci_printf("2nd CPU still alive?\n"); - - while (1); -} - -static const char *psci_xlate_str(long err) -{ - static char errno_string[sizeof "error 0x123456789ABCDEF0"]; - - switch(err) - { - case ARM_PSCI_RET_SUCCESS: - return "Success"; - case ARM_PSCI_RET_NOT_SUPPORTED: - return "Operation not supported"; - case ARM_PSCI_RET_INVAL: - return "Invalid argument"; - case ARM_PSCI_RET_DENIED: - return "Operation not permitted"; - case ARM_PSCI_RET_ALREADY_ON: - return "CPU already on"; - case ARM_PSCI_RET_ON_PENDING: - return "CPU_ON in progress"; - case ARM_PSCI_RET_INTERNAL_FAILURE: - return "Internal failure"; - case ARM_PSCI_RET_NOT_PRESENT: - return "Trusted OS not present on core"; - case ARM_PSCI_RET_DISABLED: - return "CPU is disabled"; - case ARM_PSCI_RET_INVALID_ADDRESS: - return "Bad address"; - } - - sprintf(errno_string, "error 0x%lx", err); - return errno_string; -} - -static int do_smc(int argc, char *argv[]) -{ - long ret; - int opt; - struct arm_smccc_res res = { - .a0 = 0xdeadbee0, - .a1 = 0xdeadbee1, - .a2 = 0xdeadbee2, - .a3 = 0xdeadbee3, - }; - - if (argc < 2) - return COMMAND_ERROR_USAGE; - - while ((opt = getopt(argc, argv, "nic")) > 0) { - switch (opt) { - case 'n': - armv7_secure_monitor_install(); - break; - case 'i': - arm_smccc_smc(ARM_PSCI_0_2_FN_PSCI_VERSION, - 0, 0, 0, 0, 0, 0, 0, &res); - printf("found psci version %ld.%ld\n", res.a0 >> 16, res.a0 & 0xffff); - break; - case 'c': - arm_smccc_smc(ARM_PSCI_0_2_FN_CPU_ON, - 1, (unsigned long)second_entry, 0, 0, 0, 0, 0, &res); - ret = (long)res.a0; - printf("CPU_ON returns with: %s\n", psci_xlate_str(ret)); - if (ret) - return COMMAND_ERROR; - } - } - - - return 0; -} -BAREBOX_CMD_HELP_START(smc) -BAREBOX_CMD_HELP_TEXT("Secure monitor code test command") -BAREBOX_CMD_HELP_TEXT("") -BAREBOX_CMD_HELP_TEXT("Options:") -BAREBOX_CMD_HELP_OPT ("-n", "Install secure monitor and switch to nonsecure mode") -BAREBOX_CMD_HELP_OPT ("-i", "Show information about installed PSCI version") -BAREBOX_CMD_HELP_OPT ("-c", "Start secondary CPU core") -BAREBOX_CMD_HELP_END - -BAREBOX_CMD_START(smc) - .cmd = do_smc, - BAREBOX_CMD_DESC("secure monitor test command") - BAREBOX_CMD_GROUP(CMD_GRP_MISC) -BAREBOX_CMD_END -#endif |