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#include <common.h>
#define FUNCID_UPDATE_TEE_TRACE_LEVEL 0xb2000016
#define __asmeq(x, y) ".ifnc " x "," y " ; .err ; .endif\n\t"
static int atoi(const char* str)
{
int ret = 0;
if (!str)
return ret;
while ( *str != '\0') {
if (('0' <= *str) && (*str <= '9')) {
ret = ret * 10 + (*str++ - '0');
} else {
ret = 0;
break;
}
}
return ret;
}
static uint32_t update_log_level(uint32_t log_level)
{
register uint32_t x0 asm("x0") = FUNCID_UPDATE_TEE_TRACE_LEVEL;
register uint32_t x1 asm("x1") = log_level;
do {
asm volatile(
__asmeq("%0", "x0")
__asmeq("%1", "x0")
__asmeq("%2", "x1")
"smc #0\n"
: "=r"(x0)
: "r"(x0), "r"(x1));
} while (0);
return x0;
}
int exec(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
uint32_t log_level = 0;
uint32_t updated_log_level = 0;
if (argc != 2) {
printf("BL33: parameter error,\n"
"Usage:\ntee_log_level [log_level],\n"
"the min log level is 1, and the max log level is related to"
" Secure OS version\n");
return 0;
}
log_level = atoi(argv[1]);
updated_log_level = update_log_level(log_level);
if (log_level < updated_log_level) {
printf("BL33: the min log level is %d\n", updated_log_level);
} else if (log_level > updated_log_level) {
printf("BL33: the max log level is %d\n", updated_log_level);
}
printf("BL33: the updated log level is %d\n", updated_log_level);
return 0;
}
/* -------------------------------------------------------------------- */
U_BOOT_CMD(
tee_log_level, CONFIG_SYS_MAXARGS, 0, exec,
"update tee log level",
"[log_level],\nthe min log level is 1, and the max log level is"
" related to Secure OS version"
);
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