1*7c073eb7SJohnny Huang /* 2*7c073eb7SJohnny Huang * This program is distributed in the hope that it will be useful, 3*7c073eb7SJohnny Huang * but WITHOUT ANY WARRANTY; without even the implied warranty of 4*7c073eb7SJohnny Huang * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 5*7c073eb7SJohnny Huang * GNU General Public License for more details. 6*7c073eb7SJohnny Huang * 7*7c073eb7SJohnny Huang * You should have received a copy of the GNU General Public License 8*7c073eb7SJohnny Huang * along with this program; if not, write to the Free Software 9*7c073eb7SJohnny Huang * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 10*7c073eb7SJohnny Huang */ 11*7c073eb7SJohnny Huang #include <stdlib.h> 12*7c073eb7SJohnny Huang #include <common.h> 13*7c073eb7SJohnny Huang #include <console.h> 14*7c073eb7SJohnny Huang #include <bootretry.h> 15*7c073eb7SJohnny Huang #include <cli.h> 16*7c073eb7SJohnny Huang #include <command.h> 17*7c073eb7SJohnny Huang #include <console.h> 18*7c073eb7SJohnny Huang #include <malloc.h> 19*7c073eb7SJohnny Huang #include <inttypes.h> 20*7c073eb7SJohnny Huang #include <mapmem.h> 21*7c073eb7SJohnny Huang #include <asm/io.h> 22*7c073eb7SJohnny Huang #include <linux/compiler.h> 23*7c073eb7SJohnny Huang 24*7c073eb7SJohnny Huang DECLARE_GLOBAL_DATA_PTR; 25*7c073eb7SJohnny Huang 26*7c073eb7SJohnny Huang #define AST_RNG_TYPE 0x1e6e2520 27*7c073eb7SJohnny Huang #define AST_RNG 0x1e6e2524 28*7c073eb7SJohnny Huang 29*7c073eb7SJohnny Huang #define PBSTR "||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||" 30*7c073eb7SJohnny Huang #define PBWIDTH 60 31*7c073eb7SJohnny Huang 32*7c073eb7SJohnny Huang void printProgress(int numerator, int denominator, char *format, ...) 33*7c073eb7SJohnny Huang { 34*7c073eb7SJohnny Huang int val = numerator * 100 / denominator; 35*7c073eb7SJohnny Huang int lpad = numerator * PBWIDTH / denominator; 36*7c073eb7SJohnny Huang int rpad = PBWIDTH - lpad; 37*7c073eb7SJohnny Huang char buffer[256]; 38*7c073eb7SJohnny Huang va_list aptr; 39*7c073eb7SJohnny Huang 40*7c073eb7SJohnny Huang va_start(aptr, format); 41*7c073eb7SJohnny Huang vsprintf(buffer, format, aptr); 42*7c073eb7SJohnny Huang va_end(aptr); 43*7c073eb7SJohnny Huang 44*7c073eb7SJohnny Huang printf("\r%3d%% [%.*s%*s] %s", val, lpad, PBSTR, rpad, "", buffer); 45*7c073eb7SJohnny Huang if (numerator == denominator) 46*7c073eb7SJohnny Huang printf("\n"); 47*7c073eb7SJohnny Huang } 48*7c073eb7SJohnny Huang 49*7c073eb7SJohnny Huang void wait_new_rng(void) 50*7c073eb7SJohnny Huang { 51*7c073eb7SJohnny Huang 52*7c073eb7SJohnny Huang int i; 53*7c073eb7SJohnny Huang // unsigned long long start, end; 54*7c073eb7SJohnny Huang // long long time; 55*7c073eb7SJohnny Huang 56*7c073eb7SJohnny Huang // start = get_ticks(); 57*7c073eb7SJohnny Huang 58*7c073eb7SJohnny Huang // take 3456 kicks time, about 2.88us 59*7c073eb7SJohnny Huang i = 200; 60*7c073eb7SJohnny Huang while (i--) { 61*7c073eb7SJohnny Huang asm(""); 62*7c073eb7SJohnny Huang } 63*7c073eb7SJohnny Huang 64*7c073eb7SJohnny Huang // end = get_ticks(); 65*7c073eb7SJohnny Huang // time = end - start; 66*7c073eb7SJohnny Huang // printf("%llu %llu %lld\n", start, end, time); 67*7c073eb7SJohnny Huang } 68*7c073eb7SJohnny Huang 69*7c073eb7SJohnny Huang static int do_ast_rng(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[]) 70*7c073eb7SJohnny Huang { 71*7c073eb7SJohnny Huang int i, j; 72*7c073eb7SJohnny Huang int type; 73*7c073eb7SJohnny Huang int len; 74*7c073eb7SJohnny Huang phys_addr_t addr; 75*7c073eb7SJohnny Huang char *buf; 76*7c073eb7SJohnny Huang 77*7c073eb7SJohnny Huang if (argc != 4) 78*7c073eb7SJohnny Huang return CMD_RET_USAGE; 79*7c073eb7SJohnny Huang type = simple_strtoul(argv[1], NULL, 16); 80*7c073eb7SJohnny Huang addr = simple_strtoul(argv[2], NULL, 16); 81*7c073eb7SJohnny Huang len = simple_strtoul(argv[3], NULL, 16); 82*7c073eb7SJohnny Huang buf = map_physmem(addr, len, MAP_WRBACK); 83*7c073eb7SJohnny Huang 84*7c073eb7SJohnny Huang if (type > 7) 85*7c073eb7SJohnny Huang return CMD_RET_USAGE; 86*7c073eb7SJohnny Huang writel((type & 0x7) << 1, AST_RNG_TYPE); 87*7c073eb7SJohnny Huang 88*7c073eb7SJohnny Huang wait_new_rng(); 89*7c073eb7SJohnny Huang 90*7c073eb7SJohnny Huang for (i = 0; i < len; i++) { 91*7c073eb7SJohnny Huang if (i % 1000 == 0) 92*7c073eb7SJohnny Huang printProgress(i, len, ""); 93*7c073eb7SJohnny Huang buf[i] = 0; 94*7c073eb7SJohnny Huang for (j = 0; j < 8; j++) { 95*7c073eb7SJohnny Huang buf[i] |= (readl(AST_RNG) & 0x1) << j; 96*7c073eb7SJohnny Huang wait_new_rng(); 97*7c073eb7SJohnny Huang } 98*7c073eb7SJohnny Huang } 99*7c073eb7SJohnny Huang 100*7c073eb7SJohnny Huang printProgress(len, len, ""); 101*7c073eb7SJohnny Huang 102*7c073eb7SJohnny Huang return CMD_RET_SUCCESS; 103*7c073eb7SJohnny Huang } 104*7c073eb7SJohnny Huang 105*7c073eb7SJohnny Huang U_BOOT_CMD( 106*7c073eb7SJohnny Huang rng, 4, 0, do_ast_rng, 107*7c073eb7SJohnny Huang "ASPEED true random number generator", 108*7c073eb7SJohnny Huang "rng <type> <addr> <len>\n" 109*7c073eb7SJohnny Huang " type: 0~7\n" 110*7c073eb7SJohnny Huang ); 111