| * Wolfgang Denk, DENX Software Engineering, wd@denx.de. |
| * SPDX-License-Identifier: GPL-2.0+ |
| * The test verifies the watchdog timer operation. |
| * On the first iteration, the test routine disables interrupts and |
| * makes a 10-second delay. If the system does not reboot during this delay, |
| * the watchdog timer is not operational and the test fails. If the system |
| * reboots, on the second iteration the test routine reports a success. |
| #if CONFIG_POST & CONFIG_SYS_POST_WATCHDOG |
| static ulong gettbl (void) |
| asm ("mftbl %0":"=r" (r)); |
| int watchdog_post_test (int flags) |
| if (flags & POST_REBOOT) { |
| int ints = disable_interrupts (); |
| ulong clk = get_tbclk (); |
| while ((gettbl () - base) / 10 < clk); |
| * If we have reached this point, the watchdog timer |
| #endif /* CONFIG_POST & CONFIG_SYS_POST_WATCHDOG */ |