diff options
| -rw-r--r-- | post/board/lwmon5/watchdog.c | 43 |
1 files changed, 24 insertions, 19 deletions
diff --git a/post/board/lwmon5/watchdog.c b/post/board/lwmon5/watchdog.c index 8348346..48ff687 100644 --- a/post/board/lwmon5/watchdog.c +++ b/post/board/lwmon5/watchdog.c @@ -24,7 +24,8 @@ #include <common.h> -/* This test verifies if the reason of last reset was an abnormal voltage +/* + * This test verifies if the reason of last reset was an abnormal voltage * condition, than it performs watchdog test, measuing time required to * trigger watchdog reset. */ @@ -55,7 +56,8 @@ static void watchdog_magic_write(uint value) int sysmon1_post_test(int flags) { if (gpio_read_in_bit(CFG_GPIO_SYSMON_STATUS)) { - /* 3.1. GPIO62 is low + /* + * 3.1. GPIO62 is low * Assuming system voltage failure. */ post_log("Abnormal voltage detected (GPIO62)\n"); @@ -67,11 +69,14 @@ int sysmon1_post_test(int flags) int lwmon5_watchdog_post_test(int flags) { + ulong time; + /* On each reset scratch register 1 should be tested, * but first test GPIO62: */ if (!(flags & POST_MANUAL) && sysmon1_post_test(flags)) { - /* 3.1. GPIO62 is low + /* + * 3.1. GPIO62 is low * Assuming system voltage failure. */ /* 3.1.1. Set scratch register 1 to 0x0000xxxx */ @@ -81,12 +86,12 @@ int lwmon5_watchdog_post_test(int flags) } if (watchdog_magic_read() != CFG_WATCHDOG_MAGIC) { - /* 3.2. Scratch register 1 differs from magic value 0x1248xxxx + /* + * 3.2. Scratch register 1 differs from magic value 0x1248xxxx * Assuming PowerOn */ int ints; ulong base; - ulong time; /* 3.2.1. Set magic value to scratch register */ watchdog_magic_write(CFG_WATCHDOG_MAGIC); @@ -104,28 +109,28 @@ int lwmon5_watchdog_post_test(int flags) if (ints) enable_interrupts (); - /* 3.2.5. Reset didn't happen. - Set 0x0000xxxx + /* + * 3.2.5. Reset didn't happen. - Set 0x0000xxxx * into scratch register 1 */ watchdog_magic_write(0); /* 3.2.6. Mark test as failed. */ post_log("hw watchdog time : %u ms, failed ", time); return 2; - } else { - /* 3.3. Scratch register matches magic value 0x1248xxxx - * Assume this is watchdog-initiated reset - */ - ulong time; - /* 3.3.1. So, the test succeed, save measured time to syslog. */ - time = in_be32((void *)CFG_WATCHDOG_TIME_ADDR); - post_log("hw watchdog time : %u ms, passed ", time); - /* 3.3.2. Set scratch register 1 to 0x0000xxxx */ - watchdog_magic_write(0); - return 0; } - return -1; -} + /* + * 3.3. Scratch register matches magic value 0x1248xxxx + * Assume this is watchdog-initiated reset + */ + /* 3.3.1. So, the test succeed, save measured time to syslog. */ + time = in_be32((void *)CFG_WATCHDOG_TIME_ADDR); + post_log("hw watchdog time : %u ms, passed ", time); + /* 3.3.2. Set scratch register 1 to 0x0000xxxx */ + watchdog_magic_write(0); + + return 0; +} #endif /* CONFIG_POST & CFG_POST_WATCHDOG */ #endif /* CONFIG_POST */ |