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https://github.com/AsahiLinux/u-boot
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83d290c56f
When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
192 lines
3.7 KiB
C
192 lines
3.7 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* (C) Copyright 2002
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* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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*/
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#include <common.h>
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/*
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* RTC test
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*
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* The Real Time Clock (RTC) operation is verified by this test.
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* The following features are verified:
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* o) RTC Power Fault
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* This is verified by analyzing the rtc_get() return status.
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* o) Time uniformity
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* This is verified by reading RTC in polling within
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* a short period of time.
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* o) Passing month boundaries
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* This is checked by setting RTC to a second before
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* a month boundary and reading it after its passing the
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* boundary. The test is performed for both leap- and
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* nonleap-years.
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*/
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#include <post.h>
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#include <rtc.h>
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#if CONFIG_POST & CONFIG_SYS_POST_RTC
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static int rtc_post_skip (ulong * diff)
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{
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struct rtc_time tm1;
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struct rtc_time tm2;
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ulong start1;
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ulong start2;
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rtc_get (&tm1);
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start1 = get_timer (0);
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while (1) {
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rtc_get (&tm2);
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start2 = get_timer (0);
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if (tm1.tm_sec != tm2.tm_sec)
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break;
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if (start2 - start1 > 1500)
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break;
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}
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if (tm1.tm_sec != tm2.tm_sec) {
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*diff = start2 - start1;
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return 0;
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} else {
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return -1;
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}
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}
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static void rtc_post_restore (struct rtc_time *tm, unsigned int sec)
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{
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time_t t = rtc_mktime(tm) + sec;
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struct rtc_time ntm;
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rtc_to_tm(t, &ntm);
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rtc_set (&ntm);
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}
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int rtc_post_test (int flags)
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{
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ulong diff;
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unsigned int i;
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struct rtc_time svtm;
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static unsigned int daysnl[] =
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{ 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 };
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static unsigned int daysl[] =
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{ 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 };
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unsigned int ynl = 1999;
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unsigned int yl = 2000;
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unsigned int skipped = 0;
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int reliable;
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/* Time reliability */
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reliable = rtc_get (&svtm);
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/* Time uniformity */
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if (rtc_post_skip (&diff) != 0) {
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post_log ("Timeout while waiting for a new second !\n");
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return -1;
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}
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for (i = 0; i < 5; i++) {
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if (rtc_post_skip (&diff) != 0) {
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post_log ("Timeout while waiting for a new second !\n");
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return -1;
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}
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if (diff < 950 || diff > 1050) {
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post_log ("Invalid second duration !\n");
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return -1;
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}
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}
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/* Passing month boundaries */
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if (rtc_post_skip (&diff) != 0) {
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post_log ("Timeout while waiting for a new second !\n");
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return -1;
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}
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rtc_get (&svtm);
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for (i = 0; i < 12; i++) {
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time_t t;
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struct rtc_time tm;
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tm.tm_year = ynl;
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tm.tm_mon = i + 1;
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tm.tm_mday = daysnl[i];
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tm.tm_hour = 23;
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tm.tm_min = 59;
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tm.tm_sec = 59;
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t = rtc_mktime(&tm);
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rtc_to_tm(t, &tm);
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rtc_set (&tm);
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skipped++;
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if (rtc_post_skip (&diff) != 0) {
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rtc_post_restore (&svtm, skipped);
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post_log ("Timeout while waiting for a new second !\n");
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return -1;
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}
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rtc_get (&tm);
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if (tm.tm_mon == i + 1) {
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rtc_post_restore (&svtm, skipped);
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post_log ("Month %d boundary is not passed !\n", i + 1);
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return -1;
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}
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}
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for (i = 0; i < 12; i++) {
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time_t t;
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struct rtc_time tm;
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tm.tm_year = yl;
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tm.tm_mon = i + 1;
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tm.tm_mday = daysl[i];
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tm.tm_hour = 23;
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tm.tm_min = 59;
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tm.tm_sec = 59;
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t = rtc_mktime(&tm);
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rtc_to_tm(t, &tm);
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rtc_set (&tm);
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skipped++;
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if (rtc_post_skip (&diff) != 0) {
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rtc_post_restore (&svtm, skipped);
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post_log ("Timeout while waiting for a new second !\n");
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return -1;
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}
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rtc_get (&tm);
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if (tm.tm_mon == i + 1) {
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rtc_post_restore (&svtm, skipped);
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post_log ("Month %d boundary is not passed !\n", i + 1);
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return -1;
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}
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}
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rtc_post_restore (&svtm, skipped);
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/* If come here, then RTC operates correcty, check the correctness
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* of the time it reports.
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*/
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if (reliable < 0) {
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post_log ("RTC Time is not reliable! Power fault? \n");
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return -1;
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}
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return 0;
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}
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#endif /* CONFIG_POST & CONFIG_SYS_POST_RTC */
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