4dc85f11d1
Change-Id: Ie11fffdf907227ab315bfd4887aaa5de3602bd24 Signed-off-by: Angel Pons <th3fanbus@gmail.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/50376 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Arthur Heymans <arthur@aheymans.xyz> Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
40 lines
789 B
C
40 lines
789 B
C
/* SPDX-License-Identifier: GPL-2.0-only */
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#define __SIMPLE_DEVICE__
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#include <console/console.h>
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#include <device/pci_def.h>
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#include <device/pci_ops.h>
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#include <security/vboot/vbnv.h>
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#include <pc80/mc146818rtc.h>
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#include <elog.h>
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#include "pmutil.h"
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#include "rtc.h"
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#define PCH_LPC_DEV PCI_DEV(0, 0x1f, 0)
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int rtc_failure(void)
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{
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return !!(pci_read_config8(PCH_LPC_DEV, D31F0_GEN_PMCON_3) & RTC_BATTERY_DEAD);
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}
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void sb_rtc_init(void)
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{
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int rtc_failed = rtc_failure();
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if (rtc_failed) {
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if (CONFIG(ELOG))
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elog_add_event(ELOG_TYPE_RTC_RESET);
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pci_update_config8(PCH_LPC_DEV, D31F0_GEN_PMCON_3,
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~RTC_BATTERY_DEAD, 0);
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}
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printk(BIOS_DEBUG, "RTC: failed = 0x%x\n", rtc_failed);
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cmos_init(rtc_failed);
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}
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int vbnv_cmos_failed(void)
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{
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return rtc_failure();
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}
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