From 6e7a315eb67cb6c113cf37e1d66c4f11a51a2b3e Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 18:29:51 +0200 Subject: Adding upstream version 2.06. Signed-off-by: Daniel Baumann --- grub-core/lib/ieee1275/datetime.c | 156 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 156 insertions(+) create mode 100644 grub-core/lib/ieee1275/datetime.c (limited to 'grub-core/lib/ieee1275/datetime.c') diff --git a/grub-core/lib/ieee1275/datetime.c b/grub-core/lib/ieee1275/datetime.c new file mode 100644 index 0000000..b81fba2 --- /dev/null +++ b/grub-core/lib/ieee1275/datetime.c @@ -0,0 +1,156 @@ +/* kern/cmos_datetime.c - CMOS datetime function. + * + * GRUB -- GRand Unified Bootloader + * Copyright (C) 2008,2009 Free Software Foundation, Inc. + * + * GRUB is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * GRUB is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with GRUB. If not, see . + */ + +#include +#include +#include +#include +#if defined (__powerpc__) || defined (__sparc__) +#include +#endif + +GRUB_MOD_LICENSE ("GPLv3+"); + +static char *rtc = 0; +static int no_ieee1275_rtc = 0; + +/* Helper for find_rtc. */ +static int +find_rtc_iter (struct grub_ieee1275_devalias *alias) +{ + if (grub_strcmp (alias->type, "rtc") == 0) + { + grub_dprintf ("datetime", "Found RTC %s\n", alias->path); + rtc = grub_strdup (alias->path); + return 1; + } + return 0; +} + +static void +find_rtc (void) +{ + grub_ieee1275_devices_iterate (find_rtc_iter); + if (!rtc) + no_ieee1275_rtc = 1; +} + +grub_err_t +grub_get_datetime (struct grub_datetime *datetime) +{ + struct get_time_args + { + struct grub_ieee1275_common_hdr common; + grub_ieee1275_cell_t method; + grub_ieee1275_cell_t device; + grub_ieee1275_cell_t catch_result; + grub_ieee1275_cell_t year; + grub_ieee1275_cell_t month; + grub_ieee1275_cell_t day; + grub_ieee1275_cell_t hour; + grub_ieee1275_cell_t minute; + grub_ieee1275_cell_t second; + } + args; + int status; + grub_ieee1275_ihandle_t ihandle; + + if (no_ieee1275_rtc) + return grub_get_datetime_cmos (datetime); + if (!rtc) + find_rtc (); + if (!rtc) + return grub_get_datetime_cmos (datetime); + + status = grub_ieee1275_open (rtc, &ihandle); + if (status == -1) + return grub_error (GRUB_ERR_IO, "couldn't open RTC"); + + INIT_IEEE1275_COMMON (&args.common, "call-method", 2, 7); + args.device = (grub_ieee1275_cell_t) ihandle; + args.method = (grub_ieee1275_cell_t) "get-time"; + + status = IEEE1275_CALL_ENTRY_FN (&args); + + grub_ieee1275_close (ihandle); + + if (status == -1 || args.catch_result) + return grub_error (GRUB_ERR_IO, "get-time failed"); + + datetime->year = args.year; + datetime->month = args.month; + datetime->day = args.day + 1; + datetime->hour = args.hour; + datetime->minute = args.minute; + datetime->second = args.second; + + return GRUB_ERR_NONE; +} + +grub_err_t +grub_set_datetime (struct grub_datetime *datetime) +{ + struct set_time_args + { + struct grub_ieee1275_common_hdr common; + grub_ieee1275_cell_t method; + grub_ieee1275_cell_t device; + grub_ieee1275_cell_t year; + grub_ieee1275_cell_t month; + grub_ieee1275_cell_t day; + grub_ieee1275_cell_t hour; + grub_ieee1275_cell_t minute; + grub_ieee1275_cell_t second; + grub_ieee1275_cell_t catch_result; + } + args; + int status; + grub_ieee1275_ihandle_t ihandle; + + if (no_ieee1275_rtc) + return grub_set_datetime_cmos (datetime); + if (!rtc) + find_rtc (); + if (!rtc) + return grub_set_datetime_cmos (datetime); + + status = grub_ieee1275_open (rtc, &ihandle); + if (status == -1) + return grub_error (GRUB_ERR_IO, "couldn't open RTC"); + + INIT_IEEE1275_COMMON (&args.common, "call-method", 8, 1); + args.device = (grub_ieee1275_cell_t) ihandle; + args.method = (grub_ieee1275_cell_t) "set-time"; + + args.year = datetime->year; + args.month = datetime->month; + args.day = datetime->day - 1; + args.hour = datetime->hour; + args.minute = datetime->minute; + args.second = datetime->second; + + status = IEEE1275_CALL_ENTRY_FN (&args); + + grub_ieee1275_close (ihandle); + + if (status == -1 || args.catch_result) + return grub_error (GRUB_ERR_IO, "set-time failed"); + + return GRUB_ERR_NONE; +} -- cgit v1.2.3