diff options
Diffstat (limited to 'grub-core/lib/ieee1275')
| -rw-r--r-- | grub-core/lib/ieee1275/cmos.c | 77 | ||||
| -rw-r--r-- | grub-core/lib/ieee1275/datetime.c | 156 | ||||
| -rw-r--r-- | grub-core/lib/ieee1275/halt.c | 33 | ||||
| -rw-r--r-- | grub-core/lib/ieee1275/reboot.c | 27 | ||||
| -rw-r--r-- | grub-core/lib/ieee1275/relocator.c | 114 |
5 files changed, 407 insertions, 0 deletions
diff --git a/grub-core/lib/ieee1275/cmos.c b/grub-core/lib/ieee1275/cmos.c new file mode 100644 index 0000000..328d70a --- /dev/null +++ b/grub-core/lib/ieee1275/cmos.c @@ -0,0 +1,77 @@ +/* + * GRUB -- GRand Unified Bootloader + * Copyright (C) 2011 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 <http://www.gnu.org/licenses/>. + */ + +#include <grub/datetime.h> +#include <grub/cmos.h> +#include <grub/dl.h> +#include <grub/ieee1275/ieee1275.h> +#include <grub/misc.h> + +volatile grub_uint8_t *grub_cmos_port = 0; + +/* Helper for grub_cmos_find_port. */ +static int +grub_cmos_find_port_iter (struct grub_ieee1275_devalias *alias) +{ + grub_ieee1275_phandle_t dev; + grub_uint32_t addr[2]; + grub_ssize_t actual; + /* Enough to check if it's "m5819" */ + char compat[100]; + if (grub_ieee1275_finddevice (alias->path, &dev)) + return 0; + if (grub_ieee1275_get_property (dev, "compatible", compat, sizeof (compat), + 0)) + return 0; + if (grub_strcmp (compat, "m5819") != 0) + return 0; + if (grub_ieee1275_get_integer_property (dev, "address", + addr, sizeof (addr), &actual)) + return 0; + if (actual == 4) + { + grub_cmos_port = (volatile grub_uint8_t *) (grub_addr_t) addr[0]; + return 1; + } + +#if GRUB_CPU_SIZEOF_VOID_P == 8 + if (actual == 8) + { + grub_cmos_port = (volatile grub_uint8_t *) + ((((grub_addr_t) addr[0]) << 32) | addr[1]); + return 1; + } +#else + if (actual == 8 && addr[0] == 0) + { + grub_cmos_port = (volatile grub_uint8_t *) addr[1]; + return 1; + } +#endif + return 0; +} + +grub_err_t +grub_cmos_find_port (void) +{ + grub_ieee1275_devices_iterate (grub_cmos_find_port_iter); + if (!grub_cmos_port) + return grub_error (GRUB_ERR_IO, "no cmos found"); + + return GRUB_ERR_NONE; +} 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 <http://www.gnu.org/licenses/>. + */ + +#include <grub/datetime.h> +#include <grub/ieee1275/ieee1275.h> +#include <grub/misc.h> +#include <grub/dl.h> +#if defined (__powerpc__) || defined (__sparc__) +#include <grub/cmos.h> +#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; +} diff --git a/grub-core/lib/ieee1275/halt.c b/grub-core/lib/ieee1275/halt.c new file mode 100644 index 0000000..8fc16d2 --- /dev/null +++ b/grub-core/lib/ieee1275/halt.c @@ -0,0 +1,33 @@ +/* openfw.c -- Open firmware support functions. */ +/* + * GRUB -- GRand Unified Bootloader + * Copyright (C) 2003,2004,2005,2007,2008,2009 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 <http://www.gnu.org/licenses/>. + */ + +#include <grub/ieee1275/ieee1275.h> +#include <grub/misc.h> + +void +grub_halt (void) +{ + /* Not standardized. We try three known commands. */ + + grub_ieee1275_interpret ("power-off", 0); + grub_ieee1275_interpret ("shut-down", 0); + grub_ieee1275_interpret ("poweroff", 0); + + while (1); +} diff --git a/grub-core/lib/ieee1275/reboot.c b/grub-core/lib/ieee1275/reboot.c new file mode 100644 index 0000000..91c8779 --- /dev/null +++ b/grub-core/lib/ieee1275/reboot.c @@ -0,0 +1,27 @@ +/* + * GRUB -- GRand Unified Bootloader + * Copyright (C) 2011 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 <http://www.gnu.org/licenses/>. + */ + +#include <grub/ieee1275/ieee1275.h> +#include <grub/misc.h> + +void +grub_reboot (void) +{ + grub_ieee1275_interpret ("reset-all", 0); + for (;;) ; +} diff --git a/grub-core/lib/ieee1275/relocator.c b/grub-core/lib/ieee1275/relocator.c new file mode 100644 index 0000000..c6dd8fa --- /dev/null +++ b/grub-core/lib/ieee1275/relocator.c @@ -0,0 +1,114 @@ +/* + * GRUB -- GRand Unified Bootloader + * Copyright (C) 2010 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 <http://www.gnu.org/licenses/>. + */ + +#include <grub/relocator.h> +#include <grub/relocator_private.h> +#include <grub/memory.h> +#include <grub/ieee1275/ieee1275.h> + +/* Helper for grub_relocator_firmware_get_max_events. */ +static int +count (grub_uint64_t addr __attribute__ ((unused)), + grub_uint64_t len __attribute__ ((unused)), + grub_memory_type_t type __attribute__ ((unused)), void *data) +{ + int *counter = data; + + (*counter)++; + return 0; +} + +unsigned +grub_relocator_firmware_get_max_events (void) +{ + int counter = 0; + + if (grub_ieee1275_test_flag (GRUB_IEEE1275_FLAG_FORCE_CLAIM)) + return 0; + grub_machine_mmap_iterate (count, &counter); + return 2 * counter; +} + +/* Context for grub_relocator_firmware_fill_events. */ +struct grub_relocator_firmware_fill_events_ctx +{ + struct grub_relocator_mmap_event *events; + int counter; +}; + +/* Helper for grub_relocator_firmware_fill_events. */ +static int +grub_relocator_firmware_fill_events_iter (grub_uint64_t addr, + grub_uint64_t len, + grub_memory_type_t type, void *data) +{ + struct grub_relocator_firmware_fill_events_ctx *ctx = data; + + if (type != GRUB_MEMORY_AVAILABLE) + return 0; + + if (grub_ieee1275_test_flag (GRUB_IEEE1275_FLAG_NO_PRE1_5M_CLAIM)) + { + if (addr + len <= 0x180000) + return 0; + + if (addr < 0x180000) + { + len = addr + len - 0x180000; + addr = 0x180000; + } + } + + ctx->events[ctx->counter].type = REG_FIRMWARE_START; + ctx->events[ctx->counter].pos = addr; + ctx->counter++; + ctx->events[ctx->counter].type = REG_FIRMWARE_END; + ctx->events[ctx->counter].pos = addr + len; + ctx->counter++; + + return 0; +} + +unsigned +grub_relocator_firmware_fill_events (struct grub_relocator_mmap_event *events) +{ + struct grub_relocator_firmware_fill_events_ctx ctx = { + .events = events, + .counter = 0 + }; + + if (grub_ieee1275_test_flag (GRUB_IEEE1275_FLAG_FORCE_CLAIM)) + return 0; + grub_machine_mmap_iterate (grub_relocator_firmware_fill_events_iter, &ctx); + return ctx.counter; +} + +int +grub_relocator_firmware_alloc_region (grub_addr_t start, grub_size_t size) +{ + grub_err_t err; + err = grub_claimmap (start, size); + grub_errno = 0; + return (err == 0); +} + +void +grub_relocator_firmware_free_region (grub_addr_t start, grub_size_t size) +{ + grub_ieee1275_release (start, size); +} |