| /* |
| * 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/machine/int.h> |
| #include <grub/machine/apm.h> |
| #include <grub/dl.h> |
| #include <grub/command.h> |
| #include <grub/i18n.h> |
| |
| GRUB_MOD_LICENSE ("GPLv3+"); |
| |
| int |
| grub_apm_get_info (struct grub_apm_info *info) |
| { |
| struct grub_bios_int_registers regs; |
| |
| /* detect APM */ |
| regs.eax = 0x5300; |
| regs.ebx = 0; |
| regs.flags = GRUB_CPU_INT_FLAGS_DEFAULT; |
| grub_bios_interrupt (0x15, ®s); |
| |
| if (regs.flags & GRUB_CPU_INT_FLAGS_CARRY) |
| return 0; |
| info->version = regs.eax & 0xffff; |
| info->flags = regs.ecx & 0xffff; |
| |
| /* disconnect APM first */ |
| regs.eax = 0x5304; |
| regs.ebx = 0; |
| regs.flags = GRUB_CPU_INT_FLAGS_DEFAULT; |
| grub_bios_interrupt (0x15, ®s); |
| |
| /* connect APM */ |
| regs.eax = 0x5303; |
| regs.ebx = 0; |
| regs.flags = GRUB_CPU_INT_FLAGS_DEFAULT; |
| grub_bios_interrupt (0x15, ®s); |
| |
| if (regs.flags & GRUB_CPU_INT_FLAGS_CARRY) |
| return 0; |
| |
| info->cseg = regs.eax & 0xffff; |
| info->offset = regs.ebx; |
| info->cseg_16 = regs.ecx & 0xffff; |
| info->dseg = regs.edx & 0xffff; |
| info->cseg_len = regs.esi >> 16; |
| info->cseg_16_len = regs.esi & 0xffff; |
| info->dseg_len = regs.edi; |
| |
| return 1; |
| } |
| |
| static grub_err_t |
| grub_cmd_lsapm (grub_command_t cmd __attribute__ ((unused)), |
| int argc __attribute__ ((unused)), char **args __attribute__ ((unused))) |
| { |
| struct grub_apm_info info; |
| if (!grub_apm_get_info (&info)) |
| return grub_error (GRUB_ERR_IO, N_("no APM found")); |
| |
| grub_printf_ (N_("Version %u.%u\n" |
| "32-bit CS = 0x%x, len = 0x%x, offset = 0x%x\n" |
| "16-bit CS = 0x%x, len = 0x%x\n" |
| "DS = 0x%x, len = 0x%x\n"), |
| info.version >> 8, info.version & 0xff, |
| info.cseg, info.cseg_len, info.offset, |
| info.cseg_16, info.cseg_16_len, |
| info.dseg, info.dseg_len); |
| grub_xputs (info.flags & GRUB_APM_FLAGS_16BITPROTECTED_SUPPORTED |
| ? _("16-bit protected interface supported\n") |
| : _("16-bit protected interface unsupported\n")); |
| grub_xputs (info.flags & GRUB_APM_FLAGS_32BITPROTECTED_SUPPORTED |
| ? _("32-bit protected interface supported\n") |
| : _("32-bit protected interface unsupported\n")); |
| grub_xputs (info.flags & GRUB_APM_FLAGS_CPUIDLE_SLOWS_DOWN |
| ? _("CPU Idle slows down processor\n") |
| : _("CPU Idle doesn't slow down processor\n")); |
| grub_xputs (info.flags & GRUB_APM_FLAGS_DISABLED |
| ? _("APM disabled\n") : _("APM enabled\n")); |
| grub_xputs (info.flags & GRUB_APM_FLAGS_DISENGAGED |
| ? _("APM disengaged\n") : _("APM engaged\n")); |
| |
| return GRUB_ERR_NONE; |
| } |
| |
| static grub_command_t cmd; |
| |
| GRUB_MOD_INIT(lsapm) |
| { |
| cmd = grub_register_command ("lsapm", grub_cmd_lsapm, 0, |
| N_("Show APM information.")); |
| } |
| |
| GRUB_MOD_FINI(lsapm) |
| { |
| grub_unregister_command (cmd); |
| } |
| |
| |