diff options
Diffstat (limited to 'src/arch/x86/failover.ld')
| -rw-r--r-- | src/arch/x86/failover.ld | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/src/arch/x86/failover.ld b/src/arch/x86/failover.ld new file mode 100644 index 0000000000..d7aa47e249 --- /dev/null +++ b/src/arch/x86/failover.ld @@ -0,0 +1,70 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2006 Advanced Micro Devices, Inc. + * Copyright (C) 2008-2010 coresystems GmbH + * + * This program 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; version 2 of the License. + * + * This program 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 this program; if not, write to the Free Software + * Foundation, Inc. + */ + +MEMORY { + rom : ORIGIN = 0xffff0000, LENGTH = 64K +} + +TARGET(binary) +SECTIONS +{ + /* Symbol ap_sipi_vector must be aligned to 4kB to start AP CPUs + * with Startup IPI message without RAM. Align .rom to next 4 byte + * boundary anyway, so no pad byte appears between _rom and _start. + */ + .bogus ROMLOC_MIN : { + . = CONFIG_SIPI_VECTOR_IN_ROM ? ALIGN(4096) : ALIGN(4); + ROMLOC = .; + } >rom = 0xff + + /* This section might be better named .setup */ + .rom ROMLOC : { + _rom = .; + ap_sipi_vector = .; + *(.rom.text); + *(.rom.data); + *(.rom.data.*); + *(.rodata.*); + _erom = .; + } >rom = 0xff + + /* Allocation reserves extra 16 bytes here. Alignment requirements + * may cause the total size of a section to change when the start + * address gets applied. + */ + ROMLOC_MIN = 0xffffff00 - (_erom - _rom + 16) - + (CONFIG_SIPI_VECTOR_IN_ROM ? 4096 : 0); + + /* Post-check proper SIPI vector. */ + _bogus = ASSERT(!CONFIG_SIPI_VECTOR_IN_ROM || ((ap_sipi_vector & 0x0fff) == 0x0), + "Bad SIPI vector alignment"); + _bogus = ASSERT(!CONFIG_SIPI_VECTOR_IN_ROM || (ap_sipi_vector == CONFIG_AP_SIPI_VECTOR), + "Address mismatch on AP_SIPI_VECTOR"); + + /DISCARD/ : { + *(.comment) + *(.note) + *(.comment.*) + *(.note.*) + *(.iplt) + *(.rel.*) + *(.igot.*) + } +} |