From 51edd54738b2248e92580caa317aa4e8e1694d40 Mon Sep 17 00:00:00 2001 From: Gabe Black Date: Mon, 30 Sep 2013 23:00:33 -0700 Subject: ARM: Generalize armv7 as arm. There are ARM systems which are essentially heterogeneous multicores where some cores implement a different ARM architecture version than other cores. A specific example is the tegra124 which boots on an ARMv4 coprocessor while most code, including most of the firmware, runs on the main ARMv7 core. To support SOCs like this, the plan is to generalize the ARM architecture so that all versions are available, and an SOC/CPU can then select what architecture variant should be used for each component of the firmware; bootblock, romstage, and ramstage. Old-Change-Id: I22e048c3bc72bd56371e14200942e436c1e312c2 Signed-off-by: Gabe Black Reviewed-on: https://chromium-review.googlesource.com/171338 Reviewed-by: Gabe Black Commit-Queue: Gabe Black Tested-by: Gabe Black (cherry picked from commit 8423a41529da0ff67fb9873be1e2beb30b09ae2d) Signed-off-by: Isaac Christensen ARM: Split out ARMv7 code and make it possible to have other arch versions. We don't always want to use ARMv7 code when building for ARM, so we should separate out the ARMv7 code so it can be excluded, and also make it possible to include code for some other version of the architecture instead, all per build component for cases where we need more than one architecture version at a time. The tegra124 bootblock will ultimately need to be ARMv4, but until we have some ARMv4 code to switch over to we can leave it set to ARMv7. Old-Change-Id: Ia982c91057fac9c252397b7c866224f103761cc7 Reviewed-on: https://chromium-review.googlesource.com/171400 Reviewed-by: Gabe Black Tested-by: Gabe Black Commit-Queue: Gabe Black (cherry picked from commit 799514e6060aa97acdcf081b5c48f965be134483) Squashed two related patches for splitting ARM support into general ARM support and ARMv7 specific pieces. Change-Id: Ic6511507953a2223c87c55f90252c4a4e1dd6010 Signed-off-by: Isaac Christensen Reviewed-on: http://review.coreboot.org/6782 Tested-by: build bot (Jenkins) --- payloads/libpayload/arch/arm/libpayload.ldscript | 93 ++++++++++++++++++++++++ 1 file changed, 93 insertions(+) create mode 100644 payloads/libpayload/arch/arm/libpayload.ldscript (limited to 'payloads/libpayload/arch/arm/libpayload.ldscript') diff --git a/payloads/libpayload/arch/arm/libpayload.ldscript b/payloads/libpayload/arch/arm/libpayload.ldscript new file mode 100644 index 0000000000..5f65bd7f1a --- /dev/null +++ b/payloads/libpayload/arch/arm/libpayload.ldscript @@ -0,0 +1,93 @@ +/* + * This file is part of the libpayload project. + * + * Copyright (C) 2013 Google, Inc. + * Copyright (C) 2008 Advanced Micro Devices, Inc. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +BASE_ADDRESS = 0x4000000; + +OUTPUT_FORMAT("elf32-littlearm","elf32-littlearm", "elf32-littlearm") +OUTPUT_ARCH(arm) + +ENTRY(_entry) + +HEAP_SIZE = 2*64*1024; +STACK_SIZE = 16384; + +SECTIONS +{ + . = BASE_ADDRESS; + + . = ALIGN(16); + _start = .; + + .text : { + *(.text._entry) + *(.text) + *(.text.*) + } + + .rodata : { + *(.rodata) + *(.rodata.*) + } + + .data : { + *(.data) + *(.data.*) + } + + _edata = .; + + .bss : { + *(.sbss) + *(.sbss.*) + *(.bss) + *(.bss.*) + *(COMMON) + + /* Stack and heap */ + + . = ALIGN(16); + _heap = .; + . += HEAP_SIZE; + . = ALIGN(16); + _eheap = .; + + _estack = .; + . += STACK_SIZE; + . = ALIGN(16); + _stack = .; + } + + _end = .; + + /DISCARD/ : { + *(.comment) + *(.note*) + } +} -- cgit v1.2.3