From: Giacomo Travaglini Date: Fri, 3 Jan 2020 14:01:21 +0000 (+0000) Subject: system-arm: Rename ARM bootloader source X-Git-Tag: v19.0.0.0~134 X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=24cf3fd4bd67cf757ff60c06d413ecaf24fae5c4;p=gem5.git system-arm: Rename ARM bootloader source The AArch32 assembly source has been renamed from simple.S to boot.S, and the Makefile has been renamed to makefile (lowercase) to match the AArch64 convention Change-Id: Ia4581fe0223c156460edcc558622b5d7962258dc Signed-off-by: Giacomo Travaglini Reviewed-by: Adrian Herrera Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/23949 Reviewed-by: Nikos Nikoleris Tested-by: kokoro --- diff --git a/system/arm/bootloader/arm/Makefile b/system/arm/bootloader/arm/Makefile deleted file mode 100644 index e9fc4abb2..000000000 --- a/system/arm/bootloader/arm/Makefile +++ /dev/null @@ -1,63 +0,0 @@ -# Copyright (c) 2011, 2020 ARM Limited -# All rights reserved. -# -# The license below extends only to copyright in the software and shall -# not be construed as granting a license to any other intellectual -# property including but not limited to intellectual property relating -# to a hardware implementation of the functionality of the software -# licensed hereunder. You may use the software subject to the license -# terms below provided that you ensure that this notice is replicated -# unmodified and in its entirety in all distributions of the software, -# modified or unmodified, in source code or in binary form. -# -# Redistribution and use in source and binary forms, with or without -# modification, are permitted provided that the following conditions are -# met: redistributions of source code must retain the above copyright -# notice, this list of conditions and the following disclaimer; -# 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; -# neither the name of the copyright holders nor the names of its -# contributors may be used to endorse or promote products derived from -# this software without specific prior written permission. -# -# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT -# OWNER 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. -# -# Authors: Ali Saidi -# Prakash Ramrakhyani - - -# Need to have CROSS_COMPILE set to /path/to/bin/arm-unknown-linux-gnu- -# or have arm-unknown-linux-gnu in your path - -CROSS_COMPILE?=arm-linux-gnueabi- - -CC=$(CROSS_COMPILE)gcc -CPP=$(CROSS_COMPILE)g++ -LD=$(CROSS_COMPILE)ld - -all: boot.arm boot_emm.arm - -boot.o: simple.S - $(CC) -mfloat-abi=softfp -march=armv7-a -fno-builtin -nostdinc -o $@ -c $< - -boot.arm: boot.o - $(LD) -o $@ -N -Ttext 0x00000010 $< -non_shared -static -boot_emm.arm: boot.o - $(LD) -o $@ -N -Ttext 0x00000010 $< -non_shared -static - - -clean: - $(RM) -f *.o boot.arm boot_emm.arm - -.PHONY: all clean diff --git a/system/arm/bootloader/arm/boot.S b/system/arm/bootloader/arm/boot.S new file mode 100644 index 000000000..4870eccf8 --- /dev/null +++ b/system/arm/bootloader/arm/boot.S @@ -0,0 +1,81 @@ +/* + * Copyright (c) 2010 ARM Limited + * All rights reserved + * + * The license below extends only to copyright in the software and shall + * not be construed as granting a license to any other intellectual + * property including but not limited to intellectual property relating + * to a hardware implementation of the functionality of the software + * licensed hereunder. You may use the software subject to the license + * terms below provided that you ensure that this notice is replicated + * unmodified and in its entirety in all distributions of the software, + * modified or unmodified, in source code or in binary form. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer; + * 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; + * neither the name of the copyright holders nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT + * OWNER 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. + * + * Authors: Ali Saidi + */ + +/************************************************************************* + * Super simple bootloader + * Preserve loaded values that we need to pass to the kernel (r0, r1, r2) + * Additionally M5 puts the kernel start address in r3 + * + * Upon executing this code: + * r0 = 0, r1 = machine number, r2 = atags ptr + * r3 = kernel start address, r4 = GIC address, r5 = flag register address + * + * CPU 0 should branch to the kernel start address and it's done with + * the boot loader. Other CPUs need to start in a wfi loop. When CPU0 sends + * an IPI the slave CPUs reads a register which CPU0 has programmed with the + * boot address for the secondary cpu + **************************************************************************/ +.text +.globl _start +.extern main +_start: +_entry: + b bootldr // All the interrupt vectors jump to the boot loader + b bootldr + b bootldr + b bootldr + b bootldr + b bootldr + b bootldr + b bootldr + b bootldr + +bootldr: + mrc p15, 0, r8, c0, c0, 5 // get the MPIDR register + bics r8, r8, #0xff000000 // isolate the lower 24 bits (affinity levels) + bxeq r3 // if it's 0 (CPU 0), branch to kernel + mov r8, #1 + str r8, [r4, #0] // Enable CPU interface on GIC + wfi // wait for an interrupt +pen: + ldr r8, [r5] // load the value + movs r8, r8 // set the flags on this value + beq pen // if it's zero try again + bx r8 // Jump to where we've been told + bkpt // We should never get here diff --git a/system/arm/bootloader/arm/makefile b/system/arm/bootloader/arm/makefile new file mode 100644 index 000000000..b6e4f3246 --- /dev/null +++ b/system/arm/bootloader/arm/makefile @@ -0,0 +1,63 @@ +# Copyright (c) 2011, 2020 ARM Limited +# All rights reserved. +# +# The license below extends only to copyright in the software and shall +# not be construed as granting a license to any other intellectual +# property including but not limited to intellectual property relating +# to a hardware implementation of the functionality of the software +# licensed hereunder. You may use the software subject to the license +# terms below provided that you ensure that this notice is replicated +# unmodified and in its entirety in all distributions of the software, +# modified or unmodified, in source code or in binary form. +# +# Redistribution and use in source and binary forms, with or without +# modification, are permitted provided that the following conditions are +# met: redistributions of source code must retain the above copyright +# notice, this list of conditions and the following disclaimer; +# 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; +# neither the name of the copyright holders nor the names of its +# contributors may be used to endorse or promote products derived from +# this software without specific prior written permission. +# +# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT +# OWNER 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. +# +# Authors: Ali Saidi +# Prakash Ramrakhyani + + +# Need to have CROSS_COMPILE set to /path/to/bin/arm-unknown-linux-gnu- +# or have arm-unknown-linux-gnu in your path + +CROSS_COMPILE?=arm-linux-gnueabi- + +CC=$(CROSS_COMPILE)gcc +CPP=$(CROSS_COMPILE)g++ +LD=$(CROSS_COMPILE)ld + +all: boot.arm boot_emm.arm + +boot.o: boot.S + $(CC) -mfloat-abi=softfp -march=armv7-a -fno-builtin -nostdinc -o $@ -c $< + +boot.arm: boot.o + $(LD) -o $@ -N -Ttext 0x00000010 $< -non_shared -static +boot_emm.arm: boot.o + $(LD) -o $@ -N -Ttext 0x00000010 $< -non_shared -static + + +clean: + $(RM) -f *.o boot.arm boot_emm.arm + +.PHONY: all clean diff --git a/system/arm/bootloader/arm/simple.S b/system/arm/bootloader/arm/simple.S deleted file mode 100644 index 4870eccf8..000000000 --- a/system/arm/bootloader/arm/simple.S +++ /dev/null @@ -1,81 +0,0 @@ -/* - * Copyright (c) 2010 ARM Limited - * All rights reserved - * - * The license below extends only to copyright in the software and shall - * not be construed as granting a license to any other intellectual - * property including but not limited to intellectual property relating - * to a hardware implementation of the functionality of the software - * licensed hereunder. You may use the software subject to the license - * terms below provided that you ensure that this notice is replicated - * unmodified and in its entirety in all distributions of the software, - * modified or unmodified, in source code or in binary form. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are - * met: redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer; - * 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; - * neither the name of the copyright holders nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT - * OWNER 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. - * - * Authors: Ali Saidi - */ - -/************************************************************************* - * Super simple bootloader - * Preserve loaded values that we need to pass to the kernel (r0, r1, r2) - * Additionally M5 puts the kernel start address in r3 - * - * Upon executing this code: - * r0 = 0, r1 = machine number, r2 = atags ptr - * r3 = kernel start address, r4 = GIC address, r5 = flag register address - * - * CPU 0 should branch to the kernel start address and it's done with - * the boot loader. Other CPUs need to start in a wfi loop. When CPU0 sends - * an IPI the slave CPUs reads a register which CPU0 has programmed with the - * boot address for the secondary cpu - **************************************************************************/ -.text -.globl _start -.extern main -_start: -_entry: - b bootldr // All the interrupt vectors jump to the boot loader - b bootldr - b bootldr - b bootldr - b bootldr - b bootldr - b bootldr - b bootldr - b bootldr - -bootldr: - mrc p15, 0, r8, c0, c0, 5 // get the MPIDR register - bics r8, r8, #0xff000000 // isolate the lower 24 bits (affinity levels) - bxeq r3 // if it's 0 (CPU 0), branch to kernel - mov r8, #1 - str r8, [r4, #0] // Enable CPU interface on GIC - wfi // wait for an interrupt -pen: - ldr r8, [r5] // load the value - movs r8, r8 // set the flags on this value - beq pen // if it's zero try again - bx r8 // Jump to where we've been told - bkpt // We should never get here