Marc Jones (marc.jones@se-eng.com) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/8465
-gerrit
commit a5b12af797a583685190ee7e3e534f771eb59af1 Author: Furquan Shaikh furquan@google.com Date: Wed Jun 11 14:48:37 2014 -0700
coreboot arm64: Add library for system access
Add support for library functions required to access different system registers: 1) PSTATE and special purpose registers 2) System control registers 3) Cache-related registers 4) TLB maintenance registers 5) Misc barrier related functions
BUG=None BRANCH=None TEST=Compiles successfully
Original-Change-Id: I8809ca2b67b8e560b34577cda1483ee009a1d71a Original-Signed-off-by: Furquan Shaikh furquan@google.com Original-Reviewed-on: https://chromium-review.googlesource.com/203490 Original-Tested-by: Furquan Shaikh furquan@chromium.org Original-Reviewed-by: Aaron Durbin adurbin@chromium.org Original-Commit-Queue: Furquan Shaikh furquan@chromium.org (cherry picked from commit 5da840c5d1f3d8fdf8cc0d7c44772bf0cef03fbb)
armv8: GPL license armv8 lib
BUG=None BRANCH=None TEST=Compiles successfully.
Original-Change-Id: Ibe0f09ef6704ad808cc482ffec27a4db32d7f6fd Original-Signed-off-by: Furquan Shaikh furquan@google.com Original-Reviewed-on: https://chromium-review.googlesource.com/250950 Original-Trybot-Ready: Furquan Shaikh furquan@chromium.org Original-Tested-by: Furquan Shaikh furquan@chromium.org Original-Reviewed-by: Aaron Durbin adurbin@chromium.org Original-Commit-Queue: Furquan Shaikh furquan@chromium.org (cherry picked from commit bc115869bb0bcedbc284677ca5743b9ab40bfc7e)
Get the library and the GPL license in a single commit.
Signed-off-by: Marc Jones marc.jones@se-eng.com
Change-Id: I4753a6b0d13a6f7515243bfa8e749e250fdd749d --- src/arch/arm64/armv8/Makefile.inc | 2 + src/arch/arm64/armv8/cache.c | 17 +- src/arch/arm64/armv8/lib/Makefile.inc | 35 + src/arch/arm64/armv8/lib/cache.c | 82 +++ src/arch/arm64/armv8/lib/misc.c | 58 ++ src/arch/arm64/armv8/lib/pstate.c | 423 ++++++++++++ src/arch/arm64/armv8/lib/sysctrl.c | 871 ++++++++++++++++++++++++ src/arch/arm64/armv8/lib/tlb.c | 75 ++ src/arch/arm64/include/armv8/arch/arch_io.h | 2 +- src/arch/arm64/include/armv8/arch/cache.h | 174 ----- src/arch/arm64/include/armv8/arch/lib_helpers.h | 296 ++++++++ 11 files changed, 1852 insertions(+), 183 deletions(-)
diff --git a/src/arch/arm64/armv8/Makefile.inc b/src/arch/arm64/armv8/Makefile.inc index c5f7a80..ca4562b 100644 --- a/src/arch/arm64/armv8/Makefile.inc +++ b/src/arch/arm64/armv8/Makefile.inc @@ -19,6 +19,8 @@ ## ################################################################################
+subdirs-y += lib/ + armv8_flags = -march=armv8-a -I$(src)/arch/arm64/include/armv8/ -D__COREBOOT_ARM_ARCH__=8
armv8_asm_flags = $(armv8_flags) diff --git a/src/arch/arm64/armv8/cache.c b/src/arch/arm64/armv8/cache.c index a0eff46..918a883 100644 --- a/src/arch/arm64/armv8/cache.c +++ b/src/arch/arm64/armv8/cache.c @@ -34,13 +34,14 @@ #include <stdint.h>
#include <arch/cache.h> +#include <arch/lib_helpers.h>
void tlb_invalidate_all(void) { /* TLBIALL includes dTLB and iTLB on systems that have them. */ - tlbiall(current_el()); - dsb(); - isb(); + tlbiall_current(); + dsb(); + isb(); }
unsigned int dcache_line_bytes(void) @@ -51,7 +52,7 @@ unsigned int dcache_line_bytes(void) if (line_bytes) return line_bytes;
- ccsidr = read_ccsidr(); + ccsidr = raw_read_ccsidr_el1(); /* [2:0] - Indicates (Log2(number of words in cache line)) - 4 */ line_bytes = 1 << ((ccsidr & 0x7) + 4); /* words per line */ line_bytes *= sizeof(uint32_t); /* bytes per word */ @@ -125,18 +126,18 @@ void dcache_mmu_disable(void) uint32_t sctlr;
flush_dcache_all(); - sctlr = read_sctlr(current_el()); + sctlr = raw_read_sctlr_current(); sctlr &= ~(SCTLR_C | SCTLR_M); - write_sctlr(sctlr, current_el()); + raw_write_sctlr_current(sctlr); }
void dcache_mmu_enable(void) { uint32_t sctlr;
- sctlr = read_sctlr(current_el()); + sctlr = raw_read_sctlr_current(); sctlr |= SCTLR_C | SCTLR_M; - write_sctlr(sctlr, current_el()); + raw_write_sctlr_current(sctlr); }
void cache_sync_instructions(void) diff --git a/src/arch/arm64/armv8/lib/Makefile.inc b/src/arch/arm64/armv8/lib/Makefile.inc new file mode 100644 index 0000000..bda203b --- /dev/null +++ b/src/arch/arm64/armv8/lib/Makefile.inc @@ -0,0 +1,35 @@ +################################################################################ +## This file is part of the coreboot project. +## +## Copyright (C) 2014 Google Inc +## +## 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., 51 Franklin St, Fifth Floor, Boston, +## MA 02110-1301 USA +## +################################################################################ + +lib_access = pstate.c sysctrl.c cache.c tlb.c misc.c + +ifeq ($(CONFIG_ARCH_BOOTBLOCK_ARMV8_64),y) +bootblock-y += $(lib_access) +endif + +ifeq ($(CONFIG_ARCH_ROMSTAGE_ARMV8_64),y) +romstage-y += $(lib_access) +endif + +ifeq ($(CONFIG_ARCH_RAMSTAGE_ARMV8_64),y) +ramstage-y += $(lib_access) +endif diff --git a/src/arch/arm64/armv8/lib/cache.c b/src/arch/arm64/armv8/lib/cache.c new file mode 100644 index 0000000..d4c3996 --- /dev/null +++ b/src/arch/arm64/armv8/lib/cache.c @@ -0,0 +1,82 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2014 Google Inc + * + * 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., 51 Franklin St, Fifth Floor, Boston, + * MA 02110-1301 USA + * + * cache.c: Cache Maintenance Instructions + * Reference: ARM Architecture Reference Manual, ARMv8-A edition + */ + +#include <stdint.h> + +#include <arch/lib_helpers.h> + +void dccisw(uint64_t cisw) +{ + __asm__ __volatile__("dc cisw, %0\n\t" : : "r" (cisw) :"memory"); +} + +void dccivac(uint64_t civac) +{ + __asm__ __volatile__("dc civac, %0\n\t" : : "r" (civac) :"memory"); +} + +void dccsw(uint64_t csw) +{ + __asm__ __volatile__("dc csw, %0\n\t" : : "r" (csw) :"memory"); +} + +void dccvac(uint64_t cvac) +{ + __asm__ __volatile__("dc cvac, %0\n\t" : : "r" (cvac) :"memory"); +} + +void dccvau(uint64_t cvau) +{ + __asm__ __volatile__("dc cvau, %0\n\t" : : "r" (cvau) :"memory"); +} + +void dcisw(uint64_t isw) +{ + __asm__ __volatile__("dc isw, %0\n\t" : : "r" (isw) :"memory"); +} + +void dcivac(uint64_t ivac) +{ + __asm__ __volatile__("dc ivac, %0\n\t" : : "r" (ivac) :"memory"); +} + +void dczva(uint64_t zva) +{ + __asm__ __volatile__("dc zva, %0\n\t" : : "r" (zva) :"memory"); +} + +void iciallu(void) +{ + __asm__ __volatile__("ic iallu\n\t" : : :"memory"); +} + +void icialluis(void) +{ + __asm__ __volatile__("ic ialluis\n\t" : : :"memory"); +} + +void icivau(uint64_t ivau) +{ + __asm__ __volatile__("ic ivau, %0\n\t" : : "r" (ivau) :"memory"); +} diff --git a/src/arch/arm64/armv8/lib/misc.c b/src/arch/arm64/armv8/lib/misc.c new file mode 100644 index 0000000..da02a33 --- /dev/null +++ b/src/arch/arm64/armv8/lib/misc.c @@ -0,0 +1,58 @@ +/* + * This file is part of the coreboot project. + * + * Copyright 2014 Google 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. + * + * Reference: ARM Architecture Reference Manual, ARMv8-A edition + * misc.c: Memory barrier functions + */ + +#include <stdint.h> + +#include <arch/lib_helpers.h> + + +/* + * Sync primitives + */ + +/* data memory barrier */ +void dmb(void) +{ + asm volatile ("dmb sy" : : : "memory"); +} + +/* data sync barrier */ +void dsb(void) +{ + asm volatile ("dsb sy" : : : "memory"); +} + +/* instruction sync barrier */ +void isb(void) +{ + asm volatile ("isb sy" : : : "memory"); +} diff --git a/src/arch/arm64/armv8/lib/pstate.c b/src/arch/arm64/armv8/lib/pstate.c new file mode 100644 index 0000000..a194b91 --- /dev/null +++ b/src/arch/arm64/armv8/lib/pstate.c @@ -0,0 +1,423 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2014 Google Inc + * + * 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., 51 Franklin St, Fifth Floor, Boston, + * MA 02110-1301 USA + * + * Reference: ARM Architecture Reference Manual, ARMv8-A edition + * pstate.c: This file defines all the library functions for accessing + * PSTATE and special purpose registers + */ + +#include <stdint.h> + +#include <arch/lib_helpers.h> + +/* CurrentEL */ +uint32_t raw_read_current_el(void) +{ + uint32_t current_el; + + __asm__ __volatile__("mrs %0, CurrentEL\n\t" : "=r" (current_el) : : "memory"); + + return current_el; +} + +uint32_t get_current_el(void) +{ + uint32_t current_el = raw_read_current_el(); + return ((current_el >> CURRENT_EL_SHIFT) & CURRENT_EL_MASK); +} + +/* DAIF */ +uint32_t raw_read_daif(void) +{ + uint32_t daif; + + __asm__ __volatile__("mrs %0, DAIF\n\t" : "=r" (daif) : : "memory"); + + return daif; +} + +void raw_write_daif(uint32_t daif) +{ + __asm__ __volatile__("msr DAIF, %0\n\t" : : "r" (daif) : "memory"); +} + +void enable_debug_exceptions(void) +{ + __asm__ __volatile__("msr DAIFClr, %0\n\t" : : "i" (DAIF_DBG_BIT) : "memory"); +} + +void enable_serror_exceptions(void) +{ + __asm__ __volatile__("msr DAIFClr, %0\n\t" : : "i" (DAIF_ABT_BIT) : "memory"); +} + +void enable_irq(void) +{ + __asm__ __volatile__("msr DAIFClr, %0\n\t" : : "i" (DAIF_IRQ_BIT) : "memory"); +} + +void enable_fiq(void) +{ + __asm__ __volatile__("msr DAIFClr, %0\n\t" : : "i" (DAIF_FIQ_BIT) : "memory"); +} + +void disable_debug_exceptions(void) +{ + __asm__ __volatile__("msr DAIFSet, %0\n\t" : : "i" (DAIF_DBG_BIT) : "memory"); +} + +void disable_serror_exceptions(void) +{ + __asm__ __volatile__("msr DAIFSet, %0\n\t" : : "i" (DAIF_ABT_BIT) : "memory"); +} + +void disable_irq(void) +{ + __asm__ __volatile__("msr DAIFSet, %0\n\t" : : "i" (DAIF_IRQ_BIT) : "memory"); +} + +void disable_fiq(void) +{ + __asm__ __volatile__("msr DAIFSet, %0\n\t" : : "i" (DAIF_FIQ_BIT) : "memory"); +} + +/* DLR_EL0 */ +uint64_t raw_read_dlr_el0(void) +{ + uint64_t dlr_el0; + + __asm__ __volatile__("mrs %0, DLR_EL0\n\t" : "=r" (dlr_el0) : : "memory"); + + return dlr_el0; +} +void raw_write_dlr_el0(uint64_t dlr_el0) +{ + __asm__ __volatile__("msr DLR_EL0, %0\n\t" : : "r" (dlr_el0) : "memory"); +} + +/* DSPSR_EL0 */ +uint64_t raw_read_dspsr_el0(void) +{ + uint64_t dspsr_el0; + + __asm__ __volatile__("mrs %0, DSPSR_EL0\n\t" : "=r" (dspsr_el0) : : "memory"); + + return dspsr_el0; +} +void raw_write_dspsr_el0(uint64_t dspsr_el0) +{ + __asm__ __volatile__("msr DSPSR_EL0, %0\n\t" : : "r" (dspsr_el0) : "memory"); +} + +/* ELR */ +uint64_t raw_read_elr_el1(void) +{ + uint64_t elr_el1; + + __asm__ __volatile__("mrs %0, ELR_EL1\n\t" : "=r" (elr_el1) : : "memory"); + + return elr_el1; +} + +void raw_write_elr_el1(uint64_t elr_el1) +{ + __asm__ __volatile__("msr ELR_EL1, %0\n\t" : : "r" (elr_el1) : "memory"); +} + +uint64_t raw_read_elr_el2(void) +{ + uint64_t elr_el2; + + __asm__ __volatile__("mrs %0, ELR_EL2\n\t" : "=r" (elr_el2) : : "memory"); + + return elr_el2; +} + +void raw_write_elr_el2(uint64_t elr_el2) +{ + __asm__ __volatile__("msr ELR_EL2, %0\n\t" : : "r" (elr_el2) : "memory"); +} + +uint64_t raw_read_elr_el3(void) +{ + uint64_t elr_el3; + + __asm__ __volatile__("mrs %0, ELR_EL3\n\t" : "=r" (elr_el3) : : "memory"); + + return elr_el3; +} + +void raw_write_elr_el3(uint64_t elr_el3) +{ + __asm__ __volatile__("msr ELR_EL3, %0\n\t" : : "r" (elr_el3) : "memory"); +} + +uint64_t raw_read_elr_current(void) +{ + SWITCH_CASE_READ(raw_read_elr,elr,uint64_t); +} + +void raw_write_elr_current(uint64_t elr) +{ + SWITCH_CASE_WRITE(raw_write_elr,elr); +} + +/* FPCR */ +uint32_t raw_read_fpcr(void) +{ + uint32_t fpcr; + + __asm__ __volatile__("mrs %0, FPCR\n\t" : "=r" (fpcr) : : "memory"); + + return fpcr; +} + +void raw_write_fpcr(uint32_t fpcr) +{ + __asm__ __volatile__("msr FPCR, %0\n\t" : : "r" (fpcr) : "memory"); +} + +/* FPSR */ +uint32_t raw_read_fpsr(void) +{ + uint32_t fpsr; + + __asm__ __volatile__("mrs %0, FPSR\n\t" : "=r" (fpsr) : : "memory"); + + return fpsr; +} + +void raw_write_fpsr(uint32_t fpsr) +{ + __asm__ __volatile__("msr FPSR, %0\n\t" : : "r" (fpsr) : "memory"); +} + +/* NZCV */ +uint32_t raw_read_nzcv(void) +{ + uint32_t nzcv; + + __asm__ __volatile__("mrs %0, NZCV\n\t" : "=r" (nzcv) : : "memory"); + + return nzcv; +} + +void raw_write_nzcv(uint32_t nzcv) +{ + __asm__ __volatile__("msr NZCV, %0\n\t" : : "r" (nzcv) : "memory"); +} + +/* SP */ +uint64_t raw_read_sp_el0(void) +{ + uint64_t sp_el0; + + __asm__ __volatile__("mrs %0, SP_EL0\n\t" : "=r" (sp_el0) : : "memory"); + + return sp_el0; +} + +void raw_write_sp_el0(uint64_t sp_el0) +{ + __asm__ __volatile__("msr SP_EL0, %0\n\t" : : "r" (sp_el0) : "memory"); +} + +uint64_t raw_read_sp_el1(void) +{ + uint64_t sp_el1; + + __asm__ __volatile__("mrs %0, SP_EL1\n\t" : "=r" (sp_el1) : : "memory"); + + return sp_el1; +} + +void raw_write_sp_el1(uint64_t sp_el1) +{ + __asm__ __volatile__("msr SP_EL1, %0\n\t" : : "r" (sp_el1) : "memory"); +} + +uint64_t raw_read_sp_el2(void) +{ + uint64_t sp_el2; + + __asm__ __volatile__("mrs %0, SP_EL2\n\t" : "=r" (sp_el2) : : "memory"); + + return sp_el2; +} + +void raw_write_sp_el2(uint64_t sp_el2) +{ + __asm__ __volatile__("msr SP_EL2, %0\n\t" : : "r" (sp_el2) : "memory"); +} + +/* SPSel */ +uint32_t raw_read_spsel(void) +{ + uint32_t spsel; + + __asm__ __volatile__("mrs %0, SPSel\n\t" : "=r" (spsel) : : "memory"); + + return spsel; +} + +void raw_write_spsel(uint32_t spsel) +{ + __asm__ __volatile__("msr SPSel, %0\n\t" : : "r" (spsel) : "memory"); +} + +uint64_t raw_read_sp_el3(void) +{ + uint64_t sp_el3; + uint32_t spsel; + + spsel = raw_read_spsel(); + if (!spsel) + raw_write_spsel(1); + + __asm__ __volatile__("mov %0, sp\n\t" : "=r" (sp_el3) : : "memory"); + + if (!spsel) + raw_write_spsel(spsel); + + return sp_el3; +} + +void raw_write_sp_el3(uint64_t sp_el3) +{ + uint32_t spsel; + + spsel = raw_read_spsel(); + if (!spsel) + raw_write_spsel(1); + + __asm__ __volatile__("mov sp, %0\n\t" : "=r" (sp_el3) : : "memory"); + + if (!spsel) + raw_write_spsel(spsel); +} + +/* SPSR */ +uint32_t raw_read_spsr_abt(void) +{ + uint32_t spsr_abt; + + __asm__ __volatile__("mrs %0, SPSR_abt\n\t" : "=r" (spsr_abt) : : "memory"); + + return spsr_abt; +} + +void raw_write_spsr_abt(uint32_t spsr_abt) +{ + __asm__ __volatile__("msr SPSR_abt, %0\n\t" : : "r" (spsr_abt) : "memory"); +} + +uint32_t raw_read_spsr_el1(void) +{ + uint32_t spsr_el1; + + __asm__ __volatile__("mrs %0, SPSR_EL1\n\t" : "=r" (spsr_el1) : : "memory"); + + return spsr_el1; +} + +void raw_write_spsr_el1(uint32_t spsr_el1) +{ + __asm__ __volatile__("msr SPSR_EL1, %0\n\t" : : "r" (spsr_el1) : "memory"); +} + +uint32_t raw_read_spsr_el2(void) +{ + uint32_t spsr_el2; + + __asm__ __volatile__("mrs %0, SPSR_EL2\n\t" : "=r" (spsr_el2) : : "memory"); + + return spsr_el2; +} + +void raw_write_spsr_el2(uint32_t spsr_el2) +{ + __asm__ __volatile__("msr SPSR_EL2, %0\n\t" : : "r" (spsr_el2) : "memory"); +} + +uint32_t raw_read_spsr_el3(void) +{ + uint32_t spsr_el3; + + __asm__ __volatile__("mrs %0, SPSR_EL3\n\t" : "=r" (spsr_el3) : : "memory"); + + return spsr_el3; +} + +void raw_write_spsr_el3(uint32_t spsr_el3) +{ + __asm__ __volatile__("msr SPSR_EL3, %0\n\t" : : "r" (spsr_el3) : "memory"); +} + +uint32_t raw_read_spsr_current(void) +{ + SWITCH_CASE_READ(raw_read_spsr,spsr,uint32_t); +} + +void raw_write_spsr_current(uint32_t spsr) +{ + SWITCH_CASE_WRITE(raw_write_spsr,spsr); +} + +uint32_t raw_read_spsr_fiq(void) +{ + uint32_t spsr_fiq; + + __asm__ __volatile__("mrs %0, SPSR_fiq\n\t" : "=r" (spsr_fiq) : : "memory"); + + return spsr_fiq; +} + +void raw_write_spsr_fiq(uint32_t spsr_fiq) +{ + __asm__ __volatile__("msr SPSR_fiq, %0\n\t" : : "r" (spsr_fiq) : "memory"); +} + +uint32_t raw_read_spsr_irq(void) +{ + uint32_t spsr_irq; + + __asm__ __volatile__("mrs %0, SPSR_irq\n\t" : "=r" (spsr_irq) : : "memory"); + + return spsr_irq; +} + +void raw_write_spsr_irq(uint32_t spsr_irq) +{ + __asm__ __volatile__("msr SPSR_irq, %0\n\t" : : "r" (spsr_irq) : "memory"); +} + +uint32_t raw_read_spsr_und(void) +{ + uint32_t spsr_und; + + __asm__ __volatile__("mrs %0, SPSR_und\n\t" : "=r" (spsr_und) : : "memory"); + + return spsr_und; +} + +void raw_write_spsr_und(uint32_t spsr_und) +{ + __asm__ __volatile__("msr SPSR_und, %0\n\t" : : "r" (spsr_und) : "memory"); +} diff --git a/src/arch/arm64/armv8/lib/sysctrl.c b/src/arch/arm64/armv8/lib/sysctrl.c new file mode 100644 index 0000000..deb991f --- /dev/null +++ b/src/arch/arm64/armv8/lib/sysctrl.c @@ -0,0 +1,871 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2014 Google Inc + * + * 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., 51 Franklin St, Fifth Floor, Boston, + * MA 02110-1301 USA + * + * Reference: ARM Architecture Reference Manual, ARMv8-A edition + * sysctrl.c: This file defines all the library functions for accessing system + * control registers in Aarch64 + */ + +#include <stdint.h> + +#include <arch/lib_helpers.h> + +/* ACTLR */ +uint32_t raw_read_actlr_el1(void) +{ + uint32_t actlr_el1; + + __asm__ __volatile__("mrs %0, ACTLR_EL1\n\t" : "=r" (actlr_el1) : : "memory"); + + return actlr_el1; +} + +void raw_write_actlr_el1(uint32_t actlr_el1) +{ + __asm__ __volatile__("msr ACTLR_EL1, %0\n\t" : : "r" (actlr_el1) : "memory"); +} + +uint32_t raw_read_actlr_el2(void) +{ + uint32_t actlr_el2; + + __asm__ __volatile__("mrs %0, ACTLR_EL2\n\t" : "=r" (actlr_el2) : : "memory"); + + return actlr_el2; +} + +void raw_write_actlr_el2(uint32_t actlr_el2) +{ + __asm__ __volatile__("msr ACTLR_EL2, %0\n\t" : : "r" (actlr_el2) : "memory"); +} + +uint32_t raw_read_actlr_el3(void) +{ + uint32_t actlr_el3; + + __asm__ __volatile__("mrs %0, ACTLR_EL3\n\t" : "=r" (actlr_el3) : : "memory"); + + return actlr_el3; +} + +void raw_write_actlr_el3(uint32_t actlr_el3) +{ + __asm__ __volatile__("msr ACTLR_EL3, %0\n\t" : : "r" (actlr_el3) : "memory"); +} + +uint32_t raw_read_actlr_current(void) +{ + SWITCH_CASE_READ(raw_read_actlr,actlr,uint32_t); +} + +void raw_write_actlr_current(uint32_t actlr) +{ + SWITCH_CASE_WRITE(raw_write_actlr,actlr); +} + +/* AFSR0 */ +uint32_t raw_read_afsr0_el1(void) +{ + uint32_t afsr0_el1; + + __asm__ __volatile__("mrs %0, AFSR0_EL1\n\t" : "=r" (afsr0_el1) : : "memory"); + + return afsr0_el1; +} + +void raw_write_afsr0_el1(uint32_t afsr0_el1) +{ + __asm__ __volatile__("msr AFSR0_EL1, %0\n\t" : : "r" (afsr0_el1) : "memory"); +} + +uint32_t raw_read_afsr0_el2(void) +{ + uint32_t afsr0_el2; + + __asm__ __volatile__("mrs %0, AFSR0_EL2\n\t" : "=r" (afsr0_el2) : : "memory"); + + return afsr0_el2; +} + +void raw_write_afsr0_el2(uint32_t afsr0_el2) +{ + __asm__ __volatile__("msr AFSR0_EL2, %0\n\t" : : "r" (afsr0_el2) : "memory"); +} + +uint32_t raw_read_afsr0_el3(void) +{ + uint32_t afsr0_el3; + + __asm__ __volatile__("mrs %0, AFSR0_EL3\n\t" : "=r" (afsr0_el3) : : "memory"); + + return afsr0_el3; +} + +void raw_write_afsr0_el3(uint32_t afsr0_el3) +{ + __asm__ __volatile__("msr AFSR0_EL3, %0\n\t" : : "r" (afsr0_el3) : "memory"); +} + +uint32_t raw_read_afsr0_current(void) +{ + SWITCH_CASE_READ(raw_read_afsr0,afsr0,uint32_t); +} + +void raw_write_afsr0_current(uint32_t afsr0) +{ + SWITCH_CASE_WRITE(raw_write_afsr0,afsr0); +} + +/* AFSR1 */ +uint32_t raw_read_afsr1_el1(void) +{ + uint32_t afsr1_el1; + + __asm__ __volatile__("mrs %0, AFSR1_EL1\n\t" : "=r" (afsr1_el1) : : "memory"); + + return afsr1_el1; +} + +void raw_write_afsr1_el1(uint32_t afsr1_el1) +{ + __asm__ __volatile__("msr AFSR1_EL1, %0\n\t" : : "r" (afsr1_el1) : "memory"); +} + +uint32_t raw_read_afsr1_el2(void) +{ + uint32_t afsr1_el2; + + __asm__ __volatile__("mrs %0, AFSR1_EL2\n\t" : "=r" (afsr1_el2) : : "memory"); + + return afsr1_el2; +} + +void raw_write_afsr1_el2(uint32_t afsr1_el2) +{ + __asm__ __volatile__("msr AFSR1_EL2, %0\n\t" : : "r" (afsr1_el2) : "memory"); +} + +uint32_t raw_read_afsr1_el3(void) +{ + uint32_t afsr1_el3; + + __asm__ __volatile__("mrs %0, AFSR1_EL3\n\t" : "=r" (afsr1_el3) : : "memory"); + + return afsr1_el3; +} + +void raw_write_afsr1_el3(uint32_t afsr1_el3) +{ + __asm__ __volatile__("msr AFSR1_EL3, %0\n\t" : : "r" (afsr1_el3) : "memory"); +} + +uint32_t raw_read_afsr1_current(void) +{ + SWITCH_CASE_READ(raw_read_afsr1,afsr1,uint32_t); +} + +void raw_write_afsr1_current(uint32_t afsr1) +{ + SWITCH_CASE_WRITE(raw_write_afsr1,afsr1); +} + +/* AIDR */ +uint32_t raw_read_aidr_el1(void) +{ + uint32_t aidr_el1; + + __asm__ __volatile__("mrs %0, AIDR_EL1\n\t" : "=r" (aidr_el1) : : "memory"); + + return aidr_el1; +} + +/* AMAIR */ +uint64_t raw_read_amair_el1(void) +{ + uint64_t amair_el1; + + __asm__ __volatile__("mrs %0, AMAIR_EL1\n\t" : "=r" (amair_el1) : : "memory"); + + return amair_el1; +} + +void raw_write_amair_el1(uint64_t amair_el1) +{ + __asm__ __volatile__("msr AMAIR_EL1, %0\n\t" : : "r" (amair_el1) : "memory"); +} + +uint64_t raw_read_amair_el2(void) +{ + uint64_t amair_el2; + + __asm__ __volatile__("mrs %0, AMAIR_EL2\n\t" : "=r" (amair_el2) : : "memory"); + + return amair_el2; +} + +void raw_write_amair_el2(uint64_t amair_el2) +{ + __asm__ __volatile__("msr AMAIR_EL2, %0\n\t" : : "r" (amair_el2) : "memory"); +} + +uint64_t raw_read_amair_el3(void) +{ + uint64_t amair_el3; + + __asm__ __volatile__("mrs %0, AMAIR_EL3\n\t" : "=r" (amair_el3) : : "memory"); + + return amair_el3; +} + +void raw_write_amair_el3(uint64_t amair_el3) +{ + __asm__ __volatile__("msr AMAIR_EL3, %0\n\t" : : "r" (amair_el3) : "memory"); +} + +uint64_t raw_read_amair_current(void) +{ + SWITCH_CASE_READ(raw_read_amair,amair,uint64_t); +} + +void raw_write_amair_current(uint64_t amair) +{ + SWITCH_CASE_WRITE(raw_write_amair,amair); +} + +/* CCSIDR */ +uint32_t raw_read_ccsidr_el1(void) +{ + uint32_t ccsidr_el1; + + __asm__ __volatile__("mrs %0, CCSIDR_EL1\n\t" : "=r" (ccsidr_el1) : : "memory"); + + return ccsidr_el1; +} + +/* CLIDR */ +uint32_t raw_read_clidr_el1(void) +{ + uint32_t clidr_el1; + + __asm__ __volatile__("mrs %0, CLIDR_EL1\n\t" : "=r" (clidr_el1) : : "memory"); + + return clidr_el1; +} + +/* CPACR */ +uint32_t raw_read_cpacr_el1(void) +{ + uint32_t cpacr_el1; + + __asm__ __volatile__("mrs %0, CPACR_EL1\n\t" : "=r" (cpacr_el1) : : "memory"); + + return cpacr_el1; +} + +void raw_write_cpacr_el1(uint32_t cpacr_el1) +{ + __asm__ __volatile__("msr CPACR_EL1, %0\n\t" : : "r" (cpacr_el1) : "memory"); +} + +/* CPTR */ +uint32_t raw_read_cptr_el2(void) +{ + uint32_t cptr_el2; + + __asm__ __volatile__("mrs %0, CPTR_EL2\n\t" : "=r" (cptr_el2) : : "memory"); + + return cptr_el2; +} + +void raw_write_cptr_el2(uint32_t cptr_el2) +{ + __asm__ __volatile__("msr CPTR_EL2, %0\n\t" : : "r" (cptr_el2) : "memory"); +} + +uint32_t raw_read_cptr_el3(void) +{ + uint32_t cptr_el3; + + __asm__ __volatile__("mrs %0, CPTR_EL3\n\t" : "=r" (cptr_el3) : : "memory"); + + return cptr_el3; +} + +void raw_write_cptr_el3(uint32_t cptr_el3) +{ + __asm__ __volatile__("msr CPTR_EL3, %0\n\t" : : "r" (cptr_el3) : "memory"); +} + +/* CSSELR */ +uint32_t raw_read_csselr_el1(void) +{ + uint32_t csselr_el1; + + __asm__ __volatile__("mrs %0, CSSELR_EL1\n\t" : "=r" (csselr_el1) : : "memory"); + + return csselr_el1; +} + +void raw_write_csselr_el1(uint32_t csselr_el1) +{ + __asm__ __volatile__("msr CSSELR_EL1, %0\n\t" : : "r" (csselr_el1) : "memory"); +} + +/* CTR */ +uint32_t raw_read_ctr_el0(void) +{ + uint32_t ctr_el0; + + __asm__ __volatile__("mrs %0, CTR_EL0\n\t" : "=r" (ctr_el0) : : "memory"); + + return ctr_el0; +} + +/* ESR */ +uint32_t raw_read_esr_el1(void) +{ + uint32_t esr_el1; + + __asm__ __volatile__("mrs %0, ESR_EL1\n\t" : "=r" (esr_el1) : : "memory"); + + return esr_el1; +} + +void raw_write_esr_el1(uint32_t esr_el1) +{ + __asm__ __volatile__("msr ESR_EL1, %0\n\t" : : "r" (esr_el1) : "memory"); +} + +uint32_t raw_read_esr_el2(void) +{ + uint32_t esr_el2; + + __asm__ __volatile__("mrs %0, ESR_EL2\n\t" : "=r" (esr_el2) : : "memory"); + + return esr_el2; +} + +void raw_write_esr_el2(uint32_t esr_el2) +{ + __asm__ __volatile__("msr ESR_EL2, %0\n\t" : : "r" (esr_el2) : "memory"); +} + +uint32_t raw_read_esr_el3(void) +{ + uint32_t esr_el3; + + __asm__ __volatile__("mrs %0, ESR_EL3\n\t" : "=r" (esr_el3) : : "memory"); + + return esr_el3; +} + +void raw_write_esr_el3(uint32_t esr_el3) +{ + __asm__ __volatile__("msr ESR_EL3, %0\n\t" : : "r" (esr_el3) : "memory"); +} + +uint32_t raw_read_esr_current(void) +{ + SWITCH_CASE_READ(raw_read_esr,esr,uint32_t); +} + +void raw_write_esr_current(uint32_t esr) +{ + SWITCH_CASE_WRITE(raw_write_esr,esr); +} + +/* FAR */ +uint64_t raw_read_far_el1(void) +{ + uint64_t far_el1; + + __asm__ __volatile__("mrs %0, FAR_EL1\n\t" : "=r" (far_el1) : : "memory"); + + return far_el1; +} + +void raw_write_far_el1(uint64_t far_el1) +{ + __asm__ __volatile__("msr FAR_EL1, %0\n\t" : : "r" (far_el1) : "memory"); +} + +uint64_t raw_read_far_el2(void) +{ + uint64_t far_el2; + + __asm__ __volatile__("mrs %0, FAR_EL2\n\t" : "=r" (far_el2) : : "memory"); + + return far_el2; +} + +void raw_write_far_el2(uint64_t far_el2) +{ + __asm__ __volatile__("msr FAR_EL2, %0\n\t" : : "r" (far_el2) : "memory"); +} + +uint64_t raw_read_far_el3(void) +{ + uint64_t far_el3; + + __asm__ __volatile__("mrs %0, FAR_EL3\n\t" : "=r" (far_el3) : : "memory"); + + return far_el3; +} + +void raw_write_far_el3(uint64_t far_el3) +{ + __asm__ __volatile__("msr FAR_EL3, %0\n\t" : : "r" (far_el3) : "memory"); +} + +uint64_t raw_read_far_current(void) +{ + SWITCH_CASE_READ(raw_read_far,far,uint64_t); +} + +void raw_write_far_current(uint64_t far) +{ + SWITCH_CASE_WRITE(raw_write_far,far); +} + +/* HCR */ +uint64_t raw_read_hcr_el2(void) +{ + uint64_t hcr_el2; + + __asm__ __volatile__("mrs %0, HCR_EL2\n\t" : "=r" (hcr_el2) : : "memory"); + + return hcr_el2; +} + +void raw_write_hcr_el2(uint64_t hcr_el2) +{ + __asm__ __volatile__("msr HCR_EL2, %0\n\t" : : "r" (hcr_el2) : "memory"); +} + +/* AA64PFR0 */ +uint64_t raw_read_aa64pfr0_el1(void) +{ + uint64_t aa64pfr0_el1; + + __asm__ __volatile__("mrs %0, ID_AA64PFR0_EL1\n\t" : "=r" (aa64pfr0_el1) : : "memory"); + + return aa64pfr0_el1; +} + +/* MAIR */ +uint64_t raw_read_mair_el1(void) +{ + uint64_t mair_el1; + + __asm__ __volatile__("mrs %0, MAIR_EL1\n\t" : "=r" (mair_el1) : : "memory"); + + return mair_el1; +} + +void raw_write_mair_el1(uint64_t mair_el1) +{ + __asm__ __volatile__("msr MAIR_EL1, %0\n\t" : : "r" (mair_el1) : "memory"); +} + +uint64_t raw_read_mair_el2(void) +{ + uint64_t mair_el2; + + __asm__ __volatile__("mrs %0, MAIR_EL2\n\t" : "=r" (mair_el2) : : "memory"); + + return mair_el2; +} + +void raw_write_mair_el2(uint64_t mair_el2) +{ + __asm__ __volatile__("msr MAIR_EL2, %0\n\t" : : "r" (mair_el2) : "memory"); +} + +uint64_t raw_read_mair_el3(void) +{ + uint64_t mair_el3; + + __asm__ __volatile__("mrs %0, MAIR_EL3\n\t" : "=r" (mair_el3) : : "memory"); + + return mair_el3; +} + +void raw_write_mair_el3(uint64_t mair_el3) +{ + __asm__ __volatile__("msr MAIR_EL3, %0\n\t" : : "r" (mair_el3) : "memory"); +} + +uint64_t raw_read_mair_current(void) +{ + SWITCH_CASE_READ(raw_read_mair,mair,uint64_t); +} + +void raw_write_mair_current(uint64_t mair) +{ + SWITCH_CASE_WRITE(raw_write_mair,mair); +} + +/* MPIDR */ +uint64_t raw_read_mpidr_el1(void) +{ + uint64_t mpidr_el1; + + __asm__ __volatile__("mrs %0, MPIDR_EL1\n\t" : "=r" (mpidr_el1) : : "memory"); + + return mpidr_el1; +} + +/* RMR */ +uint32_t raw_read_rmr_el1(void) +{ + uint32_t rmr_el1; + + __asm__ __volatile__("mrs %0, RMR_EL1\n\t" : "=r" (rmr_el1) : : "memory"); + + return rmr_el1; +} + +void raw_write_rmr_el1(uint32_t rmr_el1) +{ + __asm__ __volatile__("msr RMR_EL1, %0\n\t" : : "r" (rmr_el1) : "memory"); +} + +uint32_t raw_read_rmr_el2(void) +{ + uint32_t rmr_el2; + + __asm__ __volatile__("mrs %0, RMR_EL2\n\t" : "=r" (rmr_el2) : : "memory"); + + return rmr_el2; +} + +void raw_write_rmr_el2(uint32_t rmr_el2) +{ + __asm__ __volatile__("msr RMR_EL2, %0\n\t" : : "r" (rmr_el2) : "memory"); +} + +uint32_t raw_read_rmr_el3(void) +{ + uint32_t rmr_el3; + + __asm__ __volatile__("mrs %0, RMR_EL3\n\t" : "=r" (rmr_el3) : : "memory"); + + return rmr_el3; +} + +void raw_write_rmr_el3(uint32_t rmr_el3) +{ + __asm__ __volatile__("msr RMR_EL3, %0\n\t" : : "r" (rmr_el3) : "memory"); +} + +uint32_t raw_read_rmr_current(void) +{ + SWITCH_CASE_READ(raw_read_rmr,rmr,uint32_t); +} + +void raw_write_rmr_current(uint32_t rmr) +{ + SWITCH_CASE_WRITE(raw_write_rmr,rmr); +} + +/* RVBAR */ +uint64_t raw_read_rvbar_el1(void) +{ + uint64_t rvbar_el1; + + __asm__ __volatile__("mrs %0, RVBAR_EL1\n\t" : "=r" (rvbar_el1) : : "memory"); + + return rvbar_el1; +} + +void raw_write_rvbar_el1(uint64_t rvbar_el1) +{ + __asm__ __volatile__("msr RVBAR_EL1, %0\n\t" : : "r" (rvbar_el1) : "memory"); +} + +uint64_t raw_read_rvbar_el2(void) +{ + uint64_t rvbar_el2; + + __asm__ __volatile__("mrs %0, RVBAR_EL2\n\t" : "=r" (rvbar_el2) : : "memory"); + + return rvbar_el2; +} + +void raw_write_rvbar_el2(uint64_t rvbar_el2) +{ + __asm__ __volatile__("msr RVBAR_EL2, %0\n\t" : : "r" (rvbar_el2) : "memory"); +} + +uint64_t raw_read_rvbar_el3(void) +{ + uint64_t rvbar_el3; + + __asm__ __volatile__("mrs %0, RVBAR_EL3\n\t" : "=r" (rvbar_el3) : : "memory"); + + return rvbar_el3; +} + +void raw_write_rvbar_el3(uint64_t rvbar_el3) +{ + __asm__ __volatile__("msr RVBAR_EL3, %0\n\t" : : "r" (rvbar_el3) : "memory"); +} + +uint64_t raw_read_rvbar_current(void) +{ + SWITCH_CASE_READ(raw_read_rvbar,rvbar,uint64_t); +} + +void raw_write_rvbar_current(uint64_t rvbar) +{ + SWITCH_CASE_WRITE(raw_write_rvbar,rvbar); +} + +/* SCR */ +uint32_t raw_read_scr_el3(void) +{ + uint32_t scr_el3; + + __asm__ __volatile__("mrs %0, SCR_EL3\n\t" : "=r" (scr_el3) : : "memory"); + + return scr_el3; +} + +void raw_write_scr_el3(uint32_t scr_el3) +{ + __asm__ __volatile__("msr SCR_EL3, %0\n\t" : : "r" (scr_el3) : "memory"); +} + +/* SCTLR */ +uint32_t raw_read_sctlr_el1(void) +{ + uint32_t sctlr_el1; + + __asm__ __volatile__("mrs %0, SCTLR_EL1\n\t" : "=r" (sctlr_el1) : : "memory"); + + return sctlr_el1; +} + +void raw_write_sctlr_el1(uint32_t sctlr_el1) +{ + __asm__ __volatile__("msr SCTLR_EL1, %0\n\t" : : "r" (sctlr_el1) : "memory"); +} + +uint32_t raw_read_sctlr_el2(void) +{ + uint32_t sctlr_el2; + + __asm__ __volatile__("mrs %0, SCTLR_EL2\n\t" : "=r" (sctlr_el2) : : "memory"); + + return sctlr_el2; +} + +void raw_write_sctlr_el2(uint32_t sctlr_el2) +{ + __asm__ __volatile__("msr SCTLR_EL2, %0\n\t" : : "r" (sctlr_el2) : "memory"); +} + +uint32_t raw_read_sctlr_el3(void) +{ + uint32_t sctlr_el3; + + __asm__ __volatile__("mrs %0, SCTLR_EL3\n\t" : "=r" (sctlr_el3) : : "memory"); + + return sctlr_el3; +} + +void raw_write_sctlr_el3(uint32_t sctlr_el3) +{ + __asm__ __volatile__("msr SCTLR_EL3, %0\n\t" : : "r" (sctlr_el3) : "memory"); +} + +uint32_t raw_read_sctlr_current(void) +{ + SWITCH_CASE_READ(raw_read_sctlr,sctlr,uint32_t); +} + +void raw_write_sctlr_current(uint32_t sctlr) +{ + SWITCH_CASE_WRITE(raw_write_sctlr,sctlr); +} + +/* TCR */ +uint64_t raw_read_tcr_el1(void) +{ + uint64_t tcr_el1; + + __asm__ __volatile__("mrs %0, TCR_EL1\n\t" : "=r" (tcr_el1) : : "memory"); + + return tcr_el1; +} + +void raw_write_tcr_el1(uint64_t tcr_el1) +{ + __asm__ __volatile__("msr TCR_EL1, %0\n\t" : : "r" (tcr_el1) : "memory"); +} + +uint32_t raw_read_tcr_el2(void) +{ + uint32_t tcr_el2; + + __asm__ __volatile__("mrs %0, TCR_EL2\n\t" : "=r" (tcr_el2) : : "memory"); + + return tcr_el2; +} + +void raw_write_tcr_el2(uint32_t tcr_el2) +{ + __asm__ __volatile__("msr TCR_EL2, %0\n\t" : : "r" (tcr_el2) : "memory"); +} + +uint32_t raw_read_tcr_el3(void) +{ + uint32_t tcr_el3; + + __asm__ __volatile__("mrs %0, TCR_EL3\n\t" : "=r" (tcr_el3) : : "memory"); + + return tcr_el3; +} + +void raw_write_tcr_el3(uint32_t tcr_el3) +{ + __asm__ __volatile__("msr TCR_EL3, %0\n\t" : : "r" (tcr_el3) : "memory"); +} + +/* TTBR0 */ +uint64_t raw_read_ttbr0_el1(void) +{ + uint64_t ttbr0_el1; + + __asm__ __volatile__("mrs %0, TTBR0_EL1\n\t" : "=r" (ttbr0_el1) : : "memory"); + + return ttbr0_el1; +} + +void raw_write_ttbr0_el1(uint64_t ttbr0_el1) +{ + __asm__ __volatile__("msr TTBR0_EL1, %0\n\t" : : "r" (ttbr0_el1) : "memory"); +} + +uint64_t raw_read_ttbr0_el2(void) +{ + uint64_t ttbr0_el2; + + __asm__ __volatile__("mrs %0, TTBR0_EL2\n\t" : "=r" (ttbr0_el2) : : "memory"); + + return ttbr0_el2; +} + +void raw_write_ttbr0_el2(uint64_t ttbr0_el2) +{ + __asm__ __volatile__("msr TTBR0_EL2, %0\n\t" : : "r" (ttbr0_el2) : "memory"); +} + +uint64_t raw_read_ttbr0_el3(void) +{ + uint64_t ttbr0_el3; + + __asm__ __volatile__("mrs %0, TTBR0_EL3\n\t" : "=r" (ttbr0_el3) : : "memory"); + + return ttbr0_el3; +} + +void raw_write_ttbr0_el3(uint64_t ttbr0_el3) +{ + __asm__ __volatile__("msr TTBR0_EL3, %0\n\t" : : "r" (ttbr0_el3) : "memory"); +} + +uint64_t raw_read_ttbr0_current(void) +{ + SWITCH_CASE_READ(raw_read_ttbr0,ttbr0,uint64_t); +} + +void raw_write_ttbr0_current(uint64_t ttbr0) +{ + SWITCH_CASE_WRITE(raw_write_ttbr0,ttbr0); +} + +/* TTBR1 */ +uint64_t raw_read_ttbr1_el1(void) +{ + uint64_t ttbr1_el1; + + __asm__ __volatile__("mrs %0, TTBR1_EL1\n\t" : "=r" (ttbr1_el1) : : "memory"); + + return ttbr1_el1; +} + +void raw_write_ttbr1_el1(uint64_t ttbr1_el1) +{ + __asm__ __volatile__("msr TTBR1_EL1, %0\n\t" : : "r" (ttbr1_el1) : "memory"); +} + +/* VBAR */ +uint64_t raw_read_vbar_el1(void) +{ + uint64_t vbar_el1; + + __asm__ __volatile__("mrs %0, VBAR_EL1\n\t" : "=r" (vbar_el1) : : "memory"); + + return vbar_el1; +} + +void raw_write_vbar_el1(uint64_t vbar_el1) +{ + __asm__ __volatile__("msr VBAR_EL1, %0\n\t" : : "r" (vbar_el1) : "memory"); +} + +uint64_t raw_read_vbar_el2(void) +{ + uint64_t vbar_el2; + + __asm__ __volatile__("mrs %0, VBAR_EL2\n\t" : "=r" (vbar_el2) : : "memory"); + + return vbar_el2; +} + +void raw_write_vbar_el2(uint64_t vbar_el2) +{ + __asm__ __volatile__("msr VBAR_EL2, %0\n\t" : : "r" (vbar_el2) : "memory"); +} + +uint64_t raw_read_vbar_el3(void) +{ + uint64_t vbar_el3; + + __asm__ __volatile__("mrs %0, VBAR_EL3\n\t" : "=r" (vbar_el3) : : "memory"); + + return vbar_el3; +} + +void raw_write_vbar_el3(uint64_t vbar_el3) +{ + __asm__ __volatile__("msr VBAR_EL3, %0\n\t" : : "r" (vbar_el3) : "memory"); +} + +uint64_t raw_read_vbar_current(void) +{ + SWITCH_CASE_READ(raw_read_vbar,vbar,uint64_t); +} + +void raw_write_vbar_current(uint64_t vbar) +{ + SWITCH_CASE_WRITE(raw_write_vbar,vbar); +} diff --git a/src/arch/arm64/armv8/lib/tlb.c b/src/arch/arm64/armv8/lib/tlb.c new file mode 100644 index 0000000..36d1e70 --- /dev/null +++ b/src/arch/arm64/armv8/lib/tlb.c @@ -0,0 +1,75 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2014 Google Inc + * + * 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., 51 Franklin St, Fifth Floor, Boston, + * MA 02110-1301 USA + * + * tlb.c: System intructions for TLB maintenance. + * Reference: ARM Architecture Reference Manual, ARMv8-A edition + */ + +#include <stdint.h> + +#include <arch/lib_helpers.h> + +/* TLBIALL */ +void tlbiall_el1(void) +{ + __asm__ __volatile__("tlbi alle1\n\t" : : : "memory"); +} + +void tlbiall_el2(void) +{ + __asm__ __volatile__("tlbi alle2\n\t" : : : "memory"); +} + +void tlbiall_el3(void) +{ + __asm__ __volatile__("tlbi alle3\n\t" : : : "memory"); +} + +void tlbiall_current(void) +{ + SWITCH_CASE_TLBI(tlbiall); +} + +/* TLBIALLIS */ +void tlbiallis_el1(void) +{ + __asm__ __volatile__("tlbi alle1is\n\t" : : : "memory"); +} + +void tlbiallis_el2(void) +{ + __asm__ __volatile__("tlbi alle2is\n\t" : : : "memory"); +} + +void tlbiallis_el3(void) +{ + __asm__ __volatile__("tlbi alle3is\n\t" : : : "memory"); +} + +void tlbiallis_current(void) +{ + SWITCH_CASE_TLBI(tlbiallis); +} + +/* TLBIVAA */ +void tlbivaa_el1(uint64_t va) +{ + __asm__ __volatile__("tlbi vaae1, %0\n\t" : : "r" (va) : "memory"); +} diff --git a/src/arch/arm64/include/armv8/arch/arch_io.h b/src/arch/arm64/include/armv8/arch/arch_io.h index 56ed86d..2876c8b 100644 --- a/src/arch/arm64/include/armv8/arch/arch_io.h +++ b/src/arch/arm64/include/armv8/arch/arch_io.h @@ -23,8 +23,8 @@ #ifndef __ASM_ARM64_ARCH_IO_H #define __ASM_ARM64_ARCH_IO_H
-#include <arch/cache.h> /* for dmb() */ #include <stdint.h> +#include <arch/lib_helpers.h>
static inline uint8_t read8(const void *addr) { diff --git a/src/arch/arm64/include/armv8/arch/cache.h b/src/arch/arm64/include/armv8/arch/cache.h index 325b857..977edba 100644 --- a/src/arch/arm64/include/armv8/arch/cache.h +++ b/src/arch/arm64/include/armv8/arch/cache.h @@ -57,180 +57,6 @@ #define SCTLR_EL1_E0E (1 << 24) /* Exception endianness at EL0 */ #define SCTLR_EL1_UCI (1 << 26) /* EL0 access to cache instructions */
-/* - * Utility macro to choose an instruction according to the exception - * level (EL) passed, which number is concatenated between insa and insb parts - */ -#define SWITCH_EL(insa, insb, el) if (el == 1) asm volatile(insa "1" insb); \ - else if (el == 2) asm volatile (insa "2" insb); \ - else asm volatile (insa "3" insb) - -/* get current exception level (EL1-EL3) */ -static inline uint32_t current_el(void) -{ - uint32_t el; - asm volatile ("mrs %0, CurrentEL" : "=r" (el)); - return el >> 2; -} - -/* - * Sync primitives - */ - -/* data memory barrier */ -static inline void dmb(void) -{ - asm volatile ("dmb sy" : : : "memory"); -} - -/* data sync barrier */ -static inline void dsb(void) -{ - asm volatile ("dsb sy" : : : "memory"); -} - -/* instruction sync barrier */ -static inline void isb(void) -{ - asm volatile ("isb sy" : : : "memory"); -} - -/* - * Low-level TLB maintenance operations - */ - -/* invalidate entire unified TLB */ -static inline void tlbiall(uint32_t el) -{ - SWITCH_EL("tlbi alle", : : : "memory", el); -} - -/* invalidate unified TLB by VA, all ASID (EL1) */ -static inline void tlbivaa(uint64_t va) -{ - asm volatile("tlbi vaae1, %0" : : "r" (va) : "memory"); -} - -/* write translation table base register 0 (TTBR0_ELx) */ -static inline void write_ttbr0(uint64_t val, uint32_t el) -{ - SWITCH_EL("msr ttbr0_el", ", %0" : : "r" (val) : "memory", el); -} - -/* read translation control register (TCR_ELx) */ -static inline uint64_t read_tcr(uint32_t el) -{ - uint64_t val = 0; - SWITCH_EL("mrs %0, tcr_el", : "=r" (val), el); - return val; -} - -/* write translation control register (TCR_ELx) */ -static inline void write_tcr(uint64_t val, uint32_t el) -{ - SWITCH_EL("msr tcr_el", ", %0" : : "r" (val) : "memory", el); -} - -/* - * Low-level cache maintenance operations - */ - -/* data cache clean and invalidate by VA to PoC */ -static inline void dccivac(uint64_t va) -{ - asm volatile ("dc civac, %0" : : "r" (va) : "memory"); -} - -/* data cache clean and invalidate by set/way */ -static inline void dccisw(uint64_t val) -{ - asm volatile ("dc cisw, %0" : : "r" (val) : "memory"); -} - -/* data cache clean by VA to PoC */ -static inline void dccvac(uint64_t va) -{ - asm volatile ("dc cvac, %0" : : "r" (va) : "memory"); -} - -/* data cache clean by set/way */ -static inline void dccsw(uint64_t val) -{ - asm volatile ("dc csw, %0" : : "r" (val) : "memory"); -} - -/* data cache invalidate by VA to PoC */ -static inline void dcivac(uint64_t va) -{ - asm volatile ("dc ivac, %0" : : "r" (va) : "memory"); -} - -/* data cache invalidate by set/way */ -static inline void dcisw(uint64_t val) -{ - asm volatile ("dc isw, %0" : : "r" (val) : "memory"); -} - -/* instruction cache invalidate all */ -static inline void iciallu(void) -{ - asm volatile ("ic iallu" : : : "memory"); -} - -/* - * Cache registers functions - */ - -/* read cache level ID register (CLIDR_EL1) */ -static inline uint32_t read_clidr(void) -{ - uint32_t val = 0; - asm volatile ("mrs %0, clidr_el1" : "=r" (val)); - return val; -} - -/* read cache size ID register register (CCSIDR_EL1) */ -static inline uint32_t read_ccsidr(void) -{ - uint32_t val = 0; - asm volatile ("mrs %0, ccsidr_el1" : "=r" (val)); - return val; -} - -/* read cache size selection register (CSSELR_EL1) */ -static inline uint32_t read_csselr(void) -{ - uint32_t val = 0; - asm volatile ("mrs %0, csselr_el1" : "=r" (val)); - return val; -} - -/* write to cache size selection register (CSSELR_EL1) */ -static inline void write_csselr(uint32_t val) -{ - /* - * Bits [3:1] - Cache level + 1 (0b000 = L1, 0b110 = L7, 0b111 is rsvd) - * Bit 0 - 0 = data or unified cache, 1 = instruction cache - */ - asm volatile ("msr csselr_el1, %0" : : "r" (val)); - isb(); /* ISB to sync the change to CCSIDR_EL1 */ -} - -/* read system control register (SCTLR_ELx) */ -static inline uint32_t read_sctlr(uint32_t el) -{ - uint32_t val; - SWITCH_EL("mrs %0, sctlr_el", : "=r" (val), el); - return val; -} - -/* write system control register (SCTLR_ELx) */ -static inline void write_sctlr(uint32_t val, uint32_t el) -{ - SWITCH_EL("msr sctlr_el", ", %0" : : "r" (val) : "cc", el); - isb(); -} -
/* dcache clean by virtual address to PoC */ void dcache_clean_by_va(void const *addr, size_t len); diff --git a/src/arch/arm64/include/armv8/arch/lib_helpers.h b/src/arch/arm64/include/armv8/arch/lib_helpers.h new file mode 100644 index 0000000..8c6198f --- /dev/null +++ b/src/arch/arm64/include/armv8/arch/lib_helpers.h @@ -0,0 +1,296 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2014 Google Inc + * + * 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., 51 Franklin St, Fifth Floor, Boston, + * MA 02110-1301 USA + * + * lib_helpers.h: All library function prototypes and macros are defined in this + * file. + */ + +#define EL0 0 +#define EL1 1 +#define EL2 2 +#define EL3 3 + +#define CURRENT_EL_MASK 0x3 +#define CURRENT_EL_SHIFT 2 + +#define DAIF_DBG_BIT (1<<3) +#define DAIF_ABT_BIT (1<<2) +#define DAIF_IRQ_BIT (1<<1) +#define DAIF_FIQ_BIT (1<<0) + +#define SWITCH_CASE_READ(func,var,type) do { \ + type var = -1; \ + uint8_t current_el = get_current_el(); \ + switch(current_el) { \ + case EL1: \ + var = func##_el1(); \ + break; \ + case EL2: \ + var = func##_el2(); \ + break; \ + case EL3: \ + var = func##_el3(); \ + break; \ + } \ + return var; \ + } while(0) + +#define SWITCH_CASE_WRITE(func,var) do { \ + uint8_t current_el = get_current_el(); \ + switch(current_el) { \ + case EL1: \ + func##_el1(var); \ + break; \ + case EL2: \ + func##_el2(var); \ + break; \ + case EL3: \ + func##_el3(var); \ + break; \ + } \ + } while(0) + +#define SWITCH_CASE_TLBI(func) do { \ + uint8_t current_el = get_current_el(); \ + switch(current_el) { \ + case EL1: \ + func##_el1(); \ + break; \ + case EL2: \ + func##_el2(); \ + break; \ + case EL3: \ + func##_el3(); \ + break; \ + } \ + } while(0) + +/* PSTATE and special purpose register access functions */ +uint32_t raw_read_current_el(void); +uint32_t get_current_el(void); +uint32_t raw_read_daif(void); +void raw_write_daif(uint32_t daif); +void enable_debug_exceptions(void); +void enable_serror_exceptions(void); +void enable_irq(void); +void enable_fiq(void); +void disable_debug_exceptions(void); +void disable_serror_exceptions(void); +void disable_irq(void); +void disable_fiq(void); +uint64_t raw_read_dlr_el0(void); +void raw_write_dlr_el0(uint64_t dlr_el0); +uint64_t raw_read_dspsr_el0(void); +void raw_write_dspsr_el0(uint64_t dspsr_el0); +uint64_t raw_read_elr_el1(void); +void raw_write_elr_el1(uint64_t elr_el1); +uint64_t raw_read_elr_el2(void); +void raw_write_elr_el2(uint64_t elr_el2); +uint64_t raw_read_elr_el3(void); +void raw_write_elr_el3(uint64_t elr_el3); +uint64_t raw_read_elr_current(void); +void raw_write_elr_current(uint64_t elr); +uint32_t raw_read_fpcr(void); +void raw_write_fpcr(uint32_t fpcr); +uint32_t raw_read_fpsr(void); +void raw_write_fpsr(uint32_t fpsr); +uint32_t raw_read_nzcv(void); +void raw_write_nzcv(uint32_t nzcv); +uint64_t raw_read_sp_el0(void); +void raw_write_sp_el0(uint64_t sp_el0); +uint64_t raw_read_sp_el1(void); +void raw_write_sp_el1(uint64_t sp_el1); +uint64_t raw_read_sp_el2(void); +void raw_write_sp_el2(uint64_t sp_el2); +uint32_t raw_read_spsel(void); +void raw_write_spsel(uint32_t spsel); +uint64_t raw_read_sp_el3(void); +void raw_write_sp_el3(uint64_t sp_el3); +uint32_t raw_read_spsr_abt(void); +void raw_write_spsr_abt(uint32_t spsr_abt); +uint32_t raw_read_spsr_el1(void); +void raw_write_spsr_el1(uint32_t spsr_el1); +uint32_t raw_read_spsr_el2(void); +void raw_write_spsr_el2(uint32_t spsr_el2); +uint32_t raw_read_spsr_el3(void); +void raw_write_spsr_el3(uint32_t spsr_el3); +uint32_t raw_read_spsr_current(void); +void raw_write_spsr_current(uint32_t spsr); +uint32_t raw_read_spsr_fiq(void); +void raw_write_spsr_fiq(uint32_t spsr_fiq); +uint32_t raw_read_spsr_irq(void); +void raw_write_spsr_irq(uint32_t spsr_irq); +uint32_t raw_read_spsr_und(void); +void raw_write_spsr_und(uint32_t spsr_und); + +/* System control register access */ +uint32_t raw_read_actlr_el1(void); +void raw_write_actlr_el1(uint32_t actlr_el1); +uint32_t raw_read_actlr_el2(void); +void raw_write_actlr_el2(uint32_t actlr_el2); +uint32_t raw_read_actlr_el3(void); +void raw_write_actlr_el3(uint32_t actlr_el3); +uint32_t raw_read_actlr_current(void); +void raw_write_actlr_current(uint32_t actlr); +uint32_t raw_read_afsr0_el1(void); +void raw_write_afsr0_el1(uint32_t afsr0_el1); +uint32_t raw_read_afsr0_el2(void); +void raw_write_afsr0_el2(uint32_t afsr0_el2); +uint32_t raw_read_afsr0_el3(void); +void raw_write_afsr0_el3(uint32_t afsr0_el3); +uint32_t raw_read_afsr0_current(void); +void raw_write_afsr0_current(uint32_t afsr0); +uint32_t raw_read_afsr1_el1(void); +void raw_write_afsr1_el1(uint32_t afsr1_el1); +uint32_t raw_read_afsr1_el2(void); +void raw_write_afsr1_el2(uint32_t afsr1_el2); +uint32_t raw_read_afsr1_el3(void); +void raw_write_afsr1_el3(uint32_t afsr1_el3); +uint32_t raw_read_afsr1_current(void); +void raw_write_afsr1_current(uint32_t afsr1); +uint32_t raw_read_aidr_el1(void); +uint64_t raw_read_amair_el1(void); +void raw_write_amair_el1(uint64_t amair_el1); +uint64_t raw_read_amair_el2(void); +void raw_write_amair_el2(uint64_t amair_el2); +uint64_t raw_read_amair_el3(void); +void raw_write_amair_el3(uint64_t amair_el3); +uint64_t raw_read_amair_current(void); +void raw_write_amair_current(uint64_t amair); +uint32_t raw_read_ccsidr_el1(void); +uint32_t raw_read_clidr_el1(void); +uint32_t raw_read_cpacr_el1(void); +void raw_write_cpacr_el1(uint32_t cpacr_el1); +uint32_t raw_read_cptr_el2(void); +void raw_write_cptr_el2(uint32_t cptr_el2); +uint32_t raw_read_cptr_el3(void); +void raw_write_cptr_el3(uint32_t cptr_el3); +uint32_t raw_read_cptr_current(void); +void raw_write_cptr_current(uint32_t cptr); +uint32_t raw_read_csselr_el1(void); +void raw_write_csselr_el1(uint32_t csselr_el1); +uint32_t raw_read_ctr_el0(void); +uint32_t raw_read_esr_el1(void); +void raw_write_esr_el1(uint32_t esr_el1); +uint32_t raw_read_esr_el2(void); +void raw_write_esr_el2(uint32_t esr_el2); +uint32_t raw_read_esr_el3(void); +void raw_write_esr_el3(uint32_t esr_el3); +uint32_t raw_read_esr_current(void); +void raw_write_esr_current(uint32_t esr); +uint64_t raw_read_far_el1(void); +void raw_write_far_el1(uint64_t far_el1); +uint64_t raw_read_far_el2(void); +void raw_write_far_el2(uint64_t far_el2); +uint64_t raw_read_far_el3(void); +void raw_write_far_el3(uint64_t far_el3); +uint64_t raw_read_far_current(void); +void raw_write_far_current(uint64_t far); +uint64_t raw_read_hcr_el2(void); +void raw_write_hcr_el2(uint64_t hcr_el2); +uint64_t raw_read_aa64pfr0_el1(void); +uint64_t raw_read_mair_el1(void); +void raw_write_mair_el1(uint64_t mair_el1); +uint64_t raw_read_mair_el2(void); +void raw_write_mair_el2(uint64_t mair_el2); +uint64_t raw_read_mair_el3(void); +void raw_write_mair_el3(uint64_t mair_el3); +uint64_t raw_read_mair_current(void); +void raw_write_mair_current(uint64_t mair); +uint64_t raw_read_mpidr_el1(void); +uint32_t raw_read_rmr_el1(void); +void raw_write_rmr_el1(uint32_t rmr_el1); +uint32_t raw_read_rmr_el2(void); +void raw_write_rmr_el2(uint32_t rmr_el2); +uint32_t raw_read_rmr_el3(void); +void raw_write_rmr_el3(uint32_t rmr_el3); +uint32_t raw_read_rmr_current(void); +void raw_write_rmr_current(uint32_t rmr); +uint64_t raw_read_rvbar_el1(void); +void raw_write_rvbar_el1(uint64_t rvbar_el1); +uint64_t raw_read_rvbar_el2(void); +void raw_write_rvbar_el2(uint64_t rvbar_el2); +uint64_t raw_read_rvbar_el3(void); +void raw_write_rvbar_el3(uint64_t rvbar_el3); +uint64_t raw_read_rvbar_current(void); +void raw_write_rvbar_current(uint64_t rvbar); +uint32_t raw_read_scr_el3(void); +void raw_write_scr_el3(uint32_t scr_el3); +uint32_t raw_read_sctlr_el1(void); +void raw_write_sctlr_el1(uint32_t sctlr_el1); +uint32_t raw_read_sctlr_el2(void); +void raw_write_sctlr_el2(uint32_t sctlr_el2); +uint32_t raw_read_sctlr_el3(void); +void raw_write_sctlr_el3(uint32_t sctlr_el3); +uint32_t raw_read_sctlr_current(void); +void raw_write_sctlr_current(uint32_t sctlr); +uint64_t raw_read_tcr_el1(void); +void raw_write_tcr_el1(uint64_t tcr_el1); +uint32_t raw_read_tcr_el2(void); +void raw_write_tcr_el2(uint32_t tcr_el2); +uint32_t raw_read_tcr_el3(void); +void raw_write_tcr_el3(uint32_t tcr_el3); +uint64_t raw_read_ttbr0_el1(void); +void raw_write_ttbr0_el1(uint64_t ttbr0_el1); +uint64_t raw_read_ttbr0_el2(void); +void raw_write_ttbr0_el2(uint64_t ttbr0_el2); +uint64_t raw_read_ttbr0_el3(void); +void raw_write_ttbr0_el3(uint64_t ttbr0_el3); +uint64_t raw_read_ttbr0_current(void); +void raw_write_ttbr0_current(uint64_t ttbr0); +uint64_t raw_read_ttbr1_el1(void); +void raw_write_ttbr1_el1(uint64_t ttbr1_el1); +uint64_t raw_read_vbar_el1(void); +void raw_write_vbar_el1(uint64_t vbar_el1); +uint64_t raw_read_vbar_el2(void); +void raw_write_vbar_el2(uint64_t vbar_el2); +uint64_t raw_read_vbar_el3(void); +void raw_write_vbar_el3(uint64_t vbar_el3); +uint64_t raw_read_vbar_current(void); +void raw_write_vbar_current(uint64_t vbar); + +/* Cache maintenance system instructions */ +void dccisw(uint64_t cisw); +void dccivac(uint64_t civac); +void dccsw(uint64_t csw); +void dccvac(uint64_t cvac); +void dccvau(uint64_t cvau); +void dcisw(uint64_t isw); +void dcivac(uint64_t ivac); +void dczva(uint64_t zva); +void iciallu(void); +void icialluis(void); +void icivau(uint64_t ivau); + +/* TLB maintenance instructions */ +void tlbiall_el1(void); +void tlbiall_el2(void); +void tlbiall_el3(void); +void tlbiall_current(void); +void tlbiallis_el1(void); +void tlbiallis_el2(void); +void tlbiallis_el3(void); +void tlbiallis_current(void); +void tlbivaa_el1(uint64_t va); + +/* Memory barrier */ +void dmb(void); +void dsb(void); +void isb(void);
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Marc Jones