arc: qemu: enable MPU

Enable MPU for arc qemu.

Signed-off-by: Watson Zeng <zhiwei@synopsys.com>
This commit is contained in:
Watson Zeng 2021-03-02 10:28:34 +08:00 committed by Carles Cufí
commit 6a7982ff10
8 changed files with 83 additions and 0 deletions

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@ -0,0 +1,3 @@
# SPDX-License-Identifier: Apache-2.0
zephyr_sources_ifdef(CONFIG_ARC_MPU_ENABLE arc_mpu_regions.c)

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@ -0,0 +1,59 @@
/*
* Copyright (c) 2021 Synopsys
*
* SPDX-License-Identifier: Apache-2.0
*/
#include <devicetree.h>
#include <soc.h>
#include <arch/arc/v2/mpu/arc_mpu.h>
#include <linker/linker-defs.h>
/*
* for secure firmware, MPU entries are only set up for secure world.
* All regions not listed here are shared by secure world and normal world.
*/
static struct arc_mpu_region mpu_regions[] = {
#if defined(CONFIG_COVERAGE_GCOV) && defined(CONFIG_USERSPACE)
/* Region Coverage */
MPU_REGION_ENTRY("COVERAGE",
(uint32_t)&(__gcov_bss_start),
(uint32_t)&__gcov_bss_size,
REGION_IO_ATTR),
#endif /* CONFIG_COVERAGE_GCOV && CONFIG_USERSPACE */
#if DT_REG_SIZE(DT_CHOSEN(zephyr_sram)) > 0
/* Region RAM */
MPU_REGION_ENTRY("RAM",
DT_REG_ADDR(DT_CHOSEN(zephyr_sram)),
DT_REG_SIZE(DT_CHOSEN(zephyr_sram)),
REGION_KERNEL_RAM_ATTR | REGION_DYNAMIC),
#endif
#if DT_REG_SIZE(DT_CHOSEN(zephyr_flash)) > 0
/* Region DCCM */
MPU_REGION_ENTRY("FLASH",
DT_REG_ADDR(DT_CHOSEN(zephyr_flash)),
DT_REG_SIZE(DT_CHOSEN(zephyr_flash)),
REGION_ROM_ATTR),
#endif
/*
* Region peripheral is shared by secure world and normal world by default,
* no need a static mpu entry. If some peripherals belong to secure world,
* add it here.
*/
#ifndef CONFIG_ARC_SECURE_FIRMWARE
/* Region Peripheral */
MPU_REGION_ENTRY("PERIPHERAL",
0xF0000000,
64 * 1024,
REGION_KERNEL_RAM_ATTR),
#endif
};
struct arc_mpu_config mpu_config = {
.num_regions = ARRAY_SIZE(mpu_regions),
.mpu_regions = mpu_regions,
};

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@ -23,6 +23,8 @@ list(APPEND QEMU_FLAGS_${ARCH}
-global cpu.freq_hz=1000000
-global cpu.timer0=true
-global cpu.timer1=true
-global cpu.has-mpu=true
-global cpu.mpu-numreg=16
)
set(BOARD_DEBUG_RUNNER qemu)

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@ -11,3 +11,4 @@ CONFIG_UART_CONSOLE=y
CONFIG_SERIAL=y
CONFIG_UART_NS16550=y
CONFIG_QEMU_ICOUNT_SHIFT=6
CONFIG_ARC_MPU_ENABLE=y

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@ -11,3 +11,4 @@ CONFIG_UART_CONSOLE=y
CONFIG_SERIAL=y
CONFIG_UART_NS16550=y
CONFIG_QEMU_ICOUNT_SHIFT=6
CONFIG_ARC_MPU_ENABLE=y

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@ -27,6 +27,13 @@ config NUM_IRQ_PRIO_LEVELS
config NUM_IRQS
default 25
# Technically ARC HS supports MPUv3, but not v2. But given MPUv3
# is the same as v2 but with minimal region size of 32 bytes, we
# may assume MPUv3 is just a subset of MPUv2.
config ARC_MPU_VER
default 2
source "soc/arc/snps_qemu/Kconfig.defconfig.em"
source "soc/arc/snps_qemu/Kconfig.defconfig.hs"

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@ -4,3 +4,4 @@
config SOC_QEMU_ARC
bool "QEMU emulation of ARC cores"
select ARC
select CPU_HAS_MPU

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@ -16,4 +16,13 @@
#define SRAM_SIZE DT_REG_SIZE(DT_CHOSEN(zephyr_sram))
#endif
/*
* flash base address and size
*/
#if DT_NODE_HAS_PROP(DT_CHOSEN(zephyr_flash), reg) && \
(DT_REG_SIZE(DT_CHOSEN(zephyr_flash)) > 0)
#define FLASH_START DT_REG_ADDR(DT_CHOSEN(zephyr_flash))
#define FLASH_SIZE DT_REG_SIZE(DT_CHOSEN(zephyr_flash))
#endif
#include <arch/arc/v2/linker.ld>