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d678a59d2d
When bringing in the series 'arm: dts: am62-beagleplay: Fix Beagleplay Ethernet"' I failed to notice that b4 noticed it was based on next and so took that as the base commit and merged that part of next to master. This reverts commitc8ffd1356d, reversing changes made to2ee6f3a5f7. Reported-by: Jonas Karlman <jonas@kwiboo.se> Signed-off-by: Tom Rini <trini@konsulko.com>
52 lines
1.2 KiB
C
52 lines
1.2 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (C) 2019
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* Author(s): Giulio Benetti <giulio.benetti@benettiengineering.com>
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*/
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#include <common.h>
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#include <init.h>
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#include <asm/io.h>
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#include <asm/armv7_mpu.h>
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#include <asm/mach-imx/sys_proto.h>
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#include <linux/bitops.h>
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int arch_cpu_init(void)
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{
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int i;
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struct mpu_region_config imxrt_region_config[] = {
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{ 0x00000000, REGION_0, XN_DIS, PRIV_RW_USR_RW,
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STRONG_ORDER, REGION_4GB },
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{ PHYS_SDRAM, REGION_1, XN_DIS, PRIV_RW_USR_RW,
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O_I_WB_RD_WR_ALLOC, (ffs(PHYS_SDRAM_SIZE) - 2) },
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{ DMAMEM_BASE,
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REGION_2, XN_DIS, PRIV_RW_USR_RW,
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STRONG_ORDER, (ffs(DMAMEM_SZ_ALL) - 2) },
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};
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/*
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* Configure the memory protection unit (MPU) to allow full access to
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* the whole 4GB address space.
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*/
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disable_mpu();
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for (i = 0; i < ARRAY_SIZE(imxrt_region_config); i++)
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mpu_config(&imxrt_region_config[i]);
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enable_mpu();
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return 0;
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}
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u32 get_cpu_rev(void)
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{
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#if defined(CONFIG_IMXRT1020)
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return MXC_CPU_IMXRT1020 << 12;
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#elif defined(CONFIG_IMXRT1050)
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return MXC_CPU_IMXRT1050 << 12;
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#elif defined(CONFIG_IMXRT1170)
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return MXC_CPU_IMXRT1170 << 12;
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#else
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#error This IMXRT SoC is not supported
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#endif
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}
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