mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-13 23:02:59 +00:00
cc2f7b6c7d
Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com> Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
90 lines
2 KiB
C
90 lines
2 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (C) 2013-2014 Synopsys, Inc. All rights reserved.
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*/
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#include <common.h>
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#include <dwmmc.h>
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#include <malloc.h>
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#include <asm/arcregs.h>
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#include "axs10x.h"
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DECLARE_GLOBAL_DATA_PTR;
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#define AXS_MB_CREG 0xE0011000
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int board_early_init_f(void)
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{
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if (readl((void __iomem *)AXS_MB_CREG + 0x234) & (1 << 28))
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gd->board_type = AXS_MB_V3;
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else
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gd->board_type = AXS_MB_V2;
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return 0;
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}
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#ifdef CONFIG_ISA_ARCV2
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void board_jump_and_run(ulong entry, int zero, int arch, uint params)
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{
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void (*kernel_entry)(int zero, int arch, uint params);
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kernel_entry = (void (*)(int, int, uint))entry;
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smp_set_core_boot_addr(entry, -1);
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smp_kick_all_cpus();
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kernel_entry(zero, arch, params);
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}
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#define RESET_VECTOR_ADDR 0x0
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void smp_set_core_boot_addr(unsigned long addr, int corenr)
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{
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/* All cores have reset vector pointing to 0 */
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writel(addr, (void __iomem *)RESET_VECTOR_ADDR);
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/* Make sure other cores see written value in memory */
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flush_dcache_all();
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}
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void smp_kick_all_cpus(void)
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{
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/* CPU start CREG */
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#define AXC003_CREG_CPU_START 0xF0001400
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/* Bits positions in CPU start CREG */
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#define BITS_START 0
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#define BITS_START_MODE 4
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#define BITS_CORE_SEL 9
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/*
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* In axs103 v1.1 START bits semantics has changed quite a bit.
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* We used to have a generic START bit for all cores selected by CORE_SEL mask.
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* But now we don't touch CORE_SEL at all because we have a dedicated START bit
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* for each core:
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* bit 0: Core 0 (master)
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* bit 1: Core 1 (slave)
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*/
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#define BITS_START_CORE1 1
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#define ARCVER_HS38_3_0 0x53
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int core_family = read_aux_reg(ARC_AUX_IDENTITY) & 0xff;
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int cmd = readl((void __iomem *)AXC003_CREG_CPU_START);
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if (core_family < ARCVER_HS38_3_0) {
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cmd |= (1 << BITS_CORE_SEL) | (1 << BITS_START);
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cmd &= ~(1 << BITS_START_MODE);
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} else {
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cmd |= (1 << BITS_START_CORE1);
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}
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writel(cmd, (void __iomem *)AXC003_CREG_CPU_START);
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}
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#endif
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int checkboard(void)
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{
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printf("Board: ARC Software Development Platform AXS%s\n",
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is_isa_arcv2() ? "103" : "101");
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return 0;
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};
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