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