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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 <init.h>
#include <malloc.h>
#include <asm/arcregs.h>
#include <asm/global_data.h>
#include "axs10x.h"
#include <asm/cache.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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