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/*
* (C) Copyright 2014
* Gabriel Huau <contact@huau-gabriel.fr>
*
* (C) Copyright 2009 Freescale Semiconductor, Inc.
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <asm/io.h>
#include <linux/errno.h>
#include <asm/arch/sys_proto.h>
#include <asm/arch/imx-regs.h>
#define MAX_CPUS 4
static struct src *src = (struct src *)SRC_BASE_ADDR;
static uint32_t cpu_reset_mask[MAX_CPUS] = {
0, /* We don't really want to modify the cpu0 */
SRC_SCR_CORE_1_RESET_MASK,
SRC_SCR_CORE_2_RESET_MASK,
SRC_SCR_CORE_3_RESET_MASK
};
static uint32_t cpu_ctrl_mask[MAX_CPUS] = {
0, /* We don't really want to modify the cpu0 */
SRC_SCR_CORE_1_ENABLE_MASK,
SRC_SCR_CORE_2_ENABLE_MASK,
SRC_SCR_CORE_3_ENABLE_MASK
};
int cpu_reset(int nr)
{
/* Software reset of the CPU N */
src->scr |= cpu_reset_mask[nr];
return 0;
}
int cpu_status(int nr)
{
printf("core %d => %d\n", nr, !!(src->scr & cpu_ctrl_mask[nr]));
return 0;
}
int cpu_release(int nr, int argc, char *const argv[])
{
uint32_t boot_addr;
boot_addr = simple_strtoul(argv[0], NULL, 16);
switch (nr) {
case 1:
src->gpr3 = boot_addr;
break;
case 2:
src->gpr5 = boot_addr;
break;
case 3:
src->gpr7 = boot_addr;
break;
default:
return 1;
}
/* CPU N is ready to start */
src->scr |= cpu_ctrl_mask[nr];
return 0;
}
int is_core_valid(unsigned int core)
{
uint32_t nr_cores = get_nr_cpus();
if (core > nr_cores)
return 0;
return 1;
}
int cpu_disable(int nr)
{
/* Disable the CPU N */
src->scr &= ~cpu_ctrl_mask[nr];
return 0;
}
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