mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-05 12:45:42 +00:00
7e5f460ec4
It is a pain to have to specify the value 16 in each call. Add a new hextoul() function and update the code to use it. Add a proper comment to simple_strtoul() while we are here. Signed-off-by: Simon Glass <sjg@chromium.org>
87 lines
1.5 KiB
C
87 lines
1.5 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* (C) Copyright 2014
|
|
* Gabriel Huau <contact@huau-gabriel.fr>
|
|
*
|
|
* (C) Copyright 2009 Freescale Semiconductor, Inc.
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <cpu_func.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(u32 nr)
|
|
{
|
|
/* Software reset of the CPU N */
|
|
src->scr |= cpu_reset_mask[nr];
|
|
return 0;
|
|
}
|
|
|
|
int cpu_status(u32 nr)
|
|
{
|
|
printf("core %d => %d\n", nr, !!(src->scr & cpu_ctrl_mask[nr]));
|
|
return 0;
|
|
}
|
|
|
|
int cpu_release(u32 nr, int argc, char *const argv[])
|
|
{
|
|
uint32_t boot_addr;
|
|
|
|
boot_addr = hextoul(argv[0], NULL);
|
|
|
|
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(u32 nr)
|
|
{
|
|
/* Disable the CPU N */
|
|
src->scr &= ~cpu_ctrl_mask[nr];
|
|
return 0;
|
|
}
|