LXR uboot/arch/arm/mach-keystone/keystone.c

   1// SPDX-License-Identifier: GPL-2.0+
   2/*
   3 * Keystone EVM : Board initialization
   4 *
   5 * (C) Copyright 2014
   6 *     Texas Instruments Incorporated, <www.ti.com>
   7 */
   8
   9#include <common.h>
  10#include <asm/io.h>
  11#include <asm/arch/psc_defs.h>
  12#include <asm/arch/hardware.h>
  13
  14/**
  15 * cpu_to_bus - swap bytes of the 32-bit data if the device is BE
  16 * @ptr - array of data
  17 * @length - lenght of data array
  18 */
  19int cpu_to_bus(u32 *ptr, u32 length)
  20{
  21        u32 i;
  22
  23        if (!(readl(KS2_DEVSTAT) & 0x1))
  24                for (i = 0; i < length; i++, ptr++)
  25                        *ptr = cpu_to_be32(*ptr);
  26
  27        return 0;
  28}
  29
  30static void turn_off_all_dsps(int num_dsps)
  31{
  32        int i;
  33
  34        for (i = 0; i < num_dsps; i++) {
  35                if (psc_disable_module(i + KS2_LPSC_GEM_0))
  36                        printf("Cannot disable module for #%d DSP", i);
  37
  38                if (psc_disable_domain(i + KS2_GEM_0_PWR_DOMAIN))
  39                        printf("Cannot disable domain for #%d DSP", i);
  40        }
  41}
  42
  43int misc_init_r(void)
  44{
  45        char *env;
  46        long ks2_debug = 0;
  47
  48        env = env_get("ks2_debug");
  49
  50        if (env)
  51                ks2_debug = simple_strtol(env, NULL, 0);
  52
  53        if ((ks2_debug & DBG_LEAVE_DSPS_ON) == 0)
  54                turn_off_all_dsps(KS2_NUM_DSPS);
  55
  56        return 0;
  57}
  58