board/freescale/common/ns_access.c

   1 /*
   2  * Copyright 2014 Freescale Semiconductor
   3  *
   4  * SPDX-License-Identifier:     GPL-2.0+
   5  */
   6
   7 #include <common.h>
   8 #include <asm/io.h>
   9 #include <fsl_csu.h>
  10 #include <asm/arch/ns_access.h>
  11 #include <asm/arch/fsl_serdes.h>
  12
  13 void set_devices_ns_access(unsigned long index, u16 val)
  14 {
  15         u32 *base = (u32 *)CONFIG_SYS_FSL_CSU_ADDR;
  16         u32 *reg;
  17         uint32_t tmp;
  18
  19         reg = base + index / 2;
  20         tmp = in_be32(reg);
  21         if (index % 2 == 0) {
  22                 tmp &= 0x0000ffff;
  23                 tmp |= val << 16;
  24         } else {
  25                 tmp &= 0xffff0000;
  26                 tmp |= val;
  27         }
  28
  29         out_be32(reg, tmp);
  30 }
  31
  32 static void enable_devices_ns_access(struct csu_ns_dev *ns_dev, uint32_t num)
  33 {
  34         int i;
  35
  36         for (i = 0; i < num; i++)
  37                 set_devices_ns_access(ns_dev[i].ind, ns_dev[i].val);
  38 }
  39
  40 void enable_layerscape_ns_access(void)
  41 {
  42 #ifdef CONFIG_ARM64
  43         if (current_el() == 3)
  44 #endif
  45                 enable_devices_ns_access(ns_dev, ARRAY_SIZE(ns_dev));
  46 }
  47
  48 void set_pcie_ns_access(int pcie, u16 val)
  49 {
  50         switch (pcie) {
  51 #ifdef CONFIG_PCIE1
  52         case PCIE1:
  53                 set_devices_ns_access(CSU_CSLX_PCIE1, val);
  54                 set_devices_ns_access(CSU_CSLX_PCIE1_IO, val);
  55                 return;
  56 #endif
  57 #ifdef CONFIG_PCIE2
  58         case PCIE2:
  59                 set_devices_ns_access(CSU_CSLX_PCIE2, val);
  60                 set_devices_ns_access(CSU_CSLX_PCIE2_IO, val);
  61                 return;
  62 #endif
  63 #ifdef CONFIG_PCIE3
  64         case PCIE3:
  65                 set_devices_ns_access(CSU_CSLX_PCIE3, val);
  66                 set_devices_ns_access(CSU_CSLX_PCIE3_IO, val);
  67                 return;
  68 #endif
  69         default:
  70                 debug("The PCIE%d doesn't exist!\n", pcie);
  71                 return;
  72         }
  73 }