LXR uboot/arch/powerpc/cpu/mpc8xxx/fdt.c

   1/*
   2 * Copyright 2009-2014 Freescale Semiconductor, Inc.
   3 *
   4 * This file is derived from arch/powerpc/cpu/mpc85xx/cpu.c and
   5 * arch/powerpc/cpu/mpc86xx/cpu.c. Basically this file contains
   6 * cpu specific common code for 85xx/86xx processors.
   7 * SPDX-License-Identifier:     GPL-2.0+
   8 */
   9
  10#include <common.h>
  11#include <libfdt.h>
  12#include <fdt_support.h>
  13#include <asm/mp.h>
  14#include <asm/fsl_serdes.h>
  15#include <phy.h>
  16#include <hwconfig.h>
  17
  18#ifndef CONFIG_USB_MAX_CONTROLLER_COUNT
  19#define CONFIG_USB_MAX_CONTROLLER_COUNT 1
  20#endif
  21
  22#if defined(CONFIG_MP) && (defined(CONFIG_MPC85xx) || defined(CONFIG_MPC86xx))
  23static int ft_del_cpuhandle(void *blob, int cpuhandle)
  24{
  25        int off, ret = -FDT_ERR_NOTFOUND;
  26
  27        /* if we find a match, we'll delete at it which point the offsets are
  28         * invalid so we start over from the beginning
  29         */
  30        off = fdt_node_offset_by_prop_value(blob, -1, "cpu-handle",
  31                                                &cpuhandle, 4);
  32        while (off != -FDT_ERR_NOTFOUND) {
  33                fdt_delprop(blob, off, "cpu-handle");
  34                ret = 1;
  35                off = fdt_node_offset_by_prop_value(blob, -1, "cpu-handle",
  36                                &cpuhandle, 4);
  37        }
  38
  39        return ret;
  40}
  41
  42void ft_fixup_num_cores(void *blob) {
  43        int off, num_cores, del_cores;
  44
  45        del_cores = 0;
  46        num_cores = cpu_numcores();
  47
  48        off = fdt_node_offset_by_prop_value(blob, -1, "device_type", "cpu", 4);
  49        while (off != -FDT_ERR_NOTFOUND) {
  50                u32 *reg = (u32 *)fdt_getprop(blob, off, "reg", 0);
  51                u32 phys_cpu_id = thread_to_core(*reg);
  52
  53                if (!is_core_valid(phys_cpu_id) || is_core_disabled(phys_cpu_id)) {
  54                        int ph = fdt_get_phandle(blob, off);
  55
  56                        /* Delete the cpu node once there are no cpu handles */
  57                        if (-FDT_ERR_NOTFOUND == ft_del_cpuhandle(blob, ph)) {
  58                                fdt_del_node(blob, off);
  59                                del_cores++;
  60                        }
  61                        /* either we deleted some cpu handles or the cpu node
  62                         * so we reset the offset back to the start since we
  63                         * can't trust the offsets anymore
  64                         */
  65                        off = -1;
  66                }
  67                off = fdt_node_offset_by_prop_value(blob, off,
  68                                "device_type", "cpu", 4);
  69        }
  70        debug ("%x core system found\n", num_cores);
  71        debug ("deleted %d extra core entry entries from device tree\n",
  72                                                                del_cores);
  73}
  74#endif /* defined(CONFIG_MPC85xx) || defined(CONFIG_MPC86xx) */
  75
  76int fdt_fixup_phy_connection(void *blob, int offset, phy_interface_t phyc)
  77{
  78        return fdt_setprop_string(blob, offset, "phy-connection-type",
  79                                         phy_string_for_interface(phyc));
  80}
  81
  82#ifdef CONFIG_SYS_SRIO
  83static inline void ft_disable_srio_port(void *blob, int srio_off, int port)
  84{
  85        int off = fdt_node_offset_by_prop_value(blob, srio_off,
  86                        "cell-index", &port, 4);
  87        if (off >= 0) {
  88                off = fdt_setprop_string(blob, off, "status", "disabled");
  89                if (off > 0)
  90                        printf("WARNING unable to set status for fsl,srio "
  91                                "port %d: %s\n", port, fdt_strerror(off));
  92        }
  93}
  94
  95static inline void ft_disable_rman(void *blob)
  96{
  97        int off = fdt_node_offset_by_compatible(blob, -1, "fsl,rman");
  98        if (off >= 0) {
  99                off = fdt_setprop_string(blob, off, "status", "disabled");
 100                if (off > 0)
 101                        printf("WARNING unable to set status for fsl,rman %s\n",
 102                                fdt_strerror(off));
 103        }
 104}
 105
 106static inline void ft_disable_rmu(void *blob)
 107{
 108        int off = fdt_node_offset_by_compatible(blob, -1, "fsl,srio-rmu");
 109        if (off >= 0) {
 110                off = fdt_setprop_string(blob, off, "status", "disabled");
 111                if (off > 0)
 112                        printf("WARNING unable to set status for "
 113                                "fsl,srio-rmu %s\n", fdt_strerror(off));
 114        }
 115}
 116
 117void ft_srio_setup(void *blob)
 118{
 119        int srio1_used = 0, srio2_used = 0;
 120        int srio_off;
 121
 122        /* search for srio node, if doesn't exist just return - nothing todo */
 123        srio_off = fdt_node_offset_by_compatible(blob, -1, "fsl,srio");
 124        if (srio_off < 0)
 125                return ;
 126
 127#ifdef CONFIG_SRIO1
 128        if (is_serdes_configured(SRIO1))
 129                srio1_used = 1;
 130#endif
 131#ifdef CONFIG_SRIO2
 132        if (is_serdes_configured(SRIO2))
 133                srio2_used = 1;
 134#endif
 135
 136        /* mark port1 disabled */
 137        if (!srio1_used)
 138                ft_disable_srio_port(blob, srio_off, 1);
 139
 140        /* mark port2 disabled */
 141        if (!srio2_used)
 142                ft_disable_srio_port(blob, srio_off, 2);
 143
 144        /* if both ports not used, disable controller, rmu and rman */
 145        if (!srio1_used && !srio2_used) {
 146                fdt_setprop_string(blob, srio_off, "status", "disabled");
 147
 148                ft_disable_rman(blob);
 149                ft_disable_rmu(blob);
 150        }
 151}
 152#endif
 153