LXR uboot/arch/powerpc/cpu/mpc85xx/mpc8568

   1// SPDX-License-Identifier: GPL-2.0+
   2/*
   3 * Copyright 2010 Freescale Semiconductor, Inc.
   4 */
   5
   6#include <config.h>
   7#include <common.h>
   8#include <log.h>
   9#include <asm/io.h>
  10#include <asm/immap_85xx.h>
  11#include <asm/fsl_serdes.h>
  12
  13#define SRDS1_MAX_LANES         8
  14
  15static u32 serdes1_prtcl_map;
  16
  17static u8 serdes1_cfg_tbl[][SRDS1_MAX_LANES] = {
  18        [0x3] = {PCIE1, PCIE1, PCIE1, PCIE1, SRIO1, SRIO1, SRIO1, SRIO1},
  19        [0x4] = {PCIE1, PCIE1, PCIE1, PCIE1, SRIO1, SRIO1, SRIO1, SRIO1},
  20        [0x5] = {NONE, NONE, NONE, NONE, SRIO1, SRIO1, SRIO1, SRIO1},
  21        [0x6] = {NONE, NONE, NONE, NONE, SRIO1, SRIO1, SRIO1, SRIO1},
  22        [0x7] = {PCIE1, PCIE1, PCIE1, PCIE1, PCIE1, PCIE1, PCIE1, PCIE1},
  23};
  24
  25int is_serdes_configured(enum srds_prtcl prtcl)
  26{
  27        if (!(serdes1_prtcl_map & (1 << NONE)))
  28                fsl_serdes_init();
  29
  30        return (1 << prtcl) & serdes1_prtcl_map;
  31}
  32
  33void fsl_serdes_init(void)
  34{
  35        ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
  36        u32 pordevsr = in_be32(&gur->pordevsr);
  37        u32 srds_cfg = (pordevsr & MPC85xx_PORDEVSR_IO_SEL) >>
  38                                MPC85xx_PORDEVSR_IO_SEL_SHIFT;
  39        int lane;
  40
  41        if (serdes1_prtcl_map & (1 << NONE))
  42                return;
  43
  44        debug("PORDEVSR[IO_SEL_SRDS] = %x\n", srds_cfg);
  45
  46        if (srds_cfg >= ARRAY_SIZE(serdes1_cfg_tbl)) {
  47                printf("Invalid PORDEVSR[IO_SEL_SRDS] = %d\n", srds_cfg);
  48                return;
  49        }
  50
  51        for (lane = 0; lane < SRDS1_MAX_LANES; lane++) {
  52                enum srds_prtcl lane_prtcl = serdes1_cfg_tbl[srds_cfg][lane];
  53                serdes1_prtcl_map |= (1 << lane_prtcl);
  54        }
  55
  56        /* Set the first bit to indicate serdes has been initialized */
  57        serdes1_prtcl_map |= (1 << NONE);
  58}
  59