LXR uboot/arch/powerpc/cpu/mpc85xx/p1010

   1/*
   2 * Copyright 2011 Freescale Semiconductor, Inc.
   3 * Author: Prabhakar Kushwaha <prabhakar@freescale.com>
   4 *
   5 * SPDX-License-Identifier:     GPL-2.0+
   6 */
   7
   8#include <config.h>
   9#include <common.h>
  10#include <asm/io.h>
  11#include <asm/immap_85xx.h>
  12#include <asm/fsl_serdes.h>
  13
  14#define SRDS1_MAX_LANES         4
  15#define SRDS2_MAX_LANES         2
  16
  17static u32 serdes1_prtcl_map, serdes2_prtcl_map;
  18
  19static const u8 serdes1_cfg_tbl[][SRDS1_MAX_LANES] = {
  20        [0x00] = {NONE, NONE, NONE, NONE},
  21        [0x01] = {PCIE1, PCIE2, SGMII_TSEC2, SGMII_TSEC3},
  22        [0x02] = {PCIE1, SGMII_TSEC1, SGMII_TSEC2, SGMII_TSEC3},
  23        [0x03] = {NONE, SGMII_TSEC1, SGMII_TSEC2, SGMII_TSEC3},
  24};
  25
  26static const u8 serdes2_cfg_tbl[][SRDS2_MAX_LANES] = {
  27        [0x00] = {NONE, NONE},
  28        [0x01] = {SATA1, SATA2},
  29        [0x02] = {SATA1, SATA2},
  30        [0x03] = {PCIE1, PCIE2},
  31};
  32
  33
  34int is_serdes_configured(enum srds_prtcl device)
  35{
  36        int ret;
  37
  38        if (!(serdes1_prtcl_map & (1 << NONE)))
  39                fsl_serdes_init();
  40
  41        ret = (1 << device) & serdes1_prtcl_map;
  42
  43        if (ret)
  44                return ret;
  45
  46        if (!(serdes2_prtcl_map & (1 << NONE)))
  47                fsl_serdes_init();
  48
  49        return (1 << device) & serdes2_prtcl_map;
  50}
  51
  52void fsl_serdes_init(void)
  53{
  54        ccsr_gur_t *gur = (void *)CONFIG_SYS_MPC85xx_GUTS_ADDR;
  55        u32 pordevsr = in_be32(&gur->pordevsr);
  56        u32 srds_cfg = (pordevsr & MPC85xx_PORDEVSR_IO_SEL) >>
  57                                MPC85xx_PORDEVSR_IO_SEL_SHIFT;
  58        int lane;
  59
  60        if (serdes1_prtcl_map & (1 << NONE) &&
  61            serdes2_prtcl_map & (1 << NONE))
  62                return;
  63
  64        debug("PORDEVSR[IO_SEL_SRDS] = %x\n", srds_cfg);
  65
  66        if (srds_cfg >= ARRAY_SIZE(serdes1_cfg_tbl)) {
  67                printf("Invalid PORDEVSR[IO_SEL_SRDS] = %d\n", srds_cfg);
  68                return;
  69        }
  70        for (lane = 0; lane < SRDS1_MAX_LANES; lane++) {
  71                enum srds_prtcl lane_prtcl = serdes1_cfg_tbl[srds_cfg][lane];
  72                serdes1_prtcl_map |= (1 << lane_prtcl);
  73        }
  74
  75        /* Set the first bit to indicate serdes has been initialized */
  76        serdes1_prtcl_map |= (1 << NONE);
  77
  78        if (srds_cfg >= ARRAY_SIZE(serdes2_cfg_tbl)) {
  79                printf("Invalid PORDEVSR[IO_SEL_SRDS] = %d\n", srds_cfg);
  80                return;
  81        }
  82
  83        for (lane = 0; lane < SRDS2_MAX_LANES; lane++) {
  84                enum srds_prtcl lane_prtcl = serdes2_cfg_tbl[srds_cfg][lane];
  85                serdes2_prtcl_map |= (1 << lane_prtcl);
  86        }
  87
  88        /* Set the first bit to indicate serdes has been initialized */
  89        serdes2_prtcl_map |= (1 << NONE);
  90}
  91