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 <asm/io.h> 9 #include <asm/immap_85xx.h> 10 #include <asm/fsl_serdes.h> 11 12 #define SRDS1_MAX_LANES 8 13 #define SRDS2_MAX_LANES 4 14 15 static u32 serdes1_prtcl_map, serdes2_prtcl_map; 16 17 static u8 serdes1_cfg_tbl[][SRDS1_MAX_LANES] = { 18 [0x2] = {PCIE1, PCIE1, PCIE1, PCIE1, NONE, NONE, NONE, NONE}, 19 [0x3] = {PCIE1, PCIE1, PCIE1, PCIE1, NONE, NONE, NONE, NONE}, 20 [0x4] = {PCIE1, PCIE1, PCIE1, PCIE1, PCIE2, PCIE2, PCIE2, PCIE2}, 21 [0x5] = {PCIE1, PCIE1, PCIE1, PCIE1, PCIE2, PCIE2, PCIE2, PCIE2}, 22 [0x6] = {PCIE1, PCIE1, PCIE1, PCIE1, PCIE2, PCIE2, PCIE2, PCIE2}, 23 [0x7] = {PCIE1, PCIE1, PCIE1, PCIE1, PCIE2, PCIE2, PCIE2, PCIE2}, 24 }; 25 26 static u8 serdes2_cfg_tbl[][SRDS2_MAX_LANES] = { 27 [0x1] = {NONE, NONE, SGMII_TSEC1, SGMII_TSEC3}, 28 [0x3] = {NONE, NONE, SGMII_TSEC1, SGMII_TSEC3}, 29 [0x5] = {NONE, NONE, SGMII_TSEC1, SGMII_TSEC3}, 30 [0x6] = {PCIE3, NONE, NONE, NONE}, 31 [0x7] = {PCIE3, NONE, SGMII_TSEC1, SGMII_TSEC3}, 32 }; 33 34 int 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 52 void 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 if (pordevsr & MPC85xx_PORDEVSR_SGMII1_DIS) 89 serdes2_prtcl_map &= ~(1 << SGMII_TSEC1); 90 91 if (pordevsr & MPC85xx_PORDEVSR_SGMII3_DIS) 92 serdes2_prtcl_map &= ~(1 << SGMII_TSEC3); 93 94 /* Set the first bit to indicate serdes has been initialized */ 95 serdes2_prtcl_map |= (1 << NONE); 96 } 97