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_86xx.h> 10 #include <asm/fsl_serdes.h> 11 12 #define SRDS1_MAX_LANES 4 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}, 19 [0x3] = {PCIE1, PCIE1, PCIE1, PCIE1}, 20 [0x5] = {PCIE1, PCIE1, PCIE1, PCIE1}, 21 [0x6] = {PCIE1, PCIE1, PCIE1, PCIE1}, 22 [0x7] = {PCIE1, PCIE1, PCIE1, PCIE1}, 23 [0xf] = {PCIE1, PCIE1, PCIE1, PCIE1}, 24 }; 25 26 static u8 serdes2_cfg_tbl[][SRDS2_MAX_LANES] = { 27 [0x3] = {PCIE2, PCIE2, PCIE2, PCIE2}, 28 [0x5] = {SRIO1, SRIO1, SRIO1, SRIO1}, 29 [0x6] = {SRIO1, SRIO1, SRIO1, SRIO1}, 30 [0x7] = {SRIO1, SRIO1, SRIO1, SRIO1}, 31 [0x9] = {SRIO1, SRIO1, SRIO1, SRIO1}, 32 [0xa] = {SRIO1, SRIO1, SRIO1, SRIO1}, 33 [0xb] = {SRIO1, SRIO1, SRIO1, SRIO1}, 34 [0xe] = {PCIE2, PCIE2, PCIE2, PCIE2}, 35 [0xf] = {PCIE2, PCIE2, PCIE2, PCIE2}, 36 }; 37 38 int is_serdes_configured(enum srds_prtcl device) 39 { 40 int ret; 41 42 if (!(serdes1_prtcl_map & (1 << NONE))) 43 fsl_serdes_init(); 44 45 ret = (1 << device) & serdes1_prtcl_map; 46 47 if (ret) 48 return ret; 49 50 if (!(serdes2_prtcl_map & (1 << NONE))) 51 fsl_serdes_init(); 52 53 return (1 << device) & serdes2_prtcl_map; 54 } 55 56 void fsl_serdes_init(void) 57 { 58 immap_t *immap = (immap_t *) CONFIG_SYS_CCSRBAR; 59 ccsr_gur_t *gur = &immap->im_gur; 60 u32 pordevsr = in_be32(&gur->pordevsr); 61 u32 srds_cfg = (pordevsr & MPC8641_PORDEVSR_IO_SEL) >> 62 MPC8641_PORDEVSR_IO_SEL_SHIFT; 63 int lane; 64 65 if (serdes1_prtcl_map & (1 << NONE) && 66 serdes2_prtcl_map & (1 << NONE)) 67 return; 68 69 debug("PORDEVSR[IO_SEL_SRDS] = %x\n", srds_cfg); 70 71 if (srds_cfg >= ARRAY_SIZE(serdes1_cfg_tbl)) { 72 printf("Invalid PORDEVSR[IO_SEL_SRDS] = %d\n", srds_cfg); 73 return; 74 } 75 for (lane = 0; lane < SRDS1_MAX_LANES; lane++) { 76 enum srds_prtcl lane_prtcl = serdes1_cfg_tbl[srds_cfg][lane]; 77 serdes1_prtcl_map |= (1 << lane_prtcl); 78 } 79 80 /* Set the first bit to indicate serdes has been initialized */ 81 serdes1_prtcl_map |= (1 << NONE); 82 83 if (srds_cfg >= ARRAY_SIZE(serdes2_cfg_tbl)) { 84 printf("Invalid PORDEVSR[IO_SEL_SRDS] = %d\n", srds_cfg); 85 return; 86 } 87 88 for (lane = 0; lane < SRDS2_MAX_LANES; lane++) { 89 enum srds_prtcl lane_prtcl = serdes2_cfg_tbl[srds_cfg][lane]; 90 serdes2_prtcl_map |= (1 << lane_prtcl); 91 } 92 93 /* Set the first bit to indicate serdes has been initialized */ 94 serdes2_prtcl_map |= (1 << NONE); 95 } 96
