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 [0x1] = {PCIE1, PCIE1, PCIE1, PCIE1}, 19 [0x4] = {PCIE1, PCIE1, PCIE1, PCIE1}, 20 [0x7] = {NONE, NONE, NONE, NONE}, 21 }; 22 23 static u8 serdes2_cfg_tbl[][SRDS2_MAX_LANES] = { 24 [0x0] = {PCIE2, PCIE2, PCIE2, PCIE2}, 25 [0x4] = {PCIE2, PCIE2, PCIE2, PCIE2}, 26 [0x7] = {NONE, NONE, NONE, NONE}, 27 }; 28 29 int is_serdes_configured(enum srds_prtcl device) 30 { 31 int ret; 32 33 if (!(serdes1_prtcl_map & (1 << NONE))) 34 fsl_serdes_init(); 35 36 ret = (1 << device) & serdes1_prtcl_map; 37 38 if (ret) 39 return ret; 40 41 if (!(serdes2_prtcl_map & (1 << NONE))) 42 fsl_serdes_init(); 43 44 return (1 << device) & serdes2_prtcl_map; 45 } 46 47 void fsl_serdes_init(void) 48 { 49 immap_t *immap = (immap_t *) CONFIG_SYS_CCSRBAR; 50 ccsr_gur_t *gur = &immap->im_gur; 51 u32 pordevsr = in_be32(&gur->pordevsr); 52 u32 srds_cfg = (pordevsr & MPC8610_PORDEVSR_IO_SEL) >> 53 MPC8610_PORDEVSR_IO_SEL_SHIFT; 54 int lane; 55 56 if (serdes1_prtcl_map & (1 << NONE) && 57 serdes2_prtcl_map & (1 << NONE)) 58 return; 59 60 debug("PORDEVSR[IO_SEL_SRDS] = %x\n", srds_cfg); 61 62 if (srds_cfg >= ARRAY_SIZE(serdes1_cfg_tbl)) { 63 printf("Invalid PORDEVSR[IO_SEL_SRDS] = %d\n", srds_cfg); 64 return; 65 } 66 for (lane = 0; lane < SRDS1_MAX_LANES; lane++) { 67 enum srds_prtcl lane_prtcl = serdes1_cfg_tbl[srds_cfg][lane]; 68 serdes1_prtcl_map |= (1 << lane_prtcl); 69 } 70 71 /* Set the first bit to indicate serdes has been initialized */ 72 serdes1_prtcl_map |= (1 << NONE); 73 74 if (srds_cfg >= ARRAY_SIZE(serdes2_cfg_tbl)) { 75 printf("Invalid PORDEVSR[IO_SEL_SRDS] = %d\n", srds_cfg); 76 return; 77 } 78 79 for (lane = 0; lane < SRDS2_MAX_LANES; lane++) { 80 enum srds_prtcl lane_prtcl = serdes2_cfg_tbl[srds_cfg][lane]; 81 serdes2_prtcl_map |= (1 << lane_prtcl); 82 } 83 84 /* Set the first bit to indicate serdes has been initialized */ 85 serdes2_prtcl_map |= (1 << NONE); 86 } 87
