1 /* 2 * Copyright 2010 Freescale Semiconductor, Inc. 3 * 4 * See file CREDITS for list of people who contributed to this 5 * project. 6 * 7 * This program is free software; you can redistribute it and/or 8 * modify it under the terms of the GNU General Public License as 9 * published by the Free Software Foundation; either version 2 of 10 * the License, or (at your option) any later version. 11 * 12 * This program is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 * GNU General Public License for more details. 16 * 17 * You should have received a copy of the GNU General Public License 18 * along with this program; if not, write to the Free Software 19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, 20 * MA 02111-1307 USA 21 */ 22 23 #include <config.h> 24 #include <common.h> 25 #include <asm/io.h> 26 #include <asm/immap_86xx.h> 27 #include <asm/fsl_serdes.h> 28 29 #define SRDS1_MAX_LANES 4 30 #define SRDS2_MAX_LANES 4 31 32 static u32 serdes1_prtcl_map, serdes2_prtcl_map; 33 34 static u8 serdes1_cfg_tbl[][SRDS1_MAX_LANES] = { 35 [0x2] = {PCIE1, PCIE1, PCIE1, PCIE1}, 36 [0x3] = {PCIE1, PCIE1, PCIE1, PCIE1}, 37 [0x5] = {PCIE1, PCIE1, PCIE1, PCIE1}, 38 [0x6] = {PCIE1, PCIE1, PCIE1, PCIE1}, 39 [0x7] = {PCIE1, PCIE1, PCIE1, PCIE1}, 40 [0xf] = {PCIE1, PCIE1, PCIE1, PCIE1}, 41 }; 42 43 static u8 serdes2_cfg_tbl[][SRDS2_MAX_LANES] = { 44 [0x3] = {PCIE2, PCIE2, PCIE2, PCIE2}, 45 [0x5] = {SRIO1, SRIO1, SRIO1, SRIO1}, 46 [0x6] = {SRIO1, SRIO1, SRIO1, SRIO1}, 47 [0x7] = {SRIO1, SRIO1, SRIO1, SRIO1}, 48 [0x9] = {SRIO1, SRIO1, SRIO1, SRIO1}, 49 [0xa] = {SRIO1, SRIO1, SRIO1, SRIO1}, 50 [0xb] = {SRIO1, SRIO1, SRIO1, SRIO1}, 51 [0xe] = {PCIE2, PCIE2, PCIE2, PCIE2}, 52 [0xf] = {PCIE2, PCIE2, PCIE2, PCIE2}, 53 }; 54 55 int is_serdes_configured(enum srds_prtcl device) 56 { 57 int ret = (1 << device) & serdes1_prtcl_map; 58 59 if (ret) 60 return ret; 61 62 return (1 << device) & serdes2_prtcl_map; 63 } 64 65 void fsl_serdes_init(void) 66 { 67 immap_t *immap = (immap_t *) CONFIG_SYS_CCSRBAR; 68 ccsr_gur_t *gur = &immap->im_gur; 69 u32 pordevsr = in_be32(&gur->pordevsr); 70 u32 srds_cfg = (pordevsr & MPC8641_PORDEVSR_IO_SEL) >> 71 MPC8641_PORDEVSR_IO_SEL_SHIFT; 72 int lane; 73 74 debug("PORDEVSR[IO_SEL_SRDS] = %x\n", srds_cfg); 75 76 if (srds_cfg > ARRAY_SIZE(serdes1_cfg_tbl)) { 77 printf("Invalid PORDEVSR[IO_SEL_SRDS] = %d\n", srds_cfg); 78 return; 79 } 80 for (lane = 0; lane < SRDS1_MAX_LANES; lane++) { 81 enum srds_prtcl lane_prtcl = serdes1_cfg_tbl[srds_cfg][lane]; 82 serdes1_prtcl_map |= (1 << lane_prtcl); 83 } 84 85 if (srds_cfg > ARRAY_SIZE(serdes2_cfg_tbl)) { 86 printf("Invalid PORDEVSR[IO_SEL_SRDS] = %d\n", srds_cfg); 87 return; 88 } 89 90 for (lane = 0; lane < SRDS2_MAX_LANES; lane++) { 91 enum srds_prtcl lane_prtcl = serdes2_cfg_tbl[srds_cfg][lane]; 92 serdes2_prtcl_map |= (1 << lane_prtcl); 93 } 94 } 95