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      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		4
     13 
     14 static u32 serdes1_prtcl_map;
     15 
     16 static u8 serdes1_cfg_tbl[][SRDS1_MAX_LANES] = {
     17 	[0x0] = {PCIE1, NONE, NONE, NONE},
     18 	[0x1] = {SRIO1, SRIO2, SGMII_TSEC1, SGMII_TSEC2},
     19 	[0x2] = {SRIO1, SRIO2, SGMII_TSEC1, SGMII_TSEC2},
     20 	[0x3] = {SRIO1, SRIO2, NONE, NONE},
     21 	[0x4] = {PCIE1, NONE, SGMII_TSEC1, SGMII_TSEC2},
     22 	[0x5] = {PCIE1, PCIE1, SGMII_TSEC1, SGMII_TSEC2},
     23 	[0x6] = {PCIE1, NONE, SRIO1, SRIO2},
     24 	[0x7] = {PCIE1, PCIE1, SRIO1, SRIO2},
     25 	[0x8] = {PCIE1, PCIE1, SRIO1, SRIO2},
     26 	[0x9] = {SRIO1, SRIO1, SRIO1, SRIO1},
     27 	[0xa] = {SRIO1, SRIO1, SRIO1, SRIO1},
     28 	[0xb] = {SRIO1, SRIO1, SRIO1, SRIO1},
     29 	[0xc] = {PCIE1, SRIO1, SGMII_TSEC1, SGMII_TSEC2},
     30 	[0xf] = {PCIE1, PCIE1, PCIE1, PCIE1},
     31 };
     32 
     33 int is_serdes_configured(enum srds_prtcl prtcl)
     34 {
     35 	if (!(serdes1_prtcl_map & (1 << NONE)))
     36 		fsl_serdes_init();
     37 
     38 	return (1 << prtcl) & serdes1_prtcl_map;
     39 }
     40 
     41 void fsl_serdes_init(void)
     42 {
     43 	ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
     44 	u32 pordevsr = in_be32(&gur->pordevsr);
     45 	u32 srds_cfg = (pordevsr & MPC85xx_PORDEVSR_IO_SEL) >>
     46 				MPC85xx_PORDEVSR_IO_SEL_SHIFT;
     47 	int lane;
     48 
     49 	if (serdes1_prtcl_map & (1 << NONE))
     50 		return;
     51 
     52 	debug("PORDEVSR[IO_SEL_SRDS] = %x\n", srds_cfg);
     53 
     54 	if (srds_cfg >= ARRAY_SIZE(serdes1_cfg_tbl)) {
     55 		printf("Invalid PORDEVSR[IO_SEL_SRDS] = %d\n", srds_cfg);
     56 		return;
     57 	}
     58 
     59 	for (lane = 0; lane < SRDS1_MAX_LANES; lane++) {
     60 		enum srds_prtcl lane_prtcl = serdes1_cfg_tbl[srds_cfg][lane];
     61 		serdes1_prtcl_map |= (1 << lane_prtcl);
     62 	}
     63 
     64 	/* Set the first bit to indicate serdes has been initialized */
     65 	serdes1_prtcl_map |= (1 << NONE);
     66 }
     67