1 /*
2  * Copyright 2011 Freescale Semiconductor, Inc.
3  * Author: Prabhakar Kushwaha <prabhakar@freescale.com>
4  *
5  * This program is free software; you can redistribute it and/or modify it
6  * under the terms of the GNU General Public License as published by the Free
7  * Software Foundation; either version 2 of the License, or (at your option)
8  * any later version.
9  */
10 
11 #include <config.h>
12 #include <common.h>
13 #include <asm/io.h>
14 #include <asm/immap_85xx.h>
15 #include <asm/fsl_serdes.h>
16 
17 #define SRDS1_MAX_LANES		4
18 #define SRDS2_MAX_LANES		2
19 
20 static u32 serdes1_prtcl_map, serdes2_prtcl_map;
21 
22 static const u8 serdes1_cfg_tbl[][SRDS1_MAX_LANES] = {
23 	[0x00] = {NONE, NONE, NONE, NONE},
24 	[0x01] = {PCIE1, PCIE2, SGMII_TSEC2, SGMII_TSEC3},
25 	[0x02] = {PCIE1, SGMII_TSEC1, SGMII_TSEC2, SGMII_TSEC3},
26 	[0x03] = {NONE, SGMII_TSEC1, SGMII_TSEC2, SGMII_TSEC3},
27 };
28 
29 static const u8 serdes2_cfg_tbl[][SRDS2_MAX_LANES] = {
30 	[0x00] = {NONE, NONE},
31 	[0x01] = {SATA1, SATA2},
32 	[0x02] = {SATA1, SATA2},
33 	[0x03] = {PCIE1, PCIE2},
34 };
35 
36 
37 int is_serdes_configured(enum srds_prtcl device)
38 {
39 	int ret = (1 << device) & serdes1_prtcl_map;
40 
41 	if (ret)
42 		return ret;
43 
44 	return (1 << device) & serdes2_prtcl_map;
45 }
46 
47 void fsl_serdes_init(void)
48 {
49 	ccsr_gur_t *gur = (void *)CONFIG_SYS_MPC85xx_GUTS_ADDR;
50 	u32 pordevsr = in_be32(&gur->pordevsr);
51 	u32 srds_cfg = (pordevsr & MPC85xx_PORDEVSR_IO_SEL) >>
52 				MPC85xx_PORDEVSR_IO_SEL_SHIFT;
53 	int lane;
54 
55 	debug("PORDEVSR[IO_SEL_SRDS] = %x\n", srds_cfg);
56 
57 	if (srds_cfg > ARRAY_SIZE(serdes1_cfg_tbl)) {
58 		printf("Invalid PORDEVSR[IO_SEL_SRDS] = %d\n", srds_cfg);
59 		return;
60 	}
61 	for (lane = 0; lane < SRDS1_MAX_LANES; lane++) {
62 		enum srds_prtcl lane_prtcl = serdes1_cfg_tbl[srds_cfg][lane];
63 		serdes1_prtcl_map |= (1 << lane_prtcl);
64 	}
65 
66 	if (srds_cfg > ARRAY_SIZE(serdes2_cfg_tbl)) {
67 		printf("Invalid PORDEVSR[IO_SEL_SRDS] = %d\n", srds_cfg);
68 		return;
69 	}
70 
71 	for (lane = 0; lane < SRDS2_MAX_LANES; lane++) {
72 		enum srds_prtcl lane_prtcl = serdes2_cfg_tbl[srds_cfg][lane];
73 		serdes2_prtcl_map |= (1 << lane_prtcl);
74 	}
75 }
76