1 /*
2  * Copyright 2013 Freescale Semiconductor, Inc.
3  * Author: Prabhakar Kushwaha <prabhakar@freescale.com>
4  *
5  * SPDX-License-Identifier:	GPL-2.0+
6  */
7 
8 #include <config.h>
9 #include <common.h>
10 #include <asm/io.h>
11 #include <asm/immap_85xx.h>
12 #include <asm/fsl_serdes.h>
13 
14 #define SRDS1_MAX_LANES		4
15 
16 static u32 serdes1_prtcl_map;
17 
18 static u8 serdes1_cfg_tbl[][SRDS1_MAX_LANES] = {
19 	 [0] = {NONE, NONE, NONE, NONE},
20 	 [1] = {PCIE1, PCIE2, CPRI2, CPRI1},
21 	 [2] = {PCIE1, PCIE2, CPRI2, CPRI1},
22 	 [3] = {PCIE1, PCIE2, CPRI2, CPRI1},
23 	 [4] = {PCIE1, PCIE2, CPRI2, CPRI1},
24 	 [5] = {PCIE1, PCIE2, CPRI2, CPRI1},
25 	 [6] = {PCIE1, PCIE2, SGMII_TSEC1, CPRI1},
26 	 [7] = {PCIE1, PCIE2, SGMII_TSEC1, CPRI1},
27 	 [8] = {PCIE1, PCIE2, SGMII_TSEC1, CPRI1},
28 	 [9] = {PCIE1, PCIE2, SGMII_TSEC1, CPRI1},
29 	[10] = {PCIE1, PCIE2, SGMII_TSEC1, CPRI1},
30 	[11] = {PCIE1, PCIE2, SGMII_TSEC1, SGMII_TSEC2},
31 	[12] = {PCIE1, SGMII_TSEC2, CPRI2, CPRI1},
32 	[13] = {PCIE1, SGMII_TSEC2, CPRI2, CPRI1},
33 	[14] = {PCIE1, SGMII_TSEC2, CPRI2, CPRI1},
34 	[15] = {PCIE1, SGMII_TSEC2, CPRI2, CPRI1},
35 	[16] = {PCIE1, SGMII_TSEC2, CPRI2, CPRI1},
36 	[17] = {PCIE1, SGMII_TSEC2, SGMII_TSEC1, CPRI1},
37 	[18] = {PCIE1, SGMII_TSEC2, SGMII_TSEC1, CPRI1},
38 	[19] = {PCIE1, SGMII_TSEC2, SGMII_TSEC1, CPRI1},
39 	[20] = {PCIE1, SGMII_TSEC2, SGMII_TSEC1, CPRI1},
40 	[21] = {PCIE1, SGMII_TSEC2, SGMII_TSEC1, CPRI1},
41 	[22] = {PCIE1, PCIE2, CPRI2, CPRI1},
42 	[23] = {PCIE1, PCIE2, CPRI2, CPRI1},
43 	[24] = {PCIE1, PCIE2, CPRI2, CPRI1},
44 	[25] = {PCIE1, PCIE2, CPRI2, CPRI1},
45 	[26] = {PCIE1, PCIE2, CPRI2, CPRI1},
46 	[27] = {PCIE1, PCIE2, SGMII_TSEC1, CPRI1},
47 	[28] = {PCIE1, PCIE2, SGMII_TSEC1, CPRI1},
48 	[29] = {PCIE1, PCIE2, SGMII_TSEC1, CPRI1},
49 	[30] = {PCIE1, PCIE2, SGMII_TSEC1, CPRI1},
50 	[31] = {PCIE1, PCIE2, SGMII_TSEC1, CPRI1},
51 	[32] = {PCIE1, PCIE2, SGMII_TSEC1, SGMII_TSEC2},
52 	[33] = {PCIE1, SGMII_TSEC2, CPRI2, CPRI1},
53 	[34] = {PCIE1, SGMII_TSEC2, CPRI2, CPRI1},
54 	[35] = {PCIE1, SGMII_TSEC2, CPRI2, CPRI1},
55 	[36] = {PCIE1, SGMII_TSEC2, CPRI2, CPRI1},
56 	[37] = {PCIE1, SGMII_TSEC2, CPRI2, CPRI1},
57 	[38] = {PCIE1, SGMII_TSEC2, SGMII_TSEC1, CPRI1},
58 	[39] = {PCIE1, SGMII_TSEC2, SGMII_TSEC1, CPRI1},
59 	[40] = {PCIE1, SGMII_TSEC2, SGMII_TSEC1, CPRI1},
60 	[41] = {PCIE1, SGMII_TSEC2, SGMII_TSEC1, CPRI1},
61 	[42] = {PCIE1, SGMII_TSEC2, SGMII_TSEC1, CPRI1},
62 	[43] = {SGMII_TSEC1, SGMII_TSEC2, CPRI2, CPRI1},
63 	[44] = {SGMII_TSEC1, SGMII_TSEC2, CPRI2, CPRI1},
64 	[45] = {SGMII_TSEC1, SGMII_TSEC2, CPRI2, CPRI1},
65 	[46] = {SGMII_TSEC1, SGMII_TSEC2, CPRI2, CPRI1},
66 	[47] = {SGMII_TSEC1, SGMII_TSEC2, CPRI2, CPRI1},
67 };
68 
69 int is_serdes_configured(enum srds_prtcl prtcl)
70 {
71 	if (!(serdes1_prtcl_map & (1 << NONE)))
72 		fsl_serdes_init();
73 
74 	return (1 << prtcl) & serdes1_prtcl_map;
75 }
76 
77 void fsl_serdes_init(void)
78 {
79 	ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
80 	u32 pordevsr = in_be32(&gur->pordevsr);
81 	u32 srds_cfg = (pordevsr & MPC85xx_PORDEVSR_IO_SEL) >>
82 				MPC85xx_PORDEVSR_IO_SEL_SHIFT;
83 	int lane;
84 
85 	if (serdes1_prtcl_map & (1 << NONE))
86 		return;
87 
88 	debug("PORDEVSR[IO_SEL_SRDS] = %x\n", srds_cfg);
89 
90 	if (srds_cfg >= ARRAY_SIZE(serdes1_cfg_tbl)) {
91 		printf("Invalid PORDEVSR[IO_SEL_SRDS] = %d\n", srds_cfg);
92 		return;
93 	}
94 
95 	for (lane = 0; lane < SRDS1_MAX_LANES; lane++) {
96 		enum srds_prtcl lane_prtcl = serdes1_cfg_tbl[srds_cfg][lane];
97 		serdes1_prtcl_map |= (1 << lane_prtcl);
98 	}
99 
100 	/* Set the first bit to indicate serdes has been initialized */
101 	serdes1_prtcl_map |= (1 << NONE);
102 }
103