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 <log.h>
9 #include <asm/io.h>
10 #include <asm/immap_85xx.h>
11 #include <asm/fsl_serdes.h>
12
13 #define SRDS1_MAX_LANES 8
14 #define SRDS2_MAX_LANES 4
15
16 static u32 serdes1_prtcl_map, serdes2_prtcl_map;
17
18 static u8 serdes1_cfg_tbl[][SRDS1_MAX_LANES] = {
19 [0x2] = {PCIE1, PCIE1, PCIE1, PCIE1, NONE, NONE, NONE, NONE},
20 [0x3] = {PCIE1, PCIE1, PCIE1, PCIE1, NONE, NONE, NONE, NONE},
21 [0x4] = {PCIE1, PCIE1, PCIE1, PCIE1, PCIE2, PCIE2, PCIE2, PCIE2},
22 [0x5] = {PCIE1, PCIE1, PCIE1, PCIE1, PCIE2, PCIE2, PCIE2, PCIE2},
23 [0x6] = {PCIE1, PCIE1, PCIE1, PCIE1, PCIE2, PCIE2, PCIE2, PCIE2},
24 [0x7] = {PCIE1, PCIE1, PCIE1, PCIE1, PCIE2, PCIE2, PCIE2, PCIE2},
25 };
26
27 static u8 serdes2_cfg_tbl[][SRDS2_MAX_LANES] = {
28 [0x1] = {NONE, NONE, SGMII_TSEC1, SGMII_TSEC3},
29 [0x3] = {NONE, NONE, SGMII_TSEC1, SGMII_TSEC3},
30 [0x5] = {NONE, NONE, SGMII_TSEC1, SGMII_TSEC3},
31 [0x6] = {PCIE3, NONE, NONE, NONE},
32 [0x7] = {PCIE3, NONE, SGMII_TSEC1, SGMII_TSEC3},
33 };
34
is_serdes_configured(enum srds_prtcl device)35 int is_serdes_configured(enum srds_prtcl device)
36 {
37 int ret;
38
39 if (!(serdes1_prtcl_map & (1 << NONE)))
40 fsl_serdes_init();
41
42 ret = (1 << device) & serdes1_prtcl_map;
43
44 if (ret)
45 return ret;
46
47 if (!(serdes2_prtcl_map & (1 << NONE)))
48 fsl_serdes_init();
49
50 return (1 << device) & serdes2_prtcl_map;
51 }
52
fsl_serdes_init(void)53 void fsl_serdes_init(void)
54 {
55 ccsr_gur_t *gur = (void *)CONFIG_SYS_MPC85xx_GUTS_ADDR;
56 u32 pordevsr = in_be32(&gur->pordevsr);
57 u32 srds_cfg = (pordevsr & MPC85xx_PORDEVSR_IO_SEL) >>
58 MPC85xx_PORDEVSR_IO_SEL_SHIFT;
59 int lane;
60
61 if (serdes1_prtcl_map & (1 << NONE) &&
62 serdes2_prtcl_map & (1 << NONE))
63 return;
64
65 debug("PORDEVSR[IO_SEL_SRDS] = %x\n", srds_cfg);
66
67 if (srds_cfg >= ARRAY_SIZE(serdes1_cfg_tbl)) {
68 printf("Invalid PORDEVSR[IO_SEL_SRDS] = %d\n", srds_cfg);
69 return;
70 }
71 for (lane = 0; lane < SRDS1_MAX_LANES; lane++) {
72 enum srds_prtcl lane_prtcl = serdes1_cfg_tbl[srds_cfg][lane];
73 serdes1_prtcl_map |= (1 << lane_prtcl);
74 }
75
76 /* Set the first bit to indicate serdes has been initialized */
77 serdes1_prtcl_map |= (1 << NONE);
78
79 if (srds_cfg >= ARRAY_SIZE(serdes2_cfg_tbl)) {
80 printf("Invalid PORDEVSR[IO_SEL_SRDS] = %d\n", srds_cfg);
81 return;
82 }
83
84 for (lane = 0; lane < SRDS2_MAX_LANES; lane++) {
85 enum srds_prtcl lane_prtcl = serdes2_cfg_tbl[srds_cfg][lane];
86 serdes2_prtcl_map |= (1 << lane_prtcl);
87 }
88
89 if (pordevsr & MPC85xx_PORDEVSR_SGMII1_DIS)
90 serdes2_prtcl_map &= ~(1 << SGMII_TSEC1);
91
92 if (pordevsr & MPC85xx_PORDEVSR_SGMII3_DIS)
93 serdes2_prtcl_map &= ~(1 << SGMII_TSEC3);
94
95 /* Set the first bit to indicate serdes has been initialized */
96 serdes2_prtcl_map |= (1 << NONE);
97 }
98