1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * Copyright 2011 Freescale Semiconductor, Inc.
4 * Author: Prabhakar Kushwaha <prabhakar@freescale.com>
5 */
6
7 #include <config.h>
8 #include <common.h>
9 #include <log.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 #define SRDS2_MAX_LANES 2
16
17 static u32 serdes1_prtcl_map, serdes2_prtcl_map;
18
19 static const u8 serdes1_cfg_tbl[][SRDS1_MAX_LANES] = {
20 [0x00] = {NONE, NONE, NONE, NONE},
21 [0x01] = {PCIE1, PCIE2, SGMII_TSEC2, SGMII_TSEC3},
22 [0x02] = {PCIE1, SGMII_TSEC1, SGMII_TSEC2, SGMII_TSEC3},
23 [0x03] = {NONE, SGMII_TSEC1, SGMII_TSEC2, SGMII_TSEC3},
24 };
25
26 static const u8 serdes2_cfg_tbl[][SRDS2_MAX_LANES] = {
27 [0x00] = {NONE, NONE},
28 [0x01] = {SATA1, SATA2},
29 [0x02] = {SATA1, SATA2},
30 [0x03] = {PCIE1, PCIE2},
31 };
32
33
is_serdes_configured(enum srds_prtcl device)34 int is_serdes_configured(enum srds_prtcl device)
35 {
36 int ret;
37
38 if (!(serdes1_prtcl_map & (1 << NONE)))
39 fsl_serdes_init();
40
41 ret = (1 << device) & serdes1_prtcl_map;
42
43 if (ret)
44 return ret;
45
46 if (!(serdes2_prtcl_map & (1 << NONE)))
47 fsl_serdes_init();
48
49 return (1 << device) & serdes2_prtcl_map;
50 }
51
fsl_serdes_init(void)52 void fsl_serdes_init(void)
53 {
54 ccsr_gur_t *gur = (void *)CONFIG_SYS_MPC85xx_GUTS_ADDR;
55 u32 pordevsr = in_be32(&gur->pordevsr);
56 u32 srds_cfg = (pordevsr & MPC85xx_PORDEVSR_IO_SEL) >>
57 MPC85xx_PORDEVSR_IO_SEL_SHIFT;
58 int lane;
59
60 if (serdes1_prtcl_map & (1 << NONE) &&
61 serdes2_prtcl_map & (1 << NONE))
62 return;
63
64 debug("PORDEVSR[IO_SEL_SRDS] = %x\n", srds_cfg);
65
66 if (srds_cfg >= ARRAY_SIZE(serdes1_cfg_tbl)) {
67 printf("Invalid PORDEVSR[IO_SEL_SRDS] = %d\n", srds_cfg);
68 return;
69 }
70 for (lane = 0; lane < SRDS1_MAX_LANES; lane++) {
71 enum srds_prtcl lane_prtcl = serdes1_cfg_tbl[srds_cfg][lane];
72 serdes1_prtcl_map |= (1 << lane_prtcl);
73 }
74
75 /* Set the first bit to indicate serdes has been initialized */
76 serdes1_prtcl_map |= (1 << NONE);
77
78 if (srds_cfg >= ARRAY_SIZE(serdes2_cfg_tbl)) {
79 printf("Invalid PORDEVSR[IO_SEL_SRDS] = %d\n", srds_cfg);
80 return;
81 }
82
83 for (lane = 0; lane < SRDS2_MAX_LANES; lane++) {
84 enum srds_prtcl lane_prtcl = serdes2_cfg_tbl[srds_cfg][lane];
85 serdes2_prtcl_map |= (1 << lane_prtcl);
86 }
87
88 /* Set the first bit to indicate serdes has been initialized */
89 serdes2_prtcl_map |= (1 << NONE);
90 }
91