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_86xx.h>
10 #include <asm/fsl_serdes.h>
11
12 #define SRDS1_MAX_LANES 4
13 #define SRDS2_MAX_LANES 4
14
15 static u32 serdes1_prtcl_map, serdes2_prtcl_map;
16
17 static u8 serdes1_cfg_tbl[][SRDS1_MAX_LANES] = {
18 [0x2] = {PCIE1, PCIE1, PCIE1, PCIE1},
19 [0x3] = {PCIE1, PCIE1, PCIE1, PCIE1},
20 [0x5] = {PCIE1, PCIE1, PCIE1, PCIE1},
21 [0x6] = {PCIE1, PCIE1, PCIE1, PCIE1},
22 [0x7] = {PCIE1, PCIE1, PCIE1, PCIE1},
23 [0xf] = {PCIE1, PCIE1, PCIE1, PCIE1},
24 };
25
26 static u8 serdes2_cfg_tbl[][SRDS2_MAX_LANES] = {
27 [0x3] = {PCIE2, PCIE2, PCIE2, PCIE2},
28 [0x5] = {SRIO1, SRIO1, SRIO1, SRIO1},
29 [0x6] = {SRIO1, SRIO1, SRIO1, SRIO1},
30 [0x7] = {SRIO1, SRIO1, SRIO1, SRIO1},
31 [0x9] = {SRIO1, SRIO1, SRIO1, SRIO1},
32 [0xa] = {SRIO1, SRIO1, SRIO1, SRIO1},
33 [0xb] = {SRIO1, SRIO1, SRIO1, SRIO1},
34 [0xe] = {PCIE2, PCIE2, PCIE2, PCIE2},
35 [0xf] = {PCIE2, PCIE2, PCIE2, PCIE2},
36 };
37
is_serdes_configured(enum srds_prtcl device)38 int is_serdes_configured(enum srds_prtcl device)
39 {
40 int ret;
41
42 if (!(serdes1_prtcl_map & (1 << NONE)))
43 fsl_serdes_init();
44
45 ret = (1 << device) & serdes1_prtcl_map;
46
47 if (ret)
48 return ret;
49
50 if (!(serdes2_prtcl_map & (1 << NONE)))
51 fsl_serdes_init();
52
53 return (1 << device) & serdes2_prtcl_map;
54 }
55
fsl_serdes_init(void)56 void fsl_serdes_init(void)
57 {
58 immap_t *immap = (immap_t *) CONFIG_SYS_CCSRBAR;
59 ccsr_gur_t *gur = &immap->im_gur;
60 u32 pordevsr = in_be32(&gur->pordevsr);
61 u32 srds_cfg = (pordevsr & MPC8641_PORDEVSR_IO_SEL) >>
62 MPC8641_PORDEVSR_IO_SEL_SHIFT;
63 int lane;
64
65 if (serdes1_prtcl_map & (1 << NONE) &&
66 serdes2_prtcl_map & (1 << NONE))
67 return;
68
69 debug("PORDEVSR[IO_SEL_SRDS] = %x\n", srds_cfg);
70
71 if (srds_cfg >= ARRAY_SIZE(serdes1_cfg_tbl)) {
72 printf("Invalid PORDEVSR[IO_SEL_SRDS] = %d\n", srds_cfg);
73 return;
74 }
75 for (lane = 0; lane < SRDS1_MAX_LANES; lane++) {
76 enum srds_prtcl lane_prtcl = serdes1_cfg_tbl[srds_cfg][lane];
77 serdes1_prtcl_map |= (1 << lane_prtcl);
78 }
79
80 /* Set the first bit to indicate serdes has been initialized */
81 serdes1_prtcl_map |= (1 << NONE);
82
83 if (srds_cfg >= ARRAY_SIZE(serdes2_cfg_tbl)) {
84 printf("Invalid PORDEVSR[IO_SEL_SRDS] = %d\n", srds_cfg);
85 return;
86 }
87
88 for (lane = 0; lane < SRDS2_MAX_LANES; lane++) {
89 enum srds_prtcl lane_prtcl = serdes2_cfg_tbl[srds_cfg][lane];
90 serdes2_prtcl_map |= (1 << lane_prtcl);
91 }
92
93 /* Set the first bit to indicate serdes has been initialized */
94 serdes2_prtcl_map |= (1 << NONE);
95 }
96