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_85xx.h>
10 #include <asm/fsl_serdes.h>
11
12 #define SRDS1_MAX_LANES 8
13
14 static u32 serdes1_prtcl_map;
15
16 static u8 serdes1_cfg_tbl[][SRDS1_MAX_LANES] = {
17 [0x2] = {PCIE1, PCIE1, PCIE1, PCIE1, NONE, NONE, NONE, NONE},
18 [0x3] = {PCIE1, PCIE1, PCIE1, PCIE1, PCIE2, PCIE2, PCIE2, PCIE2},
19 [0x6] = {NONE, NONE, NONE, NONE, SRIO1, SRIO1, SRIO1, SRIO1},
20 [0x7] = {PCIE1, PCIE1, PCIE1, PCIE1, PCIE2, PCIE2, PCIE3, PCIE3},
21 [0xb] = {PCIE1, PCIE1, PCIE1, PCIE1, SRIO1, SRIO1, SRIO1, SRIO1},
22 [0xc] = {PCIE1, PCIE1, PCIE1, PCIE1, SRIO1, SRIO1, SRIO1, SRIO1},
23 [0xd] = {NONE, NONE, NONE, NONE, SRIO1, SRIO1, SRIO1, SRIO1},
24 [0xe] = {NONE, NONE, NONE, NONE, SRIO1, SRIO1, SRIO1, SRIO1},
25 [0xf] = {PCIE1, PCIE1, PCIE1, PCIE1, PCIE1, PCIE1, PCIE1, PCIE1},
26 };
27
is_serdes_configured(enum srds_prtcl prtcl)28 int is_serdes_configured(enum srds_prtcl prtcl)
29 {
30 if (!(serdes1_prtcl_map & (1 << NONE)))
31 fsl_serdes_init();
32
33 return (1 << prtcl) & serdes1_prtcl_map;
34 }
35
fsl_serdes_init(void)36 void fsl_serdes_init(void)
37 {
38 ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
39 u32 pordevsr = in_be32(&gur->pordevsr);
40 u32 srds_cfg = (pordevsr & MPC85xx_PORDEVSR_IO_SEL) >>
41 MPC85xx_PORDEVSR_IO_SEL_SHIFT;
42 int lane;
43
44 if (serdes1_prtcl_map & (1 << NONE))
45 return;
46
47 debug("PORDEVSR[IO_SEL_SRDS] = %x\n", srds_cfg);
48
49 if (srds_cfg >= ARRAY_SIZE(serdes1_cfg_tbl)) {
50 printf("Invalid PORDEVSR[IO_SEL_SRDS] = %d\n", srds_cfg);
51 return;
52 }
53
54 for (lane = 0; lane < SRDS1_MAX_LANES; lane++) {
55 enum srds_prtcl lane_prtcl = serdes1_cfg_tbl[srds_cfg][lane];
56 serdes1_prtcl_map |= (1 << lane_prtcl);
57 }
58
59 if (!(pordevsr & MPC85xx_PORDEVSR_SGMII1_DIS))
60 serdes1_prtcl_map |= (1 << SGMII_TSEC1);
61
62 if (!(pordevsr & MPC85xx_PORDEVSR_SGMII2_DIS))
63 serdes1_prtcl_map |= (1 << SGMII_TSEC2);
64
65 if (!(pordevsr & MPC85xx_PORDEVSR_SGMII3_DIS))
66 serdes1_prtcl_map |= (1 << SGMII_TSEC3);
67
68 if (!(pordevsr & MPC85xx_PORDEVSR_SGMII4_DIS))
69 serdes1_prtcl_map |= (1 << SGMII_TSEC4);
70
71 /* Set the first bit to indicate serdes has been initialized */
72 serdes1_prtcl_map |= (1 << NONE);
73 }
74