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 4
13
14 static u32 serdes1_prtcl_map;
15
16 static u8 serdes1_cfg_tbl[][SRDS1_MAX_LANES] = {
17 [0x0] = {PCIE1, NONE, NONE, NONE},
18 [0x2] = {PCIE1, PCIE2, PCIE3, PCIE3},
19 [0x4] = {PCIE1, PCIE1, PCIE3, PCIE3},
20 [0x6] = {PCIE1, PCIE1, PCIE1, PCIE1},
21 [0x7] = {SRIO2, SRIO1, NONE, NONE},
22 [0x8] = {SRIO2, SRIO2, SRIO2, SRIO2},
23 [0x9] = {SRIO2, SRIO2, SRIO2, SRIO2},
24 [0xa] = {SRIO2, SRIO2, SRIO2, SRIO2},
25 [0xb] = {SRIO2, SRIO1, SGMII_TSEC2, SGMII_TSEC3},
26 [0xc] = {SRIO2, SRIO1, SGMII_TSEC2, SGMII_TSEC3},
27 [0xd] = {PCIE1, SRIO1, SGMII_TSEC2, SGMII_TSEC3},
28 [0xe] = {PCIE1, PCIE2, SGMII_TSEC2, SGMII_TSEC3},
29 [0xf] = {PCIE1, PCIE1, SGMII_TSEC2, SGMII_TSEC3},
30 };
31
is_serdes_configured(enum srds_prtcl prtcl)32 int is_serdes_configured(enum srds_prtcl prtcl)
33 {
34 if (!(serdes1_prtcl_map & (1 << NONE)))
35 fsl_serdes_init();
36
37 return (1 << prtcl) & serdes1_prtcl_map;
38 }
39
fsl_serdes_init(void)40 void fsl_serdes_init(void)
41 {
42 ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
43 u32 pordevsr = in_be32(&gur->pordevsr);
44 u32 srds_cfg = (pordevsr & MPC85xx_PORDEVSR_IO_SEL) >>
45 MPC85xx_PORDEVSR_IO_SEL_SHIFT;
46 int lane;
47
48 if (serdes1_prtcl_map & (1 << NONE))
49 return;
50
51 debug("PORDEVSR[IO_SEL_SRDS] = %x\n", srds_cfg);
52
53 if (srds_cfg >= ARRAY_SIZE(serdes1_cfg_tbl)) {
54 printf("Invalid PORDEVSR[IO_SEL_SRDS] = %d\n", srds_cfg);
55 return;
56 }
57
58 for (lane = 0; lane < SRDS1_MAX_LANES; lane++) {
59 enum srds_prtcl lane_prtcl = serdes1_cfg_tbl[srds_cfg][lane];
60 serdes1_prtcl_map |= (1 << lane_prtcl);
61 }
62
63 /* Set the first bit to indicate serdes has been initialized */
64 serdes1_prtcl_map |= (1 << NONE);
65 }
66