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 
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 
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