1 /*
2  * Copyright 2010 Freescale Semiconductor, Inc.
3  *
4  * SPDX-License-Identifier:	GPL-2.0+
5  */
6 
7 #include <config.h>
8 #include <common.h>
9 #include <asm/io.h>
10 #include <asm/immap_85xx.h>
11 #include <asm/fsl_serdes.h>
12 
13 #define SRDS1_MAX_LANES		8
14 
15 static u32 serdes1_prtcl_map;
16 
17 static u8 serdes1_cfg_tbl[][SRDS1_MAX_LANES] = {
18 	[0x2] = {PCIE1, PCIE1, PCIE1, PCIE1, NONE, NONE, NONE, NONE},
19 	[0x3] = {PCIE1, PCIE1, PCIE1, PCIE1, PCIE2, PCIE2, PCIE2, PCIE2},
20 	[0x6] = {NONE, NONE, NONE, NONE, SRIO1, SRIO1, SRIO1, SRIO1},
21 	[0x7] = {PCIE1, PCIE1, PCIE1, PCIE1, PCIE2, PCIE2, PCIE3, PCIE3},
22 	[0xb] = {PCIE1, PCIE1, PCIE1, PCIE1, SRIO1, SRIO1, SRIO1, SRIO1},
23 	[0xc] = {PCIE1, PCIE1, PCIE1, PCIE1, SRIO1, SRIO1, SRIO1, SRIO1},
24 	[0xd] = {NONE, NONE, NONE, NONE, SRIO1, SRIO1, SRIO1, SRIO1},
25 	[0xe] = {NONE, NONE, NONE, NONE, SRIO1, SRIO1, SRIO1, SRIO1},
26 	[0xf] = {PCIE1, PCIE1, PCIE1, PCIE1, PCIE1, PCIE1, PCIE1, PCIE1},
27 };
28 
29 int is_serdes_configured(enum srds_prtcl prtcl)
30 {
31 	if (!(serdes1_prtcl_map & (1 << NONE)))
32 		fsl_serdes_init();
33 
34 	return (1 << prtcl) & serdes1_prtcl_map;
35 }
36 
37 void fsl_serdes_init(void)
38 {
39 	ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
40 	u32 pordevsr = in_be32(&gur->pordevsr);
41 	u32 srds_cfg = (pordevsr & MPC85xx_PORDEVSR_IO_SEL) >>
42 				MPC85xx_PORDEVSR_IO_SEL_SHIFT;
43 	int lane;
44 
45 	if (serdes1_prtcl_map & (1 << NONE))
46 		return;
47 
48 	debug("PORDEVSR[IO_SEL_SRDS] = %x\n", srds_cfg);
49 
50 	if (srds_cfg >= ARRAY_SIZE(serdes1_cfg_tbl)) {
51 		printf("Invalid PORDEVSR[IO_SEL_SRDS] = %d\n", srds_cfg);
52 		return;
53 	}
54 
55 	for (lane = 0; lane < SRDS1_MAX_LANES; lane++) {
56 		enum srds_prtcl lane_prtcl = serdes1_cfg_tbl[srds_cfg][lane];
57 		serdes1_prtcl_map |= (1 << lane_prtcl);
58 	}
59 
60 	if (!(pordevsr & MPC85xx_PORDEVSR_SGMII1_DIS))
61 		serdes1_prtcl_map |= (1 << SGMII_TSEC1);
62 
63 	if (!(pordevsr & MPC85xx_PORDEVSR_SGMII2_DIS))
64 		serdes1_prtcl_map |= (1 << SGMII_TSEC2);
65 
66 	if (!(pordevsr & MPC85xx_PORDEVSR_SGMII3_DIS))
67 		serdes1_prtcl_map |= (1 << SGMII_TSEC3);
68 
69 	if (!(pordevsr & MPC85xx_PORDEVSR_SGMII4_DIS))
70 		serdes1_prtcl_map |= (1 << SGMII_TSEC4);
71 
72 	/* Set the first bit to indicate serdes has been initialized */
73 	serdes1_prtcl_map |= (1 << NONE);
74 }
75