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		4
14 
15 static u32 serdes1_prtcl_map;
16 
17 static u8 serdes1_cfg_tbl[][SRDS1_MAX_LANES] = {
18 	[0x0] = {PCIE1, NONE, NONE, NONE},
19 	[0x2] = {PCIE1, PCIE2, PCIE3, PCIE3},
20 	[0x4] = {PCIE1, PCIE1, PCIE3, PCIE3},
21 	[0x6] = {PCIE1, PCIE1, PCIE1, PCIE1},
22 	[0x7] = {SRIO2, SRIO1, NONE, NONE},
23 	[0x8] = {SRIO2, SRIO2, SRIO2, SRIO2},
24 	[0x9] = {SRIO2, SRIO2, SRIO2, SRIO2},
25 	[0xa] = {SRIO2, SRIO2, SRIO2, SRIO2},
26 	[0xb] = {SRIO2, SRIO1, SGMII_TSEC2, SGMII_TSEC3},
27 	[0xc] = {SRIO2, SRIO1, SGMII_TSEC2, SGMII_TSEC3},
28 	[0xd] = {PCIE1, SRIO1, SGMII_TSEC2, SGMII_TSEC3},
29 	[0xe] = {PCIE1, PCIE2, SGMII_TSEC2, SGMII_TSEC3},
30 	[0xf] = {PCIE1, PCIE1, SGMII_TSEC2, SGMII_TSEC3},
31 };
32 
33 int is_serdes_configured(enum srds_prtcl prtcl)
34 {
35 	if (!(serdes1_prtcl_map & (1 << NONE)))
36 		fsl_serdes_init();
37 
38 	return (1 << prtcl) & serdes1_prtcl_map;
39 }
40 
41 void fsl_serdes_init(void)
42 {
43 	ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
44 	u32 pordevsr = in_be32(&gur->pordevsr);
45 	u32 srds_cfg = (pordevsr & MPC85xx_PORDEVSR_IO_SEL) >>
46 				MPC85xx_PORDEVSR_IO_SEL_SHIFT;
47 	int lane;
48 
49 	if (serdes1_prtcl_map & (1 << NONE))
50 		return;
51 
52 	debug("PORDEVSR[IO_SEL_SRDS] = %x\n", srds_cfg);
53 
54 	if (srds_cfg >= ARRAY_SIZE(serdes1_cfg_tbl)) {
55 		printf("Invalid PORDEVSR[IO_SEL_SRDS] = %d\n", srds_cfg);
56 		return;
57 	}
58 
59 	for (lane = 0; lane < SRDS1_MAX_LANES; lane++) {
60 		enum srds_prtcl lane_prtcl = serdes1_cfg_tbl[srds_cfg][lane];
61 		serdes1_prtcl_map |= (1 << lane_prtcl);
62 	}
63 
64 	/* Set the first bit to indicate serdes has been initialized */
65 	serdes1_prtcl_map |= (1 << NONE);
66 }
67