1 /*
2  * Copyright 2010-2011 Freescale Semiconductor, Inc.
3  * Author: Roy Zang <tie-fei.zang@freescale.com>
4  *
5  * SPDX-License-Identifier:	GPL-2.0+
6  */
7 
8 #include <config.h>
9 #include <common.h>
10 #include <asm/io.h>
11 #include <asm/immap_85xx.h>
12 #include <asm/fsl_serdes.h>
13 
14 #define SRDS1_MAX_LANES		4
15 
16 static u32 serdes1_prtcl_map;
17 
18 static const u8 serdes1_cfg_tbl[][SRDS1_MAX_LANES] = {
19 	[0x00] = {PCIE1, PCIE2, NONE, NONE},
20 	[0x01] = {PCIE1, PCIE2, PCIE3, NONE},
21 	[0x02] = {PCIE1, PCIE2, PCIE3, SGMII_FM1_DTSEC2},
22 	[0x03] = {PCIE1, PCIE2, SGMII_FM1_DTSEC1, SGMII_FM1_DTSEC2},
23 };
24 
25 int is_serdes_configured(enum srds_prtcl device)
26 {
27 	int ret;
28 
29 	if (!(serdes1_prtcl_map & (1 << NONE)))
30 		fsl_serdes_init();
31 
32 	ret = (1 << device) & serdes1_prtcl_map;
33 	return ret;
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 	for (lane = 0; lane < SRDS1_MAX_LANES; lane++) {
54 		enum srds_prtcl lane_prtcl = serdes1_cfg_tbl[srds_cfg][lane];
55 		serdes1_prtcl_map |= (1 << lane_prtcl);
56 	}
57 
58 	/* Set the first bit to indicate serdes has been initialized */
59 	serdes1_prtcl_map |= (1 << NONE);
60 }
61