1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * Copyright (C) 2016-2018 Intel Corporation <www.intel.com>
4 *
5 */
6
7 #include <asm/arch/handoff_soc64.h>
8 #include <asm/arch/system_manager.h>
9 #include <asm/global_data.h>
10 #include <asm/io.h>
11 #include <common.h>
12
13 DECLARE_GLOBAL_DATA_PTR;
14
15 /*
16 * Configure all the pin muxes
17 */
sysmgr_pinmux_init(void)18 void sysmgr_pinmux_init(void)
19 {
20 populate_sysmgr_pinmux();
21 populate_sysmgr_fpgaintf_module();
22 }
23
24 /*
25 * Populate the value for SYSMGR.FPGAINTF.MODULE based on pinmux setting.
26 * The value is not wrote to SYSMGR.FPGAINTF.MODULE but
27 * CONFIG_SYSMGR_ISWGRP_HANDOFF.
28 */
populate_sysmgr_fpgaintf_module(void)29 void populate_sysmgr_fpgaintf_module(void)
30 {
31 u32 handoff_val = 0;
32
33 /* Enable the signal for those HPS peripherals that use FPGA. */
34 if (readl(socfpga_get_sysmgr_addr() + SYSMGR_SOC64_NAND_USEFPGA) ==
35 SYSMGR_FPGAINTF_USEFPGA)
36 handoff_val |= SYSMGR_FPGAINTF_NAND;
37 if (readl(socfpga_get_sysmgr_addr() + SYSMGR_SOC64_SDMMC_USEFPGA) ==
38 SYSMGR_FPGAINTF_USEFPGA)
39 handoff_val |= SYSMGR_FPGAINTF_SDMMC;
40 if (readl(socfpga_get_sysmgr_addr() + SYSMGR_SOC64_SPIM0_USEFPGA) ==
41 SYSMGR_FPGAINTF_USEFPGA)
42 handoff_val |= SYSMGR_FPGAINTF_SPIM0;
43 if (readl(socfpga_get_sysmgr_addr() + SYSMGR_SOC64_SPIM1_USEFPGA) ==
44 SYSMGR_FPGAINTF_USEFPGA)
45 handoff_val |= SYSMGR_FPGAINTF_SPIM1;
46 writel(handoff_val,
47 socfpga_get_sysmgr_addr() + SYSMGR_SOC64_FPGAINTF_EN2);
48
49 handoff_val = 0;
50 if (readl(socfpga_get_sysmgr_addr() + SYSMGR_SOC64_EMAC0_USEFPGA) ==
51 SYSMGR_FPGAINTF_USEFPGA)
52 handoff_val |= SYSMGR_FPGAINTF_EMAC0;
53 if (readl(socfpga_get_sysmgr_addr() + SYSMGR_SOC64_EMAC1_USEFPGA) ==
54 SYSMGR_FPGAINTF_USEFPGA)
55 handoff_val |= SYSMGR_FPGAINTF_EMAC1;
56 if (readl(socfpga_get_sysmgr_addr() + SYSMGR_SOC64_EMAC2_USEFPGA) ==
57 SYSMGR_FPGAINTF_USEFPGA)
58 handoff_val |= SYSMGR_FPGAINTF_EMAC2;
59 writel(handoff_val,
60 socfpga_get_sysmgr_addr() + SYSMGR_SOC64_FPGAINTF_EN3);
61 }
62
63 /*
64 * Configure all the pin muxes
65 */
populate_sysmgr_pinmux(void)66 void populate_sysmgr_pinmux(void)
67 {
68 u32 len, i;
69 u32 len_mux = socfpga_get_handoff_size((void *)SOC64_HANDOFF_MUX, BIG_ENDIAN);
70 u32 len_ioctl = socfpga_get_handoff_size((void *)SOC64_HANDOFF_IOCTL, BIG_ENDIAN);
71 u32 len_fpga = socfpga_get_handoff_size((void *)SOC64_HANDOFF_FPGA, BIG_ENDIAN);
72 u32 len_delay = socfpga_get_handoff_size((void *)SOC64_HANDOFF_DELAY, BIG_ENDIAN);
73
74 len = (len_mux > len_ioctl) ? len_mux : len_ioctl;
75 len = (len > len_fpga) ? len : len_fpga;
76 len = (len > len_delay) ? len : len_delay;
77
78 u32 handoff_table[len];
79
80 /* setup the pin sel */
81 len = (len_mux < SOC64_HANDOFF_MUX_LEN) ? len_mux : SOC64_HANDOFF_MUX_LEN;
82 socfpga_handoff_read((void *)SOC64_HANDOFF_MUX, handoff_table, len, BIG_ENDIAN);
83 for (i = 0; i < len; i = i + 2) {
84 writel(handoff_table[i + 1],
85 handoff_table[i] +
86 (u8 *)socfpga_get_sysmgr_addr() +
87 SYSMGR_SOC64_PINSEL0);
88 }
89
90 /* setup the pin ctrl */
91 len = (len_ioctl < SOC64_HANDOFF_IOCTL_LEN) ? len_ioctl : SOC64_HANDOFF_IOCTL_LEN;
92 socfpga_handoff_read((void *)SOC64_HANDOFF_IOCTL, handoff_table, len, BIG_ENDIAN);
93 for (i = 0; i < len; i = i + 2) {
94 writel(handoff_table[i + 1],
95 handoff_table[i] +
96 (u8 *)socfpga_get_sysmgr_addr() +
97 SYSMGR_SOC64_IOCTRL0);
98 }
99
100 /* setup the fpga use */
101 len = (len_fpga < SOC64_HANDOFF_FPGA_LEN) ? len_fpga : SOC64_HANDOFF_FPGA_LEN;
102 socfpga_handoff_read((void *)SOC64_HANDOFF_FPGA, handoff_table, len, BIG_ENDIAN);
103 for (i = 0; i < len; i = i + 2) {
104 writel(handoff_table[i + 1],
105 handoff_table[i] +
106 (u8 *)socfpga_get_sysmgr_addr() +
107 SYSMGR_SOC64_EMAC0_USEFPGA);
108 }
109
110 /* setup the IO delay */
111 len = (len_delay < SOC64_HANDOFF_DELAY_LEN) ? len_delay : SOC64_HANDOFF_DELAY_LEN;
112 socfpga_handoff_read((void *)SOC64_HANDOFF_DELAY, handoff_table, len, BIG_ENDIAN);
113 for (i = 0; i < len; i = i + 2) {
114 writel(handoff_table[i + 1],
115 handoff_table[i] +
116 (u8 *)socfpga_get_sysmgr_addr() +
117 SYSMGR_SOC64_IODELAY0);
118 }
119 }
120