arm: socfpga: fpga: Add SoCFPGA FPGA programming interface
[oweals/u-boot.git] / arch / arm / cpu / armv7 / socfpga / misc.c
1 /*
2  *  Copyright (C) 2012 Altera Corporation <www.altera.com>
3  *
4  * SPDX-License-Identifier:     GPL-2.0+
5  */
6
7 #include <common.h>
8 #include <asm/io.h>
9 #include <altera.h>
10 #include <miiphy.h>
11 #include <netdev.h>
12 #include <asm/arch/reset_manager.h>
13 #include <asm/arch/system_manager.h>
14 #include <asm/arch/dwmmc.h>
15
16 DECLARE_GLOBAL_DATA_PTR;
17
18 static struct socfpga_system_manager *sysmgr_regs =
19         (struct socfpga_system_manager *)SOCFPGA_SYSMGR_ADDRESS;
20
21 int dram_init(void)
22 {
23         gd->ram_size = get_ram_size((long *)PHYS_SDRAM_1, PHYS_SDRAM_1_SIZE);
24         return 0;
25 }
26
27 /*
28  * DesignWare Ethernet initialization
29  */
30 #ifdef CONFIG_DESIGNWARE_ETH
31 int cpu_eth_init(bd_t *bis)
32 {
33 #if CONFIG_EMAC_BASE == SOCFPGA_EMAC0_ADDRESS
34         const int physhift = SYSMGR_EMACGRP_CTRL_PHYSEL0_LSB;
35 #elif CONFIG_EMAC_BASE == SOCFPGA_EMAC1_ADDRESS
36         const int physhift = SYSMGR_EMACGRP_CTRL_PHYSEL1_LSB;
37 #else
38 #error "Incorrect CONFIG_EMAC_BASE value!"
39 #endif
40
41         /* Initialize EMAC. This needs to be done at least once per boot. */
42
43         /*
44          * Putting the EMAC controller to reset when configuring the PHY
45          * interface select at System Manager
46          */
47         socfpga_emac_reset(1);
48
49         /* Clearing emac0 PHY interface select to 0 */
50         clrbits_le32(&sysmgr_regs->emacgrp_ctrl,
51                      SYSMGR_EMACGRP_CTRL_PHYSEL_MASK << physhift);
52
53         /* configure to PHY interface select choosed */
54         setbits_le32(&sysmgr_regs->emacgrp_ctrl,
55                      SYSMGR_EMACGRP_CTRL_PHYSEL_ENUM_RGMII << physhift);
56
57         /* Release the EMAC controller from reset */
58         socfpga_emac_reset(0);
59
60         /* initialize and register the emac */
61         return designware_initialize(CONFIG_EMAC_BASE,
62                                      CONFIG_PHY_INTERFACE_MODE);
63 }
64 #endif
65
66 #ifdef CONFIG_DWMMC
67 /*
68  * Initializes MMC controllers.
69  * to override, implement board_mmc_init()
70  */
71 int cpu_mmc_init(bd_t *bis)
72 {
73         return socfpga_dwmmc_init(SOCFPGA_SDMMC_ADDRESS,
74                                   CONFIG_HPS_SDMMC_BUSWIDTH, 0);
75 }
76 #endif
77
78 #if defined(CONFIG_DISPLAY_CPUINFO)
79 /*
80  * Print CPU information
81  */
82 int print_cpuinfo(void)
83 {
84         puts("CPU:   Altera SoCFPGA Platform\n");
85         return 0;
86 }
87 #endif
88
89 #if defined(CONFIG_SYS_CONSOLE_IS_IN_ENV) && \
90 defined(CONFIG_SYS_CONSOLE_OVERWRITE_ROUTINE)
91 int overwrite_console(void)
92 {
93         return 0;
94 }
95 #endif
96
97 #ifdef CONFIG_FPGA
98 /*
99  * FPGA programming support for SoC FPGA Cyclone V
100  */
101 static Altera_desc altera_fpga[] = {
102         {
103                 /* Family */
104                 Altera_SoCFPGA,
105                 /* Interface type */
106                 fast_passive_parallel,
107                 /* No limitation as additional data will be ignored */
108                 -1,
109                 /* No device function table */
110                 NULL,
111                 /* Base interface address specified in driver */
112                 NULL,
113                 /* No cookie implementation */
114                 0
115         },
116 };
117
118 /* add device descriptor to FPGA device table */
119 static void socfpga_fpga_add(void)
120 {
121         int i;
122         fpga_init();
123         for (i = 0; i < ARRAY_SIZE(altera_fpga); i++)
124                 fpga_add(fpga_altera, &altera_fpga[i]);
125 }
126 #else
127 static inline void socfpga_fpga_add(void) {}
128 #endif
129
130 int arch_cpu_init(void)
131 {
132         /*
133          * If the HW watchdog is NOT enabled, make sure it is not running,
134          * for example because it was enabled in the preloader. This might
135          * trigger a watchdog-triggered reboot of Linux kernel later.
136          */
137 #ifndef CONFIG_HW_WATCHDOG
138         socfpga_watchdog_reset();
139 #endif
140         return 0;
141 }
142
143 int misc_init_r(void)
144 {
145         /* Add device descriptor to FPGA device table */
146         socfpga_fpga_add();
147         return 0;
148 }