xref: /openbmc/u-boot/arch/arm/mach-socfpga/board.c (revision 95963679)
1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3  * Altera SoCFPGA common board code
4  *
5  * Copyright (C) 2015 Marek Vasut <marex@denx.de>
6  */
7 
8 #include <common.h>
9 #include <errno.h>
10 #include <fdtdec.h>
11 #include <asm/arch/reset_manager.h>
12 #include <asm/arch/clock_manager.h>
13 #include <asm/arch/misc.h>
14 #include <asm/io.h>
15 
16 #include <usb.h>
17 #include <usb/dwc2_udc.h>
18 
19 DECLARE_GLOBAL_DATA_PTR;
20 
21 void s_init(void) {
22 #ifndef CONFIG_ARM64
23 	/*
24 	 * Preconfigure ACTLR, make sure Write Full Line of Zeroes is disabled.
25 	 * This is optional on CycloneV / ArriaV.
26 	 * This is mandatory on Arria10, otherwise Linux refuses to boot.
27 	 */
28 	asm volatile(
29 		"mcr p15, 0, %0, c1, c0, 1\n"
30 		"isb\n"
31 		"dsb\n"
32 	::"r"(0x0));
33 #endif
34 }
35 
36 /*
37  * Miscellaneous platform dependent initialisations
38  */
39 int board_init(void)
40 {
41 	/* Address of boot parameters for ATAG (if ATAG is used) */
42 	gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE + 0x100;
43 
44 #if defined(CONFIG_TARGET_SOCFPGA_ARRIA10)
45 	/* configuring the clock based on handoff */
46 	cm_basic_init(gd->fdt_blob);
47 
48 	/* Add device descriptor to FPGA device table */
49 	socfpga_fpga_add();
50 #endif
51 
52 	return 0;
53 }
54 
55 int dram_init_banksize(void)
56 {
57 	fdtdec_setup_memory_banksize();
58 
59 	return 0;
60 }
61 
62 #ifdef CONFIG_USB_GADGET
63 struct dwc2_plat_otg_data socfpga_otg_data = {
64 	.usb_gusbcfg	= 0x1417,
65 };
66 
67 int board_usb_init(int index, enum usb_init_type init)
68 {
69 	int node[2], count;
70 	fdt_addr_t addr;
71 
72 	count = fdtdec_find_aliases_for_id(gd->fdt_blob, "udc",
73 					   COMPAT_ALTERA_SOCFPGA_DWC2USB,
74 					   node, 2);
75 	if (count <= 0)	/* No controller found. */
76 		return 0;
77 
78 	addr = fdtdec_get_addr(gd->fdt_blob, node[0], "reg");
79 	if (addr == FDT_ADDR_T_NONE) {
80 		printf("UDC Controller has no 'reg' property!\n");
81 		return -EINVAL;
82 	}
83 
84 	/* Patch the address from OF into the controller pdata. */
85 	socfpga_otg_data.regs_otg = addr;
86 
87 	return dwc2_udc_probe(&socfpga_otg_data);
88 }
89 
90 int g_dnl_board_usb_cable_connected(void)
91 {
92 	return 1;
93 }
94 #endif
95