Merge branch 'master' of git://git.denx.de/u-boot-socfpga
[oweals/u-boot.git] / arch / arm / mach-socfpga / spl_a10.c
1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3  *  Copyright (C) 2012 Altera Corporation <www.altera.com>
4  */
5
6 #include <common.h>
7 #include <asm/io.h>
8 #include <asm/pl310.h>
9 #include <asm/u-boot.h>
10 #include <asm/utils.h>
11 #include <image.h>
12 #include <asm/arch/reset_manager.h>
13 #include <spl.h>
14 #include <asm/arch/system_manager.h>
15 #include <asm/arch/freeze_controller.h>
16 #include <asm/arch/clock_manager.h>
17 #include <asm/arch/scan_manager.h>
18 #include <asm/arch/sdram.h>
19 #include <asm/arch/scu.h>
20 #include <asm/arch/nic301.h>
21 #include <asm/sections.h>
22 #include <fdtdec.h>
23 #include <watchdog.h>
24 #include <asm/arch/pinmux.h>
25
26 DECLARE_GLOBAL_DATA_PTR;
27
28 static const struct socfpga_system_manager *sysmgr_regs =
29         (struct socfpga_system_manager *)SOCFPGA_SYSMGR_ADDRESS;
30
31 u32 spl_boot_device(void)
32 {
33         const u32 bsel = readl(&sysmgr_regs->bootinfo);
34
35         switch (SYSMGR_GET_BOOTINFO_BSEL(bsel)) {
36         case 0x1:       /* FPGA (HPS2FPGA Bridge) */
37                 return BOOT_DEVICE_RAM;
38         case 0x2:       /* NAND Flash (1.8V) */
39         case 0x3:       /* NAND Flash (3.0V) */
40                 socfpga_per_reset(SOCFPGA_RESET(NAND), 0);
41                 return BOOT_DEVICE_NAND;
42         case 0x4:       /* SD/MMC External Transceiver (1.8V) */
43         case 0x5:       /* SD/MMC Internal Transceiver (3.0V) */
44                 socfpga_per_reset(SOCFPGA_RESET(SDMMC), 0);
45                 socfpga_per_reset(SOCFPGA_RESET(DMA), 0);
46                 return BOOT_DEVICE_MMC1;
47         case 0x6:       /* QSPI Flash (1.8V) */
48         case 0x7:       /* QSPI Flash (3.0V) */
49                 socfpga_per_reset(SOCFPGA_RESET(QSPI), 0);
50                 return BOOT_DEVICE_SPI;
51         default:
52                 printf("Invalid boot device (bsel=%08x)!\n", bsel);
53                 hang();
54         }
55 }
56
57 #ifdef CONFIG_SPL_MMC_SUPPORT
58 u32 spl_boot_mode(const u32 boot_device)
59 {
60 #if defined(CONFIG_SPL_FAT_SUPPORT) || defined(CONFIG_SPL_EXT_SUPPORT)
61         return MMCSD_MODE_FS;
62 #else
63         return MMCSD_MODE_RAW;
64 #endif
65 }
66 #endif
67
68 void spl_board_init(void)
69 {
70         /* configuring the clock based on handoff */
71         cm_basic_init(gd->fdt_blob);
72         WATCHDOG_RESET();
73
74         config_dedicated_pins(gd->fdt_blob);
75         WATCHDOG_RESET();
76
77         /* Release UART from reset */
78         socfpga_reset_uart(0);
79
80         /* enable console uart printing */
81         preloader_console_init();
82 }
83
84 void board_init_f(ulong dummy)
85 {
86         /*
87          * Configure Clock Manager to use intosc clock instead external osc to
88          * ensure success watchdog operation. We do it as early as possible.
89          */
90         cm_use_intosc();
91
92         socfpga_watchdog_disable();
93
94         arch_early_init_r();
95
96 #ifdef CONFIG_HW_WATCHDOG
97         /* release osc1 watchdog timer 0 from reset */
98         socfpga_reset_deassert_osc1wd0();
99
100         /* reconfigure and enable the watchdog */
101         hw_watchdog_init();
102         WATCHDOG_RESET();
103 #endif /* CONFIG_HW_WATCHDOG */
104 }