arm: socfpga: fix SPL on gen5 after moving to DM serial
[oweals/u-boot.git] / arch / arm / mach-socfpga / spl_gen5.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/misc.h>
18 #include <asm/arch/scan_manager.h>
19 #include <asm/arch/sdram.h>
20 #include <asm/arch/scu.h>
21 #include <asm/arch/nic301.h>
22 #include <asm/sections.h>
23 #include <fdtdec.h>
24 #include <watchdog.h>
25
26 DECLARE_GLOBAL_DATA_PTR;
27
28 static struct pl310_regs *const pl310 =
29         (struct pl310_regs *)CONFIG_SYS_PL310_BASE;
30 static struct scu_registers *scu_regs =
31         (struct scu_registers *)SOCFPGA_MPUSCU_ADDRESS;
32 static struct nic301_registers *nic301_regs =
33         (struct nic301_registers *)SOCFPGA_L3REGS_ADDRESS;
34 static const struct socfpga_system_manager *sysmgr_regs =
35         (struct socfpga_system_manager *)SOCFPGA_SYSMGR_ADDRESS;
36
37 u32 spl_boot_device(void)
38 {
39         const u32 bsel = readl(&sysmgr_regs->bootinfo);
40
41         switch (SYSMGR_GET_BOOTINFO_BSEL(bsel)) {
42         case 0x1:       /* FPGA (HPS2FPGA Bridge) */
43                 return BOOT_DEVICE_RAM;
44         case 0x2:       /* NAND Flash (1.8V) */
45         case 0x3:       /* NAND Flash (3.0V) */
46                 socfpga_per_reset(SOCFPGA_RESET(NAND), 0);
47                 return BOOT_DEVICE_NAND;
48         case 0x4:       /* SD/MMC External Transceiver (1.8V) */
49         case 0x5:       /* SD/MMC Internal Transceiver (3.0V) */
50                 socfpga_per_reset(SOCFPGA_RESET(SDMMC), 0);
51                 socfpga_per_reset(SOCFPGA_RESET(DMA), 0);
52                 return BOOT_DEVICE_MMC1;
53         case 0x6:       /* QSPI Flash (1.8V) */
54         case 0x7:       /* QSPI Flash (3.0V) */
55                 socfpga_per_reset(SOCFPGA_RESET(QSPI), 0);
56                 return BOOT_DEVICE_SPI;
57         default:
58                 printf("Invalid boot device (bsel=%08x)!\n", bsel);
59                 hang();
60         }
61 }
62
63 #ifdef CONFIG_SPL_MMC_SUPPORT
64 u32 spl_boot_mode(const u32 boot_device)
65 {
66 #if defined(CONFIG_SPL_FAT_SUPPORT) || defined(CONFIG_SPL_EXT_SUPPORT)
67         return MMCSD_MODE_FS;
68 #else
69         return MMCSD_MODE_RAW;
70 #endif
71 }
72 #endif
73
74 static void socfpga_nic301_slave_ns(void)
75 {
76         writel(0x1, &nic301_regs->lwhps2fpgaregs);
77         writel(0x1, &nic301_regs->hps2fpgaregs);
78         writel(0x1, &nic301_regs->acp);
79         writel(0x1, &nic301_regs->rom);
80         writel(0x1, &nic301_regs->ocram);
81         writel(0x1, &nic301_regs->sdrdata);
82 }
83
84 void board_init_f(ulong dummy)
85 {
86         const struct cm_config *cm_default_cfg = cm_get_default_config();
87         unsigned long sdram_size;
88         unsigned long reg;
89         int ret;
90
91         /*
92          * First C code to run. Clear fake OCRAM ECC first as SBE
93          * and DBE might triggered during power on
94          */
95         reg = readl(&sysmgr_regs->eccgrp_ocram);
96         if (reg & SYSMGR_ECC_OCRAM_SERR)
97                 writel(SYSMGR_ECC_OCRAM_SERR | SYSMGR_ECC_OCRAM_EN,
98                        &sysmgr_regs->eccgrp_ocram);
99         if (reg & SYSMGR_ECC_OCRAM_DERR)
100                 writel(SYSMGR_ECC_OCRAM_DERR  | SYSMGR_ECC_OCRAM_EN,
101                        &sysmgr_regs->eccgrp_ocram);
102
103         memset(__bss_start, 0, __bss_end - __bss_start);
104
105         socfpga_nic301_slave_ns();
106
107         /* Configure ARM MPU SNSAC register. */
108         setbits_le32(&scu_regs->sacr, 0xfff);
109
110         /* Remap SDRAM to 0x0 */
111         writel(0x1, &nic301_regs->remap);       /* remap.mpuzero */
112         writel(0x1, &pl310->pl310_addr_filter_start);
113
114         debug("Freezing all I/O banks\n");
115         /* freeze all IO banks */
116         sys_mgr_frzctrl_freeze_req();
117
118         /* Put everything into reset but L4WD0. */
119         socfpga_per_reset_all();
120         /* Put FPGA bridges into reset too. */
121         socfpga_bridges_reset(1);
122
123         socfpga_per_reset(SOCFPGA_RESET(SDR), 0);
124         socfpga_per_reset(SOCFPGA_RESET(UART0), 0);
125         socfpga_per_reset(SOCFPGA_RESET(OSC1TIMER0), 0);
126
127         timer_init();
128
129         debug("Reconfigure Clock Manager\n");
130         /* reconfigure the PLLs */
131         if (cm_basic_init(cm_default_cfg))
132                 hang();
133
134         /* Enable bootrom to configure IOs. */
135         sysmgr_config_warmrstcfgio(1);
136
137         /* configure the IOCSR / IO buffer settings */
138         if (scan_mgr_configure_iocsr())
139                 hang();
140
141         sysmgr_config_warmrstcfgio(0);
142
143         /* configure the pin muxing through system manager */
144         sysmgr_config_warmrstcfgio(1);
145         sysmgr_pinmux_init();
146         sysmgr_config_warmrstcfgio(0);
147
148         /* De-assert reset for peripherals and bridges based on handoff */
149         reset_deassert_peripherals_handoff();
150         socfpga_bridges_reset(0);
151
152         debug("Unfreezing/Thaw all I/O banks\n");
153         /* unfreeze / thaw all IO banks */
154         sys_mgr_frzctrl_thaw_req();
155
156         ret = spl_early_init();
157         if (ret) {
158                 debug("spl_early_init() failed: %d\n", ret);
159                 hang();
160         }
161
162         /* enable console uart printing */
163         preloader_console_init();
164
165         if (sdram_mmr_init_full(0xffffffff) != 0) {
166                 puts("SDRAM init failed.\n");
167                 hang();
168         }
169
170         debug("SDRAM: Calibrating PHY\n");
171         /* SDRAM calibration */
172         if (sdram_calibration_full() == 0) {
173                 puts("SDRAM calibration failed.\n");
174                 hang();
175         }
176
177         sdram_size = sdram_calculate_size();
178         debug("SDRAM: %ld MiB\n", sdram_size >> 20);
179
180         /* Sanity check ensure correct SDRAM size specified */
181         if (get_ram_size(0, sdram_size) != sdram_size) {
182                 puts("SDRAM size check failed!\n");
183                 hang();
184         }
185
186         socfpga_bridges_reset(1);
187
188         /* Configure simple malloc base pointer into RAM. */
189         gd->malloc_base = CONFIG_SYS_TEXT_BASE + (1024 * 1024);
190 }