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