1 // SPDX-License-Identifier: GPL-2.0+
3 * Copyright (C) 2012-2017 Altera Corporation <www.altera.com>
10 #include <linux/libfdt.h>
15 #include <asm/arch/misc.h>
16 #include <asm/arch/reset_manager.h>
17 #include <asm/arch/scan_manager.h>
18 #include <asm/arch/sdram.h>
19 #include <asm/arch/system_manager.h>
20 #include <asm/arch/nic301.h>
21 #include <asm/arch/scu.h>
22 #include <asm/pl310.h>
24 #include <dt-bindings/reset/altr,rst-mgr.h>
26 DECLARE_GLOBAL_DATA_PTR;
28 static struct pl310_regs *const pl310 =
29 (struct pl310_regs *)CONFIG_SYS_PL310_BASE;
30 static struct socfpga_system_manager *sysmgr_regs =
31 (struct socfpga_system_manager *)SOCFPGA_SYSMGR_ADDRESS;
32 static struct nic301_registers *nic301_regs =
33 (struct nic301_registers *)SOCFPGA_L3REGS_ADDRESS;
34 static struct scu_registers *scu_regs =
35 (struct scu_registers *)SOCFPGA_MPUSCU_ADDRESS;
38 * FPGA programming support for SoC FPGA Cyclone V
40 static Altera_desc altera_fpga[] = {
45 fast_passive_parallel,
46 /* No limitation as additional data will be ignored */
48 /* No device function table */
50 /* Base interface address specified in driver */
52 /* No cookie implementation */
61 } socfpga_fpga_model[] = {
63 { 0x2b15, "Cyclone V, E/A2", "cv_e_a2" },
64 { 0x2b05, "Cyclone V, E/A4", "cv_e_a4" },
65 { 0x2b22, "Cyclone V, E/A5", "cv_e_a5" },
66 { 0x2b13, "Cyclone V, E/A7", "cv_e_a7" },
67 { 0x2b14, "Cyclone V, E/A9", "cv_e_a9" },
69 { 0x2b01, "Cyclone V, GX/C3", "cv_gx_c3" },
70 { 0x2b12, "Cyclone V, GX/C4", "cv_gx_c4" },
71 { 0x2b02, "Cyclone V, GX/C5 or GT/D5", "cv_gx_c5" },
72 { 0x2b03, "Cyclone V, GX/C7 or GT/D7", "cv_gx_c7" },
73 { 0x2b04, "Cyclone V, GX/C9 or GT/D9", "cv_gx_c9" },
74 /* Cyclone V SE/SX/ST */
75 { 0x2d11, "Cyclone V, SE/A2 or SX/C2", "cv_se_a2" },
76 { 0x2d01, "Cyclone V, SE/A4 or SX/C4", "cv_se_a4" },
77 { 0x2d12, "Cyclone V, SE/A5 or SX/C5 or ST/D5", "cv_se_a5" },
78 { 0x2d02, "Cyclone V, SE/A6 or SX/C6 or ST/D6", "cv_se_a6" },
80 { 0x2d03, "Arria V, D5", "av_d5" },
83 static int socfpga_fpga_id(const bool print_id)
85 const u32 altera_mi = 0x6e;
86 const u32 id = scan_mgr_get_fpga_id();
88 const u32 lsb = id & 0x00000001;
89 const u32 mi = (id >> 1) & 0x000007ff;
90 const u32 pn = (id >> 12) & 0x0000ffff;
91 const u32 version = (id >> 28) & 0x0000000f;
94 if ((mi != altera_mi) || (lsb != 1)) {
95 printf("FPGA: Not Altera chip ID\n");
99 for (i = 0; i < ARRAY_SIZE(socfpga_fpga_model); i++)
100 if (pn == socfpga_fpga_model[i].pn)
103 if (i == ARRAY_SIZE(socfpga_fpga_model)) {
104 printf("FPGA: Unknown Altera chip, ID 0x%08x\n", id);
109 printf("FPGA: Altera %s, version 0x%01x\n",
110 socfpga_fpga_model[i].name, version);
115 * Print CPU information
117 #if defined(CONFIG_DISPLAY_CPUINFO)
118 int print_cpuinfo(void)
121 SYSMGR_GET_BOOTINFO_BSEL(readl(&sysmgr_regs->bootinfo));
123 puts("CPU: Altera SoCFPGA Platform\n");
126 printf("BOOT: %s\n", bsel_str[bsel].name);
131 #ifdef CONFIG_ARCH_MISC_INIT
132 int arch_misc_init(void)
134 const u32 bsel = readl(&sysmgr_regs->bootinfo) & 0x7;
135 const int fpga_id = socfpga_fpga_id(0);
136 env_set("bootmode", bsel_str[bsel].mode);
138 env_set("fpgatype", socfpga_fpga_model[fpga_id].var);
144 * Convert all NIC-301 AMBA slaves from secure to non-secure
146 static void socfpga_nic301_slave_ns(void)
148 writel(0x1, &nic301_regs->lwhps2fpgaregs);
149 writel(0x1, &nic301_regs->hps2fpgaregs);
150 writel(0x1, &nic301_regs->acp);
151 writel(0x1, &nic301_regs->rom);
152 writel(0x1, &nic301_regs->ocram);
153 writel(0x1, &nic301_regs->sdrdata);
156 void socfpga_sdram_remap_zero(void)
160 socfpga_nic301_slave_ns();
163 * Private components security:
164 * U-Boot : configure private timer, global timer and cpu component
165 * access as non secure for kernel stage (as required by Linux)
167 setbits_le32(&scu_regs->sacr, 0xfff);
169 /* Configure the L2 controller to make SDRAM start at 0 */
170 remap = 0x1; /* remap.mpuzero */
171 /* Keep fpga bridge enabled when running from FPGA onchip RAM */
172 if (socfpga_is_booting_from_fpga())
173 remap |= 0x8; /* remap.hps2fpga */
174 writel(remap, &nic301_regs->remap);
176 writel(0x1, &pl310->pl310_addr_filter_start);
179 static u32 iswgrp_handoff[8];
181 int arch_early_init_r(void)
186 * Write magic value into magic register to unlock support for
187 * issuing warm reset. The ancient kernel code expects this
188 * value to be written into the register by the bootloader, so
189 * to support that old code, we write it here instead of in the
190 * reset_cpu() function just before resetting the CPU.
192 writel(0xae9efebc, &sysmgr_regs->romcodegrp_warmramgrp_enable);
194 for (i = 0; i < 8; i++) /* Cache initial SW setting regs */
195 iswgrp_handoff[i] = readl(&sysmgr_regs->iswgrp_handoff[i]);
197 socfpga_bridges_reset(1);
199 socfpga_sdram_remap_zero();
201 /* Add device descriptor to FPGA device table */
202 socfpga_fpga_add(&altera_fpga[0]);
207 #ifndef CONFIG_SPL_BUILD
208 static struct socfpga_reset_manager *reset_manager_base =
209 (struct socfpga_reset_manager *)SOCFPGA_RSTMGR_ADDRESS;
210 static struct socfpga_sdr_ctrl *sdr_ctrl =
211 (struct socfpga_sdr_ctrl *)SDR_CTRLGRP_ADDRESS;
213 void do_bridge_reset(int enable, unsigned int mask)
218 socfpga_bridges_set_handoff_regs(!(mask & BIT(0)),
221 for (i = 0; i < 2; i++) { /* Reload SW setting cache */
223 readl(&sysmgr_regs->iswgrp_handoff[i]);
226 writel(iswgrp_handoff[2], &sysmgr_regs->fpgaintfgrp_module);
227 writel(iswgrp_handoff[3], &sdr_ctrl->fpgaport_rst);
228 writel(iswgrp_handoff[0], &reset_manager_base->brg_mod_reset);
229 writel(iswgrp_handoff[1], &nic301_regs->remap);
231 writel(0, &sysmgr_regs->fpgaintfgrp_module);
232 writel(0, &sdr_ctrl->fpgaport_rst);
233 writel(0, &reset_manager_base->brg_mod_reset);
234 writel(1, &nic301_regs->remap);