2 * Copyright (C) 2012 Altera Corporation <www.altera.com>
4 * SPDX-License-Identifier: GPL-2.0+
15 #include <asm/arch/reset_manager.h>
16 #include <asm/arch/system_manager.h>
17 #include <asm/arch/dwmmc.h>
18 #include <asm/arch/nic301.h>
19 #include <asm/arch/scu.h>
20 #include <asm/pl310.h>
22 #include <dt-bindings/reset/altr,rst-mgr.h>
24 DECLARE_GLOBAL_DATA_PTR;
26 static struct pl310_regs *const pl310 =
27 (struct pl310_regs *)CONFIG_SYS_PL310_BASE;
28 static struct socfpga_system_manager *sysmgr_regs =
29 (struct socfpga_system_manager *)SOCFPGA_SYSMGR_ADDRESS;
30 static struct socfpga_reset_manager *reset_manager_base =
31 (struct socfpga_reset_manager *)SOCFPGA_RSTMGR_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;
39 gd->ram_size = get_ram_size((long *)PHYS_SDRAM_1, PHYS_SDRAM_1_SIZE);
43 void enable_caches(void)
45 #ifndef CONFIG_SYS_ICACHE_OFF
48 #ifndef CONFIG_SYS_DCACHE_OFF
54 * DesignWare Ethernet initialization
56 #ifdef CONFIG_ETH_DESIGNWARE
57 static void dwmac_deassert_reset(const unsigned int of_reset_id)
61 if (of_reset_id == EMAC0_RESET) {
62 physhift = SYSMGR_EMACGRP_CTRL_PHYSEL0_LSB;
63 reset = SOCFPGA_RESET(EMAC0);
64 } else if (of_reset_id == EMAC1_RESET) {
65 physhift = SYSMGR_EMACGRP_CTRL_PHYSEL1_LSB;
66 reset = SOCFPGA_RESET(EMAC1);
68 printf("GMAC: Invalid reset ID (%i)!\n", of_reset_id);
72 /* Clearing emac0 PHY interface select to 0 */
73 clrbits_le32(&sysmgr_regs->emacgrp_ctrl,
74 SYSMGR_EMACGRP_CTRL_PHYSEL_MASK << physhift);
76 /* configure to PHY interface select choosed */
77 setbits_le32(&sysmgr_regs->emacgrp_ctrl,
78 SYSMGR_EMACGRP_CTRL_PHYSEL_ENUM_RGMII << physhift);
80 /* Release the EMAC controller from reset */
81 socfpga_per_reset(reset, 0);
84 int cpu_eth_init(bd_t *bis)
86 const void *fdt = gd->fdt_blob;
87 struct fdtdec_phandle_args args;
88 int nodes[2]; /* Max. two GMACs */
92 /* Put both GMACs into RESET state. */
93 socfpga_per_reset(SOCFPGA_RESET(EMAC0), 1);
94 socfpga_per_reset(SOCFPGA_RESET(EMAC1), 1);
96 count = fdtdec_find_aliases_for_id(fdt, "ethernet",
97 COMPAT_ALTERA_SOCFPGA_DWMAC,
98 nodes, ARRAY_SIZE(nodes));
99 for (i = 0; i < count; i++) {
104 ret = fdtdec_parse_phandle_with_args(fdt, node, "resets",
105 "#reset-cells", 1, 0,
107 if (ret || (args.args_count != 1)) {
108 debug("GMAC%i: Failed to parse DT 'resets'!\n", i);
112 dwmac_deassert_reset(args.args[0]);
121 * Initializes MMC controllers.
122 * to override, implement board_mmc_init()
124 int cpu_mmc_init(bd_t *bis)
127 * FIXME: Temporarily define CONFIG_HPS_SDMMC_BUSWIDTH to prevent breakage
128 * due to missing patches in u-boot/master . The upcoming patch will
129 * switch this to OF probing, so this whole block will go away.
131 #define CONFIG_HPS_SDMMC_BUSWIDTH 8
132 return socfpga_dwmmc_init(SOCFPGA_SDMMC_ADDRESS,
133 CONFIG_HPS_SDMMC_BUSWIDTH, 0);
141 { "rsvd", "Reserved", },
142 { "fpga", "FPGA (HPS2FPGA Bridge)", },
143 { "nand", "NAND Flash (1.8V)", },
144 { "nand", "NAND Flash (3.0V)", },
145 { "sd", "SD/MMC External Transceiver (1.8V)", },
146 { "sd", "SD/MMC Internal Transceiver (3.0V)", },
147 { "qspi", "QSPI Flash (1.8V)", },
148 { "qspi", "QSPI Flash (3.0V)", },
152 * Print CPU information
154 #if defined(CONFIG_DISPLAY_CPUINFO)
155 int print_cpuinfo(void)
157 const u32 bsel = readl(&sysmgr_regs->bootinfo) & 0x7;
158 puts("CPU: Altera SoCFPGA Platform\n");
159 printf("BOOT: %s\n", bsel_str[bsel].name);
164 #ifdef CONFIG_ARCH_MISC_INIT
165 int arch_misc_init(void)
167 const u32 bsel = readl(&sysmgr_regs->bootinfo) & 0x7;
168 setenv("bootmode", bsel_str[bsel].mode);
173 #if defined(CONFIG_SYS_CONSOLE_IS_IN_ENV) && \
174 defined(CONFIG_SYS_CONSOLE_OVERWRITE_ROUTINE)
175 int overwrite_console(void)
183 * FPGA programming support for SoC FPGA Cyclone V
185 static Altera_desc altera_fpga[] = {
190 fast_passive_parallel,
191 /* No limitation as additional data will be ignored */
193 /* No device function table */
195 /* Base interface address specified in driver */
197 /* No cookie implementation */
202 /* add device descriptor to FPGA device table */
203 static void socfpga_fpga_add(void)
207 for (i = 0; i < ARRAY_SIZE(altera_fpga); i++)
208 fpga_add(fpga_altera, &altera_fpga[i]);
211 static inline void socfpga_fpga_add(void) {}
214 int arch_cpu_init(void)
216 #ifdef CONFIG_HW_WATCHDOG
218 * In case the watchdog is enabled, make sure to (re-)configure it
219 * so that the defined timeout is valid. Otherwise the SPL (Perloader)
220 * timeout value is still active which might too short for Linux
226 * If the HW watchdog is NOT enabled, make sure it is not running,
227 * for example because it was enabled in the preloader. This might
228 * trigger a watchdog-triggered reboot of Linux kernel later.
229 * Toggle watchdog reset, so watchdog in not running state.
231 socfpga_per_reset(SOCFPGA_RESET(L4WD0), 1);
232 socfpga_per_reset(SOCFPGA_RESET(L4WD0), 0);
239 * Convert all NIC-301 AMBA slaves from secure to non-secure
241 static void socfpga_nic301_slave_ns(void)
243 writel(0x1, &nic301_regs->lwhps2fpgaregs);
244 writel(0x1, &nic301_regs->hps2fpgaregs);
245 writel(0x1, &nic301_regs->acp);
246 writel(0x1, &nic301_regs->rom);
247 writel(0x1, &nic301_regs->ocram);
248 writel(0x1, &nic301_regs->sdrdata);
251 static uint32_t iswgrp_handoff[8];
253 int arch_early_init_r(void)
258 * Write magic value into magic register to unlock support for
259 * issuing warm reset. The ancient kernel code expects this
260 * value to be written into the register by the bootloader, so
261 * to support that old code, we write it here instead of in the
262 * reset_cpu() function just before reseting the CPU.
264 writel(0xae9efebc, &sysmgr_regs->romcodegrp_warmramgrp_enable);
266 for (i = 0; i < 8; i++) /* Cache initial SW setting regs */
267 iswgrp_handoff[i] = readl(&sysmgr_regs->iswgrp_handoff[i]);
269 socfpga_bridges_reset(1);
270 socfpga_nic301_slave_ns();
273 * Private components security:
274 * U-Boot : configure private timer, global timer and cpu component
275 * access as non secure for kernel stage (as required by Linux)
277 setbits_le32(&scu_regs->sacr, 0xfff);
279 /* Configure the L2 controller to make SDRAM start at 0 */
280 #ifdef CONFIG_SOCFPGA_VIRTUAL_TARGET
281 writel(0x2, &nic301_regs->remap);
283 writel(0x1, &nic301_regs->remap); /* remap.mpuzero */
284 writel(0x1, &pl310->pl310_addr_filter_start);
287 /* Add device descriptor to FPGA device table */
290 #ifdef CONFIG_DESIGNWARE_SPI
291 /* Get Designware SPI controller out of reset */
292 socfpga_per_reset(SOCFPGA_RESET(SPIM0), 0);
293 socfpga_per_reset(SOCFPGA_RESET(SPIM1), 0);
299 static void socfpga_sdram_apply_static_cfg(void)
301 const uint32_t staticcfg = SOCFPGA_SDR_ADDRESS + 0x505c;
302 const uint32_t applymask = 0x8;
303 uint32_t val = readl(staticcfg) | applymask;
306 * SDRAM staticcfg register specific:
307 * When applying the register setting, the CPU must not access
308 * SDRAM. Luckily for us, we can abuse i-cache here to help us
309 * circumvent the SDRAM access issue. The idea is to make sure
310 * that the code is in one full i-cache line by branching past
311 * it and back. Once it is in the i-cache, we execute the core
312 * of the code and apply the register settings.
314 * The code below uses 7 instructions, while the Cortex-A9 has
315 * 32-byte cachelines, thus the limit is 8 instructions total.
326 : : "r"(val), "r"(staticcfg) : "memory", "cc");
329 int do_bridge(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
332 return CMD_RET_USAGE;
337 case 'e': /* Enable */
338 writel(iswgrp_handoff[2], &sysmgr_regs->fpgaintfgrp_module);
339 socfpga_sdram_apply_static_cfg();
340 writel(iswgrp_handoff[3], SOCFPGA_SDR_ADDRESS + 0x5080);
341 writel(iswgrp_handoff[0], &reset_manager_base->brg_mod_reset);
342 writel(iswgrp_handoff[1], &nic301_regs->remap);
344 case 'd': /* Disable */
345 writel(0, &sysmgr_regs->fpgaintfgrp_module);
346 writel(0, SOCFPGA_SDR_ADDRESS + 0x5080);
347 socfpga_sdram_apply_static_cfg();
348 writel(0, &reset_manager_base->brg_mod_reset);
349 writel(1, &nic301_regs->remap);
352 return CMD_RET_USAGE;
359 bridge, 2, 1, do_bridge,
360 "SoCFPGA HPS FPGA bridge control",
361 "enable - Enable HPS-to-FPGA, FPGA-to-HPS, LWHPS-to-FPGA bridges\n"
362 "bridge disable - Enable HPS-to-FPGA, FPGA-to-HPS, LWHPS-to-FPGA bridges\n"