/*
- * Copyright (C) 2012 Altera Corporation <www.altera.com>
+ * Copyright (C) 2012-2017 Altera Corporation <www.altera.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <miiphy.h>
#include <netdev.h>
#include <watchdog.h>
+#include <asm/arch/misc.h>
#include <asm/arch/reset_manager.h>
#include <asm/arch/scan_manager.h>
#include <asm/arch/system_manager.h>
#include <asm/arch/scu.h>
#include <asm/pl310.h>
-#include <dt-bindings/reset/altr,rst-mgr.h>
-
DECLARE_GLOBAL_DATA_PTR;
-static struct pl310_regs *const pl310 =
+static const struct pl310_regs *const pl310 =
(struct pl310_regs *)CONFIG_SYS_PL310_BASE;
-static struct socfpga_system_manager *sysmgr_regs =
- (struct socfpga_system_manager *)SOCFPGA_SYSMGR_ADDRESS;
-static struct socfpga_reset_manager *reset_manager_base =
- (struct socfpga_reset_manager *)SOCFPGA_RSTMGR_ADDRESS;
-static struct nic301_registers *nic301_regs =
- (struct nic301_registers *)SOCFPGA_L3REGS_ADDRESS;
-static struct scu_registers *scu_regs =
- (struct scu_registers *)SOCFPGA_MPUSCU_ADDRESS;
+
+struct bsel bsel_str[] = {
+ { "rsvd", "Reserved", },
+ { "fpga", "FPGA (HPS2FPGA Bridge)", },
+ { "nand", "NAND Flash (1.8V)", },
+ { "nand", "NAND Flash (3.0V)", },
+ { "sd", "SD/MMC External Transceiver (1.8V)", },
+ { "sd", "SD/MMC Internal Transceiver (3.0V)", },
+ { "qspi", "QSPI Flash (1.8V)", },
+ { "qspi", "QSPI Flash (3.0V)", },
+};
int dram_init(void)
{
clrbits_le32(&pl310->pl310_ctrl, L2X0_CTRL_EN);
}
-/*
- * DesignWare Ethernet initialization
- */
-#ifdef CONFIG_ETH_DESIGNWARE
-static void dwmac_deassert_reset(const unsigned int of_reset_id,
- const u32 phymode)
-{
- u32 physhift, reset;
-
- if (of_reset_id == EMAC0_RESET) {
- physhift = SYSMGR_EMACGRP_CTRL_PHYSEL0_LSB;
- reset = SOCFPGA_RESET(EMAC0);
- } else if (of_reset_id == EMAC1_RESET) {
- physhift = SYSMGR_EMACGRP_CTRL_PHYSEL1_LSB;
- reset = SOCFPGA_RESET(EMAC1);
- } else {
- printf("GMAC: Invalid reset ID (%i)!\n", of_reset_id);
- return;
- }
-
- /* Clearing emac0 PHY interface select to 0 */
- clrbits_le32(&sysmgr_regs->emacgrp_ctrl,
- SYSMGR_EMACGRP_CTRL_PHYSEL_MASK << physhift);
-
- /* configure to PHY interface select choosed */
- setbits_le32(&sysmgr_regs->emacgrp_ctrl,
- phymode << physhift);
-
- /* Release the EMAC controller from reset */
- socfpga_per_reset(reset, 0);
-}
-
-static u32 dwmac_phymode_to_modereg(const char *phymode, u32 *modereg)
-{
- if (!phymode)
- return -EINVAL;
-
- if (!strcmp(phymode, "mii") || !strcmp(phymode, "gmii")) {
- *modereg = SYSMGR_EMACGRP_CTRL_PHYSEL_ENUM_GMII_MII;
- return 0;
- }
-
- if (!strcmp(phymode, "rgmii")) {
- *modereg = SYSMGR_EMACGRP_CTRL_PHYSEL_ENUM_RGMII;
- return 0;
- }
-
- if (!strcmp(phymode, "rmii")) {
- *modereg = SYSMGR_EMACGRP_CTRL_PHYSEL_ENUM_RMII;
- return 0;
- }
-
- return -EINVAL;
-}
-
-static int socfpga_eth_reset(void)
-{
- const void *fdt = gd->fdt_blob;
- struct fdtdec_phandle_args args;
- const char *phy_mode;
- u32 phy_modereg;
- int nodes[2]; /* Max. two GMACs */
- int ret, count;
- int i, node;
-
- /* Put both GMACs into RESET state. */
- socfpga_per_reset(SOCFPGA_RESET(EMAC0), 1);
- socfpga_per_reset(SOCFPGA_RESET(EMAC1), 1);
-
- count = fdtdec_find_aliases_for_id(fdt, "ethernet",
- COMPAT_ALTERA_SOCFPGA_DWMAC,
- nodes, ARRAY_SIZE(nodes));
- for (i = 0; i < count; i++) {
- node = nodes[i];
- if (node <= 0)
- continue;
-
- ret = fdtdec_parse_phandle_with_args(fdt, node, "resets",
- "#reset-cells", 1, 0,
- &args);
- if (ret || (args.args_count != 1)) {
- debug("GMAC%i: Failed to parse DT 'resets'!\n", i);
- continue;
- }
-
- phy_mode = fdt_getprop(fdt, node, "phy-mode", NULL);
- ret = dwmac_phymode_to_modereg(phy_mode, &phy_modereg);
- if (ret) {
- debug("GMAC%i: Failed to parse DT 'phy-mode'!\n", i);
- continue;
- }
-
- dwmac_deassert_reset(args.args[0], phy_modereg);
- }
-
- return 0;
-}
-#else
-static int socfpga_eth_reset(void)
-{
- return 0;
-};
-#endif
-
-struct {
- const char *mode;
- const char *name;
-} bsel_str[] = {
- { "rsvd", "Reserved", },
- { "fpga", "FPGA (HPS2FPGA Bridge)", },
- { "nand", "NAND Flash (1.8V)", },
- { "nand", "NAND Flash (3.0V)", },
- { "sd", "SD/MMC External Transceiver (1.8V)", },
- { "sd", "SD/MMC Internal Transceiver (3.0V)", },
- { "qspi", "QSPI Flash (1.8V)", },
- { "qspi", "QSPI Flash (3.0V)", },
-};
-
-static const struct {
- const u16 pn;
- const char *name;
- const char *var;
-} const socfpga_fpga_model[] = {
- /* Cyclone V E */
- { 0x2b15, "Cyclone V, E/A2", "cv_e_a2" },
- { 0x2b05, "Cyclone V, E/A4", "cv_e_a4" },
- { 0x2b22, "Cyclone V, E/A5", "cv_e_a5" },
- { 0x2b13, "Cyclone V, E/A7", "cv_e_a7" },
- { 0x2b14, "Cyclone V, E/A9", "cv_e_a9" },
- /* Cyclone V GX/GT */
- { 0x2b01, "Cyclone V, GX/C3", "cv_gx_c3" },
- { 0x2b12, "Cyclone V, GX/C4", "cv_gx_c4" },
- { 0x2b02, "Cyclone V, GX/C5 or GT/D5", "cv_gx_c5" },
- { 0x2b03, "Cyclone V, GX/C7 or GT/D7", "cv_gx_c7" },
- { 0x2b04, "Cyclone V, GX/C9 or GT/D9", "cv_gx_c9" },
- /* Cyclone V SE/SX/ST */
- { 0x2d11, "Cyclone V, SE/A2 or SX/C2", "cv_se_a2" },
- { 0x2d01, "Cyclone V, SE/A4 or SX/C4", "cv_se_a4" },
- { 0x2d12, "Cyclone V, SE/A5 or SX/C5 or ST/D5", "cv_se_a5" },
- { 0x2d02, "Cyclone V, SE/A6 or SX/C6 or ST/D6", "cv_se_a6" },
- /* Arria V */
- { 0x2d03, "Arria V, D5", "av_d5" },
-};
-
-static int socfpga_fpga_id(const bool print_id)
-{
- const u32 altera_mi = 0x6e;
- const u32 id = scan_mgr_get_fpga_id();
-
- const u32 lsb = id & 0x00000001;
- const u32 mi = (id >> 1) & 0x000007ff;
- const u32 pn = (id >> 12) & 0x0000ffff;
- const u32 version = (id >> 28) & 0x0000000f;
- int i;
-
- if ((mi != altera_mi) || (lsb != 1)) {
- printf("FPGA: Not Altera chip ID\n");
- return -EINVAL;
- }
-
- for (i = 0; i < ARRAY_SIZE(socfpga_fpga_model); i++)
- if (pn == socfpga_fpga_model[i].pn)
- break;
-
- if (i == ARRAY_SIZE(socfpga_fpga_model)) {
- printf("FPGA: Unknown Altera chip, ID 0x%08x\n", id);
- return -EINVAL;
- }
-
- if (print_id)
- printf("FPGA: Altera %s, version 0x%01x\n",
- socfpga_fpga_model[i].name, version);
- return i;
-}
-
-/*
- * Print CPU information
- */
-#if defined(CONFIG_DISPLAY_CPUINFO)
-int print_cpuinfo(void)
-{
- const u32 bsel = readl(&sysmgr_regs->bootinfo) & 0x7;
- puts("CPU: Altera SoCFPGA Platform\n");
- socfpga_fpga_id(1);
- printf("BOOT: %s\n", bsel_str[bsel].name);
- return 0;
-}
-#endif
-
-#ifdef CONFIG_ARCH_MISC_INIT
-int arch_misc_init(void)
-{
- const u32 bsel = readl(&sysmgr_regs->bootinfo) & 0x7;
- const int fpga_id = socfpga_fpga_id(0);
- setenv("bootmode", bsel_str[bsel].mode);
- if (fpga_id >= 0)
- setenv("fpgatype", socfpga_fpga_model[fpga_id].var);
- return socfpga_eth_reset();
-}
-#endif
-
#if defined(CONFIG_SYS_CONSOLE_IS_IN_ENV) && \
defined(CONFIG_SYS_CONSOLE_OVERWRITE_ROUTINE)
int overwrite_console(void)
};
/* add device descriptor to FPGA device table */
-static void socfpga_fpga_add(void)
+void socfpga_fpga_add(void)
{
int i;
fpga_init();
for (i = 0; i < ARRAY_SIZE(altera_fpga); i++)
fpga_add(fpga_altera, &altera_fpga[i]);
}
-#else
-static inline void socfpga_fpga_add(void) {}
#endif
int arch_cpu_init(void)
return 0;
}
-
-/*
- * Convert all NIC-301 AMBA slaves from secure to non-secure
- */
-static void socfpga_nic301_slave_ns(void)
-{
- writel(0x1, &nic301_regs->lwhps2fpgaregs);
- writel(0x1, &nic301_regs->hps2fpgaregs);
- writel(0x1, &nic301_regs->acp);
- writel(0x1, &nic301_regs->rom);
- writel(0x1, &nic301_regs->ocram);
- writel(0x1, &nic301_regs->sdrdata);
-}
-
-static uint32_t iswgrp_handoff[8];
-
-int arch_early_init_r(void)
-{
- int i;
-
- /*
- * Write magic value into magic register to unlock support for
- * issuing warm reset. The ancient kernel code expects this
- * value to be written into the register by the bootloader, so
- * to support that old code, we write it here instead of in the
- * reset_cpu() function just before resetting the CPU.
- */
- writel(0xae9efebc, &sysmgr_regs->romcodegrp_warmramgrp_enable);
-
- for (i = 0; i < 8; i++) /* Cache initial SW setting regs */
- iswgrp_handoff[i] = readl(&sysmgr_regs->iswgrp_handoff[i]);
-
- socfpga_bridges_reset(1);
- socfpga_nic301_slave_ns();
-
- /*
- * Private components security:
- * U-Boot : configure private timer, global timer and cpu component
- * access as non secure for kernel stage (as required by Linux)
- */
- setbits_le32(&scu_regs->sacr, 0xfff);
-
- /* Configure the L2 controller to make SDRAM start at 0 */
-#ifdef CONFIG_SOCFPGA_VIRTUAL_TARGET
- writel(0x2, &nic301_regs->remap);
-#else
- writel(0x1, &nic301_regs->remap); /* remap.mpuzero */
- writel(0x1, &pl310->pl310_addr_filter_start);
-#endif
-
- /* Add device descriptor to FPGA device table */
- socfpga_fpga_add();
-
-#ifdef CONFIG_DESIGNWARE_SPI
- /* Get Designware SPI controller out of reset */
- socfpga_per_reset(SOCFPGA_RESET(SPIM0), 0);
- socfpga_per_reset(SOCFPGA_RESET(SPIM1), 0);
-#endif
-
-#ifdef CONFIG_NAND_DENALI
- socfpga_per_reset(SOCFPGA_RESET(NAND), 0);
-#endif
-
- return 0;
-}
-
-static void socfpga_sdram_apply_static_cfg(void)
-{
- const uint32_t staticcfg = SOCFPGA_SDR_ADDRESS + 0x505c;
- const uint32_t applymask = 0x8;
- uint32_t val = readl(staticcfg) | applymask;
-
- /*
- * SDRAM staticcfg register specific:
- * When applying the register setting, the CPU must not access
- * SDRAM. Luckily for us, we can abuse i-cache here to help us
- * circumvent the SDRAM access issue. The idea is to make sure
- * that the code is in one full i-cache line by branching past
- * it and back. Once it is in the i-cache, we execute the core
- * of the code and apply the register settings.
- *
- * The code below uses 7 instructions, while the Cortex-A9 has
- * 32-byte cachelines, thus the limit is 8 instructions total.
- */
- asm volatile(
- ".align 5 \n"
- " b 2f \n"
- "1: str %0, [%1] \n"
- " dsb \n"
- " isb \n"
- " b 3f \n"
- "2: b 1b \n"
- "3: nop \n"
- : : "r"(val), "r"(staticcfg) : "memory", "cc");
-}
-
-int do_bridge(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
-{
- if (argc != 2)
- return CMD_RET_USAGE;
-
- argv++;
-
- switch (*argv[0]) {
- case 'e': /* Enable */
- writel(iswgrp_handoff[2], &sysmgr_regs->fpgaintfgrp_module);
- socfpga_sdram_apply_static_cfg();
- writel(iswgrp_handoff[3], SOCFPGA_SDR_ADDRESS + 0x5080);
- writel(iswgrp_handoff[0], &reset_manager_base->brg_mod_reset);
- writel(iswgrp_handoff[1], &nic301_regs->remap);
- break;
- case 'd': /* Disable */
- writel(0, &sysmgr_regs->fpgaintfgrp_module);
- writel(0, SOCFPGA_SDR_ADDRESS + 0x5080);
- socfpga_sdram_apply_static_cfg();
- writel(0, &reset_manager_base->brg_mod_reset);
- writel(1, &nic301_regs->remap);
- break;
- default:
- return CMD_RET_USAGE;
- }
-
- return 0;
-}
-
-U_BOOT_CMD(
- bridge, 2, 1, do_bridge,
- "SoCFPGA HPS FPGA bridge control",
- "enable - Enable HPS-to-FPGA, FPGA-to-HPS, LWHPS-to-FPGA bridges\n"
- "bridge disable - Enable HPS-to-FPGA, FPGA-to-HPS, LWHPS-to-FPGA bridges\n"
- ""
-);
--- /dev/null
+/*
+ * Copyright (C) 2012-2017 Altera Corporation <www.altera.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <asm/io.h>
+#include <errno.h>
+#include <fdtdec.h>
+#include <libfdt.h>
+#include <altera.h>
+#include <miiphy.h>
+#include <netdev.h>
+#include <watchdog.h>
+#include <asm/arch/misc.h>
+#include <asm/arch/reset_manager.h>
+#include <asm/arch/scan_manager.h>
+#include <asm/arch/sdram.h>
+#include <asm/arch/system_manager.h>
+#include <asm/arch/nic301.h>
+#include <asm/arch/scu.h>
+#include <asm/pl310.h>
+
+#include <dt-bindings/reset/altr,rst-mgr.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+static struct pl310_regs *const pl310 =
+ (struct pl310_regs *)CONFIG_SYS_PL310_BASE;
+static struct socfpga_system_manager *sysmgr_regs =
+ (struct socfpga_system_manager *)SOCFPGA_SYSMGR_ADDRESS;
+static struct socfpga_reset_manager *reset_manager_base =
+ (struct socfpga_reset_manager *)SOCFPGA_RSTMGR_ADDRESS;
+static struct nic301_registers *nic301_regs =
+ (struct nic301_registers *)SOCFPGA_L3REGS_ADDRESS;
+static struct scu_registers *scu_regs =
+ (struct scu_registers *)SOCFPGA_MPUSCU_ADDRESS;
+static struct socfpga_sdr_ctrl *sdr_ctrl =
+ (struct socfpga_sdr_ctrl *)SDR_CTRLGRP_ADDRESS;
+
+/*
+ * DesignWare Ethernet initialization
+ */
+#ifdef CONFIG_ETH_DESIGNWARE
+void dwmac_deassert_reset(const unsigned int of_reset_id,
+ const u32 phymode)
+{
+ u32 physhift, reset;
+
+ if (of_reset_id == EMAC0_RESET) {
+ physhift = SYSMGR_EMACGRP_CTRL_PHYSEL0_LSB;
+ reset = SOCFPGA_RESET(EMAC0);
+ } else if (of_reset_id == EMAC1_RESET) {
+ physhift = SYSMGR_EMACGRP_CTRL_PHYSEL1_LSB;
+ reset = SOCFPGA_RESET(EMAC1);
+ } else {
+ printf("GMAC: Invalid reset ID (%i)!\n", of_reset_id);
+ return;
+ }
+
+ /* configure to PHY interface select choosed */
+ clrsetbits_le32(&sysmgr_regs->emacgrp_ctrl,
+ SYSMGR_EMACGRP_CTRL_PHYSEL_MASK << physhift,
+ phymode << physhift);
+
+ /* Release the EMAC controller from reset */
+ socfpga_per_reset(reset, 0);
+}
+
+static u32 dwmac_phymode_to_modereg(const char *phymode, u32 *modereg)
+{
+ if (!phymode)
+ return -EINVAL;
+
+ if (!strcmp(phymode, "mii") || !strcmp(phymode, "gmii")) {
+ *modereg = SYSMGR_EMACGRP_CTRL_PHYSEL_ENUM_GMII_MII;
+ return 0;
+ }
+
+ if (!strcmp(phymode, "rgmii")) {
+ *modereg = SYSMGR_EMACGRP_CTRL_PHYSEL_ENUM_RGMII;
+ return 0;
+ }
+
+ if (!strcmp(phymode, "rmii")) {
+ *modereg = SYSMGR_EMACGRP_CTRL_PHYSEL_ENUM_RMII;
+ return 0;
+ }
+
+ return -EINVAL;
+}
+
+static int socfpga_eth_reset(void)
+{
+ const void *fdt = gd->fdt_blob;
+ struct fdtdec_phandle_args args;
+ const char *phy_mode;
+ u32 phy_modereg;
+ int nodes[2]; /* Max. two GMACs */
+ int ret, count;
+ int i, node;
+
+ /* Put both GMACs into RESET state. */
+ socfpga_per_reset(SOCFPGA_RESET(EMAC0), 1);
+ socfpga_per_reset(SOCFPGA_RESET(EMAC1), 1);
+
+ count = fdtdec_find_aliases_for_id(fdt, "ethernet",
+ COMPAT_ALTERA_SOCFPGA_DWMAC,
+ nodes, ARRAY_SIZE(nodes));
+ for (i = 0; i < count; i++) {
+ node = nodes[i];
+ if (node <= 0)
+ continue;
+
+ ret = fdtdec_parse_phandle_with_args(fdt, node, "resets",
+ "#reset-cells", 1, 0,
+ &args);
+ if (ret || (args.args_count != 1)) {
+ debug("GMAC%i: Failed to parse DT 'resets'!\n", i);
+ continue;
+ }
+
+ phy_mode = fdt_getprop(fdt, node, "phy-mode", NULL);
+ ret = dwmac_phymode_to_modereg(phy_mode, &phy_modereg);
+ if (ret) {
+ debug("GMAC%i: Failed to parse DT 'phy-mode'!\n", i);
+ continue;
+ }
+
+ dwmac_deassert_reset(args.args[0], phy_modereg);
+ }
+
+ return 0;
+}
+#else
+static int socfpga_eth_reset(void)
+{
+ return 0;
+};
+#endif
+
+static const struct {
+ const u16 pn;
+ const char *name;
+ const char *var;
+} const socfpga_fpga_model[] = {
+ /* Cyclone V E */
+ { 0x2b15, "Cyclone V, E/A2", "cv_e_a2" },
+ { 0x2b05, "Cyclone V, E/A4", "cv_e_a4" },
+ { 0x2b22, "Cyclone V, E/A5", "cv_e_a5" },
+ { 0x2b13, "Cyclone V, E/A7", "cv_e_a7" },
+ { 0x2b14, "Cyclone V, E/A9", "cv_e_a9" },
+ /* Cyclone V GX/GT */
+ { 0x2b01, "Cyclone V, GX/C3", "cv_gx_c3" },
+ { 0x2b12, "Cyclone V, GX/C4", "cv_gx_c4" },
+ { 0x2b02, "Cyclone V, GX/C5 or GT/D5", "cv_gx_c5" },
+ { 0x2b03, "Cyclone V, GX/C7 or GT/D7", "cv_gx_c7" },
+ { 0x2b04, "Cyclone V, GX/C9 or GT/D9", "cv_gx_c9" },
+ /* Cyclone V SE/SX/ST */
+ { 0x2d11, "Cyclone V, SE/A2 or SX/C2", "cv_se_a2" },
+ { 0x2d01, "Cyclone V, SE/A4 or SX/C4", "cv_se_a4" },
+ { 0x2d12, "Cyclone V, SE/A5 or SX/C5 or ST/D5", "cv_se_a5" },
+ { 0x2d02, "Cyclone V, SE/A6 or SX/C6 or ST/D6", "cv_se_a6" },
+ /* Arria V */
+ { 0x2d03, "Arria V, D5", "av_d5" },
+};
+
+static int socfpga_fpga_id(const bool print_id)
+{
+ const u32 altera_mi = 0x6e;
+ const u32 id = scan_mgr_get_fpga_id();
+
+ const u32 lsb = id & 0x00000001;
+ const u32 mi = (id >> 1) & 0x000007ff;
+ const u32 pn = (id >> 12) & 0x0000ffff;
+ const u32 version = (id >> 28) & 0x0000000f;
+ int i;
+
+ if ((mi != altera_mi) || (lsb != 1)) {
+ printf("FPGA: Not Altera chip ID\n");
+ return -EINVAL;
+ }
+
+ for (i = 0; i < ARRAY_SIZE(socfpga_fpga_model); i++)
+ if (pn == socfpga_fpga_model[i].pn)
+ break;
+
+ if (i == ARRAY_SIZE(socfpga_fpga_model)) {
+ printf("FPGA: Unknown Altera chip, ID 0x%08x\n", id);
+ return -EINVAL;
+ }
+
+ if (print_id)
+ printf("FPGA: Altera %s, version 0x%01x\n",
+ socfpga_fpga_model[i].name, version);
+ return i;
+}
+
+/*
+ * Print CPU information
+ */
+#if defined(CONFIG_DISPLAY_CPUINFO)
+int print_cpuinfo(void)
+{
+ const u32 bsel =
+ SYSMGR_GET_BOOTINFO_BSEL(readl(&sysmgr_regs->bootinfo));
+
+ puts("CPU: Altera SoCFPGA Platform\n");
+ socfpga_fpga_id(1);
+
+ printf("BOOT: %s\n", bsel_str[bsel].name);
+ return 0;
+}
+#endif
+
+#ifdef CONFIG_ARCH_MISC_INIT
+int arch_misc_init(void)
+{
+ const u32 bsel = readl(&sysmgr_regs->bootinfo) & 0x7;
+ const int fpga_id = socfpga_fpga_id(0);
+ setenv("bootmode", bsel_str[bsel].mode);
+ if (fpga_id >= 0)
+ setenv("fpgatype", socfpga_fpga_model[fpga_id].var);
+ return socfpga_eth_reset();
+}
+#endif
+
+/*
+ * Convert all NIC-301 AMBA slaves from secure to non-secure
+ */
+static void socfpga_nic301_slave_ns(void)
+{
+ writel(0x1, &nic301_regs->lwhps2fpgaregs);
+ writel(0x1, &nic301_regs->hps2fpgaregs);
+ writel(0x1, &nic301_regs->acp);
+ writel(0x1, &nic301_regs->rom);
+ writel(0x1, &nic301_regs->ocram);
+ writel(0x1, &nic301_regs->sdrdata);
+}
+
+static u32 iswgrp_handoff[8];
+
+int arch_early_init_r(void)
+{
+ int i;
+
+ /*
+ * Write magic value into magic register to unlock support for
+ * issuing warm reset. The ancient kernel code expects this
+ * value to be written into the register by the bootloader, so
+ * to support that old code, we write it here instead of in the
+ * reset_cpu() function just before resetting the CPU.
+ */
+ writel(0xae9efebc, &sysmgr_regs->romcodegrp_warmramgrp_enable);
+
+ for (i = 0; i < 8; i++) /* Cache initial SW setting regs */
+ iswgrp_handoff[i] = readl(&sysmgr_regs->iswgrp_handoff[i]);
+
+ socfpga_bridges_reset(1);
+
+ socfpga_nic301_slave_ns();
+
+ /*
+ * Private components security:
+ * U-Boot : configure private timer, global timer and cpu component
+ * access as non secure for kernel stage (as required by Linux)
+ */
+ setbits_le32(&scu_regs->sacr, 0xfff);
+
+ /* Configure the L2 controller to make SDRAM start at 0 */
+#ifdef CONFIG_SOCFPGA_VIRTUAL_TARGET
+ writel(0x2, &nic301_regs->remap);
+#else
+ writel(0x1, &nic301_regs->remap); /* remap.mpuzero */
+ writel(0x1, &pl310->pl310_addr_filter_start);
+#endif
+
+ /* Add device descriptor to FPGA device table */
+ socfpga_fpga_add();
+
+#ifdef CONFIG_DESIGNWARE_SPI
+ /* Get Designware SPI controller out of reset */
+ socfpga_per_reset(SOCFPGA_RESET(SPIM0), 0);
+ socfpga_per_reset(SOCFPGA_RESET(SPIM1), 0);
+#endif
+
+#ifdef CONFIG_NAND_DENALI
+ socfpga_per_reset(SOCFPGA_RESET(NAND), 0);
+#endif
+
+ return 0;
+}
+
+static void socfpga_sdram_apply_static_cfg(void)
+{
+ const u32 applymask = 0x8;
+ u32 val = readl(&sdr_ctrl->static_cfg) | applymask;
+
+ /*
+ * SDRAM staticcfg register specific:
+ * When applying the register setting, the CPU must not access
+ * SDRAM. Luckily for us, we can abuse i-cache here to help us
+ * circumvent the SDRAM access issue. The idea is to make sure
+ * that the code is in one full i-cache line by branching past
+ * it and back. Once it is in the i-cache, we execute the core
+ * of the code and apply the register settings.
+ *
+ * The code below uses 7 instructions, while the Cortex-A9 has
+ * 32-byte cachelines, thus the limit is 8 instructions total.
+ */
+ asm volatile(
+ ".align 5 \n"
+ " b 2f \n"
+ "1: str %0, [%1] \n"
+ " dsb \n"
+ " isb \n"
+ " b 3f \n"
+ "2: b 1b \n"
+ "3: nop \n"
+ : : "r"(val), "r"(&sdr_ctrl->static_cfg) : "memory", "cc");
+}
+
+int do_bridge(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
+{
+ if (argc != 2)
+ return CMD_RET_USAGE;
+
+ argv++;
+
+ switch (*argv[0]) {
+ case 'e': /* Enable */
+ writel(iswgrp_handoff[2], &sysmgr_regs->fpgaintfgrp_module);
+ socfpga_sdram_apply_static_cfg();
+ writel(iswgrp_handoff[3], &sdr_ctrl->fpgaport_rst);
+ writel(iswgrp_handoff[0], &reset_manager_base->brg_mod_reset);
+ writel(iswgrp_handoff[1], &nic301_regs->remap);
+ break;
+ case 'd': /* Disable */
+ writel(0, &sysmgr_regs->fpgaintfgrp_module);
+ writel(0, &sdr_ctrl->fpgaport_rst);
+ socfpga_sdram_apply_static_cfg();
+ writel(0, &reset_manager_base->brg_mod_reset);
+ writel(1, &nic301_regs->remap);
+ break;
+ default:
+ return CMD_RET_USAGE;
+ }
+
+ return 0;
+}
+
+U_BOOT_CMD(
+ bridge, 2, 1, do_bridge,
+ "SoCFPGA HPS FPGA bridge control",
+ "enable - Enable HPS-to-FPGA, FPGA-to-HPS, LWHPS-to-FPGA bridges\n"
+ "bridge disable - Enable HPS-to-FPGA, FPGA-to-HPS, LWHPS-to-FPGA bridges\n"
+ ""
+);
projects / u-boot / commitdiff