--- /dev/null
+/*
+ * Copyright (C) 2012 Altera Corporation <www.altera.com>
+ * All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef _FPGA_MANAGER_H_
+#define _FPGA_MANAGER_H_
+
+#include <altera.h>
+
+struct socfpga_fpga_manager {
+ /* FPGA Manager Module */
+ u32 stat; /* 0x00 */
+ u32 ctrl;
+ u32 dclkcnt;
+ u32 dclkstat;
+ u32 gpo; /* 0x10 */
+ u32 gpi;
+ u32 misci; /* 0x18 */
+ u32 _pad_0x1c_0x82c[517];
+
+ /* Configuration Monitor (MON) Registers */
+ u32 gpio_inten; /* 0x830 */
+ u32 gpio_intmask;
+ u32 gpio_inttype_level;
+ u32 gpio_int_polarity;
+ u32 gpio_intstatus; /* 0x840 */
+ u32 gpio_raw_intstatus;
+ u32 _pad_0x848;
+ u32 gpio_porta_eoi;
+ u32 gpio_ext_porta; /* 0x850 */
+ u32 _pad_0x854_0x85c[3];
+ u32 gpio_1s_sync; /* 0x860 */
+ u32 _pad_0x864_0x868[2];
+ u32 gpio_ver_id_code;
+ u32 gpio_config_reg2; /* 0x870 */
+ u32 gpio_config_reg1;
+};
+
+#define FPGAMGRREGS_STAT_MODE_MASK 0x7
+#define FPGAMGRREGS_STAT_MSEL_MASK 0xf8
+#define FPGAMGRREGS_STAT_MSEL_LSB 3
+
+#define FPGAMGRREGS_CTRL_CFGWDTH_MASK 0x200
+#define FPGAMGRREGS_CTRL_AXICFGEN_MASK 0x100
+#define FPGAMGRREGS_CTRL_NCONFIGPULL_MASK 0x4
+#define FPGAMGRREGS_CTRL_NCE_MASK 0x2
+#define FPGAMGRREGS_CTRL_EN_MASK 0x1
+#define FPGAMGRREGS_CTRL_CDRATIO_LSB 6
+
+#define FPGAMGRREGS_MON_GPIO_EXT_PORTA_CRC_MASK 0x8
+#define FPGAMGRREGS_MON_GPIO_EXT_PORTA_ID_MASK 0x4
+#define FPGAMGRREGS_MON_GPIO_EXT_PORTA_CD_MASK 0x2
+#define FPGAMGRREGS_MON_GPIO_EXT_PORTA_NS_MASK 0x1
+
+/* FPGA Mode */
+#define FPGAMGRREGS_MODE_FPGAOFF 0x0
+#define FPGAMGRREGS_MODE_RESETPHASE 0x1
+#define FPGAMGRREGS_MODE_CFGPHASE 0x2
+#define FPGAMGRREGS_MODE_INITPHASE 0x3
+#define FPGAMGRREGS_MODE_USERMODE 0x4
+#define FPGAMGRREGS_MODE_UNKNOWN 0x5
+
+/* FPGA CD Ratio Value */
+#define CDRATIO_x1 0x0
+#define CDRATIO_x2 0x1
+#define CDRATIO_x4 0x2
+#define CDRATIO_x8 0x3
+
+/* SoCFPGA support functions */
+int fpgamgr_test_fpga_ready(void);
+int fpgamgr_poll_fpga_ready(void);
+int fpgamgr_get_mode(void);
+
+#endif /* _FPGA_MANAGER_H_ */
--- /dev/null
+/*
+ * Copyright (C) 2012 Altera Corporation <www.altera.com>
+ * All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <common.h>
+#include <asm/io.h>
+#include <asm/errno.h>
+#include <asm/arch/fpga_manager.h>
+#include <asm/arch/reset_manager.h>
+#include <asm/arch/system_manager.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+/* Timeout count */
+#define FPGA_TIMEOUT_CNT 0x1000000
+
+static struct socfpga_fpga_manager *fpgamgr_regs =
+ (struct socfpga_fpga_manager *)SOCFPGA_FPGAMGRREGS_ADDRESS;
+static struct socfpga_system_manager *sysmgr_regs =
+ (struct socfpga_system_manager *)SOCFPGA_SYSMGR_ADDRESS;
+
+/* Set CD ratio */
+static void fpgamgr_set_cd_ratio(unsigned long ratio)
+{
+ clrsetbits_le32(&fpgamgr_regs->ctrl,
+ 0x3 << FPGAMGRREGS_CTRL_CDRATIO_LSB,
+ (ratio & 0x3) << FPGAMGRREGS_CTRL_CDRATIO_LSB);
+}
+
+static int fpgamgr_dclkcnt_set(unsigned long cnt)
+{
+ unsigned long i;
+
+ /* Clear any existing done status */
+ if (readl(&fpgamgr_regs->dclkstat))
+ writel(0x1, &fpgamgr_regs->dclkstat);
+
+ /* Write the dclkcnt */
+ writel(cnt, &fpgamgr_regs->dclkcnt);
+
+ /* Wait till the dclkcnt done */
+ for (i = 0; i < FPGA_TIMEOUT_CNT; i++) {
+ if (!readl(&fpgamgr_regs->dclkstat))
+ continue;
+
+ writel(0x1, &fpgamgr_regs->dclkstat);
+ return 0;
+ }
+
+ return -ETIMEDOUT;
+}
+
+/* Start the FPGA programming by initialize the FPGA Manager */
+static int fpgamgr_program_init(void)
+{
+ unsigned long msel, i;
+
+ /* Get the MSEL value */
+ msel = readl(&fpgamgr_regs->stat);
+ msel &= FPGAMGRREGS_STAT_MSEL_MASK;
+ msel >>= FPGAMGRREGS_STAT_MSEL_LSB;
+
+ /*
+ * Set the cfg width
+ * If MSEL[3] = 1, cfg width = 32 bit
+ */
+ if (msel & 0x8) {
+ setbits_le32(&fpgamgr_regs->ctrl,
+ FPGAMGRREGS_CTRL_CFGWDTH_MASK);
+
+ /* To determine the CD ratio */
+ /* MSEL[1:0] = 0, CD Ratio = 1 */
+ if ((msel & 0x3) == 0x0)
+ fpgamgr_set_cd_ratio(CDRATIO_x1);
+ /* MSEL[1:0] = 1, CD Ratio = 4 */
+ else if ((msel & 0x3) == 0x1)
+ fpgamgr_set_cd_ratio(CDRATIO_x4);
+ /* MSEL[1:0] = 2, CD Ratio = 8 */
+ else if ((msel & 0x3) == 0x2)
+ fpgamgr_set_cd_ratio(CDRATIO_x8);
+
+ } else { /* MSEL[3] = 0 */
+ clrbits_le32(&fpgamgr_regs->ctrl,
+ FPGAMGRREGS_CTRL_CFGWDTH_MASK);
+
+ /* To determine the CD ratio */
+ /* MSEL[1:0] = 0, CD Ratio = 1 */
+ if ((msel & 0x3) == 0x0)
+ fpgamgr_set_cd_ratio(CDRATIO_x1);
+ /* MSEL[1:0] = 1, CD Ratio = 2 */
+ else if ((msel & 0x3) == 0x1)
+ fpgamgr_set_cd_ratio(CDRATIO_x2);
+ /* MSEL[1:0] = 2, CD Ratio = 4 */
+ else if ((msel & 0x3) == 0x2)
+ fpgamgr_set_cd_ratio(CDRATIO_x4);
+ }
+
+ /* To enable FPGA Manager configuration */
+ clrbits_le32(&fpgamgr_regs->ctrl, FPGAMGRREGS_CTRL_NCE_MASK);
+
+ /* To enable FPGA Manager drive over configuration line */
+ setbits_le32(&fpgamgr_regs->ctrl, FPGAMGRREGS_CTRL_EN_MASK);
+
+ /* Put FPGA into reset phase */
+ setbits_le32(&fpgamgr_regs->ctrl, FPGAMGRREGS_CTRL_NCONFIGPULL_MASK);
+
+ /* (1) wait until FPGA enter reset phase */
+ for (i = 0; i < FPGA_TIMEOUT_CNT; i++) {
+ if (fpgamgr_get_mode() == FPGAMGRREGS_MODE_RESETPHASE)
+ break;
+ }
+
+ /* If not in reset state, return error */
+ if (fpgamgr_get_mode() != FPGAMGRREGS_MODE_RESETPHASE) {
+ puts("FPGA: Could not reset\n");
+ return -1;
+ }
+
+ /* Release FPGA from reset phase */
+ clrbits_le32(&fpgamgr_regs->ctrl, FPGAMGRREGS_CTRL_NCONFIGPULL_MASK);
+
+ /* (2) wait until FPGA enter configuration phase */
+ for (i = 0; i < FPGA_TIMEOUT_CNT; i++) {
+ if (fpgamgr_get_mode() == FPGAMGRREGS_MODE_CFGPHASE)
+ break;
+ }
+
+ /* If not in configuration state, return error */
+ if (fpgamgr_get_mode() != FPGAMGRREGS_MODE_CFGPHASE) {
+ puts("FPGA: Could not configure\n");
+ return -2;
+ }
+
+ /* Clear all interrupts in CB Monitor */
+ writel(0xFFF, &fpgamgr_regs->gpio_porta_eoi);
+
+ /* Enable AXI configuration */
+ setbits_le32(&fpgamgr_regs->ctrl, FPGAMGRREGS_CTRL_AXICFGEN_MASK);
+
+ return 0;
+}
+
+/* Write the RBF data to FPGA Manager */
+static void fpgamgr_program_write(const void *rbf_data, unsigned long rbf_size)
+{
+ uint32_t src = (uint32_t)rbf_data;
+ uint32_t dst = SOCFPGA_FPGAMGRDATA_ADDRESS;
+
+ /* Number of loops for 32-byte long copying. */
+ uint32_t loops32 = rbf_size / 32;
+ /* Number of loops for 4-byte long copying + trailing bytes */
+ uint32_t loops4 = DIV_ROUND_UP(rbf_size % 32, 4);
+
+ asm volatile(
+ "1: ldmia %0!, {r0-r7}\n"
+ " stmia %1!, {r0-r7}\n"
+ " sub %1, #32\n"
+ " subs %2, #1\n"
+ " bne 1b\n"
+ "2: ldr %2, [%0], #4\n"
+ " str %2, [%1]\n"
+ " subs %3, #1\n"
+ " bne 2b\n"
+ : "+r"(src), "+r"(dst), "+r"(loops32), "+r"(loops4) :
+ : "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", "cc");
+}
+
+/* Ensure the FPGA entering config done */
+static int fpgamgr_program_poll_cd(void)
+{
+ const uint32_t mask = FPGAMGRREGS_MON_GPIO_EXT_PORTA_NS_MASK |
+ FPGAMGRREGS_MON_GPIO_EXT_PORTA_CD_MASK;
+ unsigned long reg, i;
+
+ /* (3) wait until full config done */
+ for (i = 0; i < FPGA_TIMEOUT_CNT; i++) {
+ reg = readl(&fpgamgr_regs->gpio_ext_porta);
+
+ /* Config error */
+ if (!(reg & mask)) {
+ printf("FPGA: Configuration error.\n");
+ return -3;
+ }
+
+ /* Config done without error */
+ if (reg & mask)
+ break;
+ }
+
+ /* Timeout happened, return error */
+ if (i == FPGA_TIMEOUT_CNT) {
+ printf("FPGA: Timeout waiting for program.\n");
+ return -4;
+ }
+
+ /* Disable AXI configuration */
+ clrbits_le32(&fpgamgr_regs->ctrl, FPGAMGRREGS_CTRL_AXICFGEN_MASK);
+
+ return 0;
+}
+
+/* Ensure the FPGA entering init phase */
+static int fpgamgr_program_poll_initphase(void)
+{
+ unsigned long i;
+
+ /* Additional clocks for the CB to enter initialization phase */
+ if (fpgamgr_dclkcnt_set(0x4))
+ return -5;
+
+ /* (4) wait until FPGA enter init phase or user mode */
+ for (i = 0; i < FPGA_TIMEOUT_CNT; i++) {
+ if (fpgamgr_get_mode() == FPGAMGRREGS_MODE_INITPHASE)
+ break;
+ if (fpgamgr_get_mode() == FPGAMGRREGS_MODE_USERMODE)
+ break;
+ }
+
+ /* If not in configuration state, return error */
+ if (i == FPGA_TIMEOUT_CNT)
+ return -6;
+
+ return 0;
+}
+
+/* Ensure the FPGA entering user mode */
+static int fpgamgr_program_poll_usermode(void)
+{
+ unsigned long i;
+
+ /* Additional clocks for the CB to exit initialization phase */
+ if (fpgamgr_dclkcnt_set(0x5000))
+ return -7;
+
+ /* (5) wait until FPGA enter user mode */
+ for (i = 0; i < FPGA_TIMEOUT_CNT; i++) {
+ if (fpgamgr_get_mode() == FPGAMGRREGS_MODE_USERMODE)
+ break;
+ }
+ /* If not in configuration state, return error */
+ if (i == FPGA_TIMEOUT_CNT)
+ return -8;
+
+ /* To release FPGA Manager drive over configuration line */
+ clrbits_le32(&fpgamgr_regs->ctrl, FPGAMGRREGS_CTRL_EN_MASK);
+
+ return 0;
+}
+
+/*
+ * FPGA Manager to program the FPGA. This is the interface used by FPGA driver.
+ * Return 0 for sucess, non-zero for error.
+ */
+int socfpga_load(Altera_desc *desc, const void *rbf_data, size_t rbf_size)
+{
+ unsigned long status;
+
+ if ((uint32_t)rbf_data & 0x3) {
+ puts("FPGA: Unaligned data, realign to 32bit boundary.\n");
+ return -EINVAL;
+ }
+
+ /* Prior programming the FPGA, all bridges need to be shut off */
+
+ /* Disable all signals from hps peripheral controller to fpga */
+ writel(0, &sysmgr_regs->fpgaintfgrp_module);
+
+ /* Disable all signals from FPGA to HPS SDRAM */
+#define SDR_CTRLGRP_FPGAPORTRST_ADDRESS 0x5080
+ writel(0, SOCFPGA_SDR_ADDRESS + SDR_CTRLGRP_FPGAPORTRST_ADDRESS);
+
+ /* Disable all axi bridge (hps2fpga, lwhps2fpga & fpga2hps) */
+ socfpga_bridges_reset(1);
+
+ /* Unmap the bridges from NIC-301 */
+ writel(0x1, SOCFPGA_L3REGS_ADDRESS);
+
+ /* Initialize the FPGA Manager */
+ status = fpgamgr_program_init();
+ if (status)
+ return status;
+
+ /* Write the RBF data to FPGA Manager */
+ fpgamgr_program_write(rbf_data, rbf_size);
+
+ /* Ensure the FPGA entering config done */
+ status = fpgamgr_program_poll_cd();
+ if (status)
+ return status;
+
+ /* Ensure the FPGA entering init phase */
+ status = fpgamgr_program_poll_initphase();
+ if (status)
+ return status;
+
+ /* Ensure the FPGA entering user mode */
+ return fpgamgr_program_poll_usermode();
+}
projects / karo-tx-uboot.git / commitdiff