2 * Copyright (C) 2012-2017 Altera Corporation <www.altera.com>
5 * SPDX-License-Identifier: BSD-3-Clause
10 #include <linux/errno.h>
11 #include <asm/arch/fpga_manager.h>
12 #include <asm/arch/reset_manager.h>
13 #include <asm/arch/system_manager.h>
16 #define FPGA_TIMEOUT_CNT 0x1000000
18 static struct socfpga_fpga_manager *fpgamgr_regs =
19 (struct socfpga_fpga_manager *)SOCFPGA_FPGAMGRREGS_ADDRESS;
21 int fpgamgr_dclkcnt_set(unsigned long cnt)
25 /* Clear any existing done status */
26 if (readl(&fpgamgr_regs->dclkstat))
27 writel(0x1, &fpgamgr_regs->dclkstat);
29 /* Write the dclkcnt */
30 writel(cnt, &fpgamgr_regs->dclkcnt);
32 /* Wait till the dclkcnt done */
33 for (i = 0; i < FPGA_TIMEOUT_CNT; i++) {
34 if (!readl(&fpgamgr_regs->dclkstat))
37 writel(0x1, &fpgamgr_regs->dclkstat);
44 /* Write the RBF data to FPGA Manager */
45 void fpgamgr_program_write(const void *rbf_data, size_t rbf_size)
47 uint32_t src = (uint32_t)rbf_data;
48 uint32_t dst = SOCFPGA_FPGAMGRDATA_ADDRESS;
50 /* Number of loops for 32-byte long copying. */
51 uint32_t loops32 = rbf_size / 32;
52 /* Number of loops for 4-byte long copying + trailing bytes */
53 uint32_t loops4 = DIV_ROUND_UP(rbf_size % 32, 4);
58 "1: ldmia %0!, {r0-r7}\n"
59 " stmia %1!, {r0-r7}\n"
65 "3: ldr %2, [%0], #4\n"
70 : "+r"(src), "+r"(dst), "+r"(loops32), "+r"(loops4) :
71 : "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", "cc");