2 * Copyright (C) 2012 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>
15 DECLARE_GLOBAL_DATA_PTR
;
18 #define FPGA_TIMEOUT_CNT 0x1000000
20 static struct socfpga_fpga_manager
*fpgamgr_regs
=
21 (struct socfpga_fpga_manager
*)SOCFPGA_FPGAMGRREGS_ADDRESS
;
23 int fpgamgr_dclkcnt_set(unsigned long cnt
)
27 /* Clear any existing done status */
28 if (readl(&fpgamgr_regs
->dclkstat
))
29 writel(0x1, &fpgamgr_regs
->dclkstat
);
31 /* Write the dclkcnt */
32 writel(cnt
, &fpgamgr_regs
->dclkcnt
);
34 /* Wait till the dclkcnt done */
35 for (i
= 0; i
< FPGA_TIMEOUT_CNT
; i
++) {
36 if (!readl(&fpgamgr_regs
->dclkstat
))
39 writel(0x1, &fpgamgr_regs
->dclkstat
);
46 /* Write the RBF data to FPGA Manager */
47 void fpgamgr_program_write(const void *rbf_data
, size_t rbf_size
)
49 uint32_t src
= (uint32_t)rbf_data
;
50 uint32_t dst
= SOCFPGA_FPGAMGRDATA_ADDRESS
;
52 /* Number of loops for 32-byte long copying. */
53 uint32_t loops32
= rbf_size
/ 32;
54 /* Number of loops for 4-byte long copying + trailing bytes */
55 uint32_t loops4
= DIV_ROUND_UP(rbf_size
% 32, 4);
58 "1: ldmia %0!, {r0-r7}\n"
59 " stmia %1!, {r0-r7}\n"
65 "2: ldr %2, [%0], #4\n"
70 : "+r"(src
), "+r"(dst
), "+r"(loops32
), "+r"(loops4
) :
71 : "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", "cc");