mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-14 08:57:58 +00:00
6867e19a43
Move FPGA driver which is Gen5 specific code into Gen5 driver file and keeping common FPGA driver intact. All the changes are still keeping in driver/fpga/ and no functional change. Subsequent patch would move FPGA manager driver from arch/arm into driver/fpga/. Signed-off-by: Tien Fong Chee <tien.fong.chee@intel.com> Reviewed-by: Ley Foon Tan <ley.foon.tan@intel.com> Reviewed-by: Dinh Nguyen <dinguyen@kernel.org>
73 lines
1.7 KiB
C
73 lines
1.7 KiB
C
/*
|
|
* 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 <linux/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;
|
|
|
|
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;
|
|
}
|
|
|
|
/* Write the RBF data to FPGA Manager */
|
|
void fpgamgr_program_write(const void *rbf_data, size_t 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"
|
|
" cmp %3, #0\n"
|
|
" beq 3f\n"
|
|
"2: ldr %2, [%0], #4\n"
|
|
" str %2, [%1]\n"
|
|
" subs %3, #1\n"
|
|
" bne 2b\n"
|
|
"3: nop\n"
|
|
: "+r"(src), "+r"(dst), "+r"(loops32), "+r"(loops4) :
|
|
: "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", "cc");
|
|
}
|
|
|