mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-08-29 05:18:51 +09:00
![Simon Glass](/assets/img/avatar_default.png)
Move this uncommon header out of the common header. Signed-off-by: Simon Glass <sjg@chromium.org>
119 lines
2.7 KiB
C
119 lines
2.7 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* Copyright (C) 2013 Altera Corporation <www.altera.com>
|
|
*/
|
|
|
|
|
|
#include <common.h>
|
|
#include <asm/io.h>
|
|
#include <asm/arch/fpga_manager.h>
|
|
#include <asm/arch/reset_manager.h>
|
|
#include <asm/arch/system_manager.h>
|
|
#include <linux/bitops.h>
|
|
|
|
/* Assert or de-assert SoCFPGA reset manager reset. */
|
|
void socfpga_per_reset(u32 reset, int set)
|
|
{
|
|
unsigned long reg;
|
|
u32 rstmgr_bank = RSTMGR_BANK(reset);
|
|
|
|
switch (rstmgr_bank) {
|
|
case 0:
|
|
reg = RSTMGR_GEN5_MPUMODRST;
|
|
break;
|
|
case 1:
|
|
reg = RSTMGR_GEN5_PERMODRST;
|
|
break;
|
|
case 2:
|
|
reg = RSTMGR_GEN5_PER2MODRST;
|
|
break;
|
|
case 3:
|
|
reg = RSTMGR_GEN5_BRGMODRST;
|
|
break;
|
|
case 4:
|
|
reg = RSTMGR_GEN5_MISCMODRST;
|
|
break;
|
|
|
|
default:
|
|
return;
|
|
}
|
|
|
|
if (set)
|
|
setbits_le32(socfpga_get_rstmgr_addr() + reg,
|
|
1 << RSTMGR_RESET(reset));
|
|
else
|
|
clrbits_le32(socfpga_get_rstmgr_addr() + reg,
|
|
1 << RSTMGR_RESET(reset));
|
|
}
|
|
|
|
/*
|
|
* Assert reset on every peripheral but L4WD0.
|
|
* Watchdog must be kept intact to prevent glitches
|
|
* and/or hangs.
|
|
*/
|
|
void socfpga_per_reset_all(void)
|
|
{
|
|
const u32 l4wd0 = 1 << RSTMGR_RESET(SOCFPGA_RESET(L4WD0));
|
|
|
|
writel(~l4wd0, socfpga_get_rstmgr_addr() + RSTMGR_GEN5_PERMODRST);
|
|
writel(0xffffffff, socfpga_get_rstmgr_addr() + RSTMGR_GEN5_PER2MODRST);
|
|
}
|
|
|
|
#define L3REGS_REMAP_LWHPS2FPGA_MASK 0x10
|
|
#define L3REGS_REMAP_HPS2FPGA_MASK 0x08
|
|
#define L3REGS_REMAP_OCRAM_MASK 0x01
|
|
|
|
void socfpga_bridges_set_handoff_regs(bool h2f, bool lwh2f, bool f2h)
|
|
{
|
|
u32 brgmask = 0x0;
|
|
u32 l3rmask = L3REGS_REMAP_OCRAM_MASK;
|
|
|
|
if (h2f)
|
|
brgmask |= BIT(0);
|
|
else
|
|
l3rmask |= L3REGS_REMAP_HPS2FPGA_MASK;
|
|
|
|
if (lwh2f)
|
|
brgmask |= BIT(1);
|
|
else
|
|
l3rmask |= L3REGS_REMAP_LWHPS2FPGA_MASK;
|
|
|
|
if (f2h)
|
|
brgmask |= BIT(2);
|
|
|
|
writel(brgmask,
|
|
socfpga_get_sysmgr_addr() + SYSMGR_ISWGRP_HANDOFF_OFFSET(0));
|
|
writel(l3rmask,
|
|
socfpga_get_sysmgr_addr() + SYSMGR_ISWGRP_HANDOFF_OFFSET(1));
|
|
}
|
|
|
|
void socfpga_bridges_reset(int enable)
|
|
{
|
|
const u32 l3mask = L3REGS_REMAP_LWHPS2FPGA_MASK |
|
|
L3REGS_REMAP_HPS2FPGA_MASK |
|
|
L3REGS_REMAP_OCRAM_MASK;
|
|
|
|
if (enable) {
|
|
/* brdmodrst */
|
|
writel(0x7, socfpga_get_rstmgr_addr() + RSTMGR_GEN5_BRGMODRST);
|
|
writel(L3REGS_REMAP_OCRAM_MASK, SOCFPGA_L3REGS_ADDRESS);
|
|
} else {
|
|
socfpga_bridges_set_handoff_regs(false, false, false);
|
|
|
|
/* Check signal from FPGA. */
|
|
if (!fpgamgr_test_fpga_ready()) {
|
|
/* FPGA not ready, do nothing. We allow system to boot
|
|
* without FPGA ready. So, return 0 instead of error. */
|
|
printf("%s: FPGA not ready, aborting.\n", __func__);
|
|
return;
|
|
}
|
|
|
|
/* brdmodrst */
|
|
writel(0, socfpga_get_rstmgr_addr() + RSTMGR_GEN5_BRGMODRST);
|
|
|
|
/* Remap the bridges into memory map */
|
|
writel(l3mask, SOCFPGA_L3REGS_ADDRESS);
|
|
}
|
|
return;
|
|
}
|