mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-06-09 23:36:03 +09:00
cd93d625fd
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+
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/*
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* Copyright (C) 2013 Altera Corporation <www.altera.com>
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*/
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#include <common.h>
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#include <asm/io.h>
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#include <asm/arch/fpga_manager.h>
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#include <asm/arch/reset_manager.h>
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#include <asm/arch/system_manager.h>
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#include <linux/bitops.h>
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/* Assert or de-assert SoCFPGA reset manager reset. */
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void socfpga_per_reset(u32 reset, int set)
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{
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unsigned long reg;
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u32 rstmgr_bank = RSTMGR_BANK(reset);
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switch (rstmgr_bank) {
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case 0:
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reg = RSTMGR_GEN5_MPUMODRST;
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break;
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case 1:
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reg = RSTMGR_GEN5_PERMODRST;
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break;
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case 2:
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reg = RSTMGR_GEN5_PER2MODRST;
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break;
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case 3:
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reg = RSTMGR_GEN5_BRGMODRST;
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break;
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case 4:
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reg = RSTMGR_GEN5_MISCMODRST;
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break;
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default:
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return;
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}
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if (set)
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setbits_le32(socfpga_get_rstmgr_addr() + reg,
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1 << RSTMGR_RESET(reset));
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else
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clrbits_le32(socfpga_get_rstmgr_addr() + reg,
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1 << RSTMGR_RESET(reset));
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}
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/*
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* Assert reset on every peripheral but L4WD0.
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* Watchdog must be kept intact to prevent glitches
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* and/or hangs.
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*/
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void socfpga_per_reset_all(void)
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{
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const u32 l4wd0 = 1 << RSTMGR_RESET(SOCFPGA_RESET(L4WD0));
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writel(~l4wd0, socfpga_get_rstmgr_addr() + RSTMGR_GEN5_PERMODRST);
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writel(0xffffffff, socfpga_get_rstmgr_addr() + RSTMGR_GEN5_PER2MODRST);
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}
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#define L3REGS_REMAP_LWHPS2FPGA_MASK 0x10
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#define L3REGS_REMAP_HPS2FPGA_MASK 0x08
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#define L3REGS_REMAP_OCRAM_MASK 0x01
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void socfpga_bridges_set_handoff_regs(bool h2f, bool lwh2f, bool f2h)
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{
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u32 brgmask = 0x0;
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u32 l3rmask = L3REGS_REMAP_OCRAM_MASK;
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if (h2f)
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brgmask |= BIT(0);
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else
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l3rmask |= L3REGS_REMAP_HPS2FPGA_MASK;
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if (lwh2f)
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brgmask |= BIT(1);
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else
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l3rmask |= L3REGS_REMAP_LWHPS2FPGA_MASK;
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if (f2h)
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brgmask |= BIT(2);
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writel(brgmask,
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socfpga_get_sysmgr_addr() + SYSMGR_ISWGRP_HANDOFF_OFFSET(0));
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writel(l3rmask,
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socfpga_get_sysmgr_addr() + SYSMGR_ISWGRP_HANDOFF_OFFSET(1));
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}
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void socfpga_bridges_reset(int enable)
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{
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const u32 l3mask = L3REGS_REMAP_LWHPS2FPGA_MASK |
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L3REGS_REMAP_HPS2FPGA_MASK |
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L3REGS_REMAP_OCRAM_MASK;
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if (enable) {
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/* brdmodrst */
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writel(0x7, socfpga_get_rstmgr_addr() + RSTMGR_GEN5_BRGMODRST);
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writel(L3REGS_REMAP_OCRAM_MASK, SOCFPGA_L3REGS_ADDRESS);
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} else {
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socfpga_bridges_set_handoff_regs(false, false, false);
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/* Check signal from FPGA. */
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if (!fpgamgr_test_fpga_ready()) {
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/* FPGA not ready, do nothing. We allow system to boot
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* without FPGA ready. So, return 0 instead of error. */
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printf("%s: FPGA not ready, aborting.\n", __func__);
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return;
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}
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/* brdmodrst */
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writel(0, socfpga_get_rstmgr_addr() + RSTMGR_GEN5_BRGMODRST);
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/* Remap the bridges into memory map */
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writel(l3mask, SOCFPGA_L3REGS_ADDRESS);
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}
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return;
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}
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