67 lines
1.5 KiB
C
67 lines
1.5 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright (C) 2020 Intel Corporation <www.intel.com>
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*
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*/
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#include <asm/arch/handoff_soc64.h>
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#include <asm/io.h>
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#include <common.h>
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#include <errno.h>
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#include "log.h"
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int socfpga_get_handoff_size(void *handoff_address, enum endianness endian)
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{
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u32 size;
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size = readl(handoff_address + SOC64_HANDOFF_OFFSET_LENGTH);
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if (endian == BIG_ENDIAN)
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size = swab32(size);
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size = (size - SOC64_HANDOFF_OFFSET_DATA) / sizeof(u32);
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debug("%s: handoff address = 0x%p handoff size = 0x%08x\n", __func__,
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(u32 *)handoff_address, size);
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return size;
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}
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int socfpga_handoff_read(void *handoff_address, void *table, u32 table_len,
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enum endianness big_endian)
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{
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u32 temp, i;
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u32 *table_x32 = table;
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debug("%s: handoff addr = 0x%p ", __func__, (u32 *)handoff_address);
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if (big_endian) {
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if (swab32(readl(SOC64_HANDOFF_BASE)) == SOC64_HANDOFF_MAGIC_BOOT) {
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debug("Handoff table address = 0x%p ", table_x32);
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debug("table length = 0x%x\n", table_len);
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debug("%s: handoff data =\n{\n", __func__);
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for (i = 0; i < table_len; i++) {
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temp = readl(handoff_address +
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SOC64_HANDOFF_OFFSET_DATA +
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(i * sizeof(u32)));
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*table_x32 = swab32(temp);
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if (!(i % 2))
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debug(" No.%d Addr 0x%08x: ", i,
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*table_x32);
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else
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debug(" 0x%08x\n", *table_x32);
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table_x32++;
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}
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debug("\n}\n");
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} else {
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debug("%s: Cannot find SOC64_HANDOFF_MAGIC_BOOT ", __func__);
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debug("at addr 0x%p\n", (u32 *)handoff_address);
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return -EPERM;
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}
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}
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return 0;
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}
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