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15ca25e31e
The existing QEMU implementation mostly ignored BLOBLIST_TABLES and allocates the bulk of the tables with malloc(). Update it to place all tables in the bloblist. Since QEMU declares a size of 128KB regardless of the size of its tables, this requires a larger bloblist. Fix up the e820 table to handle this, keeping the old code as an option for now, to assist with any future bug-fixing. Signed-off-by: Simon Glass <sjg@chromium.org>
54 lines
1.5 KiB
C
54 lines
1.5 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* QEMU x86 specific E820 table generation
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*
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* (C) Copyright 2015 Miao Yan <yanmiaobest@gmail.com>
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* (C) Copyright 2019 Bin Meng <bmeng.cn@gmail.com>
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*/
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#include <bloblist.h>
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#include <env_internal.h>
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#include <malloc.h>
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#include <asm/e820.h>
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#include <asm/arch/qemu.h>
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#include <asm/global_data.h>
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#include <linux/sizes.h>
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DECLARE_GLOBAL_DATA_PTR;
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unsigned int install_e820_map(unsigned int max_entries,
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struct e820_entry *entries)
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{
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u64 high_mem_size;
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struct e820_ctx ctx;
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e820_init(&ctx, entries, max_entries);
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e820_next(&ctx, E820_RAM, ISA_START_ADDRESS);
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e820_next(&ctx, E820_RESERVED, ISA_END_ADDRESS);
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/*
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* if we use bloblist to allocate high memory for storing ACPI tables,
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* we need to reserve that region in e820 tables, otherwise the kernel
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* will reclaim them and data will be corrupted. The ACPI tables may not
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* have been written yet, so use the whole bloblist size
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*/
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if (IS_ENABLED(CONFIG_BLOBLIST_TABLES)) {
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e820_to_addr(&ctx, E820_RAM, (ulong)gd->bloblist);
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e820_next(&ctx, E820_ACPI, bloblist_get_total_size());
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} else {
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/* If using memalign() reserve that whole region instead */
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e820_to_addr(&ctx, E820_RAM, gd->relocaddr - TOTAL_MALLOC_LEN);
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e820_next(&ctx, E820_ACPI, TOTAL_MALLOC_LEN);
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}
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e820_to_addr(&ctx, E820_RAM, qemu_get_low_memory_size());
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e820_add(&ctx, E820_RESERVED, CONFIG_PCIE_ECAM_BASE,
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CONFIG_PCIE_ECAM_SIZE);
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high_mem_size = qemu_get_high_memory_size();
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if (high_mem_size)
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e820_add(&ctx, E820_RAM, SZ_4G, high_mem_size);
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return e820_finish(&ctx);
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}
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