diff options
Diffstat (limited to 'arch/x86/cpu/qemu')
| -rw-r--r-- | arch/x86/cpu/qemu/e820.c | 59 |
1 files changed, 40 insertions, 19 deletions
diff --git a/arch/x86/cpu/qemu/e820.c b/arch/x86/cpu/qemu/e820.c index e682486547..a4136eb98c 100644 --- a/arch/x86/cpu/qemu/e820.c +++ b/arch/x86/cpu/qemu/e820.c @@ -1,46 +1,67 @@ // SPDX-License-Identifier: GPL-2.0+ /* + * QEMU x86 specific E820 table generation + * * (C) Copyright 2015 Miao Yan <yanmiaobest@gmail.com> + * (C) Copyright 2019 Bin Meng <bmeng.cn@gmail.com> */ #include <common.h> #include <env_internal.h> #include <asm/e820.h> +#include <asm/arch/qemu.h> DECLARE_GLOBAL_DATA_PTR; unsigned int install_e820_map(unsigned int max_entries, struct e820_entry *entries) { - entries[0].addr = 0; - entries[0].size = ISA_START_ADDRESS; - entries[0].type = E820_RAM; + u64 high_mem_size; + int n = 0; - entries[1].addr = ISA_START_ADDRESS; - entries[1].size = ISA_END_ADDRESS - ISA_START_ADDRESS; - entries[1].type = E820_RESERVED; + entries[n].addr = 0; + entries[n].size = ISA_START_ADDRESS; + entries[n].type = E820_RAM; + n++; + + entries[n].addr = ISA_START_ADDRESS; + entries[n].size = ISA_END_ADDRESS - ISA_START_ADDRESS; + entries[n].type = E820_RESERVED; + n++; /* * since we use memalign(malloc) to allocate high memory for * storing ACPI tables, we need to reserve them in e820 tables, * otherwise kernel will reclaim them and data will be corrupted */ - entries[2].addr = ISA_END_ADDRESS; - entries[2].size = gd->relocaddr - TOTAL_MALLOC_LEN - ISA_END_ADDRESS; - entries[2].type = E820_RAM; + entries[n].addr = ISA_END_ADDRESS; + entries[n].size = gd->relocaddr - TOTAL_MALLOC_LEN - ISA_END_ADDRESS; + entries[n].type = E820_RAM; + n++; /* for simplicity, reserve entire malloc space */ - entries[3].addr = gd->relocaddr - TOTAL_MALLOC_LEN; - entries[3].size = TOTAL_MALLOC_LEN; - entries[3].type = E820_RESERVED; + entries[n].addr = gd->relocaddr - TOTAL_MALLOC_LEN; + entries[n].size = TOTAL_MALLOC_LEN; + entries[n].type = E820_RESERVED; + n++; + + entries[n].addr = gd->relocaddr; + entries[n].size = qemu_get_low_memory_size() - gd->relocaddr; + entries[n].type = E820_RESERVED; + n++; - entries[4].addr = gd->relocaddr; - entries[4].size = gd->ram_size - gd->relocaddr; - entries[4].type = E820_RESERVED; + entries[n].addr = CONFIG_PCIE_ECAM_BASE; + entries[n].size = CONFIG_PCIE_ECAM_SIZE; + entries[n].type = E820_RESERVED; + n++; - entries[5].addr = CONFIG_PCIE_ECAM_BASE; - entries[5].size = CONFIG_PCIE_ECAM_SIZE; - entries[5].type = E820_RESERVED; + high_mem_size = qemu_get_high_memory_size(); + if (high_mem_size) { + entries[n].addr = SZ_4G; + entries[n].size = high_mem_size; + entries[n].type = E820_RAM; + n++; + } - return 6; + return n; } |