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| author | Stefano Babic <sbabic@denx.de> | 2015-10-23 12:35:42 +0200 |
|---|---|---|
| committer | Stefano Babic <sbabic@denx.de> | 2015-10-23 12:35:42 +0200 |
| commit | a69fdc7787bfa2f27eed74c2ee58c28ce932d502 (patch) | |
| tree | 4731dbe1c7371c0c797641d9e755a93e614ec930 /arch/x86/lib/e820.c | |
| parent | 42e550d44bc2335a18065b155cc408f30f0502ef (diff) | |
| parent | 9f13b6d147dc74f2400ce18d9d4005ba53f21fd3 (diff) | |
Merge branch 'master' of git://git.denx.de/u-boot
Diffstat (limited to 'arch/x86/lib/e820.c')
| -rw-r--r-- | arch/x86/lib/e820.c | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/arch/x86/lib/e820.c b/arch/x86/lib/e820.c new file mode 100644 index 0000000000..5babfde268 --- /dev/null +++ b/arch/x86/lib/e820.c @@ -0,0 +1,37 @@ +/* + * Copyright (C) 2015, Bin Meng <bmeng.cn@gmail.com> + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <asm/e820.h> + +DECLARE_GLOBAL_DATA_PTR; + +/* + * Install a default e820 table with 4 entries as follows: + * + * 0x000000-0x0a0000 Useable RAM + * 0x0a0000-0x100000 Reserved for ISA + * 0x100000-gd->ram_size Useable RAM + * CONFIG_PCIE_ECAM_BASE PCIe ECAM + */ +__weak unsigned install_e820_map(unsigned max_entries, + struct e820entry *entries) +{ + entries[0].addr = 0; + entries[0].size = ISA_START_ADDRESS; + entries[0].type = E820_RAM; + entries[1].addr = ISA_START_ADDRESS; + entries[1].size = ISA_END_ADDRESS - ISA_START_ADDRESS; + entries[1].type = E820_RESERVED; + entries[2].addr = ISA_END_ADDRESS; + entries[2].size = gd->ram_size - ISA_END_ADDRESS; + entries[2].type = E820_RAM; + entries[3].addr = CONFIG_PCIE_ECAM_BASE; + entries[3].size = CONFIG_PCIE_ECAM_SIZE; + entries[3].type = E820_RESERVED; + + return 4; +} |