C++ 如何在C中获得Linux闪存ROM的大小？
是否有任何C/C++库或Linux系统命令可用于获取ROM大小？ 启动时，内核以Mb为单位显示适当的大小。我只是找不到我能从哪里拉出来 谢谢-纳泽C++ 如何在C中获得Linux闪存ROM的大小？,c++,linux,embedded-linux,C++,Linux,Embedded Linux,是否有任何C/C++库或Linux系统命令可用于获取ROM大小？ 启动时，内核以Mb为单位显示适当的大小。我只是找不到我能从哪里拉出来 谢谢-纳泽 顺便说一下，我在嵌入式系统上使用jff2 ROM文件系统。ARM7 cpu。不确定底层系统功能是什么，但是dmidecode（）是一个可以在shell上运行的程序，它将转储大量信息，包括bios ROM大小。在我的机器上，它执行以下操作： sophiel:/home/owner# dmidecode | more # dmidecode 2.9 SM
顺便说一下，我在嵌入式系统上使用jff2 ROM文件系统。ARM7 cpu。不确定底层系统功能是什么，但是
dmidecodesophiel:/home/owner# dmidecode | more
# dmidecode 2.9
SMBIOS 2.3 present.
59 structures occupying 1891 bytes.
Table at 0x000F0450.
Handle 0xDA00, DMI type 218, 35 bytes
OEM-specific Type
Header and Data:
DA 23 00 DA B2 00 17 0B 0E 18 00 58 00 58 00 01
00 59 00 59 00 01 00 05 80 05 80 01 00 FF FF 00
00 00 00
Handle 0xDA01, DMI type 218, 17 bytes
OEM-specific Type
Header and Data:
DA 11 01 DA B2 00 17 0B 0E 18 00 FF FF 00 00 00
00
Handle 0x0000, DMI type 0, 20 bytes
BIOS Information
Vendor: Dell Computer Corporation
Version: A03
Release Date: 01/05/2006
Address: 0xF0000
Runtime Size: 64 kB
ROM Size: 512 kB
Characteristics:
PCI is supported
PNP is supported
APM is supported
BIOS is upgradeable
BIOS shadowing is allowed
ESCD support is available
Boot from CD is supported
Selectable boot is supported
EDD is supported
Japanese floppy for Toshiba 1.2 MB is supported (int 13h)
Print screen service is supported (int 5h)
8042 keyboard services are supported (int 9h)
Serial services are supported (int 14h)
Printer services are supported (int 17h)
ACPI is supported
USB legacy is supported
LS-120 boot is supported
BIOS boot specification is supported
Function key-initiated network boot is supported
它是开源的，所以我打赌你可以深入研究它并弄清楚它是如何工作的：我希望需要大量的二进制数据解码。如果它显示为mtd设备，你可以执行以下操作
cat /proc/mtd
dev: size erasesize name
mtd0: 00030000 00010000 "BootLoaders"
mtd1: 00200000 00010000 "Kernel"
mtd2: 00280000 00010000 "RootFS"
mtd3: 00350000 00010000 "User"
有关单个mtd的更多信息，请参见
/sys/class/mtddmesgdf