diff options
Diffstat (limited to 'Documentation/x86/early-microcode.txt')
| -rw-r--r-- | Documentation/x86/early-microcode.txt | 11 |
1 files changed, 5 insertions, 6 deletions
diff --git a/Documentation/x86/early-microcode.txt b/Documentation/x86/early-microcode.txt index 4aaf0dfb0cb8..d62bea6796da 100644 --- a/Documentation/x86/early-microcode.txt +++ b/Documentation/x86/early-microcode.txt @@ -11,7 +11,8 @@ file and loaded to CPUs during boot time. The format of the combined initrd image is microcode in cpio format followed by the initrd image (maybe compressed). Kernel parses the combined initrd image during boot time. The microcode file in cpio name space is: -kernel/x86/microcode/GenuineIntel.bin +on Intel: kernel/x86/microcode/GenuineIntel.bin +on AMD : kernel/x86/microcode/AuthenticAMD.bin During BSP boot (before SMP starts), if the kernel finds the microcode file in the initrd file, it parses the microcode and saves matching microcode in memory. @@ -34,10 +35,8 @@ original initrd image /boot/initrd-3.5.0.img. mkdir initrd cd initrd -mkdir kernel -mkdir kernel/x86 -mkdir kernel/x86/microcode -cp ../microcode.bin kernel/x86/microcode/GenuineIntel.bin -find .|cpio -oc >../ucode.cpio +mkdir -p kernel/x86/microcode +cp ../microcode.bin kernel/x86/microcode/GenuineIntel.bin (or AuthenticAMD.bin) +find . | cpio -o -H newc >../ucode.cpio cd .. cat ucode.cpio /boot/initrd-3.5.0.img >/boot/initrd-3.5.0.ucode.img |