|Subject:||Question about the boot protocol|
|Date:||Thu, 30 Aug 2018 06:25:24 +0000|
Recently I have learned the grub2.02 source code.
Linux kernel Documents/x86/boot.txt :
(1) 16-bit boot protocol
(2) 32-bit boot protocol:
(3) 64-bit boot protocol: 64-bit cpu/kernel/bootloader
Some questions about it.
Question 1: How do I check that grub2 is 16-bit, 32-bit or 64-bit?
Question 3: What the different about efi-kernel?
Question 4: linux /boot/bzImage
The code for the protection mode was copied to 0x100000, and I found through debugging that it was the virtual address, and the physical address was 0x1000000, while the value of the bzImage header code32_start at 0x214/4 is 0x100000, is the value the physical address ?
And what the relationships between code32_start at 0x214/4 and pref_address at 0258/8?
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