Update kernel load address for FIT examples to avoid relocation:
- Kernel example uses Image.gz with U-Boot gzip decompression
at final kernel location 0x0xC0008000.
- Copro example loads zImage at a correct location (0xC4000000),
to avoid zImage relocation before decompression by kernel code.
An other solution to avoid zImage relocation is to align
the kernel load and entry address with the real location in FIT
(the relocation of zImage is skipped in U-Boot bootm command for
identical address) but it is less flexible because this offset
depends on FIT content:
For example:
## Loading kernel from FIT Image at c2000000 ...
Using 'ev1' configuration
Trying 'kernel' kernel subimage
Description: Linux kernel
Created: 2020-10-22 9:08:32 UTC
Type: Kernel Image
Compression: uncompressed
Data Start: 0xc20000cc
The kernel offset in FIT is 0xCC in FIT and zImage is decompressed at
0xC0008000 by kernel code:
kernel {
description = "Linux kernel";
data = /incbin/("zImage");
type = "kernel";
arch = "arm";
os = "linux";
compression = "none";
load = <0xC20000cc>;
entry = <0xC20000cc>;
hash-1 {
algo = "sha1";
};
};
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Reviewed-by: Patrice Chotard <patrice.chotard@st.com>
Add example of its files to generate FIT to start kernel
on ev1 or dk2 board with
- only kernel and dtb = fit_copro_kernel_dtb.its
- kernel, M4 copro firmware and dtb = it_copro_kernel_dtb.its
Add extlinux example to manage config in generated FIT.
Signed-off-by: Loic Pallardy <loic.pallardy@st.com>
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
