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stm32mp: stm32prog: add support of initrd in flashlayout

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Add the support in command stm32prog of kernel load and start
with initrd file, identify by the partition Type "Binary" in
the flashlayout.tsv, for example:

- 0x01 fsbl	Binary none 0x0 tfa.stm32
- 0x03 fip	Binary none 0x0 fip.bin
P 0x10 kernel System ram0 0xC2000000 uImage.bin
P 0x11 dtb FileSystem ram0 0xC4000000 board.dtb
P 0x12 initrd Binary ram0 0xC4400000 <initrd>

The <initrd> file can be a legacy image "uInitrd", generated
with mkimage, or a RAW initrd image "initrd.gz".

After a DFU detach the bootm command with be executed
with the associated address, for example:

$> bootm 0xC2000000 0xC4400000:<size> 0xC4000000

When the "Binary" partition type is absent, the 'bootm'
command starts the kernel without ramdisk, for example:

$> bootm 0xC2000000 - 0xC4000000

With this paths, it is no more mandatory to generate FIT
including the kernel, DT and initrd:

- 0x01 fsbl Binary none 0x0 tfa.stm32
- 0x03 fip Binary none 0x0 fip.bin
P 0x10 fit System ram0 0xC2000000 fit.bin

Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
This commit is contained in:
Patrick Delaunay 2021-05-18 15:12:06 +02:00 • committed by Patrice Chotard
parent d4358a648c
commit d68e53b279
3 changed files with 24 additions and 10 deletions
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2
arch/arm/mach-stm32mp/cmd_stm32prog/stm32prog.h
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@ -142,6 +142,8 @@ struct stm32prog_data {
/* bootm information */
u32 uimage;
u32 dtb;
u32 initrd;
u32 initrd_size;
};
extern struct stm32prog_data *stm32prog_data;