openrisc: Add support for external initrd images

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In OpenRISC we set the initrd_start and initrd_end based on the symbols
we setup in vmlinux.lds.S.  However, this is not needed if we use the
generic linker description in INIT_DATA_SECTION.

Removing our own initrd setup reduces code, but also the generic code
supports loading external initrd images.  A bootloader can load a rootfs
image into memory and we can configure devicetree to load it with:

        chosen {
                bootargs = "earlycon";
                stdout-path = "uart0:115200";
                linux,initrd-start = < 0x08000100 >;
                linux,initrd-end = < 0x08200000 >;
        };

Reported-by: Mateusz Holenko <mholenko@antmicro.com>
Signed-off-by: Stafford Horne <shorne@gmail.com>

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This commit is contained in:

Stafford Horne 2020-07-05 05:53:49 +09:00

parent d0b7213f89

commit ff6c923dbe

2 changed files with 5 additions and 15 deletions

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8

arch/openrisc/kernel/setup.c

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12

arch/openrisc/kernel/vmlinux.lds.S

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