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>
init_mm.brk = (unsigned long)_end;
#ifdef CONFIG_BLK_DEV_INITRD
- initrd_start = (unsigned long)&__initrd_start;
- initrd_end = (unsigned long)&__initrd_end;
if (initrd_start == initrd_end) {
+ printk(KERN_INFO "Initial ramdisk not found\n");
initrd_start = 0;
initrd_end = 0;
+ } else {
+ printk(KERN_INFO "Initial ramdisk at: 0x%p (%lu bytes)\n",
+ (void *)(initrd_start), initrd_end - initrd_start);
+ initrd_below_start_ok = 1;
}
- initrd_below_start_ok = 1;
#endif
/* setup memblock allocator */
__init_end = .;
- . = ALIGN(PAGE_SIZE);
- .initrd : AT(ADDR(.initrd) - LOAD_OFFSET)
- {
- __initrd_start = .;
- *(.initrd)
- __initrd_end = .;
- FILL (0);
- . = ALIGN (PAGE_SIZE);
- }
-
- __vmlinux_end = .; /* last address of the physical file */
-
BSS_SECTION(0, 0, 0x20)
_end = .;