Am 24.04.19 um 17:21 schrieb Horatiu Vultur:
Microsemi SoC defines CONFIG_SYS_SDRAM_BASE to be 0x80000000, which represents the start of kseg0 and represents a virtual address. Meaning that the initrd_start and initrd_end point somewhere kseg0. When these parameters are passed to linux kernel through DT they are pointing somewhere in kseg0 which is a virtual address but linux kernel expects the addresses to be physical addresses(in kuseg) because it is converting the physical address to a virtual one.
Therefore update the uboot to pass the physical address of initrd_start and initrd_end by converting them using the function virt_to_phys before setting up the DT.
Signed-off-by: Horatiu Vultur horatiu.vultur@microchip.com
arch/mips/lib/bootm.c | 2 ++ 1 file changed, 2 insertions(+)
There is still a task on my TODO list to convert and interpret CONFIG_SYS_SDRAM_BASE as physical address on MIPS so that patch would actually not be necessary. Paul already prepared some patches in the past, but additionally we need to properly support map_physmem() and fix some places in common code. Until we have this, I'll apply this patch, thanks.
Reviewed-by: Daniel Schwierzeck daniel.schwierzeck@gmail.com
diff --git a/arch/mips/lib/bootm.c b/arch/mips/lib/bootm.c index 35152cb..6a462f3 100644 --- a/arch/mips/lib/bootm.c +++ b/arch/mips/lib/bootm.c @@ -247,6 +247,8 @@ int arch_fixup_fdt(void *blob)
static int boot_setup_fdt(bootm_headers_t *images) {
- images->initrd_start = virt_to_phys((void *)images->initrd_start);
- images->initrd_end = virt_to_phys((void *)images->initrd_end); return image_setup_libfdt(images, images->ft_addr, images->ft_len, &images->lmb);
}