[U-Boot] [PATCH] arch: mips: Update initrd_start and initrd_end

[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 at microchip.com>
---
 arch/mips/lib/bootm.c | 2 ++
 1 file changed, 2 insertions(+)

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);
 }
-- 
2.7.4