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Diffstat (limited to 'arch/mips/netlogic/xlp/setup.c')
-rw-r--r--arch/mips/netlogic/xlp/setup.c32
1 files changed, 31 insertions, 1 deletions
diff --git a/arch/mips/netlogic/xlp/setup.c b/arch/mips/netlogic/xlp/setup.c
index 3dec9f28b65..d8997098def 100644
--- a/arch/mips/netlogic/xlp/setup.c
+++ b/arch/mips/netlogic/xlp/setup.c
@@ -35,6 +35,7 @@
#include <linux/kernel.h>
#include <linux/serial_8250.h>
#include <linux/pm.h>
+#include <linux/bootmem.h>
#include <asm/reboot.h>
#include <asm/time.h>
@@ -56,6 +57,7 @@ unsigned long nlm_common_ebase = 0x0;
/* default to uniprocessor */
uint32_t nlm_coremask = 1, nlm_cpumask = 1;
int nlm_threads_per_core = 1;
+extern u32 __dtb_start[];
static void nlm_linux_exit(void)
{
@@ -96,9 +98,18 @@ void __init prom_init(void)
{
void *fdtp;
- fdtp = (void *)(long)fw_arg0;
xlp_mmu_init();
nlm_hal_init();
+
+ /*
+ * If no FDT pointer is passed in, use the built-in FDT.
+ * device_tree_init() does not handle CKSEG0 pointers in
+ * 64-bit, so convert pointer.
+ */
+ fdtp = (void *)(long)fw_arg0;
+ if (!fdtp)
+ fdtp = __dtb_start;
+ fdtp = phys_to_virt(__pa(fdtp));
early_init_devtree(fdtp);
nlm_common_ebase = read_c0_ebase() & (~((1 << 12) - 1));
@@ -112,6 +123,25 @@ void __init prom_init(void)
#endif
}
+void __init device_tree_init(void)
+{
+ unsigned long base, size;
+
+ if (!initial_boot_params)
+ return;
+
+ base = virt_to_phys((void *)initial_boot_params);
+ size = be32_to_cpu(initial_boot_params->totalsize);
+
+ /* Before we do anything, lets reserve the dt blob */
+ reserve_bootmem(base, size, BOOTMEM_DEFAULT);
+
+ unflatten_device_tree();
+
+ /* free the space reserved for the dt blob */
+ free_bootmem(base, size);
+}
+
static struct of_device_id __initdata xlp_ids[] = {
{ .compatible = "simple-bus", },
{},