--- a/arch/mips/ath79/setup.c
+++ b/arch/mips/ath79/setup.c
-@@ -251,6 +251,8 @@ void __init plat_time_init(void)
+@@ -253,6 +253,8 @@ void __init plat_time_init(void)
mips_hpt_frequency = cpu_clk_rate / 2;
}
u32 reg, mask;
+#if CONFIG_OF
-+ if (fw_arg0 == -2)
-+ early_init_dt_verify((void *)fw_arg1);
++ if (fw_passed_dtb)
++ early_init_dt_verify((void *)fw_passed_dtb);
+#endif
+
bcm63xx_cpu_init();
--- /dev/null
+From b8f54f2cde788623f41d11327688c75aed34092f Mon Sep 17 00:00:00 2001
+From: Jonas Gorski <jogo@openwrt.org>
+Date: Mon, 20 Jun 2016 11:27:36 +0200
+Subject: [PATCH 1/2] MIPS: ZBOOT: copy appended dtb to the end of the kernel
+
+Instead of rewriting the arguments, just move the appended dtb to where
+the decompressed kernel expects it. This eliminates the need for special
+casing vmlinuz.bin appended dtb files.
+
+Signed-off-by: Jonas Gorski <jogo@openwrt.org>
+Cc: Kevin Cernekee <cernekee@gmail.com>
+Cc: Florian Fainelli <f.fainelli@gmail.com>
+Cc: John Crispin <john@phrozen.org>
+Cc: Paul Burton <paul.burton@imgtec.com>
+Cc: James Hogan <james.hogan@imgtec.com>
+Cc: Alban Bedel <albeu@free.fr>
+Cc: Daniel Gimpelevich <daniel@gimpelevich.san-francisco.ca.us>
+Cc: Antony Pavlov <antonynpavlov@gmail.com>
+Cc: linux-mips@linux-mips.org
+Patchwork: https://patchwork.linux-mips.org/patch/13698/
+Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
+---
+ arch/mips/Kconfig | 22 ++--------------------
+ arch/mips/boot/compressed/decompress.c | 17 +++++++++++++++++
+ arch/mips/boot/compressed/head.S | 16 ----------------
+ 3 files changed, 19 insertions(+), 36 deletions(-)
+
+--- a/arch/mips/Kconfig
++++ b/arch/mips/Kconfig
+@@ -2752,10 +2752,10 @@ choice
+ the documented boot protocol using a device tree.
+
+ config MIPS_RAW_APPENDED_DTB
+- bool "vmlinux.bin"
++ bool "vmlinux.bin or vmlinuz.bin"
+ help
+ With this option, the boot code will look for a device tree binary
+- DTB) appended to raw vmlinux.bin (without decompressor).
++ DTB) appended to raw vmlinux.bin or vmlinuz.bin.
+ (e.g. cat vmlinux.bin <filename>.dtb > vmlinux_w_dtb).
+
+ This is meant as a backward compatibility convenience for those
+@@ -2767,24 +2767,6 @@ choice
+ look like a DTB header after a reboot if no actual DTB is appended
+ to vmlinux.bin. Do not leave this option active in a production kernel
+ if you don't intend to always append a DTB.
+-
+- config MIPS_ZBOOT_APPENDED_DTB
+- bool "vmlinuz.bin"
+- depends on SYS_SUPPORTS_ZBOOT
+- help
+- With this option, the boot code will look for a device tree binary
+- DTB) appended to raw vmlinuz.bin (with decompressor).
+- (e.g. cat vmlinuz.bin <filename>.dtb > vmlinuz_w_dtb).
+-
+- This is meant as a backward compatibility convenience for those
+- systems with a bootloader that can't be upgraded to accommodate
+- the documented boot protocol using a device tree.
+-
+- Beware that there is very little in terms of protection against
+- this option being confused by leftover garbage in memory that might
+- look like a DTB header after a reboot if no actual DTB is appended
+- to vmlinuz.bin. Do not leave this option active in a production kernel
+- if you don't intend to always append a DTB.
+ endchoice
+
+ choice
+--- a/arch/mips/boot/compressed/decompress.c
++++ b/arch/mips/boot/compressed/decompress.c
+@@ -14,6 +14,7 @@
+ #include <linux/types.h>
+ #include <linux/kernel.h>
+ #include <linux/string.h>
++#include <linux/libfdt.h>
+
+ #include <asm/addrspace.h>
+
+@@ -36,6 +37,8 @@ extern void puthex(unsigned long long va
+ #define puthex(val) do {} while (0)
+ #endif
+
++extern char __appended_dtb[];
++
+ void error(char *x)
+ {
+ puts("\n\n");
+@@ -114,6 +117,20 @@ void decompress_kernel(unsigned long boo
+ __decompress((char *)zimage_start, zimage_size, 0, 0,
+ (void *)VMLINUX_LOAD_ADDRESS_ULL, 0, 0, error);
+
++ if (IS_ENABLED(CONFIG_MIPS_RAW_APPENDED_DTB) &&
++ fdt_magic((void *)&__appended_dtb) == FDT_MAGIC) {
++ unsigned int image_size, dtb_size;
++
++ dtb_size = fdt_totalsize((void *)&__appended_dtb);
++
++ /* last four bytes is always image size in little endian */
++ image_size = le32_to_cpup((void *)&__image_end - 4);
++
++ /* copy dtb to where the booted kernel will expect it */
++ memcpy((void *)VMLINUX_LOAD_ADDRESS_ULL + image_size,
++ __appended_dtb, dtb_size);
++ }
++
+ /* FIXME: should we flush cache here? */
+ puts("Now, booting the kernel...\n");
+ }
+--- a/arch/mips/boot/compressed/head.S
++++ b/arch/mips/boot/compressed/head.S
+@@ -25,22 +25,6 @@ start:
+ move s2, a2
+ move s3, a3
+
+-#ifdef CONFIG_MIPS_ZBOOT_APPENDED_DTB
+- PTR_LA t0, __appended_dtb
+-#ifdef CONFIG_CPU_BIG_ENDIAN
+- li t1, 0xd00dfeed
+-#else
+- li t1, 0xedfe0dd0
+-#endif
+- lw t2, (t0)
+- bne t1, t2, not_found
+- nop
+-
+- move s1, t0
+- PTR_LI s0, -2
+-not_found:
+-#endif
+-
+ /* Clear BSS */
+ PTR_LA a0, _edata
+ PTR_LA a2, _end
--- /dev/null
+From 15f37e1588920e010f20b53f04af94e91b8ee714 Mon Sep 17 00:00:00 2001
+From: Jonas Gorski <jogo@openwrt.org>
+Date: Mon, 20 Jun 2016 11:27:37 +0200
+Subject: [PATCH] MIPS: store the appended dtb address in a variable
+
+Instead of rewriting the arguments to match the UHI spec, store the
+address of a appended or UHI supplied dtb in fw_supplied_dtb.
+
+That way the original bootloader arugments are kept intact while still
+making the use of an appended dtb invisible for mach code.
+
+Mach code can still find out if it is an appended dtb by comparing
+fw_arg1 with fw_supplied_dtb.
+
+Signed-off-by: Jonas Gorski <jogo@openwrt.org>
+Cc: Kevin Cernekee <cernekee@gmail.com>
+Cc: Florian Fainelli <f.fainelli@gmail.com>
+Cc: John Crispin <john@phrozen.org>
+Cc: Paul Burton <paul.burton@imgtec.com>
+Cc: James Hogan <james.hogan@imgtec.com>
+Cc: Alban Bedel <albeu@free.fr>
+Cc: Daniel Gimpelevich <daniel@gimpelevich.san-francisco.ca.us>
+Cc: Antony Pavlov <antonynpavlov@gmail.com>
+Cc: linux-mips@linux-mips.org
+Patchwork: https://patchwork.linux-mips.org/patch/13699/
+Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
+---
+ arch/mips/ath79/setup.c | 4 ++--
+ arch/mips/bmips/setup.c | 4 ++--
+ arch/mips/include/asm/bootinfo.h | 4 ++++
+ arch/mips/kernel/head.S | 21 ++++++++++++++-------
+ arch/mips/kernel/setup.c | 4 ++++
+ arch/mips/lantiq/prom.c | 4 ++--
+ arch/mips/pic32/pic32mzda/init.c | 4 ++--
+ 7 files changed, 30 insertions(+), 15 deletions(-)
+
+--- a/arch/mips/ath79/setup.c
++++ b/arch/mips/ath79/setup.c
+@@ -207,6 +207,8 @@ void __init plat_mem_setup(void)
+ fdt_start = fw_getenvl("fdt_start");
+ if (fdt_start)
+ __dt_setup_arch((void *)KSEG0ADDR(fdt_start));
++ else if (fw_passed_dtb)
++ __dt_setup_arch((void *)KSEG0ADDR(fw_passed_dtb));
+ #ifdef CONFIG_BUILTIN_DTB
+ else
+ __dt_setup_arch(__dtb_start);
+--- a/arch/mips/bmips/setup.c
++++ b/arch/mips/bmips/setup.c
+@@ -149,8 +149,8 @@ void __init plat_mem_setup(void)
+ /* intended to somewhat resemble ARM; see Documentation/arm/Booting */
+ if (fw_arg0 == 0 && fw_arg1 == 0xffffffff)
+ dtb = phys_to_virt(fw_arg2);
+- else if (fw_arg0 == -2) /* UHI interface */
+- dtb = (void *)fw_arg1;
++ else if (fw_passed_dtb) /* UHI interface */
++ dtb = (void *)fw_passed_dtb;
+ else if (__dtb_start != __dtb_end)
+ dtb = (void *)__dtb_start;
+ else
+--- a/arch/mips/include/asm/bootinfo.h
++++ b/arch/mips/include/asm/bootinfo.h
+@@ -127,6 +127,10 @@ extern char arcs_cmdline[COMMAND_LINE_SI
+ */
+ extern unsigned long fw_arg0, fw_arg1, fw_arg2, fw_arg3;
+
++#ifdef CONFIG_USE_OF
++extern unsigned long fw_passed_dtb;
++#endif
++
+ /*
+ * Platform memory detection hook called by setup_arch
+ */
+--- a/arch/mips/kernel/head.S
++++ b/arch/mips/kernel/head.S
+@@ -94,21 +94,24 @@ NESTED(kernel_entry, 16, sp) # kernel
+ jr t0
+ 0:
+
++#ifdef CONFIG_USE_OF
+ #ifdef CONFIG_MIPS_RAW_APPENDED_DTB
+- PTR_LA t0, __appended_dtb
++ PTR_LA t2, __appended_dtb
+
+ #ifdef CONFIG_CPU_BIG_ENDIAN
+ li t1, 0xd00dfeed
+ #else
+ li t1, 0xedfe0dd0
+ #endif
+- lw t2, (t0)
+- bne t1, t2, not_found
+- nop
+-
+- move a1, t0
+- PTR_LI a0, -2
+-not_found:
++ lw t0, (t2)
++ beq t0, t1, dtb_found
++#endif
++ li t1, -2
++ beq a0, t1, dtb_found
++ move t2, a1
++
++ li t2, 0
++dtb_found:
+ #endif
+ PTR_LA t0, __bss_start # clear .bss
+ LONG_S zero, (t0)
+@@ -123,6 +126,10 @@ not_found:
+ LONG_S a2, fw_arg2
+ LONG_S a3, fw_arg3
+
++#ifdef CONFIG_USE_OF
++ LONG_S t2, fw_passed_dtb
++#endif
++
+ MTC0 zero, CP0_CONTEXT # clear context register
+ PTR_LA $28, init_thread_union
+ /* Set the SP after an empty pt_regs. */
+--- a/arch/mips/kernel/setup.c
++++ b/arch/mips/kernel/setup.c
+@@ -814,6 +814,10 @@ void __init setup_arch(char **cmdline_p)
+ unsigned long kernelsp[NR_CPUS];
+ unsigned long fw_arg0, fw_arg1, fw_arg2, fw_arg3;
+
++#ifdef CONFIG_USE_OF
++unsigned long fw_passed_dtb;
++#endif
++
+ #ifdef CONFIG_DEBUG_FS
+ struct dentry *mips_debugfs_dir;
+ static int __init debugfs_mips(void)
drivers/usb/gadget/udc/net2280.h | 1 +
3 files changed, 34 insertions(+), 22 deletions(-)
-diff --git a/drivers/usb/gadget/udc/Kconfig b/drivers/usb/gadget/udc/Kconfig
-index 7c28941..658b8da 100644
--- a/drivers/usb/gadget/udc/Kconfig
+++ b/drivers/usb/gadget/udc/Kconfig
-@@ -312,7 +312,7 @@ config USB_NET2272_DMA
+@@ -298,7 +298,7 @@ config USB_NET2272_DMA
If unsure, say "N" here. The driver works fine in PIO mode.
config USB_NET2280
depends on PCI
help
NetChip 2280 / 2282 is a PCI based USB peripheral controller which
-@@ -322,6 +322,8 @@ config USB_NET2280
+@@ -308,6 +308,8 @@ config USB_NET2280
(for control transfers) and several endpoints with dedicated
functions.
PLX 3380 / 3382 is a PCIe based USB peripheral controller which
supports full, high speed USB 2.0 and super speed USB 3.0
data transfers.
-diff --git a/drivers/usb/gadget/udc/net2280.c b/drivers/usb/gadget/udc/net2280.c
-index c894b94..614ab951 100644
--- a/drivers/usb/gadget/udc/net2280.c
+++ b/drivers/usb/gadget/udc/net2280.c
-@@ -211,7 +211,7 @@ net2280_enable(struct usb_ep *_ep, const struct usb_endpoint_descriptor *desc)
+@@ -211,7 +211,7 @@ net2280_enable(struct usb_ep *_ep, const
goto print_err;
}
if ((desc->bEndpointAddress & 0x0f) >= 0x0c) {
ret = -EDOM;
goto print_err;
-@@ -245,7 +245,7 @@ net2280_enable(struct usb_ep *_ep, const struct usb_endpoint_descriptor *desc)
+@@ -245,7 +245,7 @@ net2280_enable(struct usb_ep *_ep, const
/* set type, direction, address; reset fifo counters */
writel(BIT(FIFO_FLUSH), &ep->regs->ep_stat);
tmp = readl(&ep->cfg->ep_cfg);
/* If USB ep number doesn't match hardware ep number */
if ((tmp & 0xf) != usb_endpoint_num(desc)) {
-@@ -316,7 +316,7 @@ net2280_enable(struct usb_ep *_ep, const struct usb_endpoint_descriptor *desc)
+@@ -316,7 +316,7 @@ net2280_enable(struct usb_ep *_ep, const
BIT(CLEAR_NAK_OUT_PACKETS_MODE), &ep->regs->ep_rsp);
}
ep_clear_seqnum(ep);
writel(tmp, &ep->cfg->ep_cfg);
-@@ -527,7 +527,7 @@ static int net2280_disable(struct usb_ep *_ep)
+@@ -527,7 +527,7 @@ static int net2280_disable(struct usb_ep
spin_lock_irqsave(&ep->dev->lock, flags);
nuke(ep);
ep_reset_338x(ep->dev->regs, ep);
else
ep_reset_228x(ep->dev->regs, ep);
-@@ -862,7 +862,7 @@ static void start_queue(struct net2280_ep *ep, u32 dmactl, u32 td_dma)
+@@ -862,7 +862,7 @@ static void start_queue(struct net2280_e
writel(readl(&dma->dmastat), &dma->dmastat);
writel(td_dma, &dma->dmadesc);
dmactl |= BIT(DMA_REQUEST_OUTSTANDING);
writel(dmactl, &dma->dmactl);
-@@ -1046,7 +1046,7 @@ net2280_queue(struct usb_ep *_ep, struct usb_request *_req, gfp_t gfp_flags)
+@@ -1046,7 +1046,7 @@ net2280_queue(struct usb_ep *_ep, struct
/* kickstart this i/o queue? */
if (list_empty(&ep->queue) && !ep->stopped &&
(readl(&ep->regs->ep_rsp) & BIT(CLEAR_ENDPOINT_HALT)))) {
/* use DMA if the endpoint supports it, else pio */
-@@ -1169,7 +1169,7 @@ static void scan_dma_completions(struct net2280_ep *ep)
+@@ -1169,7 +1169,7 @@ static void scan_dma_completions(struct
break;
} else if (!ep->is_in &&
(req->req.length % ep->ep.maxpacket) &&
tmp = readl(&ep->regs->ep_stat);
/* AVOID TROUBLE HERE by not issuing short reads from
-@@ -1367,7 +1367,7 @@ net2280_set_halt_and_wedge(struct usb_ep *_ep, int value, int wedged)
+@@ -1367,7 +1367,7 @@ net2280_set_halt_and_wedge(struct usb_ep
ep->wedged = 1;
} else {
clear_halt(ep);
!list_empty(&ep->queue) && ep->td_dma)
restart_dma(ep);
ep->wedged = 0;
-@@ -2394,7 +2394,7 @@ static int net2280_start(struct usb_gadget *_gadget,
+@@ -2394,7 +2394,7 @@ static int net2280_start(struct usb_gadg
*/
net2280_led_active(dev, 1);
defect7374_enable_data_eps_zero(dev);
ep0_start(dev);
-@@ -3063,7 +3063,7 @@ static void handle_stat0_irqs(struct net2280 *dev, u32 stat)
+@@ -3063,7 +3063,7 @@ static void handle_stat0_irqs(struct net
}
ep->stopped = 0;
dev->protocol_stall = 0;
if (ep->dev->quirks & PLX_2280)
tmp = BIT(FIFO_OVERFLOW) |
BIT(FIFO_UNDERFLOW);
-@@ -3090,7 +3090,7 @@ static void handle_stat0_irqs(struct net2280 *dev, u32 stat)
+@@ -3090,7 +3090,7 @@ static void handle_stat0_irqs(struct net
cpu_to_le32s(&u.raw[0]);
cpu_to_le32s(&u.raw[1]);
defect7374_workaround(dev, u.r);
tmp = 0;
-@@ -3173,7 +3173,7 @@ static void handle_stat0_irqs(struct net2280 *dev, u32 stat)
+@@ -3173,7 +3173,7 @@ static void handle_stat0_irqs(struct net
} else {
ep_vdbg(dev, "%s clear halt\n", e->ep.name);
clear_halt(e);
!list_empty(&e->queue) && e->td_dma)
restart_dma(e);
}
-@@ -3195,7 +3195,7 @@ static void handle_stat0_irqs(struct net2280 *dev, u32 stat)
+@@ -3195,7 +3195,7 @@ static void handle_stat0_irqs(struct net
if (e->ep.name == ep0name)
goto do_stall;
set_halt(e);
u32 r_dmacount = readl(&dma->dmacount);
if (!ep->is_in && (r_dmacount & 0x00FFFFFF) &&
(tmp & BIT(DMA_TRANSACTION_DONE_INTERRUPT)))
-@@ -3468,7 +3468,7 @@ static irqreturn_t net2280_irq(int irq, void *_dev)
+@@ -3468,7 +3468,7 @@ static irqreturn_t net2280_irq(int irq,
/* control requests and PIO */
handle_stat0_irqs(dev, readl(&dev->regs->irqstat0));
/* re-enable interrupt to trigger any possible new interrupt */
u32 pciirqenb1 = readl(&dev->regs->pciirqenb1);
writel(pciirqenb1 & 0x7FFFFFFF, &dev->regs->pciirqenb1);
-@@ -3513,7 +3513,7 @@ static void net2280_remove(struct pci_dev *pdev)
+@@ -3513,7 +3513,7 @@ static void net2280_remove(struct pci_de
}
if (dev->got_irq)
free_irq(pdev->irq, dev);
pci_disable_msi(pdev);
if (dev->regs)
iounmap(dev->regs);
-@@ -3593,7 +3593,7 @@ static int net2280_probe(struct pci_dev *pdev, const struct pci_device_id *id)
+@@ -3593,7 +3593,7 @@ static int net2280_probe(struct pci_dev
dev->dep = (struct net2280_dep_regs __iomem *) (base + 0x0200);
dev->epregs = (struct net2280_ep_regs __iomem *) (base + 0x0300);
u32 fsmvalue;
u32 usbstat;
dev->usb_ext = (struct usb338x_usb_ext_regs __iomem *)
-@@ -3637,7 +3637,7 @@ static int net2280_probe(struct pci_dev *pdev, const struct pci_device_id *id)
+@@ -3637,7 +3637,7 @@ static int net2280_probe(struct pci_dev
goto done;
}
if (pci_enable_msi(pdev))
ep_err(dev, "Failed to enable MSI mode\n");
-@@ -3755,10 +3755,19 @@ static const struct pci_device_id pci_ids[] = { {
- .class = PCI_CLASS_SERIAL_USB_DEVICE,
+@@ -3755,10 +3755,19 @@ static const struct pci_device_id pci_id
+ .class = ((PCI_CLASS_SERIAL_USB << 8) | 0xfe),
.class_mask = ~0,
.vendor = PCI_VENDOR_ID_PLX,
+ .device = 0x2380,
+ .driver_data = PLX_PCIE | PLX_SUPERSPEED,
},
{
- .class = PCI_CLASS_SERIAL_USB_DEVICE,
-@@ -3767,7 +3776,7 @@ static const struct pci_device_id pci_ids[] = { {
+ .class = ((PCI_CLASS_SERIAL_USB << 8) | 0xfe),
+@@ -3767,7 +3776,7 @@ static const struct pci_device_id pci_id
.device = 0x3382,
.subvendor = PCI_ANY_ID,
.subdevice = PCI_ANY_ID,
},
{ /* end: all zeroes */ }
};
-diff --git a/drivers/usb/gadget/udc/net2280.h b/drivers/usb/gadget/udc/net2280.h
-index 0d32052..2736a95 100644
--- a/drivers/usb/gadget/udc/net2280.h
+++ b/drivers/usb/gadget/udc/net2280.h
-@@ -47,6 +47,7 @@ set_idx_reg(struct net2280_regs __iomem *regs, u32 index, u32 value)
+@@ -47,6 +47,7 @@ set_idx_reg(struct net2280_regs __iomem
#define PLX_LEGACY BIT(0)
#define PLX_2280 BIT(1)
#define PLX_SUPERSPEED BIT(2)
#define REG_DIAG 0x0
#define RETRY_COUNTER 16
---
-1.9.1
-
config CEVT_BCM1480
bool
-@@ -2810,6 +2807,18 @@ choice
+@@ -2792,6 +2789,18 @@ choice
bool "Bootloader kernel arguments if available"
endchoice
--- /dev/null
+From 15f37e1588920e010f20b53f04af94e91b8ee714 Mon Sep 17 00:00:00 2001
+From: Jonas Gorski <jogo@openwrt.org>
+Date: Mon, 20 Jun 2016 11:27:37 +0200
+Subject: [PATCH] MIPS: store the appended dtb address in a variable
+
+Instead of rewriting the arguments to match the UHI spec, store the
+address of a appended or UHI supplied dtb in fw_supplied_dtb.
+
+That way the original bootloader arugments are kept intact while still
+making the use of an appended dtb invisible for mach code.
+
+Mach code can still find out if it is an appended dtb by comparing
+fw_arg1 with fw_supplied_dtb.
+
+Signed-off-by: Jonas Gorski <jogo@openwrt.org>
+Cc: Kevin Cernekee <cernekee@gmail.com>
+Cc: Florian Fainelli <f.fainelli@gmail.com>
+Cc: John Crispin <john@phrozen.org>
+Cc: Paul Burton <paul.burton@imgtec.com>
+Cc: James Hogan <james.hogan@imgtec.com>
+Cc: Alban Bedel <albeu@free.fr>
+Cc: Daniel Gimpelevich <daniel@gimpelevich.san-francisco.ca.us>
+Cc: Antony Pavlov <antonynpavlov@gmail.com>
+Cc: linux-mips@linux-mips.org
+Patchwork: https://patchwork.linux-mips.org/patch/13699/
+Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
+---
+ arch/mips/ath79/setup.c | 4 ++--
+ arch/mips/bmips/setup.c | 4 ++--
+ arch/mips/include/asm/bootinfo.h | 4 ++++
+ arch/mips/kernel/head.S | 21 ++++++++++++++-------
+ arch/mips/kernel/setup.c | 4 ++++
+ arch/mips/lantiq/prom.c | 4 ++--
+ arch/mips/pic32/pic32mzda/init.c | 4 ++--
+ 7 files changed, 30 insertions(+), 15 deletions(-)
+
+--- a/arch/mips/lantiq/prom.c
++++ b/arch/mips/lantiq/prom.c
+@@ -74,8 +74,8 @@ void __init plat_mem_setup(void)
+
+ set_io_port_base((unsigned long) KSEG1);
+
+- if (fw_arg0 == -2) /* UHI interface */
+- dtb = (void *)fw_arg1;
++ if (fw_passed_dtb) /* UHI interface */
++ dtb = (void *)fw_passed_dtb;
+ else if (__dtb_start != __dtb_end)
+ dtb = (void *)__dtb_start;
+ else