Drop the unused arguments from setup(), passing only the fdt.
This allows setup() to be more easily shared with arm64.

Signed-off-by: Andrew Jones <[email protected]>
---
 arm/cstart.S    | 12 ++++++++++--
 lib/arm/setup.c |  3 +--
 2 files changed, 11 insertions(+), 4 deletions(-)

diff --git a/arm/cstart.S b/arm/cstart.S
index 1e3c3a32375fd..da496e9eae7e0 100644
--- a/arm/cstart.S
+++ b/arm/cstart.S
@@ -19,15 +19,23 @@ start:
        /*
         * bootloader params are in r0-r2
         * See the kernel doc Documentation/arm/Booting
+        *   r0 = 0
+        *   r1 = machine type number
+        *   r2 = physical address of the dtb
+        *
+        * As we have no need for r0's nor r1's value, then
+        * put the dtb in r0. This allows setup to be consistent
+        * with arm64.
         */
        ldr     sp, =stacktop
-       push    {r0-r3}
+       mov     r0, r2
+       push    {r0-r1}
 
        /* set up vector table and mode stacks */
        bl      exceptions_init
 
        /* complete setup */
-       pop     {r0-r3}
+       pop     {r0-r1}
        bl      setup
 
        /* run the test */
diff --git a/lib/arm/setup.c b/lib/arm/setup.c
index 9d2094da8a29c..8f58802e958ac 100644
--- a/lib/arm/setup.c
+++ b/lib/arm/setup.c
@@ -62,8 +62,7 @@ static void mem_init(phys_addr_t freemem_start)
        mmu_enable_idmap();
 }
 
-void setup(unsigned long arg __unused, unsigned long id __unused,
-          const void *fdt)
+void setup(const void *fdt)
 {
        const char *bootargs;
        u32 fdt_size;
-- 
1.9.3

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