ARM: tegra: Implement cboot_save_boot_params() in C

This is easier to deal with and works just as well for this simple
function.

Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Tom Warren <twarren@nvidia.com>

1 files changed, 12 insertions, 0 deletions

diff --git a/arch/arm/mach-tegra/cboot.c b/arch/arm/mach-tegra/cboot.c
index 3ebf7b0555..a302ca45f3 100644
--- a/arch/arm/mach-tegra/cboot.c
+++ b/arch/arm/mach-tegra/cboot.c
@@ -52,6 +52,18 @@ static u64 ram_top __attribute__((section(".data")));
 /* The base address of the region of RAM that ends at ram_top */
 static u64 region_base __attribute__((section(".data")));
 
+/*
+ * Explicitly put this in the .data section because it is written before the
+ * .bss section is zeroed out but it needs to persist.
+ */
+unsigned long cboot_boot_x0 __attribute__((section(".data")));
+
+void cboot_save_boot_params(unsigned long x0, unsigned long x1,
+			    unsigned long x2, unsigned long x3)
+{
+	cboot_boot_x0 = x0;
+}
+
 int cboot_dram_init(void)
 {
 	unsigned int na, ns;