arm: socfpga: Fix: Compile MCR instruction on ARM 32-bit only

[u-boot] / arch / arm / mach-socfpga / board.c

diff --git a/arch/arm/mach-socfpga/board.c b/arch/arm/mach-socfpga/board.c
index 6e0b4b3c4e6c4834f8019ff8c3841a9b371cded4..26d84be6e963d9b3085a6f27d13d3b70585d7b45 100644 (file)
--- a/arch/arm/mach-socfpga/board.c
+++ b/arch/arm/mach-socfpga/board.c
@@ -10,6 +10,7 @@
 #include <fdtdec.h>
 #include <asm/arch/reset_manager.h>
 #include <asm/arch/clock_manager.h>
+#include <asm/arch/misc.h>
 #include <asm/io.h>
 
 #include <usb.h>
@@ -17,7 +18,20 @@
 
 DECLARE_GLOBAL_DATA_PTR;
 
-void s_init(void) {}
+void s_init(void) {
+#ifndef CONFIG_ARM64
+       /*
+        * Preconfigure ACTLR, make sure Write Full Line of Zeroes is disabled.
+        * This is optional on CycloneV / ArriaV.
+        * This is mandatory on Arria10, otherwise Linux refuses to boot.
+        */
+       asm volatile(
+               "mcr p15, 0, %0, c1, c0, 1\n"
+               "isb\n"
+               "dsb\n"
+       ::"r"(0x0));
+#endif
+}
 
 /*
  * Miscellaneous platform dependent initialisations
@@ -30,6 +44,9 @@ int board_init(void)
 #if defined(CONFIG_TARGET_SOCFPGA_ARRIA10)
        /* configuring the clock based on handoff */
        cm_basic_init(gd->fdt_blob);
+
+       /* Add device descriptor to FPGA device table */
+       socfpga_fpga_add();
 #endif
 
        return 0;