arm: am57xx: cl-som-am57x: remove board support

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

diff --git a/arch/arm/mach-socfpga/board.c b/arch/arm/mach-socfpga/board.c
index 189e12a668398c02de8380dbad7558b63e05d18e..7c8c05cc3194a61f2fbf1efe07f7459eb446d39b 100644 (file)
--- a/arch/arm/mach-socfpga/board.c
+++ b/arch/arm/mach-socfpga/board.c
@@ -18,7 +18,22 @@
 
 DECLARE_GLOBAL_DATA_PTR;
 
-void s_init(void) {}
+void s_init(void) {
+#ifndef CONFIG_ARM64
+       /*
+        * Preconfigure ACTLR and CPACR, make sure Write Full Line of Zeroes
+        * is disabled in ACTLR.
+        * 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"
+               "mcr p15, 0, %0, c1, c0, 2\n"
+               "isb\n"
+               "dsb\n"
+       ::"r"(0x0));
+#endif
+}
 
 /*
  * Miscellaneous platform dependent initialisations
@@ -28,14 +43,6 @@ int board_init(void)
        /* Address of boot parameters for ATAG (if ATAG is used) */
        gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE + 0x100;
 
-#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;
 }