1 files changed, 59 insertions, 0 deletions
diff --git a/arch/powerpc/cpu/mpc85xx/spl_minimal.c b/arch/powerpc/cpu/mpc85xx/spl_minimal.c
new file mode 100644
index 0000000000..c6b9cd0acc
--- /dev/null
+++ b/arch/powerpc/cpu/mpc85xx/spl_minimal.c
@@ -0,0 +1,59 @@
+/*
+ * Copyright 2009 Freescale Semiconductor, Inc.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+#include <asm/processor.h>
+#include <asm/global_data.h>
+#include <asm/fsl_ifc.h>
+#include <asm/io.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+void cpu_init_f(void)
+{
+#ifdef CONFIG_SYS_INIT_L2_ADDR
+	ccsr_l2cache_t *l2cache = (void *)CONFIG_SYS_MPC85xx_L2_ADDR;
+
+	out_be32(&l2cache->l2srbar0, CONFIG_SYS_INIT_L2_ADDR);
+
+	/* set MBECCDIS=1, SBECCDIS=1 */
+	out_be32(&l2cache->l2errdis,
+		(MPC85xx_L2ERRDIS_MBECC | MPC85xx_L2ERRDIS_SBECC));
+
+	/* set L2E=1 & L2SRAM=001 */
+	out_be32(&l2cache->l2ctl,
+		(MPC85xx_L2CTL_L2E | MPC85xx_L2CTL_L2SRAM_ENTIRE));
+#endif
+}
+
+#ifndef CONFIG_SYS_FSL_TBCLK_DIV
+#define CONFIG_SYS_FSL_TBCLK_DIV 8
+#endif
+
+void udelay(unsigned long usec)
+{
+	u32 ticks_per_usec = gd->bus_clk / (CONFIG_SYS_FSL_TBCLK_DIV * 1000000);
+	u32 ticks = ticks_per_usec * usec;
+	u32 s = mfspr(SPRN_TBRL);
+
+	while ((mfspr(SPRN_TBRL) - s) < ticks);
+}