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Diffstat (limited to 'cpu/mpc85xx/cpu_init_nand.c')
-rw-r--r--cpu/mpc85xx/cpu_init_nand.c63
1 files changed, 63 insertions, 0 deletions
diff --git a/cpu/mpc85xx/cpu_init_nand.c b/cpu/mpc85xx/cpu_init_nand.c
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+++ b/cpu/mpc85xx/cpu_init_nand.c
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+/*
+ * 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/io.h>
+
+void cpu_init_f(void)
+{
+ ccsr_lbc_t *lbc = (void *)(CONFIG_SYS_MPC85xx_LBC_ADDR);
+
+ /*
+ * LCRR - Clock Ratio Register - set up local bus timing
+ * when needed
+ */
+ out_be32(&lbc->lcrr, LCRR_DBYP | LCRR_CLKDIV_8);
+
+#if defined(CONFIG_NAND_BR_PRELIM) && defined(CONFIG_NAND_OR_PRELIM)
+ out_be32(&lbc->br0, CONFIG_NAND_BR_PRELIM);
+ out_be32(&lbc->or0, CONFIG_NAND_OR_PRELIM);
+#else
+#error CONFIG_NAND_BR_PRELIM, CONFIG_NAND_OR_PRELIM must be defined
+#endif
+
+#if defined(CONFIG_SYS_RAMBOOT) && defined(CONFIG_SYS_INIT_L2_ADDR)
+ ccsr_l2cache_t *l2cache = (void *)CONFIG_SYS_MPC85xx_L2_ADDR;
+ char *l2srbar;
+ int i;
+
+ 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));
+
+ /* Initialize L2 SRAM to zero */
+ l2srbar = (char *)CONFIG_SYS_INIT_L2_ADDR;
+ for (i = 0; i < CONFIG_SYS_L2_SIZE; i++)
+ l2srbar[i] = 0;
+#endif
+}