1 files changed, 112 insertions, 0 deletions
diff --git a/arch/powerpc/cpu/mpc85xx/cpu_init_early.c b/arch/powerpc/cpu/mpc85xx/cpu_init_early.c
new file mode 100644
index 000000000..32aa94b61
--- /dev/null
+++ b/arch/powerpc/cpu/mpc85xx/cpu_init_early.c
@@ -0,0 +1,112 @@
+/*
+ * Copyright 2009 Freescale Semiconductor, Inc
+ *
+ * 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/mmu.h>
+#include <asm/fsl_law.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#if (CONFIG_SYS_CCSRBAR_DEFAULT != CONFIG_SYS_CCSRBAR_PHYS)
+#ifdef CONFIG_FSL_CORENET
+static void setup_ccsrbar(void)
+{
+	u32 temp;
+	volatile u32 *ccsr_virt = (volatile u32 *)(CONFIG_SYS_CCSRBAR + 0x1000);
+	volatile ccsr_local_t *ccm;
+
+	/*
+	 * We can't call set_law() because we haven't moved
+	 * CCSR yet.
+	 */
+	ccm = (void *)ccsr_virt;
+
+	out_be32(&ccm->law[0].lawbarh,
+		(u64)CONFIG_SYS_CCSRBAR_PHYS >> 32);
+	out_be32(&ccm->law[0].lawbarl, (u32)CONFIG_SYS_CCSRBAR_PHYS);
+	out_be32(&ccm->law[0].lawar,
+		LAW_EN | (0x1e << 20) | LAW_SIZE_4K);
+
+	in_be32((u32 *)(ccsr_virt + 0));
+	in_be32((u32 *)(ccsr_virt + 1));
+	isync();
+
+	ccm = (void *)CONFIG_SYS_CCSRBAR;
+	/* Now use the temporary LAW to move CCSR */
+	out_be32(&ccm->ccsrbarh, (u64)CONFIG_SYS_CCSRBAR_PHYS >> 32);
+	out_be32(&ccm->ccsrbarl, (u32)CONFIG_SYS_CCSRBAR_PHYS);
+	out_be32(&ccm->ccsrar, CCSRAR_C);
+	temp = in_be32(&ccm->ccsrar);
+	disable_law(0);
+}
+#else
+static void setup_ccsrbar(void)
+{
+	u32 temp;
+	volatile u32 *ccsr_virt = (volatile u32 *)(CONFIG_SYS_CCSRBAR + 0x1000);
+
+	temp = in_be32(ccsr_virt);
+	out_be32(ccsr_virt, CONFIG_SYS_CCSRBAR_PHYS >> 12);
+	temp = in_be32((volatile u32 *)CONFIG_SYS_CCSRBAR);
+}
+#endif
+#endif
+
+/* We run cpu_init_early_f in AS = 1 */
+void cpu_init_early_f(void)
+{
+	u32 mas0, mas1, mas2, mas3, mas7;
+	int i;
+
+	/* Pointer is writable since we allocated a register for it */
+	gd = (gd_t *) (CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_GBL_DATA_OFFSET);
+
+	/*
+	 * Clear initial global data
+	 *   we don't use memset so we can share this code with NAND_SPL
+	 */
+	for (i = 0; i < sizeof(gd_t); i++)
+		((char *)gd)[i] = 0;
+
+	mas0 = MAS0_TLBSEL(0) | MAS0_ESEL(0);
+	mas1 = MAS1_VALID | MAS1_TID(0) | MAS1_TS | MAS1_TSIZE(BOOKE_PAGESZ_4K);
+	mas2 = FSL_BOOKE_MAS2(CONFIG_SYS_CCSRBAR, MAS2_I|MAS2_G);
+	mas3 = FSL_BOOKE_MAS3(CONFIG_SYS_CCSRBAR_PHYS, 0, MAS3_SW|MAS3_SR);
+	mas7 = FSL_BOOKE_MAS7(CONFIG_SYS_CCSRBAR_PHYS);
+
+	write_tlb(mas0, mas1, mas2, mas3, mas7);
+
+	/* set up CCSR if we want it moved */
+#if (CONFIG_SYS_CCSRBAR_DEFAULT != CONFIG_SYS_CCSRBAR_PHYS)
+	mas0 = MAS0_TLBSEL(0) | MAS0_ESEL(1);
+	/* mas1 is the same as above */
+	mas2 = FSL_BOOKE_MAS2(CONFIG_SYS_CCSRBAR + 0x1000, MAS2_I|MAS2_G);
+	mas3 = FSL_BOOKE_MAS3(CONFIG_SYS_CCSRBAR_DEFAULT, 0, MAS3_SW|MAS3_SR);
+	mas7 = FSL_BOOKE_MAS7(CONFIG_SYS_CCSRBAR_DEFAULT);
+
+	write_tlb(mas0, mas1, mas2, mas3, mas7);
+
+	setup_ccsrbar();
+#endif
+
+	init_laws();
+	invalidate_tlb(0);
+	init_tlbs();
+}