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authorKumar Gala <galak@kernel.crashing.org>2009-09-11 13:52:45 -0500
committerKumar Gala <galak@kernel.crashing.org>2009-09-15 21:30:09 -0500
commit9f00409a9d04cf533305531da32437130802f3a3 (patch)
tree0f1d7791cc318282fcf78e46b637ea9aeadedb3d /cpu/mpc85xx/cpu_init_early.c
parent0456dbf3475d0aec42873a967ac97ed81f376119 (diff)
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ppc/85xx: Split out cpu_init_early into its own file for NAND_SPL
By pulling out cpu_init_early we can build just it and not all of cpu_init for NAND_SPL. Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Diffstat (limited to 'cpu/mpc85xx/cpu_init_early.c')
-rw-r--r--cpu/mpc85xx/cpu_init_early.c76
1 files changed, 76 insertions, 0 deletions
diff --git a/cpu/mpc85xx/cpu_init_early.c b/cpu/mpc85xx/cpu_init_early.c
new file mode 100644
index 0000000..7886f86
--- /dev/null
+++ b/cpu/mpc85xx/cpu_init_early.c
@@ -0,0 +1,76 @@
+/*
+ * 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;
+
+/* 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)
+ {
+ u32 temp;
+ volatile u32 *ccsr_virt =
+ (volatile u32 *)(CONFIG_SYS_CCSRBAR + 0x1000);
+
+ mas0 = MAS0_TLBSEL(0) | MAS0_ESEL(1);
+ /* mas1 is the same as above */
+ mas2 = FSL_BOOKE_MAS2((u32)ccsr_virt, 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);
+
+ temp = in_be32(ccsr_virt);
+ out_be32(ccsr_virt, CONFIG_SYS_CCSRBAR_PHYS >> 12);
+ temp = in_be32((volatile u32 *)CONFIG_SYS_CCSRBAR);
+ }
+#endif
+
+ init_laws();
+ invalidate_tlb(0);
+ init_tlbs();
+}