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Diffstat (limited to 'arch/powerpc/cpu/mpc86xx/cpu_init.c')
-rw-r--r--arch/powerpc/cpu/mpc86xx/cpu_init.c190
1 files changed, 190 insertions, 0 deletions
diff --git a/arch/powerpc/cpu/mpc86xx/cpu_init.c b/arch/powerpc/cpu/mpc86xx/cpu_init.c
new file mode 100644
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+++ b/arch/powerpc/cpu/mpc86xx/cpu_init.c
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+/*
+ * Copyright 2004,2009 Freescale Semiconductor, Inc.
+ * Jeff Brown
+ * Srikanth Srinivasan (srikanth.srinivasan@freescale.com)
+ *
+ * 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
+ */
+
+/*
+ * cpu_init.c - low level cpu init
+ */
+
+#include <config.h>
+#include <common.h>
+#include <mpc86xx.h>
+#include <asm/mmu.h>
+#include <asm/fsl_law.h>
+#include <asm/mp.h>
+
+void setup_bats(void);
+
+DECLARE_GLOBAL_DATA_PTR;
+
+/*
+ * Breathe some life into the CPU...
+ *
+ * Set up the memory map
+ * initialize a bunch of registers
+ */
+
+void cpu_init_f(void)
+{
+ volatile immap_t *immap = (immap_t *)CONFIG_SYS_IMMR;
+ volatile ccsr_lbc_t *memctl = &immap->im_lbc;
+
+ /* 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 */
+ memset ((void *) gd, 0, sizeof (gd_t));
+
+#ifdef CONFIG_FSL_LAW
+ init_laws();
+#endif
+
+ setup_bats();
+
+ /* Map banks 0 and 1 to the FLASH banks 0 and 1 at preliminary
+ * addresses - these have to be modified later when FLASH size
+ * has been determined
+ */
+
+#if defined(CONFIG_SYS_OR0_REMAP)
+ memctl->or0 = CONFIG_SYS_OR0_REMAP;
+#endif
+#if defined(CONFIG_SYS_OR1_REMAP)
+ memctl->or1 = CONFIG_SYS_OR1_REMAP;
+#endif
+
+ /* now restrict to preliminary range */
+#if defined(CONFIG_SYS_BR0_PRELIM) && defined(CONFIG_SYS_OR0_PRELIM)
+ memctl->br0 = CONFIG_SYS_BR0_PRELIM;
+ memctl->or0 = CONFIG_SYS_OR0_PRELIM;
+#endif
+
+#if defined(CONFIG_SYS_BR1_PRELIM) && defined(CONFIG_SYS_OR1_PRELIM)
+ memctl->or1 = CONFIG_SYS_OR1_PRELIM;
+ memctl->br1 = CONFIG_SYS_BR1_PRELIM;
+#endif
+
+#if defined(CONFIG_SYS_BR2_PRELIM) && defined(CONFIG_SYS_OR2_PRELIM)
+ memctl->or2 = CONFIG_SYS_OR2_PRELIM;
+ memctl->br2 = CONFIG_SYS_BR2_PRELIM;
+#endif
+
+#if defined(CONFIG_SYS_BR3_PRELIM) && defined(CONFIG_SYS_OR3_PRELIM)
+ memctl->or3 = CONFIG_SYS_OR3_PRELIM;
+ memctl->br3 = CONFIG_SYS_BR3_PRELIM;
+#endif
+
+#if defined(CONFIG_SYS_BR4_PRELIM) && defined(CONFIG_SYS_OR4_PRELIM)
+ memctl->or4 = CONFIG_SYS_OR4_PRELIM;
+ memctl->br4 = CONFIG_SYS_BR4_PRELIM;
+#endif
+
+#if defined(CONFIG_SYS_BR5_PRELIM) && defined(CONFIG_SYS_OR5_PRELIM)
+ memctl->or5 = CONFIG_SYS_OR5_PRELIM;
+ memctl->br5 = CONFIG_SYS_BR5_PRELIM;
+#endif
+
+#if defined(CONFIG_SYS_BR6_PRELIM) && defined(CONFIG_SYS_OR6_PRELIM)
+ memctl->or6 = CONFIG_SYS_OR6_PRELIM;
+ memctl->br6 = CONFIG_SYS_BR6_PRELIM;
+#endif
+
+#if defined(CONFIG_SYS_BR7_PRELIM) && defined(CONFIG_SYS_OR7_PRELIM)
+ memctl->or7 = CONFIG_SYS_OR7_PRELIM;
+ memctl->br7 = CONFIG_SYS_BR7_PRELIM;
+#endif
+#if defined(CONFIG_FSL_DMA)
+ dma_init();
+#endif
+
+ /* enable the timebase bit in HID0 */
+ set_hid0(get_hid0() | 0x4000000);
+
+ /* enable EMCP, SYNCBE | ABE bits in HID1 */
+ set_hid1(get_hid1() | 0x80000C00);
+}
+
+/*
+ * initialize higher level parts of CPU like timers
+ */
+int cpu_init_r(void)
+{
+#if defined(CONFIG_MP)
+ setup_mp();
+#endif
+ return 0;
+}
+
+/* Set up BAT registers */
+void setup_bats(void)
+{
+#if defined(CONFIG_SYS_DBAT0U) && defined(CONFIG_SYS_DBAT0L)
+ write_bat(DBAT0, CONFIG_SYS_DBAT0U, CONFIG_SYS_DBAT0L);
+#endif
+#if defined(CONFIG_SYS_IBAT0U) && defined(CONFIG_SYS_IBAT0L)
+ write_bat(IBAT0, CONFIG_SYS_IBAT0U, CONFIG_SYS_IBAT0L);
+#endif
+ write_bat(DBAT1, CONFIG_SYS_DBAT1U, CONFIG_SYS_DBAT1L);
+ write_bat(IBAT1, CONFIG_SYS_IBAT1U, CONFIG_SYS_IBAT1L);
+ write_bat(DBAT2, CONFIG_SYS_DBAT2U, CONFIG_SYS_DBAT2L);
+ write_bat(IBAT2, CONFIG_SYS_IBAT2U, CONFIG_SYS_IBAT2L);
+ write_bat(DBAT3, CONFIG_SYS_DBAT3U, CONFIG_SYS_DBAT3L);
+ write_bat(IBAT3, CONFIG_SYS_IBAT3U, CONFIG_SYS_IBAT3L);
+ write_bat(DBAT4, CONFIG_SYS_DBAT4U, CONFIG_SYS_DBAT4L);
+ write_bat(IBAT4, CONFIG_SYS_IBAT4U, CONFIG_SYS_IBAT4L);
+ write_bat(DBAT5, CONFIG_SYS_DBAT5U, CONFIG_SYS_DBAT5L);
+ write_bat(IBAT5, CONFIG_SYS_IBAT5U, CONFIG_SYS_IBAT5L);
+ write_bat(DBAT6, CONFIG_SYS_DBAT6U, CONFIG_SYS_DBAT6L);
+ write_bat(IBAT6, CONFIG_SYS_IBAT6U, CONFIG_SYS_IBAT6L);
+ write_bat(DBAT7, CONFIG_SYS_DBAT7U, CONFIG_SYS_DBAT7L);
+ write_bat(IBAT7, CONFIG_SYS_IBAT7U, CONFIG_SYS_IBAT7L);
+
+ return;
+}
+
+#ifdef CONFIG_ADDR_MAP
+/* Initialize address mapping array */
+void init_addr_map(void)
+{
+ int i;
+ ppc_bat_t bat = DBAT0;
+ phys_size_t size;
+ unsigned long upper, lower;
+
+ for (i = 0; i < CONFIG_SYS_NUM_ADDR_MAP; i++, bat++) {
+ if (read_bat(bat, &upper, &lower) != -1) {
+ if (!BATU_VALID(upper))
+ size = 0;
+ else
+ size = BATU_SIZE(upper);
+ addrmap_set_entry(BATU_VADDR(upper), BATL_PADDR(lower),
+ size, i);
+ }
+#ifdef CONFIG_HIGH_BATS
+ /* High bats are not contiguous with low BAT numbers */
+ if (bat == DBAT3)
+ bat = DBAT4 - 1;
+#endif
+ }
+}
+#endif