ColdFire: Add M54455EVB for MCF5445x
Signed-off-by: TsiChungLiew <Tsi-Chung.Liew@freescale.com>
diff --git a/cpu/mcf5445x/start.S b/cpu/mcf5445x/start.S
new file mode 100644
index 0000000..cd989ab
--- /dev/null
+++ b/cpu/mcf5445x/start.S
@@ -0,0 +1,388 @@
+/*
+ * Copyright (C) 2003 Josef Baumgartner <josef.baumgartner@telex.de>
+ * Based on code from Bernhard Kuhn <bkuhn@metrowerks.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
+ */
+
+#include <config.h>
+#include "version.h"
+
+#ifndef CONFIG_IDENT_STRING
+#define CONFIG_IDENT_STRING ""
+#endif
+
+/* last three long word reserved for cache status */
+#define CACR_STATUS (CFG_INIT_RAM_ADDR+CFG_INIT_RAM_END-12)
+#define ICACHE_STATUS (CFG_INIT_RAM_ADDR+CFG_INIT_RAM_END- 8)
+#define DCACHE_STATUS (CFG_INIT_RAM_ADDR+CFG_INIT_RAM_END- 4)
+
+#define _START _start
+#define _FAULT _fault
+
+#define SAVE_ALL \
+ move.w #0x2700,%sr; /* disable intrs */ \
+ subl #60,%sp; /* space for 15 regs */ \
+ moveml %d0-%d7/%a0-%a6,%sp@;
+
+#define RESTORE_ALL \
+ moveml %sp@,%d0-%d7/%a0-%a6; \
+ addl #60,%sp; /* space for 15 regs */ \
+ rte;
+
+.text
+/*
+ * Vector table. This is used for initial platform startup.
+ * These vectors are to catch any un-intended traps.
+ */
+_vectors:
+
+INITSP: .long 0x00000000 /* Initial SP */
+INITPC: .long _START /* Initial PC */
+vector02: .long _FAULT /* Access Error */
+vector03: .long _FAULT /* Address Error */
+vector04: .long _FAULT /* Illegal Instruction */
+vector05: .long _FAULT /* Reserved */
+vector06: .long _FAULT /* Reserved */
+vector07: .long _FAULT /* Reserved */
+vector08: .long _FAULT /* Privilege Violation */
+vector09: .long _FAULT /* Trace */
+vector0A: .long _FAULT /* Unimplemented A-Line */
+vector0B: .long _FAULT /* Unimplemented F-Line */
+vector0C: .long _FAULT /* Debug Interrupt */
+vector0D: .long _FAULT /* Reserved */
+vector0E: .long _FAULT /* Format Error */
+vector0F: .long _FAULT /* Unitialized Int. */
+
+/* Reserved */
+vector10_17:
+.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
+
+vector18: .long _FAULT /* Spurious Interrupt */
+vector19: .long _FAULT /* Autovector Level 1 */
+vector1A: .long _FAULT /* Autovector Level 2 */
+vector1B: .long _FAULT /* Autovector Level 3 */
+vector1C: .long _FAULT /* Autovector Level 4 */
+vector1D: .long _FAULT /* Autovector Level 5 */
+vector1E: .long _FAULT /* Autovector Level 6 */
+vector1F: .long _FAULT /* Autovector Level 7 */
+
+/* TRAP #0 - #15 */
+vector20_2F:
+.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
+.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
+
+/* Reserved */
+vector30_3F:
+.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
+.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
+
+vector64_127:
+.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
+.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
+.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
+.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
+.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
+.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
+.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
+.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
+
+vector128_191:
+.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
+.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
+.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
+.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
+.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
+.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
+.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
+.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
+
+vector192_255:
+.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
+.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
+.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
+.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
+.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
+.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
+.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
+.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
+
+ .text
+
+ .globl _start
+_start:
+ nop
+ nop
+ move.w #0x2700,%sr /* Mask off Interrupt */
+
+ /* Set vector base register at the beginning of the Flash */
+ move.l #CFG_FLASH_BASE, %d0
+ movec %d0, %VBR
+
+ move.l #(CFG_INIT_RAM_ADDR + CFG_INIT_RAM_CTRL), %d0
+ movec %d0, %RAMBAR0
+
+ /* initialize general use internal ram */
+ move.l #0, %d0
+ move.l #(CACR_STATUS), %a1 /* CACR */
+ move.l #(ICACHE_STATUS), %a2 /* icache */
+ move.l #(DCACHE_STATUS), %a3 /* dcache */
+ move.l %d0, (%a1)
+ move.l %d0, (%a2)
+ move.l %d0, (%a3)
+
+ /* invalidate and disable cache */
+ move.l #0x01004100, %d0 /* Invalidate cache cmd */
+ movec %d0, %CACR /* Invalidate cache */
+ move.l #0, %d0
+ movec %d0, %ACR0
+ movec %d0, %ACR1
+ movec %d0, %ACR2
+ movec %d0, %ACR3
+
+ /* set stackpointer to end of internal ram to get some stackspace for
+ the first c-code */
+ move.l #(CFG_INIT_RAM_ADDR + CFG_INIT_SP_OFFSET), %sp
+ clr.l %sp@-
+
+ move.l #__got_start, %a5 /* put relocation table address to a5 */
+
+ bsr cpu_init_f /* run low-level CPU init code (from flash) */
+ bsr board_init_f /* run low-level board init code (from flash) */
+
+ /* board_init_f() does not return */
+
+/*------------------------------------------------------------------------------*/
+
+/*
+ * void relocate_code (addr_sp, gd, addr_moni)
+ *
+ * This "function" does not return, instead it continues in RAM
+ * after relocating the monitor code.
+ *
+ * r3 = dest
+ * r4 = src
+ * r5 = length in bytes
+ * r6 = cachelinesize
+ */
+ .globl relocate_code
+relocate_code:
+ link.w %a6,#0
+ move.l 8(%a6), %sp /* set new stack pointer */
+
+ move.l 12(%a6), %d0 /* Save copy of Global Data pointer */
+ move.l 16(%a6), %a0 /* Save copy of Destination Address */
+
+ move.l #CFG_MONITOR_BASE, %a1
+ move.l #__init_end, %a2
+ move.l %a0, %a3
+
+ /* copy the code to RAM */
+1:
+ move.l (%a1)+, (%a3)+
+ cmp.l %a1,%a2
+ bgt.s 1b
+
+/*
+ * We are done. Do not return, instead branch to second part of board
+ * initialization, now running from RAM.
+ */
+ move.l %a0, %a1
+ add.l #(in_ram - CFG_MONITOR_BASE), %a1
+ jmp (%a1)
+
+in_ram:
+
+clear_bss:
+ /*
+ * Now clear BSS segment
+ */
+ move.l %a0, %a1
+ add.l #(_sbss - CFG_MONITOR_BASE),%a1
+ move.l %a0, %d1
+ add.l #(_ebss - CFG_MONITOR_BASE),%d1
+6:
+ clr.l (%a1)+
+ cmp.l %a1,%d1
+ bgt.s 6b
+
+ /*
+ * fix got table in RAM
+ */
+ move.l %a0, %a1
+ add.l #(__got_start - CFG_MONITOR_BASE),%a1
+ move.l %a1,%a5 /* * fix got pointer register a5 */
+
+ move.l %a0, %a2
+ add.l #(__got_end - CFG_MONITOR_BASE),%a2
+
+7:
+ move.l (%a1),%d1
+ sub.l #_start,%d1
+ add.l %a0,%d1
+ move.l %d1,(%a1)+
+ cmp.l %a2, %a1
+ bne 7b
+
+ /* calculate relative jump to board_init_r in ram */
+ move.l %a0, %a1
+ add.l #(board_init_r - CFG_MONITOR_BASE), %a1
+
+ /* set parameters for board_init_r */
+ move.l %a0,-(%sp) /* dest_addr */
+ move.l %d0,-(%sp) /* gd */
+ jsr (%a1)
+
+/*------------------------------------------------------------------------------*/
+/* exception code */
+ .globl _fault
+_fault:
+ jmp _fault
+ .globl _exc_handler
+
+_exc_handler:
+ SAVE_ALL
+ movel %sp,%sp@-
+ bsr exc_handler
+ addql #4,%sp
+ RESTORE_ALL
+
+ .globl _int_handler
+_int_handler:
+ SAVE_ALL
+ movel %sp,%sp@-
+ bsr int_handler
+ addql #4,%sp
+ RESTORE_ALL
+
+/*------------------------------------------------------------------------------*/
+/* cache functions */
+ .globl icache_enable
+icache_enable:
+ move.l #(CACR_STATUS), %a1 /* read CACR Status */
+ move.l (%a1), %d1
+
+ move.l #0x00040100, %d0 /* Invalidate icache */
+ or.l %d1, %d0
+ movec %d0, %CACR
+
+ move.l #(CFG_SDRAM_BASE + 0xc000), %d0 /* Setup icache */
+ movec %d0, %ACR2
+
+ or.l #0x00088400, %d1 /* Enable bcache and icache */
+ movec %d1, %CACR
+
+ move.l #(ICACHE_STATUS), %a1
+ moveq #1, %d0
+ move.l %d0, (%a1)
+ rts
+
+ .globl icache_disable
+icache_disable:
+ move.l #(CACR_STATUS), %a1 /* read CACR Status */
+ move.l (%a1), %d0
+
+ and.l #0xFFF77BFF, %d0
+ or.l #0x00040100, %d0 /* Setup cache mask */
+ movec %d0, %CACR /* Invalidate icache */
+ clr.l %d0
+ movec %d0, %ACR2
+ movec %d0, %ACR3
+
+ move.l #(ICACHE_STATUS), %a1
+ moveq #0, %d0
+ move.l %d0, (%a1)
+ rts
+
+ .globl icache_status
+icache_status:
+ move.l #(ICACHE_STATUS), %a1
+ move.l (%a1), %d0
+ rts
+
+ .globl icache_invalid
+icache_invalid:
+ move.l #(CACR_STATUS), %a1 /* read CACR Status */
+ move.l (%a1), %d0
+
+ or.l #0x00040100, %d0 /* Invalidate icache */
+ movec %d0, %CACR /* Enable and invalidate cache */
+ rts
+
+ .globl dcache_enable
+dcache_enable:
+ move.l #(CACR_STATUS), %a1 /* read CACR Status */
+ move.l (%a1), %d1
+
+ move.l #0x01000000, %d0
+ or.l %d1, %d0
+ movec %d0, %CACR /* Invalidate dcache */
+
+ move.l #(CFG_SDRAM_BASE + 0xc000), %d0
+ movec %d0, %ACR0
+ move.l #0, %d0
+ movec %d0, %ACR1
+
+ or.l #0x80000000, %d1 /* Enable bcache and icache */
+ movec %d1, %CACR
+
+ move.l #(DCACHE_STATUS), %a1
+ moveq #1, %d0
+ move.l %d0, (%a1)
+ rts
+
+ .globl dcache_disable
+dcache_disable:
+ move.l #(CACR_STATUS), %a1 /* read CACR Status */
+ move.l (%a1), %d0
+
+ and.l #0x7FFFFFFF, %d0
+ or.l #0x01000000, %d0 /* Setup cache mask */
+ movec %d0, %CACR /* Disable dcache */
+ clr.l %d0
+ movec %d0, %ACR0
+ movec %d0, %ACR1
+
+ move.l #(DCACHE_STATUS), %a1
+ moveq #0, %d0
+ move.l %d0, (%a1)
+ rts
+
+ .globl dcache_invalid
+dcache_invalid:
+ move.l #(CACR_STATUS), %a1 /* read CACR Status */
+ move.l (%a1), %d0
+
+ or.l #0x01000000, %d0 /* Setup cache mask */
+ movec %d0, %CACR /* Enable and invalidate cache */
+ rts
+
+ .globl dcache_status
+dcache_status:
+ move.l #(DCACHE_STATUS), %a1
+ move.l (%a1), %d0
+ rts
+
+/*------------------------------------------------------------------------------*/
+
+ .globl version_string
+version_string:
+ .ascii U_BOOT_VERSION
+ .ascii " (", __DATE__, " - ", __TIME__, ")"
+ .ascii CONFIG_IDENT_STRING, "\0"