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* Copyright (C) 2003 Josef Baumgartner <josef.baumgartner@telex.de>
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* Based on code from Bernhard Kuhn <bkuhn@metrowerks.com>
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* See file CREDITS for list of people who contributed to this
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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#include <timestamp.h>
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#ifndef CONFIG_IDENT_STRING
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#define CONFIG_IDENT_STRING ""
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move.w #0x2700,%sr; /* disable intrs */ \
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subl #60,%sp; /* space for 15 regs */ \
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moveml %d0-%d7/%a0-%a6,%sp@; \
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moveml %sp@,%d0-%d7/%a0-%a6; \
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addl #60,%sp; /* space for 15 regs */ \
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/* If we come from a pre-loader we don't need an initial exception
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#if !defined(CONFIG_MONITOR_IS_IN_RAM)
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* Vector table. This is used for initial platform startup.
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* These vectors are to catch any un-intended traps.
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.long 0x00000000 /* Flash offset is 0 until we setup CS0 */
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#if defined(CONFIG_M5282) && (TEXT_BASE == CONFIG_SYS_INT_FLASH_BASE)
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.long _start - TEXT_BASE
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.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
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.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
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.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
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.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
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.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
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.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
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.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
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.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
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.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
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.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
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.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
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.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
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.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
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.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
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.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
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.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
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.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
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.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
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.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
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.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
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.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
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.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
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.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
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.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
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.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
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.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
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.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
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.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
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.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
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.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
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.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
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.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
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#if defined(CONFIG_SYS_INT_FLASH_BASE) && \
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(defined(CONFIG_M5282) || defined(CONFIG_M5281))
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#if (TEXT_BASE == CONFIG_SYS_INT_FLASH_BASE)
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.long 0x55AA55AA,0xAA55AA55 /* CFM Backdoorkey */
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.long 0xFFFFFFFF /* all sectors protected */
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.long 0x00000000 /* supervisor/User restriction */
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.long 0x00000000 /* programm/data space restriction */
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.long 0x00000000 /* Flash security */
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#if defined(CONFIG_M5208)
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/* Initialize RAMBAR: locate SRAM and validate it */
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move.l #(CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_INIT_RAM_CTRL), %d0
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#if defined(CONFIG_M5272) || defined(CONFIG_M5249) || defined(CONFIG_M5253)
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move.l #(CONFIG_SYS_MBAR + 1), %d0 /* set MBAR address + valid flag */
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/*** The 5249 has MBAR2 as well ***/
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#ifdef CONFIG_SYS_MBAR2
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move.l #(CONFIG_SYS_MBAR2 + 1), %d0 /* Get MBAR2 address */
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movec %d0, #0xc0e /* Set MBAR2 */
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move.l #(CONFIG_SYS_INIT_RAM_ADDR + 1), %d0
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#endif /* CONFIG_M5272 || CONFIG_M5249 || CONFIG_M5253 */
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#if defined(CONFIG_M5282) || defined(CONFIG_M5271)
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/* Initialize IPSBAR */
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move.l #(CONFIG_SYS_MBAR + 1), %d0 /* set IPSBAR address + valid flag */
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move.l %d0, 0x40000000
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/* Initialize RAMBAR1: locate SRAM and validate it */
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move.l #(CONFIG_SYS_INIT_RAM_ADDR + 0x21), %d0
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#if defined(CONFIG_M5282)
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#if (TEXT_BASE == CONFIG_SYS_INT_FLASH_BASE)
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/* Setup code in SRAM to initialize FLASHBAR, if start from internal Flash */
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move.l #(_flashbar_setup-CONFIG_SYS_INT_FLASH_BASE), %a0
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move.l #(_flashbar_setup_end-CONFIG_SYS_INT_FLASH_BASE), %a1
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move.l #(CONFIG_SYS_INIT_RAM_ADDR), %a2
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move.l (%a0)+, (%a2)+
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jmp CONFIG_SYS_INIT_RAM_ADDR
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/* Initialize FLASHBAR: locate internal Flash and validate it */
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move.l #(CONFIG_SYS_INT_FLASH_BASE + CONFIG_SYS_INT_FLASH_ENABLE), %d0
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jmp _after_flashbar_copy.L /* Force jump to absolute address */
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_after_flashbar_copy:
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/* Setup code to initialize FLASHBAR, if start from external Memory */
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move.l #(CONFIG_SYS_INT_FLASH_BASE + CONFIG_SYS_INT_FLASH_ENABLE), %d0
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#endif /* (TEXT_BASE == CONFIG_SYS_INT_FLASH_BASE) */
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/* if we come from a pre-loader we have no exception table and
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* therefore no VBR to set
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#if !defined(CONFIG_MONITOR_IS_IN_RAM)
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#if defined(CONFIG_M5282) && (TEXT_BASE == CONFIG_SYS_INT_FLASH_BASE)
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move.l #CONFIG_SYS_INT_FLASH_BASE, %d0
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move.l #CONFIG_SYS_FLASH_BASE, %d0
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/* Initialize IPSBAR */
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move.l #(CONFIG_SYS_MBAR + 1), %d0 /* set IPSBAR address + valid flag */
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move.l %d0, 0x40000000
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/* movec %d0, %MBAR */
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/* Initialize RAMBAR: locate SRAM and validate it */
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move.l #(CONFIG_SYS_INIT_RAM_ADDR + 0x21), %d0
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/* set stackpointer to end of internal ram to get some stackspace for the first c-code */
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move.l #(CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_INIT_SP_OFFSET), %sp
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move.l #__got_start, %a5 /* put relocation table address to a5 */
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bsr cpu_init_f /* run low-level CPU init code (from flash) */
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bsr board_init_f /* run low-level board init code (from flash) */
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/* board_init_f() does not return */
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/*------------------------------------------------------------------------------*/
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* void relocate_code (addr_sp, gd, addr_moni)
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* This "function" does not return, instead it continues in RAM
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* after relocating the monitor code.
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* r5 = length in bytes
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move.l 8(%a6), %sp /* set new stack pointer */
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move.l 12(%a6), %d0 /* Save copy of Global Data pointer */
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move.l 16(%a6), %a0 /* Save copy of Destination Address */
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move.l #CONFIG_SYS_MONITOR_BASE, %a1
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move.l #__init_end, %a2
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/* copy the code to RAM */
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move.l (%a1)+, (%a3)+
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* We are done. Do not return, instead branch to second part of board
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* initialization, now running from RAM.
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add.l #(in_ram - CONFIG_SYS_MONITOR_BASE), %a1
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* Now clear BSS segment
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add.l #(_sbss - CONFIG_SYS_MONITOR_BASE),%a1
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add.l #(_ebss - CONFIG_SYS_MONITOR_BASE),%d1
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* fix got table in RAM
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add.l #(__got_start - CONFIG_SYS_MONITOR_BASE),%a1
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move.l %a1,%a5 /* * fix got pointer register a5 */
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add.l #(__got_end - CONFIG_SYS_MONITOR_BASE),%a2
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#if defined(CONFIG_M5281) || defined(CONFIG_M5282)
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/* patch the 3 accesspoints to 3 ichache_state */
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/* quick and dirty */
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add.l #(icache_state - CONFIG_SYS_MONITOR_BASE),%d1
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add.l #(icache_state_access_1+2 - CONFIG_SYS_MONITOR_BASE),%a1
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add.l #(icache_state_access_2+2 - CONFIG_SYS_MONITOR_BASE),%a1
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add.l #(icache_state_access_3+2 - CONFIG_SYS_MONITOR_BASE),%a1
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/* calculate relative jump to board_init_r in ram */
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add.l #(board_init_r - CONFIG_SYS_MONITOR_BASE), %a1
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/* set parameters for board_init_r */
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move.l %a0,-(%sp) /* dest_addr */
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move.l %d0,-(%sp) /* gd */
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#if defined(DEBUG) && (TEXT_BASE != CONFIG_SYS_INT_FLASH_BASE) && \
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defined(CONFIG_SYS_HALT_BEFOR_RAM_JUMP)
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/*------------------------------------------------------------------------------*/
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/*------------------------------------------------------------------------------*/
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/* cache functions */
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move.l #0x01000000, %d0 /* Invalidate cache cmd */
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movec %d0, %CACR /* Invalidate cache */
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move.l #(CONFIG_SYS_SDRAM_BASE + 0xC000), %d0 /* Setup cache mask */
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movec %d0, %ACR0 /* Enable cache */
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move.l #0x80000200, %d0 /* Setup cache mask */
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movec %d0, %CACR /* Enable cache */
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move.l #(CONFIG_SYS_INIT_RAM_ADDR+CONFIG_SYS_INIT_RAM_END-8), %a1
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move.l #0x01000000, %d0 /* Invalidate cache cmd */
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movec %d0, %CACR /* Invalidate cache */
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move.l #(CONFIG_SYS_SDRAM_BASE + 0xc000), %d0 /* Setup cache mask */
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movec %d0, %ACR0 /* Enable cache */
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move.l #0x80000200, %d0 /* Setup cache mask */
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movec %d0, %CACR /* Enable cache */
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move.l #(CONFIG_SYS_INIT_RAM_ADDR+CONFIG_SYS_INIT_RAM_END-8), %a1
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move.l #0x01000000, %d0 /* Invalidate cache cmd */
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movec %d0, %CACR /* Invalidate cache */
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move.l #0x0000c000, %d0 /* Setup cache mask */
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movec %d0, %ACR0 /* Enable cache */
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move.l #0xff00c000, %d0 /* Setup cache mask */
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movec %d0, %ACR1 /* Enable cache */
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move.l #0x80000100, %d0 /* Setup cache mask */
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movec %d0, %CACR /* Enable cache */
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move.l %d0, icache_state
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#if defined(CONFIG_M5275)
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* Instruction cache only
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move.l #0x01400000, %d0 /* Invalidate cache cmd */
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movec %d0, %CACR /* Invalidate cache */
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move.l #0x0000c000, %d0 /* Setup SDRAM caching */
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movec %d0, %ACR0 /* Enable cache */
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move.l #0x00000000, %d0 /* No other caching */
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movec %d0, %ACR1 /* Enable cache */
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move.l #0x80400100, %d0 /* Setup cache mask */
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movec %d0, %CACR /* Enable cache */
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move.l %d0, icache_state
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move.l #0x01000000, %d0 /* Invalidate cache cmd */
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movec %d0, %CACR /* Invalidate cache */
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move.l #0x0000c000, %d0 /* Setup cache mask */
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movec %d0, %ACR0 /* Enable cache */
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move.l #0xff00c000, %d0 /* Setup cache mask */
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movec %d0, %ACR1 /* Enable cache */
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move.l #0x80400100, %d0 /* Setup cache mask, data cache disabel*/
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movec %d0, %CACR /* Enable cache */
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icache_state_access_1:
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move.l %d0, icache_state
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#if defined(CONFIG_M5249) || defined(CONFIG_M5253)
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* Note: The 5249 Documentation doesn't give a bit position for CINV!
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* From the 5272 and the 5307 documentation, I have deduced that it is
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* probably CACR[24]. Should someone say something to Motorola?
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move.l #0x01000000, %d0 /* Invalidate whole cache */
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move.l #0xff00c000, %d0 /* Set FLASH cachable: always match (SM=0b10) */
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move.l #0x0000c000, %d0 /* Set SDRAM cachable: always match (SM=0b10) */
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move.l #0x90000200, %d0 /* Set cache enable cmd */
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move.l %d0, icache_state
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.globl icache_disable
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move.l #0x00000100, %d0 /* Setup cache mask */
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movec %d0, %CACR /* Enable cache */
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clr.l %d0 /* Setup cache mask */
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movec %d0, %ACR0 /* Enable cache */
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movec %d0, %ACR1 /* Enable cache */
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icache_state_access_2:
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move.l %d0, icache_state
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icache_state_access_3:
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move.l #(icache_state), %a0
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.long 0 /* cache is diabled on inirialization */
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.globl dcache_disable
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/*------------------------------------------------------------------------------*/
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.globl version_string
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.ascii U_BOOT_VERSION
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.ascii " (", U_BOOT_DATE, " - ", U_BOOT_TIME, ")"
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.ascii CONFIG_IDENT_STRING, "\0"