be093beb60
OMAP wishes to pass state to the boot loader upon reboot in order to instruct it whether to wait for USB-based reflashing or not. There is already a facility to do this via the reboot() syscall, except we ignore the string passed to machine_restart(). This patch fixes things to pass this string to arch_reset(). This means that we keep the reboot mode limited to telling the kernel _how_ to perform the reboot which should be independent of what we request the boot loader to do. Acked-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
50 lines
1.3 KiB
C
50 lines
1.3 KiB
C
/*
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* arch/arm/mach-ixp2000/include/mach/system.h
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*
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* Copyright (C) 2002 Intel Corp.
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* Copyricht (C) 2003-2005 MontaVista Software, Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <mach/hardware.h>
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#include <asm/mach-types.h>
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static inline void arch_idle(void)
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{
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cpu_do_idle();
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}
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static inline void arch_reset(char mode, const char *cmd)
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{
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local_irq_disable();
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/*
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* Reset flash banking register so that we are pointing at
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* RedBoot bank.
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*/
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if (machine_is_ixdp2401()) {
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ixp2000_reg_write(IXDP2X01_CPLD_FLASH_REG,
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((0 >> IXDP2X01_FLASH_WINDOW_BITS)
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| IXDP2X01_CPLD_FLASH_INTERN));
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ixp2000_reg_wrb(IXDP2X01_CPLD_RESET_REG, 0xffffffff);
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}
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/*
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* On IXDP2801 we need to write this magic sequence to the CPLD
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* to cause a complete reset of the CPU and all external devices
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* and move the flash bank register back to 0.
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*/
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if (machine_is_ixdp2801() || machine_is_ixdp28x5()) {
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unsigned long reset_reg = *IXDP2X01_CPLD_RESET_REG;
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reset_reg = 0x55AA0000 | (reset_reg & 0x0000FFFF);
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ixp2000_reg_write(IXDP2X01_CPLD_RESET_REG, reset_reg);
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ixp2000_reg_wrb(IXDP2X01_CPLD_RESET_REG, 0x80000000);
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}
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ixp2000_reg_wrb(IXP2000_RESET0, RSTALL);
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}
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