forked from Imagelibrary/rtems
62 lines
1.2 KiB
C
62 lines
1.2 KiB
C
/**
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* @file
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*
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* @ingroup lpc32xx_boot
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*
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* @brief Boot support implementation.
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*/
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/*
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* Copyright (c) 2010
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* embedded brains GmbH
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* Obere Lagerstr. 30
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* D-82178 Puchheim
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* Germany
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* <rtems@embedded-brains.de>
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*
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* The license and distribution terms for this file may be
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* found in the file LICENSE in this distribution or at
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* http://www.rtems.org/license/LICENSE.
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*/
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#include <string.h>
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#include <bsp/boot.h>
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void lpc32xx_setup_boot_block(
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lpc32xx_boot_block *boot_block,
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uint8_t icr,
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uint8_t page_count
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)
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{
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memset(boot_block, 0, sizeof(*boot_block));
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++page_count;
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boot_block->field.d0 = icr;
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boot_block->field.d2 = icr;
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boot_block->field.d4 = page_count;
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boot_block->field.d6 = page_count;
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boot_block->field.d8 = page_count;
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boot_block->field.d10 = page_count;
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icr = (uint8_t) ~((unsigned) icr);
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page_count = (uint8_t) ~((unsigned) page_count);
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boot_block->field.d1 = icr;
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boot_block->field.d3 = icr;
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boot_block->field.d5 = page_count;
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boot_block->field.d7 = page_count;
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boot_block->field.d9 = page_count;
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boot_block->field.d11 = page_count;
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boot_block->field.d12 = 0xaa;
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}
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void lpc32xx_set_boot_block_bad(
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lpc32xx_boot_block *boot_block
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)
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{
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boot_block->field.d12 = 0;
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}
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