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https://opencores.org/ocsvn/or1k_soc_on_altera_embedded_dev_kit/or1k_soc_on_altera_embedded_dev_kit/trunk
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[/] [or1k_soc_on_altera_embedded_dev_kit/] [trunk/] [linux-2.6/] [linux-2.6.24/] [lib/] [check_signature.c] - Rev 17
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#include <linux/io.h> #include <linux/module.h> /** * check_signature - find BIOS signatures * @io_addr: mmio address to check * @signature: signature block * @length: length of signature * * Perform a signature comparison with the mmio address io_addr. This * address should have been obtained by ioremap. * Returns 1 on a match. */ int check_signature(const volatile void __iomem *io_addr, const unsigned char *signature, int length) { while (length--) { if (readb(io_addr) != *signature) return 0; io_addr++; signature++; } return 1; } EXPORT_SYMBOL(check_signature);
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