Revision 41ba806f40a9a4c4f4c04a474bf368160f1baa2c authored by Ben Skeggs on 13 January 2021, 07:12:52 UTC, committed by Ben Skeggs on 15 January 2021, 00:25:21 UTC
No VPR scrub. GA102 and GA104 have a new VRAM size detection method. Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
1 parent de4781d
check_signature.c
// SPDX-License-Identifier: GPL-2.0
#include <linux/io.h>
#include <linux/export.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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