diff options
author | Jon Mayo <jmayo@nvidia.com> | 2010-11-10 00:43:19 -0800 |
---|---|---|
committer | Varun Colbert <vcolbert@nvidia.com> | 2010-11-15 20:21:45 -0800 |
commit | f91ff9b31a37b11df8636fa886b01dbdc47587f1 (patch) | |
tree | 6b9a676298e5e9827a17999f835ba3908ed2ac2d /arch/arm/mach-tegra/include/mach/fuse.h | |
parent | b79646f0a0cbfe48558980215794c178d814585e (diff) |
[arm/tegra] cache kfuses on boottegra-10.9.5
Cache the fuse contents early in boot before DMA is active to ensure
exclusive access on that bus. This cache is exposed at
/sys/firmware/fuse/kfuse_raw and it can be read() or mmap()'d.
Bug 741232
Change-Id: I83bc991c89beb837ec22b2e03ceac11ab696cb6f
Reviewed-on: http://git-master/r/10482
Reviewed-by: Jonathan Mayo <jmayo@nvidia.com>
Tested-by: Jonathan Mayo <jmayo@nvidia.com>
Reviewed-by: Aleksandr Frid <afrid@nvidia.com>
Reviewed-by: Yu-Huan Hsu <yhsu@nvidia.com>
Reviewed-by: Varun Colbert <vcolbert@nvidia.com>
Tested-by: Varun Colbert <vcolbert@nvidia.com>
Diffstat (limited to 'arch/arm/mach-tegra/include/mach/fuse.h')
-rw-r--r-- | arch/arm/mach-tegra/include/mach/fuse.h | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/arch/arm/mach-tegra/include/mach/fuse.h b/arch/arm/mach-tegra/include/mach/fuse.h new file mode 100644 index 000000000000..3a4f71e46b94 --- /dev/null +++ b/arch/arm/mach-tegra/include/mach/fuse.h @@ -0,0 +1,25 @@ +/* + * arch/arm/mach-tegra/fuse.h + * + * Copyright (c) 2010, NVIDIA Corporation. + * + * This software is licensed under the terms of the GNU General Public + * License version 2, as published by the Free Software Foundation, and + * may be copied, distributed, and modified under those terms. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + */ + +#ifndef __MACH_TEGRA_FUSE_H +#define __MACH_TEGRA_FUSE_H + +#include <linux/init.h> + +void __init tegra_init_fuse_cache(void); +const u32 *tegra_kfuse_cache_get(size_t *size); + +#endif |