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/*
* Copyright (c) 2015, NVIDIA CORPORATION. All rights reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
#ifndef __NVKM_SECBOOT_PRIV_H__
#define __NVKM_SECBOOT_PRIV_H__
#include <subdev/secboot.h>
#include <subdev/mmu.h>
struct nvkm_secboot_func {
int (*init)(struct nvkm_secboot *);
int (*fini)(struct nvkm_secboot *, bool suspend);
void *(*dtor)(struct nvkm_secboot *);
int (*reset)(struct nvkm_secboot *, enum nvkm_secboot_falcon);
int (*start)(struct nvkm_secboot *, enum nvkm_secboot_falcon);
/* ID of the falcon that will perform secure boot */
enum nvkm_secboot_falcon boot_falcon;
/* Bit-mask of IDs of managed falcons */
unsigned long managed_falcons;
};
int nvkm_secboot_ctor(const struct nvkm_secboot_func *, struct nvkm_device *,
int index, struct nvkm_secboot *);
int nvkm_secboot_falcon_reset(struct nvkm_secboot *);
int nvkm_secboot_falcon_run(struct nvkm_secboot *);
struct flcn_u64 {
u32 lo;
u32 hi;
};
static inline u64 flcn64_to_u64(const struct flcn_u64 f)
{
return ((u64)f.hi) << 32 | f.lo;
}
/**
* struct gm200_flcn_bl_desc - DMEM bootloader descriptor
* @signature: 16B signature for secure code. 0s if no secure code
* @ctx_dma: DMA context to be used by BL while loading code/data
* @code_dma_base: 256B-aligned Physical FB Address where code is located
* (falcon's $xcbase register)
* @non_sec_code_off: offset from code_dma_base where the non-secure code is
* located. The offset must be multiple of 256 to help perf
* @non_sec_code_size: the size of the nonSecure code part.
* @sec_code_off: offset from code_dma_base where the secure code is
* located. The offset must be multiple of 256 to help perf
* @sec_code_size: offset from code_dma_base where the secure code is
* located. The offset must be multiple of 256 to help perf
* @code_entry_point: code entry point which will be invoked by BL after
* code is loaded.
* @data_dma_base: 256B aligned Physical FB Address where data is located.
* (falcon's $xdbase register)
* @data_size: size of data block. Should be multiple of 256B
*
* Structure used by the bootloader to load the rest of the code. This has
* to be filled by host and copied into DMEM at offset provided in the
* hsflcn_bl_desc.bl_desc_dmem_load_off.
*/
struct gm200_flcn_bl_desc {
u32 reserved[4];
u32 signature[4];
u32 ctx_dma;
struct flcn_u64 code_dma_base;
u32 non_sec_code_off;
u32 non_sec_code_size;
u32 sec_code_off;
u32 sec_code_size;
u32 code_entry_point;
struct flcn_u64 data_dma_base;
u32 data_size;
};
/**
* struct hsflcn_acr_desc - data section of the HS firmware
*
* This header is to be copied at the beginning of DMEM by the HS bootloader.
*
* @signature: signature of ACR ucode
* @wpr_region_id: region ID holding the WPR header and its details
* @wpr_offset: offset from the WPR region holding the wpr header
* @regions: region descriptors
* @nonwpr_ucode_blob_size: size of LS blob
* @nonwpr_ucode_blob_start: FB location of LS blob is
*/
struct hsflcn_acr_desc {
union {
u8 reserved_dmem[0x200];
u32 signatures[4];
} ucode_reserved_space;
u32 wpr_region_id;
u32 wpr_offset;
u32 mmu_mem_range;
#define FLCN_ACR_MAX_REGIONS 2
struct {
u32 no_regions;
struct {
u32 start_addr;
u32 end_addr;
u32 region_id;
u32 read_mask;
u32 write_mask;
u32 client_mask;
} region_props[FLCN_ACR_MAX_REGIONS];
} regions;
u32 ucode_blob_size;
u64 ucode_blob_base __aligned(8);
struct {
u32 vpr_enabled;
u32 vpr_start;
u32 vpr_end;
u32 hdcp_policies;
} vpr_desc;
};
/**
* Contains the whole secure boot state, allowing it to be performed as needed
* @wpr_addr: physical address of the WPR region
* @wpr_size: size in bytes of the WPR region
* @ls_blob: LS blob of all the LS firmwares, signatures, bootloaders
* @ls_blob_size: size of the LS blob
* @ls_blob_nb_regions: number of LS firmwares that will be loaded
* @acr_blob: HS blob
* @acr_blob_vma: mapping of the HS blob into the secure falcon's VM
* @acr_bl_desc: bootloader descriptor of the HS blob
* @hsbl_blob: HS blob bootloader
* @inst: instance block for HS falcon
* @pgd: page directory for the HS falcon
* @vm: address space used by the HS falcon
* @falcon_state: current state of the managed falcons
* @firmware_ok: whether the firmware blobs have been created
*/
struct gm200_secboot {
struct nvkm_secboot base;
const struct gm200_secboot_func *func;
/*
* Address and size of the WPR region. On dGPU this will be the
* address of the LS blob. On Tegra this is a fixed region set by the
* bootloader
*/
u64 wpr_addr;
u32 wpr_size;
/*
* HS FW - lock WPR region (dGPU only) and load LS FWs
* on Tegra the HS FW copies the LS blob into the fixed WPR instead
*/
struct nvkm_gpuobj *acr_load_blob;
struct gm200_flcn_bl_desc acr_load_bl_desc;
/* HS FW - unlock WPR region (dGPU only) */
struct nvkm_gpuobj *acr_unload_blob;
struct gm200_flcn_bl_desc acr_unload_bl_desc;
/* HS bootloader */
void *hsbl_blob;
/* LS FWs, to be loaded by the HS ACR */
struct nvkm_gpuobj *ls_blob;
/* Instance block & address space used for HS FW execution */
struct nvkm_gpuobj *inst;
struct nvkm_gpuobj *pgd;
struct nvkm_vm *vm;
/* To keep track of the state of all managed falcons */
enum {
/* In non-secure state, no firmware loaded, no privileges*/
NON_SECURE = 0,
/* In low-secure mode and ready to be started */
RESET,
/* In low-secure mode and running */
RUNNING,
} falcon_state[NVKM_SECBOOT_FALCON_END];
bool firmware_ok;
};
#define gm200_secboot(sb) container_of(sb, struct gm200_secboot, base)
/**
* Contains functions we wish to abstract between GM200-like implementations
* @bl_desc_size: size of the BL descriptor used by this chip.
* @fixup_bl_desc: hook that generates the proper BL descriptor format from
* the generic GM200 format into a data array of size
* bl_desc_size
* @fixup_hs_desc: hook that twiddles the HS descriptor before it is used
* @prepare_blobs: prepares the various blobs needed for secure booting
*/
struct gm200_secboot_func {
/*
* Size of the bootloader descriptor for this chip. A block of this
* size is allocated before booting a falcon and the fixup_bl_desc
* callback is called on it
*/
u32 bl_desc_size;
void (*fixup_bl_desc)(const struct gm200_flcn_bl_desc *, void *);
/*
* Chip-specific modifications of the HS descriptor can be done here.
* On dGPU this is used to fill the information about the WPR region
* we want the HS FW to set up.
*/
void (*fixup_hs_desc)(struct gm200_secboot *, struct hsflcn_acr_desc *);
int (*prepare_blobs)(struct gm200_secboot *);
};
int gm200_secboot_init(struct nvkm_secboot *);
void *gm200_secboot_dtor(struct nvkm_secboot *);
int gm200_secboot_reset(struct nvkm_secboot *, u32);
int gm200_secboot_start(struct nvkm_secboot *, u32);
int gm20x_secboot_prepare_blobs(struct gm200_secboot *);
#endif
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