diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/mach-tegra/include/nvbootargs.h | 16 | ||||
| -rw-r--r-- | arch/arm/mach-tegra/nvos/nvos.c | 16 |
2 files changed, 25 insertions, 7 deletions
diff --git a/arch/arm/mach-tegra/include/nvbootargs.h b/arch/arm/mach-tegra/include/nvbootargs.h index 908c26f0ea52..2e11843a9a68 100644 --- a/arch/arm/mach-tegra/include/nvbootargs.h +++ b/arch/arm/mach-tegra/include/nvbootargs.h @@ -94,6 +94,7 @@ typedef struct NvBootArgsCarveoutRec */ typedef struct NvBootArgsWarmbootRec { + /* The key used for accessing the preserved memory handle */ NvU32 MemHandleKey; } NvBootArgsWarmboot; @@ -112,7 +113,6 @@ typedef struct NvBootArgsPreservedMemHandleRec NvU32 Size; } NvBootArgsPreservedMemHandle; - /** * Display boot args, indexed by NvBootArgKey_Display. * @@ -162,6 +162,16 @@ typedef struct NvBootArgsFramebufferRec * assumed to begin at Pitch * Height bytes from the * previous surface. */ NvU8 NumSurfaces; + /* Flags for future expandability. + * Current allowable flags are: + * zero - default + * NV_BOOT_ARGS_FB_FLAG_TEARING_EFFECT - use a tearing effect signal in + * combination with a trigger from the display software to generate + * a frame of pixels for the display device. + */ + NvU32 Flags; +#define NVBOOTARG_FB_FLAG_TEARING_EFFECT (0x1) + } NvBootArgsFramebuffer; /** @@ -210,8 +220,8 @@ typedef struct NvBootArgsChipShmooPhysRec NvU32 Size; } NvBootArgsChipShmooPhys; -#define NVBOOTARG_NUM_PRESERVED_HANDLES (NvBootArgKey_PreservedMemHandle_Num - \ - NvBootArgKey_PreservedMemHandle_0) +#define NVBOOTARG_NUM_PRESERVED_HANDLES \ + (NvBootArgKey_PreservedMemHandle_Num - NvBootArgKey_PreservedMemHandle_0) /** * OS-agnostic bootarg structure. diff --git a/arch/arm/mach-tegra/nvos/nvos.c b/arch/arm/mach-tegra/nvos/nvos.c index 9b4329b97dc4..4de8cd4be33f 100644 --- a/arch/arm/mach-tegra/nvos/nvos.c +++ b/arch/arm/mach-tegra/nvos/nvos.c @@ -1445,8 +1445,7 @@ NvError NvOsBootArgGet(NvU32 key, void *arg, NvU32 size) } else { - switch (key) - { + switch (key) { case NvBootArgKey_ChipShmoo: src = &s_BootArgs.ChipShmooArgs; size_src = sizeof(NvBootArgsChipShmoo); @@ -1478,10 +1477,19 @@ NvError NvOsBootArgGet(NvU32 key, void *arg, NvU32 size) } } - if (!arg || !src || (size_src!=size)) + if( !arg || !src ) + { return NvError_BadParameter; + } - NvOsMemcpy(arg, src, size_src); + /* don't copy too much if the size has changed (gotten bigger in new + * binaries. + */ + NvOsMemcpy(arg, src, NV_MIN( size, size_src) ); + if( size > size_src ) + { + NvOsMemset( (NvU8 *)src + size_src, 0, size - size_src ); + } return NvSuccess; } |