diff options
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/nv.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/nv.c | 24 |
1 files changed, 22 insertions, 2 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/nv.c b/drivers/gpu/drm/amd/amdgpu/nv.c index af68f9815f28..0ba66bef5746 100644 --- a/drivers/gpu/drm/amd/amdgpu/nv.c +++ b/drivers/gpu/drm/amd/amdgpu/nv.c @@ -40,6 +40,7 @@ #include "gc/gc_10_1_0_sh_mask.h" #include "hdp/hdp_5_0_0_offset.h" #include "hdp/hdp_5_0_0_sh_mask.h" +#include "smuio/smuio_11_0_0_offset.h" #include "soc15.h" #include "soc15_common.h" @@ -156,8 +157,27 @@ static bool nv_read_disabled_bios(struct amdgpu_device *adev) static bool nv_read_bios_from_rom(struct amdgpu_device *adev, u8 *bios, u32 length_bytes) { - /* TODO: will implement it when SMU header is available */ - return false; + u32 *dw_ptr; + u32 i, length_dw; + + if (bios == NULL) + return false; + if (length_bytes == 0) + return false; + /* APU vbios image is part of sbios image */ + if (adev->flags & AMD_IS_APU) + return false; + + dw_ptr = (u32 *)bios; + length_dw = ALIGN(length_bytes, 4) / 4; + + /* set rom index to 0 */ + WREG32(SOC15_REG_OFFSET(SMUIO, 0, mmROM_INDEX), 0); + /* read out the rom data */ + for (i = 0; i < length_dw; i++) + dw_ptr[i] = RREG32(SOC15_REG_OFFSET(SMUIO, 0, mmROM_DATA)); + + return true; } static struct soc15_allowed_register_entry nv_allowed_read_registers[] = { |